JP7218868B2 - Heat storage heat dissipation system - Google Patents

Description

The present invention relates to a heat storage and heat dissipation system.

A heat storage/radiation system is used that absorbs heat from a heating element, stores the heat, and releases the stored heat when necessary. For example, Japanese Patent Application Laid-Open No. 2017-218971 (Patent Document 1) discloses a heat storage and heat dissipation system including a heat storage body containing titanium oxide having a predetermined crystal structure (new type titanium oxide). The new titanium oxide contained in this heat storage material undergoes a phase transition from the β phase to the λ phase when heated to more than about 187°C, storing external heat at that time, and when a pressure of about 60 MPa or more is applied, the λ phase changes to the β phase. and releases heat to the outside at that time.

JP 2017-218971 A

In the heat storage and heat dissipation system of Patent Document 1, it is necessary to apply a large pressure as a trigger for heat dissipation as described above, so it is necessary to increase the strength of the peripheral members and improve the durability. Moreover, a lot of energy is consumed in order to generate a large pressure.

It is desired to realize a heat storage and heat release system that can perform heat storage and heat release with high energy efficiency with a relatively simple configuration.

The heat storage and heat dissipation system according to the present disclosure is
A phase transition material having bistability, when the crystal structure is in the first phase, when heated to the first temperature or higher, it absorbs heat and undergoes a phase transition to the second phase, and when the crystal structure is in the second phase a heat storage body comprising a phase transition material that phase transitions to the first phase and releases heat when the temperature reaches a second temperature lower than the first temperature;
a heat insulating case having an opening and housing the heat storage element therein;
an opening/closing device provided in the opening and capable of opening and closing the opening;
a first heat transfer section that connects the heat generating element and the heat storage element in a heat conductive manner and is switchable between a heat transfer state and a non-heat transfer state;
a second heat transfer section that connects the object to be heated and the heat storage body so as to allow heat conduction and is switchable between a heat transfer state and a non-heat transfer state;
When the temperature of the heating element is equal to or higher than the first temperature, the opening is closed and the first heat transfer section is brought into the heat transfer state, and the outside air temperature around the heat insulating case is equal to or lower than the second temperature. a control unit that brings the opening into an open state and places the second heat transfer unit into a heat transfer state when a specified start condition regarding the object to be heated is satisfied;
Prepare.

According to this configuration, the phase change material provided in the heat storage body switches between a state of absorbing heat and a state of releasing heat based on the temperature, so there is no need to apply a large pressure, for example. Therefore, there is no need to increase the strength or durability of the peripheral member, and consumption of a large amount of energy for the trigger can be suppressed. Therefore, it is possible to store and release heat with high energy efficiency with a relatively simple configuration. Further, in this configuration, when the temperature of the heating element is equal to or higher than the first temperature, the opening is closed and the first heat transfer section is in the heat transfer state, so that the heat of the heating element is transferred to the heat storage element. The phase change material can phase change to a second phase to store heat. On the other hand, when the outside air temperature is equal to or lower than the second temperature and the starting conditions are satisfied, the opening is opened and the second heat transfer section is set to the heat transfer state, so that the heat flows into the heat insulation case from the opening. The incoming outside air cools the heat reservoir to a second temperature or lower, causing the phase change material to undergo a phase transition to the first phase, thereby allowing heat to be dissipated. Then, the heat generated by the heat dissipation can be transferred to the object to be heated, thereby heating the object to be heated. In this manner, with a relatively simple configuration, heat can be absorbed and stored from the heating element with high energy efficiency, and the stored heat can be radiated as needed to heat the object to be heated.

Further features and advantages of the technology according to the present disclosure will become clearer from the following description of exemplary and non-limiting embodiments described with reference to the drawings.

Crystal structure of phase change material in heat storage Graph schematically showing the relationship between magnetic susceptibility and temperature Graph schematically showing the relationship between the amount of heat obtained by a differential scanning calorimeter and the temperature Schematic diagram showing one aspect of heat storage and heat dissipation system Schematic diagram showing one aspect of heat storage and heat dissipation system Schematic diagram showing one aspect of heat storage and heat dissipation system Schematic diagram of another heat storage and heat dissipation system Schematic diagram of another heat storage and heat dissipation system

An embodiment of a heat storage and heat dissipation system will be described with reference to the drawings. In the present embodiment, a heat storage and heat release system 1 that is mounted on and used in an electric vehicle (an example of a mobile object) will be described as an example. Electric vehicles have fewer heat sources than gasoline vehicles, and tend to lack heat especially when the main power of the vehicle is turned on. The heat storage and heat dissipation system 1 of the present embodiment is used to store the heat generated during the previous run and dissipate the heat during the next run, thereby compensating for the heat that tends to be insufficient when the main power is turned on. be done.

The heat storage/dissipation system 1 of the present embodiment is configured around a heat storage body 10 (see FIG. 4 etc.) including a phase change material 12 having bistability. FIG. 1 shows the crystal structure of the phase change material 12 used in this embodiment. This phase transition material 12 is a rubidium-manganese-iron complex (hereinafter sometimes referred to as “RbMnFe complex”), and has a network structure in which iron and manganese are three-dimensionally crosslinked by cyano groups. It has a crystal structure in which rubidium ions are staggered in the vacancies of its framework. The RbMnFe complex is a charge transfer phase transition complex that exhibits bistability between two states, a manganese(II)-iron(III) high temperature phase and a manganese(III)-iron(II) low temperature phase. . Further, as can be seen from the graph of FIG. 2 showing the relationship between magnetic susceptibility and temperature, the RbMnFe complex has temperature hysteresis.

In the RbMnFe complex, the ratio of rubidium to manganese can be changed, for example, reducing the amount of rubidium relative to manganese can lead to the lack of some cyanoferron to maintain electroneutrality and coordination of water molecules. be in a state to That is, the RbMnFe complex is
RbXMn1 _{-X [} Fe(CN) ₆ ] _.zH2O
can be represented by the structural formula By continuously changing the amount of rubidium, the two phase transition temperatures (that is, the first temperature T1 and the second temperature T2) and the hysteresis width (the temperature difference between the first temperature T1 and the second temperature T2) It can be changed continuously.

FIG. 3 shows the relationship between the amount of heat obtained by the differential scanning calorimeter and the temperature. As can be seen from this figure, when the RbMnFe complex (phase transition material 12) is heated to the first temperature T1 or higher when the crystal structure is in the low temperature phase, it absorbs heat and phase transitions to the high temperature phase, and the crystal structure changes to the high temperature phase. When the temperature becomes equal to or lower than the second temperature T2, which is lower than the first temperature T1, the phase transitions to the low temperature phase and heat is released. After the phase transition from the low temperature phase to the high temperature phase, the RbMnFe complex (phase transition material 12) stores the heat absorbed during the phase transition to the high temperature phase until the phase transition to the low temperature phase again. In this embodiment, the low temperature phase corresponds to the "first phase" and the high temperature phase corresponds to the "second phase".

As shown in FIGS. 4 to 6, the heat storage and heat dissipation system 1 of the present embodiment includes a heat storage body 10 including the RbMnFe complex (phase transition material 12) described above, a heat insulating case 20, an opening and closing device 30, and a blower 40. , a shared heat transfer section 50 , a switching mechanism 60 , and a control section 70 . In addition, the heat storage/dissipation system 1 is installed side by side with the heating element/heating target D in a state in which heat can be transferred between the heating element/heating target D and the heating element/heating target D. As shown in FIG. Note that the heating element/heating object D is both the heating element H and the heating object B. As shown in FIG. In this embodiment, the heating element and heating target D is a battery (high-voltage battery) as a power supply source for a rotating electric machine that functions as a driving force source for a vehicle.

The heat insulating case 20 is a case that accommodates the heat storage element 10 inside, and has heat insulating properties. The heat insulating case 20 has a heat insulating case body 21 . The case main body 21 itself may be made of a highly heat insulating material, or may be made by separately providing a heat insulating material. Alternatively, the case body 21 may be configured by providing a vacuum layer inside its outer wall. An accommodation space 22 is formed inside the heat insulating case 20 (case body 21 ), and the heat storage element 10 is arranged in this accommodation space 22 .

An opening 23 and a plurality of insertion holes 24 are formed in the heat insulating case 20 (case main body 21). In this embodiment, the heat insulating case 20 is formed in a rectangular parallelepiped shape, and is arranged so that one surface thereof is in contact with the heat-generating body and heating target body D. As shown in FIG. The insertion hole 24 is formed in a state of penetrating the wall portion of the outer wall portion of the case main body 21 that is in contact with the heating element and heating target D. As shown in FIG. The opening 23 is formed in a state of penetrating through one of the wall portions where the insertion hole 24 is not provided.

An opening/closing device 30 and a blower device 40 are provided in the opening 23 . The opening/closing device 30 is provided so as to open and close the opening 23 of the heat insulating case 20 . That is, the opening/closing device 30 can switch the state of the opening 23 between an open state and a closed state. As shown in FIG. 4 and the like, the opening/closing device 30 of the present embodiment is of a hinge type that opens and closes the opening 23 by swinging the opening/closing door 32 about the rotation shaft 31 . However, the opening/closing device 30 is not limited to such a configuration, and may be of other types such as a louver type, a shutter type, and a double door type.

The air blower 40 is a device for introducing outside air into the heat insulating case 20 (case main body 21 ) through the open opening 23 when the opening 23 is open. The blower device 40 has a fan 41 . The fan 41 generates an air current from the outside to the inside of the case body 21 when it is rotationally driven.

In this embodiment, the shared heat transfer section 50 is arranged in the insertion hole 24 so as to pass through the case body 21 . The shared heat transfer section 50 is a member formed, for example, in a columnar shape using a material with high heat transfer properties. The shared heat transfer section 50 is provided in the same number as the insertion holes 24 , and one shared heat transfer section 50 is arranged in each insertion hole 24 . The shared heat transfer section 50 connects the heating element/heating object D and the heat storage element 10 so as to allow heat conduction, and is switchable between a heat transfer state and a non-heat transfer state. In this embodiment, the common heat transfer section 50 is configured to share (share) the "first heat transfer section" and the "second heat transfer section".

The switching mechanism 60 switches between a heat transfer state and a non-heat transfer state of the shared heat transfer section 50 between the heat-generating body/heating target body D and the heat storage body 10 . The switching mechanism 60 of this embodiment is composed of a slide mechanism 61 that reciprocates the common heat transfer section 50 along its longitudinal direction. The slide mechanism 61 is configured to collectively reciprocate the plurality of shared heat transfer sections 50 . When the slide mechanism 61 moves the shared heat transfer section 50 to the heat storage element 10 side in the movable range of the shared heat transfer section 50 , the shared heat transfer section 50 moves toward both the heating element/heating object D and the heat storage element 10 . It comes into contact (see FIGS. 4 and 6). As a result, heat is transferred between the heating element/heating object D and the heat storage element 10 . On the other hand, when the slide mechanism 61 moves the shared heat transfer section 50 toward the heating element/heating target D side, the shared heat transfer section 50 contacts only the heating element/heating target D and does not contact the heat storage element 10 . becomes (see FIG. 5). As a result, heat is not transferred between the heating element/heating object D and the heat storage element 10 .

The control unit 70 functions as a core that controls the operation of each unit of the heat storage and heat dissipation system 1 . In addition, the control unit 70 is configured to be able to acquire information on detection results of various sensors (the first sensor 81 and the second sensor 82 in the present embodiment) provided in the heat storage and heat dissipation system 1 .

The first sensor 81 is a sensor for detecting the temperature of the heat generating body, and detects the temperature of the heat generating body/heating object D in this embodiment. A second sensor 82 detects the outside air temperature around the heat insulating case 20 . The heat storage/dissipation system 1 may be provided with, for example, a sensor for detecting the temperature of the heat storage body 10 in addition to these.

When the temperature of the heating element/heating target D is equal to or higher than the first temperature T1, the control section 70 closes the opening 23 and brings the common heat transfer section 50 into the heat transfer state (see FIG. 6). . The control unit 70 brings the common heat transfer unit 50 into the heat transfer state by driving the slide mechanism 61 to bring the common heat transfer unit 50 into contact with both the heating element/heat target object D and the heat storage element 10 . . As a result, heat is transferred from the heat-generating body/heating target body D at the first temperature T<b>1 or higher to the heat storage body 10 via the common heat transfer section 50 . At this time, since the opening 23 is in a closed state, the heat transmitted from the heating element/heating object D is difficult to escape from the heat insulating case 20 through the opening 23 . When the heat storage body 10 (phase change material 12) also reaches the first temperature T1 or higher, the crystal structure of the phase change material 12 changes from the low temperature phase to the high temperature phase. The heat storage body 10 absorbs the heat.

For example, when the temperature of the battery, which is the heating element and object to be heated D, rises to the first temperature T1 or higher while the electric vehicle is running, the heat storage element 10 absorbs the heat of the battery as described above. be able to. Since the heat accumulator 10 absorbs the heat of the battery, the temperature rise of the battery is suppressed, so that the battery is less likely to overheat and its performance can be favorably maintained. From this point of view, it is preferable that the first temperature T1 is set at or below a value near the upper limit of a temperature range suitable for exhibiting the performance of the battery, which is the heating element and heating target D. For example, the upper limit of the temperature range is around 40°C, and the first temperature T1 is set to a value within the range of 25°C to 35°C.

When the heat storage element 10 has sufficiently absorbed heat, or when the temperature of the heat storage element 10 becomes lower than the first temperature T1, the control unit 70 keeps the opening 23 closed and causes the shared heat transfer unit 50 to move to the non-heat transfer state. state (see FIG. 5). The control unit 70 drives the slide mechanism 61 to separate the common heat transfer section 50 from the heat storage body 10, thereby bringing the common heat transfer section 50 into the non-heat transfer state. As a result, the heat storage element 10 storing a predetermined amount of heat is held inside the heat insulation case 20 in a state of being thermally isolated from others.

When the outside air temperature around the heat insulation case 20 is equal to or lower than the second temperature T2 and the specified start condition for the object to be heated B is satisfied, the control unit 70 opens the opening 23 and opens the second transmission. The heat section 52 is placed in a heat transfer state (see FIG. 4). Here, as described above, the battery, which is the heating element and the object to be heated D, has a temperature range suitable for exhibiting its performance. Assuming that the lower limit of this temperature range is a third temperature T3, one of the starting conditions is that the temperature of the heating element/heating target D is equal to or lower than the third temperature T3. The third temperature T3 is set to 10° C. to 20° C., for example. The second temperature T2 is preferably set lower than the third temperature T3, and is set to -10°C to 10°C, for example. In addition, in the present embodiment, the fact that there is an instruction to start using the battery, which is the heating element and heating target D, is also one of the start conditions. A command to start using the battery is output, for example, when the main power source of the vehicle is switched from off to on.

For example, in a cold region, if the outside temperature is extremely low (for example, if the outside temperature is below freezing), the temperature of the battery, which is the heating element and heating target D, drops significantly below the third temperature T3 while the vehicle is stopped. may be lost. If the main power source of the vehicle is turned on in this state and the vehicle is driven as it is, the temperature of the battery will deviate from the appropriate temperature range to the low temperature side, resulting in poor electricity consumption (shorter cruising range).

In this regard, in the present embodiment, the control unit 70 controls that the outside air temperature around the heat insulating case 20 is equal to or lower than the second temperature T2, and the temperature of the heating element/heating target D is equal to or lower than the third temperature T3, In addition, when there is a command to start using the battery, which is the heating element and object to be heated D, the opening 23 is opened and the shared heat transfer section 50 is brought into the heat transfer state. Further, the control unit 70 rotates the blower device 40 . As a result, cold air having a temperature equal to or lower than the second temperature T2 is introduced into the heat insulating case 20 through the opening 23 . Then, when the heat storage body 10 (phase change material 12) also becomes lower than the second temperature T2 due to the cold air that has flowed in, the crystal structure of the phase change material 12 changes from the high temperature phase to the low temperature phase, and at that time, the heat that has been stored up to that time to dissipate heat. The heat is transmitted to the heating element/heating target D through the shared heat transfer section 50, and the heating element/heating target D is heated. As a result, for example, when the vehicle is started at extremely low temperatures, the battery, which is the heating element and heating target D, can be quickly warmed, and the power consumption can be improved (the cruising distance can be increased).

[Other embodiments]
(1) In the above embodiment, as the switching mechanism 60 for switching between the heat transfer state and the non-heat transfer state of the common heat transfer section 50 between the heating element/heating object D and the heat storage element 10, the slide The configuration including the mechanism 61 has been described as an example. However, without being limited to such a configuration, an elevating mechanism 62 may be provided as the switching mechanism 60, as shown in FIG. The elevating mechanism 62 elevates the heat storage element 10 along the longitudinal direction of the shared heat transfer section 50 . Then, in a state in which the heat storage element 10 and the shared heat transfer section 50 are in contact with each other, the heat generating element/heating object D and the heat storage element 10 are in a heat transfer state, and the heat storage element 10 and the shared heat transfer section 50 are separated from each other. Then, the heating element/heating object D and the heat storage element 10 are in a non-heat transfer state. In this case, the common heat transfer section 50 is fixed to the heat insulation case 20 in a state of penetrating the heat insulation case 20 .

(2) In the above embodiment, since the shared heat transfer section 50 between the heating element/heating target D and the heat storage body 10 switches between the heat transfer state and the non-heat transfer state, the shared heat transfer section 50 and has been described as an example in which the switching mechanism 60 is separately provided. However, without being limited to such a configuration, the common heat transfer section 50 (the first heat transfer section, the second heat transfer section) itself does not include the switching mechanism 60, and a mechanism for switching the heat transfer property is provided. It's okay to have it. Such a mechanism can be realized, for example, by switching the direction of heat conduction using a phonon material.

(3) In the above embodiment, the configuration in which the blower device 40 is provided in the opening 23 of the heat insulating case 20 has been described as an example. However, without being limited to such a configuration, for example, the blower device 40 may be provided at a position adjacent to the opening 23 of the heat insulating case 20 . Alternatively, the air blower 40 may not be provided.

(4) In the above embodiment, the heating element/heating target D is both the heating element H and the heating target B, and accordingly, the "first heat transfer section" and the "second heat transfer section" are The configuration in which the common heat transfer section 50 is used in common (shared use) has been described as an example. However, without being limited to such a configuration, for example, as shown in FIG. may be provided independently of each other. In this case, the first heat transfer section 51 connects the heating element H and the heat storage element 10 so as to allow heat conduction, and is provided to be switchable between a heat transfer state and a non-heat transfer state, and the second heat transfer section 52 is , the object to be heated B and the heat accumulator 10 are connected in a heat-conducting manner, and are switchable between a heat transfer state and a non-heat transfer state. In addition to the first sensor 81 that detects the temperature of the heating element H, a third sensor 83 that detects the temperature of the object to be heated B is provided. In such a configuration, it is preferable that the control section 70 brings the first heat transfer section 51 into the non-heat transfer state when bringing the second heat transfer section 52 into the heat transfer state. Moreover, it is preferable that the control section 70 brings the second heat transfer section 52 into the non-heat transfer state when the first heat transfer section 51 is brought into the heat transfer state. As an example of the case where the heating element H and the object to be heated B are different, the case where the heating element H is a rotating electrical machine and the object to be heated B is a battery (high voltage battery) is exemplified.

(5) In the above embodiment, the heat storage and heat dissipation system 1 used in an electric vehicle has been described as an example. However, without being limited to such a configuration, the heat storage/radiation system 1 may be used in, for example, a gasoline automobile. In such a case, for example, the heat of the engine may be absorbed and stored, and the stored heat may be used for warming up at the next startup. Alternatively, the heat storage and heat dissipation system 1 may be used, for example, in an air conditioner installed in a house, a vehicle, or the like.

(6) The configurations disclosed in each of the above-described embodiments (including the above-described embodiments and other embodiments; the same applies hereinafter) are applied in combination with the configurations disclosed in other embodiments unless there is a contradiction. It is also possible to Regarding other configurations, the embodiments disclosed in this specification are examples in all respects, and can be modified as appropriate without departing from the scope of the present disclosure.

[Outline of embodiment]
In summary, the heat storage and heat dissipation system according to the present disclosure preferably has the following configurations.

A heat storage and heat dissipation system (1),
A phase change material (12) having bistability, wherein when the crystal structure is in the first phase and heated to a first temperature (T1) or higher, the material absorbs heat and undergoes a phase transition to the second phase, and the crystal structure is A heat storage body (10) comprising a phase change material (12) that phase-transitions to the first phase and releases heat when the second phase is at or below a second temperature (T2) lower than the first temperature (T1). and,
a heat insulation case (20) having an opening (23) and housing the heat storage element (10) therein;
an opening/closing device (30) provided in the opening (23) and capable of opening and closing the opening (23);
a first heat transfer section (51) that connects the heat generating element (H) and the heat storage element (10) in a heat conductive manner and is switchable between a heat transfer state and a non-heat transfer state;
a second heat transfer part (52) that connects the object to be heated (B) and the heat storage body (10) in a heat-conducting manner and is switchable between a heat transfer state and a non-heat transfer state;
When the temperature of the heating element (H) is equal to or higher than the first temperature (T1), the opening (23) is closed and the first heat transfer part (51) is brought into the heat transfer state, and the heat insulation case opening the opening (23) when the ambient temperature of (20) is equal to or lower than the second temperature (T2) and the prescribed start conditions for the object to be heated (B) are satisfied; a control section (70) that brings the second heat transfer section (52) into a heat transfer state;
Prepare.

According to this configuration, the phase change material (12) provided in the heat storage body (10) switches between a state of absorbing heat and a state of releasing heat based on the temperature, so there is no need to apply a large pressure, for example. Therefore, there is no need to increase the strength or durability of the peripheral member, and consumption of a large amount of energy for the trigger can be suppressed. Therefore, it is possible to store and release heat with high energy efficiency with a relatively simple configuration. Further, in this configuration, when the temperature of the heating element (H) is equal to or higher than the first temperature (T1), the opening (23) is closed and the first heat transfer section (51) is brought into the heat transfer state. , the heat of the heating element (H) can be transferred to the heat storage element (10), and the phase change material (12) can be phase-transitioned to the second phase for heat storage. On the other hand, when the outside air temperature is equal to or lower than the second temperature (T2) and the starting conditions are satisfied, the opening (23) is opened and the second heat transfer part (52) is brought into the heat transfer state, The outside air flowing into the heat insulating case (20) from the opening (23) cools the heat storage body (10) to a second temperature (T2) or less, thereby causing the phase change material (12) to undergo a phase change to the first phase. can dissipate heat. Then, the heat generated by the heat dissipation can be transferred to the object to be heated (B) to heat the object to be heated (B). In this way, it is possible to absorb and store heat from the heating element (H) with a relatively simple structure and with high energy efficiency, and to heat the object (B) by dissipating the stored heat as necessary. .

As one aspect,
The starting condition is that the temperature of the object to be heated (B) is equal to or lower than a third temperature (T3), which is the lower limit of a temperature range suitable for exhibiting the performance of the object to be heated (B), and It is preferable that there is an instruction to start using the object to be heated (B).

According to this configuration, when the heating target (B) is at a low temperature that is not suitable for exhibiting its performance at the timing of starting to use the heating target (B), the heat storage body (10) The object to be heated (B) can be heated by the radiated heat and brought into a temperature state suitable for exhibiting performance.

As one aspect,
It is preferable to further include a blower (40) provided at the opening (23) or at a position adjacent to the opening (23) to introduce external air into the heat insulating case (20) when the opening (23) is opened.

According to this configuration, outside air having a temperature equal to or lower than the second temperature (T2) can efficiently flow into the heat insulation case (20) through the opening (23). In addition, since the cold air can be sent to the heat storage body (10) by forced convection instead of relying on natural convection, the temperature of the heat storage body (10) can be efficiently lowered. Therefore, the heat can be rapidly dissipated from the heat storage body (10) as required.

As one aspect,
a first sensor (81) that detects the temperature of the heating element (H);
a second sensor (82) for detecting the outside air temperature around the heat insulating case (20);
is preferably further provided.

According to this configuration, based on the detection result of each sensor, the timing for closing the opening (23) and setting the first heat transfer section (51) for heat transfer, and the timing for closing the opening (23) It is possible to appropriately determine the timing of opening the second heat transfer section (52) and setting the second heat transfer section (52) in the heat transfer state.

As one aspect,
It is preferable to further include a third sensor (83) that detects the temperature of the object to be heated (B).

According to this configuration, when there is a condition regarding the temperature of the object to be heated (B) in the start conditions (that is, the third temperature (T3) or lower), it is appropriately determined whether or not the condition is satisfied. can judge.

As one aspect,
The heating element (H) and the object to be heated (B) are the same member (D),
It is preferable that the first heat transfer section (51) and the second heat transfer section (52) are shared.

According to this configuration, heat is absorbed and stored when the object to be heated (B) itself is generating heat, and the stored heat is dissipated at different times when necessary, and the object to be heated (B) ) can be heated. Moreover, since the first heat transfer section (51) and the second heat transfer section (52) are shared, the system configuration can be simplified.

As one aspect,
It is preferably used in a moving body or facility equipped with a battery as a power supply source, and the battery is the heating element (H) and the object to be heated (B).

A battery has a temperature range suitable for exhibiting its performance, and it is not preferable if the temperature during use is too high or too low. In this regard, by using the battery as a power supply source provided in a moving object or facility as in this configuration as a heating element (H) and an object to be heated (B), heat is absorbed when the temperature of the battery rises. It is possible to store heat while suppressing the temperature rise, and then, for example, to preheat the battery by dissipating heat during startup at a low temperature. Therefore, it is possible to use the heat generated by itself with a time lag and use the battery in the proper temperature range for a long period of time.

As one aspect,
The heating element (H) and the object to be heated (B) are separate members, and the first heat transfer section (51) and the second heat transfer section (52) are provided independently of each other,
It is preferable that the control section (70) brings the first heat transfer section (51) into the non-heat transfer state when bringing the second heat transfer section (52) into the heat transfer state.

According to this configuration, when the object to be heated (B) is heated using the heat radiated by the heat storage body (10), the heat is transmitted to the heating element (H) through the first heat transfer part (51). can be suppressed, and the object to be heated (B) can be efficiently heated.

The heat storage and heat dissipation system according to the present disclosure only needs to achieve at least one of the effects described above.

1 heat storage and heat radiation system 10 heat storage element 12 phase change material 20 heat insulation case 23 opening 30 opening and closing device 40 air blower 50 shared heat transfer section (first heat transfer section, second heat transfer section)
51 First heat transfer section 52 Second heat transfer section 81 First sensor 82 Second sensor 83 Third sensor D Heating element and object to be heated (heating element, object to be heated)
H heating element B object to be heated T1 first temperature T2 second temperature T3 third temperature

Claims (8)

A phase transition material having bistability, when the crystal structure is in the first phase, when heated to the first temperature or higher, it absorbs heat and undergoes a phase transition to the second phase, and when the crystal structure is in the second phase a heat storage body comprising a phase transition material that phase transitions to the first phase and releases heat when the temperature reaches a second temperature lower than the first temperature;
a heat insulating case having an opening and housing the heat storage element therein;
an opening/closing device provided in the opening and capable of opening and closing the opening;
a first heat transfer section that connects the heat generating element and the heat storage element in a heat conductive manner and is switchable between a heat transfer state and a non-heat transfer state;
a second heat transfer section that connects the object to be heated and the heat storage body so as to allow heat conduction and is switchable between a heat transfer state and a non-heat transfer state;
When the temperature of the heating element is equal to or higher than the first temperature, the opening is closed and the first heat transfer section is brought into the heat transfer state, and the outside air temperature around the heat insulating case is equal to or lower than the second temperature. a control unit that brings the opening into an open state and places the second heat transfer unit into a heat transfer state when a specified start condition regarding the object to be heated is satisfied;
A heat storage and heat dissipation system. The start condition is that the temperature of the object to be heated is equal to or lower than a third temperature, which is a lower limit value of a temperature range suitable for exhibiting the performance of the object to be heated, and an instruction to start using the object to be heated. The heat storage and heat dissipation system according to claim 1, wherein there is a 3. The heat storage and heat dissipation system according to claim 1, further comprising a blower provided at or adjacent to said opening to introduce outside air into said heat insulating case when said opening is opened. a first sensor that detects the temperature of the heating element;
a second sensor that detects the outside air temperature around the insulating case;
The heat storage and heat dissipation system according to any one of claims 1 to 3, further comprising: The heat storage/radiation system according to any one of claims 1 to 4, further comprising a third sensor that detects the temperature of the object to be heated. The heating element and the object to be heated are the same member,
The heat storage/radiation system according to any one of claims 1 to 5, wherein the first heat transfer section and the second heat transfer section are shared. 7. The heat storage and heat dissipation system according to claim 6, which is used in a moving body or facility provided with a battery as a power supply source, and wherein said battery is said heating element and said object to be heated. The heating element and the object to be heated are separate members, and the first heat transfer section and the second heat transfer section are provided independently of each other,
The heat storage and heat dissipation system according to any one of claims 1 to 5, wherein the control unit brings the first heat transfer part into the non-heat transfer state when bringing the second heat transfer part into the heat transfer state. .

Images