CN203434643U - Portable charger applicable to many types of batteries - Google Patents

Abstract

The utility model relates to a portable charger applicable to many types of batteries. The charger includes a charger current output and current/voltage sampling interface, a charger power supply input interface, a battery type selection key, an LED display, a charger shell, four different types of charger charging cables and a charger circuit board; each different type of charger charging cable comprises a charger current output and current/voltage sampling interface connector, and a standard connector. With the portable charger adopted, various types of batteries such as nickel-cadmium batteries, nickel metal hydride batteries and lithium ion batteries comprising polymer, as well as various types of battery packs with different specifications, can be determined through a manual manner before charging; current adjustment or voltage adjustment is performed on a power output circuit through a control circuit, and therefore, charging can be performed in a bidirectional adjustment mode; and at the same time, standard connectors matched with charged storage batteries are selected according to different types of the charged storage batteries, and the charged storage batteries are connected with the charger, and therefore, various types of storage batteries which are required to be charged can be fully charged.

Description

Portable Charger for Multiple Types of Batteries

technical field

The utility model relates to the technical field of storage battery pack power supply, in particular to a portable charger for multiple types of storage batteries, which can charge and maintain multiple types of battery equipment. the

Background technique

Currently, various types of storage batteries are used as power supplies for portable devices and are equipped on various portable devices. And each type of storage battery has its own electrical performance characteristics and charging requirements, so it is necessary to have a matching special charger to ensure the charging safety and reliability of the storage battery when it is charged. What follows is that if a variety of mobile devices are carried, the number of matching chargers must be carried. This is very inconvenient for many equipment users who need outdoor activities. In addition to being inconvenient to carry, some devices cannot be charged in the field with the original charger. It makes the work efficiency low when charging in the field, especially when it is necessary to select and charge various types of mobile battery packs such as nickel-cadmium, nickel-metal hydride, lithium-ion (including polymers) or various types of batteries with different specifications in the field. Especially complicated. Therefore, how to use the same charging device to effectively charge different types of battery packs in various situations, and a portable charger for multiple types of batteries has become a key requirement for field charging of portable devices. the

Contents of the invention

The utility model aims to solve the technical problem that the portable charger for multi-type batteries proposed above can use the same charging equipment to effectively charge different types of battery packs under various circumstances, and designs a multi-type battery charger. Portable charger, the charger can be manually selected for nickel-cadmium, nickel-metal hydride, lithium-ion (including polymer) or various types of batteries, and for various types of mobile battery packs of different specifications to determine the type before charging, The charger is equipped with a power input interface, which can accept 12v~28v dynamic DC power provided by the outside world. The smart chip of the charger controls the power output circuit through the control circuit according to the type of the battery to be charged determined by the charger. Adjust the current or adjust the voltage to charge in a two-way regulation mode, and at the same time select the matching standard connector according to the different types of the battery to be charged to connect with the charger, so that various types of batteries that need to be charged can be fully charged . the

The technical scheme provided by the utility model is:

Portable charger for multiple types of batteries, the charger includes: charger current output and current and voltage sampling interface, charger power input interface, battery type selection key, LED display, charger shell, four different types of charger charging cables and the charger circuit board, the four charging cables of different types of chargers also include charger current output and current and voltage sampling interface connectors, as well as the first standard connector, the second standard connector, the third standard connector and the third standard connector. Four standard connectors, the charger current output and current and voltage sampling interface are fixedly connected to one side of the charger shell, used to connect the interface connectors of different types of charger charging cables, through the standard connectors of different types of batteries The internal positive and negative cables and the positive and negative poles of the battery to be charged constitute the charging circuit of the charger, and also form a sampling circuit for the current and voltage of different types of batteries. The charger power input interface is fixedly connected to the charger shell The other side is used to connect the input power supply. The input power supply is a converted DC dynamic power supply. The input power supply can be converted electric energy such as commercial power, wind power, solar energy, etc. The battery type selection key is located at the charging The top surface of the device shell is used to manually select the type of battery. The type of battery to be charged can be nickel-cadmium, nickel-metal hydride, lithium-ion (including polymer), and each type of battery can have many different specifications. The battery type The circuit connection point of the selection key is connected to the charger circuit board, and the LED display is located on the top surface of the charger shell to display the charging dynamic information of the charger and the charged battery. These information include: current Charging current, battery voltage, battery temperature, charging time, battery type and specification, etc. the

The charger current output and current voltage sampling interface connectors provided at one end of the four different types of charger charging cables are connected with the charger current output and current voltage sampling interface, wherein the charger current output and current voltage sampling interface The connectors are connected to the current output and current and voltage sampling interfaces of the charger in the form of tightly matched joints. The other ends of each charging cable of different types of chargers are respectively set as the first standard connector, the second standard connector, and the third The standard connector and the fourth standard connector can be used to connect different types of rechargeable batteries. The types of rechargeable batteries can be nickel-cadmium, nickel-metal hydride, lithium-ion (including polymer), and each type of battery can be a variety of different Specification. the

The charger circuit board also includes a power circuit, a control circuit, and a sampling and setting circuit, wherein the power circuit is connected to the charger power input interface through a power input line, and accepts the input signal provided from the charger power input interface. 12v ~ 28v DC dynamic power supply, and provide converted +10v and +3.3v stable control power to the control circuit and sampling and setting circuit, connected through the charger current output and current and voltage sampling interface of the charger cable The head is connected to the charger current output and current and voltage sampling interface, and is used to output different stable voltages and currents to the charged battery for charging;

The sampling and setting circuit is composed of charger current sampling, charger voltage sampling and battery voltage sampling to form a sampling circuit; The fixed circuit provides the charging current value and battery voltage value of the charged battery to the control circuit in real time, and the set current value and battery voltage value can be adjusted in real time according to the charging process.

The battery voltage sampling is provided with sampling resistors RA9, RA10 and voltage regulator diode DA1, after stabilizing the battery voltage, the voltage value of the battery is obtained by dividing the voltage of the sampling resistors RA9 and RA10;

Describe that the charger voltage sampling is equipped with sampling resistors RA11, RA12 and Zener diode DA2. After stabilizing the charger voltage, the voltage value output by the charger is obtained by dividing the voltage of the sampling resistors RA11 and RA12;

The charger current sampling is provided with sampling resistors RA2, RA3 and operational amplifier NA1A to form an operational amplifier circuit to obtain the charger current sampling value;

Describe the current output setting of the charger, which is composed of resistors RA4~RA8 and operational amplifier NA2. The operational amplifier circuit adjusts and amplifies the control output current value output by the charger;

The voltage output setting of the charger is composed of resistors RA13-RA17 and an operational amplifier NA3. The operational amplifier circuit adjusts and amplifies the control output voltage value output by the charger;

The control circuit is composed of smart chip NA6 and button KA1, wherein smart chip NA6 includes AD sampling port P0.4 for charger voltage sampling, AD sampling port P0.3 for battery voltage sampling, and AD sampling port P0. 2 is used for charger current sampling, and also includes DA output port P0.0 for controlling output current, DA output port P0.1 for controlling output voltage, and I/O ports P2.0~P2.4 connected to The LED display is used to output the data display of the LED, and the I/O port P2.5 is used to connect the key value of the button KA1, and the button KA1 is connected to the battery type selection button (3). the

The intelligent chip NA6 can dynamically adjust the charging voltage according to the change of the charger, and the adjustable range of the charging voltage is from 8V to 28V, so as to realize the bidirectional adjustment function of current and voltage. the

The function realized by the utility model is as follows:

The utility model is used for a portable charger for multiple types of batteries, and provides a battery that can be used for various types of batteries, including nickel cadmium, nickel hydrogen, and lithium ions (including polymers), and the acceptable range of charging current is from 400mA to 1400mA. Between, the portable charger whose charging voltage can accept small-capacity batteries ranging from 8V to 28V can realize the requirement that a portable charger can charge different types of batteries separately. Different types of charging in the whole process of dynamic current regulation or voltage regulation ensure the flexibility and diversity of the utility model in battery maintenance, thereby improving the convenience of using the portable charger in the moving process. the

Description of drawings

Fig. 1 is the portable charger schematic diagram that the utility model is used for multi-type battery;

Fig. 2 is the functional flow diagram of this portable charger of the utility model;

Fig. 3 is the sampling and setting circuit principle diagram of this utility model portable charger;

Fig. 4 is a schematic diagram of the control circuit of the portable charger of the present invention.

Detailed ways

The utility model is explained in more detail below in conjunction with reference figures.

Please refer to Figure 1, a portable charger for multiple types of batteries, the charger includes: charger current output and current voltage sampling interface (1), charger power input interface (2), battery type selection key (3), LED display (4), charger shell (6), four different types of charger charging cables (7) and charger circuit board, described four different types of charger charging cables (7) also contain charger current output and The current and voltage sampling interface connector (5), and the first standard connector (7-1), the second standard connector (7-2), the third standard connector (7-3) and the fourth standard connector ( 7-4), the current output of the charger and the current and voltage sampling interface (1) are fixedly connected to one side of the charger shell (6), and are used to connect the charger current output of different types of charger charging cables (7) and the current and voltage sampling interface connector (5), please refer to Table 1, and the first standard connector (7-1), the second standard connector (7-2), and the third standard connector (7-3) and the fourth standard connector (7-4), which can correspond to different battery types and specifications, the positive and negative cables in each of the four standard connectors and the positive and negative poles of the battery to be charged constitute the charging circuit of the charger, and at the same time Also form the current and voltage sampling loops of different types of storage batteries, the charger power input interface (2) is fixedly connected to the other side of the charger shell (6), and the input power is a converted DC dynamic power supply, wherein The input power can be converted electrical energy such as commercial power, wind power, solar energy, etc. The battery type selection key (3) is located on the top surface of the charger shell (6), and is used to manually select the battery type, please refer to Table 1 , the type of the battery to be charged can be nickel cadmium, nickel metal hydride, lithium ion (containing polymer), each type of battery can be a variety of different specifications, and the circuit connection point of the battery type selection key (3) is connected to the On the charger circuit board, use the battery type selection key (3) to specify the battery type serial number corresponding to the optional table 1 before charging the specified battery, and the LED display (4) is located on the charger shell (6) The top surface is used to display the charging dynamic information of the charger and the charged battery, which includes: current charging current, battery voltage, battery temperature, charging time, battery type and specification, etc. the

Table of optional battery types (1)

Please refer to Fig. 1, the charger current output and current voltage sampling interface connector (5) provided at one end of the four different types of charger charging cables (7), and the charger current output and current voltage sampling interface (1) The output current of the charger flows to the charged battery (8) through the charger current output and the current and voltage sampling interface connector (5), and at the same time all the dynamic information of the charged battery (8) passes through the charger The current output and the current and voltage sampling interface connector (5) are collected into the control circuit. Wherein the charger current output and current and voltage sampling interface connector (5) and the charger current output and current and voltage sampling interface (1) adopt connectors that can be aviation plugs and sockets or can be adopted so that they can be closely matched and connected The other end of each different type of charger charging cable (7) is respectively provided with the first standard connector (7-1), the second standard connector (7-2), the third standard connector ( 7-3) and the fourth standard connector (7-4), which can be used to connect different types of rechargeable batteries. The types of rechargeable batteries can be nickel-cadmium, nickel-metal hydride, lithium-ion (including polymer), please refer to optional batteries Type table (1), each standard plug type can correspond to different types of batteries, and each type of storage battery can have many different specifications.

Please refer to Fig. 2, the described charger circuit board also includes a power circuit, a control circuit and a sampling and setting circuit, wherein the power circuit is connected with the described charger power input interface (2) through a power input line, and receives The 12v~28v DC dynamic power supply provided from the charger power input interface (2), where the input power can be converted DC power from commercial power, wind power, solar energy, etc., is converted into stable DC power through the power circuit, and supplied to the control circuit and sampling And the setting circuit provides the stable control power of +10v and +3.3v after conversion, through the charger current output of the charger cable (7) and the current and voltage sampling interface connector (5) and the charger The current output and current and voltage sampling interface (1) are connected to output different stable voltages and currents to the charged battery for charging;

Please refer to Figure 3, the sampling and setting circuit is composed of charger current sampling, charger voltage sampling and battery voltage sampling to form the sampling circuit part, and the control circuit is composed of charger current output control and charger voltage output control, and through The internal circuit provides the charging current value and battery voltage value of the charged battery to the sampling and setting circuit and the control circuit in real time, and the set current value and battery voltage value can be adjusted in real time according to the charging process,

Please refer to the battery voltage sampling in Figure 3, where there are sampling resistors RA9, RA10 and Zener diode DA1, the voltage value of the battery is obtained by dividing the voltage of the sampling resistors RA9 and RA10, the VF point is the input node of the measured battery voltage, and VAD is The measured battery voltage sampling output node, the battery voltage is divided by VF through the sampling resistors RA9 and R10, and then connected to the VAD node and the sampling port P0.4 of the smart chip NA6;

Please refer to the charger voltage sampling in Figure 3, it is described that the charger voltage sampling part is equipped with sampling resistors RA11, RA12 and Zener diode DA2, and the voltage value output by the charger is obtained by dividing the voltage of the sampling resistors RA11 and RA12, and the BF node It is the charger voltage input node, BAD is the charger voltage output node, and the charger voltage is divided by the sampling resistors R11 and R12 from the BF node to the BAD node and connected to the sampling port P0.3 of the smart chip NA6;

Please refer to the charger current sampling in Figure 3, the charger current sampling part is provided with sampling resistors RA2, RA3 and operational amplifier NA1A to form an operational amplifier circuit to obtain the sampling value of the charger current, IF is the charging current of the charger passing through The signal input node of the current sensor, IAD is the output node after the current value is amplified by operation, the charging current signal of the charger is divided by the sampling resistor RA2 and RA3 from the IF node, and then amplified by the NA1A operation and then sent to the IAD node and the smart chip NA6 The sampling port P0.2 is connected;

Please refer to the charger current output control part in Figure 3, and describe the charger current output setting. The operational amplifier circuit is composed of resistors RA4~RA8 and operational amplifier NA2 to adjust and enlarge the control output current value of the charger output. Please refer to Figure 4. , the DC port DAC0 node of the smart chip NA6 is the input node for controlling the current, and the current output is controlled after the operation is amplified, and the current value of the charger is set to be output to the PWMI node after DAC0 is amplified by the operation of NA2;

Please refer to the voltage output setting of the charger in Figure 3. The operational amplifier circuit is composed of resistors RA13~RA17 and the operational amplifier NA3 to adjust and amplify the control output voltage value output by the charger. Please refer to the DC port DAC1 node of the smart chip NA6 in Figure 4. In order to control the input node of the voltage, the voltage output is controlled after the operation is amplified, and the voltage value of the charger is set to be output to the PWMV node after being amplified by the operation of NA3 from DAC1. the

See also Fig. 4, described control circuit is made up of intelligent chip NA6 and button KA1, and wherein intelligent chip NA6 can select C8051F410 for use, and this C8051F410 comprises AD sampling port P0.4 for charger voltage sampling, AD sampling port P0.3 is used for battery voltage sampling, AD sampling port P0.2 is used for charger current sampling, and also includes DA output port P0.0 for controlling output current, DA output port P0.1 for controlling output voltage, and The I/O port P2.0～P2.4 is connected to the LED display (4) for outputting the data display of the LED, and the I/O port P2.5 is used to connect the key value of the button KA1, and the button KA1 Connect with the battery type selection key (3). Please refer to Figure 4, the battery type set in Table 1 can be selected through the KA1 button, the P0.4 port is connected to the charger voltage output node BAD, and the provided charger voltage is detected in real time. Compare the sampled one with the set battery type, determine the adjustable range of the charger voltage, and keep it in the memory of the smart chip C8051F41.0 as a reference for this charging voltage range. The P0.3 port is connected to the battery voltage The output node VAD is sampled to detect the dynamic voltage of the charged battery in real time. The smart chip C8051F410 judges the rationality of the state of the collected charged battery voltage during the charging process through the battery voltage characteristics of the battery type selected in Table 1. And the measurement of the charging power, P0.2 is connected to the output node IAD after the current value is amplified by operation, and the output current of the battery to be charged is detected in real time, and P0.0 is connected to the input node DAC0 of the control current. The battery charging current characteristics of the selected battery type, combined with the dynamic battery voltage state during the charging process of the battery to be charged, adjusts the charging output current in real time. The smart chip C8051F410 can homomorphically adjust the charging current according to the change of the charger. The charging current can The adjustment range is from 400mA to 1400mA. P0.1 is connected to the input node DAC1 of the control voltage. The smart chip C8051F410 can homomorphically adjust the charging voltage according to the change of the charger. The charging voltage can be adjusted from 8V to 28V. Thus, the bidirectional regulation function of current and voltage is realized. the

Claims (3)

1. for the portable charger of polymorphic type battery, this charger comprises: charger current output and current-voltage sampling interface (1), light source of charger input interface (2), battery types options button (3), light-emitting diode display (4), charger case (6), article four, dissimilar charger charging cable (7) and charger circuit board, it is characterized in that: described four dissimilar charger charging cables (7) also contain respectively charger current output and current-voltage sampling interface connector (5), and the first standard connector (7-1), the second standard connector (7-2), the 3rd standard connector (7-3) and the 4th standard connector (7-4), the side that described charger current output and current-voltage sampling interface (1) are fixedly connected on charger case (6), be used for connecting charger current output and the current-voltage sampling interface connector (5) of dissimilar charger charging cable (7), described light source of charger input interface (2) is fixedly connected on the opposite side of charger case (6), described battery types options button (3), be positioned at the end face of charger case (6), for manually selecting the type of battery, the circuit tie point of battery types options button (3) is connected in described charger circuit board, the end face that described light-emitting diode display (4) is positioned at charger case (6) is used for the multidate information that shows charger work and be recharged pond.

2. the portable charger for polymorphic type battery according to claim 1, it is characterized in that: charger current output and current-voltage sampling interface connector (5) that one end of described four dissimilar charger charging cables (7) arranges, with being connected of charger current output and current-voltage sampling interface (1), the other end of every dissimilar charger charging cable (7) is respectively arranged with the standard connector of dissimilar battery, be respectively the first standard connector (7-1), the second standard connector (7-2), the 3rd standard connector (7-3) and the 4th standard connector (7-4), dissimilar rechargeable battery can be connected.

3. the portable charger for polymorphic type battery according to claim 1, it is characterized in that: in described charger circuit board, also include power circuit, control circuit and sampling and initialization circuit, wherein power circuit is connected with described light source of charger input interface (2) by power input line, 12v～28v direct current dynamic power supplies that acceptance provides from light source of charger input interface (2), and provide the stable control electric energy after conversion to control circuit and sampling and initialization circuit, charger current output and current-voltage sampling interface connector (5) by described charger cable (7) are connected with described charger current output and current-voltage sampling interface (1), for exporting different burning voltages and electric current to being recharged pond,

Described sampling and initialization circuit form sample circuit by charger current sampling, charger voltage sampling and battery voltage sampling, by charger current output setting and charger voltage output, set and form initialization circuit, wherein said battery voltage sampling is provided with sampling resistor RA9, RA10 and voltage stabilizing didoe DA1, obtains the magnitude of voltage of battery by sampling resistor RA9, RA10 dividing potential drop;

Narrate charger voltage sampling and be provided with sampling resistor RA11, RA12 and voltage stabilizing didoe DA2, by sampling resistor RA11, RA12 dividing potential drop, obtain the magnitude of voltage of charger output;

Described charger current sampling is provided with sampling resistor RA2, RA3 and operational amplifier NA1A, forms operational amplification circuit, obtains charger current sampled value;

Narrating charger current output sets and by resistance R A4～RA8 and operational amplifier NA2, forms the control output current value that operational amplification circuit exports charger and adjust amplification;

Described charger voltage output setting forms operational amplification circuit by resistance R A13～RA17 and operational amplifier NA3 the control output voltage values of charger output is adjusted to amplification;

Described control circuit is by intelligent chip NA6 and button KA1 and form, wherein on intelligent chip NA6, comprising AD sample port P0.4 samples for charger voltage, AD sample port P0.3 is for battery voltage sampling, AD sample port P0.2 is for charger current sampling, also include DA output port P0.0 for controlling output current, DA output port P0.1 is used for controlling output voltage, be connected described light-emitting diode display (4) shows for exporting the data of LED with I/O port P2.0～P2.4, I/O port P2.5, for connecting the key assignments of described button KA1, button KA1 is connected with described battery types options button (3).

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