CN208224456U - It is a kind of for judging the circuit of charging and discharging lithium battery state - Google Patents

Abstract

It is specifically a kind of for judging the circuit of charging and discharging lithium battery state the utility model relates to charging and discharging lithium battery field.Including voltage acquisition module, battery pack A, battery pack B, it is characterized in that: the voltage acquisition module is equipped with 24 interfaces, the port 5V of voltage acquisition module connects supply port, the port 0V of voltage acquisition module is grounded, the port A of voltage acquisition module connects RS485 line, the port B of voltage acquisition module connects RS485B line, the IN1+ of voltage acquisition module, IN2+, IN3+, IN4+, 1-GND, 2-GND, 3-GND, the port 4-GND and 5-GND is separately connected AB1, AB2, AB3, AB4, resistance R18, resistance R19, resistance R20, resistance R21 and resistance R22.The utility model is compared with the existing technology, easy to use；It is whether normal that battery pack battery capacity indication lamp, the work of mode lamp during charging and discharging can be tested.

Description

It is a kind of for judging the circuit of charging and discharging lithium battery state

Technical field

The utility model relates to charging and discharging lithium battery fields, specifically a kind of for judging charging and discharging lithium battery state Circuit.

Background technique

Lithium battery charger needs to carry out the sampling check for quality of product, after product completes production to ensure every batch of Lithium battery charger has qualified charge and discharge number, it is ensured that with the qualification rate of a batch of lithium battery charger.It is main at present Test method be constantly to lithium battery carry out charge-discharge test, whether judge the indexs such as battery capacity and the service life of product Qualification, then sometimes during the charging and discharging of battery pack, battery capacity indication lamp or mode lamp itself there are flaw or Because overusing causes testing result inaccurate, so that the normal use situation of battery pack can not be detected, can not effectively control The quality of product processed.

Summary of the invention

The utility model in order to overcome the deficiencies of the prior art, designs a kind of for judging the electricity of charging and discharging lithium battery state Whether road, battery capacity indication lamp, the work of mode lamp during charge and discharge to judge product are normal.

To achieve the above object, it designs a kind of for judging the circuit of charging and discharging lithium battery state, including voltage acquisition mould Block, battery pack A, battery pack B, it is characterized in that: the voltage acquisition module is equipped with 24 interfaces, the 5V of voltage acquisition module Port connects supply port, and the port the 0V ground connection of voltage acquisition module, the port A of voltage acquisition module connects RS485 line, voltage The port B of acquisition module connects RS485B line, IN1+, IN2+, IN3+, IN4+, 1-GND, 2-GND, 3- of voltage acquisition module The port GND, 4-GND and 5-GND be separately connected AB1, AB2, AB3, AB4, resistance R18, resistance R19, resistance R20, resistance R21 and The port IN1-, IN2-, IN3-, IN4- of resistance R22, voltage acquisition module are grounded respectively, 1-PD2,2- of voltage acquisition module PD2,3-PD2,4-PD2,5-PD2 are separately connected LED1, LED2, LED3, LED4, LED5, the LED1 and resistance R18, LED2 With resistance R19, LED3 and resistance R20, LED4 and resistance R21, LED5 and resistance R22 be connected to U21, U22, U23, On U24, U25, four tunnels of output end point of the U21 are separately connected the port IN1, IN2, IN3, IN4 of chip U1, the U22's Output end connects the port IN5 of chip U1, the port IN6 of the output end connection chip U1 of the U23, the output end of the U24 The port IN7 of chip U1, the port IN8 of the output end connection chip U1 of the U25 are connected, the chip U1 is equipped with 18 ends Mouthful, the port IN9 of chip U1 ground connection, the port CLAMP of chip U1 connects supply port, OUT1, OUT2 of chip U1, OUT3, The port OUT4, OUT7, OUT8, OUT9 is separately connected the input terminal of KM1A, KM2A, KM3A, KM4A, KM7A, KM8A, KM9A, core The port OUT5 of piece U1 divides two-way to be separately connected KM5A and KM6A, the KM1A, KM2A, KM3A, KM4A, KM5A, KM6A, The output end of KM7A, KM8A, KM9A connect supply port；The port AB1 connects relay KM11, the port the AB2 connection Relay KM12, the port AB3 connect relay KM21, and the port AB4 connects relay KM22, the relay KM11 Connection line A1 and route B1, the relay KM12 connection line A2 and route B2, the relay KM21 connection line A3 With route B3, the relay KM22 connection line A4 and route B4；The port P+ of the battery pack A connects AP+ line, battery pack The M port of A connects AM line, and the port P- of battery pack A connects AP- line, and the port P+ of battery pack B connects BP+ line, the M of battery pack B Port connects BM line, and the port P- of battery pack B connects BP- line.

The route A1 divides two-way to be separately connected resistance R1 and resistance R5, and route A2 divides two-way to be separately connected resistance R2 and electricity R6 is hindered, the route A3 divides two-way to be separately connected resistance R3 and resistance R7, and route A4 divides two-way to be separately connected resistance R4 and resistance R8, the resistance R1, resistance R2, resistance R3 and resistance R4 connect supply port, the resistance R5, resistance R6, resistance after merging R7 and resistance R8 is grounded after merging；The route B1 divides two-way to be separately connected resistance R9 and resistance R13, and route B2 divides two-way to distinguish It connects resistance R10 and resistance R14, the route B3 divides two-way to be separately connected resistance R11 and resistance R15, route B4 divides two-way point Not Lian Jie resistance R12 and resistance R16, the resistance R1, resistance R2, resistance R3 and resistance R4 connect supply port after merging, institute It states after resistance R5, resistance R6, resistance R7 and resistance R8 merge and is grounded.

The port 485A of the RS485A line connecting communication converter of the voltage acquisition module, voltage acquisition module The port 485B of RS485B line connecting communication converter, communication converter are set there are five port, the 485A of communication converter and The port 485B is separately connected voltage acquisition module, and the port RXD, TXD and GND of communication converter is separately connected No. 1 end of RS232 Mouth, No. 2 ports and No. 3 ports.

The AP+ line and BP+ line are separately connected relay KM31, the output end of relay KM31 divide two-way be separately connected after Electric appliance KM51 and relay KM71, the AP- line and BP- line are separately connected relay KM32, and relay KM32 divides two-way to distinguish Relay KM52 and relay KM72 is connected, the AM line and BM line are separately connected relay KM4, relay KM4 points of three roads point It Lian Jie not relay KM6, relay KM8 and relay KM9, the relay KM51, relay KM52, relay KM6 connection Onto the port V+, the port V- and M port of battery pack power source special module, the relay KM71 points of three tunnels are separately connected motor M, the other end of one end of resistance R17 and resistance R18, resistance R17 and resistance R18 are separately connected relay KM8 and relay KM9, the relay KM72 are connected on the other end of motor M by filament L1.

The battery pack power source special module is set there are six port, the port V+, the port V- of battery pack power source special module Relay KM51, relay KM52, relay KM6, the port L of battery pack power source special module, N-terminal are separately connected with M port Mouth and the port PE are separately connected the port L, N-port and the port PE of Switching Power Supply, and the Switching Power Supply sets there are five port, switchs The port VCC of power supply connects supply port, the port the GND ground connection of Switching Power Supply, the port L of Switching Power Supply and battery pack Special electric The port L of source module merge after, the N-port of the N-port of Switching Power Supply and battery pack power source special module merge after respectively The end L of connection switch and N-terminal, the port PE of Switching Power Supply and the port PE of battery pack power source special module connect PE after merging End.

The utility model is compared with the existing technology, easy to use；Battery pack can be tested during charging and discharging Whether battery capacity indication lamp, the work of mode lamp are normal.

Detailed description of the invention

Fig. 1 is the circuit diagram of the utility model.

Specific embodiment

The utility model is described further below according to attached drawing.

As shown in Figure 1, the voltage acquisition module is equipped with 24 interfaces, the port 5V of voltage acquisition module, which connects, to be supplied Electric port, the port the 0V ground connection of voltage acquisition module, the port A of voltage acquisition module connect RS485 line, voltage acquisition module The port B connect RS485B line, IN1+, IN2+, IN3+, IN4+, 1-GND, 2-GND, 3-GND, 4-GND of voltage acquisition module and The port 5-GND is separately connected AB1, AB2, AB3, AB4, resistance R18, resistance R19, resistance R20, resistance R21 and resistance R22, electricity The port IN1-, IN2-, IN3-, IN4- of pressure acquisition module is grounded respectively, 1-PD2,2-PD2 of voltage acquisition module, 3-PD2, 4-PD2,5-PD2 are separately connected LED1, LED2, LED3, LED4, LED5, the LED1 and resistance R18, LED2 and resistance R19, LED3 and resistance R20, LED4 and resistance R21, LED5 and resistance R22 are connected on U21, U22, U23, U24, U25, Four tunnels of the output end of the U21 point are separately connected the port IN1, IN2, IN3, IN4 of chip U1, the output end connection of the U22 The port IN5 of chip U1, the port IN6 of the output end connection chip U1 of the U23, the output end of the U24 connect chip U1 The port IN7, the U25 output end connection chip U1 the port IN8, the chip U1 be equipped with 18 ports, chip U1 The port IN9 ground connection, the port CLAMP of chip U1 connects supply port, OUT1, OUT2 of chip U1, OUT3, OUT4, OUT7, The port OUT8, OUT9 is separately connected the input terminal of KM1A, KM2A, KM3A, KM4A, KM7A, KM8A, KM9A, the OUT5 of chip U1 Port divides two-way to be separately connected KM5A and KM6A, described KM1A, KM2A, KM3A, KM4A, KM5A, KM6A, KM7A, KM8A, KM9A Output end connect supply port；The port AB1 connects relay KM11, and the port AB2 connects relay KM12, described The port AB3 connects relay KM21, and the port AB4 connects relay KM22, the relay KM11 connection line A1 and line Road B1, the relay KM12 connection line A2 and route B2, the relay KM21 connection line A3 and route B3, it is described after Electric appliance KM22 connection line A4 and route B4；The port P+ of the battery pack A connects AP+ line, and the M port of battery pack A connects AM Line, the port P- of battery pack A connect AP- line, and the port P+ of battery pack B connects BP+ line, and the M port of battery pack B connects BM line, The port P- of battery pack B connects BP- line.

The route A1 divides two-way to be separately connected resistance R1 and resistance R5, and route A2 divides two-way to be separately connected resistance R2 and electricity R6 is hindered, the route A3 divides two-way to be separately connected resistance R3 and resistance R7, and route A4 divides two-way to be separately connected resistance R4 and resistance R8, the resistance R1, resistance R2, resistance R3 and resistance R4 connect supply port, the resistance R5, resistance R6, resistance after merging R7 and resistance R8 is grounded after merging；The route B1 divides two-way to be separately connected resistance R9 and resistance R13, and route B2 divides two-way to distinguish It connects resistance R10 and resistance R14, the route B3 divides two-way to be separately connected resistance R11 and resistance R15, route B4 divides two-way point Not Lian Jie resistance R12 and resistance R16, the resistance R1, resistance R2, resistance R3 and resistance R4 connect supply port after merging, institute It states after resistance R5, resistance R6, resistance R7 and resistance R8 merge and is grounded.

The port 485A of the RS485A line connecting communication converter of the voltage acquisition module, voltage acquisition module The port 485B of RS485B line connecting communication converter, communication converter are set there are five port, the 485A of communication converter and The port 485B is separately connected voltage acquisition module, and the port RXD, TXD and GND of communication converter is separately connected No. 1 end of RS232 Mouth, No. 2 ports and No. 3 ports.

The AP+ line and BP+ line are separately connected relay KM31, the output end of relay KM31 divide two-way be separately connected after Electric appliance KM51 and relay KM71, the AP- line and BP- line are separately connected relay KM32, and relay KM32 divides two-way to distinguish Relay KM52 and relay KM72 is connected, the AM line and BM line are separately connected relay KM4, relay KM4 points of three roads point It Lian Jie not relay KM6, relay KM8 and relay KM9, the relay KM51, relay KM52, relay KM6 connection Onto the port V+, the port V- and M port of battery pack power source special module, the relay KM71 points of three tunnels are separately connected motor M, the other end of one end of resistance R17 and resistance R18, resistance R17 and resistance R18 are separately connected relay KM8 and relay KM9, the relay KM72 are connected on the other end of motor M by filament L1.

The battery pack power source special module is set there are six port, the port V+, the port V- of battery pack power source special module Relay KM51, relay KM52, relay KM6, the port L of battery pack power source special module, N-terminal are separately connected with M port Mouth and the port PE are separately connected the port L, N-port and the port PE of Switching Power Supply, and the Switching Power Supply sets there are five port, switchs The port VCC of power supply connects supply port, the port the GND ground connection of Switching Power Supply, the port L of Switching Power Supply and battery pack Special electric The port L of source module merge after, the N-port of the N-port of Switching Power Supply and battery pack power source special module merge after respectively The end L of connection switch and N-terminal, the port PE of Switching Power Supply and the port PE of battery pack power source special module connect PE after merging End.

When the utility model is used, battery pack seat is formed by battery mounting and battery pack connection plug；By R1~R4 light Quick resistance and R5~R8 metalfilmresistor form A station, form B by R9~R12 photo resistance and R13~R16 metalfilmresistor Station, and collectively constitute indicator light acquisition jig.Switch of working position mould group is formed by relay KM1, KM2, KM3, KM4；By customizing Voltage acquisition module voltage input end acquisition indicator light feedback voltage signal, the control actuating of relay of the end I/O, PORT COM pass through Communication converter is connect with PC；It is made of R18~R22, LED1~LED5, U2, prevents relay drive circuit from occurring abnormal existing As when damage indicator light signal acquisition, relay control section circuit；Be made of U1, KM1~KM8, U1 receive photoelectricity every Relay coil is driven to work from next voltage signal is transferred to.

The utility model testing process is as follows: battery pack being inserted into battery pack seat first and indicator light acquisition jig is put It sets at battery pack indicator light, equipment KM1, KM2, KM3, KM4 relay connects A channel circuit and starts to charge test, equipment Battery pack power source special module is switched to indicator light in battery pack and acquires jig the sending of battery pack indicator light by KM5, KM6 actuation Luminous intensity be converted into voltage signal, voltage acquisition module, which receives to upload in PC device software after voltage signal, to be sentenced Disconnected, off device relay KM5, KM6 complete charging measurement.Subsequent equipment KM7, which is attracted, is switched to motor, equipment KM8 motor It is attracted and low rate start identification resistance is switched to battery pack, battery pack starts low rates of discharge, and indicator light acquires jig battery pack The luminous intensity that indicator light issues is converted into voltage signal, and voltage acquisition module uploads to PC device software after receiving voltage signal Inside judged, low rates of discharge is disconnected by rear KM8, and end-use device KM9, which is attracted, is switched to battery high-speed starting identification resistance Group, battery pack start high rate discharge, and indicator light acquires jig and the luminous intensity that battery pack indicator light issues is converted into voltage at this time Signal, voltage acquisition module, which receives to upload in PC device software after voltage signal, to be judged, all tests pass through rear PC Device software shows PASS.Then the test of selection channel B, equipment KM1, KM2, KM3, KM4 relay are connected channel B circuit, are followed Ring above-mentioned steps.

Claims (5)

1. a kind of for judging the circuit of charging and discharging lithium battery state, including voltage acquisition module, battery pack A, battery pack B, Be characterized in: the voltage acquisition module is equipped with 24 interfaces, and the port 5V of voltage acquisition module connects supply port, voltage The port 0V of acquisition module is grounded, and the port A of voltage acquisition module connects RS485 line, the port the B connection of voltage acquisition module RS485B line, the port IN1+, IN2+, IN3+, IN4+, 1-GND, 2-GND, 3-GND, 4-GND and 5-GND of voltage acquisition module It is separately connected AB1, AB2, AB3, AB4, resistance R18, resistance R19, resistance R20, resistance R21 and resistance R22, voltage acquisition module The port IN1-, IN2-, IN3-, IN4- be grounded respectively, 1-PD2,2-PD2,3-PD2,4-PD2,5-PD2 of voltage acquisition module It is separately connected LED1, LED2, LED3, LED4, LED5, the LED1 and resistance R18, LED2 and resistance R19, LED3 and resistance R20, LED4 and resistance R21, LED5 and resistance R22 are connected on U21, U22, U23, U24, U25, and the U21's is defeated Four tunnels of outlet point are separately connected the port IN1, IN2, IN3, IN4 of chip U1, the IN5 of the output end connection chip U1 of the U22 Port, the port IN6 of the output end connection chip U1 of the U23, the port IN7 of the output end connection chip U1 of the U24, institute The port IN8 of the output end connection chip U1 of U25 is stated, the chip U1 is equipped with 18 ports, and the port IN9 of chip U1 connects The port CLAMP on ground, chip U1 connects supply port, the end OUT1, OUT2, OUT3, OUT4, OUT7, OUT8, OUT9 of chip U1 Mouth is separately connected the input terminal of KM1A, KM2A, KM3A, KM4A, KM7A, KM8A, KM9A, and two-way point is divided in the port OUT5 of chip U1 Not Lian Jie KM5A and KM6A, described KM1A, KM2A, KM3A, KM4A, KM5A, KM6A, KM7A, KM8A, KM9A output end connection Supply port；The port AB1 connects relay KM11, and the port AB2 connects relay KM12, the port the AB3 connection Relay KM21, the port AB4 connect relay KM22, the relay KM11 connection line A1 and route B1, it is described after Electric appliance KM12 connection line A2 and route B2, the relay KM21 connection line A3 and route B3, the relay KM22 company Link A4 and route B4；The port P+ of the battery pack A connects AP+ line, and the M port of battery pack A connects AM line, battery pack A The port P- connect AP- line, the port P+ of battery pack B connects BP+ line, and the M port of battery pack B connects BM line, the P- of battery pack B Port connects BP- line.

2. it is according to claim 1 a kind of for judging the circuit of charging and discharging lithium battery state, it is characterized in that: the route A1 divides two-way to be separately connected resistance R1 and resistance R5, and route A2 divides two-way to be separately connected resistance R2 and resistance R6, the route A3 Two-way is divided to be separately connected resistance R3 and resistance R7, route A4 divides two-way to be separately connected resistance R4 and resistance R8, the resistance R1, electricity Resistance R2, resistance R3 and resistance R4 connect supply port after merging, after the resistance R5, resistance R6, resistance R7 and resistance R8 merge Ground connection；The route B1 divides two-way to be separately connected resistance R9 and resistance R13, and route B2 divides two-way to be separately connected resistance R10 and electricity Hinder R14, the route B3 divides two-way to be separately connected resistance R11 and resistance R15, route B4 divide two-way be separately connected resistance R12 and Resistance R16, the resistance R1, resistance R2, resistance R3 and resistance R4 connect supply port after merging, the resistance R5, resistance R6, Resistance R7 and resistance R8 is grounded after merging.

3. it is according to claim 1 a kind of for judging the circuit of charging and discharging lithium battery state, it is characterized in that: the voltage The port 485A of the RS485A line connecting communication converter of acquisition module, the RS485B line connecting communication conversion of power supply acquisition module The port 485B of device, communication converter are set there are five port, and the port 485A and 485B of communication converter is separately connected power supply and adopts Collect module, the port RXD, TXD and GND of communication converter is separately connected No. 1 port, No. 2 ports and No. 3 ports of RS232.

4. it is according to claim 1 a kind of for judging the circuit of charging and discharging lithium battery state, it is characterized in that: the AP+ Line and BP+ line are separately connected relay KM31, and the output end of relay KM31 divides two-way to be separately connected relay KM51 and relay Device KM71, the AP- line and BP- line are separately connected relay KM32, and relay KM32 divides two-way to be separately connected relay KM52 With relay KM72, the AM line and BM line are separately connected relay KM4, and relay KM4 points of three tunnels are separately connected relay KM6, relay KM8 and relay KM9, the relay KM51, relay KM52, that relay KM6 is connected to battery pack is dedicated In the port V+ of power module, the port V- and M port, the relay KM71 points of three tunnels be separately connected motor M, resistance R17 and The other end of one end of resistance R18, resistance R17 and resistance R18 are separately connected relay KM8 and relay KM9, the relay KM72 is connected on the other end of motor M by filament L1.

5. it is according to claim 4 a kind of for judging the circuit of charging and discharging lithium battery state, it is characterized in that: the battery Group power source special module is set there are six port, the port V+, the port V- and the M port of battery pack power source special module be separately connected after Electric appliance KM51, relay KM52, relay KM6, the port L, N-port and the port PE of battery pack power source special module are separately connected The port L, N-port and the port PE of Switching Power Supply, the Switching Power Supply are set there are five port, and the port VCC of Switching Power Supply connects Supply port, the port the GND ground connection of Switching Power Supply, the port L of Switching Power Supply and the port L of battery pack power source special module merge Later, the N-port of Switching Power Supply and the N-port of battery pack power source special module are separately connected the end L and the N of switch after merging End, the port PE of Switching Power Supply and the port PE of battery pack power source special module connect the end PE after merging.