CN110806519A - Aging detector and aging testing method - Google Patents

Abstract

The invention discloses an aging detector and an aging test method. The aging detector includes an aging box, an aging test power supply for providing a test current to a battery in the aging box, and an aging detection unit for controlling the entire aging process. The aging test power supply and the aging detection unit are installed in the aging box, and the power supply end of the aging test power supply is electrically connected with the power transmission end of the aging box, and the signal transmission port of the aging detection unit is signally connected with the signal transmission port of the aging box; The method includes the following steps: installing the fixture on the fixture board and electrically connecting with each port of the fixture board; installing the fixture board on the fixture board support component and electrically connecting it with the charge and discharge processor; evaluating the life of the fixture at different temperatures , contact resistance, elastic force, temperature rise to measure; discharge, complete the test. The beneficial effects of the invention are: the aging test can be carried out on the fixture, the operation is simple, the replacement is convenient, and the fixtures of different types can be replaced.

Description

A kind of aging detector and aging test method

technical field

The invention relates to an aging detector and an aging test method, belonging to the technical field of lithium battery testing

Background technique

Lithium-ion batteries have many advantages such as high energy, small size, light weight, high specific energy, good safety, and flexible design, and are widely used in new energy vehicles, energy storage facilities and other products.

In the production process of lithium-ion batteries, the charging and discharging of lithium-ion batteries is one of the most critical processes, and the fixture is very important for the reliability and safety of the charging and discharging process of lithium-ion batteries.

With the development of the lithium battery industry, lithium battery manufacturers have higher and higher requirements for battery performance in order to win a higher market share. Higher requirements are placed on the life and contact resistance of the fixture, so the probe aging test needs to be carried out, but the current aging device usually performs the aging test on the battery, and lacks the aging test on the fixture.

SUMMARY OF THE INVENTION

In order to solve the problem of lacking the aging test for the fixture, the present invention proposes an aging detector and an aging test method which are simple to test, easy to replace, and can perform the aging test on the fixture.

An aging detector according to the present invention is characterized in that it includes an aging box for performing aging test on the charging and discharging fixture of the lithium battery, an aging test power supply for providing a test current to the batteries in the aging box, and an aging test power source for controlling the whole battery. The aging detection unit of the aging process, the aging test power supply and the aging detection unit are installed in the aging box, and the power supply end of the aging test power supply is electrically connected with the transmission end of the aging box, and the signal transmission port of the aging detection unit is connected with the aging box. The signal transmission port signal connection;

The aging box includes a box body and a charging and discharging unit arranged in the box. The charging and discharging unit includes a lifting adjustment mechanism, a clamp contact unit and a battery contact unit. The lifting adjustment mechanism includes a bottom plate, a lifting plate, a guide column, a lifting A cylinder and a first guide rail, the bottom plate is horizontally laid in the aging box, the lower part of the guide column is fixedly connected to the bottom plate; the lifting plate is slidably installed on the upper part of the guide column, and the middle part of the lifting plate is provided with a hollow for installing the clamp contact unit A first guide rail for installing the pole lug assembly is installed on the opposite sides of the lifting plate; the lifting cylinder is vertically suspended at the bottom of the lifting plate, and the telescopic end of the lifting cylinder is fixed to the bottom plate, so that the lifting plate is Vertically lift along the guide column under the drive of the lift cylinder;

The fixture contact unit includes a test platform, a fixture contact piece for contacting the fixture, a tab assembly for signal connection with the aging detection unit, and a first horizontal driving cylinder for driving the test level to move horizontally, the test platform The opposite ends are each equipped with a pole lug assembly, and the bottom of the pole lug assembly is slidably connected to the first guide rail on the same side of the lifting plate; the first horizontal driving cylinder is installed on the lifting plate, wherein the first horizontal driving cylinder The telescopic end is connected to the rear of the test platform, so that the test platform can slide along the first guide rail assembly driven by the first horizontal driving cylinder; the surface of the test platform is provided with several sets of clamp contact pieces for contacting the clamp of the battery contact unit, and The power transmission end of the fixture contact is electrically connected to the power supply end of the aging test power supply, the signal transmission port of the fixture contact is electrically connected to the first signal transmission end of the tab assembly, and the second signal transmission end of the tab assembly is electrically connected to the aging detection unit The signal transmission port signal connection;

The battery contact unit includes a clamp plate, a clamp disposed on the clamp plate, a second horizontal driving cylinder for driving the clamp plate to move horizontally back and forth, a clamp plate support assembly for supporting the clamp plate, and a second guide rail assembly, the The fixture board is laid on the test area between the bottom plate and the lifting board through the fixture board support assembly, and the fixture board is slidably connected to the fixture board support component through the second guide rail component; the surface of the fixture board facing the fixture contact unit is arranged with multiple sets that can be connected with the fixture contact unit. The fixture contacts are in contact with the connected fixtures, and the connection port of the fixture is in contact with the connection port of the mounting hole on the fixture board, so that the fixture is connected to the power supply end of the aging test power supply through the corresponding connection port on the fixture board, The signal connection end of the aging detection unit is electrically connected; the second horizontal driving cylinder is installed on the bottom plate, and the telescopic end of the second horizontal driving cylinder is connected with the clamp plate, for driving the clamp plate along the second guide rail assembly Move the axis horizontally to adjust the position of the fixture;

The aging test power supply is arranged in the aging box, and the power supply end of the test power supply is electrically connected with the power transmission end of the fixture contact unit;

The aging detection unit includes a charge and discharge processor and a signal acquisition unit, wherein the charge and discharge controller is arranged in the aging box, and the control end of the charge and discharge processor is electrically connected to the control port of the fixture contact unit; signal acquisition The unit is arranged in the test area of the aging box, and the signal output ends of the signal acquisition unit are respectively electrically connected with the signal input ends of the charge and discharge processor.

The fixture plate is provided with mounting holes for mounting fixtures, and each mounting hole is provided with a connection port for electrical connection with the charging and discharging test device, the test power supply and the test control device; the fixture is mounted on the fixture plate and faces the detection unit the end face of the fixture, and the connection port of the fixture is in contact with the connection port of the mounting hole, so that the fixture is connected to the power supply end of the test power supply, the control end of the charge and discharge processor, and the tester through the corresponding connection port on the fixture board. The control device is electrically connected.

The signal acquisition unit includes a pressure sensor, a temperature sensor and a voltmeter, the pressure sensor is arranged between the test platform and the lower bottom plate, the signal output end of the pressure sensor and the signal input end of the charge and discharge processor The electrical connection is used to collect the pressure on the test platform to reflect the elastic force information of the fixture; the temperature sensor is arranged on the fixture board or the test platform, and the signal output end of the temperature sensor is connected to the signal of the charge and discharge processor. The input end is electrically connected to collect temperature information in the capacity space; the voltmeter is arranged in the installation area of the rack, and the connection end of the voltmeter is electrically connected with the corresponding connection end on the fixture board, and the Used to measure the contact resistance of the fixture.

A temperature controller is also added in the aging box, and the control end of the temperature controller is electrically connected with the control end of the charge and discharge processor for adjusting the temperature of the test area.

The test power supply is a constant current power supply.

The second guide rail assembly is axially parallel to the first guide rail assembly, and the second guide rail assembly has the same structure as the first guide rail assembly, including a horizontally laid guide rail and a slider that can move horizontally along the axial direction of the guide rail, wherein the guide rail is laid On the lifting plate or the fixture plate support assembly, the bottom of the slider is slidingly matched with the guide rail, and the upper part of the slider is fixedly connected with the test platform or the fixture plate, so that the test platform or the fixture plate can slide along the corresponding guide rail driven by the corresponding slider.

The aging test method that utilizes a kind of aging detector of the present invention to carry out, comprises the following steps:

1) Mount the jig on the jig plate:

Select the matching fixture board according to the fixture model, and electrically connect the test end, power transmission end and control end of the fixture to the corresponding voltmeter, test power supply and charge and discharge processor through the corresponding connection ports on the fixture board;

2) Install the fixture plate on the fixture plate support assembly:

The fixture board is installed in the test tooling mechanism, and the connection ports connected with the test end, the transmission end and the control end of the fixture are respectively electrically connected with the corresponding voltmeter, test power supply and charge and discharge processor, so as to realize the fixture, the voltmeter, the test The electrical connection of the power supply and the charge and discharge processor;

3) Determination of fixture life, contact resistance, elastic force and temperature rise at different temperatures:

Drive the cylinder to shrink, so that the battery tab plate is lowered, and the fixture is in contact with the battery tab. The fixture is tested according to the aging process on the charge and discharge processor, and the fixture is tested according to the aging process on the charge and discharge processor. Test room temperature separately Fixture life, contact resistance, elastic force, temperature rise under state and high temperature state, and transmit the test results to the charge and discharge processor;

4) Discharge:

After the test is completed, the lifting plate rises under the driving of the lifting cylinder, the clamp is disengaged from the battery tab, and the clamp is taken out to complete the test.

The beneficial effects of the invention are: the aging test can be carried out on the fixture, the operation is simple, the replacement is convenient, and the fixtures of different types can be replaced.

Description of drawings

Figure 1a is a structural diagram of the present invention.

Figure 1b is a front view of the present invention.

Figure 1c is a side view of the present invention.

Figure 1d is a top view of the present invention.

FIG. 2a is a structural diagram of the charging and discharging unit of the present invention.

Figure 2b is a front view of the charging and discharging unit of the present invention.

Figure 2c is a side view of the charging and discharging unit of the present invention.

FIG. 2d is a top view of the charging and discharging unit of the present invention.

Fig. 3a is a structural diagram of a clamp contact unit of the present invention.

Figure 3b is a front view of the clamp contact unit of the present invention.

Figure 3c is a side view of the clamp contact unit of the present invention.

Fig. 3d is a top view of the clamp contact unit of the present invention.

Figure 4a is a structural diagram of a battery contact unit of the present invention.

Figure 4b is a front view of the battery contact unit of the present invention.

Figure 4c is a side view of the battery contact unit of the present invention.

FIG. 4d is a top view of the battery contact unit of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Refer to the attached picture:

Embodiment 1 An aging detector according to the present invention includes an aging box 1 for performing aging tests on a lithium battery charging and discharging fixture, an aging test power supply for providing a test current to the batteries in the aging box, and an aging test power source for controlling the entire battery. The aging detection unit of the aging process, the aging test power supply and the aging detection unit are installed in the aging box, and the power supply end of the aging test power supply is electrically connected with the transmission end of the aging box, and the signal transmission port of the aging detection unit is connected with the aging box. The signal transmission port signal connection;

The aging box 1 includes a box body 11 and a charging and discharging unit 12 disposed in the box. The charging and discharging unit 12 includes a lift adjustment mechanism 121, a clamp contact unit 122 and a battery contact unit 123. The lift adjustment mechanism 121 includes a bottom plate 1211, a lifting plate 1212, a guide column 1213, a lifting cylinder 1214 and a first guide rail assembly 1215, the bottom plate 1211 is horizontally laid in the box body 11 of the aging box 1, and the lower part of the guide column 1213 is fixed to the bottom plate 1211; The lift plate 1212 is slidably installed on the upper part of the guide column 1213, the middle of the lift plate 1212 is provided with a hollow hole for installing the clamp contact unit 13, and the opposite sides of the lift plate 1212 are paved with a first guide rail for installing the tab assembly. Component 1215; the lift cylinder 1214 is vertically suspended at the bottom of the lift plate 1212, and the telescopic end of the lift cylinder 1214 is fixed to the bottom plate 1211, so that the lift plate 1212 is driven vertically by the lift cylinder 1214 along the guide column 1213;

The fixture contact unit 122 includes a test platform 1221, a fixture contact piece 1222 for contacting the fixture, a tab assembly 1223 for signal connection with the aging detection unit, and a first horizontal driving cylinder 1224 for driving the test level to move horizontally. The opposite ends of the test platform 1221 are each equipped with a tab assembly 1223, and the bottom of the tab assembly 1223 is slidably connected to the first guide rail assembly 1215 on the same side of the lifting plate 1212; the first horizontal drive cylinder 1224 is installed On the lift plate 1212, the telescopic end of the first horizontal driving cylinder 1224 is connected to the rear of the test platform 1221, so that the test platform 1221 can slide along the first guide rail assembly 1215 driven by the first horizontal driving cylinder 1224; the test platform Several sets of fixture contacts 1222 are arranged on the surface of the 1221 for contacting with the fixture of the battery contact unit, and the power transmission end of the fixture contact 1222 is electrically connected to the power supply end of the aging test power supply, and the signal transmission port of the fixture contact 1222 is connected with the tab assembly 1223 The first signal transmission end of the tab assembly 1223 is electrically connected, and the second signal transmission end of the tab assembly 1223 is signally connected to the signal transmission port of the aging detection unit;

The battery contact unit 123 includes a clamp plate 1231, a clamp 1232 disposed on the clamp plate, a second horizontal driving cylinder 1233 for driving the clamp plate to move horizontally back and forth, a clamp plate support assembly 1234 for supporting the clamp plate, and a second horizontal drive cylinder 1233. The guide rail assembly 1235, the fixture board 1231 is laid on the test area between the bottom plate 1211 and the lifting board 1212 through the fixture board support component 1234, and the fixture board 1231 is slidably connected to the fixture board support component 1234 through the second guide rail component 1235; the The surface of the clamp plate 1231 facing the clamp contact unit 122 is arranged with a plurality of sets of clamps 1232 that can be connected to the clamp contacts one by one, and the connection ports of the clamps 1232 are in contact with the connection ports of the mounting holes of the clamp plate 1231, so that the clamps 1232 is electrically connected to the power supply end of the aging test power supply and the signal connection end of the aging detection unit through the corresponding connection port on the fixture plate 1231; the second horizontal driving cylinder 1233 is installed on the bottom plate 1211, and the second The telescopic end of the horizontal driving cylinder 1233 is connected with the clamp plate 1231 for driving the clamp plate 1231 to move horizontally along the axial direction of the second guide rail assembly 1235 to adjust the position of the clamp 1232;

The aging test power supply is arranged in the aging box, and the power supply end of the test power supply is electrically connected to the power transmission end of the fixture contact unit 122;

The aging detection unit includes a charge and discharge processor and a signal acquisition unit, wherein the charge and discharge controller is arranged in the aging box, and the control end of the charge and discharge processor is electrically connected to the control port of the fixture contact unit; signal acquisition The unit is arranged in the test area of the aging box, and the signal output ends of the signal acquisition unit are respectively electrically connected with the signal input ends of the charge and discharge processor.

The fixture plate 1231 is provided with mounting holes for installing fixtures, and each mounting hole is provided with a connection port for electrical connection with the charging and discharging test device, the test power supply and the test control device; the fixture is installed on the fixture plate and faces the detection The end face of the unit, and the connection port of the fixture is in contact with the connection port of the mounting hole, so that the fixture is connected to the power supply end of the test power supply, the control end of the charge and discharge processor and the corresponding connection port on the fixture board. Test the control device electrical connections.

The signal acquisition unit includes a pressure sensor, a temperature sensor and a voltmeter, the pressure sensor is arranged between the test platform and the lower bottom plate, the signal output end of the pressure sensor and the signal input end of the charge and discharge processor The electrical connection is used to collect the pressure on the test platform to reflect the elastic force information of the fixture; the temperature sensor is arranged on the fixture board or the test platform, and the signal output end of the temperature sensor is connected to the signal of the charge and discharge processor. The input end is electrically connected to collect temperature information in the capacity space; the voltmeter is arranged in the installation area of the rack, and the connection end of the voltmeter is electrically connected with the corresponding connection end on the fixture board, and the Used to measure the contact resistance of the fixture.

A temperature controller is also added in the aging box, and the control end of the temperature controller is electrically connected with the control end of the charge and discharge processor for adjusting the temperature of the test area.

The test power supply is a constant current power supply.

The second guide rail assembly 1235 is axially parallel to the first guide rail assembly 1215, and the second guide rail assembly 1235 has the same structure as the first guide rail assembly 1215, including a horizontally laid guide rail and a slider that can move horizontally along the axial direction of the guide rail, wherein The guide rail is laid on the lifting plate or the fixture plate support assembly, the bottom of the slider is slidingly matched with the guide rail, and the upper part of the slider is fixedly connected with the test platform or the fixture plate, so that the test platform or the fixture plate can be driven by the corresponding slider along the corresponding edge. slide rails.

Embodiment 2 utilizes the aging test method of a kind of aging detector described in embodiment 1, comprising the following steps:

1) Mount the jig on the jig plate:

Select the matching fixture board according to the fixture model, and electrically connect the test end, power transmission end and control end of the fixture to the corresponding voltmeter, test power supply and charge and discharge processor through the corresponding connection ports on the fixture board;

2) Install the fixture plate on the fixture plate support assembly:

The fixture board is installed in the test tooling mechanism, and the connection ports connected with the test end, the transmission end and the control end of the fixture are respectively electrically connected with the corresponding voltmeter, test power supply and charge and discharge processor, so as to realize the fixture, the voltmeter, the test The electrical connection of the power supply and the charge and discharge processor;

3) Determination of fixture life, contact resistance, elastic force and temperature rise at different temperatures:

Drive the cylinder to shrink, so that the battery tab plate is lowered, and the fixture is in contact with the battery tab. The fixture is tested according to the aging process on the charge and discharge processor, and the fixture is tested according to the aging process on the charge and discharge processor. Test room temperature separately Fixture life, contact resistance, elastic force, temperature rise under state and high temperature state, and transmit the test results to the charge and discharge processor;

4) Discharge:

After the test is completed, the lifting plate rises under the driving of the lifting cylinder, the clamp is disengaged from the battery tab, and the clamp is taken out to complete the test.

The content described in the embodiments of the present specification is only an enumeration of the realization forms of the inventive concept, and the protection scope of the present invention should not be regarded as limited to the specific forms stated in the embodiments, and the protection scope of the present invention also includes those skilled in the art Equivalent technical means conceivable according to the inventive concept.

Claims (7)

1. an aging detector, it is characterized in that: comprise the aging box that is used to carry out the aging test to the lithium battery charging and discharging fixture, the aging test power supply for providing the test current to the battery in the aging box and the aging test power for controlling the whole aging process. An aging detection unit, the aging test power supply and the aging detection unit are installed in the aging box, and the power supply end of the aging test power supply is electrically connected with the power transmission end of the aging box, and the signal transmission port of the aging detection unit is connected with the signal transmission of the aging box port signal connection; The aging box includes a box body and a charging and discharging unit arranged in the box. The charging and discharging unit includes a lifting adjustment mechanism, a clamp contact unit and a battery contact unit. The lifting adjustment mechanism includes a bottom plate, a lifting plate, a guide column, a lifting A cylinder and a first guide rail, the bottom plate is horizontally laid in the box of the aging box, the lower part of the guide column is fixedly connected to the bottom plate; the lifting plate is slidably installed on the upper part of the guide column, and the middle part of the lifting plate is provided with a contact unit for installing a clamp A first guide rail for installing the pole lug assembly is paved on the opposite sides of the lifting plate; the lifting cylinder is vertically suspended at the bottom of the lifting plate, and the telescopic end of the lifting cylinder is fixed to the bottom plate, so that The lift plate is vertically lifted and lowered along the guide column under the drive of the lift cylinder; The fixture contact unit includes a test platform, a fixture contact piece for contacting the fixture, a tab assembly for signal connection with the aging detection unit, and a first horizontal driving cylinder for driving the test level to move horizontally, the test platform The opposite ends are each equipped with a pole lug assembly, and the bottom of the pole lug assembly is slidably connected to the first guide rail on the same side of the lifting plate; the first horizontal driving cylinder is installed on the lifting plate, wherein the first horizontal driving cylinder The telescopic end is connected to the rear of the test platform, so that the test platform can slide along the first guide rail assembly driven by the first horizontal driving cylinder; the surface of the test platform is provided with several sets of clamp contact pieces for contacting the clamp of the battery contact unit, and The power transmission end of the fixture contact is electrically connected to the power supply end of the aging test power supply, the signal transmission port of the fixture contact is electrically connected to the first signal transmission end of the tab assembly, and the second signal transmission end of the tab assembly is electrically connected to the aging detection unit The signal transmission port signal connection; The battery contact unit includes a clamp plate, a clamp disposed on the clamp plate, a second horizontal driving cylinder for driving the clamp plate to move horizontally back and forth, a clamp plate support assembly for supporting the clamp plate, and a second guide rail assembly, the The fixture board is laid on the test area between the bottom plate and the lifting board through the fixture board support assembly, and the fixture board is slidably connected to the fixture board support component through the second guide rail component; the surface of the fixture board facing the fixture contact unit is arranged with multiple sets that can be connected with the fixture contact unit. The fixture contacts are in contact with the connected fixtures, and the connection port of the fixture is in contact with the connection port of the mounting hole on the fixture board, so that the fixture is connected to the power supply end of the aging test power supply through the corresponding connection port on the fixture board, The signal connection end of the aging detection unit is electrically connected; the second horizontal driving cylinder is installed on the bottom plate, and the telescopic end of the second horizontal driving cylinder is connected with the fixture plate, for driving the fixture plate along the second guide rail assembly Move the axis horizontally to adjust the position of the fixture; The aging test power supply is arranged in the aging box, and the power supply end of the test power supply is electrically connected with the power transmission end of the fixture contact unit; The aging detection unit includes a charge and discharge processor and a signal acquisition unit, wherein the charge and discharge controller is arranged in the aging box, and the control end of the charge and discharge processor is electrically connected to the control port of the fixture contact unit; signal acquisition The unit is arranged in the test area of the aging box, and the signal output ends of the signal acquisition unit are respectively electrically connected with the signal input ends of the charge and discharge processor. 2 . The aging detector according to claim 1 , wherein the fixture plate is provided with mounting holes for mounting the fixture, and each mounting hole is provided with a charging and discharging test device, a test power supply and a The connection port for the electrical connection of the test control device; the fixture is installed on the end surface of the fixture board facing the detection unit, and the connection port of the fixture is in contact with the connection port of the installation hole, so that the fixture passes through the corresponding connection port on the fixture board It is electrically connected with the power supply end of the test power supply, the control end of the charge and discharge processor and the test control device. 3. The aging detector according to claim 1, wherein the signal acquisition unit comprises a pressure sensor, a temperature sensor and a voltmeter, and the pressure sensor is arranged between the test platform and the lower bottom plate, so that the The signal output end of the pressure sensor is electrically connected with the signal input end of the charging and discharging processor, and is used to collect the pressure on the test platform to reflect the elastic force information of the fixture; the temperature sensor is arranged on the fixture board or the test platform , the signal output end of the temperature sensor is electrically connected to the signal input end of the charge and discharge processor for collecting temperature information in the capacity space; the voltmeter is arranged in the installation area of the rack, and the The connecting end of the voltmeter is electrically connected with the corresponding connecting end on the fixture board, and is used for measuring the contact resistance of the fixture. 4 . The aging detector according to claim 1 , wherein a temperature controller is also added in the aging box, and the control end of the temperature controller and the control end of the charge and discharge processor are 4 . Electrical connection for adjusting the temperature of the test area. 5 . The aging detector according to claim 4 , wherein the test power supply is a constant current power supply. 6 . 6 . The aging detector according to claim 1 , wherein the second guide rail assembly is axially parallel to the first guide rail assembly, and the second guide rail assembly has the same structure as the first guide rail assembly, including horizontal laying. 7 . The guide rail and the slider that can move horizontally along the axial direction of the guide rail, wherein the guide rail is laid on the lifting plate or the fixture plate support assembly, the bottom of the slider is slidingly matched with the guide rail, and the upper part of the slider is fixed with the test platform or the fixture plate, so that The test platform or the fixture board can slide along the corresponding guide rail driven by the corresponding slider. 7. The aging test method that utilizes a kind of aging detector according to claim 1 to 6, comprising the following steps: 1) Mount the jig on the jig plate: Select the matching fixture board according to the fixture model, and electrically connect the test end, power transmission end and control end of the fixture to the corresponding voltmeter, test power supply and charge and discharge processor through the corresponding connection ports on the fixture board; 2) Install the fixture plate on the fixture plate support assembly: The fixture board is installed in the test tooling mechanism, and the connection ports connected with the test end, the transmission end and the control end of the fixture are respectively electrically connected with the corresponding voltmeter, test power supply and charge and discharge processor, so as to realize the fixture, the voltmeter, the test The electrical connection of the power supply and the charge and discharge processor; 3) Determination of fixture life, contact resistance, elastic force and temperature rise at different temperatures: Drive the cylinder to shrink, so that the battery tab plate is lowered, and the fixture is in contact with the battery tab. The fixture is tested according to the aging process on the charge and discharge processor, and the fixture is tested according to the aging process on the charge and discharge processor. Test room temperature separately Fixture life, contact resistance, elastic force, temperature rise under state and high temperature state, and transmit the test results to the charge and discharge processor; 4) Discharge: After the test is completed, the lifting plate is driven up by the lifting cylinder, the clamp is disengaged from the battery tab, and the clamp is taken out to complete the test.

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