CN221007809U

CN221007809U - PID test equipment for battery piece

Info

Publication number: CN221007809U
Application number: CN202322726018.7U
Authority: CN
Inventors: 谈剑豪; 孙孟麒; 陈国清; 董亮; 倪志春
Original assignee: Zhejiang Aikang Future Technology Co ltd; Zhejiang Aikang New Energy Technology Co ltd; Zhejiang Aikang Photoelectric Technology Co ltd; Jiangsu Akcome Energy Research Institute Co ltd
Current assignee: Zhejiang Aikang Future Technology Co ltd; Zhejiang Aikang New Energy Technology Co ltd; Zhejiang Aikang Photoelectric Technology Co ltd; Jiangsu Akcome Energy Research Institute Co ltd
Priority date: 2023-10-11
Filing date: 2023-10-11
Publication date: 2024-05-24
Anticipated expiration: 2033-10-11

Abstract

The application provides battery piece PID test equipment, which is characterized in that a partition plate is arranged in a machine body to divide the machine body into a first cavity and a second cavity, and a heating mechanism is used for increasing the temperature in the first cavity to provide a test temperature environment for testing battery pieces. Then the battery piece is fixed through the installation blocks on the placing plate and the rotating shaft between the installation blocks, and the battery piece is clamped through the clamping mechanism, so that the test of the battery piece is completed. According to the application, the battery piece can be rotated through the rotating shaft, so that the clamping angle of the battery piece is changed, the light receiving area of the battery piece is changed, the testing temperature of the battery piece is changed through the heating mechanism, the testing range of the battery piece is enlarged, and the testing accuracy of the battery piece is improved.

Description

PID test equipment for battery piece

Technical Field

The application relates to the technical field of PID (proportion integration differentiation) testing of battery pieces, in particular to a PID testing device of battery pieces.

Background

The PID phenomenon is a negative phenomenon of a battery assembly. PID phenomenon can make battery pack under high voltage effect for a long time, can appear leaking current between battery pack's glass, the packaging material to make a large amount of charges gather on the battery piece surface, reduce the passivation effect on battery piece surface, lead to the battery piece to produce the photo-generated carrier complex, make battery pack region design standard.

For this reason, before the battery piece leaves the factory, it is necessary to perform quality inspection of the battery piece against the PID phenomenon. The quality inspection of the battery piece can be realized by connecting the upper electrode with the positive electrode of the power supply and connecting the lower electrode with the negative electrode of the power supply, clamping the battery piece between the upper electrode and the lower electrode and performing reciprocating motion in the direction of the heating plate, thereby completing the test of the battery piece.

However, the above-described method only tests the PID phenomenon of the battery cell by changing the temperature of the heating plate, but does not consider the test effect under different humidity and different lighting conditions. The above conditions require the angle of the battery plate to be adjusted during the test. However, the device does not have the function of adjusting the angle of the battery piece, so that the PID phenomenon test of the battery piece cannot be accurately completed.

Disclosure of utility model

In order to improve the accuracy of testing the PID phenomenon of the battery piece, the application provides a battery piece PID testing device, which comprises: the battery piece to be tested comprises a machine body and a battery piece to be tested;

Wherein, a baffle plate is arranged in the machine body, the baffle plate divides the machine body into a first cavity and a second cavity, and a heating mechanism is arranged on the side wall of the first cavity;

A placing plate is arranged on the partition board, the placing plate is clamped and installed in the first cavity through at least two installation blocks, a rotating shaft is arranged between at least two installation blocks, a clamping mechanism is arranged on the placing plate, the clamping mechanism comprises a clamping piece, and the clamping piece is connected with the battery piece to be tested;

and a cooling mechanism is arranged in the second cavity.

In some possible embodiments, the cooling mechanism comprises: the device comprises a water storage tank, a water pump, a water suction pipe, a water delivery pipe and a spray head;

One end of the water suction pipe is connected with the water storage tank, the other end of the water suction pipe is connected with the water pump, one end of the water pipe is connected with the water pump, the other end of the water pipe is communicated with the first cavity, and the spray head is arranged at one end of the water pipe communicated with the first cavity.

In some possible embodiments, the placing plate is provided with a turnover mechanism, and the turnover mechanism comprises a first gear and a second gear which are meshed with each other, and the second gear is coaxially connected with the output end of the first motor;

The first gear is fixedly connected with a first end face, and the first end face is the end face, close to the first motor, of the rotating shaft.

In some possible embodiments, a support plate is disposed at the bottom of the placement plate, and the support plate and the battery piece to be tested form a clamping connection and fixing.

In some possible embodiments, the clamping mechanism further includes a screw, the placement plate is provided with a sliding groove, the screw is installed in the sliding groove on the placement plate in a first direction, the clamping piece is installed on the placement plate in a second direction, and the first direction is perpendicular to the second direction.

In some possible embodiments, the clamping mechanism further comprises a second motor, an output end of the second motor is coaxially connected with the screw rod, and one end of the screw rod, which is far away from the second motor, is rotationally connected with the inner wall of the chute.

In some possible embodiments, the placing plate is further provided with a sliding block, the sliding block is in sliding connection with the sliding groove, the sliding block is provided with a threaded hole matched with the screw rod, and the sliding block is fixedly connected with the clamping piece.

In some possible embodiments, the device further comprises a controller, a humidity sensor and a temperature sensor, wherein the temperature sensor and the humidity sensor are arranged on the inner wall of the first cavity, the controller is arranged on the outer wall of the machine body, and the controller is respectively electrically connected with the temperature sensor and the humidity sensor.

In some possible embodiments, an illumination lamp is disposed at the top of the first cavity, and the illumination lamp is electrically connected with the controller.

In some possible embodiments, a plurality of supporting feet are arranged at the bottom of the machine body, one end of each supporting foot is fixedly connected with the bottom of the machine body, and the other end of each supporting foot is in contact with the ground.

According to the technical scheme, the battery piece PID test equipment provided by the application has the advantages that the machine body is divided into the first cavity and the second cavity by arranging the partition board in the machine body, and the temperature in the first cavity is increased by the heating mechanism, so that a temperature environment is provided for testing the battery piece. Then the battery piece is fixed through the installation blocks on the placing plate and the rotating shaft between the installation blocks, and the battery piece is clamped through the clamping mechanism, so that the test of the battery piece is completed. According to the application, the battery piece can be rotated through the rotating shaft, so that the clamping angle of the battery piece is changed, the light receiving area of the battery piece is changed, the testing temperature of the battery piece is changed through the heating mechanism, the testing range of the battery piece is enlarged, and the testing accuracy of the battery piece is improved.

Drawings

In order to more clearly illustrate the technical solution of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is an isometric view of a battery piece PID test device according to an embodiment of the application;

Fig. 2 is a front view of a battery piece PID test apparatus according to an embodiment of the present application;

Fig. 3 is a schematic structural diagram of a turnover mechanism according to an embodiment of the present application.

Illustration of: the device comprises a 1-machine body, a 2-lighting lamp, a 3-placing plate, a 4-mounting block, a 5-rotating shaft, a 6-first motor, a 7-first gear, an 8-second gear, a 9-second motor, a 10-lead screw, an 11-clamping piece, a 12-battery piece to be tested, a 13-heating mechanism, a 14-water storage tank, a 15-water pump, a 16-water pumping pipe, a 17-water delivery pipe, an 18-spray head and 19-supporting feet.

Detailed Description

For the purposes of making the objects and embodiments of the present application more apparent, an exemplary embodiment of the present application will be described in detail below with reference to the accompanying drawings in which exemplary embodiments of the present application are illustrated, it being apparent that the exemplary embodiments described are only some, but not all, of the embodiments of the present application.

It should be noted that the brief description of the terminology in the present application is for the purpose of facilitating understanding of the embodiments described below only and is not intended to limit the embodiments of the present application. Unless otherwise indicated, these terms should be construed in their ordinary and customary meaning.

The terms first, second, third and the like in the description and in the claims and in the above-described figures are used for distinguishing between similar or similar objects or entities and not necessarily for describing a particular sequential or chronological order, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.

The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.

The battery is an important energy storage component, the battery can convert chemical energy in the battery into electric energy for power generation, in order to realize power generation, the battery comprises a cell element, the cell element can generate PID phenomenon under the action of high voltage for a long time, and the PID phenomenon is a negative phenomenon of a battery assembly. The PID phenomenon can cause leakage current to occur between the glass and the packaging material of the battery component, so that a large amount of charges are accumulated on the surface of the battery piece, the passivation effect of the surface of the battery piece is reduced, the battery piece generates photo-generated carrier recombination, and the regional design standard of the battery component is realized.

In order to improve accuracy of a PID phenomenon of a battery piece, as shown in fig. 1 and 2, the application provides battery piece PID testing equipment, which comprises a machine body 1 and a battery piece 12 to be tested, wherein the battery piece 12 to be tested needs to be heated in the process of testing the battery piece 12 to be tested, and the battery piece to be tested is cooled after the test is completed. For this purpose, a partition board is disposed in the machine body 1, and the partition board divides the machine body 1 into a first cavity and a second cavity, wherein the first cavity and the second cavity can be disposed up and down, and can also be disposed left and right.

In some embodiments, the battery to be tested may be tested in the first cavity, in order to facilitate adjusting the temperature in the first cavity, a heating mechanism 13 may be disposed on a side wall of the first cavity, the heating mechanism 13 may be a heating resistance wire, and the temperature of the heating mechanism 13 may be adjusted by increasing or decreasing the current on the heating resistance wire, so as to adjust the test temperature of the battery to be tested 12.

In order to place the battery piece 12 to be tested in the first cavity, a placement plate 3 may be disposed on the partition plate, at least two mounting blocks 4 are disposed on two sides of the placement plate 3, and the placement plate 3 may be restricted from moving by the mounting blocks 4, so that the placement plate 3 is fixed on the partition plate. Between at least two of the mounting blocks 4, a rotation shaft 5 may be provided so as to facilitate adjustment of the test angle of the battery piece 12 to be tested.

In order to clamp the battery piece 12 to be detected, a clamping mechanism is arranged on the placing plate 3, a clamping piece 11 is arranged on the clamping mechanism, the clamping piece 11 is matched and fixed with the battery piece 12 to be detected, and the battery piece 12 to be detected can be clamped on the placing plate 3 through the clamping piece 11.

After the test of the battery piece 12 to be tested is completed, in order to dissipate the temperature of the first cavity, a cooling mechanism may be disposed in the second cavity, where the cooling mechanism may include a water storage tank 14, a water pump 15, a water pumping pipe 16, a water pipe 17 and a spray head 18, a liquid for cooling may be injected into the water storage tank 14, and the water storage tank 14 and the water pump 15 are connected through the water pumping pipe 16 so that the water pump 15 may pump the cooling liquid from the water storage tank 14.

In order to cool down through the cooling liquid in the water storage tank 14, the water pump 15 can provide power for the water suction pipe 16 to extract the cooling liquid and convey the cooling liquid to the first cavity through the water conveying pipe 17, wherein the head end of the water suction pipe 16 is connected with the water storage tank 14, the tail end of the water suction pipe 16 is connected with the water pump 15, the head end of the water conveying pipe 17 is connected with the water pump 15 to convey the cooling liquid in the water suction pipe 16, the tail end of the water conveying pipe 17 is communicated with the first cavity, and the spray head 18 is arranged at the tail end of the water conveying pipe 17 to convert the extracted water flow into water mist to cool down the first cavity.

In some embodiments, as shown in fig. 3, the placing plate 3 is provided with a turnover mechanism, the turnover mechanism includes a first gear 7 and a second gear 8 meshed with each other, in order to drive the first gear 7 and the second gear 8, so as to turn over the angle of the battery piece 12 to be tested, the turnover mechanism further includes a first motor 6, an output end of the first motor 6 is coaxially connected with the second gear 8, and a section of the first gear 7 and the rotating shaft 5, which is close to the first motor 6, is coaxially and fixedly connected. When the first motor 6 rotates positively, the second gear 8 rotates clockwise and drives the first gear 7 to rotate in the same direction, and the first gear 7 drives the rotating shaft 5 to rotate so as to drive the battery piece 12 to be tested to overturn. When the first motor 6 rotates reversely, the second gear 8 rotates anticlockwise, meanwhile, the first gear 7 is driven to rotate in the same direction, and the first gear 7 drives the rotating shaft 5 to rotate so as to drive the battery piece 12 to be tested to overturn.

In some embodiments, in order to reinforce the to-be-tested battery piece 12, a chute may be formed on the placement plate 3, a support plate is disposed at the bottom of the placement plate 3, and the support plate may support the to-be-tested battery piece 12, and the support plate and the to-be-tested battery piece 12 form a clamping connection and fixing.

In some embodiments, the clamping mechanism on the placement plate 3 may further include a screw 10, and the screw 10 may be mounted in a first direction in a chute formed in the placement plate 3, so as to move the battery piece 12 to be tested in the first direction. In order to prevent the battery piece 12 to be tested from sliding out during the moving process, the clamping piece 11 may be mounted on the placement plate 3 in a second direction, and the first direction is perpendicular to the second direction, so as to prevent the battery piece 12 to be tested from sliding out of the clamping piece 11 during the moving process of the battery piece 12 to be tested in the first direction.

In some embodiments, the clamping mechanism may further include a second motor 9, an output end of the second motor 9 may be coaxially connected to the lead screw 10, one end of the lead screw 10 away from the second motor 9 is rotationally connected to an inner wall of the chute, and the second motor 9 may rotate to drive the lead screw 10 to rotate, so as to change a placement angle of the battery piece 12 to be tested.

In some embodiments, the placing plate 3 may further be provided with a plurality of sliding blocks, the sliding blocks may form sliding connection with the sliding grooves, the sliding blocks may be provided with threaded holes adapted to the screw rod 10, and two sides of the screw rod 10 are fixed with the sliding blocks through the threaded holes. The side surface of the sliding block is fixedly connected with the clamping piece 11.

In some embodiments, the apparatus may further include a controller, a humidity sensor, and a temperature sensor, wherein the temperature sensor and the humidity sensor may be disposed on an inner wall of the first cavity, the temperature sensor may obtain a temperature inside the first cavity, and the humidity sensor may obtain a humidity inside the first cavity, thereby facilitating a tester to adjust the tested parameter.

A controller may be provided on the outer wall of the first cavity, the controller may be electrically connected to the temperature and humidity sensors to obtain temperature and humidity from the temperature and humidity sensors, and in some embodiments, the controller may also be connected to the water pump 15, the first motor 6 and the second motor 9 to control the operation of the water pump 15, the first motor 6 and the second motor 9.

In some embodiments, the top of the first cavity may further be provided with an illumination lamp 2, and the illumination lamp 2 may be electrically connected to the controller so as to provide illumination conditions for the battery piece to be tested.

In some embodiments, the bottom of the machine body 1 is provided with a plurality of supporting feet 19, one end of the supporting feet 19 is fixedly connected with the bottom of the machine body 1, and the other end of the supporting feet 19 is in contact with the ground to support the battery piece PID test equipment.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; the foregoing description, for purposes of explanation, has been presented in conjunction with specific embodiments. The illustrative discussions above are not intended to be exhaustive or to limit the embodiments to the precise forms disclosed above. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the present disclosure and to enable others skilled in the art to best utilize the embodiments.

Claims

1. A battery cell PID test apparatus, comprising: a machine body (1) and a battery piece (12) to be tested;

Wherein a partition board is arranged in the machine body (1), a first cavity and a second cavity are formed in the machine body (1) by the partition board, and a heating mechanism (13) is arranged on the side wall of the first cavity;

A placing plate (3) is arranged on the partition plate, the placing plate (3) is installed in the first cavity through clamping of at least two installation blocks (4), a rotating shaft (5) is arranged between at least two installation blocks (4), a clamping mechanism is arranged on the placing plate (3), the clamping mechanism comprises a clamping piece (11), and the clamping piece (11) is connected with a battery piece (12) to be tested;

and a cooling mechanism is arranged in the second cavity.

2. The battery cell PID test apparatus according to claim 1, characterized in that the cooling mechanism comprises: a water storage tank (14), a water pump (15), a water suction pipe (16), a water delivery pipe (17) and a spray head (18);

One end of the water suction pipe (16) is connected with the water storage tank (14), the other end of the water suction pipe (16) is connected with the water pump (15), one end of the water pipe (17) is connected with the water pump (15), the other end of the water pipe (17) is communicated with the first cavity, and the spray head (18) is arranged at one end of the water pipe (17) communicated with the first cavity.

3. The battery piece PID test equipment according to claim 1, wherein the placement plate (3) is provided with a turnover mechanism, the turnover mechanism comprises a first gear (7) and a second gear (8) which are meshed with each other, and the second gear (8) is coaxially connected with the output end of the first motor (6);

The first gear (7) is fixedly connected with a first end face, and the first end face is the end face, close to the first motor (6), of the rotating shaft (5).

4. The battery piece PID test equipment according to claim 1, characterized in that the bottom of the placement plate (3) is provided with a support plate, which is fastened and fixed with the battery piece (12) to be tested.

5. The battery piece PID test equipment according to claim 4, wherein the clamping mechanism further comprises a screw rod (10), the placing plate (3) is provided with a sliding groove, the screw rod (10) is installed in the sliding groove on the placing plate (3) in a first direction, the clamping piece (11) is installed on the placing plate (3) in a second direction, and the first direction is perpendicular to the second direction.

6. The battery piece PID test equipment according to claim 5, wherein the clamping mechanism further comprises a second motor (9), an output end of the second motor (9) is coaxially connected with the screw rod (10), and one end of the screw rod (10) away from the second motor (9) is rotatably connected with the inner wall of the chute.

7. The battery piece PID test equipment according to claim 6, wherein the placing plate (3) is further provided with a sliding block, the sliding block is in sliding connection with the sliding groove, the sliding block is provided with a threaded hole matched with the screw rod (10), and the sliding block is fixedly connected with the clamping piece (11).

8. The battery cell PID test apparatus according to claim 7, further comprising a controller, a humidity sensor and a temperature sensor, the temperature sensor and the humidity sensor being disposed on an inner wall of the first cavity, the controller being disposed on an outer wall of the machine body (1), the controller being electrically connected to the temperature sensor and the humidity sensor, respectively.

9. The battery piece PID test equipment according to claim 8, wherein an illuminating lamp (2) is arranged at the top of the first cavity, and the illuminating lamp (2) is electrically connected with the controller.

10. The battery piece PID test equipment according to claim 1, wherein a plurality of supporting feet (19) are arranged at the bottom of the machine body (1), one end of each supporting foot (19) is fixedly connected with the bottom of the machine body (1), and the other end of each supporting foot (19) is in contact with the ground.