CN212301805U - Battery module testing arrangement - Google Patents

Abstract

The invention has provided a battery module testing device and method, the testing device of the battery module includes testing part and support part, the said testing part is connected with part of the said support, the said support part includes the air cylinder, first joint plate, second joint plate and stander, the said air cylinder includes body part and piston part, the said stander includes fixed support and lower compression bar, the said lower compression bar is connected with said fixed support activity, the said testing part includes test board, test probe and measuring instrument, the invention can in the assembly process of the battery module, finish the test of the battery module, detect the problem in advance, prevent the phenomenon that the module detects the problem after uniting, has reduced the manufacturing cost of the battery module; the test probe of multiple type in large quantity can be accomplished the test to a plurality of electric cores simultaneously, especially can replace people's eye test electric core's electrode state, when improving efficiency of software testing, has reduced the misdetection risk, further improves the yields of battery module production.

Description

Battery module testing arrangement

Technical Field

The utility model relates to a power battery makes the field, especially relates to a battery module testing arrangement.

Background

The new energy automobile is widely concerned by various social circles due to the characteristics of low energy consumption, excellent environmental protection performance and the like, as the heart of the new energy automobile, the safety of a power battery is more and more important to the increasingly developed new energy industry, the power battery is usually formed by combining a plurality of battery modules, and in the whole manufacturing process of the power battery, the insulation performance of the battery modules is usually required to be tested.

The traditional insulation performance testing process flow usually only has final off-line testing, no detection means exists in the battery module assembling process, the failure of an intermediate link can be identified usually in the final detection, and once a problem exists, the whole battery module faces the scrapping risk, so that the manufacturing cost of the battery module is greatly increased; the battery module is formed by combining a plurality of single battery cores, the traditional testing device can only test the single battery cores, and when the whole battery module is tested, each battery core can only be detected one by one, so that the time consumption is long, and the efficiency is low; in the process of testing the battery module, the positive and negative electrodes of a single battery core need to be verified, and in the traditional testing process, the verification is usually performed manually, so that the efficiency is low, and misjudgment is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to prior art not enough the utility model provides a battery module testing arrangement and test method can carry out insulating nature test and positive negative pole verification to a plurality of electric cores simultaneously at the unitized in-process of battery module, can effectively improve efficiency of software testing, reduces manufacturing cost.

The utility model provides a battery module testing arrangement, a serial communication port, including test section and bracket part, the test section with bracket part connects, bracket part includes cylinder, first connecting plate, second connecting plate and frame, the cylinder includes main part and piston part, the frame includes fixed bolster and depression bar down, the depression bar down with fixed bolster swing joint, test section is including surveying test panel, test probe and measuring instrument.

Further, the main body portion is connected with the fixing bracket, and the piston portion is connected with the first connecting plate.

Further, the testing part is fixedly connected with the second connecting plate.

Furthermore, the first connecting plate and the second connecting plate are fixedly connected with the lower pressing rod.

Further, the second connecting plate is arranged below the first connecting plate.

Furthermore, a plurality of mounting holes are formed in the test board, the test probes penetrate through the mounting holes and are fixed on the test board, and the test probes are electrically connected with the measuring instrument.

Further, the test probe comprises a cell probe and a shell probe.

Further, the measuring instrument comprises a voltmeter or an insulation tester.

Furthermore, the connection mode of the test instrument and the test probe is as follows: the battery core probe and the shell probe are electrically connected with the insulation tester or the battery core probe is electrically connected with the voltmeter.

Further, the test board is made of a non-metallic material.

The utility model provides a battery module testing arrangement can accomplish the test of whole battery module in the battery module assembling process, forecast the problem that exists in the module in advance, prevent that the module from detecting the phenomenon of problem after grouping, effectively reduced battery module manufacturing cost; the test probes of multiple types and many quantities can guarantee to accomplish different types of tests to a plurality of electric cores simultaneously, especially can replace the electrode state of people's eye test electric core, when improving efficiency of software testing, has reduced the misdetection risk, further improves the yields of battery module production.

Drawings

Fig. 1 is a front view of a battery module testing apparatus.

Fig. 2 is a side view of the battery module testing apparatus.

FIG. 3 is a schematic structural diagram of an embodiment of a test board.

Fig. 4 is a schematic view illustrating a position of the battery module during a test.

Fig. 5 is a flow chart illustrating a battery module testing method.

Wherein, 1 is the test part, 11 is the test probe, 12 is the test panel, 121 is the floor test panel, 122 is the fixed orifices, 123 is the skin test panel, 13 is the test instrument, 14 is the electric core probe, 15 is the shell probe, 16 is the probe mounting hole, 161 is the electric core probe mounting hole, 162 is the shell probe mounting hole, 2 is the support part, 21 is the cylinder, 22 is first connecting plate, 23 is the second connecting plate, 24 is the frame, 25 is the main part, 26 is the piston part, 27 is the fixed bolster, 28 is the pushing rod.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, and it should be understood that the following embodiments are only for describing the present invention and are not intended to limit the present invention.

It should be understood that the terms "upper", "lower", "left", "right", and the like, if any, are used for describing a direction or a positional relationship, and are used for convenience of description of the drawings, and do not mean that some components in the technical solution must be arranged according to a specific direction or position.

As shown in fig. 1 to 4, the present invention firstly provides a battery module testing device, which comprises a testing part (1) and a bracket part (2).

The support part (2) is used for fixing the whole testing device, and provides a space and power capable of moving in the vertical direction for the testing part (1), and the support part (2) comprises an air cylinder (21), a first connecting plate (22), a second connecting plate (23) and a rack (24).

The cylinder (21) provides power for whole battery module testing arrangement, is responsible for pulling up or pushes down whole test section (1), and cylinder (21) include main part (25) and piston part (26), and main part (25) are in quiescent condition on vertical direction, pull up or push down whole test section (1) through the flexible of piston part (26).

The rack (24) comprises a fixing support (27) and a lower pressing rod (28), the lower pressing rod (28) is located below the fixing support (27), the fixing support (27) is fixedly connected with the main body portion (25) to ensure stability of the main body portion (25), and the lower pressing rod (28) is movably connected with the fixing support (27) to ensure that the lower pressing rod (28) can move along the fixing support (27).

The first connecting plate (22) is connected with the cylinder (21) and the rack (24), more specifically, a piston part (26) of the cylinder (21) is fixedly connected with the first connecting plate (22), the second connecting plate (23) is connected with the testing part (1) and the rack (23), and more specifically, a testing plate (12) of the testing part (1) is fixedly connected with the second connecting plate (23).

The utility model discloses a test device, including frame (24), push down bar (28), second connecting plate (23), first connecting plate (22) are connected with first connecting plate (22), second connecting plate (23), first connecting plate (22) transmit the motion state of piston part (26) to push down bar (28), make the motion state of push down bar (28) and the motion state of piston part (26) keep being unanimous, and then realize push down bar (28) along ascending reciprocate of vertical direction, push down bar (28) further transmit the motion state that self reciprocated along vertical direction to second connecting plate (23), and then drive whole test section (1) and reciprocate along vertical direction.

As shown in fig. 2, as a specific embodiment of the present invention, the lower pressing rod (27) is a sliding rod structure, and can slide up and down along the vertical direction, and is fixed outside the fixing support (26), the upper half of the lower pressing rod (27) is a sliding joint (28), and is connected outside the fixing support (26), and the connecting plate (22) is connected below (28) the sliding joint, so as to further increase the activity space of the lower pressing rod (27). The testing part (1) is used for carrying out related testing on the battery module to be tested and comprises a testing probe (11), a testing board (12) and a testing instrument (13).

Test probe (11) are including electric core probe (14) and shell probe (15) two kinds, electric core probe (14) are used for with electric core utmost point post direct contact, shell probe (15) are used for with battery module end plate direct contact, and then transmit electric core voltage and shell voltage to test instrument (13), test instrument (13) are including insulating tester and voltmeter, when carrying out insulating nature test, electric core probe (14) are connected with shell probe (15) and insulating tester electricity, when carrying out electric core polarity test, electric core probe (14) are connected with the voltmeter electricity.

Be provided with a plurality of probe mounting holes (16) on testing board (12) for insert test probe (11), testing board (12) can be replaced according to the battery module of difference to the cooperation various battery modules, accomplish the test, testing board (12) are made by insulating material, prevent carrying out the battery module test in-process, and test section (1) switches on monomer electricity core and leads to the damage of battery module.

As shown in FIG. 3, as an embodiment of the present invention, the testing board (12) is a rectangular insulating board with a double-layer structure, the bottom testing board (121) is fixedly connected with the second connecting board (23), three pairs of fixing holes (122) are arranged at the wide side of the bottom testing board (121), used for connecting a bottom layer test board (121) and a second connecting board (23), sixteen pairs of cell probe mounting holes (161) are arranged on a surface layer test board (123), one side of the cell probe mounting holes (161) on the surface layer test board (123) is provided with a pair of shell probe mounting holes (162), when the test probes (11) are assembled, the cell probes (14) penetrate through the bottom layer test board (121) and the surface layer test board (123) through the cell probe mounting holes (161), and the shell probes (15) penetrate through the bottom layer test board (121) and the surface layer test board (123) through the shell probe mounting holes (162).

In order to facilitate understanding of the technical solutions provided by the present invention, matching will be described below in the present invention, a method for testing a battery module includes the following four steps:

the method comprises the following steps: and assembling the test probes (11) on the test board (12) according to the series-parallel connection mode of the battery cells and the specific test type.

Step two: selecting a test instrument (13) according to the type of the test probe (11) selected in the step one, and electrically connecting the test instrument with the test probe (11).

Step three: and starting the battery module testing device, and moving the testing part (1) downwards until the testing probe (11) reaches the designated position and then keeps still.

Step four: and reading the test data displayed by the test instrument (13), and judging whether the battery module reaches the standard or not according to the test data.

In the first step, the assembly of the test probes (11) needs to further determine a fixing scheme according to the type of the battery module and the type of the test, and specifically, the assembly scheme can be divided into two test probe assembly schemes according to the test type: when carrying out insulating new test, need fix electric core probe (14) according to the electric core series-parallel connection design scheme in the battery module: in a series connection mode, each battery cell needs to correspond to one battery cell probe (14), in a parallel connection mode, a group of parallel battery cells as a whole correspond to one battery cell, and after a battery cell series-parallel connection scheme is confirmed, the battery cell probes (14) and the shell probes (15) need to be assembled at positions of a single battery cell or a single pole column and an end plate of the group of battery cells; when the cell arrangement test is carried out, a cell probe (14) is required to be assembled at the position of a pair of poles of each cell.

In the third step, the position is established by making the test probe completely contact with the part to be tested, that is, the cell probe completely abuts against the cell pole, and the test probe completely abuts against the battery module end plate.

The testing method provided by the present invention will be further described according to an embodiment of insulation testing for a battery module including eight battery cells.

As shown in fig. 4, in this embodiment, eight single cells are connected in parallel two by two to form four groups of cells, according to the electrical connection scheme of the cells, four cell probes (14) and one housing probe (15) are required to complete the insulation test of the battery module, the four cell probes (14) are respectively inserted into one cell probe mounting hole (161) of one cell in each group of cells, the housing probe (15) is inserted into the housing probe mounting hole (162), and the cell probes (14) and the housing probe (16) are connected to the insulation tester, so as to complete the assembly work of the testing part (1), the testing device is started, the cylinder (21) starts to push the testing part (1) to move towards the battery module, after the cell probes (14) contact the cell poles and the housing probe (15) contact the housing of the battery module, the cylinder (21) stops working, the test part (1) is fixed, and at the moment, test data on the insulation tester are read to finish the test.

It should be understood that the above-mentioned embodiments are only exemplary illustrations for facilitating the understanding of the technical solutions by those skilled in the art, and do not mean that the technical solutions are only one of the above-mentioned embodiments, and any technical solutions that are the same as the spirit and principle of the technical solutions are within the protection scope of the patent.

Claims (10)

1. The battery module testing device is characterized by comprising a testing part and a support part, wherein the testing part is connected with the support part, the support part comprises an air cylinder, a first connecting plate, a second connecting plate and a rack, the air cylinder comprises a main body part and a piston part, the rack comprises a fixed support and a lower pressing rod, the lower pressing rod is movably connected with the fixed support, and the testing part comprises a testing plate, a testing probe and a measuring instrument.

2. The battery module testing device according to claim 1, wherein the main body portion is connected to the fixing bracket, and the piston portion is connected to the first connection plate.

3. The battery module testing device according to claim 1, wherein the testing part is fixedly connected with the second connecting plate.

4. The battery module testing device as claimed in claim 1, wherein the first connecting plate and the second connecting plate are fixedly connected with the lower pressing rod.

5. The battery module testing device according to claim 1, wherein the second connecting plate is disposed below the first connecting plate.

6. The battery module testing device as claimed in claim 1, wherein the testing board is provided with a plurality of mounting holes, the testing probes penetrate through the mounting holes and are fixed on the testing board, and the testing probes are electrically connected with the measuring instrument.

7. The battery module testing device of claim 6, wherein the test probes comprise cell probes and housing probes.

8. The battery module testing device according to claim 7, wherein the measuring instrument comprises a voltmeter or an insulation tester.

9. The battery module testing device according to claim 8, wherein the measuring instrument is connected to the test probe in the following two ways: the battery core probe and the shell probe are electrically connected with the insulation tester or the battery core probe is electrically connected with the voltmeter.

10. The battery module testing device according to claim 1, wherein the test board is made of a non-metallic material.

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