CN219737718U

CN219737718U - Battery module safety regulation testing mechanism

Info

Publication number: CN219737718U
Application number: CN202321023015.0U
Authority: CN
Inventors: 杨国微
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2023-09-22
Anticipated expiration: 2033-04-28

Abstract

The utility model provides a battery module safety regulation testing mechanism. The utility model relates to a motherboard of a battery module safety test mechanism, a main control board card connected with the motherboard, a test unit connected with the main control board card, and a test board card with a first connecting piece and a second connecting piece, wherein the test board card is detachably connected with the motherboard through the first connecting piece, and the test board card is connected with a part to be tested of the battery module through the second connecting piece. According to the safety regulation testing mechanism for the battery module, the wiring harness of the mechanism is reduced, so that the occurrence of problems of a circuit is reduced, and the testing efficiency is improved.

Description

Battery module safety regulation testing mechanism

Technical Field

The utility model relates to the technical field of battery module testing, in particular to a battery module safety regulation testing mechanism.

Background

Along with the development of society, the demand of electric vehicles is also increasing, and people are also higher to the attention of lithium ion battery among the electric vehicles, and the battery need carry out safety regulation test to the module in the in-process of assembling into the battery package, and current safety regulation test mechanism pencil redundancy design is complicated, and work efficiency has been difficult to satisfy modern production's demand.

The existing module safety regulation test mode mainly comprises the following modes: the testing mechanism adopts a main control high-voltage relay board, a relay high-voltage relay board, a probe card and the like, wherein the testing equipment is outgoing to the main control high-voltage relay board, the main control high-voltage relay board is outgoing again to the relay high-voltage relay board, the relay high-voltage relay board is outgoing to a probe corresponding to the probe card, and finally the testing equipment is connected with the battery module through the probe. The wire harness is redundant in the mode, the layout is complex, and circuit breakage is very easy to occur during testing, so that the testing efficiency is affected.

Disclosure of Invention

In view of the above, the present utility model is directed to a battery module safety inspection mechanism, which reduces the occurrence of problems in the circuit and improves the inspection efficiency by reducing the wire harness of the mechanism.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

the battery module safety regulation testing mechanism comprises a motherboard, a main control board card connected with the motherboard, a testing unit connected with the main control board card, and a testing board card with a first connecting piece and a second connecting piece;

the test board card is detachably connected with the motherboard through the first connecting piece, and is connected with a part to be tested of the battery module through the second connecting piece.

Further, the first connector and the second connector are probes.

Further, a clamping plate is arranged on the motherboard, and a clamping groove clamped with the test board is formed in the clamping plate.

Further, the battery module safety regulation testing mechanism further comprises power supply equipment and control equipment;

the motherboard is provided with a power supply loop, a signal loop and a test loop;

the power supply loop is connected with the power supply equipment, the signal loop is connected with the control equipment, and the test loop is connected with the test unit.

Further, the main control board card and the test board card are respectively provided with a dial connected with the control equipment, and the motherboard is provided with a plurality of test board cards.

Further, a plurality of conductive copper strips are arranged on the motherboard side by side, and the conductive copper strips are formed into the power supply loop, the signal loop and the test loop.

Further, the test unit comprises at least one of an insulation voltage resistance tester and an internal resistance tester;

the insulation voltage withstanding instrument and the internal resistance tester are connected with the test loop of the motherboard through the main control board card.

Further, the main control board is provided with a first chip, and a first test branch is formed on the first chip;

the first chip is connected with the signal loop, the first chip is connected with the power supply loop, and the insulation voltage withstanding instrument and the internal resistance tester are connected with the test loop through the first test branch.

Further, the test board card comprises a high-voltage switching card, wherein the high-voltage switching card is provided with a second chip;

the second chip is provided with a second test branch, the high-voltage switching card is connected with the test loop of the motherboard through the first connecting piece, and the high-voltage switching card is connected with the anode and the cathode of the battery module through the second connecting piece;

the second chip is connected with the signal loop and the power supply loop of the motherboard.

Further, the test board card further comprises a shell-to-shell switching card, wherein the shell-to-shell switching card is provided with a third chip;

the third chip is provided with a third test branch, the shell-to-shell switching card is connected with the test loop of the motherboard through the first connecting piece, and the shell-to-shell switching card is connected with the shell of the battery module through the second connecting piece;

the third chip is connected with the signal loop and the power supply loop of the motherboard.

Compared with the prior art, the utility model has the following advantages:

in the lithium ion battery module safety regulation testing mechanism, the testing board card is respectively connected with the mother board and the part to be tested of the battery module through the first connecting piece and the second connecting piece, so that wire harness connection between the testing board card and the mother board and between the testing board card and the second probe is avoided, circuit breaking caused by external reasons is avoided, and testing efficiency is improved.

Secondly, set up the cardboard on the template, after test board card and mother board are connected, test board card can with the draw-in groove joint of cardboard to improve test board card and mother board's joint strength, reduce test board card and mother board break away from the risk of contact.

Furthermore, a plurality of test boards can be connected to the motherboard, and a plurality of battery cells of the battery module are tested simultaneously, so that the test efficiency is improved, and the master control board and the test boards are provided with a dial device connected with the control equipment, so that the control equipment can accurately control the master control board and each test board through the dial device.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model, wherein the words of front and back, top and bottom, etc. are used to indicate relative position and are not intended to limit the utility model unduly. In the drawings:

fig. 1 is a schematic structural view of a safety regulation testing mechanism for a battery module according to the present utility model;

FIG. 2 is a schematic diagram of the operation of the motherboard, the main control board card and the test unit of the battery module safety regulation test mechanism of the utility model;

FIG. 3 is a schematic diagram of the operation of the motherboard and the high voltage switching card of the battery module safety testing mechanism of the present utility model;

fig. 4 is a schematic diagram of the operation of the motherboard and the shell-to-shell switching card of the battery module safety testing mechanism of the present utility model;

FIG. 5 is a schematic diagram of the structure of the clamping groove on the clamping plate of the safety regulation testing mechanism of the battery module;

reference numerals illustrate:

1. a motherboard; 2. a main control board card; 3. a first connector; 4. a second connector; 5. a clamping plate; 6. a clamping groove; 7. a power supply device; 8. a control device; 9. a power supply loop; 10. a signal loop; 11. a test loop; 12. a dial; 13. a conductive copper bar; 14. an insulation voltage withstanding instrument; 15. an internal resistance tester; 16. a first test branch; 17. a second test branch; 18. a third test branch; 19. a high voltage switching card; 20 pairs of shell switching cards; 21. and testing the board card.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that, if terms indicating an azimuth or a positional relationship such as "upper", "lower", "inner", "back", etc., are presented, they are based on the azimuth or the positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model; if the terms "first," "second," etc. are used herein, they are used for descriptive purposes only and not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

The embodiment relates to a battery module safety regulation testing mechanism, which reduces the wiring harness of the mechanism to reduce the occurrence of problems of a circuit and improve the testing efficiency; an exemplary configuration of which is shown in fig. 1-5.

In general, the battery module safety regulation testing mechanism comprises a motherboard 1, a main control board 2 connected with the motherboard 1, a testing unit connected with the main control board 2, and a testing board 21 with a first connecting piece 3 and a second connecting piece 4; the test board card 21 is detachably connected with the motherboard 1 through the first connecting piece 3, and the test board card 21 is connected with a part to be tested of the battery module through the second connecting piece 4. The wiring harness connection between the test board card 21 and the motherboard 1 and between the test board card 21 and the second connecting piece 4 can be omitted, the risk of failure of the test board card 21 can be reduced, and therefore the test efficiency is ensured.

Specifically, the motherboard 1 is made of an insulating material, and a plurality of conductive copper bars 13 arranged side by side are provided on the motherboard 1, and specifically, the power supply circuit 9, the signal circuit 10 and the test circuit 11 can be formed by eight conductive copper bars 13. And have the recess on every conductive copper bar 13, first connecting piece 3 can peg graft with the recess, guarantees good conductivity between first connecting piece 3 and the conductive copper bar 13 to improve the connection effect of first connecting piece 3 and conductive copper bar 13.

Meanwhile, a plurality of test boards 21 can be connected to the motherboard 1, the test boards 21 are connected to the conductive copper strips 13 of the motherboard 1 side by side, and a dial 12 is arranged on the main control board 2 and each test board 21, the dial 12 is formed on a first chip, a second chip and a third chip, the dial 12 can number the main control board 2 and each test board 21, and the control equipment 8 can precisely control the main control board 2 and each test board 21 through the signal loop 10.

In addition, the first connector 3 and the second connector 4 are preferably probes, which can be well contacted with the conductive copper bar 13 on the motherboard 1 and the metal piece on the battery cell of the battery module.

In addition, set up cardboard 5 on motherboard 1 to cardboard 5 is last have with the draw-in groove 6 of test board card 21 joint, after being connected test board card 21 with motherboard 1 through first connecting piece 3, test board card 21 can imbed in draw-in groove 6, with draw-in groove 6 joint, in order to promote the connection effect to test board card 21. Wherein, cardboard 5 and motherboard 1 fixed connection, draw-in groove 6 are offered on cardboard 5 to draw-in groove 6 is preferably a plurality of, and a plurality of draw-in grooves 6 set up side by side, and the quantity of a plurality of draw-in grooves 6 is the same with the quantity that can connect a plurality of test board cards 21 on motherboard 1.

In this embodiment, the battery module safety regulation testing mechanism further includes a power supply device 7 and a control device 8; the motherboard 1 has a power supply circuit 9, a signal circuit 10 and a test circuit 11; the power supply circuit 9 is connected with the power supply device 7, the signal circuit 10 is connected with the control device 8, and the test circuit 11 is connected with the test unit. The power supply device 7 provides power for the power supply loop 9, preferably a power supply line on a production line, and the control device 8 is preferably a computer, and can be communicated with the signal loop 10 through a signal line, and control the main control board card 2 and the test board card 21 through the signal loop 10.

In addition, the test unit includes at least one of the insulation and voltage withstanding instrument 14 and the internal resistance tester 15, and the test unit may include both the insulation and voltage withstanding instrument 14 and the internal resistance tester 15, and both the insulation and voltage withstanding instrument 14 and the internal resistance tester 15 are connected with the test loop 11 of the motherboard 1 through the main control board card 2. Of course, the test unit may be only the insulation voltage tester 14, or only the internal resistance tester 15. The type of the insulation voltage withstanding instrument 14 can be chroma19073, and the type of the internal resistance tester 15 can be BT3563.

It should be noted that, eight conductive copper strips 13, two of which are positive and negative poles of the power supply circuit 9, two of which are positive and negative poles of the signal circuit 10, the test circuit 11 is four-wire, and two of the remaining four are positive poles of the test circuit 11, and two of which are negative poles of the test circuit 11.

The main control board card 2 is provided with a first chip, and a first test branch 16 is formed on the first chip; the first chip is connected with the signal loop 10, namely the control device 8 can control the on/off of the first test branch 16 on the first chip through the signal loop 10, the first chip is connected with the power supply loop 9, namely the power supply device 7 can supply power to the first chip through the power supply loop 9, the insulation voltage withstanding instrument 14 and the internal resistance tester 15 are connected with the test loop 11 through the first test branch 16, the insulation voltage withstanding instrument 14 and the internal resistance tester 15 can be led to be led out to the first test branch 16 on the first chip, and the main control board card 2 can be plugged in the conductive copper strip 13 of the mother card through a probe. Preferably, the first test branch 16 is divided into four branches, two branches are positive, two branches are negative, two positive branches are connected with two positive poles of the test loop 11, two negative branches are connected with two negative poles of the test loop 11, the positive pole of the insulation voltage withstand meter 14 and the positive pole of the internal resistance tester 15 are respectively connected with the two positive branches, and the negative pole of the edge voltage withstand meter and the negative pole of the internal resistance tester 15 are respectively connected with the two negative branches.

Furthermore, two kinds of test boards 21, one of which is a high-voltage switch card 19, can be connected to the motherboard 1, and the high-voltage switch card 19 has a second chip; the second chip is provided with a second test branch 17, the first connecting piece 3 and the second connecting piece 4 are respectively arranged at the input end and the output end of the second test branch 17, the high-voltage switching card 19 is connected with the test loop 11 of the motherboard 1 through the first connecting piece 3, and the high-voltage switching card 19 is connected with the anode and the cathode of the battery module through the second connecting piece 4; the second chip is connected with the signal loop 10 and the power supply loop 9 of the motherboard 1, that is, the power supply device 7 can supply power to the second chip through the power supply loop 9, and the control device 8 can control the on/off of the second test branch 17 on the second chip through the signal loop 10. The second test branch 17 has six branches, two of which are positive branches and four of which are negative branches, one end of each of the two positive branches is connected with the positive pole of the test circuit 11, the other end of each of the two positive branches is connected with the positive pole of the battery module, two of the four negative branches are connected with the positive pole of the test circuit 11, two of the two negative branches are connected with the negative pole of the test circuit 11, and all of the four negative branches are connected with the negative pole of the battery module.

Secondly, the second is a shell-to-shell switching card 20, and the shell-to-shell switching card 20 is provided with a third chip; a third test branch 18 is formed on the third chip, the first connecting piece 3 and the second connecting piece 4 are respectively arranged at the output end and the output end of the third test branch 18, the shell-to-shell switching card 20 is connected with the test loop 11 of the motherboard 1 through the first connecting piece 3, and the shell-to-shell switching card 20 is connected with the shell of the battery module through the second connecting piece 4; the third chip is connected with the signal loop 10 and the power supply loop 9 of the motherboard 1, that is, the power supply device 7 can supply power to the third chip through the power supply loop 9, and the control device 8 can control the on/off of the third test branch 18 on the third chip through the signal loop 10. The third test branch 18 has two branches, wherein both branches are negative, one end of the negative branch is connected with the negative pole of the test circuit 11, and the other end is connected with the housing.

It should be noted that the first chip, the second chip and the third chip each have a function of switching on/off the respective branches, which can be controlled by the control device 8, and each branch corresponds to one of the first connecting member 3 and the second connecting member 4.

The dial 12 is R7H3-16, and the main control board 2, the high voltage switch card 19, and the shell switch card 20 are all circuit boards, and the first chip, the second chip, and the third chip are all integrated with a power supply of the type of the exposed weft LRS-50-12, the power supply is connected with the power supply loop 9, each branch is integrated with a dry spring relay of the type of the SIP-1a12, the switch/close of each branch is controlled by the dry spring relay, and the dial 12 is respectively integrated on the first chip of the main control board 2, the second chip of the high voltage switch card 19, and the third chip of the shell switch card 20 to realize the functions.

The use process of the battery module safety regulation testing mechanism of this embodiment is as follows:

first, a plurality of test boards 21 are inserted into the conductive copper bars 13 of the motherboard 1, and the test boards 21 are held by the card boards 5. At the time of testing, the main control board card 2 and the test board card 21 are identified by the dialer 12.

When the shell of the battery module is tested, the second connecting piece 4 of the two positive pole branches of the high-voltage switching card 19 is contacted with the positive pole of the battery module, the second connecting piece 4 of the two negative pole branches is contacted with the negative pole of the battery module, the two negative pole branches of the third testing branch 18 on the shell switching card 20 are contacted with the shell, the control equipment 8 is used for controlling the two positive pole branches of the first testing branch 16 on the main control board card 2 through the signal loop 10, the positive pole of the insulated voltage withstand meter 14 is connected to the positive pole of the testing loop 11 of the motherboard 1, the two positive pole branches of the second testing branch 17 of the high-voltage switching card 19 are closed, so that the positive pole of the battery module is communicated with the positive pole of the testing loop 11, then the two negative pole branches of the third testing branch 18 are closed, the negative pole of the insulated meter 14 is communicated with the negative pole of the testing loop 11, the positive pole of the insulated meter 14 is finished, after the testing of the positive pole of the shell of the insulated meter 14 is finished, all the positive pole branches of the insulated meter 14 are connected to the positive pole branches 11, the two positive pole branches of the two negative pole branches of the main control board 2 are closed, the two positive pole branches of the two negative pole branches of the insulated voltage withstand meter are connected to the two negative pole branches of the second testing branch 14 are closed, and the two negative pole branches of the voltage withstand meter 14 are connected to the positive pole of the two voltage withstand voltage test branches are closed, and the two voltage withstand voltage test branches are connected to the positive pole of the test circuit 11, and the positive pole of the test circuit are connected.

When testing the voltage and internal resistance of the battery module, the probes of the two positive branch circuits of the high-voltage switching card 19 are connected with the positive electrode of the battery module, the probes of the two negative branch circuits are connected with the negative electrode of the battery module, the two positive branch circuits and the two negative branch circuits of the first test branch circuit 16 are closed firstly, so that the positive electrode and the negative electrode of the internal resistance tester 15 are connected to the positive electrode and the negative electrode of the test loop 11, and the two positive branch circuits and the two negative branch circuits connected with the negative electrode of the test loop 11 are closed, so that the voltage and the internal resistance of the battery module can be read through the internal resistance tester 15.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A battery module safety regulation testing mechanism is characterized in that:

the device comprises a motherboard, a main control board card connected with the motherboard, a test unit connected with the main control board card, and a test board card with a first connecting piece and a second connecting piece;

2. The battery module safety regulation testing mechanism according to claim 1, wherein:

the first connecting piece and the second connecting piece are probes.

3. The battery module safety regulation testing mechanism according to claim 1, wherein:

the motherboard is provided with a clamping plate, and the clamping plate is provided with a clamping groove which is clamped with the test board.

4. The battery module safety regulation testing mechanism according to any one of claims 1 to 3, wherein:

the battery module safety regulation testing mechanism further comprises power supply equipment and control equipment;

5. The battery module safety regulation testing mechanism according to claim 4, wherein:

the master control board card and the test board card are respectively provided with a dial connected with the control equipment, and the motherboard is provided with a plurality of test board cards.

6. The battery module safety regulation testing mechanism according to claim 4, wherein:

the motherboard is provided with a plurality of conductive copper strips arranged side by side, and the conductive copper strips are formed into the power supply loop, the signal loop and the test loop.

7. The battery module safety regulation testing mechanism according to claim 4, wherein:

the test unit comprises at least one of an insulation voltage withstanding instrument and an internal resistance tester;

8. The battery module safety regulation testing mechanism of claim 7, wherein:

the main control board card is provided with a first chip, and a first test branch is formed on the first chip;

9. The battery module safety regulation testing mechanism according to claim 7 or 8, wherein:

the test board card comprises a high-voltage switching card, and the high-voltage switching card is provided with a second chip;

10. The battery module safety regulation testing mechanism according to claim 9, wherein:

the test board card further comprises a shell-to-shell switching card, and the shell-to-shell switching card is provided with a third chip;