Charge and discharge detection device for power battery module

Abstract

The utility model discloses a power battery module charging and discharging detection device, which comprises a base, a mounting plate, a first detection device and a plurality of second detection devices, and is characterized in that the base is provided with a test station, and the test station is used for placing a battery module; the mounting plate is arranged on the base and is positioned above the test station; the first detection device is movably mounted on the mounting plate in the vertical direction, and the first detection device is used for moving downwards to abut against the positive electrode and the negative electrode of the battery module; the second detection devices are arranged on the mounting plate at intervals in the first direction, each second detection device is movably arranged in the vertical direction, and the second detection devices are used for moving downwards to abut against the positive electrode and the negative electrode of a single battery cell. By arranging the first detection device and the plurality of second detection devices, not only can a single battery cell be tested, but also the whole battery module can be tested.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery testing, and in particular to a power battery module charge and discharge detection device. Background Art

[0002] With the rapid development of new energy vehicles, power batteries, as the power source of new energy vehicles, have also developed rapidly. During the production process of power batteries, the performance indicators of the cells that make up the power batteries are controlled and realized through various precision equipment. The DCR test tests the DC internal resistance of the cell. By measuring the high-power charge and discharge of the cell, the internal resistance data of the cell is collected to determine whether the established performance indicators are met.

[0003] Patent CN114839441A discloses a DCR test device, comprising: a frame; a feeding mechanism, which is provided with an escape space and is mounted in the frame; a lifting mechanism, which is arranged in the escape space; a testing mechanism, which is mounted above the feeding mechanism; and a code scanning mechanism, which is mounted in the frame and is used to scan the label information of the battery cell. The tray and the battery cell are transported to a predetermined position above the escape space of the feeding mechanism and are located below the testing mechanism. During the test, the testing mechanism does not move, and the lifting mechanism drives the tray and the battery cell to move upward and connect with the testing mechanism.

[0004] However, the above-mentioned prior art can only detect a single battery cell, but cannot detect the entire battery module. Utility Model Content

[0005] The purpose of the utility model is to overcome the above technical deficiencies and to provide a power battery module charge and discharge detection device to solve the technical problem that the prior art can only detect a single battery cell but cannot detect the entire battery module.

[0006] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a power battery module charge and discharge detection device, comprising:

[0008] A base is provided with a test station, wherein the test station is used to place a battery module;

[0009] A mounting plate, disposed on the base and located above the testing station;

[0010] A first detection device, movably mounted on the mounting plate along a vertical direction, the first detection device being used to move downward to abut against the positive and negative electrodes of the battery module; and

[0011] A plurality of second detection devices are arranged on the mounting plate at intervals along the first direction, each of the second detection devices is movably arranged along the vertical direction, and the second detection devices are used to move downward to abut against the positive and negative electrodes of a single battery cell.

[0012] In some embodiments, the first detection device includes two first detection components, the two first detection components are arranged on the mounting plate at intervals along the first direction, each first detection component is movably arranged along the vertical direction, and the two first detection components are used to abut against the positive and negative poles of the battery module, respectively.

[0013] In some embodiments, the first detection component includes a first connecting seat, a first probe and a first driving component, the first connecting seat is installed on the mounting plate, the first probe is movably installed on the connecting seat along the vertical direction, the driving end of the first driving component is connected to the first probe, and the first probe is used to abut against the positive or negative pole of the battery module.

[0014] In some embodiments, the first connection seat is movably disposed on the mounting plate along a first direction so that the distance between the two first probes can be adjusted.

[0015] In some embodiments, a plurality of the second detection devices are located between two of the first detection components.

[0016] In some embodiments, the power battery module charge and discharge detection device further includes a second drive component, and the second drive component is connected to a plurality of the second detection devices to drive the plurality of the second detection devices to move synchronously.

[0017] In some embodiments, the second driving assembly includes a second connecting seat and a driving cylinder, the second connecting seat is movably mounted on the mounting plate in a vertical direction, a plurality of the second detection devices are arranged on the second connecting seat, the driving cylinder is arranged on the mounting plate, and a push rod of the driving cylinder extends downward and is connected to the second connecting seat.

[0018] In some embodiments, the second detection device includes two second probes, which are arranged on the second connecting seat at intervals along the second direction, and the two second probes are used to abut the positive and negative electrodes of the battery cell respectively, and the first direction and the second direction are arranged perpendicular to each other.

[0019] In some embodiments, the two second probes are movably arranged along the second direction, so that the distance between the two second probes is adjustable.

[0020] In some embodiments, the second detection device is movably disposed on the second connecting seat along the first direction, so that the distance between two adjacent second detection devices can be adjusted.

[0021] Compared with the prior art, the power battery module charge and discharge detection device provided by the utility model has the mounting plate arranged on the base and located above the test station; the first detection device is movably mounted on the mounting plate in the vertical direction, and a plurality of the second detection devices are arranged on the mounting plate at intervals along the first direction, and each of the second detection devices is movably arranged in the vertical direction, the first detection device is used to test the entire battery module, and the second detection device is used to test a single battery cell. When used, the entire battery module is placed on the test station, and a plurality of the second detection devices correspond to a plurality of battery cells one by one. The plurality of the second detection devices move downward so that the second detection devices contact the positive and negative electrodes of the battery cells, thereby testing the battery cells. After the test of a single battery cell is completed, the second detection device moves upward to return to the initial position, and then the first detection device moves downward to contact the positive and negative electrodes of the entire battery module, thereby testing the entire battery module. By setting the first detection device and a plurality of the second detection devices, not only a single battery cell can be tested, but also the entire battery module can be tested.

[0022] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the preferred embodiment of the utility model is described in detail as follows with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an embodiment of a power battery module charge and discharge detection device provided by the utility model;

[0024] Figure 2 yes Figure 1 The front view of the power battery module charge and discharge detection device;

[0025] Figure 3 yes Figure 1 A three-dimensional schematic diagram of a first detection device and a second detection device;

[0026] Figure 4 yes Figure 1 A front view of the first detection device and the second detection device;

[0027] Figure 5 yes Figure 1 A top view of the first detection device and the second detection device;

[0028] Figure 6yes Figure 1 A three-dimensional schematic diagram of the first detection device and the second detection device from another perspective;

[0029] Figure 7 yes Figure 1 A three-dimensional schematic diagram of the second connection base and the second probe;

[0030] Figure 8 yes Figure 1 A top view of the second connection base and the second probe.

[0031] Description of reference numerals:

[0032] 1- base, 11- test station;

[0033] 2-mounting plate, 21-first elongated hole;

[0034] 3-first detection device, 31-first detection assembly, 311-first connection seat, 312-first probe 313-first driving assembly;

[0035] 4-second detection device, 41-second probe, 42-nut;

[0036] 5-second driving assembly, 51-second connecting seat, 511-connecting frame, 512-connecting plate, 5121-second elongated hole, 513-screw rod, 52-driving cylinder. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0038] In order to solve the technical problem in the prior art that only a single battery cell can be detected but the entire battery module cannot be detected, the utility model provides a power battery module charge and discharge detection device, which can test not only a single battery cell but also the entire battery module by setting the first detection device and multiple second detection devices.

[0039] See also Figure 1 , Figure 1 It is a structural schematic diagram of a power battery module charge and discharge detection device in one embodiment of the utility model.

[0040] The utility model provides a power battery module charge and discharge detection device, including a base 1, a mounting plate 2, a first detection device 3 and a plurality of second detection devices 4, wherein the base 1 is provided with a test station 11, and the test station 11 is used to place a battery module; the mounting plate 2 is arranged on the base 1 and is located above the test station 11; the first detection device 3 is movably installed on the mounting plate 2 along a vertical direction, and the first detection device 3 is used to move downward to abut against the positive and negative electrodes of the battery module; a plurality of second detection devices 4 are arranged on the mounting plate 2 at intervals along a first direction, and each of the second detection devices 4 is movably arranged along a vertical direction, and the second detection device 4 is used to move downward to abut against the positive and negative electrodes of a single battery cell.

[0041] In this example, see Figure 1 to Figure 2 , the mounting plate 2 is arranged on the base 1 and is located above the test station 11; the first detection device 3 is movably installed on the mounting plate 2 along the vertical direction, and multiple second detection devices 4 are arranged on the mounting plate 2 at intervals along the first direction, and each second detection device 4 is movably arranged along the vertical direction. The first detection device 3 is used to test the entire battery module, and the second detection device 4 is used to test a single battery cell. When used, the entire battery module is placed on the test station 11, and multiple second detection devices 4 correspond to multiple battery cells one by one. Multiple second detection devices 4 move downward so that the second detection devices 4 contact the positive and negative electrodes of the battery cells, thereby testing the battery cells. After the test of a single battery cell is completed, the second detection device 4 moves upward to return to the initial position, and then the first detection device 3 moves downward to contact the positive and negative electrodes of the entire battery module to test the entire battery module. By setting the first detection device 3 and multiple second detection devices 4, not only a single battery cell can be tested, but also the entire battery module can be tested.

[0042] In one embodiment, see Figures 3 to 5 The first detection device 3 includes two first detection components 31, and the two first detection components 31 are arranged on the mounting plate 2 at intervals along the first direction. Each first detection component 31 is movably arranged along the vertical direction, and the two first detection components 31 are used to abut against the positive and negative electrodes of the battery module respectively.

[0043] In this embodiment, since the positive and negative electrodes of the battery module are located at opposite ends of the battery module, in order to be able to abut against the positive and negative electrodes of the battery module, the first detection device 3 is provided with two first detection components 31, and the two first detection components 31 correspond to the positive and negative electrodes of the battery module respectively. When testing, the two first detection components 31 move downward at the same time to abut against the positive and negative electrodes, completing the electrical connection with the battery module, and the battery module can be tested.

[0044] It should be noted that the first detection device 3 also includes a first tester, which is electrically connected to the two first detection components 31. The first tester is electrically connected to the battery module through the two first detection components 31, so as to perform testing and output results. The first tester is a prior art and will not be described in detail here.

[0045] In one embodiment, see Figures 3 to 5 The first detection component 31 includes a first connecting seat 311, a first probe 312 and a first driving component 313. The first connecting seat 311 is installed on the mounting plate 2. The first probe 312 is movably installed on the connecting seat along the vertical direction. The driving end of the first driving component 313 is connected to the first probe 312. The first probe 312 is used to abut against the positive or negative pole of the battery module.

[0046] In this embodiment, the mounting plate 2 is provided with two through holes, and the two through holes are arranged at intervals along the first direction. The two connecting seats correspond to the two through holes one by one, and the two sides of the connecting seats are overlapped on the opposite sides of the through holes. The first driving component 313 is arranged in the middle of the first connecting seat 311, and the first driving component 313 has a driving part that moves along the vertical direction. The first probe 312 is installed on the driving part, and the first probe 312 is driven to move by the first driving component 313.

[0047] In this embodiment, the first driving component 313 includes a slide cylinder, which has a slide that moves in a vertical direction, and the slide constitutes the driving part. The first detection component 31 also includes a connecting plate 512, one end of the connecting plate 512 is installed on the slide, and the probe is installed on the other end of the connecting plate 512.

[0048] In one embodiment, see Figures 3 to 5 The first connection seat 311 is movably disposed on the mounting plate 2 along a first direction so that the distance between the two first probes 312 can be adjusted.

[0049] In this embodiment, since different battery modules have different lengths, the distances between the positive and negative electrodes are also different. In order to adapt to different battery modules, the first connection seat 311 is movably arranged along the first direction, so as to adjust the spacing between the two first probes 312 to adapt to different battery modules. Specifically, the mounting plate 2 is provided with two first elongated holes 21, the first elongated holes 21 are extended along the first direction, and the two first elongated holes 21 are located on the opposite sides of the through hole along the second direction, the first connection seat 311 is provided with two first through holes, the two first through holes are located at the opposite ends of the first connection seat 311, and the two first through holes correspond to the two first elongated holes 21, the first detection component 31 also includes two first screw connectors, the first screw connectors are passed through the first through holes and the first elongated holes 21, so as to fix the first connection seat 311 to the mounting plate 2, so that the position of the connection seat along the first direction can be adjusted, so as to achieve the purpose of adjusting the position of the first probe 312.

[0050] In one embodiment, see Figure 4 , multiple second detection devices 4 are located between two first detection components 31.

[0051] In one embodiment, see Figure 3 , Figure 4 and Figure 6 The power battery module charge and discharge detection device also includes a second drive component 5, and the second drive component 5 is connected to multiple second detection devices 4 and is used to drive multiple second detection devices 4 to move synchronously.

[0052] In this embodiment, when testing a single battery, multiple cells can be tested simultaneously, so the second driving component 5 can drive multiple second detection devices 4 to move synchronously, thereby reducing the number of drivers and reducing costs.

[0053] In one embodiment, see Figure 4 The second driving assembly 5 includes a second connecting seat 51 and a driving cylinder 52. The second connecting seat 51 is movably mounted on the mounting plate 2 along the vertical direction. A plurality of second detection devices 4 are arranged on the second connecting seat 51. The driving cylinder 52 is arranged on the mounting plate 2. The push rod of the driving cylinder 52 extends downward and is connected to the second connecting seat 51.

[0054] In this embodiment, the second connecting seat 51 is slidably installed in the vertical direction under the mounting plate 2 through a guide rod, the driving cylinder 52 is installed on the mounting plate 2, and the push rod of the driving cylinder 52 is vertically extended downward, the push rod of the driving cylinder 52 is connected to the second connecting seat 51, thereby driving the second connecting seat 51 to move, and multiple second detection devices 4 are arranged on the second connecting seat 51, thereby achieving the purpose of driving multiple second detection devices 4 to move synchronously.

[0055] In one embodiment, see Figures 6 to 8 The second detection device 4 includes two second probes 41, which are arranged on the second connecting seat 51 at intervals along the second direction. The two second probes 41 are used to abut the positive and negative electrodes of the battery cell respectively, and the first direction and the second direction are arranged perpendicular to each other.

[0056] It should be noted that the second detection device 4 also includes a second tester, which is electrically connected to the two second probes 41. The second tester is electrically connected to the battery cell through the two second probes 41 to perform testing and output results. The second tester is a prior art and will not be described in detail here.

[0057] In this embodiment, in the battery module, multiple battery cells are arranged side by side along the first direction, and the positive and negative poles of the battery cells are arranged at intervals along the second direction. Therefore, two second probes 41 are arranged at intervals along the second direction on the second connecting seat 51, corresponding to the positive and negative poles of the battery cells. When the second connecting seat 51 moves vertically downward, it can smoothly connect with the positive and negative poles of the battery cells.

[0058] In one embodiment, see Figures 6 to 8 The two second probes 41 are movably arranged along the second direction so that the distance between the two second probes 41 can be adjusted.

[0059] In this embodiment, the second connecting seat 51 includes a seat body, two connecting frames 511 and two connecting plates 512. The seat body is movably installed under the mounting plate 2. The two connecting frames 511 are respectively located on the opposite sides of the seat body along the second direction. The two connecting plates 512 correspond to the two connecting frames 511 one by one. Each connecting plate 512 is slidably installed in the connecting frame 511 along the second direction. The two second probes 41 in each second detection device 4 are respectively installed on the two connecting plates 512, so that the distance between the two second probes 41 in each second detection device 4 can be adjusted through the two movably arranged connecting plates 512 to adapt to battery cells of different sizes.

[0060] In this embodiment, the connecting plate 512 is provided with a threaded hole along the second direction, and the second connecting seat 51 also includes two screw rods 513, the two screw rods 513 correspond to the two threaded holes one by one, and the screw rods 513 are rotatably installed on the connecting frame 511 along the axis in the second direction, and the screw rods 513 are threadedly connected to the connecting plate 512 so as to drive the connecting plate 512 to move by rotating the screw rods 513.

[0061] In one embodiment, see Figures 6 to 8 The second detection device 4 is movably disposed on the second connecting seat 51 along the first direction, so that the distance between two adjacent second detection devices 4 can be adjusted.

[0062] In this embodiment, since different battery cells have different thicknesses, in order to be able to test battery cells of different thicknesses, the second detection device 4 can be movably arranged along the first direction, so that the spacing between the two detection devices can be adjusted to adapt to battery cells of different thicknesses. Specifically, the connecting plate 512 is penetrated by a second elongated hole 5121 extending along the first direction, the outer periphery of the second probe 41 is provided with an external thread, and the second probe 41 is penetrated by the second elongated hole 5121. The second detection device 4 also includes two nuts 42, both of which are threadedly connected to the second probe 41, and the two nuts 42 are arranged at intervals in the vertical direction, and the two nuts 42 are respectively abutted against the upper side and the lower side of the connecting plate 512, so as to achieve the purpose of fixing the second probe 41. By setting the second elongated hole 5121, the second probe 41 can be moved along the first direction, and by setting the two nuts 42, the second probe 41 can be locked on the connecting plate 512. In this way, the second detection device 4 can be adapted to battery cells of different thicknesses.

[0063] In order to better understand the present invention, the following Figures 1 to 8 The technical solution of the utility model is described in detail:

[0064] During specific use, the entire battery module is placed on the testing station 11, and multiple second detection devices 4 correspond to multiple battery cells one by one. Multiple second detection devices 4 move downward so that the second detection device 4 contacts the positive and negative electrodes of the battery cells, thereby testing the battery cells. After the test of a single battery cell is completed, the second detection device 4 moves upward back to the initial position, and then the first detection device 3 moves downward to contact the positive and negative electrodes of the entire battery module to test the entire battery module. By setting the first detection device 3 and multiple second detection devices 4, not only a single battery cell can be tested, but also the entire battery module can be tested.

[0065] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A power battery module charge and discharge detection device, characterized in that: It includes: A base is provided with a test station, wherein the test station is used to place a battery module; A mounting plate, disposed on the base and located above the testing station; A first detection device is movably mounted on the mounting plate along a vertical direction, and the first detection device is used to move downward to abut against the positive and negative electrodes of the battery module; as well as A plurality of second detection devices are arranged on the mounting plate at intervals along the first direction, each of the second detection devices is movably arranged along the vertical direction, and the second detection devices are used to move downward to abut against the positive and negative electrodes of a single battery cell.

2. The power battery module charge and discharge detection device according to claim 1, characterized in that: The first detection device includes two first detection components, which are arranged on the mounting plate at intervals along the first direction, and each first detection component is movably arranged along the vertical direction. The two first detection components are used to abut against the positive and negative electrodes of the battery module respectively.

3. The power battery module charge and discharge detection device according to claim 2, characterized in that: The first detection component includes a first connecting seat, a first probe and a first driving component. The first connecting seat is installed on the mounting plate. The first probe is movably installed on the connecting seat along the vertical direction. The driving end of the first driving component is connected to the first probe. The first probe is used to abut against the positive or negative pole of the battery module.

4. The power battery module charge and discharge detection device according to claim 3, characterized in that: The first connection seat is movably arranged on the mounting plate along a first direction, so that the distance between the two first probes can be adjusted.

5. The power battery module charge and discharge detection device according to claim 2, characterized in that: A plurality of the second detection devices are located between two of the first detection components.

6. The power battery module charge and discharge detection device according to claim 1, characterized in that: The power battery module charge and discharge detection device also includes a second drive component, which is connected to a plurality of the second detection devices and is used to drive the plurality of the second detection devices to move synchronously.

7. The power battery module charge and discharge detection device according to claim 6, characterized in that: The second driving assembly includes a second connecting seat and a driving cylinder. The second connecting seat is movably mounted on the mounting plate along the vertical direction. A plurality of the second detection devices are arranged on the second connecting seat. The driving cylinder is arranged on the mounting plate. The push rod of the driving cylinder extends downward and is connected to the second connecting seat.

8. The power battery module charge and discharge detection device according to claim 7, characterized in that: The second detection device includes two second probes, which are arranged at intervals on the second connection seat along a second direction, and are used to abut against the positive electrode and the negative electrode of the battery cell respectively. The first direction and the second direction are arranged perpendicular to each other.

9. The power battery module charge and discharge detection device according to claim 8, characterized in that: The two second probes are movably arranged along the second direction so that the distance between the two second probes can be adjusted.

10. The power battery module charge and discharge detection device according to claim 9, characterized in that: The second detection device is movably disposed on the second connection seat along the first direction, so that the distance between two adjacent second detection devices can be adjusted.

Images