Lithium battery performance consistency detection device

Abstract

The utility model discloses a lithium battery performance consistency detection device. The lithium battery performance consistency detection device comprises a supporting plate used for placing a battery module, a bottom plate arranged below the supporting plate, a pull rod driving the supporting plate to slide relative to the bottom plate, a lifting mechanism located above the battery module, and a probe assembly located on the lifting mechanism and used for being connected with the battery module. A battery simulation module electrical performance test process is added before a battery module online process, and abnormal batteries can be screened out before the batteries are online by using the device.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery quality detection, in particular to a lithium battery performance consistency detection device. Background Art

[0002] During the research and development, trial production, and production of battery packs, the battery packs need to be tested for electrical performance, and the batteries are screened by the battery voltage difference to eliminate batteries with abnormal electrical performance. The current testing method is to connect the semi-finished battery packs to the electrical test cabinet with communication harnesses and high-voltage harnesses for testing. However, this testing method has an obvious flaw. If the charging and discharging voltage differences are abnormal during the test, the module needs to be replaced or the battery pack needs to be repaired as a whole, resulting in a waste of manpower and material resources, which has a serious impact on the efficiency of production and delivery of products. Utility Model Content

[0003] The purpose of the utility model is to provide a method for solving the problems raised in the above-mentioned background technology, by adding a battery simulation module electrical performance test process before the battery module is put into operation, and by using this device, abnormal batteries can be screened out before the battery is put into operation.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A lithium battery performance consistency detection device includes a tray for placing a battery module, a bottom plate arranged below the tray, a pull rod for driving the tray to slide relative to the bottom plate, a lifting mechanism located above the battery module, and a probe assembly located on the lifting mechanism for connecting the battery module.

[0006] Furthermore, the lifting mechanism includes a layer plate, a guide column, and a lifting cylinder, wherein the bottom of the lifting cylinder is fixed to the bottom plate, and the top is in contact with the layer plate, and through holes are opened around the layer plate for the guide column to pass through.

[0007] Furthermore, the lifting mechanism also includes a pressing block arranged on one side of the layer plate and a floating joint arranged below the pressing block, and the floating joint abuts against the telescopic end of the lifting cylinder.

[0008] Furthermore, the probe assembly includes a box body and a probe arranged on the lower end surface of the upper cover of the box body.

[0009] Furthermore, a plurality of waist holes arranged in rows are provided on the lower end surface of the upper cover, and the probes are installed in the waist holes and correspond one by one to the poles of the battery module.

[0010] Furthermore, the upper cover is made of transparent material.

[0011] Furthermore, the lifting mechanism also includes a linear bearing guide shaft for buffering, which is arranged on both sides of the layer plate, and the top end of the linear bearing guide shaft is connected to the layer plate, and the bottom end of the linear bearing guide shaft is connected to the bottom plate.

[0012] Furthermore, a baffle is provided on the outer periphery of the bottom plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] This device can be used to test the performance consistency of battery modules before they go online, screen out abnormal batteries, avoid the need to replace modules or return the entire battery pack for repair after going online, and save manpower and material resources.

[0015] The utility model drives the probe assembly to move up and down through the lifting mechanism, and drives the battery module to enter and exit the test station through the slidable support plate, which is convenient and quick to operate; the probe position can be adjusted in time according to the different sizes of the battery module, so that the probe and the battery pole are well connected, and the utility model has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection between the box body and the layer board in the utility model;

[0018] Figure 3 This is a schematic diagram of the inner wall structure of the upper cover of the box body in the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the middle support plate and the bottom plate of the utility model;

[0020] In the figure: 1-battery module, 2-support plate, 3-bottom plate, 4-pull rod, 5-lifting mechanism, 51-layer plate, 52-guide column, 53-lifting cylinder, 54-pressing block, 55-linear bearing guide shaft, 6-probe assembly, 61-box body, 611-upper cover, 6111-waist hole, 62-probe, 7-baffle. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0023] See also Figure 1-4 A lithium battery performance consistency detection device includes a support plate 2 for placing a battery module 1, a bottom plate 3 disposed below the support plate 2, a pull rod 4 for driving the support plate 2 to slide relative to the bottom plate, a lifting mechanism 5 located above the battery module 1, and a probe assembly 6 for connecting the battery module 1 located on the lifting mechanism 5. One end of the pull rod 4 is connected to the support plate 2, and the support plate 2 can be pulled outward from the inside of the bottom plate 3 by pulling the pull rod 4, so as to facilitate the removal of the battery module 1. During measurement, the lifting mechanism 5 drives the probe assembly 6 to move downward so that the probe assembly 6 contacts the pole of the battery module 1 for measurement.

[0024] Furthermore, the lifting mechanism 5 includes a layer plate 51, a guide column 52, and a lifting cylinder 53, wherein the bottom of the lifting cylinder 53 is fixed to the bottom plate 3, and the top is abutted against the layer plate 51, and the layer plate 51 is provided with through holes around it for the guide column 52 to pass through, and the guide column 52 is connected with the guide column 52 with a clearance fit.

[0025] Furthermore, the lifting mechanism 5 also includes a pressure block 54 arranged on one side of the layer plate 51 and a floating joint arranged below the pressure block 54. The floating joint abuts against the telescopic end of the lifting cylinder 53, and the floating joint is used to reduce the eccentric parallelism of the cylinder.

[0026] Furthermore, the probe assembly 6 comprises a box body 61 and a probe 62 disposed on the lower end surface of an upper cover 611 of the box body 61. The box body 61 has a transparent viewing window for inspecting the connection between the probe 62 and the battery pole.

[0027] Furthermore, the lower end surface of the upper cover 611 of the box body is provided with a plurality of waist holes 6111 arranged in rows, and the probe 62 is installed in the waist hole 6111 and corresponds to the pole of the battery module 1 one by one. Since the size of the battery module to be tested is different and the pole position is different, the position of the probe 62 needs to be adjusted so as to facilitate good contact between the probe and the pole. The waist holes 6111 arranged equidistantly in advance are convenient for adjusting the distance to install the probe 62, and screws need to be used for fixing during installation.

[0028] Furthermore, the lifting mechanism 5 also includes a linear bearing guide shaft 55 disposed on both sides of the layer plate 51, the top end of which is connected to the layer plate 51, and the bottom end is connected to the bottom plate 3. The linear bearing guide shaft 55 plays a buffering role to prevent the probe 62 from damaging the battery module due to excessive impact when it contacts the battery module.

[0029] Furthermore, two baffles 7 arranged at right angles are provided at the upper left of the base plate 2 . When the module battery is pushed into the test station, the two side edges of the module are in contact with the baffles 7 to prevent the battery module from being tilted and affecting the contact with the probe 62 .

[0030] When the utility model is in use, after the lifting cylinder 53 is controlled to rise stably, the square aluminum shell battery module is pushed from the bottom plate 3 to the support plate 2, so that the battery module 1 is close to the baffle 7 at the upper left corner of the bottom plate 3, and it is observed from above to confirm whether the positions of the pole and the probe 62 correspond. After confirmation, the lifting cylinder 53 is controlled to descend, and the test is started after the probe 62 and the pole are in contact. After the test is completed, the lifting cylinder 53 is controlled to rise, and the pull rod 4 is pulled to move the support plate 2 outward, and then the battery module 1 can be removed.

[0031] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0032] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent changes made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A lithium battery performance consistency detection device, characterized in that: The invention comprises a support plate (2) for placing a battery module (1), a bottom plate (3) arranged below the support plate (2), a pull rod (4) for driving the support plate (2) to slide relative to the bottom plate, a lifting mechanism (5) located above the battery module (1), and a probe assembly (6) located on the lifting mechanism (5) and used for connecting the battery module (1).

2. The lithium battery performance consistency detection device according to claim 1, characterized in that: The lifting mechanism (5) comprises a layer plate (51), a guide column (52), and a lifting cylinder (53), wherein the bottom of the lifting cylinder (53) is fixedly connected to the bottom plate (3) and the top is in contact with the layer plate (51), and through holes are provided around the layer plate (51) for the guide column (52) to pass through.

3. The lithium battery performance consistency detection device according to claim 2, characterized in that: The lifting mechanism (5) further comprises a pressing block (54) arranged on one side of the layer plate (51) and a floating joint arranged below the pressing block (54), wherein the floating joint abuts against the telescopic end of the lifting cylinder (53).

4. The lithium battery performance consistency detection device according to claim 1, characterized in that: The probe assembly (6) comprises a box body (61) and a probe (62) arranged on the lower end surface of an upper cover (611) of the box body (61).

5. The lithium battery performance consistency detection device according to claim 4, characterized in that: The lower end surface of the upper cover (611) is provided with a plurality of waist holes (6111) arranged in rows, and the probes (62) are installed in the waist holes (6111) and correspond one-to-one with the poles of the battery module (1).

6. The lithium battery performance consistency detection device according to claim 4, characterized in that: The upper cover (611) is made of transparent material.

7. The lithium battery performance consistency detection device according to claim 2, characterized in that: The lifting mechanism (5) also includes a linear bearing guide shaft (55) for buffering, which is arranged on both sides of the layer plate (51), and the top end of the linear bearing guide shaft (55) is connected to the layer plate (51) and the bottom end is connected to the bottom plate (3).

8. The lithium battery performance consistency detection device according to claim 1, characterized in that: A baffle (7) is provided on the outer periphery of the bottom plate (3).

Images