A battery cell testing device

Abstract

The utility model provides a battery cell testing device, comprising: a frame, on which a lower pressure plate support is provided; a pressurizing mechanism, which is installed on the frame and arranged above the lower pressure plate support and is used to pressurize the battery cell; a lower pressure plate, which is used to place the battery cell; a transmission mechanism, which is arranged below the lower pressure plate support and is used to drive the lower pressure plate to move horizontally relative to the lower pressure plate support so as to facilitate a manipulator to pick up and discharge materials from the lower pressure plate; a lifting mechanism, a fixed end of which is arranged on the transmission mechanism, and the lower pressure plate is arranged on its output end; when the transmission mechanism drives the lower pressure plate to move, the lifting mechanism lifts up the lower pressure plate to place the lower pressure plate on the lower pressure plate support or remove the lower pressure plate from the lower pressure plate support, at which time the pressurizing mechanism applies pressure to the battery cell on the lower pressure plate for a pressurization test, and the pressure will be transmitted from the lower pressure plate to the frame, and the pressure does not act on the transmission mechanism, so the device can withstand a maximum pressure between 500 and 20000 kgf.

Description

Technical Field

[0001] The utility model relates to the field of battery core detection, in particular to a battery core testing device. Background Art

[0002] During the production process of lithium batteries, the electrodes are stacked into cells and then subjected to high pressure (500~

[0003] 20000Kgf) pressure test; In the prior art, such as the battery cell charge and discharge test tooling provided by Chinese patent CN220188676U, the upper pressure plate and the lower support platform are integrated. When it is used, the material needs to be taken and discharged by a manipulator, and the battery cell is placed on the lower support platform;

[0004] However, the upper pressure plate in this structure not only has a large opening stroke and a long time consumption, but also has the risk of colliding with the robot. In order to avoid the above problems, the prior art adopts a design structure in which the lower support platform is separated from the upper pressure plate and the lower support platform is transmitted on the slide rail. However, when the lower support platform of this structure is tested, the pressure applied by the upper pressure plate is transmitted to the slide rail through the lower support platform. Since the slide rail usually adopts a linear motion, its structural strength and stability are relatively low, and it is difficult to withstand large pressure, and cannot meet customer testing requirements. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the utility model provides a battery cell testing device that is convenient for a manipulator to take and place materials and can withstand high pressure;

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A battery cell testing device, comprising:

[0008] A frame, on which a lower pressure plate support is provided;

[0009] A pressurizing mechanism, which is mounted on the frame and disposed above the lower pressing plate support, and is used to pressurize the battery cell;

[0010] Lower pressure plate, used for placing battery cells;

[0011] A transmission mechanism, which is disposed below the lower pressing plate support member and is used to drive the lower pressing plate to move laterally relative to the lower pressing plate support member;

[0012] A lifting mechanism, wherein a fixed end thereof is arranged on the transmission mechanism, and the lower pressure plate is arranged on the output end thereof; when the transmission mechanism drives the lower pressure plate to move, the lifting mechanism drives the lower pressure plate to lift up, so as to place the lower pressure plate on the lower pressure plate support or remove the lower pressure plate from the lower pressure plate support.

[0013] In the battery cell testing device as described above, the lower pressure plate support member includes a left support member and a right support member, and the transmission mechanism is disposed between the left support member and the right support member.

[0014] In the battery cell testing device as described above, the distance from the left support member to the right support member is d, and the length of the lower pressing plate is D; D and d satisfy: D>d.

[0015] In the battery cell testing device as described above, the left support member includes a left support seat for placing one end of the lower pressing plate and a left support group arranged below the left support seat, and the left support group is used to provide a support point for the left support seat to support the lower pressing plate;

[0016] The right support member includes a right support seat for placing the other end of the lower pressing plate and a right support group arranged below the right support seat, and the right support group is used to provide a support point for the right support seat to support the lower pressing plate.

[0017] The battery cell testing device as described above, wherein the frame further comprises a base;

[0018] One end of the left support group away from the left support seat and one end of the right support group away from the right support seat are commonly connected to a basic base, and the basic base is used to balance the stress between the left support group and the right support group.

[0019] In the battery cell testing device as described above, the transfer point where the lower pressure plate transfers force to the left support seat is located above the left support group; the transfer point where the lower pressure plate transfers force to the right support seat is located above the right support group.

[0020] The battery cell testing device as described above, the frame further comprises a guide rod arranged perpendicular to the lower pressing plate support member, and one end of the guide rod away from the lower pressing plate support member is connected to a fixing plate;

[0021] The pressurizing mechanism includes a driving member and an upper pressing plate arranged at the output end of the driving member; the driving member is arranged on the fixed plate, the output end of the driving member passes through the fixed plate and is connected to the upper pressing plate, and the driving member drives the upper pressing plate to slide along the guide rod to pressurize the battery cell.

[0022] In the battery cell testing device as described above, the guide rod is arranged on a side of the lower pressure plate support away from the transmission mechanism.

[0023] In the battery cell testing device as described above, the transmission mechanism includes a guide rail and a sliding member slidably disposed on the guide rail, and the lifting mechanism is disposed on the sliding member.

[0024] In the battery cell testing device as described above, the length of the guide rail is greater than the width of the frame, and a first station A and a second station B are respectively provided at both ends of the guide rail and on both sides of the frame, and the guide rail provides a stroke for the sliding member to drive the lifting mechanism to slide to the first station A and the second station B.

[0025] The beneficial effects of the utility model are:

[0026] The transmission mechanism is used to drive the lower pressure plate to move horizontally relative to the lower pressure plate support so that the robot can pick up and place materials from the lower pressure plate; and when the transmission mechanism drives the lower pressure plate to move, the lifting mechanism drives the lower pressure plate to lift up to place the lower pressure plate on the lower pressure plate support. At this time, the pressure mechanism applies pressure to the battery cells on the lower pressure plate for a pressure test. The pressure will be transmitted from the lower pressure plate to the frame, and the pressure does not act on the transmission mechanism. Therefore, the device can withstand a maximum pressure between 500 and 20000 kgf. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 It is a front view of the utility model;

[0029] Figure 2 It is a three-dimensional diagram of the utility model;

[0030] Figure 3 It is a top view of the utility model;

[0031] Figure 4 This is one of the state diagrams of the partial frame and the lower pressure plate of the utility model;

[0032] Figure 5 This is the second state diagram of the partial frame and the lower pressure plate of the utility model. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0034] Reference Figure 1-2 , a battery cell testing device, comprising:

[0035] A frame 1, on which a lower pressing plate support 1-1 is provided;

[0036] A pressurizing mechanism 2, which is mounted on the frame 1 and disposed above the lower pressing plate support 1-1, and is used to pressurize the battery cell;

[0037] Lower pressing plate 3, used for placing battery cells;

[0038] A transmission mechanism 4, which is disposed below the lower pressing plate support member 1-1 and is used to drive the lower pressing plate 3 to move laterally relative to the lower pressing plate support member 1-1;

[0039] The lifting mechanism 5 has a fixed end disposed on the transmission mechanism 4, and the lower pressure plate 3 is disposed on its output end; when the transmission mechanism 4 drives the lower pressure plate 3 to move, the lifting mechanism 5 drives the lower pressure plate 3 to lift up, so as to place the lower pressure plate 3 on the lower pressure plate support 1-1 or remove the lower pressure plate 3 from the lower pressure plate support 1-1.

[0040] The transmission mechanism is used to drive the lower pressing plate to move horizontally relative to the lower pressing plate support so that the manipulator can pick up and place materials from the lower pressing plate; when in use, the manipulator places the battery cell on the lower pressing plate at a position away from the frame, and when the transmission mechanism drives the lower pressing plate to move adjacent to the frame, the lifting mechanism lifts the lower pressing plate (such as Figure 4 ), so as to place the lower pressing plate onto the lower pressing plate support (as shown in Figure 5 As shown), at this time, the pressure mechanism applies pressure to the battery cells on the lower pressure plate for a pressure test. The pressure generated by the pressure mechanism will be transmitted from the lower pressure plate to the frame, and the pressure does not act on the transmission mechanism. Therefore, the device can withstand a maximum pressure between 500 and 20000 kgf; after the pressure test is completed, the transmission mechanism drives the lifting mechanism to move to the bottom of the frame. After the lifting mechanism lifts the lower pressure plate, the transmission mechanism drives the lower pressure plate away from the frame to allow the robot to take away the battery cells.

[0041] Specifically, the transmission mechanism is any mechanism that can make the lower pressing plate 3 move laterally relative to the lower pressing plate support 1-1, such as a chain transmission mechanism, a belt transmission mechanism, a ball screw transmission mechanism, or a worm transmission mechanism;

[0042] Furthermore, the lower pressure plate support member 1 - 1 includes a left support member 1 - 11 and a right support member 1 - 12, and the transmission mechanism 4 is disposed between the left support member 1 - 11 and the right support member 1 - 12.

[0043] like Figure 4-5As shown, specifically, the distance from the left support member 1 - 11 to the right support member 1 - 12 is d, and the length of the lower pressing plate 3 is D; D and d satisfy: D>d.

[0044] More specifically, the above-mentioned d refers to the shortest distance from the left support 1-11 to the right support 1-12, so that the lower pressure plate 3 can be stably placed on the lower pressure plate support and avoid the lower pressure plate 3 from being separated from the lower pressure plate support 1-1 when the battery cell is pressurized and tested, thereby affecting the test results.

[0045] Specifically, the left support member 1-11 includes a left support seat 1-111 for placing one end of the lower pressing plate 3 and a left support group 1-112 provided below the left support seat 1-111, and the left support group 1-112 is used to provide a support point for the left support seat 1-111 to support the lower pressing plate 3;

[0046] The right support member 1-12 includes a right support seat 1-121 for placing the other end of the lower pressure plate 3 and a right support group 1-122 arranged below the right support seat 1-121. The right support group 1-122 is used to provide a support point for the right support seat 1-121 to support the lower pressure plate 3.

[0047] The right support group 1-122 and the left support group 1-112 are configured to lift the left support seat 1-111 and the right support seat 1-121, thereby providing sufficient height for the lifting mechanism 5 to lift the lower pressure plate 3.

[0048] More specifically, the frame 1 also includes a basic base 1-2;

[0049] One end of the left support group 1-112 away from the left support seat 1-111 and one end of the right support group 1-122 away from the right support seat 1-121 are commonly connected to the basic base 1-2, and the basic base 1-2 is used to balance the stress between the left support group 1-112 and the right support group 1-122 so that it can withstand greater pressure.

[0050] More specifically, the transfer point where the lower pressure plate 3 transfers force to the left support seat 1-111 is located above the left support group 1-112; the transfer point where the lower pressure plate 3 transfers force to the right support seat 1-121 is located above the right support group 1-122; this arrangement has two advantages: First, when the pressure mechanism presses down on the lower pressure plate, the deformation degree of the left support seat 1-111 and the right support seat 1-121 is reduced, the fatigue strength of the left support seat 1-111 and the right support seat 1-121 is improved, and the service life of the left support seat 1-111 and the right support seat 1-121 is improved; Second, the compressive strength of the left support seat 1-111 and the right support seat 1-121 is improved.

[0051] Furthermore, the frame 1 further comprises a guide rod 1-3 arranged perpendicularly to the lower pressing plate support member 1-1, and one end of the guide rod 1-3 away from the lower pressing plate support member 1-1 is connected to a fixing plate 1-4;

[0052] The pressurizing mechanism 2 includes a driving member 21 and an upper pressure plate 22 arranged at the output end of the driving member 21; the driving member 21 is arranged on the fixed plate 1-4, and the output end of the driving member 21 passes through the fixed plate 1-4 and is connected to the upper pressure plate 22, and the driving member 21 drives the upper pressure plate 22 to slide along the guide rod 1-3 to pressurize the battery cell.

[0053] like Figure 2 As shown, specifically, the guide rod 1 - 3 is arranged on a side of the lower pressure plate support 1 - 1 away from the transmission mechanism 4 .

[0054] Furthermore, the transmission mechanism 4 includes a guide rail 41 and a sliding member 42 slidably disposed on the guide rail 41 , and the lifting mechanism 5 is disposed on the sliding member 42 .

[0055] Specifically, the length of the guide rail 41 is greater than the width of the frame 1, and the first station 41A and the second station 41B are respectively provided at both ends of the guide rail 41 and on both sides of the frame 1. The guide rail 41 provides a stroke for the sliding member 42 to drive the lifting mechanism 5 to slide to the first station 41A and the second station 41B. When the device is used, the material picking and discharging mechanism can be set on either the first station 41A or the second station 41B. The device has strong symmetry and enhanced flexibility in combination with other equipment.

[0056] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A battery cell testing device, characterized in that: include: A frame (1) on which a lower pressing plate support (1-1) is provided; A pressurizing mechanism (2), which is mounted on the frame (1) and disposed above the lower pressure plate support (1-1), and is used to pressurize the battery cell; A lower pressing plate (3) for placing the battery cells; A transmission mechanism (4), which is arranged below the lower pressing plate support member (1-1) and is used to drive the lower pressing plate (3) to move laterally relative to the lower pressing plate support member (1-1); A lifting mechanism (5), a fixed end of which is arranged on the transmission mechanism (4), and the lower pressure plate (3) is arranged on its output end; when the transmission mechanism (4) drives the lower pressure plate (3) to move, the lifting mechanism (5) drives the lower pressure plate (3) to lift up, so as to place the lower pressure plate (3) on the lower pressure plate support member (1-1) or remove the lower pressure plate (3) from the lower pressure plate support member (1-1).

2. The battery cell testing device according to claim 1, characterized in that: The lower pressure plate support member (1-1) comprises a left support member (1-11) and a right support member (1-12), and the transmission mechanism (4) is arranged between the left support member (1-11) and the right support member (1-12).

3. The battery cell testing device according to claim 2, characterized in that: The distance between the left support member (1-11) and the right support member (1-12) is d, and the length of the lower pressing plate (3) is D; D and d satisfy: D>d.

4. The battery cell testing device according to claim 2, characterized in that: The left support member (1-11) comprises a left support seat (1-111) for placing one end of the lower pressing plate (3) and a left support group (1-112) arranged below the left support seat (1-111), wherein the left support group (1-112) is used to provide a support point for the left support seat (1-111) to support the lower pressing plate (3); The right support member (1-12) comprises a right support seat (1-121) for placing the other end of the lower pressure plate (3) and a right support group (1-122) arranged below the right support seat (1-121), and the right support group (1-122) is used to provide a support point for the right support seat (1-121) to support the lower pressure plate (3).

5. The battery cell testing device according to claim 4, characterized in that: The frame (1) also includes a basic base (1-2); One end of the left support group (1-112) away from the left support seat (1-111) and one end of the right support group (1-122) away from the right support seat (1-121) are connected to a base base (1-2), and the base base (1-2) is used to balance the stress between the left support group (1-112) and the right support group (1-122).

6. The battery cell testing device according to claim 4, characterized in that: The transfer point where the lower pressure plate (3) transfers force to the left support seat (1-111) is located above the left support group (1-112); the transfer point where the lower pressure plate (3) transfers force to the right support seat (1-121) is located above the right support group (1-122).

7. The battery cell testing device according to claim 1, characterized in that: The frame (1) further comprises a guide rod (1-3) arranged perpendicular to the lower pressing plate support member (1-1), and one end of the guide rod (1-3) away from the lower pressing plate support member (1-1) is connected to a fixing plate (1-4); The pressurizing mechanism (2) comprises a driving member (21) and an upper pressing plate (22) arranged at the output end of the driving member (21); the driving member (21) is arranged on the fixing plate (1-4), the output end of the driving member (21) passes through the fixing plate (1-4) and is connected to the upper pressing plate (22), and the driving member (21) drives the upper pressing plate (22) to slide along the guide rod (1-3) to pressurize the battery cell.

8. The battery cell testing device according to claim 7, characterized in that: The guide rod (1-3) is arranged on a side of the lower pressure plate support (1-1) away from the transmission mechanism (4).

9. The battery cell testing device according to claim 1, characterized in that: The transmission mechanism (4) comprises a guide rail (41) and a sliding member (42) slidably arranged on the guide rail (41), and the lifting mechanism (5) is arranged on the sliding member (42).

10. The battery cell testing device according to claim 9, characterized in that: The length of the guide rail (41) is greater than the width of the frame (1); a first workstation (41A) and a second workstation (41B) are respectively provided at both ends of the guide rail (41) and located on both sides of the frame (1); the guide rail (41) provides a stroke for the sliding member (42) to drive the lifting mechanism (5) to slide to the first workstation (41A) and the second workstation (41B).

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