Hardness testing device for soft package battery

Abstract

The utility model relates to the technical field of battery testing devices, and discloses a hardness testing device for a soft package battery, which comprises a working table, a supporting plate, a clamping assembly, a clamping jaw, a material pressing piece and a measuring piece, when the device is used, one end of the soft package battery is clamped through the clamping assembly, the soft package battery and the material pressing piece are connected through the clamping jaw, and the measuring piece is arranged on the working table. According to the device, the flexible package battery is arranged on the measuring part, the flexible package battery is bent through the material pressing part, the descending distance L1 of the material pressing part is recorded through the measuring part, the L1 is the deflection value of the flexible package battery, the hardness of the flexible package battery is reflected through the L1, the change amplitude is large, observation is convenient, and the device is simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing devices, in particular to a hardness testing device for soft-pack batteries. Background Art

[0002] At present, due to reasons such as the injection volume and production process of soft-pack batteries, the surface of the battery is soft and easy to deform. For soft-pack batteries with larger length and width dimensions and thinner thickness, the battery is softer, which is not conducive to the subsequent automatic assembly of the battery pack. Especially with the trend of thinning of mobile electronic products, the required thickness of the battery is getting thinner, and the requirements for the appearance flatness and hardness of lithium-ion batteries are getting higher and higher.

[0003] Therefore, before the soft-pack battery is put into production, hardness testing is required. There are mainly two existing testing methods. One is that manual workers judge the hardness of the battery by pressing or knocking the battery by hand. This method depends entirely on experience and feeling, and the techniques and forces of each person are different, resulting in unreliable results. The other is to test through a hardness testing device, and judge the hardness by the deformation amount generated after the battery is subjected to pressure. However, the difference in the deformation amounts of soft-pack batteries with different hardnesses under the same pressure may be very small, which requires a very high precision for the rangefinder, and the overall testing process is cumbersome. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hardness testing device for soft-pack batteries, which can not only accurately measure the hardness of soft-pack batteries, but also is convenient to use and simple to operate.

[0005] To achieve the above purpose, the utility model provides a hardness testing device for soft-pack batteries, including: a workbench, a support plate, a clamping assembly, clamping jaws, a pressure-applying member and a measuring member; the support plate and the measuring member are arranged at intervals along a first direction on one side of the workbench in a second direction, and both the support plate and the measuring member extend along the second direction; the clamping assembly is arranged on the side of the support plate facing the measuring member for clamping one end of the soft-pack battery in the first direction; the clamping jaws are used for clamping the other end of the soft-pack battery in the first direction; the pressure-applying member is arranged at the bottom of the clamping jaws for increasing the weight of the clamping jaws; the side of the measuring member facing the support plate has scales, and the measuring member is used for measuring the descending distance L of the pressure-applying member 1 .

[0006] Optionally, the clamping assembly includes a first clamping plate and a second clamping plate, the first clamping plate is arranged on the side of the support plate facing the measuring piece, and the first clamping plate extends along the first direction, the support plate also has a first slide groove on the side facing the measuring piece, the first slide groove extends along the second direction, the second clamping plate is slidably connected to the first slide groove at one end in the first direction, and as the second clamping plate slides along the first slide groove, the first clamping plate and the second clamping plate can clamp the soft-pack battery.

[0007] Optionally, a side of the first clamping plate facing the second clamping plate and a side of the second clamping plate facing the first clamping plate are both coated with a Teflon layer.

[0008] Optionally, the length of the distance from one end of the first clamping plate away from the support plate to the support plate and the length of the distance from one end of the second clamping plate away from the support plate to the support plate in the first direction are both L 2 , the length of the soft pack battery in the first direction is L 3 , L 2 <L 3 / 3.

[0009] Optionally, one side of the support plate on the workbench also has a second slide groove, the second slide groove extends along the first direction, and the second slide groove and the support plate are spaced apart along the first direction, and one end of the measuring piece is slidably connected to the second slide groove.

[0010] Optionally, the material pressing member includes a weight and a sling, one end of the sling is connected to an end of the clamping jaw away from the support plate, and the other end is detachably connected to the weight.

[0011] Optionally, a photographing component is also included, which is arranged on the workbench and is used to record the changing state of the soft-pack battery.

[0012] Optionally, the measuring piece is a ruler.

[0013] Compared with the prior art, the hardness testing device for soft-pack batteries in the embodiment of the utility model has the following beneficial effects: when the device is in use, one end of the soft-pack battery is clamped by the clamping assembly, the soft-pack battery and the pressing piece are connected by the clamping claw, and the pressing piece bends the soft-pack battery, and the descending distance L of the pressing piece is recorded by the measuring piece. 1 ,L 1 That is the deflection value of the soft pack battery, which is L 1 It reflects the hardness of the soft-pack battery. Not only does it have a large variation range and is easy to observe, but the device also has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the main structure of the hardness testing device for soft-pack batteries according to an embodiment of the present utility model;

[0015] Figure 2 is a side view of the hardness testing device for soft-pack batteries according to an embodiment of the present utility model.

[0016] In the figure, 1 is a workbench; 11 is a second chute; 2 is a support plate; 21 is a first chute; 3 is a clamping assembly; 31 is a first clamping plate; 32 is a second clamping plate; 4 is a jaw; 5 is a pressure-applying member; 51 is a weight; 52 is a suspension rope; 6 is a measuring member; 7 is a soft-pack battery; X is a first direction; Y is a second direction. Detailed implementation manners

[0017] The following further describes in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model but are not intended to limit the scope of the present utility model.

[0018] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

[0019] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0020] As Figure 1 shown, a hardness testing device for soft-pack batteries according to an embodiment of the present utility model includes: a workbench 1, a support plate 2, a clamping assembly 3, a jaw 4, a pressure-applying member 5, and a measuring member 6; the support plate 2 and the measuring member 6 are spaced along the first direction X on one side of the workbench 1 in the second direction Y, and both the support plate 2 and the measuring member 6 extend along the second direction Y; the clamping assembly 3 is disposed on the side of the support plate 2 facing the measuring member 6 for clamping one end of the soft-pack battery 7 in the first direction X; the jaw 4 is used for clamping the other end of the soft-pack battery 7 in the first direction X; the pressure-applying member 5 is disposed at the bottom of the jaw 4 for increasing the weight of the jaw 4; the side of the measuring member 6 facing the support plate 2 has a scale, and the measuring member 6 is used for measuring the descending distance L of the pressure-applying member 5 1 .

[0021] Based on the above solution, when the device is in use, one end of the soft-pack battery 7 is clamped by the clamping assembly 3, the soft-pack battery 7 is connected to the pressure-applying member 5 through the clamping jaw 4, and the soft-pack battery 7 is bent by the pressure-applying member 5. The measuring member 6 records the descending distance L of the pressure-applying member 5. 1 ,L 1 That is the deflection value of the soft-pack battery 7. From L 1 it can be seen that the hardness of the soft-pack battery 7 can be reflected. Not only does it have a large change range and is convenient for observation, but also the structure of the device is simple and easy to use.

[0022] As Figure 1 shown, in order to enhance the applicability of the device, the clamping assembly 3 includes a first clamping plate 31 and a second clamping plate 32. The first clamping plate 31 is arranged on one side of the support plate 2 facing the measuring member 6, and the first clamping plate 31 extends along the first direction X. There is also a first sliding groove 21 on one side of the support plate 2 facing the measuring member 6, and the first sliding groove 21 extends along the second direction Y. One end of the second clamping plate 32 in the first direction X is slidably connected to the first sliding groove 21. As the second clamping plate 32 slides along the first sliding groove 21, the first clamping plate 31 and the second clamping plate 32 can clamp the soft-pack battery 7, and the position of the second clamping plate 32 can be adjusted according to the size of the soft-pack battery 7 to adapt to soft-pack batteries 7 of different sizes and enhance the applicability of the device.

[0023] Optionally, in order to prevent the soft-pack battery 7 from short-circuiting, Teflon layers are coated on the side of the first clamping plate 31 facing the second clamping plate 32 and the side of the second clamping plate 32 facing the first clamping plate 31.

[0024] As Figure 2 shown, in order to ensure the smooth progress of the experiment and avoid affecting the bending of the soft-pack battery 7 due to the clamping assembly 3, the distances from the end of the first clamping plate 31 facing away from the support plate 2 to the support plate 2 and from the end of the second clamping plate 32 facing away from the support plate 2 to the support plate 2 in the first direction X are both L 2 , the length of the soft-pack battery 7 in the first direction X is L 3 ,L 2 <L 3 / 3.

[0025] As Figure 1 shown, in order to enhance the applicability of the device, there is also a second sliding groove 11 on one side of the workbench 1 where the support plate 2 is arranged. The second sliding groove 11 extends along the first direction X, and the second sliding groove 11 and the support plate 2 are spaced apart along the first direction X. One end of the measuring member 6 is slidably connected to the second sliding groove 11. By adjusting the position of the measuring member 6, it can adapt to soft-pack batteries 7 of different sizes, thereby enhancing the applicability of the device.

[0026] As Figure 1As shown, for ease of use, the pressing piece 5 includes a weight 51 and a hanging rope 52 , one end of the hanging rope 52 is connected to the end of the clamping jaw 4 away from the support plate 2 , and the other end is detachably connected to the weight 51 .

[0027] Optionally, in order to ensure the accuracy of the test data, a photographing component (not shown in the drawings) is also included. The photographing component is arranged on the workbench 1 and is used to record the changing state of the soft-pack battery 7.

[0028] Optionally, for ease of use, the measuring member 6 is a ruler.

[0029] The working process of the utility model is:

[0030] 1. Clamp the soft-pack battery 7 between the first clamping plate 31 and the second clamping plate 32;

[0031] 2. The clamping jaw 4 is placed at the end of the flexible battery away from the support plate 2, and the position of the weight 51 at this time is read by the measuring component 6 and recorded by the camera assembly;

[0032] 3. When the shape of the soft-pack battery 7 no longer changes, the position of the weight 51 at this time is read by the measuring unit 6, and the descending distance L of the weight 51 is calculated. 1 ;

[0033] 4. According to the descending distance L 1 To judge the hardness of the soft pack battery 7.

[0034] In summary, the embodiment of the utility model provides a hardness testing device for a soft-pack battery. When in use, the clamping assembly 3 clamps one end of the soft-pack battery 7, the clamping claw 4 connects the soft-pack battery 7 and the pressing piece 5, and the pressing piece 5 bends the soft-pack battery 7, and the measuring piece 6 records the descending distance L of the pressing piece 5. 1 ,L 1 That is, the deflection value of the soft pack battery 7, L 1 It reflects the hardness of the soft-pack battery 7. Not only does it have a large variation range and is easy to observe, but the device also has a simple structure and is easy to use.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A hardness testing device for soft pack batteries, characterized in that: include: Workbench, support plate, clamping assembly, clamping jaws, press and measuring parts; The support plate and the measuring member are spaced apart along the first direction at one side of the workbench in the second direction, and both the support plate and the measuring member extend along the second direction; The clamping assembly is disposed on a side of the support plate facing the measuring member, and is used to clamp one end of the soft-pack battery in the first direction; The clamp is used to clamp the other end of the soft-pack battery in the first direction; The material pressing piece is arranged at the bottom of the clamping jaw and is used to increase the weight of the clamping jaw; The measuring piece has a scale on one side facing the support plate, and the measuring piece is used to measure the descending distance L1 of the pressing piece.

2. The hardness testing device for soft pack batteries according to claim 1, characterized in that: The clamping assembly includes a first clamping plate and a second clamping plate, the first clamping plate is arranged on the side of the support plate facing the measuring piece, and the first clamping plate extends along the first direction, the side of the support plate facing the measuring piece also has a first slide groove, the first slide groove extends along the second direction, the second clamping plate is slidably connected to the first slide groove at one end in the first direction, and as the second clamping plate slides along the first slide groove, the first clamping plate and the second clamping plate can clamp the soft-pack battery.

3. The hardness testing device for soft pack batteries according to claim 2, characterized in that: A side of the first clamping plate facing the second clamping plate and a side of the second clamping plate facing the first clamping plate are both coated with a Teflon layer.

4. The hardness testing device for soft pack batteries according to claim 2, characterized in that: The distance from one end of the first clamping plate away from the support plate to the support plate and the distance from one end of the second clamping plate away from the support plate to the support plate are both L2 in the first direction, and the length of the soft-pack battery in the first direction is L3, L2<L3 / 3.

5. The hardness testing device for soft pack batteries according to claim 1, characterized in that: The workbench is provided with a second slide groove on one side of the support plate, the second slide groove extends along the first direction, and the second slide groove and the support plate are spaced apart along the first direction, and one end of the measuring piece is slidably connected to the second slide groove.

6. The hardness testing device for soft pack batteries according to claim 1, characterized in that: The material pressing piece comprises a weight-added weight and a hanging rope, one end of the hanging rope is connected to an end of the clamping claw away from the support plate, and the other end is detachably connected to the weight-added weight.

7. The hardness testing device for soft pack batteries according to claim 1, characterized in that: It also includes a photographing component, which is arranged on the workbench and is used to record the changing state of the soft-pack battery.

8. The hardness testing device for soft pack batteries according to claim 1, characterized in that: The measuring piece is a ruler.

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