Battery clamp and positioning device thereof

Abstract

The utility model relates to a battery clamp, which comprises two clamping plates, the two clamping plates are arranged oppositely, a clamping gap is arranged between the two clamping plates, the clamping gap is used for placing a battery, and when the battery is placed in the clamping gap, the two clamping plates respectively clamp a first surface and a second surface of the battery from two sides. Wherein the first surface and the second surface are two opposite surfaces of the battery; the supporting piece is arranged in the clamping gap and connected with one of the clamping plates, and the supporting piece is used for supporting the bottom surface of the battery; the positioning piece is arranged in the clamping gap and connected with the clamping plate, and the positioning piece is used for abutting against and positioning the battery from the side where the third surface of the battery is located; through the arrangement of the clamping plate, the supporting piece and the positioning piece, the problem that the large surface of the battery cell is easy to deform and swell is solved, and the device can be adapted to various battery boundary dimensions.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery detection, in particular to a battery clamp and a positioning device thereof. Background Art

[0002] With the development of the new energy industry, the market has higher and higher requirements for battery energy density, and the battery size and area have also increased accordingly. Therefore, the battery is more prone to deformation, swelling and other appearance defects under the action of external force than before. In the actual battery production process, after the square aluminum shell lithium battery top cover is welded, the battery needs to be subjected to positive pressure helium inspection to detect its air tightness. The aluminum shell cavity and the inside of the battery are evacuated, and then helium is injected into the battery. The air tightness of the battery is judged by detecting the helium content in the aluminum shell cavity outside the battery.

[0003] During the testing process, helium will exert air pressure on the battery from the inside out, and the interior of the battery will be in a positive pressure state relative to the cavity, which will cause large-surface deformation and swelling of the battery cell. The existing battery fixtures cannot control the deformation and swelling of the large-surface of the battery cell well. At the same time, customers currently have many demands on the battery's external dimensions, and battery fixtures of different sizes need to be designed according to the battery cell size, which results in high modification costs and long modification cycles. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the problem that the battery clamp in the prior art cannot well control the deformation and swelling of the large surface of the battery cell, and the battery clamp cannot meet the external dimensions of various batteries, and further provide a battery clamp and a positioning device thereof, which, by arranging a clamping plate, a support member and a positioning member, not only solves the problem that the large surface of the battery cell is easy to deform and bulge, but also can adapt to various external dimensions of batteries.

[0005] In order to solve the above technical problems, the utility model provides a battery clamp, comprising:

[0006] Two clamping plates, the two clamping plates are arranged opposite to each other and a clamping gap is provided between the two clamping plates, the clamping gap is used to place a battery, and when the battery is placed in the clamping gap, the two clamping plates clamp a first surface and a second surface of the battery from both sides, respectively, wherein the first surface and the second surface are two opposite surfaces of the battery;

[0007] A support member, which is arranged in the clamping gap and connected to one of the clamping plates, and is used to support the bottom surface of the battery;

[0008] A positioning member is arranged in the clamping gap and connected to the clamping plate, and the positioning member is used to abut and position the battery from the side where the third surface of the battery is located.

[0009] In one embodiment of the utility model, the clamping plate connected to the support member is provided with a first strip hole extending along the Z-axis direction, a first fastener movable along the Z-axis direction is passed through the first strip hole, and the support member is fixed to the clamping plate through the first fastener.

[0010] In one embodiment of the utility model, the clamping plate connected to the positioning member is provided with a second strip hole extending along the Y-axis direction, a second fastener movable along the Y-axis direction is passed through the second strip hole, and the positioning member is fixed to the clamping plate via the second fastener.

[0011] In one embodiment of the present invention, the positioning member is configured as a long strip structure extending along the Z-axis direction; or,

[0012] The clamping plate is provided with a plurality of first strip holes at intervals along the Z-axis direction, and the positioning member comprises a plurality of positioning member split bodies, and the plurality of positioning member split bodies are respectively connected to the plurality of first strip holes correspondingly.

[0013] In one embodiment of the utility model, a clamping fixture is further included, wherein the clamping fixture is connected to the side of the clamping plate and is used to adjust the clamping gap to clamp or loosen the battery.

[0014] In an embodiment of the present invention, the clamping fixture is configured as a buckle.

[0015] In one embodiment of the utility model, the positioning members are provided with two along the Y-axis direction, and the two positioning members are respectively used to abut against the fourth surface and the third surface of the battery, wherein the third surface and the fourth surface are two opposite surfaces of the battery.

[0016] In order to solve the problem of fixing the battery clamp, a positioning device is also provided, including a base plate and a plurality of fixing components. The base plate and the plurality of fixing components are arranged to form a positioning space for positioning the battery clamp. The battery clamp is supported on the base plate, and the plurality of fixing components are respectively used to clamp the clamping plates of the battery clamp from the Y and X axis directions.

[0017] In one embodiment of the utility model, the fixing assembly includes a first positioning block and a second positioning block relatively arranged on the base plate along the X-axis direction, and the first positioning block and the second positioning block are arranged on both sides of the two clamping plates along the X-axis direction and clamp the two clamping plates respectively.

[0018] In one embodiment of the utility model, the fixing assembly further comprises a third positioning block arranged on the bottom plate, and the third positioning block is located at any end of the two clamping plates along the Y-axis direction, and the third positioning block is configured to abut the two clamping plates simultaneously.

[0019] The above technical solution of the utility model has the following advantages compared with the prior art:

[0020] The battery clamp described in the utility model clamps the first surface and the second surface of the battery by forming a clamping gap with two clamping plates, which can eliminate the outward pressure on the first surface and the second surface of the battery caused by the positive pressure during helium inspection, thereby avoiding deformation and expansion of the first surface and the second surface of the battery; by arranging support members and positioning members on the clamping plates to position the battery, the support members and the positioning members can also be set for compatibility according to batteries of different sizes, so that the battery clamp can be compatible with batteries of different sizes, effectively reducing the modification cost and cycle of the battery clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0022] Figure 1 It is a structural schematic diagram of a side view of a battery clamp in a preferred embodiment of the utility model.

[0023] Figure 2 It is a schematic structural diagram of a battery clamp and a positioning device in a preferred embodiment of the utility model.

[0024] Figure 3 for Figure 2 A schematic diagram of the structure of a top view of the battery clamp and positioning device is shown.

[0025] Figure 4 for Figure 1 A schematic structural diagram of a front view of a clamping plate and a positioning member of a battery clamp is shown.

[0026] Figure 5 for Figure 1 A schematic structural diagram of a rear view of a clamp and a support member of the battery clamp shown.

[0027] Figure 6 for Figure 5 A schematic structural diagram of a front view of the splint and support member shown.

[0028] Figure 7 for Figure 2 A schematic structural diagram of a side view of a battery clamp and a positioning device is shown.

[0029] Figure 8 It is a schematic diagram of the structure of the battery in the preferred embodiment of the utility model.

[0030] Explanation of the reference numerals in the specification: 1. bottom plate; 2. first positioning block; 21. second positioning block; 22. third positioning block; 3. clamping plate; 4. clamping gap; 5. buckle; 6. positioning hole; 71. first strip hole; 72. second strip hole; 73. third strip hole; 74. fourth strip hole; 75. fifth strip hole; 8. support member; 9. positioning member; 10. helium filling port; 12. first surface; 13. second surface; 14. third surface; 15. fourth surface; 16. bottom surface; 17. top surface; 18. first fastener; 19. second fastener. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0032] Embodiment 1

[0033] Reference Figure 1 As shown, one embodiment of the utility model discloses a battery clamp for use in square battery air tightness detection, referring to Figure 8 As shown, the square battery includes six surfaces, namely a first surface 12, a second surface 13, a third surface 14, a fourth surface 15, a top surface 17 and a bottom surface 16, wherein the first surface 12 and the second surface 13 are arranged opposite to each other, and the third surface 14 and the fourth surface 15 are arranged opposite to each other. According to the size of the area, the first surface 12 and the second surface 13 are large surfaces of the square battery, and the third surface 14 and the fourth surface 15 are small surfaces of the square battery.

[0034] Specifically, the battery fixture for air tightness detection of the above square batteries disclosed in this embodiment includes:

[0035] Two clamping plates 3, the two clamping plates 3 are arranged opposite to each other and a clamping gap 4 is provided between the two clamping plates 3, the size of the clamping gap 4 is changed by changing the relative distance between the two clamping plates 3, the clamping gap 4 is used to place the battery to be tested, and when the battery is placed in the clamping gap 4, the two clamping plates 3 clamp the relative first surface 12 and second surface 13 of the battery from both sides, respectively, a support member 8 is arranged in the clamping gap 4 and connected to one of the clamping plates 3, the support member 8 is used to support the bottom surface 16 of the battery to achieve auxiliary positioning of the battery in the Z-axis direction, and the support member 8 extends along the Y-axis direction so as to fully support the bottom surface 16 of the battery;

[0036] The positioning member 9 is arranged in the clamping gap 4 and is connected to the clamping plate 3. Specifically, the positioning member 9 and the support member 8 can be arranged on the clamping plate 3 on the left side, and the positioning member 9 and the support member 8 can also be arranged on the clamping plate 3 on the right side. The positioning member 9 and the support member 8 can also be arranged on the clamping plates on the right and left sides respectively. The positioning member 9 is used to abut and position the third surface 14 of the battery from the side where the third surface 14 of the battery is located, or the positioning member 9 is used to abut and position the fourth surface 15 of the battery from the side where the fourth surface 15 of the battery is located, so as to realize auxiliary positioning of the battery in the Y-axis direction.

[0037] In one embodiment of the present invention, referring to Figure 5 and 8 As shown, the clamping plate 3 connected to the support member 8 is provided with four first strip holes 71 extending along the Z-axis direction, and the first strip holes 71 are penetrated by a first fastener 18 that can move along the Z-axis direction. The support member 8 is fixed to the clamping plate 3 by the first fastener 18, and the relative positions of the support member 8 and the clamping plate 3 can be adjusted by loosening the first fastener 18, so as to change the height of the support member 8 so that the support member 8 can support batteries of different heights, ensuring that the top surface 17 of the battery matches the top of the battery clamp, and then the battery clamp can match batteries of different heights; the first fastener 18 is preferably a bolt.

[0038] In one embodiment of the present invention, referring to Figure 4 and 7 As shown, the clamping plate 3 connected to the positioning member 9 is provided with four second strip holes 72 extending along the Y-axis direction, and the second strip holes 72 are penetrated by a second fastener 19 that can move along the Y-axis direction. The positioning member 9 is fixed to the clamping plate 3 by the second fastener 19, and the relative position of the positioning member 9 and the clamping plate 3 can be adjusted by loosening the second fastener 19, so as to change the horizontal position of the positioning member 9 so that the positioning member 9 can abut against the third surface 14 or the fourth surface 15 of batteries of different sizes, so that the battery clamp can match batteries of different widths; the second fastener 19 is preferably a bolt.

[0039] In one embodiment of the present invention, referring to Figure 4 As shown, the positioning member 9 is configured as a long strip structure extending along the Z-axis direction. The positioning member 9 with a long strip structure can reduce the device cost and improve the installation efficiency; or,

[0040] The clamping plate 3 is provided with four first strip holes 71 at intervals along the Z-axis direction. The positioning member 9 includes two or more positioning member splits. The two positioning member splits are respectively connected to the two first strip holes 71. The positioning member split arrangement can reduce the overall weight of the device.

[0041] In one embodiment of the present invention, referring to Figure 2 As shown, four clamping fixtures are also included, which are used to connect and lock the side surfaces of the two clamping plates 3, and two clamping fixtures are respectively provided on both sides of the two clamping plates 3, which are used to adjust the size of the clamping gap 4 to clamp or loosen the battery.

[0042] In one embodiment of the present invention, referring to Figure 2 As shown, the clamping fixing member is configured as a buckle 5, which is installed on the sides of the two clamps 3 by bolts. The buckle 5 can realize quick installation and removal of the two clamps 3. Due to the different thickness of the batteries, the clamping gap 4 of the clamps 3 changes accordingly. By adjusting the size of the buckle 5 or installing buckles 5 of different sizes, the use requirements of batteries of different thicknesses can be met, ensuring that the clamps 3 can clamp the batteries.

[0043] In one embodiment of the present invention, referring to Figure 4 As shown, the positioning members 9 have two arranged along the Y-axis direction, and the two positioning members 9 are used to abut against the fourth surface 15 and the third surface 14 of the battery respectively to achieve the fixation of the battery in the Y-axis direction.

[0044] Embodiment 2

[0045] On the other hand, referring to Figure 1 and 3 As shown, in order to solve the problem of fixing the battery clamp, another embodiment of the utility model further provides a positioning device, which includes a base plate 1 and a plurality of fixing components, the base plate 1 and the plurality of fixing components enclose a positioning space for positioning the battery clamp, the battery clamp is supported on the base plate 1, and the plurality of fixing components are respectively used to clamp the clamping plate 3 of the battery clamp from the Y and X axis directions to fix the battery clamp.

[0046] In one embodiment of the present invention, referring to Figure 3 As shown, the fixing assembly includes a first positioning block 2 and a second positioning block 21 which are relatively arranged on the base plate 1 along the X-axis direction. The first positioning block 2 and the second positioning block 21 are arranged on both sides of the two clamping plates 3 along the X-axis direction and clamp the two clamping plates 3 respectively. The first positioning block 2 is provided with a third strip hole 73 extending along the X-axis direction, and the second positioning block 21 is provided with a fourth strip hole 74 extending along the X-axis direction. Correspondingly, the base plate 1 is provided with a plurality of positioning holes 6. The first positioning block 2 and the second positioning block 21 are fixed to the base plate 1 by bolts so as to adjust the positions of the first positioning block 2 and the second positioning block 21, thereby adjusting the size of the positioning space.

[0047] In one embodiment of the present invention, referring to Figure 3As shown, the fixing assembly also includes a third positioning block 22 arranged on the base plate 1, and the third positioning block 22 is located at any end of the two clamps 3 along the Y-axis direction, and the third positioning block 22 is configured to simultaneously abut the two clamps 3 to achieve Y-axis positioning of the battery clamp, and the third positioning block 2 is provided with a fifth strip hole 75 extending along the Y-axis direction, and the fifth strip hole 75 is arranged corresponding to the positioning hole 6, and the third positioning block 22 is fixed to the base plate 1 by bolts to adjust the position of the third positioning block 22, thereby adjusting the size of the positioning space.

[0048] The working principle of the battery clamp and the positioning device thereof of the utility model is:

[0049] Adjust the height of the support 8 according to the height of the battery in advance, then place the bottom surface 16 of the battery to be tested on the support 8 in the clamping gap 4 to complete the auxiliary positioning of the battery in the Z-axis direction, then move the positioning member 9 to abut against the third surface 14 or the fourth surface 15 of the battery to complete the auxiliary positioning of the battery in the Y-axis direction, and then connect the two clamps 3 through the buckle 5 so that the large surfaces of the two clamps 3 clamp the first surface 12 and the second surface 13 of the battery respectively, to complete the locking of the battery in the X-axis direction; the positioning device is placed in the detection cavity in advance, and the battery fixture and the battery are placed on the positioning device as a whole, and the battery fixture is clamped and fixed from the X-axis direction by the first positioning block 2 and the second positioning block 21, and then the two clamps 3 are abutted from the Y-axis direction by the third positioning block 22 to complete the fixation of the battery and the battery fixture.

[0050] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A battery clamp, characterized in that: include, Two clamping plates (3), the two clamping plates (3) are arranged opposite to each other and a clamping gap (4) is provided between the two clamping plates (3), the clamping gap (4) is used to place a battery, and when the battery is placed in the clamping gap (4), the two clamping plates (3) clamp the first surface (12) and the second surface (13) of the battery from both sides respectively, wherein the first surface (12) and the second surface (13) are two opposite surfaces of the battery; a support member (8) disposed in the clamping gap (4) and connected to one of the clamping plates (3), the support member (8) being used to support the bottom surface (16) of the battery; A positioning member (9) is arranged in the clamping gap (4) and connected to the clamping plate (3), and the positioning member (9) is used to abut against and position the battery from the side where the third surface of the battery is located.

2. A battery clamp according to claim 1, characterized in that: The clamping plate (3) connected to the support member (8) is provided with a first strip hole (71) extending along the Z-axis direction, and a first fastener (18) movable along the Z-axis direction is inserted into the first strip hole (71), and the support member (8) is fixed to the clamping plate (3) via the first fastener (18).

3. A battery clamp according to claim 1, characterized in that: The clamping plate (3) connected to the positioning member (9) is provided with a second strip hole (72) extending along the Y-axis direction, and a second fastener (19) movable along the Y-axis direction is inserted into the second strip hole (72), and the positioning member (9) is fixed to the clamping plate (3) via the second fastener (19).

4. A battery clamp according to claim 1, characterized in that: The positioning member (9) is configured as a long strip structure extending along the Z-axis direction; or, The clamping plate (3) is provided with a plurality of first strip-shaped holes (71) at intervals along the Z-axis direction, and the positioning member (9) comprises a plurality of positioning member parts, and the plurality of positioning member parts are respectively connected to the plurality of first strip-shaped holes (71).

5. A battery clamp according to claim 1, characterized in that: It also comprises a clamping fixture (5), which is connected to the side of the clamping plate (3) and is used to adjust the clamping gap (4) to clamp or release the battery.

6. A battery clamp according to claim 5, characterized in that: The clamping fixture (5) is configured as a buckle.

7. A battery clamp according to claim 1, characterized in that: The positioning members (9) have two arranged along the Y-axis direction, and the two positioning members (9) are used to abut against the fourth surface (15) and the third surface (14) of the battery respectively, wherein the third surface (14) and the fourth surface (15) are two opposite surfaces of the battery.

8. A positioning device, characterized in that: It comprises a base plate (1) and a plurality of fixing components, wherein the base plate (1) and the plurality of fixing components are arranged to form a positioning space for positioning a battery clamp as described in any one of claims 1 to 7, wherein the battery clamp is supported on the base plate (1), and the plurality of fixing components are respectively used to clamp a clamp (3) of the battery clamp in the Y and X axis directions.

9. A positioning device according to claim 8, characterized in that: The fixing assembly comprises a first positioning block (2) and a second positioning block (21) which are arranged on the base plate (1) in a direction opposite to each other along the X-axis. The first positioning block (2) and the second positioning block (21) are arranged on both sides of the two clamping plates (3) along the X-axis and clamp the two clamping plates (3) respectively.

10. A positioning device according to claim 8, characterized in that: The fixing assembly further comprises a third positioning block (22) arranged on the base plate (1), and the third positioning block (22) is located at any end of the two clamping plates (3) along the Y-axis direction, and the third positioning block (22) is arranged to abut against the two clamping plates (3) at the same time.

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