Pressing tool

Abstract

The utility model discloses a pressing tool. The pressing tool comprises a pressing plate assembly, a pressing rod and a clamping device. The pressing tool is suitable for being arranged at the top of the battery pack and used for pressing the battery pack, and the pressing plate assembly is arranged at the top of the battery pack; the pressing rod is arranged at one end, deviating from the battery pack, of the pressing plate assembly; and the clamping device is used for clamping the pressing rod and the battery pack. According to the pressing tool disclosed by the utility model, the pressing plate assembly can press the top of the battery pack, so that a water cooling plate in the battery pack can be mutually pressed with the battery module, glue between the water cooling plate and the battery module is prevented from forming a branch shape, and the bonding strength between the water cooling plate and the battery module is improved. Meanwhile, the pressing tool can be used for air tightness pressing of the battery pack conveniently and can also be used for air tightness detection of the battery pack, and the use scene of the pressing tool is increased.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a clamping tool. Background Technology

[0002] Currently, for modules using blade cells, in order to increase the structural strength of the battery pack and meet water cooling requirements, the modules are generally bonded to the water cooling plate with adhesive to increase their structural strength and heat exchange performance. However, when the water cooling plate is bonded to the top of the battery pack, if the adhesive has not reached a certain strength, the stress generated by tightening the bolts will cause the adhesive to form dendrites, resulting in a reduction in the structural strength and bonding area between the adhesive and the module. At the same time, when the entire pack is airtight, the battery pack needs to be compressed to prevent the adhesive layer from being damaged by the gas that is filled in. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a clamping fixture, which improves the bonding strength between the water-cooling plate and the battery module, facilitates the airtightness clamping of the battery pack, and can also be used for the airtightness testing of the battery pack, thus increasing the application scenarios of the clamping fixture.

[0004] According to an embodiment of the present invention, a clamping fixture is adapted to be disposed on the top of a battery pack for clamping the battery pack. The clamping fixture includes: a clamping plate assembly disposed on the top of the battery pack; a pressure rod disposed at one end of the clamping plate assembly opposite to the battery pack; and a clamping device for clamping the pressure rod and the battery pack.

[0005] According to an embodiment of this utility model, the clamping fixture is disposed on the top of the battery pack via a clamping plate assembly; a pressure rod is disposed at the end of the clamping plate assembly opposite to the battery pack; a clamping device is used to clamp the pressure rod and the battery pack, so that the clamping plate assembly can clamp the top of the battery pack, allowing the water-cooling plate inside the battery pack to press against the battery module, preventing the glue between the water-cooling plate and the battery module from forming a dendritic shape, and improving the bonding strength between the water-cooling plate and the battery module. Simultaneously, the clamping fixture facilitates the airtightness clamping of the battery pack and can also be used for airtightness testing of the battery pack, increasing the application scenarios of the clamping fixture.

[0006] In some embodiments of this utility model, the clamping plate assembly includes: a counterweight bracket disposed on the top of the battery pack, the counterweight bracket having a counterweight groove on the side of the counterweight bracket opposite to the battery pack; and a counterweight block adapted to be disposed in the counterweight groove.

[0007] In some embodiments of this utility model, the battery pack includes battery modules, the battery modules are multiple spaced apart, the counterweights are multiple corresponding to the multiple battery modules, and the counterweight slots are multiple corresponding to the multiple battery modules.

[0008] In some embodiments of this utility model, a positioning block is connected to the peripheral wall of the clamping plate assembly, and the positioning block bends and extends toward the battery pack.

[0009] In some embodiments of this utility model, the positioning blocks are a plurality of spaced apart along the circumferential direction of the pressing plate assembly; and / or, the positioning blocks are detachably disposed on the pressing plate assembly, and the position of the positioning blocks in the circumferential direction of the pressing plate assembly is adjustable.

[0010] In some embodiments of this utility model, a limiting block is connected to the end face of the clamping plate assembly facing away from the battery pack, and the limiting block is disposed at the edge of the clamping plate assembly.

[0011] In some embodiments of this utility model, the limiting blocks are a plurality of blocks spaced apart along the circumferential direction of the pressing plate assembly.

[0012] In some embodiments of this utility model, the clamping device is provided at both ends of the pressure rod along its length; and / or, a lifting ring is connected to the end of the pressure plate assembly facing away from the battery pack; and / or, a soft pad is provided at the end of the pressure plate assembly facing the battery pack; and / or, the pressure rod is a plurality of spaced-apart rods.

[0013] In some embodiments of this utility model, the battery pack has a mating part, the clamping device is C-shaped, the pressure plate assembly, the pressure rod and the mating part are all located in the C-shaped opening of the clamping device, one end of the clamping device is connected to the pressure rod and the other end is connected to the mating part.

[0014] In some embodiments of this utility model, the clamping device and the pressure rod are connected by bolts; and / or, one end of the clamping device has a positioning post, and the mating part has a positioning hole that mates with the positioning post.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1This is a perspective view of the clamping fixture according to an embodiment of the present utility model;

[0018] Figure 2 This is a perspective view of the clamping fixture on the battery pack according to an embodiment of the present invention;

[0019] Figure 3 This is a perspective view of the clamping plate assembly of the clamping fixture according to an embodiment of the present utility model, wherein the counterweight is not shown;

[0020] Figure 4 This is an exploded view of the clamping plate assembly of the clamping fixture according to an embodiment of the present utility model;

[0021] Figure 5 This is a perspective view of the counterweight bracket of the clamping plate assembly of the clamping fixture according to an embodiment of the present utility model;

[0022] Figure 6 This is a perspective view of the pressure bar of the clamping fixture according to an embodiment of the present utility model;

[0023] Figure 7 This is a perspective view of the clamping device of the clamping fixture according to an embodiment of the present utility model;

[0024] Figure 8 This is an exploded view of the clamping device of the clamping fixture according to an embodiment of the present utility model.

[0025] Figure label:

[0026] 10. Clamping fixture;

[0027] 1. Pressure plate assembly; 11. Counterweight bracket; 111. Counterweight groove; 12. Counterweight block; 13. Positioning block; 14. Limiting block; 15. Lifting ring; 16. Soft pad;

[0028] 2. Clamping device; 21. C-shaped opening; 22. Bolt; 23. Positioning part; 231. Positioning post; 24. First section; 25. Second section; 26. Third section;

[0029] 3. Pressure bar; 31. Connecting part;

[0030] 20. Battery pack. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The following is for reference. Figures 1-8 Description of the clamping fixture 10 according to an embodiment of the present utility model.

[0035] like Figure 1 and Figure 2 As shown, the clamping fixture 10 according to an embodiment of the present utility model includes a clamping plate assembly 1, a pressure rod 3, and a clamping device 2.

[0036] Specifically, refer to Figure 1 and Figure 2 The clamping fixture 10 is adapted to be disposed on the top of the battery pack 20 for clamping the battery pack 20. The clamping plate assembly 1 is disposed on the top of the battery pack 20. The pressure rod 3 is disposed at the end of the clamping plate assembly 1 opposite to the battery pack 20. The clamping device 2 is used to clamp the pressure rod 3 and the battery pack 20. The pressure rod 3 is connected to the clamping plate assembly 1.

[0037] Understandably, in the initial stage of bonding the water-cooled plate and the battery module, the clamping device 2 clamps the pressure rod 3 and the battery pack 20, thereby pressing the pressure rod 3 against the pressure plate assembly 1. This allows the pressure plate assembly 1 to press against the top of the battery pack 20, ensuring that the water-cooled plate inside the battery pack 20 can press firmly against the battery module, preventing the adhesive between the water-cooled plate and the battery module from forming a dendritic pattern and improving the bonding strength between them. After the adhesive between the water-cooled plate and the battery module has cured, the fixture is removed, allowing for repeated use. Simultaneously, the clamping fixture 10 facilitates the airtightness clamping of the battery pack 20 and can also be used for airtightness testing, increasing the application scenarios and applicability of the clamping fixture 10.

[0038] Furthermore, such as Figure 1 and Figure 2 As shown, the clamping plate assembly 1 covers the top end face of the battery pack 20, thereby allowing each area between the water-cooling plate and the battery module to be clamped by the clamping plate assembly 1, which further prevents the glue between the water-cooling plate and the battery module from forming a dendritic shape, and further improves the bonding strength between the water-cooling plate and the battery module.

[0039] According to an embodiment of this utility model, the clamping fixture 10 is disposed on the top of the battery pack 20 via a clamping plate assembly 1; a pressure rod 3 is disposed at the end of the clamping plate assembly 1 opposite to the battery pack 20; and a clamping device 2 is used to clamp the pressure rod 3 and the battery pack 20, so that the clamping plate assembly 1 can clamp the top of the battery pack 20, allowing the water-cooling plate inside the battery pack 20 to press against the battery module, preventing the glue between the water-cooling plate and the battery module from forming a dendritic shape, and improving the bonding strength between the water-cooling plate and the battery module. Simultaneously, the clamping fixture 10 facilitates the airtightness clamping of the battery pack 20 and can also be used for airtightness testing of the battery pack 20, increasing the application scenarios of the clamping fixture 10.

[0040] In some embodiments of this utility model, such as Figures 2-5 As shown, the clamping plate assembly 1 includes a counterweight bracket 11 and a counterweight block 12. The counterweight bracket 11 is located on the top of the battery pack 20, and the side of the counterweight bracket 11 facing away from the battery pack 20 has a counterweight groove 111. The counterweight block 12 is adapted to be disposed in the counterweight groove 111.

[0041] Understandably, the counterweight 12 increases the pressure between the clamping plate assembly 1 and the battery pack 20, thereby further ensuring that the water-cooling plate inside the battery pack 20 can press firmly against the battery module, preventing the adhesive between the water-cooling plate and the battery module from forming a dendritic pattern and improving the bonding strength between the water-cooling plate and the battery module. It also improves the airtightness of the battery pack 20.

[0042] Meanwhile, the counterweight 12 can be adjusted in terms of parameters (weight) according to different usage scenarios and conditions, thereby adapting to the pressing requirements of different battery packs 20, increasing the applicability of the pressing fixture 10 and expanding its application range.

[0043] Furthermore, such as Figures 2-5 As shown, the counterweight 12 is connected to the counterweight bracket 11, thereby preventing the counterweight 12 from moving within the counterweight bracket 11 and affecting the clamping effect of the clamping plate assembly 1 on the battery pack 20. For example, in this invention, the counterweight 12 is connected to the bottom wall of the counterweight groove 111 by fasteners such as threaded parts. However, this invention is not limited to this; the counterweight 12 can also be connected to the counterweight bracket 11 by snap-fit ​​or other means.

[0044] In some embodiments of this utility model, such as Figures 2-5 As shown, the battery pack 20 includes multiple battery modules (not shown), spaced apart from each other, multiple counterweights 12 corresponding to each of the multiple battery modules, and multiple counterweight slots 111 corresponding to each of the multiple battery modules. It can be understood that the multiple battery modules and the multiple counterweights 12 are arranged opposite to each other in the thickness direction of the pressure plate assembly 1, thereby better pressing the battery modules and the water-cooling plate.

[0045] For example in Figures 2-5 In the example shown, there are 4 battery modules arranged in a matrix, 4 counterweights 12, and 4 counterweight slots 111. However, this invention is not limited to these. The number of battery modules, counterweights 12, and counterweight slots 111 can be other numbers, such as 2, 3, 5, or 6.

[0046] In some embodiments of this utility model, such as Figures 2-4 As shown, a positioning block 13 is connected to the peripheral wall of the clamping plate assembly 1, and the positioning block 13 bends and extends toward the battery pack 20. This restricts the movement of the clamping plate assembly 1 and the battery pack 20 in a plane perpendicular to the thickness direction of the clamping plate assembly 1, thereby further ensuring the clamping effect of the clamping plate assembly 1 on the battery pack 20.

[0047] In some embodiments of this utility model, such as Figures 2-4 As shown, the positioning blocks 13 are multiple blocks spaced apart along the circumferential direction of the pressing plate assembly 1; thereby, the movement of the pressing plate assembly 1 and the battery pack 20 in a plane perpendicular to the thickness direction of the pressing plate assembly 1 is further restricted, thereby further ensuring the pressing effect of the pressing plate assembly 1 on the battery pack 20.

[0048] For example in Figures 2-4In the example shown, there are 8 positioning blocks 13 spaced apart along the circumferential direction of the clamping plate assembly 1. However, the present invention is not limited to this. The positioning blocks 13 can also be other numbers, such as 4, 5, 10 or 12.

[0049] In some embodiments of this utility model, such as Figures 2-4 As shown, the positioning block 13 is detachably mounted on the clamping plate assembly 1, and the position of the positioning block 13 in the circumferential direction of the clamping plate assembly 1 is adjustable. This allows the clamping plate assembly 1 to adapt to different battery packs 20, increasing the applicability of the clamping fixture 10.

[0050] For example in Figures 2-4 In the example shown, the positioning block 13 is connected to the pressure plate assembly 1 by fasteners, so that the positioning block 13 is detachably mounted on the pressure plate assembly 1. The peripheral wall of the pressure plate assembly 1 has a plurality of fastening holes spaced apart along the circumferential direction of the pressure plate assembly 1, so that the position of the positioning block 13 in the circumferential direction of the pressure plate assembly 1 is adjustable.

[0051] In some embodiments of this utility model, such as Figures 2-4 As shown, a limiting block 14 is connected to the end face of the clamping plate assembly 1 facing away from the battery pack 20. The limiting block 14 is located at the edge of the clamping plate assembly 1. It can be understood that the position of the edge of the clamping plate assembly 1 corresponds to the position of the beam of the battery pack 20. The setting of the limiting block 14 can prevent the pressure rod 3 from being located at the edge of the clamping plate assembly 1, so that the position of the pressure rod 3 can be located at the position of the water cooling plate and the battery module, thereby allowing the pressure rod 3 to better clamp the water cooling plate and the battery module.

[0052] In some embodiments of this utility model, such as Figures 2-4 As shown, the limiting blocks 14 are multiple blocks spaced apart along the circumferential direction of the pressing plate assembly 1. This better prevents the pressure rod 3 from being located at the edge of the pressing plate assembly 1, allowing the pressure rod 3 to be positioned at the location of the water-cooling plate and the battery module, thus enabling the pressure rod 3 to better press the water-cooling plate and the battery module.

[0053] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, clamping devices 2 are provided at both ends of the pressure rod 3 along its length; thus, the clamping devices 2 can clamp both ends of the pressure rod 3 along its length, preventing one end of the pressure rod 3 from tilting upwards, thereby improving the clamping effect of the pressure rod 3 on the pressure plate assembly 1.

[0054] In some embodiments of this utility model, such as Figure 1 and Figure 2As shown, a lifting ring 15 is connected to the end of the clamping plate assembly 1 that is away from the battery pack 20; thus, the clamping plate assembly 1 can be hoisted, which facilitates the disassembly, assembly and transportation of the clamping plate assembly 1.

[0055] In some embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 4 As shown, the end of the clamping plate assembly 1 facing the battery pack 20 has a soft pad 16; thereby, damage to the top of the battery pack 20 by the clamping plate assembly 1 can be reduced. Furthermore, the soft pad 16 and the clamping plate assembly 1 can be integrated by means of heat pressing, adhesive bonding, etc.

[0056] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the pressure rods 3 are multiple spaced apart. It should be noted that the pressure rods 3 are along the first direction (e.g., Figure 2 If the compression rod 3 extends along the second direction (as shown in direction a), then the compression rod 3 extends along the second direction (as shown in direction a). Figure 2 The multiple directions (b-direction shown) are spaced apart, with the first direction, the second direction, and the thickness direction of the clamping plate assembly 1 being perpendicular to each other.

[0057] This improves the clamping effect on the clamping plate assembly 1, further enabling the water-cooling plate inside the battery pack 20 to press firmly against the battery module, preventing the adhesive between the water-cooling plate and the battery module from forming a dendritic pattern, and improving the bonding strength between the water-cooling plate and the battery module. After the adhesive between the water-cooling plate and the battery module has cured, the fixture can be removed, allowing for repeated use of the fixture. Simultaneously, it also further improves the airtightness of the clamping of the battery pack 20.

[0058] For example in Figure 1 and Figure 2 In the example shown, there are two pressure rods 3, but the present invention is not limited to this. There can be more pressure rods 3, such as 3, 4, 5 or 6.

[0059] Furthermore, such as Figure 1 and Figure 2 As shown, a limiting block 14 is connected to the end face of the clamping plate assembly 1 away from the battery pack 20. The limiting block 14 is located at the edge of the clamping plate assembly 1 and between two adjacent pressure rods 3. This can prevent the distance between two adjacent pressure rods 3 from being too close, thereby avoiding pressure concentration and preventing the battery pack 20 from being crushed.

[0060] In some embodiments of this utility model, such as Figure 1 , Figure 2 and Figures 6-8As shown, the battery pack 20 has a mating part (not shown), the clamping device 2 is C-shaped, the pressure plate assembly 1, the pressure rod 3 and the mating part are all located in the C-shaped opening 21 of the clamping device 2, one end of the clamping device 2 is connected to the pressure rod 3 and the other end is connected to the mating part.

[0061] It is understandable that the clamping plate assembly 1, the pressure rod 3, and the mating part are all located in the C-shaped opening 21 of the clamping device 2, which can prevent the clamping plate assembly 1, the pressure rod 3, and the mating part from moving in the thickness direction of the clamping plate assembly 1, thereby ensuring the clamping effect of the clamping device 2 on the clamping plate assembly 1, the pressure rod 3, and the mating part.

[0062] Among them, such as Figure 7 and Figure 8 As shown, the clamping device 2 includes a first segment 24, a second segment 25, and a third segment 26. The first segment 24 and the third segment 26 are respectively connected to the same end of the second segment 25 in the thickness direction and extend away from the second segment 25. The first segment 24 is connected to the pressure rod 3, and the third segment 26 is connected to the mating part. The first segment 24, the second segment 25, and the third segment 26 form a C-shaped opening 21 facing each other, thereby making the clamping device 2 C-shaped.

[0063] In some embodiments of this utility model, such as Figures 6-8 As shown, the clamping device 2 and the pressure rod 3 are connected by bolts 22; wherein, the axis of the bolt 22 extends along the thickness direction of the pressure plate assembly 1, the pressure rod 3 has a connecting part 31, the bolt 22 passes through the first section 24 and is connected to the connecting part 31, as the bolt 22 is tightened, the first section 24 and the pressure rod 3 are pressed together, thereby realizing the pressing of the pressure rod 3 and the pressure plate assembly 1.

[0064] In some embodiments of this utility model, such as Figure 7 and Figure 8 As shown, one end of the clamping device 2 has a positioning post 231, and the mating part has a positioning hole (not shown) that mates with the positioning post 231. It can be understood that the third section 26 of the clamping device 2 is connected to the positioning part 23, and the side of the positioning part 23 facing the first section 24 has the positioning post 231, thereby realizing the connection between the clamping device 2 and the mating part.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A clamping fixture, characterized in that, Suitable for placement on top of the battery pack for clamping the battery pack, the clamping fixture includes: A clamping plate assembly, wherein the clamping plate assembly is disposed on the top of the battery pack; A pressure bar is located at one end of the clamping plate assembly opposite to the battery pack; A clamping device for clamping the pressure rod and the battery pack.

2. The clamping fixture according to claim 1, characterized in that, The clamping plate assembly includes: A counterweight bracket is provided on the top of the battery pack, and the side of the counterweight bracket opposite to the battery pack has a counterweight groove. A counterweight block, the counterweight block being adapted to be disposed in the counterweight groove.

3. The clamping fixture according to claim 2, characterized in that, The battery pack includes battery modules, which are spaced apart. The counterweights are multiple units corresponding to the battery modules, and the counterweight slots are multiple units corresponding to the battery modules.

4. The clamping fixture according to claim 1, characterized in that, A positioning block is connected to the peripheral wall of the clamping plate assembly, and the positioning block bends and extends toward the battery pack.

5. The clamping fixture according to claim 4, characterized in that, The positioning blocks are a plurality of blocks spaced apart along the circumferential direction of the clamping plate assembly; And / or, the positioning block is detachably disposed on the pressure plate assembly, and the position of the positioning block in the circumferential direction of the pressure plate assembly is adjustable.

6. The clamping fixture according to claim 1, characterized in that, A limiting block is connected to the end face of the clamping plate assembly facing away from the battery pack, and the limiting block is located at the edge of the clamping plate assembly.

7. The clamping fixture according to claim 6, characterized in that, The limiting blocks are a plurality of blocks spaced apart along the circumferential direction of the clamping plate assembly.

8. The clamping fixture according to claim 1, characterized in that, The clamping device is provided at both ends of the pressure rod along its length. And / or, a lifting ring is connected to the end of the clamping plate assembly facing away from the battery pack; And / or, the end of the clamping plate assembly facing the battery pack has a pad; And / or, the pressure bars are a plurality of spaced-apart bars.

9. The clamping fixture according to claim 1, characterized in that, The battery pack has a mating part, the clamping device is C-shaped, the pressure plate assembly, the pressure rod and the mating part are all located in the C-shaped opening of the clamping device, one end of the clamping device is connected to the pressure rod and the other end is connected to the mating part.

10. The clamping fixture according to claim 9, characterized in that, The clamping device is connected to the pressure rod by bolts; And / or, one end of the clamping device has a positioning post, and the mating part has a positioning hole that mates with the positioning post.

Images