Soft package battery cell support and battery module

Abstract

The utility model discloses a soft package battery cell support which comprises a first support body and a second support body which are spliced with each other, the first support body and the second support body are both in a U shape, the first support body comprises a first bottom plate and two first side plates arranged at the two ends of the first bottom plate respectively, and a plurality of first butt joint cantilevers arranged at intervals are arranged on the first side plates. The second support comprises a second bottom plate and two second side plates arranged at the two ends of the second bottom plate respectively, a plurality of second butt-joint cantilevers arranged at intervals are arranged on the second side plates, and the first butt-joint cantilevers and the second butt-joint cantilevers are arranged in a one-to-one correspondence mode and spliced and connected to form a plurality of connecting arms. And a leading-out gap for leading out a battery cell tab is formed between every two adjacent connecting arms. According to the utility model, the first bracket and the second bracket which are spliced and connected with each other are arranged, so that a plurality of soft package battery cells can be simultaneously mounted, and the space is effectively saved; in addition, the device only comprises the first bracket and the second bracket, so that the material types are few, and the installation is simple.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to a soft-pack battery cell support and battery module. Background Technology

[0002] Soft-pack lithium-ion batteries have gained popularity among power battery manufacturers due to their advantages such as good safety performance, light weight, and flexible design. To meet the requirements of equipment, multiple soft-pack batteries usually need to be assembled in series or parallel. Currently, it is common to use a cell bracket to fix one battery, and then stack multiple cell brackets, which takes up a lot of space and is complicated to install. Summary of the Invention

[0003] The purpose of this utility model is to provide a soft-pack battery cell bracket and battery module to solve the problems of complex installation and large space occupation of existing soft-pack battery cell brackets.

[0004] To achieve the above objectives, this utility model provides a soft-pack battery cell support, comprising a first support and a second support that are assembled together. Both the first support and the second support are U-shaped. The first support includes a first base plate and two first side plates respectively disposed at both ends of the first base plate. The first side plates are provided with a plurality of spaced-apart first docking cantilever arms. The second support includes a second base plate and two second side plates respectively disposed at both ends of the second base plate. The second side plates are provided with a plurality of spaced-apart second docking cantilever arms. The plurality of first docking cantilever arms and the plurality of second docking cantilever arms are arranged in a one-to-one correspondence and are assembled and connected to each other to form a plurality of connecting arms. A lead-out gap is formed between two adjacent connecting arms for leading out the electrode tabs of the battery cell.

[0005] Preferably, at least two of the first docking cantilever arms have extensions extending along their length, and each extension has a locking protrusion. At least two of the second docking cantilever arms have bends corresponding to the extensions, and each bend has a locking groove corresponding to the locking protrusion. The locking groove engages with the locking protrusion.

[0006] Preferably, one of the first docking cantilever arms located in the middle is provided with a first locking part, the first locking part extends along the length direction of the first docking cantilever arm and has a through first locking hole, and one of the second docking cantilever arms located in the middle is provided with a second locking part, the second locking part extends along the length direction of the second docking cantilever arm and has a through second locking hole, the first locking hole and the second locking hole are correspondingly arranged, and a connecting screw passes through the first locking hole and the second locking hole.

[0007] Preferably, one of the first docking cantilever arms located in the middle of the plurality of first docking cantilever arms is provided with a first locking part, the first locking part extending along the length direction of the first docking cantilever arm and having a through first locking hole; one of the second docking cantilever arms located in the middle of the plurality of second docking cantilever arms is provided with a second locking part, the second locking part extending along the length direction of the second docking cantilever arm and having a through second locking hole; the first locking hole and the second locking hole are correspondingly arranged, and a connecting screw passes through the first locking hole and the second locking hole; at least two of the other first docking cantilever arms, excluding the first docking cantilever arm with the first locking part, have extensions extending along their length direction, each extension having a locking protrusion; at least two of the other second docking cantilever arms, excluding the second docking cantilever arm with the second locking part, have bends corresponding to the extensions, the bends having grooves corresponding to the locking protrusions, the grooves engaging with the locking protrusions.

[0008] Preferably, one of the first locking hole and the second locking hole has a positioning protrusion at the mating position, and the other has a positioning groove corresponding to the positioning protrusion at the mating position.

[0009] Preferably, on the two first docking cantilever arms disposed opposite to each other on the two first side plates, a first connecting boss extends outward in a direction away from each other, and a first connecting hole is formed in the first connecting boss. On the two second docking cantilever arms disposed opposite to each other on the two second side plates, a second connecting boss extends outward in a direction away from each other, and a second connecting hole is formed in the second connecting boss.

[0010] Preferably, the first base plate or the second base plate is provided with a plurality of positioning bosses and a plurality of positioning holes, and the soft-pack battery cell bracket is at least two sets, wherein the positioning bosses and positioning holes in two adjacent sets of the soft-pack battery cell bracket are correspondingly fitted and connected.

[0011] Preferably, a plurality of positioning holes are arranged sequentially along the length direction of the first base plate or the second base plate, and a plurality of positioning grooves are arranged sequentially along the length direction of the first base plate or the second base plate, with the positioning grooves located directly above or directly below the positioning holes.

[0012] This utility model also provides a battery module, including multiple pouch cells and the aforementioned pouch cell support, wherein the multiple pouch cells are stacked, and the first support and the second support cover the pouch cells from both sides.

[0013] Preferably, two adjacent pouch cells are connected by barley paper.

[0014] Compared with the prior art, this utility model sets up a first bracket and a second bracket that are connected to each other and form a number of lead-out gaps for leading out the battery cell tabs, so that multiple pouch cells can be installed at the same time. Multiple pouch cells can be installed by assembling the first bracket and the second bracket only once, which effectively saves space. In addition, this utility model only includes the first bracket and the second bracket, with fewer types of materials and simple installation. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the soft-pack battery cell support and the stacked soft-pack battery cells after assembly, according to an embodiment of this utility model.

[0016] Figure 2 for Figure 1 The decomposed structure diagram.

[0017] Figure 3 This is a structural diagram of the soft-pack battery cell support according to an embodiment of the present invention.

[0018] Figure 4 This is a structural diagram of the assembled two sets of soft-pack battery cell brackets in an embodiment of this utility model.

[0019] Figure 5 This is a structural diagram of the two sets of soft-pack battery cell brackets after the protection plates are installed in an embodiment of this utility model. Detailed Implementation

[0020] To explain in detail the technical content, structural features, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0021] like Figures 1 to 5As shown, this utility model provides a soft-pack battery cell support 10, including a first support 1 and a second support 2 that are spliced ​​together. Both the first support 1 and the second support 2 are U-shaped. The first support 1 includes a first base plate 11 and two first side plates 12 respectively disposed at both ends of the first base plate 11. The first side plates 12 are provided with a plurality of spaced first docking cantilever arms 13. The second support 2 includes a second base plate 21 and two second side plates 22 respectively disposed at both ends of the second base plate 21. The second side plates 22 are provided with a plurality of spaced second docking cantilever arms 23. The plurality of first docking cantilever arms 13 and the plurality of second docking cantilever arms 23 are arranged one-to-one and spliced ​​together to form a plurality of connecting arms 110. A lead-out gap 120 is formed between two adjacent connecting arms 110 for leading out the tabs 31 of the battery cell 3. Specifically, when using the soft-pack battery cell bracket 10, multiple battery cells 3 need to be stacked together first, and then the corresponding first bracket 1 and the corresponding second bracket 2 are spliced ​​and connected from both sides of the soft-pack battery cell 3 to cover the soft-pack battery cell 3. Therefore, in this embodiment of the utility model, multiple soft-pack battery cells 3 can be installed by assembling the first bracket 1 and the second bracket 2 only once, without the need to assemble a bracket for each soft-pack battery cell 3, making the installation more convenient.

[0022] This embodiment of the utility model sets up a first bracket 1 and a second bracket 2 that are connected to each other and form a plurality of lead-out gaps 120 for leading out the tabs 31 of the battery cells 3. This allows multiple soft-pack battery cells 3 to be installed at the same time. Multiple soft-pack battery cells 3 can be installed by assembling the first bracket 1 and the second bracket 2 only once, which effectively saves space. In addition, this embodiment of the utility model only includes the first bracket 1 and the second bracket 2, which reduces the types of materials and simplifies the installation.

[0023] In this embodiment of the utility model, such as Figures 1 to 3As shown, a first locking part 15 is provided on one of the first docking cantilever 13 located in the middle of the plurality of first docking cantilever 13. The first locking part 15 extends along the length direction of the first docking cantilever 13 and has a through first locking hole. A second locking part 25 is provided on one of the second docking cantilever 23 located in the middle of the plurality of second docking cantilever 23. The second locking part 25 extends along the length direction of the second docking cantilever 23 and has a through second locking hole 251. The first locking hole and the second locking hole 251 are correspondingly arranged and pass through each other. A connecting screw is provided; among a plurality of first docking cantilever arms 13, except for the first docking cantilever arm 13 with a first locking part 15, at least two of the other first docking cantilever arms 13 extend in their length direction with an extension 14, each extension 14 having a locking protrusion 141; among a plurality of second docking cantilever arms 23, except for the second docking cantilever arm 23 with a second locking part 25, at least two of the other second docking cantilever arms 23 have a bending part 24 corresponding to the extension 14, the bending part 24 having a locking groove 241 corresponding to the locking protrusion 141, the locking groove 241 engaging with the locking protrusion 141. Specifically, at least two extensions 14 are evenly arranged in the arrangement direction of a plurality of first docking cantilever arms 13. One of the first locking holes and the second locking holes 251 is provided with a positioning protrusion 252 at the docking position, and the other is provided with a positioning groove corresponding to the positioning protrusion 252 at the docking position, thereby aligning and connecting the first locking holes and the second locking holes 251. In this embodiment of the utility model, the first bracket 1 and the second bracket 2 are connected by engaging the protrusion 141 and the groove 241, and the first locking holes and the second locking holes 251 are further connected by connecting screws, which further ensures the stable connection of the first bracket 1 and the second bracket 2, with good connection effect and compact and simple structure.

[0024] In some other specific embodiments of this utility model, such as Figures 1 to 3 As shown, at least two of the first docking cantilever arms 13 extend in their length direction with extension portions 14, and each extension portion 14 is provided with a locking protrusion 141. At least two of the second docking cantilever arms 23 are provided with bending portions 24 corresponding to the extension portions 14. The bending portions 24 are provided with locking grooves 241 corresponding to the locking protrusions 141. The locking grooves 241 are engaged with the locking protrusions 141. That is, the assembly connection of the first bracket 1 and the second bracket 2 can be achieved by only engaging at least two locking protrusions 141 and at least two locking grooves 241.

[0025] In other specific embodiments of this utility model, such as Figures 1 to 3As shown, a first locking part 15 is provided on one of the first docking cantilever 13 located in the middle of the plurality of first docking cantilever 13. The first locking part 15 extends along the length direction of the first docking cantilever 13 and has a through first locking hole. A second locking part 25 is provided on one of the second docking cantilever 23 located in the middle of the plurality of second docking cantilever 23. The second locking part 25 extends along the length direction of the second docking cantilever 23 and has a through second locking hole 251. The first locking hole and the second locking hole 251 are correspondingly arranged and a connecting screw passes through the first locking hole and the second locking hole 251. That is, the connection between the first bracket 1 and the second bracket 2 can be realized by connecting the first locking hole and the second locking hole 251 with the connecting screw.

[0026] In this embodiment of the utility model, such as Figures 2 to 5 As shown, on the two first side plates 12, two first docking cantilever arms 13, which are arranged opposite each other, extend outwards in a direction away from each other, with first connecting bosses having first connecting holes 16. On the two second side plates 22, two second docking cantilever arms 23, which are arranged opposite each other, extend outwards in a direction away from each other, with second connecting bosses having second connecting holes 26. Specifically, there can be multiple first connecting bosses and second connecting bosses. Multiple first connecting bosses are distributed on multiple first docking cantilever arms 13, and multiple second connecting bosses are distributed on multiple second docking cantilever arms 23. The protrusion height of the multiple first connecting bosses and the multiple second bosses is the same and they are evenly arranged to connect the protective plate 4 through the first connecting holes 16 and the second connecting holes 26.

[0027] In this embodiment of the utility model, such as Figures 2 to 4 As shown, the second base plate 21 is provided with a plurality of positioning protrusions 27 and a plurality of positioning holes 28. There are at least two sets of soft-pack battery cell brackets 10, and the positioning protrusions 27 and positioning holes 28 in adjacent sets of soft-pack battery cell brackets 10 are correspondingly fitted and connected. Specifically, the plurality of positioning holes 28 are arranged sequentially along the length direction of the second base plate 21, and the plurality of positioning protrusions 27 are arranged sequentially along the length direction of the second base plate 21, with the positioning protrusions 27 located directly above or directly below the positioning holes 28. Specifically, there are three positioning protrusions 27 and three positioning holes 28. Figure 4 As shown, when assembling the two sets of soft-pack battery cell brackets 10, the positioning hole 28 of the second base plate 21 on one set of soft-pack battery cell brackets 10 is located at the top, and the second base plate 21 of the other set of soft-pack battery cell brackets 10 is rotated 180 degrees so that the positioning boss 27 is located at the top. This achieves that the positioning hole 28 of the second base plate 21 on one set of soft-pack battery cell brackets 10 corresponds to and is fitted with the positioning boss 27 of the second base plate 21 on the other set of soft-pack battery cell brackets 10. The soft-pack battery cell brackets 10 are easy to assemble, and the soft-pack battery cell brackets 10 are highly versatile, without the need for multiple types of materials. The design is very ingenious.

[0028] It should be noted that the positioning holes 28 can also be arranged sequentially along the length of the first base plate 11, and the positioning holes 28 can be arranged sequentially along the length of the first base plate 11 with the positioning holes 28 located directly above or directly below the positioning holes 28. The specific design can be flexibly adjusted according to actual needs.

[0029] like Figures 1 to 5 As shown, this utility model also provides a battery module, including multiple soft-pack cells 3 and the aforementioned soft-pack cell support 10. The multiple soft-pack cells 3 are stacked, and the first support 1 and the second support 2 cover the soft-pack cells 3 from both sides. Specifically, adjacent soft-pack cells 3 are connected by barley paper, which provides good insulation and is easy to bond. After the stacked soft-pack cells 3 are connected by the soft-pack cell support 10, the tabs 31 of the soft-pack cells 3 are protected by the protective plate 4. The tabs 31 specifically include a positive tab 311 and a negative tab 312. By connecting the positive tab 311 and the negative tab 312, the soft-pack cells 3 can be connected in series or in parallel to form a battery module. The battery module of this utility model has a simple structure, is easy to install, and has few material types, and the design is very ingenious.

[0030] The above-disclosed examples are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model application shall still fall within the scope of the present utility model.

Claims

1. A soft pack battery cell holder, characterized by, The device includes a first support and a second support that are assembled together. Both the first support and the second support are U-shaped. The first support includes a first base plate and two first side plates respectively disposed at both ends of the first base plate. The first side plates are provided with a plurality of spaced-apart first docking cantilever arms. The second support includes a second base plate and two second side plates respectively disposed at both ends of the second base plate. The second side plates are provided with a plurality of spaced-apart second docking cantilever arms. The plurality of first docking cantilever arms and the plurality of second docking cantilever arms are arranged in a one-to-one correspondence and are assembled and connected to each other to form a plurality of connecting arms. A lead-out gap is formed between two adjacent connecting arms for leading out the electrode tabs of the battery cell.

2. The soft-pack battery cell holder of claim 1, wherein, At least two of the first docking cantilever arms have extensions extending along their length, and each extension has a locking protrusion. At least two of the second docking cantilever arms have bends corresponding to the extensions, and each bend has a locking groove corresponding to the locking protrusion. The locking groove engages with the locking protrusion.

3. The jelly-roll holder of claim 1, wherein, A first locking part is provided on one of the first docking cantilever arms located in the middle of the plurality of first docking cantilever arms. The first locking part extends along the length direction of the first docking cantilever arm and has a through first locking hole. A second locking part is provided on one of the second docking cantilever arms located in the middle of the plurality of second docking cantilever arms. The second locking part extends along the length direction of the second docking cantilever arm and has a through second locking hole. The first locking hole and the second locking hole are correspondingly arranged, and a connecting screw passes through the first locking hole and the second locking hole.

4. The jelly-roll holder of claim 1, wherein, A first locking part is provided on one of the first docking cantilever arms located in the middle of the plurality of first docking cantilever arms. The first locking part extends along the length direction of the first docking cantilever arm and has a through first locking hole. A second locking part is provided on one of the second docking cantilever arms located in the middle of the plurality of second docking cantilever arms. The second locking part extends along the length direction of the second docking cantilever arm and has a through second locking hole. The first locking hole and the second locking hole are correspondingly arranged, and a connecting screw passes through the first locking hole and the second locking hole. At least two of the other first docking cantilever arms, excluding the first docking cantilever arm with the first locking part, have extensions extending along their length direction. Each extension has a locking protrusion. At least two of the other second docking cantilever arms, excluding the second docking cantilever arm with the second locking part, have bends corresponding to the extensions. The bends have locking grooves corresponding to the locking protrusions. The locking grooves engage with the locking protrusions.

5. The jelly-roll holder of claim 3 or 4, wherein One of the first locking hole and the second locking hole has a positioning protrusion at the mating position, and the other has a positioning groove corresponding to the positioning protrusion at the mating position.

6. The jelly-roll holder of claim 1, wherein, On the two first docking cantilever arms disposed opposite to each other on the two first side plates, a first connecting boss extends outward in a direction away from each other, and a first connecting hole is formed in the first connecting boss. On the two second docking cantilever arms disposed opposite to each other on the two second side plates, a second connecting boss extends outward in a direction away from each other, and a second connecting hole is formed in the second connecting boss.

7. The jelly-roll holder of claim 5, wherein The first base plate or the second base plate is provided with a plurality of positioning bosses and a plurality of positioning holes. The soft-pack battery cell bracket is at least two sets, and the positioning bosses and positioning holes in two adjacent sets of the soft-pack battery cell bracket are correspondingly fitted and connected.

8. The jelly-roll holder of claim 7, wherein, A plurality of positioning holes are arranged sequentially along the length of the first base plate or the second base plate, and a plurality of positioning grooves are arranged sequentially along the length of the first base plate or the second base plate, with the positioning grooves located directly above or directly below the positioning holes.

9. A battery module, characterized by It includes a plurality of pouch cells and a pouch cell support as described in any one of claims 1 to 8, wherein the plurality of pouch cells are stacked, and the first support and the second support cover the pouch cells from both sides.

10. The battery module of claim 9, wherein, The adjacent two pouch cells are connected by barley paper.

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