Battery pack structure and battery pack

Abstract

The utility model provides a battery pack structure and battery pack, the battery pack structure includes setting frame, liquid cooling subassembly, battery cell and colloid, setting frame has setting groove, liquid cooling subassembly is provided inside setting groove and with setting groove inner peripheral wall butt joint limit, liquid cooling subassembly has a plurality of mounting channel, battery cell is installed inside mounting channel, the colloid is equipped with the setting groove. The colloid is filled between the battery cells and the mounting channel and / or in a filling gap between every two adjacent battery cells, the liquid cooling assembly, the colloid and the battery cells form a battery cell assembly, and the battery cell assembly is detachably arranged in the shaping frame. The battery pack structure and the battery pack provided by the utility model can solve the problems of poor stability and low space utilization rate of the battery pack in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field related to batteries, and in particular to a battery pack structure and a battery package. Background Art

[0002] With the technological development of the new energy industry, the structural settings of battery packs are constantly being updated. At present, the output of high-power battery packs requires the coordinated output of multiple battery packs to achieve the predetermined power. The main form is to connect multiple independent small battery modules in series to output electricity. Multiple battery modules are connected to form a battery pack that outputs electricity as a whole. Due to stress concentration, it is easy to break at the connection, resulting in poor overall stability. In addition, the battery pack formed by connecting multiple battery modules also has multiple battery module frames occupying space, resulting in low internal space utilization of the battery pack. Utility Model Content

[0003] The main purpose of the utility model is to provide a battery pack structure and a battery pack to solve the problems of poor stability and low space utilization of the battery pack in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a battery pack structure is provided, the battery pack structure includes a forming frame, a liquid cooling component, a battery cell and a colloid, the forming frame has a forming groove, the liquid cooling component is arranged inside the forming groove and abuts against the inner wall of the forming groove for limiting position, the liquid cooling component has a plurality of installation channels, the battery cell is installed inside the installation channel, the colloid is filled in the filling gap between the battery cell and the installation channel and / or between two adjacent battery cells, the liquid cooling component, the colloid and the battery cell form a battery cell assembly, and the battery cell assembly is detachably arranged inside the forming frame.

[0005] Furthermore, the liquid cooling component includes a liquid inlet plate and a liquid outlet plate arranged at intervals along a first direction, the liquid inlet plate and the liquid outlet plate are respectively abutted against the inner wall surface of the shaping groove; a flow plate, the flow plate is arranged between the liquid inlet plate and the liquid outlet plate, and the flow channel inside the flow plate connects the liquid inlet channel inside the liquid inlet plate and the liquid outlet channel inside the liquid outlet plate, a plurality of flow plates are arranged, and the plurality of flow plates are spaced apart along a second direction perpendicular to the first direction, and an installation channel is formed between two adjacent flow plates.

[0006] Furthermore, the four corners of the shaping frame are provided with convex parts, the convex parts have limiting cavities communicated with the shaping grooves, and the two ends of the liquid inlet plate and the liquid outlet plate extend into the interior of the limiting cavities along the second direction respectively.

[0007] Furthermore, one of the outer protrusions has a first through hole, and the other outer protrusion has a second through hole. The liquid cooling component also includes a liquid inlet nozzle, which is arranged on the liquid inlet plate, and at least a portion of the liquid inlet nozzle passes through the first through hole and extends out of the molding groove; a liquid outlet nozzle, which is arranged on the liquid outlet plate, and at least a portion of the liquid outlet nozzle passes through the second through hole and extends out of the molding groove.

[0008] Furthermore, the large surface of the battery cell is arranged opposite to the current plate.

[0009] Furthermore, the inner wall surface of the calibrating frame has an anti-adhesion coating.

[0010] Furthermore, the filling gap between the battery cell and the mounting channel and the filling gap between the battery cells are arranged to be connected.

[0011] Furthermore, limited rubber strips are provided on the side surfaces and large surfaces of the battery cells to form filling gaps between the battery cells and between the battery cells and the installation channels.

[0012] According to another aspect of the utility model, a battery pack is provided, which includes a cell assembly, which is obtained by removing the forming frame from the above-mentioned battery pack structure; a box body, the cell assembly is installed inside the box body, and a connector is arranged between the outer wall surface of the cell assembly and the inner wall surface of the box body.

[0013] Furthermore, the connecting piece is a structural colloid, and the connecting piece is used to bond the battery cell assembly to the box body.

[0014] By applying the technical solution of the utility model, the battery pack structure includes a forming frame, a liquid cooling component, a battery cell and a colloid, the forming frame has a forming groove, the liquid cooling component is arranged inside the forming groove and abuts against the inner wall of the forming groove for limiting position, the liquid cooling component has multiple installation channels, the battery cell is installed inside the installation channel, the colloid is filled between the battery cell and the installation channel and / or between two adjacent battery cells, the liquid cooling component, the colloid and the battery cell form a battery cell assembly, and the battery cell assembly is detachably arranged inside the forming groove.

[0015] It can be seen from the above that the above embodiments of the utility model achieve the following technical effects:

[0016] 1. By forming a cell assembly with a liquid cooling assembly, a colloid and a cell group, multiple components are combined into a whole, and the setting of additional shells such as the external frame of the module (end plate, side plate, or end plate, strap, etc.) is reduced, thereby improving the overall space utilization.

[0017] 2. The cell assembly formed by the liquid cooling assembly, the colloid and the cell is detachably arranged inside the shaping frame. On the one hand, the shaping frame can limit the grouping of the cell assembly, and on the other hand, the shaping frame can be removed and reused, thereby reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 An exploded view of the battery pack structure of the utility model;

[0020] Figure 2 A structural schematic diagram of a shaping frame of the utility model;

[0021] Figure 3 for Figure 2 A magnified view of part A;

[0022] Figure 4 It is a structural schematic diagram of the battery core assembly of the utility model;

[0023] Figure 5 for Figure 4 Enlarged view of part B.

[0024] The above drawings include the following reference numerals:

[0025] 1. Forming frame; 101. Forming groove; 11. External protrusion; 12. Limiting cavity; 2. Liquid cooling component; 201. Installation channel; 21. Liquid inlet plate; 22. Liquid outlet plate; 23. Flow plate; 24. Liquid inlet nozzle; 25. Liquid outlet nozzle; 3. Battery cell; 4. Colloid; 5. Anti-adhesive coating; 6. Box; 7. Structural colloid. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0029] Embodiment 1

[0030] In order to solve the problems of poor stability and low space utilization of battery packs in the prior art, this embodiment provides a battery pack structure.

[0031] like Figures 1 to 5 As shown, the battery pack structure includes a shaping frame 1, a liquid cooling component 2, a battery cell 3 and a colloid 4. The shaping frame 1 has a shaping groove 101. The liquid cooling component 2 is arranged inside the shaping groove 101 and abuts against the inner wall of the shaping groove 101 for limiting position. The liquid cooling component 2 has a plurality of mounting channels 201. The battery cell 3 is mounted inside the mounting channel 201. The colloid 4 is filled in the filling gap between the battery cell 3 and the mounting channel 201 and / or between two adjacent battery cells 3. The liquid cooling component 2, the colloid 4 and the battery cell 3 form a battery cell assembly, and the battery cell assembly is detachably arranged inside the shaping frame 1.

[0032] Specifically, by assembling the liquid cooling assembly 2, the colloid 4 and the battery cell 3 into a battery cell assembly, multiple parts are assembled into a whole, and the setting of additional shells is reduced, thereby improving the overall space utilization. At the same time, the battery cell assembly is detachably arranged inside the shaping frame 1, so that the shaping frame 1 can be used repeatedly, thereby reducing costs.

[0033] Among them, when there is a filling gap between the battery cell 3 and the installation channel 201, the colloid 4 can flow and fill the inside of the filling gap when injected, so as to realize the connection between the outer surface of the battery cell 3 and the installation channel 201 through the colloid 4. Furthermore, the colloid 4 is a thermally conductive colloid, so that the colloid 4 has the effect of fixing and conducting heat, which is beneficial to improving the stability of the connection between the liquid cooling component 2 and the battery cell 3, and is also beneficial to the cooling efficiency of the liquid cooling component on the battery cell 3.

[0034] Furthermore, when a plurality of battery cells 3 are arranged inside the same installation channel 201, the plurality of battery cells 3 are arranged along the second direction, and there are filling gaps between the battery cells 3. When the colloid 4 is injected, it can fill the filling gaps between the battery cells 3, thereby achieving the plurality of battery cells 3 being fixed together and fixed to the liquid cooling component 2 through the colloid 4, thereby achieving the fixation of the plurality of battery cells 3 and the fixation of the battery cells 3 to the liquid cooling component 2 without adding an additional fixing structure.

[0035] In this embodiment, the liquid cooling component 2 includes a liquid inlet plate 21, a liquid outlet plate 22 and a flow plate 23. The liquid inlet plate 21 and the liquid outlet plate 22 are arranged at intervals along the first direction, and the liquid inlet plate 21 and the liquid outlet plate 22 are respectively abutted against the inner wall surface of the shaping groove 101. The flow plate 23 is arranged between the liquid inlet plate 21 and the liquid outlet plate 22, and the flow channel inside the flow plate 23 connects the liquid inlet channel inside the liquid inlet plate 21 and the liquid outlet channel inside the liquid outlet plate 22. A plurality of flow plates 23 are arranged, and the plurality of flow plates 23 are arranged at intervals along a second direction perpendicular to the first direction.

[0036] in, Figure 1 The X direction in is the first direction. Figure 1 The Y direction in is the second direction.

[0037] Specifically, the present application adopts the arrangement of multiple current overflow plates 23 to form a mounting channel 201 , and the mounting channel 201 provides a mounting position for the battery cell 3 .

[0038] In this embodiment, the heat dissipation area can be increased by arranging the flow plate 23 opposite to the large surface (the surface with the largest area) of the battery core 3, thereby improving the heat dissipation efficiency of the liquid cooling component.

[0039] In this embodiment, the liquid inlet plate 21 has a liquid inlet channel inside, the multiple flow plates have flow channels inside, and the liquid outlet plate 22 has a liquid outlet channel inside. The multiple flow channels are arranged at intervals along the second direction, one end of the flow channel is connected to the liquid inlet channel, and the other end of the flow channel is connected to the liquid outlet channel. The multiple flow channels are connected to the liquid inlet channel and the liquid outlet channel at the same time, so that the coolant can flow inside the multiple flow channels at the same time, so as to cool the battery cells 3 inside the multiple installation channels 201 at the same time, so as to ensure that the cooling efficiency of the multiple battery cells 3 is the same.

[0040] The coolant flows from the liquid inlet plate 21 through multiple flow plates 23 to the liquid outlet plate 22 and is discharged from the liquid outlet plate 22, so that the coolant flow is arranged inside the liquid cooling component 2 to improve the heat dissipation efficiency of the battery cell 3.

[0041] like Figure 2 and Figure 3 As shown, the shaping frame 1 has an outer protrusion 11, and the outer protrusion 11 has a limiting cavity 12 connected to the shaping groove 101, and the two ends of the liquid inlet plate 21 and the liquid outlet plate 22 extend into the interior of the limiting cavity 12 along the second direction.

[0042] Specifically, the limiting cavity 12 of the outer protrusion 11 can limit the liquid inlet plate 21 and the liquid outlet plate 22, increase the stability of the placement of the liquid inlet plate 21 and the liquid outlet plate 22, and further achieve the limitation of the liquid cooling component 2 in the first direction and the second direction, thereby improving the placement stability of the entire liquid cooling component 2, and facilitating the liquid cooling component 2 not to be displaced during the glue injection process, resulting in overall offset and inconvenience in demolding.

[0043] Furthermore, one of the outer protrusions 11 has a first via hole, and the other outer protrusion 11 has a second via hole.

[0044] In this embodiment, the liquid cooling component 2 also includes a liquid inlet nozzle 24 and a liquid outlet nozzle 25. The liquid inlet nozzle 24 is arranged on the liquid inlet plate 21, and at least a portion of the liquid inlet nozzle 24 passes through the first through hole and extends out of the molding groove 101. The liquid outlet nozzle 25 is arranged on the liquid outlet plate 22, and at least a portion of the liquid outlet nozzle 25 passes through the second through hole and extends out of the molding groove 101.

[0045] Among them, the liquid inlet nozzle 24 supplies liquid to the liquid inlet plate 21, and the liquid outlet nozzle 25 discharges liquid to the liquid outlet plate 22, so that the coolant enters the interior of the liquid inlet plate 21 through the liquid inlet nozzle 24, and then flows to the liquid outlet plate 22 through the flow plate 23, and the coolant inside the liquid outlet plate 22 flows out through the liquid outlet nozzle 25. The liquid inlet nozzle 24 and the liquid outlet nozzle 25 are set to control the flow rate and on-off of the coolant in the entire flow channel, thereby facilitating the control of the liquid inlet and liquid outlet of the liquid cooling component.

[0046] It should be noted that valve bodies are provided on the liquid inlet nozzle 24 and the liquid outlet nozzle 25. The liquid inlet nozzle 24 and the liquid outlet nozzle 25 are mainly provided for debugging. When the molding frame 1 is demoulded later, the liquid inlet nozzle 24 and the liquid outlet nozzle 25 are first removed.

[0047] In this embodiment, the inner wall surface of the calibrating frame 1 has an anti-adhesion coating 5 .

[0048] Among them, the anti-adhesive coating 5 has anti-sticking ability, which can prevent the colloid from adhering to the inner wall surface of the shaping frame 1, thereby realizing the detachability between the battery cell assembly and the shaping frame. By setting the anti-adhesive coating 5, it is convenient for the later demoulding of the shaping frame 1. The anti-adhesive coating 5 is attached to the inner surface of the shaping frame 1 to facilitate the reuse of the shaping frame 1.

[0049] In this embodiment, the filling gaps between the battery cell 3 and the installation channel 201 and the filling gaps between the battery cells 3 are connected. In this way, during the glue injection process, the colloid 4 can fill all the filling gaps by flowing, which improves the glue injection efficiency and avoids the situation where there is no colloid 4 in some gaps. The connected filling gaps are conducive to ensuring the uniformity of glue injection, thereby improving the uniformity of heat dissipation of multiple battery cells 3, and also facilitate the assembly of the colloid 4, the battery cell 3 and the liquid cooling assembly 2 into a whole, so as to facilitate the demoulding in the later stage.

[0050] In this embodiment, limited rubber strips are provided on the side surfaces and large surfaces of the battery cells 3 to form the filling gaps between the battery cells 3 and between the battery cells 3 and the installation channels 201 .

[0051] Embodiment 2

[0052] The present embodiment provides a battery pack, comprising: a battery cell assembly, wherein the battery cell assembly is obtained by removing the shaping frame 1 from the battery pack structure of the above embodiment.

[0053] like Figure 1 As shown, the battery pack further includes a box body 6, and the battery cell assembly is installed inside the box body 6. The box body 6 is used to place the formed battery cell assembly, and plays a role of supporting and protecting the entire battery cell assembly.

[0054] Furthermore, the battery pack also includes a connector, which is arranged between the outer wall surface of the battery cell assembly and the inner wall surface of the box body 6. By arranging the connector between the outer wall surface of the battery cell assembly and the inner wall surface of the box body 6, the overall sealing is improved, and the stability of the installation of the battery cell assembly is also improved, so as to avoid the battery cell assembly shaking inside the box body 6 and causing collision with the box body 6.

[0055] Furthermore, the connecting piece is a structural colloid 7, and the battery cell assembly and the box body 6 are bonded by the structural colloid 7. The structural adhesive has high strength, impact resistance, and aging resistance, and can increase the structural strength of the battery cell assembly after molding and increase the service life.

[0056] Installation process: first apply a layer of anti-adhesive coating on the surface of the shaping frame 1, then put the liquid cooling assembly 2 into the shaping frame 1, and then place the battery cell 3 with limited adhesive strips on the large surface and side surfaces into the installation channel 201 of the liquid cooling assembly 2, and place the large surface of the battery cell 3 opposite to the flow plate 23. After the battery cell 3 is placed, inject the colloid 4 into the shaping frame 1, and demold the shaping frame 1 after the colloid 4 solidifies and forms, so that the battery cell assembly is separated from the shaping frame 1, and the battery cell assembly is placed inside the box 6, and the structural colloid 7 is set between the battery cell assembly and the box 6 to connect the battery cell assembly and the box 6.

[0057] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0058] 1. By assembling the liquid cooling assembly 2, the colloid 4 and the battery cell 3 into a battery cell assembly, a plurality of components are assembled into a whole, and the setting of additional shells is reduced, thereby realizing the improvement of the overall space utilization.

[0059] 2. The cell assembly formed by the liquid cooling assembly 2, the colloid 4 and the cell 3 is detachably arranged inside the shaping frame 1. On the one hand, the shaping frame can limit the grouping of the cell assembly, and on the other hand, the shaping frame 1 can be removed and reused, thereby reducing costs.

[0060] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0061] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0062] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0063] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery pack structure, characterized in that: include: A shaping frame (1), wherein the shaping frame (1) has a shaping groove (101); A liquid cooling component (2), the liquid cooling component (2) being arranged inside the shaping groove (101) and abutting against the inner peripheral wall of the shaping groove (101) for limiting position, the liquid cooling component (2) having a plurality of installation channels (201); A battery core (3), the battery core (3) being installed inside the installation channel (201); The colloid (4) is filled in a gap between the battery cell (3) and the mounting channel (201) and / or in a gap between two adjacent battery cells (3); the liquid cooling assembly (2), the colloid (4) and the battery cell (3) form a battery cell assembly; and the battery cell assembly is detachably arranged inside the shaping frame (1).

2. The battery pack structure according to claim 1, characterized in that: The liquid cooling component (2) comprises: A liquid inlet plate (21) and a liquid outlet plate (22) are arranged at intervals along a first direction, wherein the liquid inlet plate (21) and the liquid outlet plate (22) are respectively in contact with the inner wall surface of the shaping groove (101); A flow plate (23), wherein the flow plate (23) is arranged between the liquid inlet plate (21) and the liquid outlet plate (22), and a flow channel inside the flow plate (23) communicates with a liquid inlet channel inside the liquid inlet plate (21) and a liquid outlet channel inside the liquid outlet plate (22), and a plurality of the flow plates (23) are arranged at intervals along a second direction perpendicular to the first direction, and a mounting channel (201) is formed between two adjacent flow plates (23).

3. The battery pack structure according to claim 2, characterized in that: The shaping frame (1) has an outer convex portion (11), the outer convex portion (11) has a limiting cavity (12) connected to the shaping groove (101), and the two ends of the liquid inlet plate (21) and the liquid outlet plate (22) along the second direction respectively extend into the interior of the limiting cavity (12).

4. The battery pack structure according to claim 3, characterized in that: One of the outer protrusions (11) has a first through hole, and the other of the outer protrusions (11) has a second through hole, and the liquid cooling component (2) further comprises: a liquid inlet nozzle (24), the liquid inlet nozzle (24) being arranged on the liquid inlet plate (21), and at least a portion of the liquid inlet nozzle (24) passing through the first through hole and extending out of the shaping groove (101); A liquid outlet nozzle (25), wherein the liquid outlet nozzle (25) is arranged on the liquid outlet plate (22), and at least a portion of the liquid outlet nozzle (25) passes through the second through hole and extends out of the shaping groove (101).

5. The battery pack structure according to claim 2, characterized in that: The large surface of the battery core (3) is arranged opposite to the current-passing plate (23).

6. The battery pack structure according to claim 1, characterized in that: The inner wall surface of the shaping frame (1) is provided with an anti-adhesion coating (5).

7. The battery pack structure according to claim 1, characterized in that: The filling gap between the battery core (3) and the mounting channel (201) and the filling gap between the battery core (3) and the battery core (3) are arranged to be in communication.

8. The battery pack structure according to claim 1, characterized in that: The side surfaces and the large surface of the battery cell (3) are both provided with limited rubber strips, which are used to form the filling gaps between the battery cells (3) and between the battery cells (3) and the installation channel (201).

9. A battery pack, characterized in that: The battery pack comprises: A battery cell assembly, wherein the battery cell assembly is obtained by removing the shaping frame (1) from the battery pack structure according to any one of claims 1 to 8; A box (6), wherein the battery cell assembly is installed inside the box (6); A connecting piece, wherein the connecting piece is arranged between the outer wall surface of the battery core assembly and the inner wall surface of the box body (6).

10. The battery pack according to claim 9, characterized in that: The connecting piece is a structural colloid (7), and the battery core assembly and the box (6) are bonded together via the structural colloid (7).

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