Battery pack

Abstract

The utility model provides a battery pack, which comprises a first box body, a second box body and a third box body, the first box body defines a first cavity with an open top, and the first box body is provided with a support beam extending towards the inside of the first cavity; the cold plate is arranged in the first cavity; and the connecting structure is provided with a supporting table, and the cold plate is supported on the supporting beam through the supporting table, so that the cold plate is supported on the box body. According to the battery pack disclosed by the utility model, the connecting structure is arranged, so that the contact area between the cold plate and the first box body can be reduced, the heat loss in the battery pack can be reduced, and the thermal insulation performance of the battery pack is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack manufacturing, in particular to a battery pack. Background Art

[0002] In the existing battery pack, the cold plate is supported on the box body. However, this will cause the heat of the battery assembly to be directly transferred to the outside of the battery pack through the cold plate and the box body, resulting in serious heat loss of the battery assembly, thereby failing to ensure the thermal insulation performance of the battery pack. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a battery pack, which can ensure the thermal insulation performance of the battery pack.

[0004] According to an embodiment of the utility model, the battery pack includes: a first box body, the first box body defines a first cavity with an open top, the first box body is provided with a support beam extending toward the first cavity; a cold plate, the cold plate is arranged in the first cavity; and a connecting structure, the connecting structure is provided with a support platform, the cold plate is supported on the support beam through the support platform, so that the cold plate is supported on the box body.

[0005] According to the battery pack of the utility model, a connection structure is provided, which can reduce the contact area between the cold plate and the first box body, thereby reducing the heat loss in the battery pack and ensuring the thermal insulation performance of the battery pack.

[0006] According to some embodiments of the utility model, the connection structure includes: a support member, one end of which is formed as the support platform, and the other end of the support member is connected to the cold plate; and a locking member, which is threadedly connected to the support member to fix the support member on the cold plate.

[0007] According to some optional embodiments of the utility model, the support platform abuts between the support beam and the cold plate, and the support member further includes: a column, the column is connected to one end of the support platform away from the support beam, the periphery of the cold plate is provided with a through hole, the column is penetrated through the through hole, and the locking member is connected to the column.

[0008] According to some optional embodiments of the present invention, a connecting portion is formed on the edge of the cold plate, and the connecting portion has a cavity. The through hole is formed on the connecting portion and passes through the top wall and the bottom wall of the cavity. The column extends into the cavity from the bottom side of the connecting portion through the bottom wall of the cavity, and the locking piece passes through the top wall of the cavity from the upper side of the connecting portion and is connected to the column.

[0009] According to some embodiments of the present invention, the support beam comprises a plurality of beam segments, and the plurality of beam segments are arranged at intervals along the circumference of the first box body.

[0010] According to some optional embodiments of the present utility model, the support beam includes two beam sections, and the two beam sections are respectively arranged on two opposite sides of the box body.

[0011] According to some embodiments of the present invention, there are multiple connecting structures, and the multiple connecting structures are arranged at intervals along the length direction of the beam segment.

[0012] According to some embodiments of the utility model, there are multiple cold plates, and the multiple cold plates are arranged at intervals in the up and down directions. There are multiple support beams, and the multiple support beams correspond one-to-one to the multiple cold plates. Each cold plate is supported on the corresponding support beam through the connecting structure.

[0013] According to some optional embodiments of the present invention, there are two cold plates, and the two cold plates are respectively arranged on the upper side and the lower side of the battery assembly of the battery pack.

[0014] According to some embodiments of the present invention, the battery pack further includes: a second box body, the lower side of which is open, and the second box body is docked with the first box body in the up and down directions, and cooperates to define a closed accommodating cavity.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of a battery pack according to an embodiment of the utility model;

[0017] Figure 2 is along Figure 1 Sectional view along line AA;

[0018] Figure 3 yes Figure 2 A partial enlarged view of point B in the middle.

[0019] Reference numerals:

[0020] 100. Battery pack;

[0021] 10. first box; 11. support beam; 12. first cavity;

[0022] 20. Cold plate; 21. Connecting part;

[0023] 30. Connecting structure; 31. Support member; 311. Support platform; 312. Column; 32. Locking member;

[0024] 40. The second box. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0026] Please refer to the following Figure 1-3 A battery pack 100 according to an embodiment of the present invention is described.

[0027] Reference Figure 1 , Figure 2 and Figure 3 According to an embodiment of the present utility model, the battery pack 100 includes: a first box body 10, a cold plate 20 and a connecting structure 30.

[0028] Specifically, the first box body 10 defines a first cavity 12 with an open top, and the first box body 10 is provided with a support beam 11 extending toward the first cavity 12; the cold plate 20 is provided in the first cavity 12; the connection structure 30 is provided with a support platform 311, and the cold plate 20 is supported on the support beam 11 through the support platform 311, so that the cold plate 20 is supported on the box body. The cold plate 20 can adjust the temperature in the first cavity 12 to prevent the battery pack 100 from thermal runaway damage.

[0029] For example, Figure 1 , Figure 2 and Figure 3 As shown, the top of the first box body 10 is open, a first cavity 12 is formed in the first box body 10 , a support beam 11 is disposed in the first box body 10 , a connection structure 30 is supported on the support beam 11 , and a cold plate 20 is supported on the connection structure 30 .

[0030] The battery pack 100 of the utility model is provided with a connection structure 30, and the cold plate 20 is supported on the first box body 10 through the connection structure 30, which can reduce the contact area between the cold plate 20 and the first box body 10, cut off the heat transfer channel between the battery components in the battery pack 100 and the outside, thereby reducing the heat loss in the battery pack 100 and ensuring the thermal insulation performance of the battery pack 100. In addition, there is no need to set up an additional thermal insulation structure outside the battery pack 100, thereby reducing the thermal insulation cost of the battery pack 100. Moreover, the cold plate 20 cooperates with the first box body 10 to strengthen the strength of the first box body 10, thereby improving the strength of the entire battery pack 100.

[0031] According to the battery pack 100 of the embodiment of the present invention, the connection structure 30 is provided to reduce the contact area between the cold plate 20 and the first box body 10 , thereby reducing the heat loss in the battery pack 100 and ensuring the thermal insulation performance of the battery pack 100 .

[0032] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 The connection structure 30 includes: a support member 31 and a locking member 32. One end of the support member 31 (such as Figure 3 The lower end of the support member 31 shown in FIG. 3 is formed as a support platform 311, and the other end of the support member 31 (as shown in FIG. Figure 3 The upper end of the support member 31 shown in the figure is connected to the cold plate 20; the locking member 32 is threadedly connected to the support member 31 to fix the support member 31 on the cold plate 20.

[0033] In this way, one end of the support member 31 forms a support platform 311, which can make the support member 31 stably supported on the support beam 11, thereby effectively preventing the support member 31 from shaking relative to the support beam 11, and then stably fixing the cold plate 20 on the first box 10. At the same time, the locking member 32 fixes the support member 31 and the cold plate 20, thereby further preventing the cold plate 20 from separating from the support member 31. In addition, the connection form of the locking member 32 and the support member 31 is simple and easy to operate, thereby effectively improving the connection efficiency of the locking member 32 and the support member 31.

[0034] For example, Figure 2 and Figure 3 As shown, the support member 31 is vertically arranged, the lower end of the support member 31 forms a support platform 311, the upper end of the support member 31 is connected to the cold plate 20, and the locking member 32 is vertically arranged. Preferably, the locking member 32 is a bolt, which has a simple structure, low cost, and is convenient for batch use.

[0035] According to some optional embodiments of the present invention, referring to Figure 2 and Figure 3 The support platform 311 is in contact with the support beam 11 and the cold plate 20. The support member 31 also includes a column 312 connected to one end of the support platform 311 away from the support beam 11 (such as Figure 3 The upper end of the support beam 11 shown in the figure), the periphery of the cold plate 20 is provided with a through hole, the column 312 is penetrated in the through hole, and the locking member 32 is connected to the column 312.

[0036] Therefore, the support platform 311 can provide support for the cold plate 20, so that the cold plate 20 can be supported on the support beam 11 through the support platform 311. At the same time, one end of the column 312 is connected to the locking piece 32 through the through hole, which can reduce the matching length between the locking piece 32 and the connecting structure 30, thereby facilitating the connection between the locking piece 32 and the support piece 31.

[0037] For example, Figure 2 and Figure 3 As shown, the support platform 311 is cylindrical, and the column 312 is a cylindrical body 312. The column 312 is arranged at the upper end of the support platform 311. The left and right edges of the cold plate 20 are both provided with through holes, and the column 312 extends from bottom to top through the through holes into the cold plate 20.

[0038] Furthermore, if Figure 2 and Figure 3 As shown, the diameter of the support platform 311 is greater than the diameter of the column 312. Therefore, when the column 312 passes through the through hole, the support platform 311 can be prevented from passing through the through hole, thereby ensuring that the support platform 311 can be supported between the support beam 11 and the cold plate 20.

[0039] According to some optional embodiments of the present invention, referring to Figure 2 and Figure 3 The edge of the cold plate 20 is formed with a connecting portion 21, the connecting portion 21 has a cavity, a perforation is formed on the connecting portion 21 and passes through the top wall and the bottom wall of the cavity, and the column 312 is formed from the lower side of the connecting portion 21 (such as Figure 3 The lower side of the connecting portion 21 as shown extends into the cavity through the bottom wall of the cavity, and the locking member 32 passes through the top wall of the cavity from the upper side of the connecting portion 21 and is connected to the column 312.

[0040] In this way, the connecting portion 21 is arranged at the edge of the cold plate 20, which will not affect the insulation function of the cold plate 20 in the first box body 10. At the same time, this structural arrangement is reasonable, which is convenient for connecting the cold plate 20 with the connecting structure 30. Furthermore, the connecting portion 21 has a cavity, which can facilitate the column 312 to pass through the through hole into the cavity, thereby reducing the space occupied by the cold plate 20 in the height direction of the first box body 10, and also facilitating the connection between the locking piece 32 and the column 312.

[0041] For example, Figure 2 and Figure 3 As shown, the left and right edges of the cold plate 20 are both formed with a connecting portion 21, a cavity extending in the up-down direction is formed in the connecting portion 21, and a through hole penetrates the bottom wall and the top wall of the cavity in the up-down direction. When the connecting structure 30 is connected to the cold plate 20, the support platform 311 is supported on the support beam 11, the column 312 extends into the cavity through the through hole, and the locking member 32 passes through the through hole from top to bottom and is connected to the column 312.

[0042] According to some embodiments of the present invention, referring to Figure 2 and Figure 3The support beam 11 includes a plurality of beam segments, and the support beam 11 may include two, three, four or more beam segments, and the plurality of beam segments are arranged at intervals along the circumference of the first box body 10. Thus, by providing a plurality of beam segments, the plurality of edges of the cold plate 20 can be supported on the connecting structure 30, thereby ensuring that the cold plate 20 can be stably supported on the first box body 10, and thus effectively preventing the cold plate 20 from tipping over.

[0043] According to some optional embodiments of the present invention, referring to Figure 2 and Figure 3 The support beam 11 includes two beam sections, which are respectively arranged on opposite sides of the first box body 10. Thus, the two side edges of the cold plate 20 can be supported on the two beam sections through the connecting structure 30, thereby effectively preventing the cold plate 20 from tipping over.

[0044] For example, Figure 2 and Figure 3 As shown, the two beam sections extend along the front-to-back direction of the first box body 10, and are arranged at intervals along the left-to-right direction. The left end of the left beam section is connected to the cavity wall of the first cavity 12, and the left beam section extends horizontally to the right toward the first cavity 12. The right end of the right beam section is connected to the cavity wall of the first cavity 12, and the right beam section extends horizontally to the left toward the first cavity 12.

[0045] According to some embodiments of the present invention, referring to Figure 1 , Figure 2 and Figure 3 The number of the connecting structures 30 is multiple, that is, the number of the connecting structures 30 can be two, three, four or more, and the multiple connecting structures 30 are arranged along the length direction of the beam segment (such as Figure 1 Thus, the plurality of connection structures 30 can provide multi-point support for the cold plate 20, so that the cold plate 20 can be stably supported on the support beam 11, thereby effectively preventing the cold plate 20 from falling over.

[0046] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The number of the cold plates 20 is multiple, that is, the number of the cold plates 20 can be two, three, four or more, and the multiple cold plates 20 are arranged in the up and down direction (such as Figure 2 The support beams 11 are arranged at intervals in the upper and lower directions as shown, and the number of support beams 11 is multiple, that is, the number of support beams 11 can be two, three, four or more, and the multiple support beams 11 correspond one by one to the multiple cold plates 20, and each cold plate 20 is supported on the corresponding support beam 11 through the connecting structure 30.

[0047] In this way, multiple cold plates 20 can ensure the temperature control effect of the cold plate 20 on the first box body 10, thereby effectively preventing the battery pack 100 from being damaged by thermal runaway. At the same time, the support beam 11 corresponds to the cold plate 20, so that each cold plate 20 can be supported on the support beam 11.

[0048] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 There are two cold plates 20, which are respectively arranged on the upper and lower sides of the battery assembly of the battery pack 100. Therefore, this structure is reasonably arranged, and the upper and lower sides of the battery assembly can effectively maintain a constant temperature through the cold plates 20, thereby effectively preventing the battery pack 100 from thermal runaway.

[0049] For example, Figure 1 and Figure 2 As shown, there are two support beams 11, one of which is arranged at the bottom of the first box body 10, and the two beam sections of the lower support beam 11 are arranged opposite to each other in the left-right direction, and the other support beam 11 is arranged at the top of the first box body 10, and the two beam sections of the upper support beam 11 are arranged opposite to each other in the left-right direction. There are two cold plates 20, one of which is supported on the lower support beam 11, and the other is supported on the upper support beam 11, and the battery assembly is arranged on the lower cold plate 20.

[0050] According to some embodiments of the present invention, referring to Figure 1 The battery pack 100 further includes: a second box body 40, a lower side of the second box body 40 (such as Figure 1 The lower side of the second box body 40 shown in the figure is open, and the second box body 40 is connected to the first box body 10 in the up and down direction, and cooperates to define a closed accommodating cavity. Therefore, the second box body 40 cooperates with the first box body 10 to enclose the battery assembly in the accommodating cavity, thereby providing effective protection for the battery assembly.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0055] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that: include: A first box body, wherein the first box body defines a first cavity with an open top, and the first box body is provided with a support beam extending toward the first cavity; a cold plate, the cold plate being disposed in the first cavity; A connecting structure is provided with a supporting platform, and the cold plate is supported on the supporting beam through the supporting platform so that the cold plate is supported on the box body.

2. The battery pack according to claim 1, characterized in that: The connection structure comprises: A support member, one end of which is formed as the support platform, and the other end of which is connected to the cold plate; A locking member is threadedly connected to the support member to fix the support member on the cold plate.

3. The battery pack according to claim 2, characterized in that: The support platform is abutted between the support beam and the cold plate, and the support member further comprises: a column connected to an end of the support platform away from the support beam, The cold plate is provided with a through hole at its periphery, the column is passed through the through hole, and the locking piece is connected to the column.

4. The battery pack according to claim 3, characterized in that: A connecting portion is formed at the edge of the cold plate, and the connecting portion has a cavity. The through hole is formed on the connecting portion and passes through the top wall and the bottom wall of the cavity. The column extends into the cavity from the bottom side of the connecting portion through the bottom wall of the cavity. The locking piece passes through the top wall of the cavity from the upper side of the connecting portion and is connected to the column.

5. The battery pack according to claim 1, characterized in that: The supporting beam includes a plurality of beam segments, and the plurality of beam segments are arranged at intervals along the circumference of the first box body.

6. The battery pack according to claim 5, characterized in that: The support beam comprises two beam sections, and the two beam sections are respectively arranged on two opposite sides of the box body.

7. The battery pack according to claim 5, characterized in that: There are multiple connecting structures, and the multiple connecting structures are arranged at intervals along the length direction of the beam section.

8. The battery pack according to claim 1, characterized in that: There are multiple cold plates, which are arranged at intervals in the up-down direction. There are multiple support beams, which correspond to the cold plates one by one. Each cold plate is supported on the corresponding support beam through the connection structure.

9. The battery pack according to claim 8, characterized in that: The number of the cold plates is two, and the two cold plates are respectively arranged on the upper side and the lower side of the battery assembly of the battery pack.

10. The battery pack according to claim 1, characterized in that: Also includes: The second box body has an open lower side, and the second box body is butted against the first box body in the up and down directions, and cooperates with each other to define a closed accommodating cavity.

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