Battery pack

Abstract

The utility model provides a battery pack which comprises a box body, an installation cavity is formed in the box body, an opening communicated with the installation cavity is formed in the top of the box body, and a first convex part is formed on at least part of the peripheral edge of the opening; the bracket is arranged around the peripheral edge of the opening, a plurality of second convex parts are arranged on the bracket, and the second convex parts are connected with the first convex parts; and the first cold plate is arranged on the bracket. According to the battery pack disclosed by the utility model, the first convex part and the second convex part are arranged, so that the connection between the bracket and the box body can be facilitated, the installation efficiency of the bracket and the box body can be improved, and meanwhile, the connection strength between the bracket and the box body can be improved, so that the connection strength between the first cold plate and the box body can be 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 usually fixed to the box body by a bracket. However, the connection between the existing bracket and the box body is complicated, which is not conducive to improving the installation efficiency of the bracket and the box body. 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 improve the installation efficiency of the bracket and the box.

[0004] According to an embodiment of the utility model, the battery pack includes: a box body, a mounting cavity is formed in the box body, an open opening connected to the mounting cavity is formed on the top of the box body, and a first convex portion is formed on at least a portion of the circumference of the open opening; a bracket, the bracket is arranged around the circumference of the open opening, a plurality of second convex portions are provided on the bracket, and the second convex portions are connected to the first convex portions; a first cold plate, and the first cold plate is arranged on the bracket.

[0005] According to the battery pack of the utility model, the first protrusion and the second protrusion are provided, which can facilitate the connection between the bracket and the box body, and improve the installation efficiency of the bracket and the box body. At the same time, the connection strength between the bracket and the box body can be increased, thereby ensuring the connection strength between the first cold plate and the box body.

[0006] According to some embodiments of the utility model, the first protrusion extends toward the installation cavity, and the number of the first protrusions is multiple, and the multiple first protrusions are arranged at intervals along the circumference of the open opening. The second protrusion extends toward the circumference of the open opening, and the number of the second protrusions is multiple, and the multiple second protrusions are arranged at intervals along the circumference of the bracket, and the number of the first protrusions corresponds to the number of the second protrusions.

[0007] According to some optional embodiments of the present invention, the second protrusion is overlapped on the first protrusion, and the second protrusion is threadedly connected to the first protrusion.

[0008] According to some embodiments of the present invention, the bracket is formed into a rectangular ring shape, and a first reinforcing beam is formed on the bracket, and two ends of the first reinforcing beam are connected to the bracket.

[0009] According to some embodiments of the present invention, a through hole is formed on the bracket, and the through hole penetrates the bracket along the thickness direction of the bracket, so that the wiring harness in the installation cavity passes through the through hole.

[0010] According to some embodiments of the present invention, a plurality of second reinforcing beams are formed in the box body, and the plurality of second reinforcing beams are arranged at intervals in the box body.

[0011] According to some optional embodiments of the present invention, at least one of the second reinforcement beams is formed as a reinforcement plate, the reinforcement plate extends vertically, and a top end of the reinforcement plate supports the first cold plate.

[0012] According to some optional embodiments of the present invention, an end plate is provided between the reinforcing plate and the first cold plate, the lower end of the end plate is connected to the reinforcing plate, a boss is formed on the end plate, the boss extends toward the first cold plate, and the upper end of the boss abuts against the lower surface of the first cold plate.

[0013] According to some optional embodiments of the present invention, there are multiple end plates, and the multiple end plates are arranged sequentially along the length direction of the reinforcing plate.

[0014] According to some embodiments of the present invention, the battery pack further includes: a first battery module and a second battery module, the first battery module is supported on the first cold plate, and the second battery module is disposed in the installation 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 yes Figure 1 An exploded view of the battery pack shown in;

[0018] Figure 3 yes Figure 2 The battery pack shown in FIG. 1 does not include a schematic diagram of a bracket and a first cold plate;

[0019] Figure 4 yes Figure 3 The battery pack shown in FIG. does not include a schematic diagram of the end plates;

[0020] Figure 5 yes Figure 2 Schematic diagram of the bracket shown in;

[0021] Figure 6 yes Figure 3 Schematic diagram of the end plate shown in .

[0022] Reference numerals:

[0023] 100. Battery pack;

[0024] 10. box body; 11. first convex portion; 12. second reinforcing beam; 121. reinforcing plate;

[0025] 20. bracket; 21. second convex portion; 22. first reinforcing beam; 23. perforation;

[0026] 30. First cold plate;

[0027] 40. end plate; 41. boss;

[0028] 50. Second cold plate. DETAILED DESCRIPTION

[0029] 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.

[0030] Please refer to the following Figure 1-6 A battery pack 100 according to an embodiment of the present invention is described.

[0031] Reference Figure 1 , Figure 2 and Figure 5 According to an embodiment of the utility model, the battery pack 100 includes: a box body 10, a bracket 20 and a first cold plate 30.

[0032] Specifically, an installation cavity is formed in the box body 10, and an open mouth connected to the installation cavity is formed on the top of the box body 10, and a first convex portion 11 is formed on at least a portion of the circumference of the open mouth, that is, the first convex portion 11 can be formed on a portion of the circumference of the open mouth, or can be formed on the entire circumference of the open mouth; the bracket 20 is arranged around the circumference of the open mouth, and a plurality of second convex portions 21 are provided on the bracket 20, and the second convex portions 21 are connected to the first convex portions 11; the first cold plate 30 is arranged on the bracket 20.

[0033] For example, Figure 1 , Figure 2 and Figure 5 As shown, the upper portion of the box body 10 is opened to form an open opening, a mounting cavity is formed inside the box body 10 , the bracket 20 is extended around the periphery of the open opening, the second protrusion 21 is connected to the first protrusion 11 , and the first cold plate 30 is connected to the bracket 20 .

[0034] When assembling the battery pack 100 , the bracket 20 is first placed at the open position, and then the second protrusion 21 is connected to the first protrusion 11 , and finally the first cold plate 30 is connected to the bracket 20 . At this point, the battery pack 100 is assembled.

[0035] The battery pack 100 of the present invention is provided with a first protrusion 11 and a second protrusion 21. The cooperation of the first protrusion 11 and the second protrusion 21 can facilitate the connection between the bracket 20 and the box body 10, and improve the installation efficiency of the bracket 20 and the box body 10. At the same time, the cooperation of the first protrusion 11 and the second protrusion 21 can increase the connection strength between the bracket 20 and the box body 10, avoid separation of the bracket 20 and the box body 10, thereby ensuring the connection strength between the first cold plate 30 and the box body 10.

[0036] According to the battery pack 100 of the embodiment of the utility model, the first protrusion 11 and the second protrusion 21 are provided, which can facilitate the connection between the bracket 20 and the box body 10, and improve the installation efficiency of the bracket 20 and the box body 10. At the same time, the connection strength between the bracket 20 and the box body 10 can be increased, thereby ensuring the connection strength between the first cold plate 30 and the box body 10.

[0037] According to some embodiments of the present invention, referring to Figure 4 and Figure 5 The first protrusion 11 extends toward the installation cavity, and the number of the first protrusions 11 is multiple, that is, the number of the first protrusions 11 can be two, three or four or more, and the multiple first protrusions 11 are arranged at intervals along the circumference of the open mouth. The second protrusion 21 extends toward the circumference of the open mouth, and the number of the second protrusions 21 is multiple, that is, the number of the second protrusions 21 can be two, three or four or more, and the multiple second protrusions 21 are arranged at intervals along the circumference of the bracket 20, and the number of the first protrusions 11 and the second protrusions 21 corresponds one to one.

[0038] In this way, multiple first protrusions 11 and multiple second protrusions 21 can further increase the connection strength between the bracket 20 and the box body 10, thereby further preventing the bracket 20 from being separated from the box body 10, and further ensuring the connection strength between the first cold plate 30 and the box body 10. At the same time, the first protrusion 11 and the second protrusion 21 are connected in the installation cavity, thereby preventing the first protrusion 11 and the second protrusion 21 from protruding to the outside of the box body 10, thereby reducing the volume of the box body 10 and facilitating the transportation of the box body 10.

[0039] For example, Figure 4 and Figure 5 As shown, two first protrusions 11 are provided on the left side periphery of the open mouth, and four first protrusions 11 are provided on the right side periphery of the open mouth, and the first protrusions 11 extend horizontally toward the installation cavity, two second protrusions 21 are provided on the left side of the bracket 20, and four second protrusions 21 are provided on the right side of the bracket 20, and the second protrusions 21 extend horizontally toward the periphery of the open mouth.

[0040] According to some optional embodiments of the present invention, referring to Figure 1The second protrusion 21 is overlapped on the first protrusion 11, and the second protrusion 21 is screwed to the first protrusion 11. Therefore, this connection form has a simple structure, low cost, and is convenient for batch use.

[0041] According to some optional embodiments of the present invention, referring to Figure 1 and Figure 5 The bracket 20 is formed into a rectangular ring shape, and a first reinforcing beam 22 is formed on the bracket 20, and both ends of the first reinforcing beam 22 are connected to the bracket 20. Therefore, the bracket 20 has a simple structure and is easy to process. At the same time, the first reinforcing beam 22 can strengthen the strength of the bracket 20 and prevent the bracket 20 from being damaged.

[0042] For example, Figure 1 and Figure 5 As shown, a first reinforcing beam 22 is provided in the middle position of the bracket 20 in the left-right direction. The first reinforcing beam 22 extends along the front-back direction, and the front and rear ends of the first reinforcing beam 22 are connected to the bracket 20 .

[0043] According to some optional embodiments of the present invention, referring to Figure 5 The bracket 20 is formed with a through hole 23, and the through hole 23 is formed along the thickness direction of the bracket 20 (such as Figure 5 The bracket 20 is penetrated by the upper and lower directions shown in the figure, so that the wiring harness in the installation cavity passes through the through hole 23. Thus, the through hole 23 can facilitate the wiring harness to pass through the installation cavity, thereby facilitating the connection between the battery module in the installation cavity and the outside of the box body 10.

[0044] For example, Figure 5 As shown, the through hole 23 extends from the outer edge of the bracket 20 toward the inside of the bracket 20 , and the through hole 23 passes through the bracket 20 in the up-down direction, and two through holes 23 are provided.

[0045] According to some embodiments of the present invention, referring to Figure 3 and Figure 4 , a plurality of second reinforcing beams 12 are formed in the box body 10, that is, two, three, four or more second reinforcing beams 12 are formed in the box body 10, and the plurality of second reinforcing beams 12 are arranged at intervals in the box body 10. Thus, the reinforcing beams can strengthen the strength of the box body 10 to prevent the box body 10 from being damaged, and at the same time, the plurality of reinforcing beams can further strengthen the strength of the box body 10.

[0046] For example, Figure 3 and Figure 4 As shown, the second reinforcing beam 12 extends in the front-to-back direction, and three second reinforcing beams 12 are formed in the box body 10 , and the three reinforcing beams are arranged at intervals in the left-to-right direction.

[0047] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 4At least one second reinforcing beam 12 is formed as a reinforcing plate 121, which extends vertically, and the top of the reinforcing plate 121 supports the first cold plate 30. Thus, the reinforcing plate 121 can support the first cold plate 30, thereby preventing the first cold plate 30 from being deformed by force, and further ensuring the service life of the first cold plate 30.

[0048] For example, Figure 3 and Figure 4 As shown, the middle second reinforcement beam 12 is formed as a reinforcement plate 121 , and the reinforcement plate 121 extends toward the first cold plate 30 .

[0049] According to some optional embodiments of the present invention, referring to Figure 3 , Figure 4 and Figure 6 An end plate 40 is provided between the reinforcing plate 121 and the first cold plate 30. The lower end of the end plate 40 (eg Figure 3 The lower end of the end plate 40 shown in FIG. 1 is connected to the reinforcing plate 121, and a boss 41 is formed on the end plate 40. The boss 41 extends toward the first cold plate 30, and the upper end of the boss 41 (as shown in FIG. Figure 3 The upper end of the end plate 40 shown in FIG. 4 abuts against the lower surface of the first cold plate 30 .

[0050] In this way, the end plate 40 can protect the end of the battery module, thereby preventing the battery module from being damaged. At the same time, the boss 41 abuts against the first cold plate 30, and there is no need to make the upper end of the entire end plate 40 abut against the first cold plate 30, thereby reducing the material used for the end plate 40 and further reducing the manufacturing cost of the end plate 40.

[0051] For example, Figure 3 , such as 4 and Figure 6 As shown, the lower end of the end plate 40 is clamped on the reinforcing plate 121 , and an upwardly extending boss 41 is formed on the upper end of the end plate 40 . The length of the boss 41 is less than that of the end plate 40 , and the upper end of the boss 41 abuts against the lower surface of the first cold plate 30 .

[0052] According to some optional embodiments of the present invention, referring to Figure 3 and Figure 4 The number of the end plates 40 is multiple, that is, the number of the end plates 40 can be two, three, four or more, and the multiple end plates 40 are arranged along the length direction of the reinforcing plate 121 (such as Figure 4 Thus, the number of end plates 40 can be adjusted according to actual needs, thereby increasing the freedom of designing the length of the end plates 40.

[0053] According to some embodiments of the present invention, referring to Figure 1The battery pack 100 further includes: a first battery module and a second battery module, the first battery module is supported on the first cold plate 30, and the second battery module is arranged in the mounting cavity. Thus, the first battery module and the second battery module form a double-layer module, thereby increasing the energy density of the battery pack 100 and ensuring the storage capacity of the battery pack 100. At the same time, the first cold plate 30 can cool the first battery module and the second battery module, thereby effectively preventing the first battery module and the second battery module from thermal runaway.

[0054] Furthermore, if Figure 1 and Figure 3 As shown, the battery pack 100 may further include: a second cold plate 50, the second cold plate 50 is arranged at the bottom of the installation cavity, and the second battery module is supported on the second cold plate 50. Therefore, the second cold plate 50 can perform heat exchange on the second battery module, thereby further preventing the second battery module from thermal runaway, and further ensuring the safety of the battery pack 100.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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 box body, wherein a mounting cavity is formed in the box body, an opening communicating with the mounting cavity is formed at the top of the box body, and a first convex portion is formed on at least a portion of the periphery of the opening; A bracket, the bracket is arranged around the periphery of the open mouth, a plurality of second protrusions are arranged on the bracket, and the second protrusions are connected to the first protrusions; A first cold plate is disposed on the bracket.

2. The battery pack according to claim 1, characterized in that: The first protrusion extends toward the installation cavity, and there are a plurality of the first protrusions, which are arranged at intervals along the circumference of the opening. The second protrusion extends toward the circumference of the open mouth, there are multiple second protrusions, the multiple second protrusions are arranged at intervals along the circumference of the bracket, and the number of the first protrusions corresponds to the number of the second protrusions.

3. The battery pack according to claim 2, characterized in that: The second protrusion overlaps the first protrusion, and the second protrusion is threadedly connected to the first protrusion.

4. The battery pack according to claim 1, characterized in that: The bracket is formed in a rectangular ring shape, and a first reinforcing beam is formed on the bracket, and two ends of the first reinforcing beam are connected to the bracket.

5. The battery pack according to claim 1, characterized in that: A through hole is formed on the bracket, and the through hole penetrates the bracket along the thickness direction of the bracket, so that the wire harness in the installation cavity passes through the through hole.

6. The battery pack according to claim 1, characterized in that: A plurality of second reinforcing beams are formed in the box body, and the plurality of second reinforcing beams are arranged at intervals in the box body.

7. The battery pack according to claim 6, characterized in that: At least one of the second reinforcing beams is formed as a reinforcing plate, the reinforcing plate extends vertically, and a top end of the reinforcing plate supports the first cold plate.

8. The battery pack according to claim 7, characterized in that: An end plate is provided between the reinforcing plate and the first cold plate, the lower end of the end plate is connected to the reinforcing plate, a boss is formed on the end plate, the boss extends toward the first cold plate, and the upper end of the boss abuts against the lower surface of the first cold plate.

9. The battery pack according to claim 8, characterized in that: There are multiple end plates, and the multiple end plates are arranged in sequence along the length direction of the reinforcing plate.

10. The battery pack according to claim 1, characterized in that: Also includes: A first battery module and a second battery module, wherein the first battery module is supported on the first cold plate and the second battery module is disposed in the mounting cavity.

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