Box body, box shell and air-cooled battery pack

Abstract

The utility model discloses a box body, a box shell and an air-cooled battery pack, and belongs to the technical field of batteries. The box body comprises a bottom plate and a side plate surrounding the periphery of the bottom plate, the side plate comprises a side plate body and a mounting seat integrally formed with the side plate body, the mounting seat is provided with a mounting space for mounting a fan, and the fan is mounted in the mounting space and fixedly connected with the mounting seat. According to the box body, the mounting seat for mounting the fan is directly and integrally formed on the side plate, so that the fan can be directly mounted on the box body, a fan mounting frame does not need to be additionally arranged, the assembly efficiency can be improved, the lightweight design of the battery pack can be realized, and the energy density of the battery pack can be improved. According to the box shell, by applying the box body, the lightweight design can be achieved, installation of the fan is facilitated, and the assembly efficiency is improved. According to the air-cooled battery pack, by applying the box shell, the assembly efficiency can be improved, the lightweight design of the battery pack can be realized, and the energy density of the battery pack is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a box body, a box shell and an air-cooled battery pack. Background Art

[0002] The air-cooled battery pack includes a box shell, a battery module and a fan. The box shell includes a box body and a cover plate detachably mounted on the access opening of the box body. The battery module is mounted in the box shell, and the fan is mounted on the box body through an additional fan mounting frame. However, the solution of adding an additional fan mounting frame increases the assembly process of the air-cooled battery pack, the assembly efficiency is low, and the weight of the air-cooled battery pack is increased, and the energy density is reduced.

[0003] Therefore, there is an urgent need to provide a box body, a box shell and an air-cooled battery pack to solve the above problems. Utility Model Content

[0004] One purpose of the present application is to provide a box body, a box shell and an air-cooled battery pack, which can improve assembly efficiency, realize a lightweight design of the battery pack, and increase the energy density of the battery pack.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, a box is provided for air-cooling a battery pack, the air-cooling battery pack comprising a fan, the box comprising a bottom plate and a side plate arranged around the bottom plate, the side plate comprising:

[0007] Side panel body;

[0008] The mounting seat has a mounting opening. The mounting seat and the side plate body are an integrally formed structure. The mounting seat has an installation space for installing the fan. The fan is installed in the installation space and fixedly connected to the mounting seat.

[0009] As an optional scheme for the box body, the mounting base includes a first bracket and a second bracket, the first bracket and the second bracket are respectively located on both sides of the fan, and are both integrally connected to the side panel body, the first bracket and the second bracket cooperate to form the mounting space connected to the mounting port, and the first bracket and the second bracket are both fixedly connected to the fan.

[0010] As an optional scheme for the box body, the first bracket includes a first connecting portion and a first fixing portion that are vertically connected, the first connecting portion is integrally connected to the side panel body, and the first fixing portion is fixedly connected to the fan; the second bracket includes a second connecting portion and a second fixing portion that are vertically connected, the second connecting portion is integrally connected to the side panel body and is arranged parallel to and spaced apart from the first connecting portion, and the second fixing portion is fixedly connected to the fan.

[0011] As an optional solution for the box body, the first connecting portion and the second connecting portion are both parallel to the bottom plate.

[0012] As an optional solution for the box body, the mounting seat is integrally formed by punching and bending a plate.

[0013] In a second aspect, a box shell is provided, comprising a cover plate and a box body as described in any one of the above items, wherein the side plates of the box body are arranged to form a take-in and put-out opening, and the cover plate is detachably covered on the take-in and put-out opening.

[0014] In a third aspect, an air-cooled battery pack is provided, comprising a fan, a battery module and a box shell as described above, wherein the fan is mounted on a mounting seat of the box shell, and the fan and the battery module are both mounted in the box shell.

[0015] As an optional solution of the air-cooled battery pack, the air-cooled battery pack further includes a battery management unit, which is installed in the box shell and located above the battery module.

[0016] As an optional solution for the air-cooled battery pack, the side panel body of the box shell also has a maintenance port, which is located on one side of the installation port and corresponds to the battery management unit.

[0017] As an optional solution for the air-cooled battery pack, the box body also includes a maintenance window plate, which is detachably mounted on the side panel body and covers the mounting port and the maintenance port, and the maintenance window plate has an opening connected to the inlet end or the outlet end of the fan.

[0018] The beneficial effects of this application are:

[0019] The box provided by the present application includes a bottom plate and a side plate arranged around the bottom plate, the side plate includes a side plate body and a mounting seat integrally formed with the side plate body, the mounting seat has an installation space for installing a fan, the fan is installed in the installation space and fixedly connected to the mounting seat. The box directly forms an integral mounting seat for installing a fan on the side plate, the fan can be directly installed on the box without adding a fan mounting frame, the assembly efficiency can be improved, and the lightweight design of the battery pack can be realized, and the energy density of the battery pack can be improved.

[0020] The box shell provided in the present application can achieve a lightweight design by applying the above-mentioned box body, and is convenient for installing the fan and improving assembly efficiency.

[0021] The air-cooled battery pack provided in the present application can improve assembly efficiency by applying the above-mentioned box shell, and can realize a lightweight design of the battery pack and enhance the energy density of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present application and these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the structure of the air-cooled battery pack provided by the present application is shown;

[0024] Figure 2 An exploded schematic diagram of an air-cooled battery pack provided by the present application is shown;

[0025] Figure 3 A schematic diagram of the partial structure of the box provided by the present application in one direction is shown;

[0026] Figure 4 A schematic diagram of the partial structure of the box provided by the present application in another direction is shown;

[0027] Figure 5 A partial cross-sectional schematic diagram of the air-cooled battery pack provided in the present application is shown.

[0028] Reference numerals:

[0029] 100, box shell; 101, box body; 1011, wire outlet hole; 102, cover plate; 103, maintenance window plate; 1031, opening; 1032, wire inlet hole; 200, battery module; 300, battery management unit; 400, fan; 500, wiring parts;

[0030] 1. Bottom plate;

[0031] 2. Side panel; 21. Side panel body; 211. Installation port; 212. Maintenance port; 22. Mounting seat; 221. First bracket; 2211. First connecting portion; 2212. First fixing portion; 222. Second bracket; 2221. Second connecting portion; 2222. Second fixing portion. DETAILED DESCRIPTION

[0032] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0033] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0034] In this application, the term "and / or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "and / or" relationship.

[0035] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0036] In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0037] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0038] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0039] Figure 1 A schematic structural diagram of the air-cooled battery pack provided in the present application is shown. Figure 2 The exploded schematic diagram of the air-cooled battery pack provided by the present application is shown. Figure 1 to Figure 2 As shown, the air-cooled battery pack provided in the present application includes a box shell 100, a battery module 200 and a fan 400. The battery module 200 is installed in the box shell 100, and the fan 400 is installed on the box shell 100. The box shell 100 has an air inlet connected to the air inlet end of the fan 400 and an air outlet connected to the air outlet end of the fan 400, so as to achieve air cooling and heat dissipation of electrical components such as the battery module 200 in the box shell 100.

[0040] For ease of description, see Figure 1 , the height directions of the box shell 100 are defined as "up" and "down", the end of the box shell 100 with the fan 400 is defined as "front", the end opposite to the "front" is defined as "rear", and the other two sides of the box shell 100 are defined as "left" and "right".

[0041] In order to facilitate the assembly between the battery module 200 and the box shell 100, the box shell 100 includes a box body 101 and a cover plate 102. The upper end of the box body 101 has a take-in and take-out opening, and the cover plate 102 is detachably covered on the take-in and take-out opening of the box body 101. During assembly, the battery module 200 is first installed in the box body 101, and then the cover plate 102 is covered on the take-in and take-out opening of the box body 101, and the cover plate 102 is detachably fixedly connected to the box body 101 with screws.

[0042] In addition, the box shell 100 also includes handles, and two handles are symmetrically installed on the front side of the side plate 2 of the box body 101. The handles are used to facilitate the operator to adjust the position of the air-cooled battery pack.

[0043] Figure 3 A schematic diagram of the partial structure of the box body 101 provided by the present application in one direction is shown. Figure 4 FIG. 1 shows a schematic diagram of a partial structure of the box 101 provided by the present application in another direction. Figure 3 to Figure 4 Combined with Figure 2 As shown, the box body 101 includes a bottom plate 1 and a side plate 2 arranged around the bottom plate 1. The side plate 2 includes a side plate body 21 and a mounting seat 22 integrally formed with the side plate body 21. The mounting seat 22 has a mounting opening 211, and the mounting seat 22 has a mounting space for mounting a fan 400. The fan 400 is installed into the mounting space from the mounting opening 211 and fixedly connected to the mounting seat 22. The box body 101 directly forms the mounting seat 22 for mounting the fan 400 integrally on the side plate 2, and the fan 400 can be directly mounted on the box body 101 without adding a fan 400 mounting frame, which can improve assembly efficiency, realize a lightweight design of the battery pack, and improve the energy density of the battery pack.

[0044] In this embodiment, the mounting base 22 includes a first bracket 221 and a second bracket 222. The first bracket 221 and the second bracket 222 are respectively located on both sides of the fan 4 and are both integrally connected to the side panel body 21. The first bracket 221 and the second bracket 222 cooperate to form an installation space connected to the installation port 211. The first bracket 221 and the second bracket 222 are both fixedly connected to the fan 400 to ensure that the fan 400 is stably installed.

[0045] Furthermore, the first bracket 221 includes a vertically connected first connection portion 2211 and a first fixing portion 2212, the first connection portion 2211 is integrally connected to the side panel body 21, and the first fixing portion 2212 is fixedly connected to the fan 400; the second bracket 222 includes a vertically connected second connection portion 2221 and a second fixing portion 2222, the second connection portion 2221 is integrally connected to the side panel body 21 and is arranged parallel to and spaced apart from the first connection portion 2211, and the second fixing portion 2222 is fixedly connected to the fan 400.

[0046] In this embodiment, the first connection portion 2211 and the second connection portion 2221 are parallel to the bottom plate 1, and the first bracket 221 and the second bracket 222 are respectively located on the upper and lower sides of the fan 400. In other embodiments, the first connection portion 2211 and the second connection portion 2221 may also be perpendicular to the bottom plate 1, and the first bracket 221 and the second bracket 222 are respectively located on the left and right sides of the fan 400.

[0047] In this embodiment, the box body 101 is formed in one piece by punching, cutting and bending a plate, that is, the entire box body 101 is formed in one piece by punching, cutting and bending a complete plate, and no screws are required for connection, which can also ensure the overall structural strength of the box body 101 and achieve a lightweight design of the box body 101. In other words, the mounting seat 22 is also formed in one piece by punching, cutting and bending a plate.

[0048] Figure 5 FIG. 1 shows a partial cross-sectional schematic diagram of an air-cooled battery pack provided by the present application. Figure 5 Combination Figure 2 As shown, the air-cooled battery pack also includes a battery management unit 300, which is installed in the box shell 100 and is located above the battery module 200. The collection harness of the battery module 200 extends from the upper end of the battery module 200 and is connected to the battery management unit 300, which can shorten the length of the collection harness between the battery module 200 and the battery management unit 300 and avoid harness confusion. The harness is located in the box shell 100, which can slow down the aging rate of the harness and increase the service life of the harness.

[0049] like Figure 5 Combination Figure 3 As shown, the side panel body 21 of the box body 101 also has a maintenance port 212, which is located above the mounting port 211 and corresponds to the battery management unit 300. The maintenance port 212 is used to facilitate subsequent maintenance of the battery management unit 300. Of course, in other embodiments, the maintenance port 212 can also be located at other positions of the mounting port 211, as long as it is located on one side of the mounting port 211 and does not affect the installation of the fan 400, and there is no limitation here.

[0050] The housing 100 further includes a maintenance window plate 103, which is detachably mounted on the side panel body 21 and covers the mounting port 211 and the maintenance port 212. The maintenance window plate 103 has an opening 1031 connected to the inlet end or the outlet end of the fan 400. By setting the maintenance window plate 103, not only can the fan 400 be set up internally to reduce the risk of the fan 400 being short-circuited due to dripping water, but also when the fan 400 draws air into the housing 100, the maintenance window plate 103 can also prevent large particles of debris from entering the fan 400, thereby ensuring the stable operation of the fan 400.

[0051] The air-cooled battery pack also includes a wiring member 500, which is installed on the side plate 2 of the box body 101. The wiring member 500 has a wiring groove for the external wiring harness to pass through. The side plate 2 has a wire entry hole 1032 connected to the wiring groove, and the maintenance window plate 103 has a wire exit hole 1011 connected to the wiring groove, so that the external wiring harness can enter the box shell 100, and the wiring harness in the box shell 100 can be extended from the wire exit hole 1011, which can effectively avoid the problem of messy wiring harnesses and reduce the risk of wiring harness contact short circuit. In addition, the wire exit hole 1011 is located on the side of the side plate 2 close to the battery management unit 300 to shorten the length of the external wiring harness of the battery management unit 300, avoid confusion caused by excessive wiring harness length, and reduce the cost of the wiring harness.

[0052] In summary, the air-cooled battery pack provided in the present application has the following advantages: 1) The battery management unit 300 and the fan 400 are built-in, and with the help of the protection level of the box shell 100 itself, the risk of condensation and failure is greatly reduced, and the overall service life of the battery pack and even the system is improved. 2) The battery management unit 300 is installed above the battery module 200, and the collection harness of the battery module 200 can be directly connected to the battery management unit 300 without passing through the air duct between the battery modules 200, and there is no need to worry about the aging of the harness due to the influence of hot air. 3) The battery management unit 300 and the external wiring can effectively avoid the fan 400 through the wiring groove, and there is no need to worry about the aging of the harness due to the influence of hot air.

[0053] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present application.

Claims

1. A box for air-cooling a battery pack, the air-cooling battery pack comprising a fan (400), characterized in that: The box body comprises a bottom plate (1) and a side plate (2) arranged around the bottom plate (1), wherein the side plate (2) comprises: Side plate body (21); The mounting seat (22) has a mounting opening (211); the mounting seat (22) and the side plate body (21) are an integrally formed structure; the mounting seat (22) has a mounting space for mounting the fan (400); the fan (400) is installed in the mounting space and fixedly connected to the mounting seat (22).

2. The box according to claim 1, characterized in that: The mounting seat (22) comprises a first bracket (221) and a second bracket (222); the first bracket (221) and the second bracket (222) are respectively located on two sides of the fan (400) and are both integrally connected to the side panel body (21); the first bracket (221) and the second bracket (222) cooperate to form the mounting space connected to the mounting opening (211); the first bracket (221) and the second bracket (222) are both fixedly connected to the fan (400).

3. The box according to claim 2, characterized in that: The first bracket (221) comprises a first connecting portion (2211) and a first fixing portion (2212) which are vertically connected, the first connecting portion (2211) being integrally connected to the side plate body (21), and the first fixing portion (2212) being fixedly connected to the fan (400); The second bracket (222) comprises a second connecting portion (2221) and a second fixing portion (2222) which are vertically connected, the second connecting portion (2221) being integrally connected to the side panel body (21) and being arranged parallel to and spaced from the first connecting portion (2211), and the second fixing portion (2222) being fixedly connected to the fan (400).

4. The box according to claim 3, characterized in that: The first connecting portion (2211) and the second connecting portion (2221) are both parallel to the bottom plate (1).

5. The box according to any one of claims 1 to 4, characterized in that: The mounting seat (22) is integrally formed by punching, bending and forming a plate.

6. A box shell, characterized in that: It comprises a cover plate (102) and a box body as claimed in any one of claims 1 to 5, wherein the side plates (2) of the box body are arranged to form a take-in and put-out opening, and the cover plate (102) is detachably covered on the take-in and put-out opening.

7. An air-cooled battery pack, characterized in that: It comprises a fan (400), a battery module (200) and a casing as claimed in claim 6, wherein the fan (400) is mounted on a mounting seat (22) of the casing, and the fan (400) and the battery module (200) are both mounted in the casing.

8. The air-cooled battery pack according to claim 7, characterized in that: The air-cooled battery pack further comprises a battery management unit (300), wherein the battery management unit (300) is installed in the box shell and is located above the battery module (200).

9. The air-cooled battery pack according to claim 8, characterized in that: The side plate body (21) of the housing further comprises a maintenance port (212), wherein the maintenance port (212) is located on one side of the installation port (211) and corresponds to the battery management unit (300).

10. The air-cooled battery pack according to claim 9, characterized in that: The box body also includes a maintenance window plate (103), which is detachably mounted on the side panel body (21) and covers the mounting port (211) and the maintenance port (212), and has an opening (1031) connected to an inlet end or an outlet end of the fan (400).

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