Battery pack

Abstract

The utility model discloses a battery pack. The battery pack comprises an outer shell, a liquid cooling plate, a battery cell module, a mounting bracket, a BMS (Battery Management System) module and a temperature monitoring module, wherein a mounting cavity is formed in the outer shell, the liquid cooling plate is arranged in the mounting cavity, the battery cell module is arranged in the mounting cavity, and the battery cell module is located at the top of the liquid cooling plate. The mounting bracket is arranged in the mounting cavity, is connected with one end of the battery cell module and is positioned at the top of the liquid cooling plate. The BMS module and the temperature monitoring module are both electrically connected with the battery cell module, the BMS module and the temperature monitoring module are integrally arranged, and the BMS module and the temperature monitoring module are fixed to the side, away from the battery cell module, of the mounting bracket. The battery pack disclosed by the utility model solves the problem of low space utilization rate in the battery pack in the prior art.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a battery pack. Background Art

[0002] In existing battery packs, since the electronic control modules are separately arranged, each electronic control module needs to occupy a certain amount of space in the battery pack, resulting in low space utilization in the battery pack. Utility Model Content

[0003] The main purpose of the present application is to provide a battery pack to at least solve the problem of low space utilization in the battery pack in the prior art.

[0004] According to one aspect of the present application, a battery pack is provided, comprising:

[0005] An outer shell having a mounting cavity provided therein;

[0006] a liquid cooling plate, the liquid cooling plate being arranged in the installation cavity;

[0007] A battery cell module, the battery cell module is arranged in the installation cavity, and the battery cell module is located on top of the liquid cooling plate;

[0008] A mounting bracket, the mounting bracket being disposed in the mounting cavity, the mounting bracket being connected to one end of the battery cell module, and the mounting bracket being located on top of the liquid cooling plate;

[0009] A BMS module and a temperature monitoring module, wherein the BMS module and the temperature monitoring module are both electrically connected to the battery cell module, the BMS module and the temperature monitoring module are integrally arranged, and the BMS module and the temperature monitoring module are fixed on a side of the mounting bracket away from the battery cell module.

[0010] Furthermore, a liquid inlet is provided on the liquid cooling plate, and a relief portion is provided on a side of the mounting bracket close to the liquid inlet.

[0011] Furthermore, the avoidance portion includes an avoidance gap.

[0012] Furthermore, the mounting bracket includes a top wall and a first side wall and a second side wall arranged opposite to each other along a first direction, a first flange is provided on the top wall, a second flange is provided on the first side wall, and a third flange is provided on the second side wall, and the first flange, the second flange and the third flange are all folded toward the side of the mounting bracket away from the battery cell module.

[0013] Furthermore, the mounting bracket further includes a first insulating film, and the first insulating film is provided on at least one of the first flange, the second flange, and the third flange.

[0014] Furthermore, a maintenance window is provided on a side wall of the outer shell facing the BMS module and the temperature monitoring module. A cover is provided on the maintenance window. The cover has a first position for closing the maintenance window and a second position for opening the maintenance window.

[0015] Furthermore, the battery pack further includes a gas detector, which is fixed to the mounting bracket and is used to monitor the concentration of combustible gas in the battery pack.

[0016] Furthermore, the mounting bracket is provided with a mounting hole and a wire hole, and the wire hole is used to avoid the wiring harness of the BMS module and the temperature monitoring module;

[0017] The battery pack further includes a fixing member, and the BMS module and the temperature monitoring module are fixed to the mounting bracket through the fixing member and the mounting hole.

[0018] Furthermore, the mounting bracket includes a main section and a bending section that are connected to each other, the main section and the bending section are arranged in an L-shape, the main section extends along the height direction of the battery pack, and the bending section extends along the mounting bracket away from the battery cell module. The bending section is connected to the liquid cooling plate, and the BMS module and the temperature monitoring module are fixed on the main section.

[0019] Furthermore, the mounting bracket further includes a second insulating film, and the second insulating film is arranged on a side of the mounting bracket close to the battery cell module.

[0020] Compared with the prior art, the BMS module and the temperature monitoring module in this application are integrated into one, and both the BMS module and the temperature monitoring module are fixed on the mounting bracket, thereby improving the space utilization of the battery pack to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 A schematic diagram of the structure of the battery pack disclosed in this application;

[0023] Figure 2 A schematic diagram of a portion of the structure of the battery pack disclosed in this application (with the cover removed);

[0024] Figure 3This is a schematic diagram of the assembly of the mounting bracket, BMS module, temperature monitoring module, and gas detector disclosed in this application;

[0025] Figure 4 This is a schematic structural diagram of the mounting bracket disclosed in this application at a first viewing angle;

[0026] Figure 5 This is a schematic structural diagram of the mounting bracket disclosed in this application at a second viewing angle;

[0027] Figure 6 This is a schematic diagram of the assembly of the mounting bracket and the first insulating film disclosed in this application.

[0028] The above drawings include the following reference numerals:

[0029] 10. Outer shell; 11. Mounting cavity; 12. Liquid inlet channel; 20. Mounting bracket; 21. Top wall; 22. First side wall; 23. Second side wall; 24. Avoidance portion; 25. First insulating film; 26. Second insulating film; 27. Wire hole; 28. Mounting hole; 30. BMS module; 40. Temperature monitoring module; 50. Fixing part; 60. Gas detector; 101. Maintenance window; 102. Cover; 201. Main body section; 202. Bending section; 211. First flange; 221. Second flange; 231. Third flange. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] 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, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary, not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0033] See also Figures 1 to 6 As shown, according to an embodiment of the present application, a battery pack is provided, which includes an outer shell 10, a liquid cooling plate (not shown in the figure), a battery cell module (not shown in the figure), a mounting bracket 20, a BMS module 30 and a temperature monitoring module 40.

[0034] The outer shell 10 is provided with a mounting cavity 11, a liquid cooling plate is provided in the mounting cavity 11, a battery module is provided in the mounting cavity 11, and the battery module is located on top of the liquid cooling plate. A mounting bracket 20 is provided in the mounting cavity 11, connected to one end of the battery module, and located on top of the liquid cooling plate. The BMS module 30 and the temperature monitoring module 40 are both electrically connected to the battery module, and the BMS module 30 and the temperature monitoring module 40 are integrally provided and fixed to the side of the mounting bracket 20 facing away from the battery module.

[0035] Specifically, the liquid cooling plate contains coolant, and the battery cell modules and mounting bracket 20 are both mounted on the liquid cooling plate. This allows the liquid cooling plate to dissipate heat from the battery cell modules and mounting bracket 20, thereby preventing the battery pack from overheating. Furthermore, in this embodiment, the BMS module 30 and the temperature monitoring module 40 are integrated and fixed to the mounting bracket 20, thereby improving the space utilization of the battery pack to a certain extent.

[0036] In addition, the battery pack also includes a voltage acquisition module, which is integrated with the BMS module 30 and is also mounted on the mounting bracket 20, further improving the space utilization of the battery pack.

[0037] Furthermore, a liquid inlet is provided on the liquid cooling plate, and a relief portion 24 is provided on a side of the mounting bracket 20 close to the liquid inlet.

[0038] Specifically, a liquid inlet channel 12 is provided on the outer shell 10, and the liquid inlet channel 12 is connected to the liquid inlet of the liquid cooling plate. In order to avoid interference with the liquid inlet channel 12 caused by the installation bracket 20 installed on the liquid cooling plate, an avoidance portion 24 is provided on the side of the installation bracket 20 close to the liquid inlet.

[0039] As attached Figure 3 As shown, the relief portion 24 includes a relief notch, which can be a rectangular notch, a circular notch, or a trapezoidal notch. In this embodiment, the relief notch is a quasi-rectangular notch, that is, the quasi-rectangular notch is replaced with rounded corners at the four corners of the rectangular notch. The rounded corners provide a smooth contact surface between the mounting bracket 20 and the liquid inlet channel 12, thereby preventing the mounting bracket 20 from affecting the liquid inlet channel 12. It will be understood that the relief notch in this embodiment is formed by cutting out the side of the mounting bracket near the liquid inlet.

[0040] Furthermore, the mounting bracket 20 includes a top wall 21 and a Figure 3 The first side wall 22 and the second side wall 23 are relatively arranged in the X direction, the top wall 21 is provided with a first flange 211, the first side wall 22 is provided with a second flange 221, and the second side wall 23 is provided with a third flange 231, and the first flange 211, the second flange 221 and the third flange 231 are all folded toward the side of the mounting bracket 20 away from the battery cell module.

[0041] Specifically, on the one hand, the provision of the first flange 211, the second flange 221 and the third flange 231 can improve the structural strength of the mounting bracket 20 to a certain extent; on the other hand, after the first flange 211, the second flange 221 and the third flange 231 are folded toward the side of the mounting bracket 20 away from the battery cell module, there are wiring harness channels between the first flange 211 and the top wall 21, between the second flange 221 and the first side wall 22, and between the third flange 231 and the second side wall 23 for the wiring harness to pass through. When the wiring harness passes through the wiring harness, the first flange 211, the second flange 221 and the third flange 231 can protect the wiring harness, thereby preventing other components in the battery pack from contacting the wiring harness, and ultimately causing the wiring harness to be worn and damaged.

[0042] In this embodiment, the mounting bracket 20 further includes a first insulating film 25 , which is disposed on at least one of the first flange 211 , the second flange 221 , and the third flange 231 .

[0043] Specifically, the first insulating film 25 can further prevent other components in the battery pack from rubbing against the wiring harness running through the wiring harness channel. Exemplarily, the first insulating film 25 can be made of polytetrafluoroethylene tape, which has good wear resistance and insulation properties, and can improve the wear resistance and insulation of the wiring harness to a certain extent. Of course, the first insulating film 25 can also be made of polycarbonate film. In addition, the first insulating film 25 can be only provided on the periphery of the first flange 211, the second flange 221 or the third flange 231, and the first insulating film 25 can also be provided on part of the periphery of the first flange 211, part of the periphery of the second flange 221 and part of the periphery of the third flange 231, for example, Figure 6 shown.

[0044] Furthermore, a maintenance window 101 is provided on the side wall of the outer shell 10 facing the BMS module 30 and the temperature monitoring module 40 . A cover 102 is provided on the maintenance window 101 . The cover 102 has a first position for closing the maintenance window 101 and a second position for opening the maintenance window 101 .

[0045] Specifically, when the BMS module 30 or the temperature monitoring module 40 in the battery pack is damaged, the maintenance personnel can move the cover 102 to the second position to open the maintenance window 101, and repair the BMS module 30 or the temperature monitoring module 40 through the maintenance window 101, thereby improving the convenience of maintenance of the battery pack. In addition, when the cover 102 is in the first position, the cover 102 closes the maintenance window 101, thereby preventing external dust or other impurities from entering the battery pack. In some embodiments, a seal is also provided at the opening of the maintenance window 101. When the cover 102 closes the maintenance window 101, the cover 102 is sealed and connected to the maintenance window 101, further improving the protection performance of the battery pack. In some embodiments, the cover 102 is connected to the outer shell 10 via a rotating shaft.

[0046] As attached Figure 3 As shown, the battery pack further includes a gas detector 60 , which is fixed to the mounting bracket 20 . The gas detector 60 is used to monitor the concentration of combustible gas in the battery pack.

[0047] As will be appreciated, the gas detector 60 is used to monitor the concentration of flammable gases within the battery pack. When the flammable gas concentration exceeds a specific threshold, the gas detector 60 issues an alarm, notifying the user to take timely action, thereby enhancing the safety of the battery pack to a certain extent. The flammable gases within the battery pack include at least one of hydrogen, carbon monoxide, methane, and toluene. In this embodiment, the gas detector 60 can monitor the concentration of each of these flammable gases.

[0048] Furthermore, a mounting hole 28 and a wire hole 27 are provided on the mounting bracket 20. The wire hole 27 is used to avoid the wiring harness of the BMS module 30 and the temperature monitoring module 40. The battery pack also includes a fixing 50. The BMS module 30 and the temperature monitoring module 40 are fixed to the mounting bracket 20 through the fixing 50 through the mounting hole 28.

[0049] Specifically, the BMS module 30 and the temperature monitoring module 40 are both electrically connected to the cell module via a wiring harness. In this embodiment, in order to facilitate maintenance of the BMS module 30 and the temperature monitoring module 40, the BMS module 30 and the temperature monitoring module 40 are both fixed to the side of the mounting bracket 20 that is away from the cell module, so that the BMS module 30 and the temperature monitoring module 40 can face the maintenance window 101. In other words, a wire hole 27 needs to be provided on the mounting bracket 20 so that the wiring harness can pass through the mounting bracket 20 and connect to the BMS module 30 or the temperature monitoring module 40. In addition, in this embodiment, the projection surface of each mounting hole 28 in the direction away from the cell module falls within the projection surface of the maintenance window 101 in the direction away from the cell module. In other words, maintenance personnel can directly remove the BMS module 30 and the temperature monitoring module 40 from the mounting bracket 20 through the maintenance window 101, thereby improving the maintenance efficiency of the battery pack.

[0050] Furthermore, the mounting bracket 20 includes a main section 201 and a bending section 202 that are connected to each other. The main section 201 and the bending section 202 are arranged in an L shape. The main section 201 extends along the height direction of the battery pack, and the bending section 202 extends along the mounting bracket 20 away from the battery cell module. The bending section 202 is connected to the liquid cooling plate, and the BMS module 30 and the temperature monitoring module 40 are fixed on the main section 201.

[0051] In this embodiment, the bent section 202 is arranged in an L-shape with the main section 201, and the bent section 202 is used to connect to the liquid cooling plate, thereby ensuring a larger contact area between the mounting bracket 20 and the liquid cooling plate, thereby improving the stability of the connection between the mounting bracket 20 and the liquid cooling plate. Specifically, the bent section 202 is provided with a connection hole, and the mounting bracket 20 also includes a connecting member, which passes through the connection hole and the liquid cooling plate in sequence to secure the mounting bracket 20 to the liquid cooling plate. In addition, the plurality of connection holes are spaced apart along the first direction, and the plurality of connecting members are also provided, with the plurality of connecting members corresponding to the plurality of connection holes.

[0052] Furthermore, the mounting bracket 20 further includes a second insulating film 26 , which is disposed on a side of the mounting bracket 20 close to the battery cell module.

[0053] Specifically, the battery cell module also includes a copper busbar (not shown in the figure), which is arranged on the side of the battery cell module close to the mounting bracket 20. In order to prevent the copper busbar from being too close to the mounting bracket 20, causing the copper busbar to contact the conductive parts on the mounting bracket 20, thereby causing a short circuit in the conductive parts, a second insulating film 26 is provided on the side of the mounting bracket 20 close to the battery cell module in this embodiment. The second insulating film 26 can prevent the copper busbar from contacting the conductive parts on the mounting bracket 20.

[0054] In summary, the BMS module 30 and the temperature monitoring module 40 in the battery pack of the present application are integrally arranged, and both the BMS module 30 and the temperature monitoring module 40 are mounted on the mounting bracket 20, thereby improving the space utilization of the battery pack to a certain extent. In addition, a maintenance window 101 is provided on the outer shell 10 of the battery pack. The maintenance window 101 is directly opposite the BMS module 30 and the temperature monitoring module 40. When maintenance of the BMS module 30 and the temperature monitoring module 40 is required, it is only necessary to open the cover 102 and perform maintenance on the BMS module 30 and the temperature monitoring module 40 through the maintenance window 101, thereby improving the maintenance convenience of the battery pack. In addition, the mounting bracket 20 of the present application is provided with a first flange 211, a second flange 221, and a third flange 231 on the top wall 21, the first side wall 22, and the second side wall 23, respectively. The top wall 21 and the first flange 211, the first side wall 22 and the second flange 221, and the second side wall 23 and the third flange 231 all form a wiring harness channel for the wiring harness to pass through. The wiring harness passes through the wiring harness channel, thereby preventing friction between the wiring harness and other components in the battery pack, which may ultimately cause the wiring harness to wear and damage. Furthermore, in this embodiment, at least one of the first flange 211, the second flange 221, and the third flange 231 is covered with a first insulating film 25, thereby improving the insulation and wear resistance of the wiring harness passing through the wiring harness channel.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0057] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A battery pack, characterized in that: include: An outer shell (10), wherein a mounting cavity (11) is provided in the outer shell (10); a liquid cooling plate, the liquid cooling plate being arranged in the installation cavity (11); A battery core module, the battery core module being arranged in the mounting cavity (11), and the battery core module being located on top of the liquid cooling plate; a mounting bracket (20), the mounting bracket (20) being disposed in the mounting cavity (11), the mounting bracket (20) being connected to one end of the battery module, and the mounting bracket (20) being located on top of the liquid cooling plate; A BMS module (30) and a temperature monitoring module (40), wherein the BMS module (30) and the temperature monitoring module (40) are both electrically connected to the battery cell module, the BMS module (30) and the temperature monitoring module (40) are integrally arranged, and the BMS module (30) and the temperature monitoring module (40) are fixed on a side of the mounting bracket (20) facing away from the battery cell module.

2. The battery pack according to claim 1, wherein: A liquid inlet is provided on the liquid cooling plate, and a side of the mounting bracket (20) close to the liquid inlet is provided with an avoidance portion (24).

3. The battery pack according to claim 2, wherein: The avoidance portion (24) includes an avoidance gap.

4. The battery pack according to claim 1, wherein: The mounting bracket (20) comprises a top wall (21) and a first side wall (22) and a second side wall (23) arranged opposite to each other along a first direction; the top wall (21) is provided with a first flange (211), the first side wall (22) is provided with a second flange (221), and the second side wall (23) is provided with a third flange (231); and the first flange (211), the second flange (221) and the third flange (231) are all folded toward a side of the mounting bracket (20) away from the battery module.

5. The battery pack according to claim 4, characterized in that: The mounting bracket (20) further includes a first insulating film (25), wherein the first insulating film (25) is provided on at least one of the first flange (211), the second flange (221), and the third flange (231).

6. The battery pack according to claim 1, wherein: A maintenance window (101) is provided on a side wall of the outer shell (10) facing the BMS module (30) and the temperature monitoring module (40), and a cover (102) is provided on the maintenance window (101). The cover (102) has a first position for closing the maintenance window (101) and a second position for opening the maintenance window (101).

7. The battery pack according to claim 1, wherein: The battery pack further comprises a gas detector (60), which is fixed to the mounting bracket (20) and is used to monitor the concentration of combustible gas in the battery pack.

8. The battery pack according to any one of claims 1 to 7, characterized in that: The mounting bracket (20) is provided with a mounting hole (28) and a wire hole (27), and the wire hole (27) is used to avoid the wiring harness of the BMS module (30) and the temperature monitoring module (40); The battery pack further comprises a fixing member (50), and the BMS module (30) and the temperature monitoring module (40) are fixed on the mounting bracket (20) through the fixing member (50) and the mounting hole (28).

9. The battery pack according to any one of claims 1 to 7, characterized in that: The mounting bracket (20) comprises a main section (201) and a bending section (202) connected to each other, the main section (201) and the bending section (202) being arranged in an L-shape, the main section (201) extending along the height direction of the battery pack, the bending section (202) extending in a direction away from the battery cell module along the mounting bracket (20), the bending section (202) being connected to the liquid cooling plate, and the BMS module (30) and the temperature monitoring module (40) being fixed on the main section (201).

10. The battery pack according to any one of claims 1 to 7, characterized in that: The mounting bracket (20) further includes a second insulating film (26), and the second insulating film (26) is arranged on a side of the mounting bracket (20) close to the battery module.

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