Battery pack and electric equipment

Abstract

The utility model provides a battery pack and electric equipment, the battery pack comprises a liquid cooling plate and a fuse assembly, the liquid cooling plate and the fuse assembly, the fuse assembly comprises a fuse and a heat conduction part, one end of the heat conduction part is connected to the fuse, the other end of the heat conduction part is connected to the liquid cooling plate, the heat conduction part is used for transmitting heat of the fuse to the liquid cooling plate, and the heat conduction part is used for transmitting heat of the fuse to the liquid cooling plate. The heat dissipation effect of the fuse can be effectively improved, so that the temperature of the fuse is reduced, and the safety of the battery pack is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery pack and an electrical device. Background Technology

[0002] In related technologies, battery fuses are safety devices that protect batteries from damage caused by overcurrent or short circuits. Especially in high-energy-density batteries, fuses play a crucial role in the battery management system. However, overheating of a fuse can lead to its failure and may even cause dangers such as fires or battery explosions. Utility Model Content

[0003] Embodiments of this application provide a battery pack and electrical equipment that can improve the technical problem of excessively high fuse temperatures.

[0004] In a first aspect, embodiments of this application provide a battery pack, the battery pack comprising:

[0005] The enclosure has a receiving chamber;

[0006] A liquid cooling plate is disposed within the receiving cavity;

[0007] A fuse assembly is disposed in the receiving cavity. The fuse assembly includes a fuse and a heat-conducting part. One end of the heat-conducting part is connected to the fuse, and the other end is connected to the liquid cooling plate. The heat-conducting part is used to transfer the heat of the fuse to the liquid cooling plate.

[0008] The fuse assembly includes a protective shell with a receiving groove adapted to the fuse. The fuse is located in the receiving groove and fixedly connected to the protective shell. One end of the heat-conducting part is connected to the protective shell, and the other end is connected to the liquid cooling plate.

[0009] In some embodiments, the heat-conducting part includes a mounting component and a thermally conductive adhesive. The mounting component has a thermally conductive space communicating with the receiving groove and the liquid cooling plate. The thermally conductive adhesive is filled in the thermally conductive space and connects the fuse and the liquid cooling plate.

[0010] In some embodiments, the protective shell includes a sidewall near the liquid cooling plate, the sidewall and the liquid cooling plate being arranged in the same direction, the sidewall having a heat conduction port that connects the receiving groove and the heat conduction space.

[0011] In some embodiments, the fuse includes a body and a fixing portion protruding from both sides of the body, each of the fixing portions being fixedly connected to the protective shell.

[0012] In some embodiments, the housing includes two first cover plates and a plurality of second cover plates, the two first cover plates being disposed opposite to each other, and the plurality of second cover plates surrounding the opposite two first cover plates, the two first cover plates and the plurality of second cover plates forming a receiving chamber;

[0013] The battery pack further includes a cell module, which is disposed in the receiving cavity. The liquid cooling plate is disposed between any of the first cover plates and the cell module. The cell module includes a module end plate facing one of the cover plates. The protective shell is fixed to the module end plate. The protective shell has the receiving groove, and the opening of the receiving groove is located on the side of the protective shell away from the module end plate.

[0014] In some embodiments, the battery pack further includes a connector assembly, a first connecting bar, and a second connecting bar. One end of the first connecting bar is connected to the cell module, and the other end of the first connecting bar is connected to one fixing part. One end of the second connecting bar is connected to another fixing part, and the other end of the second connecting bar is connected to the connector assembly. The first connecting bar and the second connecting bar extend in the same direction as the liquid cooling plate.

[0015] In some embodiments, the battery pack further includes a BMU and a service panel, the BMU being connected to the cell module and spaced apart from the fuse, the housing having an opening that exposes the BMU and the fuse, and the service panel covering the opening.

[0016] In some embodiments, the battery pack further includes a bracket mounted on the module end plate, and the protective shell is fixed to the bracket.

[0017] In some embodiments, the liquid cooling plate has a first fixing seat protruding from it, and the end of the module end plate away from the liquid cooling plate has a second fixing seat protruding from it.

[0018] The bracket includes a first connecting part and a second connecting part. The first connecting part extends toward the liquid cooling plate and is connected to the first fixed base. The second connecting part extends away from the liquid cooling plate and is connected to the second fixed base.

[0019] This application also provides an electrical device, which includes the battery pack as described above.

[0020] The beneficial effects of the embodiments of this application are as follows:

[0021] In the embodiments of this application, the battery pack provided by this application includes a liquid cooling plate and a fuse assembly. The fuse assembly includes a fuse and a heat-conducting part. One end of the heat-conducting part is connected to the fuse, and the other end is connected to the liquid cooling plate. The heat-conducting part is used to transfer the heat of the fuse to the liquid cooling plate, which can effectively improve the heat dissipation effect of the fuse, reduce the temperature of the fuse, and improve the safety of the battery pack. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the battery pack structure provided in the embodiments of this application. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the battery pack structure provided in the embodiments of this application. Figure 2 ;

[0025] Figure 3 yes Figure 2 An enlarged schematic diagram of part A shown;

[0026] Figure 4 This is a schematic diagram of the battery pack structure provided in the embodiments of this application. Figure 3 ;

[0027] Figure 5 yes Figure 4 An enlarged schematic diagram of part B shown;

[0028] Figure 6 This is a front view of the battery pack provided in the embodiments of this application. Figure 1 ;

[0029] Figure 7 This is a front view of the battery pack provided in the embodiments of this application. Figure 2 .

[0030] Figure label:

[0031] 1000, battery pack;

[0032] 100. Housing; 101. First cover plate; 102. Second cover plate; 103. Opening; 104. Cell module; 1041. Module end plate;

[0033] 10. Liquid cooling plate;

[0034] 20. Fuse assembly; 21. Protective housing; 210. Receiving groove; 211. Side wall; 2110. Heat conduction port; 22. Fuse; 221. Body; 222. Fixing part; 2221. Insulating post; 23. Heat conduction part; 231. Mounting part;

[0035] 50. Connector assembly; 51. MSD; 52. High-voltage negative connector; 53. High-voltage positive connector;

[0036] 61. First connecting row; 62. Second connecting row; 63. Third connecting row;

[0037] 70. BMU;

[0038] 80. Maintenance panel;

[0039] 90. Bracket; 91. First connecting part; 92. Second connecting part. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of this application and are not intended to limit this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0041] Please refer to Figures 1-3 , Figure 1 This is a schematic diagram of the battery pack structure provided in the embodiments of this application. Figure 1 , Figure 2 This is a schematic diagram of the battery pack structure provided in the embodiments of this application. Figure 2 ,for Figure 1 A schematic diagram showing the battery pack with some structures removed. Figure 3 yes Figure 2The diagram shows an enlarged view of part A. The battery pack 1000 provided in this application includes a housing 100 and a liquid cooling plate 10. The housing 100 has a receiving chamber. The liquid cooling plate 10 is disposed within the receiving chamber. The battery pack 1000 also includes a fuse assembly 20, which is disposed within the receiving chamber. The fuse assembly 20 includes a fuse 22, which is a safety device protecting the battery from overcurrent or short-circuit damage. Especially in high-energy-density batteries, the fuse 22 plays a crucial role in the battery management system. The fuse 22 is mainly used to prevent damage to electrical equipment caused by excessive current in the circuit. It protects electrical equipment and wiring by quickly disconnecting the circuit when the current is too high. However, when the fuse 22 overheats, it may damage the fuse 22, and may even cause dangers such as fire or battery explosion.

[0042] The fuse assembly 20 includes a heat-conducting part 23, one end of which is connected to the fuse 22 and the other end to the liquid cooling plate 10. The heat-conducting part 23 is used to transfer heat from the fuse 22 to the liquid cooling plate 10. By dissipating heat through the liquid cooling plate 10, the temperature of the fuse 22 is reduced, which can effectively improve the heat dissipation effect of the fuse 22 and improve the safety of the battery pack 1000.

[0043] In some embodiments, the fuse assembly 20 includes a protective housing 21. The protective housing 21 has a receiving groove 210 adapted to the fuse 22. The fuse 22 is located within the receiving groove 210 and is fixedly connected to the protective housing 21. One end of the heat-conducting part 23 is connected to the protective housing 21, and the other end is connected to the liquid cooling plate 10. The protective housing 21 is used to support and protect the fuse 22, preventing damage to the internal components under external impact or collision.

[0044] In some embodiments, the heat-conducting part 23 includes a mounting member 231 and thermally conductive adhesive. The mounting member 231 has a thermally conductive space communicating with the receiving groove 210 and the liquid cooling plate 10. The thermally conductive space extends through the mounting member 231. The thermally conductive adhesive is filled in the thermally conductive space and connects the fuse 22 and the liquid cooling plate 10. The thermally conductive adhesive can quickly dissipate the heat generated by the fuse 22, thereby improving product performance.

[0045] Understandably, fuse 22 generates a large amount of heat during overcurrent or short-circuit events. Thermally conductive adhesive, with its thermal conductivity, electrical insulation, and high-temperature resistance, effectively dissipates the heat generated inside fuse 22. Through contact with the liquid cooling plate 10, it helps to quickly disperse the heat, reducing the temperature of fuse 22. This efficient heat dissipation helps prevent overheating of fuse 22, which could lead to performance degradation or malfunction, thus extending its service life.

[0046] Please refer to Figures 4-5, Figure 4 This is a schematic diagram of the battery pack structure provided in the embodiments of this application. Figure 3 , Figure 5 yes Figure 4 The enlarged schematic diagram of part B is shown. In some embodiments, the protective shell 21 includes a side wall 211 near the liquid cooling plate 10, the side wall 211 and the first liquid cooling plate 10 are arranged in the same direction, the side wall 211 is provided with a heat conduction port 2110, and the heat conduction port 2110 connects the receiving groove 210 and the heat conduction space.

[0047] In some examples, both the sidewall 211 and the liquid cooling plate 10 are horizontally arranged, and the mounting part is vertically arranged and connected between the sidewall 211 and the liquid cooling plate 10. The fuse 22 is installed in the receiving groove 210 and attached to the sidewall 211. The fuse 22 contacts the thermally conductive adhesive through the heat conduction port 2110 to increase the heat conduction effect.

[0048] In some embodiments, the fuse 22 includes a body 221 and fixing portions 222 protruding from both sides of the body 221, each fixing portion 222 being fixedly connected to the protective shell 21. The fixing portion 222 can be connected to the protective shell 21 by a screwed structure, such as a stud or bolt.

[0049] In some examples, the protective shell 21 includes a receiving portion and a protrusion, the protrusion being connected to both sides of the receiving portion, the receiving portion having the receiving groove 210, the protrusion having a fixing groove, and the fixing portion 222 being located in the fixing groove and correspondingly fixed to the protrusion.

[0050] In some embodiments, the housing 100 includes two first cover plates 101 and a plurality of second cover plates 102, the two first cover plates 101 being disposed opposite to each other, and the plurality of second cover plates 102 being disposed between the two opposite first cover plates 101, the two first cover plates 101 and the plurality of second cover plates 102 forming a receiving chamber.

[0051] The battery pack 1000 also includes a cell module 104, which is disposed in the receiving cavity. The liquid cooling plate 10 is disposed between any of the first cover plates 101 and the cell module 104. The cell module 104 includes a module end plate 1041 disposed toward one of the cover plates. The module end plate 1041 provides structural support for the cell, which can prevent the cell from undergoing large displacement during operation or transportation, and ensure the stability and safety of the cell.

[0052] The protective shell 21 is fixed to the module end plate 1041. The protective shell 21 has the receiving groove 210, and the opening of the receiving groove 210 is located on the side of the protective shell 21 away from the module end plate 1041. Specifically, the protective shell 21 is a wall-mounted structure installed on the module end plate 1041. Since the fuse 22 is large in size and weight, the wall-mounted structure can prevent interference with the cover plate, liquid cooling plate 10 and other structures of the battery pack 1000, and raise the fuse 22 as a whole.

[0053] In some instances, the liquid cooling plate 10 is disposed between the first cover plate 101 at the bottom of the cell module 104 and the cell module 104, or the first cover plate 101 at the bottom of the cell module 104 and the liquid cooling plate 10 are integrated into a liquid cooling base plate, and one end of the heat-conducting part 23 is connected to the protective shell 21, and the other end is connected to the liquid cooling base plate.

[0054] In some instances, the liquid cooling plate 10 is disposed between the first cover plate 101 on top of the battery cell module 104 and the battery cell module 104, or the first cover plate 101 on top of the battery cell module 104 and the liquid cooling plate 10 are integrated into a liquid cooling top plate, and one end of the heat-conducting part 23 is connected to the protective shell 21, and the other end is connected to the liquid cooling top plate.

[0055] Please refer to Figures 6-7 , Figure 6 This is a front view of the battery pack provided in the embodiments of this application. Figure 1 , Figure 7 This is a front view of the battery pack provided in the embodiments of this application. Figure 2 In some embodiments, the battery pack 1000 further includes a connector assembly, a first connector bar 61 and a second connector bar 62, one end of the first connector bar 61 being connected to the cell module 104 and the other end of the first connector bar 61 being connected to the fuse 22, one end of the second connector bar 62 being connected to the fuse 22 and the other end of the second connector bar 62 being connected to the connector assembly, and the first connector bar 61 and the second connector bar 62 extending in the same direction as the liquid cooling plate 10.

[0056] In some examples, one end of the first connection bar 61 is connected to the cell module 104, the other end of the first connection bar 61 is connected to a fixing part 222, one end of the second connection bar 62 is connected to another fixing part 222, and the other end of the second connection bar 62 is connected to the connector assembly.

[0057] In some examples, the connector assembly includes an MSD (Maintenance Switch Disconnector), a high-voltage negative connector, and a high-voltage positive connector, with the high-voltage positive connector and the high-voltage negative connector spaced apart vertically and the MSD and the high-voltage negative connector spaced apart horizontally. The battery pack 1000 also includes a third connection bar 63, one end of which is connected to the MSD and the other end to the high-voltage negative connector. The first connection bar 61, the second connection bar 62, and the third connection bar 63 extend in the same direction as the liquid cooling plate 10.

[0058] The first connecting row 61, the second connecting row 62, and the third connecting row 63 extend in the same direction, which can simplify the structure of the corresponding connecting row, reduce the number of processing steps, and make the structure simple and easy to install.

[0059] In some examples, the first connecting row 61, the second connecting row 62, and the third connecting row 63 are located at the same horizontal level and at the same distance from the liquid cooling plate 10. This can make more efficient use of space, avoid wasting too much space due to height differences between components, and also simplify installation and maintenance.

[0060] In some embodiments, the battery pack 1000 further includes a BMU 70 and a maintenance panel 80. The BMU (Battery Management Unit) is a core component of the battery system, primarily used to monitor and manage the battery pack's status, ensuring battery safety, performance, and lifespan. The BMU 70 is connected to the cell module 104 and spaced apart from the fuse 22. The housing 100 has an opening 103 that exposes the BMU 70 and the fuse 22. The maintenance panel 80 covers the opening 103. Specifically, when the BMU 70 and fuse 22 require maintenance or replacement, the maintenance panel 80 can be removed to open the window, exposing the BMU 70 and fuse 22 for maintenance or replacement, ensuring the overall safety of the battery pack 1000. This addresses the technical problem of the inability to regularly replace and maintain the BMU 70 and fuse 22, which poses a significant safety hazard to the battery pack 1000. In addition, the maintenance panel 80 allows for the maintenance of both BMU70 and fuse 22, and also simplifies the maintenance process and improves maintenance efficiency.

[0061] In some embodiments, the battery pack 1000 further includes a bracket 90, which is mounted on the module end plate 1041, and the protective shell 21 is fixed to the bracket 90.

[0062] In some cases, the protective housing 21 can be screwed to the bracket 90, such as by means of studs, bolts, or screws, to make the larger and heavier fuse 22 more securely fixed.

[0063] One end of the insulating post 2221 is fixedly connected to the bracket 90, and the other end is fixedly connected to the fuse 22 and the connecting bar. The insulating post 2221 of the battery fuse 22 is usually made of resin, ceramic, plastic or other highly insulating materials. When the fuse 22 blows, it may generate an electric arc or high temperature. The insulating post 2221 can prevent damage to other structures of the battery pack 1000 when the fuse 22 disconnects.

[0064] In some embodiments, the liquid cooling plate 10 has a first fixing seat protruding from it, and the module end plate 1041 has a second fixing seat protruding from it at the end away from the liquid cooling plate 10.

[0065] The bracket 90 includes a first connecting part 91 and a second connecting part 92. The first connecting part 91 extends toward the liquid cooling plate 10 and is connected to the first fixed seat. The first connecting part 91 can be screwed to the first fixed seat, such as by means of studs, bolts, or screws, or it can be connected to the first fixed seat by means of welding, riveting, snap-fitting, etc. This application does not limit the scope of the application.

[0066] The second connecting portion 92 extends away from the liquid cooling plate 10 and is connected to the second fixing base. The second connecting portion 92 can be screwed to the second fixing base, such as by means of studs, bolts, or screws, or it can be connected to the second fixing base by means of welding, riveting, snap-fitting, etc. This application does not limit the scope of the application.

[0067] This application also provides an electrical device, which includes a battery pack 1000 as described above, the battery pack 1000 being used to provide electrical energy to the electrical device. The electrical device can be an electric vehicle, power tool, electric bicycle, energy storage system, drone, mobile device, etc. By incorporating the battery pack 1000, the safety of the electrical device can be ensured and its service life can be improved.

[0068] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery pack, characterized in that, include: The enclosure has a receiving chamber; A liquid cooling plate is disposed within the receiving cavity; A fuse assembly is disposed in the receiving cavity. The fuse assembly includes a fuse and a heat-conducting part. One end of the heat-conducting part is connected to the fuse, and the other end is connected to the liquid cooling plate. The heat-conducting part is used to transfer the heat of the fuse to the liquid cooling plate. The fuse assembly also includes a protective shell, which has a receiving groove adapted to the fuse. The fuse is located in the receiving groove and is fixedly connected to the protective shell. One end of the heat-conducting part is connected to the protective shell, and the other end is connected to the liquid cooling plate.

2. The battery pack according to claim 1, characterized in that, The heat-conducting part includes a mounting component and a heat-conducting adhesive. The mounting component has a heat-conducting space that connects the receiving groove and the liquid cooling plate. The heat-conducting adhesive is filled in the heat-conducting space and connects the fuse and the liquid cooling plate.

3. The battery pack according to claim 2, characterized in that, The protective shell includes a sidewall near the liquid cooling plate, the sidewall and the liquid cooling plate are arranged in the same direction, and the sidewall has a heat conduction port that connects the receiving groove and the heat conduction space.

4. The battery pack according to claim 1, characterized in that, The fuse includes a body and a fixing part protruding on both sides of the body, and each fixing part is fixedly connected to the protective shell.

5. The battery pack according to any one of claims 1-4, characterized in that, The enclosure includes two first cover plates and a plurality of second cover plates. The two first cover plates are arranged opposite to each other, and the plurality of second cover plates surround the two opposite first cover plates. The two first cover plates and the plurality of second cover plates form a receiving chamber. The battery pack further includes a cell module, which is disposed in the receiving cavity. The liquid cooling plate is disposed between any of the first cover plates and the cell module. The cell module includes a module end plate facing one of the cover plates. The protective shell is fixed to the module end plate. The protective shell has the receiving groove, and the opening of the receiving groove is located on the side of the protective shell away from the module end plate.

6. The battery pack according to claim 5, characterized in that, The battery pack further includes a connector assembly, a first connecting bar, and a second connecting bar. One end of the first connecting bar is connected to the cell module, and the other end of the first connecting bar is connected to the fuse. One end of the second connecting bar is connected to another fuse, and the other end of the second connecting bar is connected to the connector assembly. The first connecting bar and the second connecting bar extend in the same direction as the liquid cooling plate.

7. The battery pack according to claim 6, characterized in that, The battery pack also includes a BMU and a service panel. The BMU is connected to the cell module and is spaced apart from the fuse. The housing has an opening that exposes the BMU and the fuse. The service panel covers the opening.

8. The battery pack according to claim 5, characterized in that, The battery pack also includes a bracket, which is mounted on the module end plate, and the protective shell is fixed to the bracket.

9. The battery pack according to claim 8, characterized in that, The liquid cooling plate has a first fixing seat protruding from it, and the end of the module end plate away from the liquid cooling plate has a second fixing seat protruding from it. The bracket includes a first connecting part and a second connecting part. The first connecting part extends toward the liquid cooling plate and is connected to the first fixing base. The second connecting part extends away from the liquid cooling plate and is connected to the second fixing base.

10. An electrical appliance, characterized in that, The electrical equipment includes a battery pack as described in any one of claims 1-9.

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