Battery pack and electric device

Abstract

The utility model provides a kind of battery pack and electric device, it is related to power battery field.Battery pack includes box, electric core, cooling exhaust member, cooling pipeline, exhaust pipeline and explosion-proof valve;Box has accommodating cavity;Electric core is provided with multiple groups, multiple electric cores are located in accommodating cavity, and explosion-proof hole and the first explosion-proof valve that blocks explosion-proof hole are provided on electric core;Cooling exhaust member is provided with multiple, multiple cooling exhaust members and multiple electric cores are alternately arranged, and cooling exhaust member is internally provided with cooling cavity and exhaust cavity, exhaust cavity is adjacent with cooling cavity, and exhaust cavity is communicated with explosion-proof hole after first explosion-proof valve breaks open;Cooling pipeline is communicated with cooling cavity;Exhaust pipeline is communicated with exhaust cavity;Second explosion-proof valve is set in box, and exhaust pipeline is blocked.The above-mentioned battery pack can effectively combine liquid cooling system and exhaust system, achieve the purpose of rapid cooling and rapid exhaust, and then realize water vapor integration heat control, effect is better, and it is beneficial to protect user safety.

Description

Technical Field

[0001] This utility model relates to the field of power batteries, and in particular to a battery pack and an electrical device. Background Technology

[0002] With the rapid development of new energy vehicles, battery safety has become a top concern for users. Currently, common battery packs on the market employ only one method to prevent thermal runaway, resulting in poor effectiveness and hindering user safety. Utility Model Content

[0003] In order to solve the problems existing in the prior art, one of the objectives of this utility model is to provide a battery pack.

[0004] This utility model provides the following technical solution: A battery pack, comprising: The housing has a receiving cavity; The battery cell is provided in multiple sets, and the multiple sets of battery cells are located in the receiving cavity. The battery cell is provided with an explosion-proof hole and a first explosion-proof valve that blocks the explosion-proof hole. The cooling exhaust component is provided in multiple ways, and the multiple cooling exhaust components are arranged alternately with multiple sets of battery cells. The cooling exhaust component is provided with a cooling chamber and an exhaust chamber inside. The exhaust chamber is adjacent to the cooling chamber and is configured to communicate with the explosion-proof hole after the first explosion-proof valve is broken. Cooling pipes, the cooling pipes being connected to the cooling chambers of the plurality of cooling exhaust components; An exhaust pipe, the exhaust pipe being connected to the exhaust chambers of the plurality of cooling exhaust components; and A second explosion-proof valve is installed in the housing and blocks the exhaust pipe.

[0005] As a further optional solution for the battery pack, the housing includes a bottom plate, the bottom plate having an exhaust channel inside, and the exhaust channel having a plurality of first exhaust holes and a plurality of second exhaust holes. The explosion-proof hole is located on the side of the battery cell facing the base plate, and the explosion-proof hole is connected to the first vent hole after the first explosion-proof valve is broken. The exhaust chamber is provided with a third exhaust hole on the side facing the bottom plate, and the third exhaust hole is connected to the second exhaust hole.

[0006] As a further optional embodiment of the battery pack, the battery pack has a first direction, a second direction, and a third direction that are mutually perpendicular to each other. The battery cells are arranged in an array along the first direction and the second direction. A plurality of cooling exhaust components and a plurality of battery cells are arranged alternately along the first direction. The cooling cavity and the exhaust cavity extend along the second direction, and the exhaust cavity is located on the side of the cooling cavity facing the base plate along the third direction. The cooling pipe connects the cooling cavity of the plurality of cooling exhaust components along the first direction, and the exhaust pipe connects the exhaust cavity of the plurality of cooling exhaust components along the first direction.

[0007] As a further optional embodiment of the battery pack, the housing includes a hollow frame and a crossbeam, the crossbeam extending along the second direction, and both ends of the crossbeam being connected to the frame respectively; The second explosion-proof valve is disposed on the frame, and the exhaust pipe is connected to the crossbeam.

[0008] As a further optional feature of the battery pack, a fourth vent is provided on the venting channel, which communicates with the inner cavity of the crossbeam.

[0009] As a further optional embodiment of the battery pack, the battery pack includes at least four second explosion-proof valves, with at least two second explosion-proof valves disposed at one end of the frame along the first direction and at least two second explosion-proof valves disposed at the other end of the frame along the first direction.

[0010] As a further optional solution for the battery pack, a first seal is provided between the battery cell and the base plate, the first seal being arranged around the explosion-proof hole.

[0011] As a further optional feature of the battery pack, a second seal is provided between the cooling vent and the base plate, the second seal being arranged around the third vent.

[0012] As a further alternative to the battery pack, the battery cell has a large surface area that is in contact with the cooling exhaust component.

[0013] Another objective of this invention is to provide an electrical device.

[0014] This utility model provides the following technical solution: An electrical device includes the aforementioned battery pack.

[0015] The embodiments of this utility model have the following beneficial effects: When some or all of the battery cells experience thermal runaway, on one hand, external refrigerant flows into the cooling chamber through the cooling pipes, exchanges heat with the battery cells through the cooling exhaust components, and carries away the heat generated by the cells, thus cooling them. On the other hand, the first explosion-proof valve blocking the explosion-proof hole breaks, connecting the explosion-proof hole to the exhaust chamber. The battery cells can then release pressure through the explosion-proof hole, and the discharged gas flows into the exhaust chamber, then into the exhaust pipe, ultimately causing the second explosion-proof valve to break, releasing gas at the location where the second explosion-proof valve is installed. Simultaneously, the refrigerant flowing in the cooling chamber also cools the gas in the adjacent exhaust chamber, achieving a cooling effect on the high-temperature gas. Therefore, the above-mentioned battery pack effectively combines the liquid cooling system and the exhaust system, achieving rapid cooling and rapid exhaust, thus realizing integrated water-vapor thermal runaway prevention, with better results and better protection for user safety.

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This diagram shows an overall structural schematic of a battery pack according to an embodiment of the present invention. Figure 2 This diagram shows the internal structure of a battery pack according to an embodiment of the present invention. Figure 3 This diagram illustrates the positional relationship between the battery cell and the cooling exhaust component in a battery pack according to an embodiment of the present invention. Figure 4 A partial structural schematic diagram of a battery pack provided in an embodiment of the present invention is shown; Figure 5 This diagram illustrates the internal structure of a cooling exhaust component in a battery pack according to an embodiment of the present invention.

[0019] Explanation of key component symbols: 100-Enclosure; 101-Receiving cavity; 110-Base plate; 111-Exhaust channel; 112-First exhaust port; 113-Second exhaust port; 114-Fourth exhaust port; 120-Frame; 130-Crossbeam; 140-Cover plate; 200-Battery cell; 210-Explosion-proof hole; 220-Large surface; 300-Cooling exhaust component; 310-Cooling cavity; 320-Exhaust cavity; 330-Third exhaust port; 400-Cooling pipe; 500-Exhaust pipe; 600-Second explosion-proof valve; 700-First seal; 800-Second seal; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Example Please refer to the following: Figure 1 , Figure 2 and Figure 3 This embodiment provides a battery pack, including a housing 100, a battery cell 200, a cooling and venting component 300, a cooling pipe 400, an venting pipe 500, and a second explosion-proof valve 600.

[0026] The housing 100 has a receiving cavity 101. Multiple sets of battery cells 200 are provided, each set located within the receiving cavity 101. Each battery cell 200 is provided with an explosion-proof hole 210 (see reference). Figure 5 ) and the first explosion-proof valve (not shown in the figure) that blocks the explosion-proof hole 210.

[0027] Multiple cooling exhaust components 300 are provided, and multiple cooling exhaust components 300 are arranged alternately with multiple sets of battery cells 200. The cooling exhaust component 300 has a cooling chamber 310 and an exhaust chamber 320 inside. The exhaust chamber 320 is adjacent to the cooling chamber 310, and the exhaust chamber 320 is configured to communicate with the explosion-proof hole 210 after the first explosion-proof valve is broken.

[0028] Accordingly, the cooling pipe 400 is connected to the cooling chamber 310 of the multiple cooling exhaust components 300, and the exhaust pipe 500 is connected to the exhaust chamber 320 of the multiple cooling exhaust components 300.

[0029] In addition, a second explosion-proof valve 600 is installed in the housing 100 and blocks the exhaust pipe 500.

[0030] When some or all of the battery cells 200 experience thermal runaway, on the one hand, external refrigerant flows into the cooling chamber 310 through the cooling pipe 400, exchanges heat with the battery cells 200 through the cooling exhaust component 300, and carries away the heat generated by the battery cells 200, thus cooling the battery cells 200. On the other hand, the first explosion-proof valve blocking the explosion-proof hole 210 breaks, allowing the exhaust chamber 320 to connect with the explosion-proof hole 210. The battery cells 200 can then depressurize through the explosion-proof hole 210, and the discharged gas flows into the exhaust chamber 320, and then into the exhaust pipe 500, ultimately causing the second explosion-proof valve 600 to break, releasing gas at the location where the second explosion-proof valve 600 is installed. At the same time, the refrigerant flowing in the cooling chamber 310 can also cool the gas in the adjacent exhaust chamber 320, achieving the effect of cooling the high-temperature gas. Thus, the above-mentioned battery pack can effectively combine the liquid cooling system and the exhaust system to achieve rapid cooling and rapid exhaust, thereby achieving integrated water and vapor thermal runaway prevention, with better effect and better protection for user safety.

[0031] Please refer to the following: Figure 4 and Figure 5 In some embodiments, the housing 100 includes a bottom plate 110, and an exhaust channel 111 is provided inside the bottom plate 110. The exhaust channel 111 is provided with a plurality of first exhaust holes 112 and a plurality of second exhaust holes 113.

[0032] Accordingly, the explosion-proof hole 210 is provided on the side of the battery cell 200 facing the base plate 110, and the explosion-proof hole 210 is connected to the first vent hole 112 after the first explosion-proof valve is broken.

[0033] In addition, the exhaust chamber 320 is provided with a third exhaust hole 330 along the side facing the bottom plate 110, and the third exhaust hole 330 is connected to the second exhaust hole 113.

[0034] When the cell 200 experiences thermal runaway, the first explosion-proof valve breaks open, and the gas discharged from the explosion-proof hole 210 of the cell 200 first flows into the exhaust channel 111 through the first exhaust hole 112, then flows into the third exhaust hole 330 through the second exhaust hole 113, and then flows into the exhaust chamber 320.

[0035] In addition, the explosion-proof hole 210 is located on the side of the battery cell 200 facing the base plate 110, that is, at the bottom of the battery cell 200. By using the explosion-proof hole 210 at the bottom of the battery cell 200, heat can be discharged to the bottom of the housing 100 in the event of thermal runaway of the battery cell 200, reducing the impact on other electronic components in the battery pack.

[0036] Furthermore, a first sealing element 700 is provided between the battery cell 200 and the base plate 110, and the first sealing element 700 is arranged around the explosion-proof hole 210.

[0037] In use, the first seal 700 can enhance the sealing of the connection between the explosion-proof hole 210 and the first exhaust hole 112, ensuring that the gas discharged from the explosion-proof hole 210 flows completely into the exhaust channel 111 through the first exhaust hole 112, and preventing gas from leaking into the receiving cavity 101.

[0038] For example, the first seal 700 is a sealing ring made of rubber or other elastic material. The first seal 700 is embedded in the surface of the base plate 110 facing the battery cell 200, and the explosion-proof hole 210 and the first vent hole 112 are both located in the inner circumference of the first seal 700.

[0039] Furthermore, a second seal 800 is provided between the cooling exhaust component 300 and the base plate 110, and the second seal 800 is arranged around the third exhaust hole 330.

[0040] In use, the second seal 800 can enhance the sealing of the connection between the second vent 113 and the third vent 330, ensuring that the gas in the exhaust channel 111 flows completely into the third vent 330 after being discharged from the second vent 113, and then into the exhaust chamber 320, thus preventing gas from leaking into the receiving chamber 101.

[0041] For example, the second seal 800 is a sealing ring made of rubber or other elastic material. The second seal 800 is embedded in the surface of the base plate 110 facing the battery cell 200, and the second vent 113 and the third vent 330 are both located within the inner circumference of the second seal 800.

[0042] Please refer to it again. Figure 3 and Figure 4 In some embodiments, the battery pack has a first direction X, a second direction Y, and a third direction Z that are mutually perpendicular. The battery cells 200 are arranged in an array along the first direction X and the second direction Y. Multiple cooling exhaust components 300 are arranged alternately with multiple sets of battery cells 200 along the first direction X. Cooling chambers 310 and exhaust chambers 320 extend along the second direction Y, with the exhaust chamber 320 located on the side of the cooling chamber 310 facing the base plate 110 along the third direction Z. Cooling pipes 400 connect to the cooling chambers 310 of the multiple cooling exhaust components 300 along the first direction X, and exhaust pipes 500 connect to the exhaust chambers 320 of the multiple cooling exhaust components 300 along the first direction X.

[0043] Specifically, when the battery cells 200 are arrayed along the first direction X and the second direction Y, multiple battery cells 200 arranged in a row along the second direction Y form a group, and each group of battery cells 200 is arranged at intervals along the first direction X.

[0044] Based on this, multiple cooling exhaust components 300 and multiple sets of battery cells 200 are arranged alternately along the first direction X, so that each set of battery cells 200 can be cooled by the adjacent cooling exhaust component 300; and when the battery cell 200 experiences thermal runaway, the gas discharged by the battery cell 200 through the explosion-proof hole 210 can flow into the exhaust chamber 320 of the adjacent cooling exhaust component 300 nearby, so as to achieve rapid release.

[0045] Understandably, when there are n groups of battery cells 200, the number of cooling exhaust components 300 can be n+1. In this case, each group of battery cells 200 has one cooling exhaust component 300 on each side along the first direction X. Since the cooling chamber 310 and the exhaust chamber 320 are arranged along the third direction Z, the cooling exhaust component 300 located on either side of the battery cell 200 along the first direction X can cool the battery cell 200, ensuring the effect of preventing thermal runaway. Here, n is an integer greater than 1.

[0046] In addition, the cooling pipe 400 is connected sequentially to the cooling chambers 310 of each cooling exhaust component 300 along the first direction X, so that external refrigerant can flow into the cooling chambers 310 of each cooling exhaust component 300 through a cooling pipe 400, or flow into the same cooling pipe 400 from the cooling chambers 310 of each cooling exhaust component 300, thereby simplifying the layout of the cooling pipe 400.

[0047] Understandably, there are two cooling pipes 400. One cooling pipe 400 receives external refrigerant, which is then further distributed into each cooling chamber 310. The refrigerant in each cooling chamber 310 exchanges heat with the battery cell 200 through the cooling exhaust duct 300, then merges into the other cooling pipe 400 and returns through it. Correspondingly, one end of each cooling chamber 310 extending along the second direction Y is connected to one of the cooling pipes 400, and the other end is connected to the other cooling pipe 400.

[0048] Similarly, the exhaust pipe 500 connects to the exhaust chambers 320 of multiple cooling exhaust components 300 along the first direction X, so that the gas discharged from any cell 200 flows into the exhaust chamber 320 of the adjacent cooling exhaust component 300 and then into the exhaust pipe 500, and is then released from the second explosion-proof valve 600.

[0049] In this embodiment, there are two exhaust pipes 500. One end of the exhaust chamber 320, which extends along the second direction Y, is connected to one of the exhaust pipes 500, and the other end is connected to the other exhaust pipe 500. Through the two exhaust pipes 500, the gas in the exhaust chamber 320 can be quickly discharged.

[0050] Meanwhile, the exhaust channel 111 extends along the first direction X, connecting the exhaust chambers 320 of the multiple cooling exhaust components 300 and the explosion-proof holes 210 of the multiple battery cells 200 located above the exhaust channel 111, and the multiple first exhaust holes 112 and multiple second exhaust holes 113 are arranged alternately along the first direction X.

[0051] When the amount of gas discharged from the explosion-proof hole 210 is small, the gas mainly flows into the exhaust chamber 320 of the adjacent cooling exhaust component 300 through the exhaust channel 111 on the base plate 110. When the amount of gas discharged from the explosion-proof hole 210 is large, the gas can also flow into the exhaust chamber 320 of the cooling exhaust component 300, which is farther away, through the exhaust channel 111 on the base plate 110.

[0052] In this embodiment, the number of exhaust channels 111 is the same as the number of battery cells 200 in each group of battery cells 200. Each exhaust channel 111 is arranged at intervals along the second direction Y, corresponding one-to-one with the multiple battery cells 200 arranged in a row along the second direction Y. In other words, each of the multiple battery cells 200 in the same group corresponds to one exhaust channel 111.

[0053] For example, the first direction X and the second direction Y are horizontal, with the first direction X being the length direction of the battery pack and the second direction Y being the width direction of the battery pack. The third direction Z is vertical and is the thickness direction of the battery pack.

[0054] Furthermore, the battery cell 200 has a large surface 220 perpendicular to the first direction X, and the large surface 220 is in contact with the cooling exhaust component 300.

[0055] Understandably, the battery cell 200 is rectangular, with its large surface 220 containing both length and width. By aligning the large surface 220 of the battery cell 200 perpendicular to the first direction X and in contact with the cooling exhaust component 300, the heat conduction between the surface of the battery cell 200 and the cooling exhaust component 300 can be maximized, resulting in better cooling performance.

[0056] Therefore, the above-mentioned battery pack adopts the CTP (Cell to Pack) assembly method and is assembled with 200 square cells arranged horizontally.

[0057] Please refer to the following: Figure 3 , Figure 4 and Figure 5 In some embodiments, in addition to the base plate 110, the housing 100 also includes a hollow frame 120 and a crossbeam 130.

[0058] The crossbeam 130 extends along the second direction Y, and both ends of the crossbeam 130 are connected to the frame 120.

[0059] In addition, the second explosion-proof valve 600 is located on the frame 120, and the exhaust pipe 500 is connected to the crossbeam 130.

[0060] In use, the cavity of the exhaust pipe 500, the inner cavity of the crossbeam 130, and the inner cavity of the frame 120 are connected in sequence. The gas collected from the exhaust chambers 320 of each cooling exhaust component 300 into the exhaust pipe 500 first flows into the inner cavity of the crossbeam 130, then into the inner cavity of the frame 120, and finally causes the second explosion-proof valve 600 to break open, releasing gas from the installation position of the second explosion-proof valve 600.

[0061] The second explosion-proof valve 600 is installed on the frame 120, which facilitates the release of gas to the outside of the housing 100 and also facilitates the fixing and installation of the second explosion-proof valve 600.

[0062] Furthermore, the battery pack includes at least four second explosion-proof valves 600. At least two second explosion-proof valves 600 are disposed at one end of the frame 120 along the first direction X, and at least two second explosion-proof valves 600 are disposed at the other end of the frame 120 along the first direction X.

[0063] When the battery cell 200 experiences thermal runaway, the gas discharged through the explosion-proof hole 210 flows into the inner cavity of the frame 120 and can be simultaneously discharged from the installation positions of multiple second explosion-proof valves 600 around the enclosure 100. The gas release process is faster, the exhaust efficiency is higher, and it can achieve rapid cooling, prevent heat spread, and has a better effect in preventing thermal runaway.

[0064] In some embodiments, the exhaust passage 111 is further provided with a fourth exhaust hole 114, and the fourth exhaust hole 114 is connected to the inner cavity of the crossbeam 130.

[0065] At this time, the gas discharged from the explosion-proof hole 210 flows into the exhaust channel 111 through the first exhaust hole 112. A portion of the gas flows into the exhaust chamber 320 through the second exhaust hole 113 and the third exhaust hole 330 in sequence, while another portion of the gas flows directly into the inner cavity of the crossbeam 130 through the fourth exhaust hole 114, and then into the inner cavity of the frame 120, and is discharged from the installation position of the second explosion-proof valve 600.

[0066] In some embodiments, the housing 100 further includes a cover plate 140. The cover plate 140 is disposed parallel to the bottom plate 110, and the frame 120 is located between the cover plate 140 and the bottom plate 110, and the cover plate 140, the bottom plate 110 and the frame 120 enclose a receiving cavity 101.

[0067] During assembly, the base plate 110, frame 120 and crossbeam 130 are first assembled together, and the battery cell 200, cooling exhaust component 300, cooling pipe 400 and exhaust pipe 500 are placed into the receiving cavity 101. Then the cover plate 140 is installed to encapsulate the battery cell 200, cooling exhaust component 300, cooling pipe 400 and exhaust pipe 500 inside.

[0068] During long-term use of the aforementioned battery pack, when some or all of the cells 200 experience thermal runaway, on the one hand, external refrigerant flows into the cooling chamber 310 through the cooling pipe 400, exchanges heat with the cells 200 through the cooling exhaust component 300, and carries away the heat generated by the cells 200, thus cooling the cells 200. On the other hand, the first explosion-proof valve blocking the explosion-proof hole 210 breaks open, connecting the explosion-proof hole 210 with the exhaust chamber 320, allowing the cells 200 to depressurize through the explosion-proof hole 210. The discharged gas first flows into the exhaust channel 111 inside the base plate 110 through the first exhaust hole 112. A portion of the gas in the exhaust channel 111 flows into the exhaust chamber 320 through the second exhaust hole 113 and the third exhaust hole 330, then into the exhaust pipe 500, and from the exhaust pipe 500 into the inner cavity of the crossbeam 130. Another portion of the gas flows directly into the inner cavity of the crossbeam 130 through the fourth exhaust hole 114. The gas entering the inner cavity of the crossbeam 130 continues to flow into the inner cavity of the frame 120, eventually causing the second explosion-proof valve 600 to rupture and release at the location where the second explosion-proof valve 600 is installed. Simultaneously, the refrigerant flowing in the cooling chamber 310 also cools the gas in the adjacent exhaust chamber 320, achieving a cooling effect for the high-temperature gas. Therefore, the aforementioned battery pack effectively combines the liquid cooling system and the exhaust system, achieving rapid cooling and rapid exhaust, thereby realizing integrated water-vapor thermal runaway prevention with better performance and improved user safety.

[0069] This embodiment also provides an electrical device, including the battery pack described above.

[0070] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0071] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0072] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A battery pack, characterized in that, include: The housing (100) has a receiving cavity (101); The battery cell (200) is provided in multiple sets, and the multiple sets of the battery cell (200) are located in the receiving cavity (101). The battery cell (200) is provided with an explosion-proof hole (210) and a first explosion-proof valve that blocks the explosion-proof hole (210). A cooling exhaust component (300) is provided in multiple ways, and multiple cooling exhaust components (300) are arranged alternately with multiple sets of battery cells (200). The cooling exhaust component (300) is provided with a cooling chamber (310) and an exhaust chamber (320) inside. The exhaust chamber (320) is adjacent to the cooling chamber (310). The exhaust chamber (320) is configured to communicate with the explosion-proof hole (210) after the first explosion-proof valve is broken. Cooling pipe (400) is connected to the cooling chamber (310) of the plurality of cooling exhaust components (300); An exhaust pipe (500) is connected to the exhaust chambers (320) of the plurality of cooling exhaust components (300); and The second explosion-proof valve (600) is installed in the housing (100) and blocks the exhaust pipe (500).

2. The battery pack according to claim 1, characterized in that, The housing (100) includes a bottom plate (110), and an exhaust channel (111) is provided inside the bottom plate (110). The exhaust channel (111) is provided with a plurality of first exhaust holes (112) and a plurality of second exhaust holes (113). The explosion-proof hole (210) is located on the side of the battery cell (200) facing the base plate (110), and the explosion-proof hole (210) is connected to the first exhaust hole (112) after the first explosion-proof valve is broken. The exhaust chamber (320) is provided with a third exhaust hole (330) on the side facing the bottom plate (110), and the third exhaust hole (330) is connected to the second exhaust hole (113).

3. The battery pack according to claim 2, characterized in that, The battery pack has a first direction (X), a second direction (Y), and a third direction (Z) that are perpendicular to each other. The battery cells (200) are arranged in an array along the first direction (X) and the second direction (Y). A plurality of cooling exhaust components (300) and a plurality of battery cells (200) are arranged alternately along the first direction (X). The cooling cavity (310) and the exhaust cavity (320) extend along the second direction (Y), and the exhaust cavity (320) is located on the side of the cooling cavity (310) facing the base plate (110) along the third direction (Z). The cooling pipe (400) connects the cooling cavity (310) of the plurality of cooling exhaust components (300) along the first direction (X), and the exhaust pipe (500) connects the exhaust cavity (320) of the plurality of cooling exhaust components (300) along the first direction (X).

4. The battery pack according to claim 3, characterized in that, The box body (100) includes a hollow frame (120) and a crossbeam (130), the crossbeam (130) extends along the second direction (Y), and the two ends of the crossbeam (130) are respectively connected to the frame (120); The second explosion-proof valve (600) is disposed on the frame (120), and the exhaust pipe (500) is connected to the crossbeam (130).

5. The battery pack according to claim 4, characterized in that, The exhaust channel (111) is also provided with a fourth exhaust hole (114), which is connected to the inner cavity of the crossbeam (130).

6. The battery pack according to claim 4, characterized in that, The battery pack includes at least four second explosion-proof valves (600), at least two of the second explosion-proof valves (600) are disposed at one end of the frame (120) along the first direction (X), and at least two of the second explosion-proof valves (600) are disposed at the other end of the frame (120) along the first direction (X).

7. The battery pack according to claim 2, characterized in that, A first sealing element (700) is provided between the battery cell (200) and the base plate (110), and the first sealing element (700) is arranged around the explosion-proof hole (210).

8. The battery pack according to claim 2, characterized in that, A second sealing element (800) is provided between the cooling exhaust component (300) and the base plate (110), and the second sealing element (800) is arranged around the third exhaust hole (330).

9. The battery pack according to any one of claims 1-8, characterized in that, The battery cell (200) has a large surface (220) that is in contact with the cooling exhaust component (300).

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

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