Battery pack and electric device

Abstract

The utility model discloses a battery pack and an electric device, and relates to the field of batteries. The battery pack comprises a box body, a plurality of liquid cooling supporting pieces and a plurality of single batteries, the box body comprises a body, first side walls and a supporting part, at least one end of the body in the second direction is provided with the first side walls and the supporting part, the first side walls and the supporting part are arranged at intervals in the second direction to form a second containing space, and the supporting part is provided with an avoiding groove; the plurality of liquid cooling supporting pieces are arranged in the box body at intervals in the first direction, every two adjacent liquid cooling supporting pieces form a first containing space, and at least one end, in the second direction, of each liquid cooling supporting piece is arranged in the corresponding receding groove in a penetrating mode and arranged in the corresponding second containing space; the plurality of single batteries are arranged in the first accommodating space along the second direction; according to the battery pack provided by the invention, the fixing capability of the liquid cooling system is enhanced, and the stability, the reliability and the safety are improved.

Description

Technical Field

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

[0002] With the continued rapid growth of new energy vehicles, the power battery, as a core component of these vehicles, directly impacts the overall safety and reliability of the vehicle and the safety of its users. However, existing new energy vehicles generally suffer from poor installation stability and reliability of individual cells within their power battery packs, affecting driving safety. Utility Model Content

[0003] In order to achieve the above objectives, this application aims to provide a battery pack that solves the technical problem that the multiple individual cells inside the power battery pack in the prior art generally have poor installation stability and reliability, which affects the driving safety of the vehicle.

[0004] The technical solution adopted is as follows:

[0005] In a first aspect, embodiments of this application provide a battery pack having a first direction, a second direction, and a third direction that are perpendicular to each other, characterized in that the battery pack comprises:

[0006] The box includes a body, a first sidewall, and a support portion. The body is provided with the first sidewall and the support portion at at least one end along the second direction. The first sidewall and the support portion are spaced apart along the second direction to form a second accommodating space. The support portion is provided with an avoidance groove.

[0007] Multiple liquid-cooled support members are provided, each extending along the second direction and spaced apart within the housing along the first direction. Two adjacent liquid-cooled support members form a first accommodating space. At least one end of each liquid-cooled support member along the second direction passes through the clearance groove and is disposed within the second accommodating space.

[0008] Multiple individual battery cells are arranged along the second direction within the first accommodating space.

[0009] In one embodiment of the first aspect, the liquid-cooled support includes a first support plate, a liquid-cooled plate, and a second support plate. The first support plate and the second support plate are respectively connected to both ends of the liquid-cooled plate along the third direction. The first support plate is disposed on the bottom plate of the housing. At least one end of the liquid-cooled plate along the second direction passes through the clearance groove and is disposed in the second accommodating space.

[0010] In one embodiment of the first aspect, the battery pack further includes a liquid cooling pipe located within the second accommodating space, and a current collector is provided at one end of the liquid cooling plate near the support portion, with the liquid cooling pipe communicating with the current collector;

[0011] The liquid cooling plate has a liquid cooling channel and an opening communicating with the liquid cooling channel. The flow collector is covered on the opening and has a flow collection cavity communicating with the opening. Both ends of the flow collector along the first direction are provided with connecting pipes communicating with the flow collection cavity and the liquid cooling pipe, respectively.

[0012] In one embodiment of the first aspect, the housing further includes a first connecting wall located within the second accommodating space and connected to the support portion and the first side wall respectively. The first connecting wall has a limiting groove adapted to the shape of the current collector, and the limiting groove communicates with the clearance groove.

[0013] In one embodiment of the first aspect, the end of the second support plate near the support portion is disposed on the side of the support portion away from the first support plate along the third direction.

[0014] In one embodiment of the first aspect, the battery pack further includes fasteners, a first connecting hole is provided at one end of the second support plate near the support portion, the support portion is provided with a second connecting hole corresponding to the first connecting hole, and the fasteners are sequentially inserted through the first connecting hole and the second connecting hole to securely connect the second support plate to the support portion.

[0015] In one embodiment of the first aspect, an insulating adhesive layer is provided between the first support plate and the bottom plate of the housing.

[0016] In one embodiment of the first aspect, the single battery cell has a first explosion-proof valve at one end near the first support plate along the third direction, and two adjacent first support plates, the bottom plate of the housing, and the end of the single battery cell near the first support plate form a first exhaust channel. The first exhaust channel extends along the second direction, and the portion of the first explosion-proof valve facing the bottom plate of the housing and exposed relative to the single battery cell is located within the first exhaust channel.

[0017] In one embodiment of the first aspect, the enclosure further includes a second explosion-proof valve, a second connecting wall, and a second side wall. The second connecting wall is located within the second accommodating space and is connected to the support portion and the first side wall, respectively. The second connecting wall is spaced along the third direction on the side of the first connecting wall away from the liquid cooling pipe to form a second exhaust channel. The second connecting wall has a first exhaust hole. The second side wall is located at one end of the first side wall along the first direction and has a second exhaust hole. The second exhaust channel communicates with both the first exhaust hole and the second exhaust hole. The first exhaust channel communicates with the second exhaust channel through the first exhaust hole. The second explosion-proof valve covers the second exhaust hole.

[0018] In one embodiment of the first aspect, the battery pack further includes a seal that is fitted onto the connecting pipe and contacts the inner wall of the liquid cooling pipe.

[0019] Secondly, embodiments of this application also provide an electrical device, including the battery pack described in any of the above embodiments.

[0020] The beneficial effects of this application are as follows: This application proposes a battery pack by setting the number of liquid-cooled support members to multiple, with each liquid-cooled support member extending along a second direction and spaced apart along a first direction within the housing. This allows any two adjacent liquid-cooled support members to form a first accommodating space, and multiple individual batteries are arranged along the second direction within this first accommodating space. This achieves the accommodation and stable installation of multiple individual batteries, ensuring their secure placement within the housing and guaranteeing the stability and reliability of the battery pack. Furthermore, by extending the multiple liquid-cooled support members along the second direction and spaced apart along the first direction within the housing, they can act as supporting beams, effectively improving the overall torsional stiffness and structural strength of the battery pack, thereby ensuring its stability, reliability, and safety.

[0021] The main body of the housing has a first sidewall and a support portion at at least one end along the second direction. By spaced apart from the first sidewall along the second direction, a second receiving space is formed to accommodate the liquid cooling pipe. A clearance groove is provided on the support portion, and at least one end of the liquid cooling support member along the second direction passes through the clearance groove and is placed within the second receiving space. This facilitates simultaneous communication between the liquid cooling pipe and multiple liquid cooling supports within the second receiving space, allowing coolant to flow sequentially through them. Any two adjacent liquid cooling supports contact the two sides of multiple individual batteries along the first direction, absorbing the heat generated by the individual batteries during charging and discharging. When the coolant leaves the liquid cooling supports, this heat is carried away from the battery pack, achieving heat dissipation for the multiple individual batteries. Furthermore, the clearance groove in the support portion also limits the movement of the liquid cooling support member along the first direction, effectively improving the installation stability of the liquid cooling support member, thereby improving the installation stability of the multiple individual batteries, and ultimately enhancing the stability and reliability of the battery pack. The battery pack provided in this application enhances the ability to secure the liquid cooling system, thereby improving stability, reliability, and safety. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A perspective view of the battery pack in some embodiments of this application is shown;

[0024] Figure 2 A cross-sectional schematic diagram of a battery pack in some embodiments of this application is shown;

[0025] Figure 3 It shows Figure 2 Enlarged schematic diagram of the structure of section A in the middle;

[0026] Figure 4 An exploded view of the battery pack in some embodiments of this application is shown;

[0027] Figure 5 This paper shows an exploded view of the battery pack in some embodiments of the present application.

[0028] Figure 6 A perspective view of the battery pack without the bottom plate of the casing is shown in some embodiments of this application;

[0029] Figure 7A partially exploded and enlarged schematic diagram of the battery pack in some embodiments of this application is shown.

[0030] Explanation of key component symbols:

[0031] 100 - Battery pack; 110 - Housing; 111 - Support; 1111 - Clearance groove; 112 - Second receiving space; 113 - Second exhaust channel; 114 - Second explosion-proof valve; 115 - First exhaust port; 116 - Second side wall; 1161 - Second exhaust port; 117 - First side wall; 1181 - First connecting wall; 11811 - Limiting groove; 1182 - Second connecting wall; 119 - Body; 120 - Liquid cooling support; 121 - First Support plate; 122-Liquid cooling plate; 1221-Current collector; 12211-Connecting pipe; 1222-Liquid cooling channel; 1223-Opening; 123-Second support plate; 1231-First connecting hole; 124-First accommodating space; 130-Single battery; 131-First explosion-proof valve; 140-Liquid cooling pipe; 150-Fastener; 160-Insulating adhesive layer; 170-First exhaust channel; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation

[0032] The embodiments of this application 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 application, and should not be construed as limiting this application.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] 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 application, "multiple" means two or more, unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," 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 application according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] like Figure 1 and Figure 2 As shown, an embodiment of this application provides a battery pack 100, mainly used in electrical devices. The battery pack 100 has a first direction X, a second direction Y, and a third direction Z that are perpendicular to each other. The battery pack 100 includes: a housing 110, a plurality of liquid-cooled support members 120, and a plurality of individual batteries 130.

[0038] See also Figure 3 and Figure 4 The housing 110 includes a body 119, a first sidewall 117, and a support portion 111. The body 119 has the first sidewall 117 and the support portion 111 at at least one end along the second direction Y. The first sidewall 117 and the support portion 111 are spaced apart along the second direction Y to form a second accommodating space 112. The support portion 111 has a clearance groove 1111. Multiple liquid-cooled support members 120 extend along the second direction Y and are spaced apart along the first direction X within the housing 110. Adjacent liquid-cooled support members 120 form a first accommodating space 124. At least one end of each liquid-cooled support member 120 along the second direction Y passes through the clearance groove 1111 and is disposed within the second accommodating space 112. Multiple individual batteries 130 are arranged along the second direction Y within the first accommodating space 124.

[0039] The battery pack 100 provided in the embodiments of this application uses multiple liquid-cooled support members 120. These multiple liquid-cooled support members 120 extend along the second direction Y and are spaced apart along the first direction X within the housing 110, so that any two adjacent liquid-cooled support members 120 form a first accommodating space 124. Multiple individual batteries 130 are arranged along the second direction Y within the first accommodating space 124, achieving the accommodation and stable installation of the multiple individual batteries 130. This ensures that the multiple individual batteries 130 are securely installed within the housing 110, guaranteeing the stability and reliability of the battery pack 100. Furthermore, by extending the multiple liquid-cooled support members 120 along the second direction Y and spaced apart along the first direction X within the housing 110, they can act as supporting beams, effectively improving the overall torsional stiffness and structural strength of the battery pack 100, thereby ensuring the stability, reliability, and safety of the battery pack 100.

[0040] The body 119 of the housing 110 is provided with a first side wall 117 and a support portion 111 at at least one end along the second direction Y. By arranging the support portion 111 and the first side wall 117 at intervals along the second direction Y, a second receiving space 112 for accommodating the liquid cooling pipe 140 is formed. By opening a clearance groove 1111 on the support portion 111 and inserting at least one end of the liquid-cooled support member 120 along the second direction Y through the clearance groove 1111 and placing it in the second receiving space 112, it is convenient for the liquid-cooled pipe 140 in the second receiving space 112 to be connected to the multiple liquid-cooled support members 120 at the same time, so that the coolant (e.g., cooling water) can flow through the multiple liquid-cooled support members 120 in sequence, and any two adjacent liquid-cooled support members 120 can contact the multiple single cells 130 on both sides along the first direction X, thereby absorbing the heat generated by the multiple single cells 130 during charging and discharging. When the coolant leaves the liquid-cooled support member 120, this part of the heat is carried away from the battery pack 100, thereby achieving heat dissipation for the multiple single cells 130. On the other hand, the clearance groove 1111 of the support portion 111 can also limit the liquid cooling support 120 in the first direction X, so as to prevent the liquid cooling support 120 from moving in the first direction X, effectively improving the installation stability of the liquid cooling support 120, thereby improving the installation stability of multiple individual batteries 130, and further improving the stability and reliability of the battery pack 100. The battery pack 100 provided in this application enhances the fixing ability of the liquid cooling system and improves stability, reliability and safety.

[0041] It should be noted that the housing 110 also includes a second sidewall 116. Both the second sidewall 116 and the main body 119 extend along the second direction Y and are spaced apart along the first direction X. Two support portions 111 are provided, each extending along the first direction X and spaced apart along the second direction Y. Thus, the second sidewall 116, the main body 119, and the two support portions 111 enclose a receiving groove, within which multiple liquid-cooled support members 120 extend along the second direction Y and are spaced apart along the first direction X. The first direction X corresponds to... Figure 1 The X direction corresponds to the second direction Y. Figure 1 In the Y direction, the third direction corresponds to Z. Figure 1 The Z direction in the equation.

[0042] like Figure 2 , Figure 3 and Figure 4 As shown, the liquid-cooled support 120 includes a first support plate 121, a liquid-cooled plate 122, and a second support plate 123. The first support plate 121 and the second support plate 123 are respectively connected to the two ends of the liquid-cooled plate 122 along the third direction Z. The first support plate 121 is disposed on the bottom plate of the housing 110. At least one end of the liquid-cooled plate 122 along the second direction passes through the clearance groove 1111 and is disposed in the second accommodating space 112.

[0043] In this embodiment, the liquid-cooled support 120 includes a liquid-cooled plate 122 and a first support plate 121 and a second support plate 123 respectively connected to the two ends of the liquid-cooled plate 122 along the third direction Z. The first support plate 121 is disposed on the bottom plate of the housing 110, so that the liquid-cooled support 120 is stably disposed on the bottom plate of the housing 110. By setting the number of liquid-cooled support 120 to multiple, and all multiple liquid-cooled support 120 extending along the second direction Y and spaced apart along the first direction X in the housing 110, the first support plate 121, liquid-cooled plate 122 and second support plate 123 of any two adjacent liquid-cooled support 120 form a first accommodating space 124 for accommodating multiple single cells 130.

[0044] By opening a clearance groove 1111 on the support 111 and inserting at least one end of the liquid cooling plate 122 along the second direction Y through the clearance groove 1111 and placing it in the second receiving space 112, it is convenient for the liquid cooling pipe 140 in the second receiving space 112 to communicate simultaneously with the liquid cooling plates 122 of the multiple liquid cooling support members 120, so that the coolant (e.g., cooling water) can flow through the liquid cooling plates 122 of the multiple liquid cooling support members 120 in sequence, and any two adjacent liquid cooling plates 122 can contact the multiple individual batteries 130 on both sides along the first direction X, thereby absorbing the heat generated by the multiple individual batteries 130 during charging and discharging. When the coolant leaves the liquid cooling plate 122, this part of the heat is carried away from the battery pack 100, thereby achieving heat dissipation for the multiple individual batteries 130. On the other hand, the clearance groove 1111 of the support part 111 can also limit the liquid cooling plate 122 in the first direction X to prevent the liquid cooling support 120 from moving in the first direction X, effectively improving the installation stability of the liquid cooling support 120, thereby improving the installation stability of multiple single cells 130, and further improving the use stability and reliability of the battery pack 100.

[0045] like Figure 1 , Figure 4 and Figure 7 As shown, in one embodiment of this application, the battery pack 100 further includes a liquid cooling pipe 140, which is located in the second accommodating space 112. A current collector 1221 is provided at one end of the liquid cooling plate 122 near the support portion 111, and the liquid cooling pipe 140 is connected to the current collector 1221.

[0046] The liquid cooling plate 122 has a liquid cooling channel 1222 and an opening 1223 communicating with the liquid cooling channel 1222. The flow collector 1221 is covered on the opening 1223 and has a flow collection cavity communicating with the opening 1223. Both ends of the flow collector 1221 along the first direction X are provided with connecting pipes 12211 that communicate with the flow collection cavity and the liquid cooling pipe 140, respectively.

[0047] In this embodiment, a manifold 1221 is provided at one end of the liquid cooling plate 122 near the support portion 111 so that the liquid cooling plate 122 can communicate with the liquid cooling pipe 140 through the manifold 1221. The liquid cooling pipe 140 is disposed in the second receiving space 112 so that the liquid cooling pipe 140 can communicate with the liquid cooling plate 122 of the multiple liquid cooling manifolds 1221 simultaneously.

[0048] The liquid cooling plate 122 has a liquid cooling channel 1222 and an opening 1223 communicating with the liquid cooling channel 1222. The manifold 1221 has a manifold cavity. By covering the opening 1223 with the manifold 1221, the manifold cavity can communicate with the liquid cooling channel 1222 through the opening 1223. At the same time, by providing connecting pipes 12211 at both ends of the manifold 1221 along the first direction X, which are respectively connected to the manifold cavity and the liquid cooling pipe 140, the liquid cooling pipe 140 can communicate with the manifold cavity through the connecting pipes 12211, and then with the liquid cooling channel 1222 through the opening 1223. This facilitates the simultaneous communication of the liquid cooling pipe 140 with the liquid cooling plates 122 of multiple liquid cooling manifolds 1221.

[0049] It should be noted that the liquid cooling pipe 140 may include an inlet pipe and an outlet pipe. The inlet pipe and the outlet pipe extend along the first direction X and are respectively disposed in the second receiving space 112 at both ends of the liquid cooling plate 122 along the second direction Y. The inlet pipe is simultaneously connected to the current collector 1221 at one end of the multiple liquid cooling plates 122 along the second direction Y, and the outlet pipe is simultaneously connected to the current collector 1221 at the other end of the multiple liquid cooling plates 122 along the second direction Y. This allows the coolant in the inlet pipe to enter the multiple liquid cooling plates 122 simultaneously through the multiple current collectors 1221 at one end of the multiple liquid cooling plates 122 to absorb the heat generated by the multiple individual batteries 130 during charging and discharging. The coolant after absorbing the heat can be simultaneously discharged to the outlet pipe through the multiple current collectors 1221 at the other end of the multiple liquid cooling plates 122. The inlet pipe and the outlet pipe are circulated and connected to the liquid cooling system to realize continuous cooling of the multiple individual batteries 130.

[0050] like Figure 1 , Figure 4 and Figure 7 As shown in the above embodiments of this application, the housing 110 also has a first connecting wall 1181. The first connecting wall 1181 is located in the second accommodating space 112 and is connected to the support part 111 and the first side wall 117 respectively. The first connecting wall 1181 has a limiting groove 11811 that is adapted to the shape of the current collector 1221. The limiting groove 11811 is connected to the clearance groove 1111.

[0051] In this embodiment, by setting the first connecting wall 1181 in the second accommodating space 112 and connecting it to the support part 111 and the first side wall 117 respectively, the support part 111 and the first side wall 117 are connected as one unit, which effectively improves the strength of the support part 111 and the first side wall 117, thereby improving the installation stability of the liquid cooling support 120 and the liquid cooling pipe 140.

[0052] Meanwhile, by opening a limiting groove 11811 on the first connecting wall 1181 that is adapted to the shape of the collector 1221 and communicates with the clearance groove 1111, the limiting groove 11811 can limit the collector 1221, thereby preventing the collector 1221 from moving and causing it to detach from the liquid cooling plate 122, thus preventing the technical problem of communication failure between the liquid cooling pipe 140 and the liquid cooling plate 122.

[0053] like Figure 1 , Figure 4 and Figure 7 As shown, in one embodiment of this application, the end of the second support plate 123 near the support portion 111 is disposed on the side of the support portion 111 away from the first support plate 121 along the third direction Z.

[0054] In this embodiment, the first support plate 121 is disposed on the bottom plate of the housing 110, so that the first support plate 121 is stably disposed on the bottom plate of the housing 110 under the support of the bottom plate of the housing 110. At the same time, by disposing of the end of the second support plate 123 near the support part 111 on the side of the support part 111 away from the first support plate 121 along the third direction Z, the second support plate 123 is stably disposed on the support part 111 under the support of the support part 111, thereby distributing part of the weight of the bottom plate of the housing 110, so that the weight of the multiple liquid-cooled support members 120 and the multiple single battery cells 130 is evenly distributed on the housing 110, avoiding local stress concentration on the housing 110, thereby improving the structural stability and reliability of the battery pack 100.

[0055] like Figure 1 , Figure 4 and Figure 7 As shown in the above embodiments of this application, the battery pack 100 further includes a fastener 150. The second support plate 123 has a first connecting hole 1231 at one end near the support portion 111. The support portion 111 has a second connecting hole corresponding to the first connecting hole 1231. The fastener 150 passes through the first connecting hole 1231 and the second connecting hole in sequence, so that the second support plate 123 is fastened to the support portion 111.

[0056] In this embodiment, a first connecting hole 1231 is opened at one end of the second support plate 123 near the support portion 111, and a second connecting hole corresponding to the first connecting hole 1231 is opened on the support portion 111. Fasteners 150 are sequentially inserted into the first connecting hole 1231 and the second connecting hole to securely connect the second support plate 123 to the support portion 111. This ensures that the second support plate 123 is stably installed on the support portion 111, preventing the liquid-cooled support component 120 from moving within the housing 110, thus guaranteeing the installation stability of the liquid-cooled support component 120 and consequently ensuring the installation stability of the multiple individual batteries 130. Furthermore, it makes the liquid-cooled support component 120 detachable, facilitating disassembly, repair, or replacement of the liquid-cooled support component 120 and the multiple individual batteries 130.

[0057] For example, the fastener 150 can be a fastening screw, and both the first connecting hole 1231 and the second connecting hole can be fastening screw holes adapted to the fastening screw. The first connecting hole 1231 can also be a through hole without internal threads.

[0058] like Figure 2 and Figure 3 As shown, in one embodiment of this application, an insulating adhesive layer 160 is provided between the first support plate 121 and the bottom plate of the box 110.

[0059] In this embodiment, an insulating adhesive layer 160 is provided between the first support plate 121 and the bottom plate of the housing 110. This serves two purposes: firstly, the insulating adhesive layer 160 provides insulation, effectively isolating the electrical gap between the bottom plate of the housing 110 and the liquid-cooled support member 120, thus improving the safety of the battery pack 100. Secondly, the insulating adhesive layer 160 also serves as an adhesive and fixing layer, ensuring that the liquid-cooled support member 120 is securely mounted on the bottom plate of the housing 110, further enhancing the installation stability of the liquid-cooled support member 120 and the multiple individual batteries 130.

[0060] like Figure 2 , Figure 3 and Figure 6 As shown in the above embodiments of this application, the single battery 130 has a first explosion-proof valve 131 at one end near the first support plate 121 along the third direction Z. Two adjacent first support plates 121, the bottom plate of the housing 110, and the end of the single battery 130 near the first support plate 121 form a first exhaust channel 170. The first exhaust channel 170 extends along the second direction Y. The portion of the first explosion-proof valve 131 facing the bottom plate of the housing 110 and exposed relative to the single battery 130 is located within the first exhaust channel 170.

[0061] In this embodiment, any two adjacent first support plates 121, the bottom plate of the housing 110, and the end of the single battery 130 near the first support plate 121 form a first exhaust channel 170 extending along the second direction Y. A first explosion-proof valve 131 is provided at the end of the single battery 130 near the first support plate 121 along the third direction Z, with the portion of the first explosion-proof valve 131 facing the bottom plate of the housing 110 and exposed relative to the single battery 130 located within the first exhaust channel 170. Thus, in the event of thermal runaway of the single battery 130, the high-temperature emissions emitted by the first explosion-proof valve 131 can be discharged through the first exhaust channel 170, effectively reducing the risk of thermal runaway propagation in the battery pack 100 and improving the safety of the battery pack 100.

[0062] In the above embodiments of this application, the end of the single battery cell 130 away from the first support plate 121 has an electrode post.

[0063] In this embodiment, by placing the terminal post at the end of the individual battery 130 away from the first support plate 121, it is convenient to simultaneously connect to the terminals of multiple individual batteries 130 via a busbar, thus realizing the series and parallel connection of multiple individual batteries 130. On the other hand, since the heat generated by the individual battery 130 during charging and discharging mainly comes from the terminal post area, compared with the prior art where the liquid cooling plate is placed at the end of the individual battery away from the terminal post, this application effectively shortens the heat transfer path and increases the contact area between the individual battery 130 and the liquid cooling plate 122 by setting any two adjacent liquid cooling plates 122 to contact the multiple individual batteries 130 on both sides along the first direction X, thereby effectively improving the heat dissipation efficiency and thus improving the stability, reliability and safety of the battery pack 100.

[0064] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown in the above embodiments of this application, the housing 110 further includes a second explosion-proof valve 114, a second connecting wall 1182, and a second side wall 116. The second connecting wall 119 is located within the second accommodating space 112 and is connected to the support portion 111 and the first side wall 117 respectively. The second connecting wall 1182 is spaced along the third direction Z at a distance from the liquid cooling pipe 140 on the side of the first connecting wall 1181 to form a second exhaust channel 113. The second connecting wall 1182 has a first exhaust hole 115. The second side wall 116 is located at one end of the first side wall 117 along the first direction X and has a second exhaust hole 1161. The second exhaust channel 113 communicates with the first exhaust hole 115 and the second exhaust hole 1161 respectively. The first exhaust channel 170 communicates with the second exhaust channel 113 through the first exhaust hole 115. The second explosion-proof valve 114 covers the second exhaust hole 1161.

[0065] In this embodiment, a second exhaust channel 113 is configured to communicate with both the first exhaust port 115 and the second exhaust port 1161. The first exhaust port 115 is connected to the first exhaust channel 170, and the second explosion-proof valve 114 covers the second exhaust port 1161. Thus, when a single battery cell 130 experiences thermal runaway, the high-temperature emissions from the first explosion-proof valve 131 can sequentially enter the second exhaust channel 113 via the first exhaust channel 170 and the first exhaust port 115, and then be discharged outside the battery pack 100 via the second exhaust channel 113, the second exhaust port 1161, and the second explosion-proof valve 114. This effectively reduces the risk of thermal runaway propagation in the battery pack 100 and improves the safety of the battery pack 100.

[0066] In the above embodiments of this application, the battery pack 100 further includes a sealing element, which is sleeved on the connecting pipe 12211 and contacts the inner wall of the liquid cooling pipe 140.

[0067] In this embodiment, a sealing element is provided on the connecting pipe 12211 and in contact with the inner wall of the liquid cooling pipe 140 to seal the connection gap between the liquid cooling pipe 140 and the connecting pipe 12211, thereby preventing coolant leakage and corrosion of the housing 110.

[0068] In any of the above embodiments of this application, the battery pack 100 further includes an insulating and thermally conductive adhesive layer, which is connected to the liquid cooling plate 122 and the individual battery cell 130 respectively.

[0069] In this embodiment, by providing insulating and thermally conductive adhesive layers connected to the liquid cooling plate 122 and the individual battery 130 respectively, the heat generated by the individual battery 130 during charging and discharging can be transferred to the liquid cooling plate 122 through the thermal conductivity of the insulating and thermally conductive adhesive layer. This heat is then carried away from the battery pack 100 by the coolant flowing through the liquid cooling plate 122, achieving cooling of the individual battery 130. Furthermore, the adhesive layer ensures that the individual battery 130 is securely installed within the first receiving space 124, improving the installation stability of the individual battery 130. In addition, the insulating and thermally conductive adhesive layer also provides insulation, effectively isolating the electrical gap between the individual battery 130 and the liquid cooling plate 122, thus improving the safety of the battery pack 100.

[0070] Embodiments of this application also provide an electrical device, including the battery pack 100 in any of the above embodiments.

[0071] The electrical device has the battery pack 100 in any of the above embodiments, and therefore has all the beneficial effects of the battery pack 100, which will not be described in detail here.

[0072] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0073] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A battery pack (100) having a first direction (X), a second direction (Y), and a third direction (Z) that are perpendicular to each other, characterized in that, The battery pack (100) includes: The box (110) includes a body (119), a first side wall (117) and a support (111). The body (119) is provided with the first side wall (117) and the support (111) at least one end along the second direction (Y). The first side wall (117) and the support (111) are spaced apart along the second direction (Y) to form a second accommodating space (112). The support (111) is provided with a relief groove (1111). Multiple liquid-cooled support members (120) are provided, each extending along the second direction (Y) and spaced apart along the first direction (X) within the housing (110). Two adjacent liquid-cooled support members (120) form a first accommodating space (124). At least one end of each liquid-cooled support member (120) along the second direction (Y) passes through the clearance groove (1111) and is disposed within the second accommodating space (112). Multiple individual cells (130) are arranged in the first accommodating space (124) along the second direction (Y).

2. The battery pack according to claim 1, characterized in that, The liquid-cooled support (120) includes a first support plate (121), a liquid-cooled plate (122), and a second support plate (123). The first support plate (121) and the second support plate (123) are respectively connected to the two ends of the liquid-cooled plate (122) along the third direction (Z). The first support plate (121) is disposed on the bottom plate of the housing (110). At least one end of the liquid-cooled plate (122) along the second direction passes through the clearance groove (1111) and is disposed in the second accommodating space (112).

3. The battery pack according to claim 2, characterized in that, The battery pack (100) also includes a liquid cooling pipe (140), which is located in the second accommodating space (112). A current collector (1221) is provided at one end of the liquid cooling plate (122) near the support (111), and the liquid cooling pipe (140) is connected to the current collector (1221). The liquid cooling plate (122) has a liquid cooling channel (1222) and an opening (1223) communicating with the liquid cooling channel (1222). The collector (1221) is covered on the opening (1223) and has a collection cavity communicating with the opening (1223). The collector (1221) is provided with connecting pipes (12211) at both ends along the first direction (X) respectively communicating with the collection cavity and the liquid cooling pipe (140).

4. The battery pack according to claim 3, characterized in that, The housing (110) further includes a first connecting wall (1181), which is located in the second accommodating space (112) and is connected to the support (111) and the first side wall (117) respectively. The first connecting wall (1181) has a limiting groove (11811) that is adapted to the shape of the current collector (1221), and the limiting groove (11811) is connected to the clearance groove (1111).

5. The battery pack according to claim 2, characterized in that, The second support plate (123) is located at one end near the support part (111) on the side of the support part (111) away from the first support plate (121) along the third direction (Z).

6. The battery pack according to claim 5, characterized in that, The battery pack (100) also includes a fastener (150). The second support plate (123) has a first connection hole (1231) at one end near the support part (111). The support part (111) has a second connection hole corresponding to the first connection hole (1231). The fastener (150) passes through the first connection hole (1231) and the second connection hole in sequence to fasten the second support plate (123) to the support part (111).

7. The battery pack according to claim 2, characterized in that, An insulating adhesive layer (160) is provided between the first support plate (121) and the bottom plate of the box (110).

8. The battery pack according to claim 4, characterized in that, The single battery (130) has a first explosion-proof valve (131) at one end near the first support plate (121) along the third direction (Z). Two adjacent first support plates (121), the bottom plate of the housing (110) and the end of the single battery (130) near the first support plate (121) form a first exhaust channel (170). The first exhaust channel (170) extends along the second direction (Y). The portion of the first explosion-proof valve (131) facing the bottom plate of the housing (110) and exposed relative to the single battery (130) is located in the first exhaust channel (170).

9. The battery pack according to claim 8, characterized in that, The enclosure (110) further includes a second explosion-proof valve (114), a second connecting wall (1182), and a second side wall (116). The second connecting wall (1182) is located within the second accommodating space (112) and is connected to the support (111) and the first side wall (117) respectively. The second connecting wall (1182) is spaced along the third direction (Z) on the side of the first connecting wall (1181) away from the liquid cooling pipe (140) to form a second exhaust channel (113). The second connecting wall (1182) has a first... An exhaust port (115) is provided, and a second sidewall (116) is provided at one end of the first sidewall (117) along the first direction (X). The second sidewall (116) is provided with a second exhaust port (1161). The second exhaust channel (113) is connected to the first exhaust port (115) and the second exhaust port (1161) respectively. The first exhaust channel (170) is connected to the second exhaust channel (113) through the first exhaust port (115). The second explosion-proof valve (114) covers the second exhaust port (1161).

10. The battery pack according to claim 3, characterized in that, The battery pack (100) also includes a seal that is fitted onto the connecting pipe (12211) and contacts the inner wall of the liquid cooling pipe (140).

11. An electrical appliance, characterized in that, The battery pack (100) includes any one of claims 1 to 10.

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