A support, a CCS device, a battery module, a battery pack and a power utilization equipment

Abstract

One or more embodiments of the present application provide a bracket, a CCS device, a battery module, a battery pack and a power utilization device, relating to the technical field of batteries, the bracket is arranged on a battery of a battery module and is between a positive electrode end and a negative electrode end of the battery; the bracket comprises a bracket body and a plurality of through-hole structures, the plurality of through-hole structures are spaced apart on the bracket body along a first direction corresponding to an arrangement direction of the plurality of batteries, and the through-hole structures are used to correspond to and communicate with positions of explosion-proof valves of the batteries; an opening area of one end of the through-hole structure away from the battery is smaller than an opening area of one end of the through-hole structure close to the battery. One or more embodiments of the present application can effectively control problems such as high temperature and short circuit of part of the batteries of the battery module caused by thermal runaway.

Description

[0001] This case is a divisional application with application number 2024115612822, application date November 4, 2024, entitled "A CCS device, battery module, battery pack and electrical equipment". Technical Field

[0002] This application relates to the field of battery technology, and in particular to a bracket, a CCS device, a battery module, a battery pack, and an electrical device. Background Technology

[0003] Currently, a battery pack is an integrated unit assembled from multiple battery modules, used to store and provide electrical energy. Battery modules are generally connected in parallel or series to increase the voltage, capacity, or power of the battery system.

[0004] In related technologies, a battery module mainly includes a fixing component, multiple batteries, and multiple conductive connectors. The batteries are fixed together as a single unit by the fixing component. Adjacent batteries, as well as batteries at the ends of the battery module, are electrically connected to batteries in other battery modules via corresponding conductive connectors. Each battery is equipped with an explosion-proof valve. When the battery experiences thermal runaway during charging or discharging, causing its internal pressure to increase, the electrolyte inside the battery is ejected from the explosion-proof valve to relieve pressure and prevent explosion.

[0005] However, the inventors recognized that in actual use, if some batteries eject electrolyte due to thermal runaway, the electrolyte will directly spread to the electrode posts of other adjacent batteries or other adjacent battery modules, which may cause accidents such as high temperature and short circuit in the battery module, thereby affecting the operation of the entire battery module. Summary of the Invention

[0006] This application provides one or more embodiments of a bracket, a CCS device, a battery module, a battery pack, and an electrical device to solve or at least partially alleviate the problem in the related art where thermal runaway of some batteries in a battery module affects the operation of other batteries.

[0007] The first aspect of this application provides a support, which adopts the following technical solution:

[0008] A bracket is provided for mounting on a battery of a battery module and positioned between the positive and negative terminals of the battery. The bracket includes a bracket body and a plurality of through-hole structures, which are spaced apart on the bracket body along a first direction corresponding to the arrangement direction of the plurality of batteries. The through-hole structures are configured to correspond to and communicate with the position of the explosion-proof valve of the battery.

[0009] The opening area at the end of the through-hole structure furthest from the battery is smaller than the opening area at the end of the through-hole structure closest to the battery.

[0010] In some embodiments, the through-hole structure protrudes and extends relative to the bracket body in a direction away from the battery; the bracket also includes a protective component disposed on at least one of the bracket body and the through-hole structure, the protective component being used to reduce the spread of electrolyte ejected from the battery through the explosion-proof valve outside the bracket;

[0011] The protective component includes a first protective structure, which includes a plurality of first oblique angle structures disposed on the circumferential inner wall of the through hole structure.

[0012] In some embodiments, the first protective structure further includes a first inner wall disposed within the through-hole structure. The first inner wall includes a first hole wall and a second hole wall. The first hole wall and the second hole wall are arranged along a second direction, and the inclination directions of the first hole wall and the second hole wall are opposite. The second direction refers to the direction along the through-hole structure from one end away from the battery to one end of the through-hole structure close to the battery. The second direction is perpendicular to the first direction.

[0013] In some embodiments, the first inner wall further includes a first step, which is disposed at the connection between the first hole wall and the second hole wall.

[0014] In some embodiments, the first protective structure further includes a first inner wall disposed within the through-hole structure.

[0015] The first inner wall includes a first hole wall, which is inclined from top to bottom toward the center of the through hole structure; or, the first inner wall includes a second hole wall, which is inclined from bottom to top toward the center of the through hole structure.

[0016] In some embodiments, the support body has a flow channel structure on the side facing the battery, and the first inner wall further includes a third hole wall. The third hole wall is set at an angle to the inner wall of the flow channel structure along a third direction, and the third direction is perpendicular to the first direction and the second direction, respectively.

[0017] In some embodiments, the flow channel structure extends along the first direction, and the third hole wall and the second hole wall are respectively connected to the flow channel structure.

[0018] In some embodiments, in the third direction, the dimension of the end of the flow channel structure away from the battery is smaller than the dimension of the end of the flow channel structure closer to the battery.

[0019] In some embodiments, the through-hole structure is a polygonal structure at the opening, and the first beveled structure is respectively provided at the four corners of the polygonal structure.

[0020] In some embodiments, the protection component further includes a second protection structure, the second protection structure including a first current limiting part, a flow channel structure being provided on one side wall of the bracket body facing the battery, the first current limiting part being respectively provided at both ends of the bracket body along the first direction, one end of the first current limiting part communicating with the through hole structure, and the end of the first current limiting part away from the through hole structure being used to be closely attached to the battery.

[0021] In some embodiments, the surface of the first flow-limiting portion away from the through-hole structure is inclined.

[0022] In some embodiments, the bracket further includes a protection component, the protection component including a fourth protection structure, the fourth protection structure including a third current limiting portion, the bracket body having a flow channel structure on one side wall facing the battery, the bracket body having the third current limiting portion distributed on both sides of the flow channel structure along a third direction on one side facing the battery, the third current limiting portion extending along the first direction; the third direction is perpendicular to the first direction.

[0023] In some embodiments, the fourth protection structure further includes a fourth current limiting part. The bracket body has two fourth current limiting parts arranged at intervals along a third direction on the side facing the battery. The fourth current limiting parts are spaced apart from the third current limiting parts, and the fourth current limiting parts are located on the side of the third current limiting parts away from the flow channel structure.

[0024] The fourth and third flow-limiting parts form a buffer groove with the support body.

[0025] Compared with related technologies, one or more embodiments of this application include at least one of the following beneficial technical effects:

[0026] The battery module mainly includes a bracket, which can be installed on the side of the battery with positive and negative terminals. The bracket mainly includes a bracket body and multiple through-hole structures. The bracket has multiple through-hole structures arranged at intervals along a first direction, and the multiple through-hole structures can correspond one-to-one with the positions of the explosion-proof valves of multiple batteries. When some batteries in the battery module experience thermal runaway and their internal pressure increases, the electrolyte inside the battery will be ejected from the battery's explosion-proof valve, thereby realizing the venting and depressurization operation of the battery.

[0027] Because the opening area at the end of the through-hole structure furthest from the battery is smaller than the opening area at the end closest to the battery—in other words, the through-hole structure is narrower at the top and wider at the bottom—it not only limits the radial cross-section of the electrolyte ejected from the through-hole structure, reducing the flow rate of electrolyte outside the support, but also ensures that some of the electrolyte ejected from the through-hole structure is retained on the inner wall of the through-hole structure when it falls back into the structure due to gravity, thereby further reducing the thermal spread of the electrolyte. Furthermore, since the support is located between the positive and negative terminals on the same side of the battery, it reduces the flow rate of electrolyte ejected from the explosion-proof valve to the positive and negative terminals of the battery, correspondingly reducing the possibility of short-circuit faults in the battery.

[0028] A second aspect of this application provides a CCS device, which adopts the following technical solution:

[0029] A CCS device includes a support as described above.

[0030] In some embodiments, the CCS device further includes a plurality of conductive connectors, which are spaced apart along the first direction and are used to electrically connect to the battery; the bracket further includes a connecting structure, which is provided at the end of the bracket body along a third direction, and the conductive connectors are connected to the connecting structure; the third direction is perpendicular to the first direction.

[0031] In some embodiments, the connection structure includes a plurality of snap-fit ​​components, and each of the conductive connectors is snap-fitted to each of the snap-fit ​​components.

[0032] In some embodiments, the buckle assembly includes a support plate and a buckle member, the support plate and the buckle member being spaced apart on a side wall of the threading structure away from the through hole structure, a portion of the conductive connector being disposed on the support plate, the conductive connector having a slot, the slot engaging with the buckle member.

[0033] A third aspect of this application provides a battery module, which adopts the following technical solution:

[0034] A battery module includes multiple batteries and a CCS device as described above.

[0035] Therefore, since the battery module includes a CCS device, the battery module has at least all the technical effects of the CCS device, which will not be elaborated here.

[0036] In some embodiments, the battery module further includes end plates and connecting strips. The end plates are respectively disposed at both ends of the plurality of batteries along a first direction. The connecting strips surround the plurality of batteries and the end plates and are used to fix the plurality of batteries into an integral structure.

[0037] A fourth aspect of this application provides a battery pack, which adopts the following technical solution:

[0038] A battery pack includes a bracket as described above; includes a CCS device as described above; or includes a battery module as described above.

[0039] Therefore, since the battery pack includes a bracket or CCS device or battery module, the battery module has at least all the technical effects of the bracket or CCS device or battery module, which will not be elaborated here.

[0040] A fifth aspect of this application provides an electrical appliance that adopts the following technical solution:

[0041] An electrical device includes a battery pack as described above.

[0042] Since the electrical equipment includes a battery pack, it possesses at least all the technical benefits of the battery pack, which will not be elaborated upon here. Attached Figure Description

[0043] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this application and are not intended to limit this application.

[0044] Figure 1 This is one of the partial schematic diagrams of a battery module according to some embodiments of this application.

[0045] Figure 2 This is one of the partial schematic diagrams of a bracket according to some embodiments of this application.

[0046] Figure 3 This is a second partial schematic diagram of a bracket according to some embodiments of this application.

[0047] Figure 4 This is a partial structural schematic diagram of a bracket according to some embodiments of this application.

[0048] Figure 5 for Figure 4 A magnified structural diagram of point A in the middle.

[0049] Figure 6 This is a partial schematic diagram of a bracket according to some embodiments of this application.

[0050] Figure 7 This is a partial schematic diagram of a bracket according to some embodiments of this application.

[0051] Figure 8 This is a partial schematic diagram of a bracket according to some embodiments of this application.

[0052] Figure 9 for Figure 8 A magnified structural diagram at point B in the middle.

[0053] Figure 10 This is a partial schematic diagram of a bracket according to some embodiments of this application.

[0054] Figure 11 This is a second partial schematic diagram of a battery module according to some embodiments of this application.

[0055] Figure 12 This is a partial schematic diagram of a battery module according to some embodiments of this application.

[0056] Figure 13 This is one of the exploded schematic diagrams of a CCS device according to some embodiments of this application.

[0057] Figure 14 This is one of the structural schematic diagrams of a CCS device according to some embodiments of this application.

[0058] Figure 15 for Figure 13 A magnified structural diagram at point C.

[0059] Figure 16 This is a second exploded schematic diagram of a CCS device according to some embodiments of this application.

[0060] Figure 17 This is a second schematic diagram of the structure of a CCS device according to some embodiments of this application.

[0061] Figure 18 for Figure 16 A magnified structural diagram at point D.

[0062] Figure 19 This is a schematic diagram of the structure of a battery module according to some embodiments of this application.

[0063] Figure 20 This is a partial structural schematic diagram of a battery module according to some embodiments of this application.

[0064] Explanation of reference numerals in the attached figures:

[0065] 1-Battery; 11-Positive terminal; 12-Negative terminal; 13-Explosion-proof valve; 2-Bracket; 21-Bracket body; 210-Flow channel structure; 2101-First sidewall; 2102-Second sidewall; 2103-Third sidewall; 211-Limiting hole; 22-Protective component; 221-First protective structure; 2210-First oblique structure; 2211-First hole wall; 2212-Second hole wall; 2213-First step; 2214-Third hole wall; 222-Second protective structure; 2220-First current limiting part; 223-Third protective structure; 2230-Second limiting part Flow section; 2231-First groove structure; 2232-Reinforcing rib; 224-Fourth protective structure; 2240-Third current limiting section; 2241-Fourth current limiting section; 2242-Buffer groove; 23-Through hole structure; 24-Snap-on assembly; 241-Support plate; 2410-Notch; 242-First limiting member; 243-Snap-on member; 244-Second limiting member; 25-Threading structure; 251-Second groove structure; 2510-Allowing hole; 252-Fixing section; 3-Conductive connector; 31-Slot; 4-Wire harness; 5-End plate; 6-Connecting strip; 7-Fastener. Detailed Implementation

[0066] To make the above-mentioned objects, features, and advantages of this application more apparent and understandable, specific embodiments of this application are described in detail below with reference to the accompanying drawings. Although some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the accompanying drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0067] In the attached figures, the Z-axis represents the vertical direction, i.e., up and down, with the positive direction of the Z-axis representing up and the negative direction representing down. The X-axis represents the horizontal direction and is designated as left and right, with the positive direction of the X-axis representing the right and the negative direction representing the left. The Y-axis represents the front and back position, with the positive direction of the Y-axis representing the front and the negative direction representing the back. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing this application and for simplification, 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; therefore, they should not be construed as limitations on this application.

[0068] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the description below. It should be noted that the concepts of "first," "second," etc., mentioned in this application are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0069] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. 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 indicated technical features. 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, unless otherwise stated, "a plurality of" means two or more.

[0070] It should be noted that the terms "one" and "more" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0071] In the description of this application, it should be understood that the terms "center", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this application.

[0072] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication 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.

[0073] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0074] Figure 1 This is one of the partial schematic diagrams of a battery module according to some embodiments of this application.

[0075] Firstly, one or more embodiments of this application disclose a stent. (See also...) Figure 1 The bracket includes a bracket 2, which is used to be mounted on the battery 1 of the battery module and is located between the positive terminal 11 and the negative terminal 12 of the battery 1. The bracket 2 includes a bracket body 21 and a plurality of through-hole structures 23. The plurality of through-hole structures 23 are distributed at intervals on the bracket body 21 along a first direction corresponding to the arrangement direction of the plurality of batteries 1. The through-hole structures 23 are used to correspond to and communicate with the position of the explosion-proof valve 13 of the battery 1.

[0076] The opening area of ​​the through hole structure 23 at the end away from the battery 1 is smaller than the opening area of ​​the through hole structure 23 at the end closer to the battery 1.

[0077] In at least one embodiment, the positive terminal 11 and negative terminal 12 of battery 1 can refer to the positive and negative terminals of battery 1. The bracket 2 can be installed at one end of the battery module where the multiple batteries 1 have the explosion-proof valve 13, and is located at the positive terminal 11 and negative terminal 12 of battery 1. The CCS device is a component installed on the battery pack, and is an abbreviation for wiring harness board integration, acquisition integration, assembly or wiring harness isolation board. It is mainly used for electrical connection, thermal management and mechanical support between multiple batteries 1 in the battery module, and can improve the overall performance of the battery module.

[0078] The first direction can be related to Figure 1 The X-axis in the coordinate system is parallel and can refer to the extension direction of the bracket 2, or the arrangement direction of multiple batteries 1 in the battery module.

[0079] Multiple through-hole structures 23 are spaced apart on the bracket body 21 along a first direction; the position of each through-hole structure 23 corresponds vertically to the position of the explosion-proof valve 13 of the corresponding battery 1. The through-hole structure 23 protruding and extending away from the battery 1 relative to the bracket body 21 means that the through-hole structure 23 has a certain height and protrudes from the bracket body 21 in a direction away from the battery. The vertical distance between the end of the through-hole structure 23 away from the battery 1 (i.e., the top of the through-hole structure 23) and the battery 1 can range from 1.5mm to 11.5mm.

[0080] Specifically, the fact that the opening area of ​​the through hole structure 23 at the end away from the battery 1 is smaller than the opening area of ​​the through hole structure 23 at the end near the battery 1 means that the opening area of ​​the through hole structure 23 at the end near the battery 1 is larger than the opening area of ​​the through hole structure 23 at the end away from the battery 1. In other words, the through hole structure 23 can have a structure that is narrower at the top and wider at the bottom.

[0081] The opening area of ​​the end of the through-hole structure 23 away from the battery 1 can be slightly smaller than the area of ​​the explosion-proof valve 13, and the opening area of ​​the end of the through-hole structure 23 facing the battery 1 can be slightly larger than the area of ​​the explosion-proof valve 13.

[0082] The battery module mainly includes a bracket 2, which can be installed on the side of the battery 1 with positive and negative terminals 12. The bracket 2 mainly includes a bracket body 21, a protective component 22, and multiple through-hole structures 23. The bracket 2 is provided with multiple through-hole structures 23 arranged at intervals along a first direction, and the multiple through-hole structures 23 can correspond one-to-one with the positions of the explosion-proof valves 13 of multiple batteries 1. When some batteries 1 in the battery module experience thermal runaway and their internal pressure increases, the electrolyte inside the battery 1 will be ejected from the explosion-proof valve 13 of the battery 1, thereby realizing the venting and depressurization operation of the battery 1.

[0083] Since the opening area of ​​the through-hole structure at the end furthest from the battery is smaller than the opening area at the end closest to the battery, in other words, the through-hole structure 23 has a structure that is narrow at the top and wide at the bottom. This not only limits the radial cross-section of the electrolyte ejected from the through-hole structure 23 and reduces the flow rate of the electrolyte ejected from the support 2, but also causes some of the electrolyte ejected from the through-hole structure 23 to hang on the inner wall of the through-hole structure 23 when it falls into the through-hole structure 23 due to gravity, thereby further reducing the thermal spread of the electrolyte.

[0084] Furthermore, since the bracket 2 is located between the positive terminal 11 and the negative terminal 12 on the same side of the battery 1, the flow of electrolyte ejected from the explosion-proof valve 13 to the positive terminal 11 and the negative terminal 12 of the battery 1 can be reduced, thereby reducing the possibility of the battery 1 experiencing a short circuit fault.

[0085] In some embodiments, combined with Figure 2 and Figure 3 As shown, the through-hole structure 23 protrudes and extends relative to the bracket body 21 in a direction away from the battery 1; the bracket also includes a protective component 22, which is disposed in at least one of the bracket body 21 and the through-hole structure 23, and the protective component 22 is used to reduce the spread of electrolyte sprayed from the battery 1 through the explosion-proof valve 13 out of the bracket 2;

[0086] The protective component 22 includes a first protective structure 221, which includes a plurality of first oblique structures 2210, which are disposed on the inner circumferential side of the through hole structure 23.

[0087] Specifically, the through-hole structure 23 protruding and extending relative to the support body 21 in a direction away from the battery 1 means that the through-hole structure 23 has a certain height and can protrude from the support body 21 in a direction away from the battery. The vertical distance between the end of the through-hole structure 23 away from the battery 1 (i.e., the top of the through-hole structure 23) and the battery 1 can range from 1.5mm to 11.5mm.

[0088] Furthermore, the through-hole structure 23 is not just a single hole structure, but a combination structure of the through hole and multiple sidewalls corresponding to the inner wall of the through hole.

[0089] In addition, the through-hole structure 23 may protrude and extend relative to the bracket body 21 toward the direction of the battery 1.

[0090] The protective component 22 being disposed on at least one of the bracket body 21 and the through hole structure 23 means that the protective component 22 can be disposed on the bracket body 21, on the through hole structure 23, or on both the bracket body 21 and the through hole structure 23.

[0091] A flow channel structure 210 can be provided on one side wall of the bracket body 21 facing the battery 1, and the flow channel structure 210 can be extended along the first direction.

[0092] Multiple first oblique angle structures 2210 can be provided at intervals on the upper end of the inner wall of each through hole structure 23. The first oblique angle structure 2210 can be understood as a structure that has an angle with the upper end of the two adjacent inner sides of the through hole structure 23.

[0093] In at least one embodiment, since the through-hole structure 23 protrudes and extends away from the battery 1 relative to the support body 21, the through-hole structure 23 is designed to protrude from the support body 21 and has a certain height relative to the top of the battery 1. This design can provide protection for the electrolyte sprayed from the explosion-proof valve 13 from all sides, thereby reducing the uncertainty of the electrolyte spraying direction. At the same time, the flow channel structure 210 on the side wall of the support body 21 facing the battery 1 can help the lateral (first direction) heat flow diffusion of the electrolyte sprayed from the explosion-proof valve 13, while the through-hole structure 23 protruding from the support body 21 can help the vertical heat flow diffusion of the electrolyte. This dual diffusion method effectively reduces the height and flow rate of internal heat flow caused by the unstable internal and external air pressure during the instant of loss of control of a single battery 1 or part of the battery 1, and promotes the rapid diffusion of heat flow to the airflow balance state of the entire battery pack.

[0094] Furthermore, after the electrolyte is ejected from the explosion-proof valve 13 of the battery 1, the electrolyte can be confined to the bracket 2 by the protective component 22 installed on the bracket body 21. Specifically, the protective component 22 can confine the electrolyte between the bracket 2 and the battery 1, and to the end face of the bracket 2 away from the battery 1. This can effectively reduce the degree of heat spread of the electrolyte overflow outside the bracket 2, so as to provide safety protection for other normal batteries 1 or other battery modules in the battery module other than the battery 1 that has thermal runaway, thereby reducing the accident range of battery 1 and ensuring the safe operation of normal batteries 1 in the battery module.

[0095] The multiple first oblique structures 2210 located at the upper end of the inner wall of the through-hole structure 23 can also effectively prevent the sprayed electrolyte from spreading outward, and solidify or stably adhere to the surrounding inner wall during subsequent normal operation, or fall into the battery with gravity.

[0096] Figure 2 This is one of the partial schematic diagrams of the support 2 according to some embodiments of this application. Figure 3 This is a second partial schematic diagram of a support 2 according to some embodiments of this application.

[0097] In some embodiments, combined with Figure 2 and Figure 3 As shown, the through-hole structure 23 is a polygonal structure at the opening, and the first oblique angle structure 2210 is respectively provided at the four corners of the polygonal structure.

[0098] In at least one embodiment, the openings of the through-hole structure 23 at the end furthest from the battery 1 (e.g., the top) and at the end closest to the battery 1 (e.g., the bottom) are both polygonal in shape. Figure 2 and Figure 3As shown, the inner wall of the through hole structure 23 has a long side and a total of eight side walls corresponding to multiple first oblique angle structures 2210. Therefore, each through hole structure 23 has four first oblique angle structures 2210, which are located at the four corners of the through hole structure 23.

[0099] Because the through-hole structure 23 of the bracket 2 is provided with a polygonal structure above the explosion-proof valve 13 of different batteries in the battery module, it can be compatible with the size of the explosion-proof valve 13 of different batteries 1. This polygonal structure can not only quickly release the hot gas flow that is ejected in the instant that the battery 1 runs out of control, reducing the phenomenon of squeezing and blockage, but also play a certain role in protecting the ejected electrolyte.

[0100] In some embodiments, combined with Figure 2 and Figure 3 As shown, the first protective structure 221 further includes a first inner wall disposed within the through hole structure 23. The first inner wall includes a first hole wall 2211 and a second hole wall 2212. The first hole wall 2211 and the second hole wall 2212 are arranged along a second direction, and the inclination directions of the first hole wall 2211 and the second hole wall 2212 are opposite. The second direction is perpendicular to the first direction.

[0101] In at least one embodiment, the first protective structure 221 further includes two first inner walls disposed within the through hole structure 23, which may be located on opposite sides of the flow channel structure 210.

[0102] The second direction can be combined with Figure 2 , Figure 3 In a coordinate system, the Z-axis direction can refer to the vertical direction or the up-down direction, so the second direction can be perpendicular to the first direction.

[0103] The first inner wall can be a bent inner wall. Specifically, the first inner wall includes a first hole wall 2211 and a second hole wall 2212 arranged along the second direction. The opposite inclination directions of the first hole wall 2211 and the second hole wall 2212 can be understood as follows: the first hole wall 2211 is inclined from top to bottom toward the center of the through hole structure 23. In other words, the inner diameter of the through hole structure 23 at the first hole wall 2211 gradually decreases from top to bottom; while the second hole wall 2212 is inclined from bottom to top toward the center of the through hole structure 23. In other words, the inner diameter of the through hole structure 23 at the second hole wall 2212 gradually increases from top to bottom. Therefore, the connection between the first hole wall 2211 and the second hole wall 2212 is the bent part of the first inner wall.

[0104] The opposite inclination directions of the first hole wall 2211 and the second hole wall 2212 can also be understood as the first hole wall 2211 being parallel to the second direction. In other words, the first hole wall 2211 is a vertical plane, while the second hole wall 2212 is parallel to the first hole wall 2211, for example, the second hole wall 2212 is inclined from bottom to top toward the center of the through hole structure 23.

[0105] Both of the above-mentioned inclination methods of the first hole wall 2211 and the second hole wall 2212 can make the through hole structure 23 have a structure that is narrow at the top and wide at the bottom.

[0106] When the battery module experiences thermal propagation in part of the battery 1, the first hole wall 2211 is inclined from top to bottom toward the center of the through-hole structure 23. In other words, the through-hole structure 23 has a structure that is narrower at the top and wider at the bottom at the first hole wall 2211, which is equivalent to increasing the top area of ​​the through-hole structure 23, thereby accommodating more electrolyte falling downwards due to gravity. Since the second hole wall 2212 is inclined from bottom to top toward the center of the through-hole structure 23, the second hole wall 2212 can effectively block most of the electrolyte sprayed from the explosion-proof valve that is close to the second hole wall 2212, allowing the electrolyte to hang on the second hole wall 2212 and further allowing the electrolyte to flow downwards along the second hole wall 2212 under the action of gravity. Considering that if the electrolyte of battery 1 is sprayed outwards from the center of the through-hole structure 23, the electrolyte will hang on the side walls of the first hole wall 2211 and the second hole wall 2212 under the action of gravity.

[0107] Unlike the above embodiments, in other embodiments of the present invention, the first hole wall 2211 and the second hole wall 2212 in the first inner wall may also be straight inner walls, for example, the first hole wall 2211 and the second hole wall 2212 may be parallel to the second direction.

[0108] In some embodiments, combined with Figure 3 and Figure 5 As shown, the first inner wall also includes a first step 2213, which is disposed at the connection between the first hole wall 2211 and the second hole wall 2212.

[0109] In at least one embodiment, the first step 2213 means that the connection between the first hole wall 2211 and the second hole wall 2212 is not a straight line, but the connection between the first hole wall 2211 and the second hole wall 2212 has a certain height or thickness along the second direction.

[0110] Because a first step 2213 is provided between the first hole wall 2211 and the second hole wall 2212, the first step 2213 further effectively reduces the spray flow rate of the electrolyte sprayed upward through the explosion-proof valve 13. Under the constraint of the second hole wall 2212 and the first step 2213, the spray flow rate of the electrolyte will be reduced. Some of the electrolyte sprayed on the first hole wall 2211 flows downward along the inclined direction of the first hole wall 2211 under the action of gravity. Furthermore, the presence of the first step 2213 creates a height difference between the bottom end of the first hole wall 2211 and the top end of the second hole wall 2212, which can also increase the strength of the support 2 in the lateral direction (first direction) and the vertical direction (second direction). Moreover, the provision of the first hole wall 2211 and the second hole wall 2212 also effectively reduces the spray flow rate of the electrolyte in the through-hole structure 23, reduces the amount of electrolyte sprayed out of the through-hole structure 23, and effectively reduces the possibility of thermal propagation and thermal runaway after uncontrolled spraying of the battery 1.

[0111] In some embodiments, combined with Figure 2 and Figure 3 As shown, the support body 21 has a flow channel structure 210 on one side wall facing the battery 1. The first inner wall also includes a third hole wall 2214. The third hole wall 2214 is set at an angle to the inner wall of the flow channel structure 210 along a third direction. The third direction is perpendicular to the first direction and the second direction, respectively.

[0112] In at least one embodiment, the third party can interact with Figure 3 In the coordinate system, the Y-axis is parallel and can refer to the longitudinal direction of the support 2. Therefore, the third direction can be perpendicular to the first and second directions.

[0113] Among them, combined Figure 4 As shown, the flow channel structure 210 may include a first sidewall 2101, two second sidewalls 2102, and two third sidewalls 2103. The first sidewall 2101 may be a plane parallel to the body of the support 2. The two ends of the first sidewall 2101 along a third direction are respectively connected to the corresponding second sidewalls 2102. The two second sidewalls 2102 are set at an angle to the first sidewall 2101. The end of the second sidewall 2102 away from the first sidewall 2101 is connected to the corresponding third sidewall 2103. The third sidewall 2103 can be understood as the sidewall of the flow channel structure 210 along a second direction, such as the bottom wall. The end of the second sidewall 2102 away from the first sidewall 2101 extends obliquely in a direction away from the center of the flow channel structure 210, so the two second sidewalls 2102 may form an "eight" shape.

[0114] The aforementioned third sidewall 2103 can be a plane parallel to the body of the support 2; or it can be set at an angle to the body of the support 2. For example, the end of the third sidewall 2103 facing the second sidewall 2102 extends upward relative to the end of the third sidewall 2103 away from the second sidewall 2102, thereby effectively increasing the channel cross-sectional area of ​​the flow channel structure 210. This not only allows for better control of the electrolyte ejected from the explosion-proof valve 13 in the second direction (e.g., along the...). Figure 4 The vertical direction of the Z-axis of the coordinate system) and the third direction (e.g., along the vertical direction of the Z-axis) and the third direction (e.g., along the vertical direction of the coordinate system) Figure 4 The longitudinal direction of the Y-axis of the coordinate system acts as a barrier, effectively reducing the flow rate of the ejected electrolyte, and to a certain extent solving the problem of internal and external gas pressure heat flow at the moment of ejection, thus better playing a role in stabilizing the heat flow.

[0115] The two opposite ends of the third hole wall 2214 along the third direction can be adjacent to the inner wall (e.g., the second side wall 2102) and the second hole wall 2212 of the flow channel structure 210 along the third direction, respectively. Furthermore, the third hole wall 2214 is set at an angle to the inner wall of the flow channel structure 210 along the third direction. In other words, the third hole wall 2214 is inclined relative to the second hole wall 2212 and the inner wall of the flow channel structure 210 along the third direction.

[0116] Since the third hole wall 2214 is adjacent to the inner sidewall of the flow channel structure 210 along the third direction, and part of the third hole wall 2214 can extend into the inner sidewall of the flow channel structure 210 along the third direction (the second sidewall 2102 of the flow channel structure 210), the slope of the third hole wall 2214 is larger, which can better hinder the electrolyte sprayed out of the explosion-proof valve 13, effectively reduce the flow rate of the sprayed electrolyte, and can solve the problem of internal and external air pressure heat flow at the moment of spraying to a certain extent, better play the role of heat flow stabilization, so that the heat flow flows out from the vertical and horizontal flow channel structure 210, quickly reaching the air pressure flow stabilization state, which helps to reduce the possibility of air pressure blockage above the explosion-proof valve 13 of the battery 1, so that the internal electrolyte flow of the through hole structure 23 increases and more is sprayed, causing the heat spread phenomenon to occur.

[0117] In some embodiments, combined with Figure 3 As shown, the flow channel structure 210 extends along the first direction, and the third hole wall 2214 and the second hole wall 2212 are respectively connected to the flow channel structure 210, and the three have the same size along the second direction.

[0118] In at least one embodiment, the second direction may be... Figure 3 In the coordinate system, the Z-axis is parallel, so the dimensions of the third hole wall 2214, the second hole wall 2212, and the flow channel structure 210 in the second direction are the corresponding heights.

[0119] Since the flow channel structure 210 of the support body 21 extends along the first direction (i.e., is arranged laterally) and is located above the explosion-proof valve 13 of the battery 1, the flow channel structure 210 has a cavity below it; the third hole wall 2214 and the second hole wall 2212 are the same size as the flow channel structure 210 along the second direction, meaning that the top of the third hole wall 2214, the top of the second hole wall 2212 and the top of the flow channel structure 210 are at the same height. Thus, at the moment of injection of the battery 1, the hot gas ejected from the explosion-proof valve can flow in the flow channel structure 210 to achieve a stable gas pressure, reduce the injection flow rate of the electrolyte, and at the same time hinder the ejected electrolyte.

[0120] In some embodiments, combined with Figure 3 As shown, in the third direction, the dimension of the end of the flow channel structure 210 away from the battery 1 is smaller than the dimension of the end of the flow channel structure 210 close to the battery 1.

[0121] In at least one embodiment, the third party can interact with Figure 3 In the coordinate system, the Y-axis is parallel and can refer to the width direction of the flow channel structure 210; the end of the flow channel structure 210 away from the battery 1 is the top end of the flow channel structure 210, and the end of the flow channel structure 210 closer to the battery 1 is the bottom end of the flow channel structure 210. Therefore, in the third direction, the top dimension (i.e., top width) of the flow channel structure 210 is smaller than the bottom dimension (i.e., bottom width) of the flow channel structure 210. In other words, the flow channel structure 210 along the first direction (i.e., Figure 3 The end face shape (in the X-axis direction), or the flow channel structure 210 along... Figure 3 The cross-section of the plane containing YZ in the coordinate system can be a trapezoidal design, which allows the flow channel structure 210 to expand its longitudinal cross-sectional area while ensuring strength. This increases the flow rate of the internal hot gas in the flow channel structure 210, enabling the gas ejected from the explosion-proof valve 13 of the battery 1 to quickly achieve the function of stabilizing the internal and external gas flow.

[0122] In some embodiments, at least one of the bottom and top of the flow channel structure 210 is designed with an arc shape, which can accelerate the flow speed of hot air inside the flow channel structure 210, thereby achieving the effect of reaching a stable air pressure state as soon as possible.

[0123] Figure 6 This is a partial schematic diagram of the support 2 according to some embodiments of this application. Figure 7 This is a partial schematic diagram of a support 2 according to some embodiments of this application.

[0124] In some embodiments, combined with Figure 6 and Figure 7As shown, the protection component 22 further includes a second protection structure 222, which includes a first current limiting part 2220. The support body 21 has a flow channel structure 210 on one side wall facing the battery 1. The first current limiting part 2220 is respectively provided at both ends of the support body 21 along the first direction. One end of the first current limiting part 2220 is connected to the through hole structure 23, and the end of the first current limiting part 2220 away from the through hole structure 23 is used to be closely attached to the battery 1.

[0125] In at least one embodiment, the second protection structure 222 may include a first current limiting part 2220, and the first current limiting part 2220 is respectively provided at both ends of the bracket body 21 along the first direction. One end of the first current limiting part 2220 is connected to the through hole structure 23, and the bottom of the end of the first current limiting part 2220 away from the through hole structure 23 may be closely attached to the battery 1.

[0126] These two first current limiting parts 2220 can correspond vertically to the two battery 1 ends located at both ends in the first direction in the battery module.

[0127] The two first flow limiting sections 2220 can be connected to the flow channel structure 210.

[0128] Since the two first current limiting parts 2220 are respectively disposed at both ends of the bracket body 21 along the first direction, and the bottom of the first current limiting part 2220 away from the through hole structure 23 is connected to the battery 1, both first current limiting parts 2220 can be connected to the flow channel structure 210. Thus, in the case of heat spread in the battery 1, it can not only effectively reduce the possibility of hot air flow in the flow channel structure 210 and electrolyte spraying out from both ends of the flow channel structure 210 along the first direction to other battery modules, but also hinder the diffusion of electrolyte at the two ends of the battery cell along the first direction (i.e. the beginning and end of the battery module), and can accumulate electrolyte flowing out of the battery 1 at the beginning and end of the battery module to a certain extent.

[0129] In some embodiments, the end surface of the first flow-limiting portion 2220 away from the through-hole structure 23 may be vertically disposed; or, in combination with Figure 6 As shown, the first flow limiting part 2220 is inclined at one end surface away from the through hole structure 23.

[0130] In at least one embodiment, the shape of the end face of the first current limiting portion 2220 along the third direction can be trapezoidal. Specifically, the end face shape of the first current limiting portion 2220 along the third direction is trapezoidal. In other words, the end face shape of the first current limiting portion 2220 along the third direction is trapezoidal. Figure 6In the coordinate system, the cross-sectional shape of the XZ plane is trapezoidal. The surface of the first flow limiting part 2220 away from the through hole structure 23 can be inclined, and the bottom surface of the first flow limiting part 2220 away from the through hole structure 23 is in close contact with the battery 1. In other words, the first flow limiting part 2220 away from the through hole structure 23 is closed. At this time, the two first flow limiting parts 2220 are equivalent to increasing the length of the flow channel structure 210, and the first flow limiting part 2220 has a certain slope relative to the bracket body 21, which facilitates the air circulation in the flow channel structure 210. Furthermore, by increasing the flow and heat dissipation space of the electrolyte in the flow channel structure 210, the heat dissipation effect of the electrolyte in the flow channel structure 210 is improved. This also helps to prevent the air velocity from being too high at the moment of the explosion-proof valve 13 spraying, and ensures that the electrolyte sprayed on the batteries 1 at both ends along the first direction in the battery module can play a role in hindering the heat spread.

[0131] Figure 8 This is a partial schematic diagram of a support 2 according to some embodiments of this application.

[0132] In some embodiments, combined with Figure 8 As shown, the protection component 22 further includes a third protection structure 223, which includes a plurality of second current limiting parts 2230. The bracket body 21 is provided with the second current limiting parts 2230 between two adjacent through hole structures 23. The bracket body 21 is provided with a flow channel structure 210 on one side wall facing the battery 1. The second current limiting parts 2230 are located on the side of the bracket body 21 away from the flow channel structure 210.

[0133] In at least one embodiment, at least one second flow restrictor 2230 may be provided between every two adjacent through-hole structures 23. The second flow restrictor 2230 may be located on the side of the support body 21 away from the flow channel structure 210; in other words, the second flow restrictor 2230 and the flow channel structure 210 are located on opposite sides of the support body 21, such as the upper and lower sides.

[0134] During the operation of the battery module, if the internal and external air pressure of battery 1 is high after thermal runaway, the electrolyte may be ejected to a height higher than the through hole structure 23. However, due to gravity, it will fall into the through hole structure 23, or it may fall into the second flow limiting part 2230. At this time, the second flow limiting part 2230 can reduce the spread of electrolyte overflow and collect it, thereby reducing the spread phenomenon to a certain extent.

[0135] Figure 9 for Figure 8 A magnified structural diagram at point B in the middle.

[0136] In some embodiments, the second flow-limiting portion 2230 includes a first groove structure 2231.

[0137] The inner bottom wall of the first groove structure 2231 is a planar structure; or, combined with Figure 8 As shown, the portion between the two ends of the inner bottom wall of the first groove structure 2231 along the third direction is higher than the end of the first groove structure 2231 along the third direction, which is perpendicular to the first direction.

[0138] In at least one embodiment, the first groove structure 2231 is used to store the electrolyte, and the main structure of the second flow limiting part 2230 can be the first groove structure 2231. It can be understood that the support body 21 is recessed in the direction of the flow channel structure 210 between two adjacent through hole structures 23 to form the first groove structure 2231.

[0139] The inner bottom wall of the first groove structure 2231 refers to the inner wall of the first groove structure 2231 near the flow channel structure 210. The inner bottom wall of the first groove structure 2231 is a planar structure, meaning that the inner bottom wall of the first groove structure 2231 may have no bending parts and is a straight or flat plane.

[0140] Unlike the embodiments described above, in combination with Figure 8 As shown, the portion between the two ends of the inner bottom wall of the first groove structure 2231 along the third direction is higher than the end of the first groove structure 2231 along the third direction. This means that the positions of the two ends of the inner bottom wall of the first groove structure 2231 along the third direction are lower than the middle portion of the inner bottom wall of the first groove structure 2231. In other words, the inner bottom wall of the first groove structure 2231 may have two arc-shaped surfaces, or the middle portion of the inner bottom wall of the first groove structure 2231 protrudes upward.

[0141] During the operation of the battery module, after the cell experiences thermal runaway and the ejection valve, due to the large internal and external air pressure of the battery 1 and the flow channel structure 210, the electrolyte may be ejected to a height higher than the through hole. However, due to gravity, it will fall into the through hole structure 23, or it may fall into the second flow limiting part 2230. At this time, the two arc-shaped surfaces of the inner bottom wall of the first groove structure 2231 can serve as a collection tank, which can effectively collect the electrolyte falling into the second flow limiting part 2230, reduce the electrolyte overflow and spread, reduce the spread phenomenon to a certain extent, and facilitate the electrolyte to slide into the collection. Furthermore, since the electrolyte is a molten material, it can also effectively slow down the overflow speed of the electrolyte overflow tank and collect the ejected electrolyte more effectively.

[0142] In some embodiments, combined with Figure 8 As shown, the third protective structure 223 also includes a reinforcing rib 2232, which is disposed between two adjacent through-hole structures 23.

[0143] In at least one embodiment, the reinforcing rib 2232 may extend along a first direction or along a third direction; the reinforcing rib 2232 may be disposed on the inner bottom wall of the first groove structure 2231, and the two ends of the reinforcing rib 2232 may be connected to the opposite side walls of the first groove structure 2231. The number of reinforcing ribs 2232 in the first groove structure 2231 is at least one.

[0144] By providing reinforcing ribs 2232 between two adjacent through-hole structures 23, the mechanical strength between the two adjacent through-hole structures 23 can be effectively increased while ensuring the amount of electrolyte collected or the load-bearing capacity after spraying, thereby extending the service life of the entire support 2.

[0145] Figure 10 This is a partial schematic diagram of a support 2 according to some embodiments of this application.

[0146] In some embodiments, combined with Figure 10 As shown, the protection component 22 further includes a fourth protection structure 224, which includes a third current limiting part 2240. The support body 21 has a flow channel structure 210 on one side wall facing the battery 1. The support body 21 has the third current limiting part 2240 distributed on both sides of the flow channel structure 210 along a third direction on one side facing the battery 1. The third current limiting part 2240 extends along the first direction; the third direction is perpendicular to the first direction.

[0147] In at least one embodiment, the third current-limiting portion 2240 may be a rib structure, which is parallel to the extending direction of the flow channel structure 210, and thus the third current-limiting portion 2240 may extend along the first direction. Two of the aforementioned third current-limiting portions 2240 are provided on one side wall of the bracket body 21 facing the battery 1, such as the bottom wall, and are spaced apart along a third direction, and the two third current-limiting portions 2240 may be located on opposite sides of the flow channel structure 210.

[0148] By setting third flow-limiting parts 2240 on opposite sides of the bottom of the through-hole structure 23 and the flow channel structure 210, after the battery 1 runs out of control, the electrolyte melt (semi-solid and semi-liquid) that enters the flow channel structure 210 after being sprayed can play a certain role in the third direction (i.e., the longitudinal direction), so that the electrolyte that overflows later can be blocked by the electrolyte melt, thereby effectively reducing most of the electrolyte overflow. As time goes by, the melt solidifies and accumulates in the two third flow-limiting parts 2240, effectively blocking most of the electrolyte overflow in the third direction.

[0149] In some embodiments, combined with Figure 10As shown, the fourth protection structure 224 further includes a fourth current limiting part 2241. The bracket body 21 is provided with two fourth current limiting parts 2241 arranged at intervals along a third direction on the side facing the battery 1. The fourth current limiting part 2241 is spaced apart from the third current limiting part 2240, and the fourth current limiting part 2241 is located on the side of the third current limiting part 2240 away from the flow channel structure 210.

[0150] The fourth flow limiting part 2241 and the third flow limiting part 2240 form a buffer groove 2242 with the support body 21.

[0151] In at least one embodiment, the fourth current-limiting portion 2241 may also be a rib structure. The fourth current-limiting portion 2241 is parallel to the extending direction of the third current-limiting portion 2240 and the flow channel structure 210, so the fourth current-limiting portion 2241 can be extended along the first direction. Two of the fourth current-limiting portions 2241 are provided on one side wall of the bracket body 21 facing the battery 1, such as the bottom wall, and are spaced apart along a third direction.

[0152] A fourth flow-limiting part 2241 is also provided on the side of the third flow-limiting part 2240 away from the flow channel structure 210. The fourth flow-limiting part 2241 and the third flow-limiting part 2240 can reserve a buffer groove 2242 between themselves and the support body 21. Thus, the third flow-limiting part 2240 and the fourth flow-limiting part 2241 can improve the obstruction effect on the electrolyte melt (semi-solid and semi-liquid) entering the flow channel structure 210 after spraying in the third direction (i.e., the longitudinal direction). The buffer groove 2242 is equivalent to increasing the diffusion area of ​​the electrolyte, which helps the electrolyte entering the buffer groove 2242 to cool down quickly, and further improves the anti-spreading effect of the electrolyte.

[0153] Based on the above embodiments, a gap is provided between the third current limiting part 2240 and the battery 1, the gap is connected to the flow channel structure 210, the fourth current limiting part 2241 is used to fit in close contact with the battery 1, and the gap is connected to the buffer groove 2242.

[0154] Since the third current limiting part 2240 may have a gap with the top of the battery 1 during installation, a fourth current limiting part 2241 is also provided on the side of the third current limiting part 2240 away from the flow channel structure 210. This fourth current limiting part 2241 can block the electrolyte entering the buffer tank 2242 through the gap in the flow channel structure 210 in a third-dimensional direction. In other words, the design of the buffer tank 2242 is such that if the electrolyte overflows through the gap between the third current limiting part 2240 and the battery cell, since the electrolyte is molten, the fourth current limiting part 2241 will further limit the electrolyte from overflowing. The electrolyte is allowed to flow, thus stacking inside the buffer tank 2242 to form a semi-solid, semi-liquid substance. As the battery module operates normally, it forms a solid substance, thereby ensuring the steady state of normal battery module operation. Furthermore, the third current limiting part 2240 and the fourth current limiting part 2241 are arranged in parallel and spaced along the third direction, which can also increase the strength of the entire support 2 in the third direction (longitudinal) and the second direction (vertical). It can also effectively protect against the problem of electrolyte overflow on the surface after being sprayed from the battery 1, reducing the possibility of thermal runaway of the battery module.

[0155] Secondly, one or more embodiments of this application disclose a CCS device. A CCS device includes the support described in the above embodiments.

[0156] Figure 11 This is a second partial schematic diagram of a battery module according to some embodiments of this application.

[0157] In some embodiments, combined with Figure 11 As shown, the CCS device also includes a plurality of conductive connectors 3, which are spaced apart along the first direction. The conductive connectors 3 are used to electrically connect with the battery 1. The bracket 2 also includes a connecting structure, which is provided at the end of the bracket body 21 along a third direction. The conductive connectors 3 are connected to the connecting structure. The third direction is perpendicular to the first direction.

[0158] In at least one embodiment, the conductive connector 3 can be electrically connected to the battery 1 by welding. The connection structure can be disposed at the end of the bracket body 21 along a third direction, and on the same side of the bracket body 21, the conductive connectors 3, which are spaced apart along a first direction, can be connected to the connection structure by a snap-fit ​​method.

[0159] In the CCS device, the conductive connectors 3 at both ends of the first direction can be defined as the first connecting bus, and the conductive connectors 3 between the two ends of the first direction can be defined as the second connecting bus. One end of the first connecting bus is electrically connected to the battery 1 at the end of the battery module, and the other end of the first connecting bus can be electrically connected directly or through a conductive bus or wire to the battery 1 at the end of an adjacent battery module. The two ends of the second connecting bus are used to connect the positive terminal 11 and the negative terminal 12 of two adjacent batteries 1 in the battery module. The conductive connectors 3 can be copper busbars, aluminum busbars, etc.

[0160] Since the conductive connector 3 and the connecting structure can be connected by a snap-fit ​​method, the conductive connector 3 and the connecting structure are tightly fitted on the horizontal plane. When the conductive connector 3 is electrically connected to the positive terminal 11 or negative terminal 12 of the corresponding battery 1, the conductive connector 3, the battery 1 and the bracket 2 can form a whole. At this time, the bracket 2 and the conductive connector 3 are also a whole and tightly fitted, which can more effectively increase the protection effect of the third current limiting part 2240 and the fourth current limiting part 2241, and better reduce the situation of electrolyte spraying and overflow.

[0161] Figure 12 This is a partial schematic diagram of a battery module according to some embodiments of this application.

[0162] In some embodiments, combined with Figure 12 As shown, the bracket 2 also includes a wire threading structure 25. The wire threading structure 25 is provided on both sides of the through hole structure 23 along a third direction on the bracket body 21. The wire threading structure 25 is used to place the wire harness 4 that is electrically connected to the battery 1.

[0163] In at least one embodiment, the CCS device further includes a wiring harness 4, and the wiring structure 25 may be a groove structure, equivalent to the mounting slot of the wiring harness 4 in the battery module. Since each battery 1 has a positive terminal 11 and a negative terminal 12, and the bracket 2 is disposed between the positive terminal 11 and the negative terminal 12, two wiring structures 25 may be provided on the bracket body 21 for respectively placing or accommodating the wiring harness 4 electrically connected to the positive terminal 11 and the wiring harness 4 electrically connected to the negative terminal 12 of the battery 1.

[0164] The aforementioned wire harness 4 can be used as a wire for collecting temperature data of battery 1 or as a wire for collecting voltage data of battery 1, and no specific limitation is made here.

[0165] By providing a wire-passing structure 25 at the end of the bracket body 21 along a third direction, when the wire harness 4 is installed in the wire-passing structure 25, not only can the neatness of the wire harness 4 be ensured, but also the wire harness 4 can be insulated and supported, so as to play the role of a wire groove for insulating and protecting the wire harness 4.

[0166] Figure 13 This is one of the exploded schematic diagrams of a CCS device according to some embodiments of this application. Figure 16 This is a second exploded schematic diagram of a CCS device according to some embodiments of this application.

[0167] In some embodiments, combined with Figure 12 , Figure 13 and Figure 16 As shown, the connection structure includes multiple snap-fit ​​components 24, which are spaced apart on the threading structure 25 along the first direction, and each conductive connector 3 is snapped into each of the snap-fit ​​components 24.

[0168] In at least one embodiment, the connection structure at one end of the bracket body 21 along a third direction may include a plurality of snap-fit ​​components 24, the arrangement direction of the plurality of snap-fit ​​components 24 being the same as the arrangement direction of the conductive connectors 3; on the same side of the bracket body 21, the number and position of the snap-fit ​​components 24 may correspond to the number and position of the conductive connectors 3.

[0169] Since multiple snap-fit ​​components 24 are spaced apart on the threading structure 25 along the first direction, when multiple conductive connectors 3 are installed on the corresponding snap-fit ​​components 24, the multiple conductive connectors 3 are also spaced apart along the first direction. This ensures the convenience and stability of installing the conductive connectors 3, and makes the arrangement of the multiple conductive connectors 3 more neat. There will be no interference between adjacent conductive connectors 3, thereby improving the efficiency of installing and removing the conductive connectors 3 on the snap-fit ​​components 24.

[0170] Figure 14 This is one of the structural schematic diagrams of a CCS device according to some embodiments of this application. Figure 15 for Figure 13 A magnified structural diagram at point C. Figure 16 This is the second exploded schematic diagram of a CCS device according to some embodiments of this application. Figure 17 This is a second schematic diagram of the structure of a CCS device according to some embodiments of this application. Figure 18 for Figure 16 A magnified structural diagram at point D.

[0171] In some embodiments, combined with Figure 15 and Figure 18 As shown, the buckle assembly 24 includes a support plate 241 and a buckle member 243. The support plate 241 and the buckle member 243 are spaced apart on the side wall of the wire threading structure 25 away from the through hole structure 23. A portion of the conductive connector 3 is disposed on the support plate 241. The conductive connector 3 is provided with a slot 31, which engages with the buckle member 243.

[0172] In at least one embodiment, the support plate 241 can serve as a mounting base for the conductive connector 3 to be mounted on the bracket 2, and the length of the support plate 241 along the first direction can be greater than the length of the corresponding conductive connector 3. Part of the conductive connector 3 is mounted on the support plate 241, and the other part is electrically connected to the corresponding electrode post of the battery 1, such as the positive terminal 11 and the negative terminal 12.

[0173] A slot 31 can be provided on the conductive connector 3 to facilitate the engagement of the fastener 243 with the slot 31, enabling quick installation onto the support plate 241. The slot 31 can be a through hole penetrating the support plate 241 or a recess that does not penetrate the support plate 241. When the conductive connector 3 is installed on the support plate 241, the slot 31 of the conductive connector 3 engages with the fastener 243, thereby enabling rapid assembly of the conductive connector 3 and the bracket 2.

[0174] In some embodiments, combined with Figure 15 and Figure 18 As shown, the buckle assembly 24 further includes a first limiting member 242. Two first limiting members 242 are arranged at intervals along the first direction on the support plate 241, and the first limiting members 242 are located on one side of the conductive connector 3 along the first direction.

[0175] In at least one embodiment, the first limiting member 242 may be a protruding structure, plate-like structure, rod-like structure, block-like structure, etc., disposed on the support plate 241, and is not specifically limited herein. The snap-fit ​​assembly 24 may include two first limiting members 242. When the conductive connector 3 is installed on the support plate 241, the slot 31 of the conductive connector 3 engages with the snap-fit ​​member 243. At this time, the two first limiting members 242 are located on opposite sides of the conductive connector 3 along the first direction. At least one conductive connector 3 may be placed between the two first limiting members 242 in the snap-fit ​​assembly 24, so that the two first limiting members 242 can limit at least one conductive connector 3 in the first direction, thereby reducing the amount or possibility of displacement of the conductive connector 3 in the first direction.

[0176] In some embodiments, the support plate 241 has a notch 2410 between the two first limiting members 242.

[0177] Combination Figures 13 to 15 As shown, the latching member 243 and the support plate 241 are located on opposite sides of the conductive connector 3, and the latching member 243 corresponds to the notch 2410; or, combined with Figures 16 to 18As shown, the latching assembly 24 further includes a second limiting member 244, and the latching member 243 is located at the notch 2410. The second limiting member 244 and the latching member 243 are located on opposite sides of the conductive connector 3.

[0178] In at least one embodiment, since the requirement is to be compatible with conductive connectors 3 of different thicknesses, the support plate 241 provides a notch 2410 between the two first limiting members 242, so that the first limiting members 242 on both sides undergo elastic deformation at the moment when the conductive connector 3 is installed on the support plate 241 and the buckle 243 is engaged with the buckle groove 31, so as to reduce the possibility of plastic deformation and breakage of the buckle assembly 24.

[0179] Combination Figures 13 to 15 As shown, the structure of the snap-fit ​​assembly 24 and its snap-fit ​​connection with the conductive connector 3 are as follows: the snap-fit ​​243 is positioned above the notch 2410. When the conductive connector 3 is installed on the support plate 241, the support plate 241 supports the conductive connector 3 from below, while the snap-fit ​​243 snaps into the slot 31 of the conductive connector 3 from above. This allows the snap-fit ​​243 and the support plate 241 to cooperate in limiting the conductive connector 3 in the second direction (vertical). The two first limiting members 242 cooperate in limiting the conductive connector 3 in the first direction (lateral). The threading structure 25 cooperates with the snap-fit ​​243 to limit the conductive connector 3 in the third direction (longitudinal).

[0180] Unlike the aforementioned snap-fit ​​component 24, combined with Figures 16 to 18 As shown, the structure of the snap-fit ​​assembly 24 and the snap-fit ​​form with the conductive connector 3 are such that the snap-fit ​​member 243 is located at the notch 2410, and the second limiting member 244 can be located above the snap-fit ​​member 243. The second limiting member 244 can be a protruding structure, plate structure, rod structure, block structure, etc., provided on the side wall of the threading structure 25 away from the through hole structure 23. When the conductive connector 3 is installed on the support plate 241, the support plate 241 supports the conductive connector 3 from below. The buckle 243 engages with the buckle groove 31 of the conductive connector 3 from below, while the second limiting member 244 can be positioned above the conductive connector 3. This allows the buckle 243, the support plate 241, and the second limiting member 244 to cooperate with each other to limit the conductive connector 3 in the second direction (vertical). The two first limiting members 242 cooperate to limit the conductive connector 3 in the first direction (lateral). The threading structure 25 and the buckle 243 cooperate to limit the conductive connector 3 in the third direction (longitudinal).

[0181] Combination Figure 15 and Figure 18As shown, in some embodiments, the threading structure 25 includes a second groove structure 251 and a thread fixing part 252. The bottom of the second groove structure 251 is provided with a clearance hole 2510, and the inner sidewall of the threading structure 25 is provided with a plurality of thread fixing parts 252, at least some of the thread fixing parts 252 being located above the clearance hole 2510.

[0182] In at least one embodiment, an avoidance hole 2510 may be provided in the bottom wall of the second groove structure 251, and a plurality of wire fixing parts 252 may be provided in the inner side wall or the top of the inner wall of the wire threading structure 25. The wire fixing parts 252 may be rod-shaped structures, block-shaped structures, plate-shaped structures, strip-shaped structures, etc., extending in a third direction.

[0183] Because a clearance hole 2510 is provided in the bottom wall of the second groove structure 251, after the wire harness 4 is inserted into the channel of the wire threading structure 25, it can be joined together using tape or cable ties. Specifically, the tape or cable ties can pass through the clearance hole 2510 and be wrapped around the wire fixing part 252, thereby facilitating the joining and fixing of the wire harness 4 at the clearance hole 2510. Furthermore, since at least part of the wire fixing part 252 is located above the clearance hole 2510, the wire harness 4 can be fixed and limited in the second direction (vertical).

[0184] Thirdly, one or more embodiments of this application also disclose a battery module. (See reference...) Figure 1 and Figure 11 The battery module includes multiple batteries 1 and a CCS device as described in the above embodiments.

[0185] In at least one embodiment, a plurality of batteries 1 are arranged along a first direction to form a row of battery modules, and each battery module may include at least one row of battery modules. If the number of battery modules is two or more, the plurality of battery modules may be arranged along a third direction. A CCS device may be installed on the upper part of the battery modules.

[0186] The battery mentioned above may be the smallest battery unit in a battery module, or the battery may include multiple cells, without specific limitations.

[0187] The battery module in this embodiment has the same beneficial effects as the existing technology compared to the CCS device described above, and will not be repeated here.

[0188] Figure 19 This is a schematic diagram of the structure of a battery module according to some embodiments of this application.

[0189] In some embodiments, combined with Figure 19As shown, the battery module also includes an end plate 5 and a connecting strip 6. The end plates 5 are respectively provided at both ends of the plurality of batteries 1 along the first direction. The connecting strip 6 surrounds the plurality of batteries 1 and the end plates 5 and is used to fix the plurality of batteries 1 into an integral structure.

[0190] In at least one embodiment, a plurality of batteries 1 may be arranged along a first direction, and end plates 5 may be provided at both ends of the batteries 1 in the first direction. A battery module in which the plurality of batteries 1 and end plates 5 are fixed together by a connecting strap 6 wrapped around the plurality of batteries 1 and end plates 5.

[0191] The connecting strap 6 can be a connecting wire for bundling multiple batteries 1, or a strip-shaped connecting bandage such as a steel strap, without specific limitations; while the two end plates 5 not only limit and fix the multiple batteries 1 from both ends in the first direction, but also reduce the possibility of the connecting strap 6 damaging the batteries 1 during the tightening process, so as to play a certain role in isolating and protecting the batteries 1.

[0192] Figure 20 This is a partial structural schematic diagram of a battery module according to some embodiments of this application.

[0193] Combination Figure 20 As shown, the bracket 2 and end plate 5 can be connected in the following way: for example, a limiting hole 211 is opened at the end of the bracket body 21 along the first direction, and a fastener 7 is vertically inserted through the limiting hole 211 and the end plate 5 to achieve a fixed connection between the end of the bracket 2 and the end plate 5 in the first direction. The limiting hole 211 can be an open through hole, such as a U-shaped hole, or a closed through hole; no specific limitation is made here. The fastener 7 can be a bolt fastener 7.

[0194] A battery module may include at least one battery module, and a CCS device may include at least one support 2. For example, multiple batteries 1 are arranged along a first direction to form a battery module. If the number of battery modules along a third direction is one, the CCS device may include one support 2. Figure 1 and Figure 11 As shown; if the number of battery modules along the third direction is two, the CCS device may include two brackets 2, and the two brackets 2 may be an integrally formed structure, see Figure 20 As shown; it can also be a split structure.

[0195] Fourthly, one or more embodiments of this application also disclose a battery pack, including the CCS device as described above; or, including the battery module as described above.

[0196] The battery pack may include at least one battery module and a housing, and the battery module may be installed in the housing.

[0197] The beneficial effects of the battery pack in this embodiment compared to the prior art are the same as those of the CCS device or battery module described above, and will not be repeated here.

[0198] Fifthly, one or more embodiments of this application also disclose an electrical device, including the battery pack described above.

[0199] In at least one embodiment, the electrical equipment may be an electric vehicle, aircraft, energy storage cabinet, capacitor cabinet, etc., that requires DC power from a battery pack, without any specific limitation.

[0200] The beneficial effects of the electrical equipment in this embodiment compared to the prior art are the same as those of the battery pack described above, and will not be repeated here.

[0201] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A support, characterized in that, The bracket is used to be mounted on the battery of the battery module and is located between the positive and negative terminals of the battery; the bracket includes a bracket body and multiple through-hole structures, the multiple through-hole structures are distributed at intervals on the bracket body along a first direction corresponding to the arrangement direction of the multiple batteries, and the through-hole structures are used to correspond to and communicate with the position of the explosion-proof valve of the battery; The opening area at the end of the through-hole structure furthest from the battery is smaller than the opening area at the end of the through-hole structure closest to the battery. The through-hole structure protrudes and extends relative to the bracket body in a direction away from the battery; the bracket also includes a protective component disposed on at least one of the bracket body and the through-hole structure, the protective component being used to reduce the spread of electrolyte ejected from the battery through the explosion-proof valve out of the bracket. The protection component includes a second protection structure, which includes a first current-limiting part. A flow channel structure is provided on one side wall of the bracket body facing the battery. The first current-limiting parts are respectively provided at both ends of the bracket body along the first direction. One end of each first current-limiting part communicates with the through-hole structure, and the end of each first current-limiting part away from the through-hole structure is designed to be in close contact with the battery. Both first current-limiting parts communicate with the flow channel structure. The end of each first current-limiting part away from the through-hole structure is closed. The surface of the first flow-limiting part away from the through-hole structure is inclined.

2. The bracket according to claim 1, characterized in that, The protective component further includes a first protective structure, which includes a plurality of first oblique angle structures disposed on the circumferential inner wall of the through hole structure.

3. The bracket according to claim 2, characterized in that, The first protective structure further includes a first inner wall disposed within the through-hole structure. The first inner wall includes a first hole wall and a second hole wall. The first hole wall and the second hole wall are arranged along a second direction, and the inclination directions of the first hole wall and the second hole wall are opposite. The second direction refers to the direction along the through-hole structure from one end away from the battery to one end of the through-hole structure close to the battery. The second direction is perpendicular to the first direction.

4. The stent according to claim 3, characterized in that, The first inner wall also includes a first step, which is disposed at the connection between the first hole wall and the second hole wall.

5. The bracket according to claim 2, characterized in that, The first protective structure also includes a first inner wall disposed within the through-hole structure. The first inner wall includes a first hole wall, which is inclined from top to bottom toward the center of the through hole structure; or, the first inner wall includes a second hole wall, which is inclined from bottom to top toward the center of the through hole structure.

6. The bracket according to claim 3, characterized in that, The support body has a flow channel structure on the side facing the battery. The first inner wall also includes a third hole wall. The third hole wall is set at an angle to the inner wall of the flow channel structure along a third direction. The third direction is perpendicular to the first direction and the second direction, respectively.

7. The stent according to claim 6, characterized in that, The flow channel structure extends along the first direction, and the third hole wall and the second hole wall are respectively connected to the flow channel structure.

8. The bracket according to claim 6, characterized in that, In the third direction, the dimension of the end of the flow channel structure away from the battery is smaller than the dimension of the end of the flow channel structure closer to the battery.

9. The stent according to claim 2, characterized in that, The through-hole structure is a polygonal structure at the opening, and the first beveled structure is respectively provided at the four corners of the polygonal structure.

10. The stent according to claim 1, characterized in that, The bracket also includes a protection component, which includes a fourth protection structure and a third current limiting part. The bracket body has a flow channel structure on one side wall facing the battery. The bracket body has the third current limiting part distributed on both sides of the flow channel structure along a third direction on one side facing the battery. The third current limiting part extends along the first direction. The third direction is perpendicular to the first direction.

11. The stent according to claim 10, characterized in that, The fourth protection structure further includes a fourth current limiting part. The bracket body has two fourth current limiting parts arranged at intervals along a third direction on the side facing the battery. The fourth current limiting part is spaced apart from the third current limiting part, and the fourth current limiting part is located on the side of the third current limiting part away from the flow channel structure. The fourth and third flow-limiting parts form a buffer groove with the support body.

12. A CCS device, characterized in that, Including the stent as described in any one of claims 1 to 11.

13. The CCS device according to claim 12, characterized in that, It also includes a plurality of conductive connectors, which are spaced apart along a first direction and are used for electrical connection with the battery; the bracket also includes a connecting structure, which is provided at the end of the bracket body along a third direction, and the conductive connectors are connected to the connecting structure; the third direction is perpendicular to the first direction.

14. The CCS device according to claim 13, characterized in that, The connection structure includes multiple snap-fit ​​components, and each conductive connector is snapped into connection with each snap-fit ​​component.

15. The CCS device according to claim 14, characterized in that, The buckle assembly includes a support plate and a buckle member. A portion of the conductive connector is disposed on the support plate. The conductive connector has a slot, which engages with the buckle member.

16. A battery module, characterized in that, It includes multiple batteries and the CCS device as described in any one of claims 12 to 15.

17. The battery module according to claim 16, characterized in that, It also includes end plates and connecting strips. The end plates are respectively provided at both ends of the plurality of batteries along the first direction. The connecting strips are wrapped around the plurality of batteries and the end plates and are used to fix the plurality of batteries into an integral structure.

18. A battery pack, characterized in that, It includes the bracket as described in any one of claims 1 to 11; or, it includes the CCS device as described in any one of claims 12 to 15; or, it includes the battery module as described in claim 16 or 17.

19. An electrical appliance, characterized in that, Includes the battery pack as described in claim 18.

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