A thermal management component for a battery, a battery housing, and a battery.

Abstract

This utility model relates to the field of batteries, providing a thermal management component, a battery housing, and a battery. The thermal management component includes a heat exchange plate, a connecting component, and a metal elastic element. A cooling medium channel is provided inside the heat exchange plate. The connecting component has a busbar channel, which communicates with the cooling medium channel inside the heat exchange plate. The metal elastic element has only two ends, one end of which is electrically coupled to the connecting component, and the other end is configured to be electrically coupled to the battery housing. The elastic deformation direction of the metal elastic element includes at least one direction from the connecting component towards the battery housing. This arrangement ensures potential balance in the battery system, avoids discharge or localized corrosion, and achieves adaptive compression and dynamic stable electrical connection between the connecting component and the battery housing, facilitating installation and maintenance.

Description

Technical Field

[0001] This specification relates to the field of battery technology, and in particular to a thermal management component, battery housing, and battery for use in batteries. Background Technology

[0002] With the rapid development of new energy vehicles and energy storage systems, batteries have become the mainstream choice due to their high energy density and long cycle life. However, batteries generate a large amount of heat during charging and discharging. If this heat cannot be dissipated in time, it will cause the battery temperature to rise, leading to performance degradation, shortened lifespan, and even thermal runaway, posing safety hazards. Therefore, efficient and reliable thermal management components are crucial to the safety and stability of batteries.

[0003] Therefore, a thermal management component for a battery, a battery housing, and a battery are provided. Utility Model Content

[0004] This invention provides a thermal management component for a battery, including a heat exchange plate, a connecting assembly, and a metal elastic element. The heat exchange plate has a cooling medium channel inside. The connecting assembly has a confluence channel that communicates with the cooling medium channel inside the heat exchange plate. The metal elastic element has only two ends, one end of which is electrically coupled to the connecting assembly, and the other end is configured to be electrically coupled to the battery housing. The elastic deformation direction of the metal elastic element includes at least one direction from the connecting assembly towards the battery housing.

[0005] A stable conductive connection between the connecting components and the battery housing ensures potential balance in the battery system, preventing discharge or localized corrosion and guaranteeing safe and reliable operation. Metal elastic components enable adaptive compression and dynamic, stable electrical connection between the connecting components and the battery housing, facilitating installation and maintenance and adapting to various engineering requirements in different connection scenarios.

[0006] In some embodiments, the elastic deformation direction of the metal elastic element includes a direction from the second conductive coupling portion between the metal elastic element and the connecting assembly to the first conductive coupling portion between the metal elastic element and the battery housing. This arrangement ensures that the metal elastic element can provide a preload along the straight line of the two conductive coupling portions when compressed, improving the reliability of the conductive connection.

[0007] In some embodiments, the connecting assembly is provided with a positioning mating part, through which the metal elastic element is electrically coupled to the connecting assembly. The positioning mating part provides guidance and limitation for the metal elastic element during assembly, improving assembly accuracy and efficiency.

[0008] In some embodiments, the metal elastic element includes a metal folded spring sheet, which is a multi-layered structure formed by folding metal sheets. One end of the metal folded spring sheet, which is electrically coupled to the connecting component, is provided with an elastic locking portion. The positioning mating portion is a positioning groove, and the elastic locking portion engages with the positioning groove. This arrangement provides stable and sufficient elastic force, protecting the connecting component from mechanical damage. The locking mechanism enables mechanical interlocking, preventing loosening and allowing for quick, tool-free installation.

[0009] In some embodiments, the metal elastic element includes at least one of a metal folded spring, a helical spring, or a corrugated elastomer. Various structural designs of the metal elastic element can meet different needs and increase the applicability of the thermal management component.

[0010] In some embodiments, the surface of the metal elastic element has a surface treatment layer, the resistance of which is less than the resistance of the metal elastic element. This arrangement provides a low-impedance conductive path for current, improving the reliability of conductive coupling.

[0011] In some embodiments, the second conductive coupling portion of the metal elastic element and the connecting assembly is disposed in the peripheral region of the interface of the bus channel of the connecting assembly. This arrangement facilitates installation and reduces the impact on individual battery cells.

[0012] This utility model also provides a battery housing, including a housing body. At least one thermal management component is installed inside the housing body, and the housing body is provided with a conductive coupling area that cooperates with the metal elastic element of the thermal management component.

[0013] In some embodiments, the conductive coupling region includes a limiting structure. This arrangement effectively prevents the metal elastic element from loosening or displacing under vibration conditions, ensuring the long-term stability of the electrical connection.

[0014] This utility model also provides a battery, including any battery housing and multiple battery cells, wherein the multiple battery cells are disposed in the battery housing and are in thermal contact with the thermal management component. Attached Figure Description

[0015] This specification will be further described by way of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting; in these embodiments, the same reference numerals denote the same structures, wherein:

[0016] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this specification;

[0017] Figure 2This is an exploded structural diagram of a battery according to some embodiments of this specification;

[0018] Figure 3 This is a schematic diagram of the connection between the thermal management component and the battery housing according to some embodiments of this specification;

[0019] Figure 4 yes Figure 3 A cross-sectional schematic diagram showing the connection between the thermal management components and the battery housing;

[0020] Figure 5 This is a three-dimensional structural schematic diagram of the connecting components and metal elastic elements according to some embodiments of this specification;

[0021] Figure 6 This is a partially enlarged structural diagram of the connection between the connecting component and the battery box, as shown in some embodiments of this specification.

[0022] Figure 7 This is a partially enlarged structural diagram of the connection between the connecting component and the battery housing, as shown in other embodiments of this specification;

[0023] Figure 8 This is a front view of the connection assembly and battery housing connected by metal folding springs according to some embodiments of this specification;

[0024] Figure 9 This is a side view of the connection assembly and battery housing connected by metal folding springs according to some embodiments of this specification;

[0025] Figure 10 This is a front view of the connection assembly and battery housing connected by a helical spring according to some embodiments of this specification;

[0026] Figure 11 This is a side view of the connection assembly and battery housing connected by a helical spring according to some embodiments of this specification;

[0027] Figure 12 This is a front view of the connection assembly and battery housing connected by a corrugated elastomer according to some embodiments of this specification;

[0028] Figure 13 This is a side view of the connection assembly and battery housing connected by a corrugated elastomer according to some embodiments of this specification;

[0029] Figure 14 This is a schematic diagram showing the connection of the connecting components to the battery housing according to some embodiments of this specification.

[0030] Explanation of reference numerals in the attached drawings: 1000, vehicle; 100, battery; 200, controller; 300, motor; 10, battery housing; 101, first conductive coupling part; 102, limiting structure; 110, first part; 120, second part; 20, battery cell; 1, heat exchange plate; 2, connecting assembly; 21, busbar channel; 211, interface; 22, second conductive coupling part; 23, positioning mating part; 3, metal elastic element; 31, first end; 32, second end; 33, elastic snap-fit ​​part. Detailed Implementation

[0031] To more clearly illustrate the technical solutions of the embodiments in this specification, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this specification. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0032] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0033] 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.

[0034] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the conveying device, are merely illustrative and should not constitute any limitation on this application.

[0035] The battery-related technologies disclosed in the embodiments of this specification can be used, but are not limited to, in electrical devices such as vehicles, ships, or aircraft. For ease of explanation, the following embodiments use a vehicle 1000 as an example.

[0036] Figure 1This is a schematic diagram of the vehicle structure according to some embodiments of this specification. For example... Figure 1 As shown, vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery 100 is installed inside vehicle 1000, and the battery 100 can be located at the bottom, front, or rear of vehicle 1000. The battery 100 can be used to power vehicle 1000; for example, the battery 100 can serve as the operating power source for vehicle 1000. Vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to supply power to the motor 300, for example, to meet the power needs of vehicle 1000 during starting, navigation, and driving.

[0037] In some embodiments of this application, the battery 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0038] Figure 2 This is an exploded structural diagram of a battery according to some embodiments of this specification. Figure 2 As shown, the battery 100 includes a battery housing 10 and a plurality of battery cells 20, with the plurality of battery cells 20 disposed within the battery housing 10.

[0039] The battery housing 10 provides a receiving space for the battery cell 20. The battery housing 10 can adopt various structures. In some embodiments, the battery housing 10 may include a first portion 110 and a second portion 120, which overlap each other, together defining a receiving space for accommodating the battery cell 20. For example, the second portion 120 may be a hollow structure open at one end, and the first portion 110 may be a plate-like structure, with the first portion 110 covering the open side of the second portion 120 so that the first portion 110 and the second portion 120 together define the receiving space. As another example, the first portion 110 and the second portion 120 may both be hollow structures open on one side, with the open side of the first portion 110 covering the open side of the second portion 120. Further description of the battery housing follows.

[0040] In battery 100, there can be multiple battery cells 20, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 20 are connected in both series and parallel configurations. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed manner, and then the entire assembly of the multiple battery cells 20 is housed within battery housing 10. Alternatively, battery 100 can also be composed of multiple battery cells 20 first connected in series, parallel, or in a mixed manner to form battery modules, and then these battery modules are connected in series, parallel, or in a mixed manner to form a whole, which is also housed within battery housing 10. Battery 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 20.

[0041] In some embodiments, each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, etc. Batteries generate a large amount of heat during charging and discharging, making efficient and reliable thermal management components crucial for battery safety and stability. To improve heat exchange efficiency, thermal management components (such as heat exchange plates, connecting components, etc.) are mostly made of metal. When the voltage of a battery cell is high, a current may flow between the battery cell and the thermal management component (such as the heat exchange plate). A large current may break down the heat exchange plate, leading to coolant leakage, failure of the battery pack's insulation protection, and in severe cases, a safety accident. In some applications, the connecting components are pressed together with the battery housing using conductive foam to achieve equipotential bonding between the thermal management components and the battery housing. However, the foam is bulky, resulting in low system integration, large space occupation, and potential assembly gaps between it and the battery housing, which may lead to equipotential failure.

[0042] To address the aforementioned issues, some embodiments of this specification incorporate equipotential bonding springs between the thermal management component and the housing, achieving a stable and reliable equipotential connection between the two while simultaneously improving space utilization and optimizing the overall structure of the thermal management component.

[0043] Some embodiments of this specification provide a thermal management component for a battery.

[0044] Figure 3 This is a schematic diagram of the connection between the thermal management component and the battery housing 10 according to some embodiments of this specification. Figure 4 yes Figure 3 A cross-sectional schematic diagram of the connection between the thermal management component and the battery housing 10. Figure 5 This is a three-dimensional structural diagram of the connecting component 2 and the metal elastic element 3 according to some embodiments of this specification.

[0045] In some embodiments, such as Figures 3-5As shown, the thermal management assembly includes a heat exchange plate 1, a connecting assembly 2, and a metal elastic element 3. A cooling medium channel (not shown) is provided inside the heat exchange plate 1. The connecting assembly 2 is provided with a manifold 21, which communicates with the cooling medium channel inside the heat exchange plate 1. One end of the metal elastic element 3 is electrically coupled to the connecting assembly 2, and the other end is configured to be electrically coupled to the battery housing 10. The elastic deformation direction of the metal elastic element 3 includes at least one direction from the connecting assembly 2 towards the battery housing 10.

[0046] Thermal management components are components used to regulate battery temperature, enabling heat conduction and cooling.

[0047] The heat exchange plate 1 is used to transfer and absorb heat from the battery cells. The heat exchange plate 1 is made of a thermally conductive material, such as aluminum alloy, copper, etc. In some embodiments, the thermal management assembly exchanges heat with the battery cells through the heat exchange plate 1.

[0048] The cooling medium channel is a channel located inside the heat exchange plate 1, used to contain and guide the flow of the cooling medium.

[0049] The connecting assembly 2 is used to connect the manifold cooling pipe and the heat exchange plate 1, enabling the introduction and export of the cooling medium inside the heat exchange plate 1. In some embodiments, the heat exchange plate 1 and the connecting assembly 2 are made of metal to improve heat exchange efficiency and mechanical strength.

[0050] The manifold 21 is used to distribute the cooling medium flowing from the manifold cooling pipe into multiple cooling medium channels of the heat exchange plate 1 and to discharge the used cooling medium.

[0051] In some embodiments, the connecting component 2 and the heat exchange plate 1 can be connected by welding or other means, and the flow channel 21 of the connecting component 2 and the cooling medium channel inside the heat exchange plate 1 form a connected structure. In some embodiments, the connecting component 2 can be integrally formed with the heat exchange plate 1, and the interconnected flow channel 21 and cooling medium channel can be formed by machining.

[0052] The metal elastic element 3 refers to a component made of conductive metal that has the ability to elastically deform. For example, the metal elastomer can be made of materials such as iron, beryllium copper alloy, or stainless steel. In some embodiments, the metal elastic element 3 can be a spring, a sheet, or a reed. The metal elastic element 3 can be manufactured by stamping, laser cutting, or other methods.

[0053] In some embodiments, the shape and number of the metal elastic elements 3 can be set as needed. For example, the number of metal elastic elements on the same connecting component 2 can be increased (e.g., more than one) to achieve multi-point equipotential bonding.

[0054] Coupling refers to the interaction between two or more components in some way to achieve the transfer of energy, signals, or forces. This interaction can be physical, electrical, magnetic, or mechanical. Conductive coupling refers to the formation of a low-resistance path between two or more components through direct contact or a conductive medium (such as metal parts), allowing current to flow. In some embodiments, conductive coupling can also be understood as equipotential bonding.

[0055] In some embodiments, such as Figures 4-5 As shown, the metal elastic element 3 includes a first end 31 and a second end 32.

[0056] In some embodiments, the first end 31 of the metal elastic element 3 can be electrically coupled to the connecting assembly 2 in various ways. For example, the first end 31 of the metal elastic element 3 can be fixedly connected to the connecting assembly 2 by welding or conductive fasteners (such as screws, rivets). Another example is that the metal elastic element 3 and the connecting assembly 2 are integrally formed. The metal elastic element 3 and the connecting assembly 2 can also be detachably connected by snap-fits, pins, etc.

[0057] In some embodiments, the second end 32 of the metal elastic member 3 can be electrically coupled to the battery housing 10 in various ways. For example, the second end 32 of the metal elastic member 3 can press against or abut against the inner wall of the battery housing 10. Alternatively, the second end 32 of the metal elastic member 3 can be fixed to a pre-set grounding stud on the battery housing 10 using conductive fasteners (such as screws or rivets).

[0058] In some embodiments, conductive coupling can also be achieved through other feasible methods.

[0059] In some embodiments, the thermal management component may include multiple sets of heat exchange plates 1 and a connecting component 2. Figure 2 Only one set of heat exchange plates 1 and connecting components 2 are shown in the diagram. Adjacent connecting components are connected by a busbar cooling pipe. Each connecting component is electrically coupled to the battery housing via a metal elastic element.

[0060] In some embodiments, such as Figure 3 As shown, the connecting component 2 can be electrically coupled to the battery housing 10 via a metal elastic element 3. In some embodiments, the same connecting component 2 can be equipotentially connected / conductively coupled to the battery housing via multiple metal elastic elements 3.

[0061] The elastic deformation direction refers to the direction in which the metal elastic element 3 undergoes elastic deformation (such as compression) when subjected to an external force. In some embodiments, the elastic deformation direction includes at least one direction from the connecting assembly 2 toward the battery housing 10. For example, as... Figure 5As shown, the direction of elastic deformation may include a direction from the connecting component along the positive Z-axis to the battery housing (or the opposite direction). The direction of elastic deformation may also include a direction from the negative Z-axis of the connecting component to the battery housing (or the opposite direction). The direction of elastic deformation may also include other directions from the connecting component 2 to the battery housing 10.

[0062] In some embodiments, when the thermal management assembly is installed, the metal elastic element 3 is compressed and undergoes elastic deformation. After the thermal management assembly is assembled with the battery housing 10, the metal elastic element 3 is in a compressed state. The elastic force generated by the metal elastic element 3 ensures sufficient contact pressure between the metal elastic element 3 and the battery housing 10, thereby achieving good conductive coupling with the battery housing 10. The direction of the elastic force generated by the metal elastic element 3 is opposite to the direction of elastic deformation.

[0063] In some embodiments, the elastic travel of the metal elastic element 3 along the direction of elastic deformation is a preset range. The elastic travel refers to the range of movement of the metal elastic element 3 during elastic deformation. The preset range can be set according to requirements or experience. For example, the preset range can be 0-10 mm.

[0064] In some embodiments, such as Figures 4-5 As shown, the elastic deformation direction of the metal elastic member 3 includes the direction from the second conductive coupling portion 22 of the metal elastic member 3 and the connecting component 2 to the first conductive coupling portion 101 of the metal elastic member 3 and the battery box 10.

[0065] The second conductive coupling portion 22 of the connecting component 2 refers to the part where the connecting component 2 and the first end 31 of the metal elastic member 3 make physical contact. The first conductive coupling portion 101 of the battery case 10 refers to the part where the battery case 10 and the second end 32 of the metal elastic member 3 make physical contact. The first conductive coupling portion 101 of the battery case 10 can be any part of the inner wall of the battery case 10, and the specific position can be set according to requirements or experience. The conductive coupling portion can achieve equipotential connection. The conductive coupling portion is made of conductive material.

[0066] The direction from the second conductive coupling portion 22 between the metal elastic member 3 and the connecting assembly 2 to the first conductive coupling portion 101 between the metal elastic member 3 and the battery housing 10 can be understood as the direction of elastic deformation of the metal elastic member 3 being the same as the straight line direction connecting the second conductive coupling portion 22 and the first conductive coupling portion 101. For example, as... Figure 4 As shown, the dashed line d1 represents the straight line direction between the second conductive coupling part 22 connecting the metal elastic element 3 and the connecting assembly 2 and the first conductive coupling part 101 connecting the metal elastic element 3 and the battery box 10. The elastic deformation direction of the metal elastic element 3 can be the same as the d1 direction.

[0067] In some embodiments described in this specification, by clearly defining the elastic deformation direction of the metal elastic element 3, the metal elastic element can provide a preload force along the straight line of the two conductive coupling portions when under pressure, thereby improving the reliability of the electrical connection. Simultaneously, the directional deformation design facilitates installation and positioning, reduces the risk of metal fatigue, and extends the service life of the component.

[0068] In some embodiments of this specification, a metal elastic element 3 is provided to electrically couple the connecting component 2 to the metal elastic element 3. The elastic deformation mechanism of the metal elastic element 3 achieves adaptive pressing and dynamically stable electrical connection at the contact interface, ensuring the safe and reliable operation of the battery system. Simultaneously, the modular structure of the heat exchange plate 1, connecting component 2, and metal elastic element 3 facilitates installation and maintenance, and can adapt to the engineering requirements of various connection scenarios.

[0069] In some embodiments, the connecting component 2 is provided with a positioning mating part 23, and the metal elastic element 3 is electrically coupled to the connecting component 2 through the positioning mating part 23.

[0070] The positioning and fitting part 23 is used to limit and / or guide the metal elastic element 3.

[0071] In some embodiments, the positioning and mating part 23 may be configured as a groove. The shape of the groove matches the shape of the first end 31 of the metal elastic member 3. In some embodiments, the first end 31 of the metal elastic member 3 is a protrusion or claw structure that matches the groove. The first end 31 of the metal elastic member 3 is embedded in the groove through an interference fit, and the first end 31 of the metal elastic member 3 is in close contact with the inner wall of the groove, forming a conductive path and achieving conductive coupling. In some embodiments, a guide slope is provided at the edge of the groove to guide the first end 31 of the metal elastic member 3 into the groove.

[0072] Figure 6 This is a partially enlarged structural diagram of the connection point between the connecting component 2 and the battery housing 10, as shown in some embodiments of this specification. Figure 7 This is a partially enlarged structural diagram of the connection point between the connecting component 2 and the battery housing 10, as shown in other embodiments of this specification.

[0073] In some embodiments, such as Figure 6 As shown, the positioning and mating part 23 can be a straight groove. The first end 31 of the metal elastic member 3 is a straight protrusion or claw structure that matches the straight groove.

[0074] In some embodiments, such as Figure 7 As shown, the positioning and mating part 23 can be an arc-shaped groove. The first end 31 of the metal elastic member 3 is an arc-shaped protrusion or claw structure that matches the arc-shaped groove.

[0075] In some embodiments, the positioning mating part 23 may also be configured as a boss or a positioning post structure. The first end 31 of the metal elastic member 3 is provided with a matching positioning hole or notch at a corresponding position. During assembly, the positioning hole of the metal elastic member 3 is aligned with the boss of the connecting assembly 2 and inserted. Through the interference fit or clearance fit between the boss and the positioning hole, physical contact is formed between the outer surface of the boss and the inner wall of the positioning hole, thereby achieving conductive coupling.

[0076] In some embodiments, the positioning and mating part 23 may also be other feasible mechanical limiting structures 102.

[0077] In some embodiments of this specification, by providing a positioning and mating part 23 on the connecting component 2, guidance and restraint can be provided for the metal elastic element 3 during assembly, improving the accuracy and efficiency of assembly. Simultaneously, this structure can provide stable and reliable electrical contact, ensuring the reliability of the conductive coupling.

[0078] In some embodiments, the metal elastic element 3 includes at least one of the following: a metal folding spring, a helical spring, or a corrugated elastomer.

[0079] Figure 8 This is a front view of the connection assembly 2 and the battery housing 10 connected by a metal folding spring, according to some embodiments of this specification. Figure 9 This is a side view of the connection assembly 2 and the battery housing 10 connected by a metal folding spring, according to some embodiments of this specification.

[0080] In some embodiments, the metal elastic element 3 is a metal folded spring. The metal folded spring is a multi-layered structure made of thin metal sheets (such as stainless steel or beryllium copper) through processes such as stamping and bending. In some embodiments, the metal folded spring can be an N-shaped structure, an M-shaped structure, a W-shaped structure, or a combination of one or more of the aforementioned structures, such as... Figures 8-9 As shown in Figure 4. In some embodiments, the metal folding spring can be a serrated structure.

[0081] Figure 10 This is a front view of the connection assembly 2 and the battery housing 10 connected by a helical spring according to some embodiments of this specification. Figure 11 This is a side view of the connection assembly 2 and the battery housing 10 connected by a helical spring according to some embodiments of this specification.

[0082] In some embodiments, such as Figures 10-11 As shown, the metal elastic element 3 is a helical spring. In some embodiments, the ratio of the pitch to the wire diameter of the helical structure ranges from 5:1 to 10:1 to ensure uniform deformation and fatigue resistance. The pitch refers to the ratio of two adjacent turns of the helical structure along the axial direction of the helical structure (e.g., ...). Figure 10The distance (in the direction parallel to the Z-axis). Wire diameter refers to the diameter of the spring wire that makes up the spring structure.

[0083] Figure 12 This is a front view of the connection assembly 2 and the battery housing 10 connected by a corrugated elastomer according to some embodiments of this specification. Figure 13 This is a side view of the connection assembly 2 and the battery housing 10 connected by a corrugated elastomer according to some embodiments of this specification.

[0084] In some embodiments, such as Figures 12-13 As shown, the metal elastic element 3 is a corrugated elastomer. In some embodiments, the ratio of the wave height to the wavelength of the corrugated elastomer ranges from 1:3 to 1:5. Wave height refers to the vertical height of a single wave, i.e., the vertical distance between a wave crest and an adjacent wave trough (e.g.,...). Figure 13 In the context of wavelength (h), wavelength refers to the horizontal distance between two adjacent wave crests (or troughs). Figure 13 L in the middle.

[0085] In some embodiments described in this specification, the metal folded spring sheet has a simple structure, occupies little space, and has low cost; the spiral structure provides uniform stress distribution during repeated compression-release cycles, which can delay material fatigue, meet the durability requirements for long-term use, and is suitable for high-frequency vibration environments; the corrugated structure spring sheet, through an axially compressible buffer unit, can protect connecting components from impact damage under vibration conditions. Flexible design of the metal elastic element 3 into at least one of the above structures can increase the applicable scenarios for the thermal management component.

[0086] In some embodiments, the metal elastic element 3 includes a metal folded spring sheet, which is a multi-layered structure formed by folding metal sheets. For example... Figure 9 As shown, one end of the metal folding spring sheet that is electrically coupled to the connecting component 2 is provided with an elastic locking part 33. The positioning mating part 23 is a positioning groove, and the elastic locking part 33 is engaged with the positioning groove.

[0087] In some embodiments, the metal folding spring can be formed by folding a metal sheet in one step. For example, bending a rectangular metal sheet 180 degrees along its central axis forms a V-shaped or U-shaped spring with a double-layer structure. In some embodiments, the metal folding spring can be formed by folding a metal sheet multiple times. For example, folding a long metal sheet in alternating Z-shaped or W-shaped directions forms a compact three-layer spring (such as...). Figures 8-9 (as shown) or more layers (such as) Figure 4 The structure shown is as described. In some embodiments, the number of folds in the metal folding spring can be adjusted according to load requirements, and gaps are left between adjacent metal sheets to avoid frictional loss. In some embodiments, the double-layer structure at the first end of the metal folding spring can serve as an elastic snap-fit ​​portion 33.

[0088] For more information on the metal folding spring, please see the text above.

[0089] The elastic locking part 33 is used to lock the metal folding spring by cooperating with the positioning groove through its own elastic deformation. The elastic locking part 33 can be a protrusion or claw structure (such as a barb) on the end of the metal folding spring that is electrically coupled to the connecting component 2. The elastic locking part 33 matches the shape of the positioning groove, and the elastic locking part 33 and the positioning groove are interference fit. When assembling the thermal management component, one end of the metal folding spring is aligned with the positioning groove, and the elastic locking part 33 is compressed by the positioning groove, causing it to elastically deform, thereby allowing the elastic locking part 33 to enter the positioning groove. Under the action of elastic force, the elastic locking part 33 is locked in the positioning groove.

[0090] In some embodiments, the positioning groove can be a straight groove or an arc-shaped groove. For further explanation of straight grooves and arc-shaped grooves, see [link to relevant documentation]. Figures 6-7 .

[0091] In some embodiments of this specification, a multi-layered metal folding spring formed by folding metal sheets is used, with an elastic snap-fit ​​portion 33 at one end engaging with a positioning groove. This arrangement, through the alternating stacking and folding of multiple layers of metal sheets to form an elastic component, increases structural flexibility to adapt to more complex installation environments; simultaneously, the multi-layered structure provides stable and sufficient elasticity, ensuring durable, low-impedance electrical contact. The snap-fit ​​structure between the elastic snap-fit ​​portion 33 and the positioning groove enables rapid, tool-free installation, greatly simplifying the assembly process and improving production efficiency.

[0092] In some embodiments, the surface of the metal elastic element 3 has a surface treatment layer (not shown in the figure), and the resistance of the surface treatment layer is less than the resistance of the metal elastic element 3.

[0093] The surface treatment layer is one or more layers of film with specific functions on the surface of the metal elastic component 3 substrate.

[0094] In some embodiments, the conductivity of the surface treatment layer is greater than that of the metal elastic element 3. The material of the surface treatment layer can be gold, silver, etc.

[0095] In some embodiments, the surface treatment layer can be formed in a variety of ways. For example, the surface treatment layer can be formed by an electroplating process. Another example is that the surface treatment layer can be formed by electroless plating (such as electroless nickel plating), conductive coating spraying, etc. The surface treatment layer can also be made by other feasible methods, such as physical vapor deposition (PVD) processes.

[0096] In some embodiments of this specification, by providing a surface treatment layer with lower resistance on the surface of the metal elastic element 3, the contact resistance of the surface of the metal elastic element 3 is reduced, providing a low-impedance conductive path for current and improving the reliability of conductive coupling; at the same time, this arrangement can also improve the corrosion resistance of the metal elastic element 3, thereby enhancing the stability of the thermal management component.

[0097] In some embodiments, such as Figure 5 As shown, the second conductive coupling part 22 of the metal elastic element 3 and the connecting component 2 is disposed in the peripheral area of ​​the interface 211 of the bus channel 21 of the connecting component 2.

[0098] Interface 211 is used for docking or connecting the manifold 21 with other components (such as manifold cooling pipes).

[0099] The peripheral region of interface 211 refers to the area outside of interface 211 where the connecting component 2 is located. For example, the peripheral region can be within 1-2 cm outside the interface, allowing for a more compact design of the connecting component and reducing space occupation. In some embodiments, such as… Figure 5 As shown, the second conductive coupling portion 22 of the connecting component 2 is disposed around the outer wall of the interface 211.

[0100] In some embodiments of this specification, the second conductive coupling portion 22 of the metal elastic element 3 and the connecting component 2 is disposed in the peripheral area of ​​the interface 211, which helps to reduce the interference or influence of the metal elastic element on the battery cell.

[0101] In some embodiments, the heat exchange plate 1 and the connecting assembly 2 can be pre-assembled. Further, the metal elastic element 3 is aligned with the positioning mating part 23 on the connecting assembly 2; when pressure is applied to the metal elastic element 3, the first end 31 (e.g., the elastic snap-fit ​​part 33) of the metal elastic element 3 (e.g., a metal folding spring) contacts the positioning mating part 23 (e.g., a positioning groove) and gradually forms an interference fit or snap-fit ​​connection; after the first end 31 is installed, a pre-tightening torque is applied to the thermal management assembly, causing the second end 32 of the metal elastic element 3 to abut against the battery housing 10. The pre-tightening torque can be set according to experience or requirements. For example, the pre-tightening torque can be set to 5-15 N·m, causing the elastic element to generate 20%-30% initial compression, ensuring that the contact pressure between the metal elastic element 3 and the battery housing 10 is greater than a preset threshold. The preset threshold can be set according to requirements, for example, 10 N. The assembled thermal management assembly can achieve equipotential bonding with the battery housing.

[0102] Some embodiments of this specification provide a battery housing 10. In some embodiments, such as Figure 2As shown, the battery housing 10 includes a housing body, in which at least one thermal management component is installed, and the housing body is provided with a conductive coupling area that cooperates with the metal elastic element 3 of the thermal management component.

[0103] The main body of the battery box 10 refers to the main load-bearing part, which is used to install internal components such as battery modules and thermal management components.

[0104] In some embodiments, the conductive coupling region includes a limiting structure 102.

[0105] The limiting structure 102 is used to restrict the movement of the metal elastic element 3 on the conductive coupling area of ​​the battery housing 10. The limiting structure 102 can be configured in various ways, such as a groove, a mechanical stop, a sleeve, a hook, a buckle, etc.

[0106] In some embodiments, the conductive coupling region includes a first conductive coupling portion 101. See also: [link to documentation] for details on the first conductive coupling portion 101. Figure 4 And related explanations.

[0107] In some embodiments, such as Figures 10-11 As shown, the metal elastic element 3 is a helical spring, and the limiting structure 102 is a groove. After the thermal management assembly is assembled, the end of the helical spring is located in the groove and the helical spring is in a compressed state.

[0108] Figure 14 This is a schematic diagram illustrating the connection assembly 2 to the battery housing 10 according to some embodiments of this specification. In some embodiments, such as Figure 14 As shown, the limiting structure 102 is a hook disposed on the conductive coupling area of ​​the battery housing 10. The end of the metal elastic element 3 that is conductively coupled to the battery housing 10 is a hook that matches the limiting structure 102.

[0109] In some embodiments of this specification, by setting a limiting structure 102 in the conductive coupling area, the metal elastic element 3 is mechanically limited, which effectively prevents the metal elastic element 3 from loosening or displacing under vibration conditions, and ensures the long-term stability of the electrical connection.

[0110] Some embodiments of this specification provide a battery including a battery housing 10 and a plurality of battery cells 20. The plurality of battery cells are disposed within the battery housing 10, and the plurality of battery cells 20 are in thermal contact with a thermal management component.

[0111] Thermal contact is an energy exchange mechanism that transfers kinetic energy through the vibration of microscopic particles. When two objects at different temperatures come into thermal contact, the atoms of the higher-temperature object transfer energy to the lower-temperature object through vibrational collisions until the temperature reaches equilibrium. Thermal contact indicates that a heat transfer path is established between the battery cell 20 and the thermal management component, allowing the thermal management component to heat or cool the battery cell 20. For example, the thermal management component can directly contact the large surface of the battery cell 20 through the heat exchange plate 1. For further explanation of the thermal management component and the heat exchange plate 1, see [link to relevant documentation]. Figures 1-14 .

[0112] The embodiments of this utility model achieve at least the following technical effects: (1) The adaptive pressing and dynamic stable electrical connection of the contact interface are realized through the elastic deformation mechanism of the metal elastic element 3, ensuring the equipotential connection between the thermal management component and the battery box, avoiding discharge or local corrosion, and ensuring the reliability of the battery system to operate safely and reliably; (2) The modular structure of the heat exchange plate, the connecting component and the metal elastic element is conducive to installation and maintenance, and is suitable for engineering requirements of various connection scenarios; (3) The positioning mating part and the limiting structure can provide guidance and limiting for the metal elastic element 3 during assembly, improving the accuracy and efficiency of assembly.

[0113] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this specification. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this specification. Such modifications, improvements, and corrections are suggested in this specification and therefore remain within the spirit and scope of the exemplary embodiments described herein.

[0114] Finally, it should be understood that the embodiments described in this specification are merely illustrative of the principles of the embodiments described herein. Other variations may also fall within the scope of this specification. Therefore, alternative configurations of the embodiments described herein are intended to be illustrative rather than limiting, and should be considered consistent with the teachings of this specification. Accordingly, the embodiments described herein are not limited to those explicitly introduced and described herein.

Claims

1. A thermal management component for a battery, characterized in that, include: A heat exchange plate, wherein a cooling medium channel is provided inside the heat exchange plate; A connecting component is provided with a confluence channel, which is connected to the cooling medium channel inside the heat exchange plate; A metal elastic element having only two ends, one end of which is electrically coupled to the connecting assembly, and the other end is configured to be electrically coupled to the battery housing, wherein the elastic deformation direction of the metal elastic element includes at least one direction from the connecting assembly to the battery housing.

2. The thermal management component according to claim 1, characterized in that, The elastic deformation direction of the metal elastic element includes a direction from the second conductive coupling portion of the metal elastic element and the connecting assembly to the first conductive coupling portion of the metal elastic element and the battery housing.

3. The thermal management component according to claim 1, characterized in that, The connecting component is provided with a positioning mating part, and the metal elastic element is electrically coupled to the connecting component through the positioning mating part.

4. The thermal management component according to claim 3, characterized in that, The metal elastic element includes a metal folded spring sheet, which is a multi-layered structure formed by folding metal sheets. The end of the metal folded spring sheet that is electrically coupled to the connecting component is provided with an elastic snap-fit ​​part. The positioning and mating part is a positioning groove. The elastic snap-fit ​​part snaps into the positioning groove.

5. The thermal management component according to claim 1, characterized in that, The metal elastic element includes at least one of the following: a metal folded spring, a helical spring, or a corrugated elastomer.

6. The thermal management component according to any one of claims 1-5, characterized in that, The surface of the metal elastic element has a surface treatment layer, and the resistance of the surface treatment layer is less than the resistance of the metal elastic element.

7. The thermal management component according to any one of claims 1-5, characterized in that, The second conductive coupling portion of the metal elastic element and the connecting assembly is disposed in the peripheral area of ​​the interface of the bus channel of the connecting assembly.

8. A battery case, comprising a case body, characterized in that, At least one thermal management component as described in any one of claims 1-7 is installed inside the housing body, and the housing body is provided with a conductive coupling area that cooperates with the metal elastic element of the thermal management component.

9. The battery housing according to claim 8, characterized in that, The conductive coupling region includes a limiting structure.

10. A battery, characterized in that, include: The battery housing as described in any one of claims 8-9, and a plurality of battery cells; the plurality of battery cells are disposed within the battery housing and are in thermal contact with the thermal management component.

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