Battery and electric device

Abstract

The utility model provides a battery and a power utilization device, and belongs to the technical field of batteries. The battery comprises a plurality of battery monomers, a confluence component and a temperature sampling assembly. The bus member is electrically connected to the plurality of battery cells. The temperature sampling assembly comprises a temperature detection piece and a mounting frame, the temperature detection piece is configured to detect the temperature of the battery monomers, the mounting frame comprises a body part and a mounting part which are connected with each other, the temperature detection piece is arranged on the body part, the mounting part is connected to the confluence component, and the heat conductivity coefficient of the material of the mounting part is smaller than that of the material of the body part. The heat conductivity coefficient of the material of the mounting part is set to be smaller than that of the material of the body part, so that the phenomenon that the temperature on the confluence part is transmitted to the body part is relieved, and the influence of the temperature on the confluence part on the temperature detection part can be reduced; and the precision and the accuracy of the temperature detection piece for detecting the temperature of the single battery are improved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and more particularly, to a battery and an electrical device using the same. Background Art

[0002] In recent years, new energy vehicles have witnessed a leapfrog development. In the field of electric vehicles, power batteries, as the power source of electric vehicles, play an irreplaceable and important role. With the strong promotion of new energy vehicles, the demand for power battery products is also increasing day by day. Among them, as the core component of new energy vehicles, the battery has high requirements for both use stability and reliability.

[0003] In battery technology, in order to ensure the safety of battery cells, a temperature sampling component is generally provided inside the battery. Through the temperature sampling component, the temperature of the battery cells during use can be collected and monitored, so as to obtain the usage condition of the battery. However, the temperature sampling component in the existing battery is prone to inaccurate temperature collection during use, thus failing to effectively obtain the usage condition of the battery cells inside the battery, which is not conducive to improving the use stability and reliability of the battery. Summary of the Utility Model

[0004] The embodiments of the present application provide a battery and an electrical device using the same, which can effectively improve the use stability and reliability of the battery.

[0005] In a first aspect, the embodiments of the present application provide a battery, including a plurality of battery cells, a current collecting component, and a temperature sampling component; the current collecting component is electrically connected to the plurality of battery cells; the temperature sampling component includes a temperature detector and a mounting bracket, the temperature detector is configured to detect the temperature of the battery cells, the mounting bracket includes a body part and a mounting part connected to each other, the temperature detector is disposed on the body part, the mounting part is connected to the current collecting component, and the thermal conductivity of the material of the mounting part is less than the thermal conductivity of the material of the body part.

[0006] In the above technical solution, a temperature sampling component is installed on the busbar component of the battery. The temperature sampling component is provided with a mounting bracket and a temperature detector. The mounting bracket includes a body part and a mounting part that are connected to each other. By connecting the mounting part of the mounting bracket to the busbar component and arranging the temperature detector on the body part, the temperature detector of the temperature sampling component can be installed on the busbar component, so that the temperature detector of the temperature sampling component can detect the temperature of the battery cell, and the temperature information of the battery cell during use can be obtained. Among them, by setting the thermal conductivity of the material of the mounting part of the mounting bracket to be less than that of the material of the body part, the phenomenon that the temperature on the busbar component is transferred to the body part can be alleviated, so that the influence of the temperature on the busbar component on the temperature detector can be reduced, which is beneficial to improving the accuracy and precision of the temperature detector for detecting the temperature of the battery cell. Furthermore, the temperature sampling component can effectively obtain the usage condition of the battery cell inside the battery, so as to improve the usage stability and reliability of the battery.

[0007] In some embodiments, the body part is directly or indirectly abutted against the battery cell.

[0008] In the above technical solution, by setting the body part of the mounting bracket to be a structure that is directly or indirectly abutted against the battery cell, it is convenient for the temperature on the battery cell to be transferred to the body part, thereby being beneficial to improving the accuracy and precision of the temperature detector for detecting the temperature of the battery cell.

[0009] In some embodiments, a thermal conductive pad is arranged on the side of the body part facing the battery cell, and the thermal conductive pad is abutted against the battery cell.

[0010] In the above technical solution, by arranging a thermal conductive pad on the side of the body part facing the battery cell and the thermal conductive pad being abutted against the battery cell, the body part has a structure that is indirectly in contact with the battery cell through the thermal conductive pad. Thus, the temperature of the battery cell can be better transferred to the body part through the thermal conductive pad, and further, the accuracy and precision of the temperature detector for detecting the temperature of the battery cell can be improved.

[0011] In some embodiments, the battery cell includes a housing, an electrode assembly, and an electrode terminal. The electrode assembly is accommodated in the housing, the electrode terminal is arranged on the housing, the electrode terminal is electrically connected to the electrode assembly, and the electrode terminal is connected to the busbar component; wherein, the body part is directly or indirectly abutted against the housing.

[0012] In the above technical solution, the battery cell is provided with a housing, an electrode assembly accommodated in the housing, and electrode terminals provided on the housing. By directly or indirectly abutting the body portion against the housing of the battery cell, it is beneficial to reduce the difficulty of the mutual abutting and assembling between the body portion and the battery cell, and enable the temperature of the battery cell to be better transferred to the body portion, so that the temperature detection component can detect the temperature of the battery cell, which is beneficial to improving the accuracy and precision of the temperature detection component for detecting the temperature of the battery cell.

[0013] In some embodiments, the body portion and the mounting portion are integrally formed.

[0014] In the above technical solution, by setting the body portion and the mounting portion of the mounting bracket to an integrally formed structure, the connection reliability and stability between the body portion and the mounting portion of the mounting bracket can be improved, so as to improve the reliability of the temperature detection component assembled on the busbar component, and further reduce the phenomenon of the temperature detection component falling off or detaching during use, so as to improve the use stability and reliability of the battery.

[0015] In some embodiments, the body portion and the mounting portion are separately provided.

[0016] In the above technical solution, by setting the body portion and the mounting portion of the mounting bracket to a separately provided structure, it is convenient for the body portion and the mounting portion with different thermal conductivity coefficients to be connected and assembled with each other, which is beneficial to reducing the assembly difficulty of the body portion and the mounting portion of the mounting bracket.

[0017] In some embodiments, the body portion and the mounting portion are snap-connected.

[0018] In the above technical solution, by setting the body portion and the mounting portion to a snap-connected structure to achieve a detachable connection between the body portion and the mounting portion. On the one hand, it can reduce the assembly difficulty between the body portion and the mounting portion to improve the production efficiency of the mounting bracket. On the other hand, it is convenient for the subsequent rapid disassembly and maintenance of the body portion and the mounting portion, which is beneficial to reducing the later maintenance difficulty of the temperature sampling component, and can replace the body portion or the mounting portion with different structures or different materials according to different usage situations and usage scenarios, which is beneficial to improving the applicable range of the temperature sampling component.

[0019] In some embodiments, one of the body portion and the mounting portion is provided with a first card slot, and the other is provided with a buckle, and the buckle is in snap-fit with the first card slot.

[0020] In the above technical solution, by providing a first card slot on one of the body portion and the mounting portion and a buckle on the other, the snap connection between the body portion and the mounting portion can be achieved through the mutual snap-fit between the buckle and the first card slot, with a simple structure and easy to implement.

[0021] In some embodiments, the body part and the mounting part are arranged along a first direction. On one side of the mounting part facing the body part along the first direction, two clips are protruded. The two clips are arranged at intervals along a third direction perpendicular to the first direction. On both surfaces of the body part along the third direction, first clamping grooves are provided, and each first clamping groove is in clamping fit with one clip.

[0022] In the above technical solution, by protruding two clips on one side of the mounting part facing the body part along the first direction, and the two clips are arranged at intervals along the third direction. Correspondingly, first clamping grooves are provided on both surfaces of the body part along the third direction, and each first clamping groove is for one clip to be inserted. The mounting bracket with this structure can enable a part of the body part to be clamped between the two clips in the third direction, so that while the two clips are respectively clamped with the two first clamping grooves, they can also cooperate to clamp the body part, thereby further improving the firmness of the mutual clamping between the body part and the mounting part, and improving the structural stability and reliability of the mounting bracket.

[0023] In some embodiments, the thermal conductivity of the material of the body part is λ 1 , satisfying 1.8 W / (m·K) ≤ λ 1 ≤ 2.5 W / (m·K).

[0024] In the above technical solution, by setting the thermal conductivity of the material of the body part to be from 1.8 W / (m·K) to 2.5 W / (m·K), the body part has better thermal conductivity, so that the temperature detection component arranged on the body part can better obtain the temperature of the battery cell, which is beneficial to further improving the accuracy and precision of the temperature detection component for detecting the temperature of the battery cell.

[0025] In some embodiments, the thermal conductivity of the material of the mounting part is λ 2 , satisfying 0.15 W / (m·K) ≤ λ 2 ≤ 0.25 W / (m·K).

[0026] In the above technical solution, by setting the thermal conductivity of the material of the mounting part to be from 0.15 W / (m·K) to 0.25 W / (m·K), the thermal conductivity of the mounting part is reduced, so that the temperature detection component arranged on the body part can better obtain the temperature of the battery cell, further alleviating the phenomenon that the temperature on the busbar component is transmitted to the body part, which is beneficial to further reducing the influence of the temperature on the busbar component on the temperature detection component, and further improving the accuracy and precision of the temperature detection component for detecting the temperature of the battery cell.

[0027] In some embodiments, an installation cavity with an opening is formed inside the body part, and the temperature detection element is accommodated in the installation cavity.

[0028] In the above technical solution, by providing an installation cavity with an opening inside the body part and accommodating the temperature detection element in the installation cavity, on the one hand, the temperature sampling component with this structure can also play a certain protective role for the temperature detection element through the body part to reduce the phenomenon of the temperature detection element being knocked or damaged during use, and can reduce the assembly difficulty between the temperature detection element and the body part. On the other hand, it can also reduce the influence of other components on the temperature detection element, which is beneficial to improving the accuracy and precision of the temperature detection element for detecting the temperature of the battery cell.

[0029] In some embodiments, the temperature sampling component further includes a sealant, the sealant is filled in the installation cavity, and the sealant coats the temperature detection element.

[0030] In the above technical solution, the installation cavity of the body part is also filled with a sealant, and the temperature detection element is coated with the sealant. On the one hand, it can improve the stability and reliability of the temperature detection element installed in the installation cavity, and can further stabilize the temperature detection element to relieve the phenomenon of the temperature detection element shaking or being knocked in the installation cavity. On the other hand, it can also seal the temperature detection element to reduce the phenomenon of the temperature detection element being damaged after being affected by moisture, thus being beneficial to improving the service life of the temperature detection element.

[0031] In some embodiments, the temperature sampling component further includes a connecting wire, one end of the connecting wire extends into the installation cavity and is connected to the temperature detection element, and the other end is located outside the installation cavity and is used for electrical connection with the battery management system.

[0032] In the above technical solution, the temperature sampling component is also provided with a connecting wire, and one end of the connecting wire extends into the installation cavity and is connected to the temperature detection element, and the other end is located outside the installation cavity and is used for electrical connection with the battery management system to reduce the difficulty of electrical connection between the temperature detection element and the battery management system, and can first assemble the connecting wire with the temperature detection element and then assemble it into the battery for electrical connection with the battery management system through the connecting wire, which is beneficial to optimizing the production rhythm of the battery to improve the production efficiency of the battery.

[0033] In some embodiments, the body part and the installation part are arranged along a first direction, and the installation cavity is formed with the opening at at least one end of the body part along a second direction, and the second direction is perpendicular to the first direction.

[0034] In the above technical solution, the main body part and the installation part of the mounting bracket are arranged in a structure arranged along the first direction, and the opening of the installation cavity is formed at one end of the main body part in the second direction, so as to reduce the interference effect between the opening for assembling the temperature detection component on the main body part and the installation part, thereby facilitating the assembly of the temperature detection component into the installation cavity and facilitating the connection of the installation part to the busbar component.

[0035] In some embodiments, the installation cavity penetrates through both ends of the main body part along the second direction, so that openings are formed at both ends of the main body part in the second direction.

[0036] In the above technical solution, by setting the installation cavity to a structure that penetrates through both ends of the main body part along the second direction, the installation cavity can form openings at both ends of the main body part along the second direction. On the one hand, it is convenient to machine the installation cavity inside the main body part, which is beneficial to reducing the manufacturing difficulty of the installation cavity of the main body part. On the other hand, it is convenient to assemble the temperature detection component into the installation cavity, which is beneficial to further reducing the assembly difficulty between the temperature detection component and the main body part.

[0037] In some embodiments, the main body part is spaced apart from the busbar component.

[0038] In the above technical solution, by spacing the main body part and the busbar component from each other, the main body part installed with the temperature detection component is not in direct contact with the busbar component, so as to relieve the phenomenon that the temperature on the busbar component is directly transmitted to the main body part, thereby reducing the influence of the temperature on the busbar component on the temperature detection component and being beneficial to improving the accuracy and precision of the temperature detection component for detecting the temperature of the battery cell.

[0039] In some embodiments, the installation part is snap-connected to the busbar component.

[0040] In the above technical solution, by setting the installation part of the mounting bracket to a structure that is snap-connected to the busbar component, on the one hand, it can reduce the assembly difficulty between the installation part of the mounting bracket and the busbar component, without introducing other relatively complex structures or components to realize the assembly between the installation part of the mounting bracket and the busbar component, which is beneficial to improving the assembly efficiency between the temperature sampling component and the busbar component. On the other hand, it can realize the detachable connection between the installation part of the mounting bracket and the busbar component, thereby facilitating the maintenance or replacement of the temperature sampling component during the later use process and being beneficial to reducing the later maintenance difficulty and maintenance cost of the temperature sampling component.

[0041] In some embodiments, the installation part is provided with a second card slot, and a part of the busbar component is stuck in the second card slot.

[0042] In the above technical solution, a second slot is provided on the mounting portion of the mounting frame, and part of the confluence component is clamped in the second slot to achieve clamping assembly between the mounting portion of the mounting frame and the confluence component, which has a simple structure and is easy to assemble.

[0043] In some embodiments, the main body and the mounting portion are arranged along a first direction, and the second card groove is provided on the surface of the mounting portion on the side away from the main body in the first direction, and the second card groove passes through both ends of the mounting portion along the second direction, and the second direction is perpendicular to the first direction.

[0044] In the above technical solution, by arranging the second card slot on the surface of the mounting part on the side away from the main body part in the first direction, and the second card slot passes through both ends of the mounting part along the second direction, on the one hand, the difficulty of processing and forming the second card slot on the mounting part can be reduced, so as to reduce the difficulty of manufacturing the mounting frame; on the other hand, the difficulty of partially locking the convergence component in the second card slot can be further reduced, so as to reduce the difficulty of assembling between the convergence component and the mounting part of the mounting frame, thereby effectively improving the production efficiency of the battery.

[0045] In some embodiments, a notch is provided at one end of the convergence component in the second direction, and the notch passes through both sides of the convergence component along the third direction. The mounting frame is inserted into the notch along the second direction, and part of the convergence component is clamped in the second clamping groove, and the first direction, the second direction and the third direction are perpendicular to each other.

[0046] In the above technical solution, a notch is provided at one end of the convergence component in the second direction, and the notch is a structure that penetrates both sides of the convergence component in the third direction, so that when the mounting frame is inserted into the notch of the convergence component along the second direction, part of the convergence component can also be clamped in the second card slot of the mounting portion, that is, it can be realized that part of the convergence component is a structure that is inserted into the second card slot from one end of the second card slot in the second direction. A battery adopting such a structure can improve the reliability and stability of the mounting frame of the temperature sampling component assembled to the convergence component, and the notch of the convergence component can also play a certain positioning and limiting role on the mounting frame of the temperature sampling component, which is beneficial to improving the assembly quality of the mounting frame of the temperature sampling component and the convergence component.

[0047] In some embodiments, the mounting frame includes two mounting portions, the two mounting portions are respectively connected to two sides of the main body portion in the first direction, and the second card slot is provided on the surface of the two mounting portions on the side away from the main body portion in the first direction.

[0048] In the above technical solution, mounting parts are connected to both sides of the body part along the first direction, and second clamping grooves are provided on the sides of the two mounting parts facing away from the body part in the first direction, so that the two opposite sides of the busbar component at the notch along the first direction can be respectively clamped in the two second clamping grooves of the two mounting parts, thereby further improving the reliability and stability of the mounting bracket of the temperature sampling component assembled on the busbar component, which is conducive to further improving the assembly quality of the mounting bracket of the temperature sampling component and the busbar component.

[0049] In some embodiments, along the second direction, the body part and the busbar component are arranged at intervals.

[0050] In the above technical solution, by arranging the body part and the busbar component at intervals in the second direction, the two sides of the body part in the first direction can be indirectly mounted to the busbar component through two mounting parts respectively, and the body part is not in direct contact with the busbar component in the second direction either. Therefore, while improving the assembly stability of the mounting bracket and the busbar component, the phenomenon that the temperature on the busbar component is directly transmitted to the body part can be alleviated, thereby reducing the influence of the temperature on the busbar component on the temperature detection part.

[0051] In some embodiments, the second clamping groove has two relatively arranged groove side surfaces in the third direction, and at least one of the groove side surfaces is convexly provided with a pressing part; wherein, along the third direction, the pressing part is located on one side of the busbar component, and the pressing part presses on the part of the busbar component clamped in the second clamping groove.

[0052] In the above technical solution, by convexly providing a pressing part on at least one groove side surface of the second clamping groove, and the pressing part presses on one side of the busbar component in the third direction along the third direction, a structure in which the part of the busbar component clamped in the second clamping groove and the mounting part are in interference fit can be realized, which is further conducive to improving the firmness of the busbar component clamped in the second clamping groove of the mounting part, so as to further improve the stability of the mounting bracket of the temperature sampling component assembled on the busbar component.

[0053] In some embodiments, the pressing parts are convexly provided on both of the two groove side surfaces.

[0054] In the above technical solution, by providing pressing parts on both of the two groove side surfaces of the second clamping groove, the two sides of the part of the busbar component clamped in the second clamping groove in the third direction can be pressed on the pressing parts, which is conducive to further improving the firmness of the busbar component clamped in the second clamping groove of the mounting part.

[0055] In some embodiments, the second card slot further has a slot bottom surface, the slot bottom surface connects the two slot side surfaces, the slot bottom surface is convexly provided with a support portion, the support portion is located within the notch, and the support portion is configured to separate the bus bar component from the slot bottom surface along the first direction.

[0056] In the above technical solution, by convexly providing a support portion on the slot bottom surface of the second card slot and the support portion being located within the notch of the bus bar component, the support portion can support between the part of the bus bar component clamped in the second card slot and the slot bottom surface of the second card slot, so that the part of the bus bar component clamped in the second card slot and the slot bottom surface of the second card slot can be spaced apart from each other, thereby reducing the temperature transmitted from the bus bar component to the mounting portion, and further reducing the influence of the temperature on the bus bar component on the temperature detection component, which is beneficial to improving the accuracy and precision of the temperature detection component for detecting the temperature of the battery cell.

[0057] In some embodiments, the pressing portion has a pressing surface pressing against the bus bar component in the third direction; wherein, the pressing portion further has two guiding inclined surfaces, the two guiding inclined surfaces are respectively located on both sides of the pressing surface in the second direction, and the guiding inclined surfaces connect the pressing surface and the slot side surface.

[0058] In the above technical solution, the pressing portion has a pressing surface pressing against the bus bar component in the third direction, and the pressing portion is further provided with guiding inclined surfaces respectively located on both sides of the pressing surface in the second direction, so that the guiding inclined surfaces can connect the pressing surface and the slot side surface of the second card slot, thereby playing a guiding role in the bus bar component during the process of the bus bar component being inserted into the second card slot along the second direction through the guiding inclined surfaces, so as to guide the bus bar component to the position where it presses against the pressing surface by the guiding inclined surfaces, and further alleviating the phenomenon that the pressing portion and the bus bar component are stuck to each other, which is beneficial to reducing the difficulty of the pressing portion pressing against the bus bar component, so as to reduce the assembly difficulty between the bus bar component and the mounting portion of the mounting bracket.

[0059] In some embodiments, the second card slot has a slot bottom surface, the slot bottom surface is convexly provided with a pressing portion, the pressing portion is located within the notch, and the pressing portion presses against the part of the bus bar component clamped in the second card slot along the first direction.

[0060] In the above technical solution, by convexly providing a pressing portion on the slot bottom surface of the second card slot and the pressing portion pressing against the part of the bus bar component clamped in the second card slot along the first direction, a structure with an interference fit can be achieved between the part of the bus bar component clamped in the second card slot and the mounting portion, which is further beneficial to further improving the firmness of the bus bar component clamped in the second card slot of the mounting portion, so as to further improve the stability of the mounting bracket of the temperature sampling assembly assembled to the bus bar component.

[0061] In a second aspect, an embodiment of the present application further provides an electrical device, including the above battery, and the battery is used to provide electrical energy. Description of the Drawings

[0062] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as a limitation of the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0063] Figure 1 Structural schematic diagram of a vehicle provided by some embodiments of the present application;

[0064] Figure 2 Exploded view of the structure of a battery provided by some embodiments of the present application;

[0065] Figure 3 Assembly schematic diagram of a battery cell group and a sampling assembly provided by some embodiments of the present application;

[0066] Figure 4 Assembly schematic diagram of a battery cell and a busbar component provided by some embodiments of the present application;

[0067] Figure 5 Partial structural schematic diagram of a battery provided by some embodiments of the present application;

[0068] Figure 6 Exploded view of the structure of a temperature sampling component provided by some embodiments of the present application;

[0069] Figure 7 Structural schematic diagram of a mounting bracket of a temperature sampling component provided by some embodiments of the present application;

[0070] Figure 8 Front view of the mounting bracket of the temperature sampling component in the second direction provided by some embodiments of the present application;

[0071] Figure 9 Structural schematic diagram of a mounting bracket of a temperature sampling component provided by some other embodiments of the present application;

[0072] Figure 10 Exploded view of the structure of a mounting bracket of a temperature sampling component provided by some other embodiments of the present application;

[0073] Figure 11 Structural schematic diagram of a busbar component provided by some embodiments of the present application;

[0074] Figure 12 For Figure 7 Partial enlarged view of location A of the shown mounting bracket;

[0075] Figure 13 The front view in the second direction of the mounting bracket of the temperature sampling component provided for some other embodiments of the present application.

[0076] Icons: 1000 - vehicle; 100 - battery; 10 - box body; 11 - first box body; 12 - second box body; 20 - battery cell group; 21 - battery cell; 211 - electrode terminal; 212 - housing; 22 - bus bar component; 221 - notch; 30 - sampling assembly; 31 - wire harness assembly; 32 - temperature sampling component; 321 - temperature detector; 322 - mounting bracket; 3221 - body part; 3221a - first card slot; 3221b - opening; 3221c - mounting cavity; 3222 - mounting part; 3222a - buckle; 3222b - second card slot; 3222c - slot side; 3222d - slot bottom surface; 3223 - heat conducting pad; 3224 - pressing part; 3224a - pressing surface; 3224b - guiding inclined surface; 3225 - supporting part; 323 - sealant; 324 - connecting wire; 40 - insulating part; 200 - controller; 300 - motor; X - first direction; Y - second direction; Z - third direction. Detailed implementation manners

[0077] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0078] Unless otherwise defined, all technical and scientific terms used in the present application have the same meanings as those commonly understood by those skilled in the technical field to which the present application belongs; the terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above drawings are intended to cover non - exclusive inclusion. The terms "first", "second", etc. in the specification and claims of the present application or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary - secondary relationship.

[0079] Referring to "embodiments" in the present application means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0080] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "linked", and "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0081] The term "and / or" in the present application is merely a description of the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the associated objects before and after.

[0082] In the embodiments of the present application, the same reference numerals represent the same components. And for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width, etc. of the integrated device are only for illustrative purposes and should not constitute any limitation to the present application.

[0083] The term "a plurality of" as used in the present application refers to two or more (including two).

[0084] In the embodiments of the present application, the battery cell can be a secondary battery, which refers to a battery cell that can continue to be used by activating the active material through charging after the battery cell discharges.

[0085] The battery cell can be a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium-metal battery, a sodium-metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of the present application are not limited thereto.

[0086] The battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and extracted back and forth between the positive electrode and the negative electrode. The separator is disposed between the positive electrode and the negative electrode, which can prevent the short circuit between the positive and negative electrodes and at the same time allow the active ions to pass through.

[0087] In some embodiments, the electrode assembly is a wound structure. The positive electrode sheet and the negative electrode sheet are wound into a wound structure.

[0088] In some embodiments, the electrode assembly is a stacked structure.

[0089] In some embodiments, the shape of the electrode assembly can be cylindrical, flat, or multi-prismatic, etc.

[0090] In some embodiments, the electrode assembly is provided with tabs, which can conduct current out of the electrode assembly. The tabs include a positive tab and a negative tab.

[0091] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film, etc.

[0092] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. The prismatic battery cell includes, but is not limited to, a square shell battery cell, a blade-shaped battery cell, a multi-prismatic battery, and the multi-prismatic battery is, for example, a hexagonal prism battery, etc.

[0093] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity.

[0094] In some embodiments, the battery can be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0095] In some embodiments, the battery can be a battery pack. The battery pack includes a box body and battery cells, and the battery cells or battery modules are accommodated in the box body.

[0096] In some embodiments, the box body can be part of the chassis structure of a vehicle. For example, part of the box body can become at least part of the floor of the vehicle, or part of the box body can become at least part of the cross beam and longitudinal beam of the vehicle.

[0097] In some embodiments, the battery can be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0098] The battery has outstanding advantages such as high energy density, low environmental pollution, high power density, long service life, wide adaptability, and small self-discharge coefficient, and is an important part of the development of new energy today. The development of battery technology needs to consider various design factors at the same time. For example, performance parameters such as energy density, cycle life, discharge capacity, charge and discharge rate, etc. In addition, the safety of the battery also needs to be considered.

[0099] For a general battery, the battery includes a box body and a plurality of battery cells disposed within the box body. The plurality of battery cells are electrically connected through a busbar component to achieve series or parallel connection between the plurality of battery cells. In the related art, in order to ensure the safety of the battery cells, a temperature sampling component is generally disposed within the battery. Through the temperature sampling component, the temperature of the battery cells during use can be collected and monitored, so as to obtain the usage condition of the battery. Among them, the temperature sampling component generally includes a temperature sensor and a mounting bracket for assembling the temperature sensor. The mounting bracket is usually mounted on the busbar component of the battery, and the mounting bracket is in contact with the battery cells, so that the temperature sensor accommodated within the mounting bracket can detect the temperature of the battery cells. However, during the use of this structure of battery, since the temperature on the busbar component is also transmitted to the temperature sensor through the mounting bracket, the result of the temperature sensor detecting the temperature of the battery cells is inaccurate, thus effectively obtaining the usage condition of the battery cells inside the battery, which is not conducive to improving the usage stability and reliability of the battery.

[0100] Based on the above considerations, in order to solve the problem of low usage stability and reliability of the battery, an embodiment of the present application provides a battery. The battery includes a plurality of battery cells, a busbar component, and a temperature sampling component. The busbar component electrically connects the plurality of battery cells. The temperature sampling component includes a temperature detection member and a mounting bracket. The temperature detection member is configured to detect the temperature of the battery cells. The mounting bracket includes a main body portion and a mounting portion connected to each other. The temperature detection member is disposed on the main body portion, and the mounting portion is connected to the busbar component. The thermal conductivity of the material of the mounting portion is less than the thermal conductivity of the material of the main body portion.

[0101] In this structure of battery, a temperature sampling component is mounted on the busbar component of the battery. The temperature sampling component is provided with a mounting bracket and a temperature detection member. The mounting bracket includes a main body portion and a mounting portion connected to each other. By connecting the mounting portion of the mounting bracket to the busbar component and disposing the temperature detection member on the main body portion, the temperature detection member is mounted on the busbar component, so that the temperature detection member of the temperature sampling component can detect the temperature of the battery cells to obtain the temperature information of the battery cells during use. Among them, by setting the thermal conductivity of the material of the mounting portion of the mounting bracket to be less than the thermal conductivity of the material of the main body portion, the phenomenon that the temperature on the busbar component is transmitted to the main body portion is alleviated, thereby reducing the influence of the temperature on the busbar component on the temperature detection member, which is beneficial to improving the accuracy and precision of the temperature detection member detecting the temperature of the battery cells. Furthermore, the temperature sampling component can more effectively obtain the usage condition of the battery cells inside the battery to improve the usage stability and reliability of the battery.

[0102] The battery disclosed in the embodiments of the present application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. A power supply system of the electrical device can be composed of the battery disclosed in the present application. In this way, it is beneficial to alleviate the problem that the result of detecting the temperature of the battery cell by the temperature sampling component is inaccurate, so as to improve the use stability and reliability of the battery.

[0103] The embodiments of the present application provide an electrical device using a battery as a power source. The electrical device can be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, a battery car, an electric vehicle, a ship, a spacecraft, etc. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric vehicle toy, an electric ship toy, an electric plane toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle, a spaceship, etc.

[0104] For the convenience of description in the following embodiments, a vehicle is taken as an example of an electrical device in an embodiment of the present application for illustration.

[0105] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, an extended-range vehicle, etc. A battery 100 is disposed inside the vehicle 1000. The battery 100 can be disposed at the bottom of the vehicle 1000, or at the head of the vehicle 1000, or at the tail of the vehicle 1000. The battery 100 can be used to supply power to the vehicle 1000. For example, the battery 100 can be used as an operating power source or a power source for use in the vehicle 1000. The vehicle 1000 can further 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, it is used for the working power requirements during the start, navigation, and driving of the vehicle 1000.

[0106] In some embodiments of the present application, the battery 100 can not only be used as an operating power source or a power source for use in the vehicle 1000, but also be used as a driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0107] Please refer to Figure 2 and Figure 3 , Figure 2 which is an exploded view of the structure of the battery 100 provided in some embodiments of the present application. Figure 3Schematic diagram of the assembly of the battery cell group 20 and the sampling assembly 30 provided by some embodiments of the present application. The battery 100 includes a box body 10 and at least one battery cell group 20. The battery cell group 20 is accommodated in the box body 10. The battery cell group 20 includes a plurality of battery cells 21 stacked along the first direction X.

[0108] Among them, the box body 10 is used to provide an assembly space for the battery cell group 20, and the box body 10 can adopt various structures. In some embodiments, the box body 10 may include a first box body 11 and a second box body 12. The first box body 11 and the second box body 12 are covered with each other along the third direction Z. The first box body 11 and the second box body 12 jointly define an assembly space for accommodating the battery cell group 20. The second box body 12 may be a hollow structure with one end open. The first box body 11 may be a plate-like structure. The first box body 11 is covered on the open side of the second box body 12 so that the first box body 11 and the second box body 12 jointly define an assembly space; the first box body 11 and the second box body 12 may also both be hollow structures with one side open, and the open side of the first box body 11 is covered on the open side of the second box body 12.

[0109] Of course, the box body 10 formed by the first box body 11 and the second box body 12 can be of various shapes, such as a cylinder, a cuboid or a cube, etc. Exemplarily, in Figure 2 the shape of the box body 10 is a cuboid.

[0110] Optionally, in the battery 100, the battery cell group 20 accommodated in the box body 10 may be one or more. When there are multiple battery cell groups 20 provided in the box body 10, the multiple battery cell groups 20 may be connected in series, in parallel or in a mixed connection. A mixed connection means that there are both series and parallel connections among the multiple battery cell groups 20. The multiple battery cell groups 20 can be directly connected in series, in parallel or in a mixed connection together, and then the whole formed by the multiple battery cell groups 20 is accommodated in the box body 10.

[0111] Exemplarily, in combination with Figure 2 and Figure 3 as shown, the battery 100 includes two battery cell groups 20. The two battery cell groups 20 are arranged along the second direction Y, and the two battery cell groups 20 are connected in series with each other.

[0112] In Figure 3In it, each battery cell group 20 includes a busbar component 22 and a plurality of battery cells 21 stacked in the first direction X. The busbar component 22 is located on one side of the plurality of battery cells 21 in the third direction Z. The busbar component 22 is used to connect the plurality of battery cells 21 to achieve electrical connection between the plurality of battery cells 21. Exemplarily, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other pairwise. The first direction X is the thickness direction of the battery cell 21, the second direction Y is the length direction of the battery cell 21, and the third direction Z is the height direction of the battery cell 21.

[0113] Among them, with reference to Figure 3 , and please further refer to Figure 4 , Figure 4 FIG. is an assembly schematic diagram of the battery cell 21 and the busbar component 22 provided by some embodiments of the present application. Two electrode terminals 211 are provided at one end of the battery cell 21 in the third direction Z. The polarities of the two electrode terminals 211 are opposite. The two electrode terminals 211 are respectively used to input or output the positive and negative electrodes of the battery cell 21. The busbar component 22 is connected to the electrode terminals 211 of the battery cell 21 to electrically connect the plurality of battery cells 21. It should be noted that the plurality of battery cells 21 in the battery cell group 20 can be in a series or parallel structure, etc. Exemplarily, in Figure 3 , the plurality of battery cells 21 in the battery cell group 20 are in a structure connected in series in sequence through a plurality of busbar components 22.

[0114] Optionally, each battery cell 21 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, but is not limited thereto. The battery cell 21 can be in a cuboid, cylindrical, prismatic, or other shape, etc. Exemplarily, in Figure 2 and Figure 3 , the battery cell 21 is in a cuboid structure.

[0115] In some embodiments, as shown in Figure 2 and Figure 3 , the battery 100 may further include a sampling assembly 30. The sampling assembly 30 is disposed in the box body 10. The sampling assembly 30 is used to be electrically connected to the battery management system of the battery 100. The sampling assembly 30 includes a wire harness assembly 31 and a temperature sampling assembly 32. The temperature sampling assembly 32 is configured to detect the temperature of the battery cell 21. The wire harness assembly 31 is used to be electrically connected to the battery management system. The temperature sampling assembly 32 is electrically connected to the wire harness assembly 31 to achieve electrical connection between the temperature sampling assembly 32 and the battery management system through the wire harness assembly 31.

[0116] Among them, the sampling assembly 30 is provided in one-to-one correspondence with the battery cell group 20, and each battery cell group 20 is correspondingly provided with one sampling assembly 30.

[0117] Exemplarily, the sampling assembly 30 is located on one side of the battery cell group 20 where the bus bar component 22 is provided in the third direction Z.

[0118] In some embodiments, referring to Figure 2 and Figure 3 as shown, the battery 100 may further include an insulating member 40. The insulating member 40 is disposed between the sampling assembly 30 and the plurality of battery cells 21 to insulate and isolate the sampling assembly 30 and the battery cells 21, thereby facilitating reducing the lap risk between the sampling assembly 30 and the battery cells 21, and thus being able to alleviate the phenomenon of internal short - circuit occurring during the use of the battery 100, so as to improve the use reliability of the battery 100.

[0119] Among them, the insulating member 40 functions to insulate and isolate the battery cells 21 and the sampling assembly 30. The material of the insulating member 40 can be various. For example, the material of the insulating member 40 can be rubber, silica gel or plastic, etc.

[0120] Exemplarily, the bus bar component 22 is disposed on the side of the insulating member 40 facing away from the battery cells 21, such that the bus bar component 22 and the sampling assembly 30 are both located on the side of the insulating member 40 facing away from the battery cells 21 in the third direction Z. Correspondingly, a first avoidance hole (not shown in the figure) is provided on the insulating member 40. The first avoidance hole penetrates through both sides of the insulating member 40 along the third direction Z, and each first avoidance hole is used for a electrode terminal 211 of a battery cell 21 to pass through, so as to facilitate the connection between the electrode terminal 211 and the bus bar component 22.

[0121] According to some embodiments of the present application, referring to Figure 3 and Figure 4 , and further referring to Figure 5 , Figure 6 , Figure 7 and Figure 8 , Figure 5 is a partial structural schematic diagram of the battery 100 provided by some embodiments of the present application, Figure 6 is an exploded view of the structure of the temperature sampling component 32 provided by some embodiments of the present application, Figure 7 is a structural schematic diagram of the mounting bracket 322 of the temperature sampling component 32 provided by some embodiments of the present application, Figure 8A front view of the mounting bracket 322 of the temperature sampling component 32 provided in some embodiments of the present application in the second direction Y. The present application provides a battery 100, which includes a plurality of battery cells 21, a busbar component 22, and a temperature sampling component 32. The busbar component 22 is electrically connected to the plurality of battery cells 21. The temperature sampling component 32 includes a temperature detector 321 and a mounting bracket 322. The temperature detector 321 is configured to detect the temperature of the battery cell 21. The mounting bracket 322 includes a body portion 3221 and a mounting portion 3222 that are connected to each other. The temperature detector 321 is disposed on the body portion 3221, and the mounting portion 3222 is connected to the busbar component 22. The thermal conductivity of the material of the mounting portion 3222 is less than the thermal conductivity of the material of the body portion 3221.

[0122] Among them, the temperature sampling component 32 includes a temperature detector 321 and a mounting bracket 322. The temperature detector 321 functions to detect the temperature of the battery cell 21. The temperature detector 321 is electrically connected to the battery management system through a harness assembly 31, so as to be able to monitor and obtain the temperature information of the battery cell 21 during use. The temperature detector 321 is mounted on the mounting bracket 322, and the mounting bracket 322 is connected to the busbar component 22, so that the mounting bracket 322 functions to assemble and fix the temperature detector 321.

[0123] Exemplarily, the structure of the temperature detector 321 can be various. For example, the temperature detector 321 can be an epoxy thermistor or a glass-encapsulated thermistor, etc.

[0124] The mounting bracket 322 includes a body portion 3221 and a mounting portion 3222 that are connected to each other. That is, the mounting bracket 322 is composed of two parts, namely, the body portion 3221 and the mounting portion 3222. The body portion 3221 of the mounting bracket 322 is used to assemble and fix the temperature detector 321, and the mounting portion 3222 of the mounting bracket 322 is used to be mounted on the busbar component 22.

[0125] The thermal conductivity of the material of the mounting portion 3222 is less than the thermal conductivity of the material of the body portion 3221. That is to say, the heat conduction performance of the mounting portion 3222 is worse than that of the body portion 3221.

[0126] Exemplarily, the material of the mounting portion 3222 can be various. For example, the material of the mounting portion 3222 can be polypropylene or polycarbonate, etc. Of course, the material of the body portion 3221 can also be various. For example, the material of the body portion 3221 can be polyphenylene sulfide or polyhexamethylene terephthalamide, etc.

[0127] Optionally, the body portion 3221 and the mounting portion 3222 of the mounting bracket 322 may be an integrally formed structure, that is, the body portion 3221 and the mounting portion 3222 are an integral structure. The body portion 3221 and the mounting portion 3222 may be a structure formed by two different materials through an integral forming process, such as injection molding, etc. Of course, the body portion 3221 and the mounting portion 3222 of the mounting bracket 322 may be a split structure, that is, the body portion 3221 and the mounting portion 3222 are a split structure, and the connection structure between the body portion 3221 and the mounting portion 3222 may be various, such as bonding, snap connection or hot melt connection, etc.

[0128] In this embodiment, a temperature sampling component 32 is mounted on the busbar component 22 of the battery 100. The temperature sampling component 32 is provided with a mounting bracket 322 and a temperature detection component 321. The mounting bracket 322 includes a body portion 3221 and a mounting portion 3222 that are connected to each other. By connecting the mounting portion 3222 of the mounting bracket 322 to the busbar component 22 and arranging the temperature detection component 321 on the body portion 3221, the temperature detection component 321 is mounted on the busbar component 22, so that the temperature detection component 321 of the temperature sampling component 32 can detect the temperature of the battery cell 21 to obtain the temperature information of the battery cell 21 during use. Among them, by setting the thermal conductivity of the material of the mounting portion 3222 of the mounting bracket 322 to be less than the thermal conductivity of the material of the body portion 3221, the phenomenon that the temperature on the busbar component 22 is transmitted to the body portion 3221 is alleviated, thereby reducing the influence of the temperature on the busbar component 22 on the temperature detection component 321, which is beneficial to improving the accuracy and accuracy of the temperature detection component 321 in detecting the temperature of the battery cell 21, and further enabling the temperature sampling component 32 to more effectively obtain the usage condition of the battery cell 21 inside the battery 100, so as to improve the usage stability and reliability of the battery 100.

[0129] According to some embodiments of the present application, in combination with Figure 3 and Figure 5 as shown, the body portion 3221 directly or indirectly abuts against the battery cell 21. That is to say, the body portion 3221 of the mounting bracket 322 may be a structure that directly contacts the battery cell 21 or indirectly contacts through other components.

[0130] In this embodiment, by setting the body portion 3221 of the mounting bracket 322 to be a structure that directly or indirectly abuts against the battery cell 21, it is convenient for the temperature on the battery cell 21 to be transmitted to the body portion 3221, thereby being beneficial to improving the accuracy and accuracy of the temperature detection component 321 in detecting the temperature of the battery cell 21.

[0131] In some embodiments, referring to Figure 5 、 Figure 7 and Figure 8As shown, a heat-conducting pad 3223 is provided on the side of the body portion 3221 facing the battery cell 21, and the heat-conducting pad 3223 is in contact with the battery cell 21. That is to say, the body portion 3221 of the mounting bracket 322 and the battery cell 21 are structured to be indirectly in contact through the heat-conducting pad 3223.

[0132] Exemplarily, the material of the heat-conducting pad 3223 can be various. For example, the material of the heat-conducting pad 3223 can be silica gel, silicone grease, silicone rubber, etc.

[0133] It should be noted that in the embodiment of the present application, a heat-conducting pad 3223 is further provided on the side of the body portion 3221 of the mounting bracket 322 facing the battery cell 21 in the third direction Z, so that the body portion 3221 of the mounting bracket 322 is structured to be indirectly in contact with the battery cell 21 through the heat-conducting pad 3223. Correspondingly, the insulating member 40 is provided with a second avoidance hole (not shown in the figure) at the position corresponding to the mounting bracket 322 in the third direction Z. The second avoidance hole penetrates through both sides of the insulating member 40 along the third direction Z, so that the insulating member 40 can avoid the mounting bracket 322, facilitating the body portion 3221 of the mounting bracket 322 to be in contact with the battery cell 21 through the heat-conducting pad 3223.

[0134] In this embodiment, by providing the heat-conducting pad 3223 on the side of the body portion 3221 facing the battery cell 21, and the heat-conducting pad 3223 is in contact with the battery cell 21, the body portion 3221 is structured to be indirectly in contact with the battery cell 21 through the heat-conducting pad 3223. Thus, the heat of the battery cell 21 can be better transferred to the body portion 3221 through the heat-conducting pad 3223, and further, the accuracy and precision of the temperature detection member 321 for detecting the temperature of the battery cell 21 can be improved.

[0135] According to some embodiments of the present application, as shown in Figure 3 、 Figure 4 、 Figure 5 and Figure 7 , the battery cell 21 may include a housing 212, an electrode assembly (not shown in the figure), and electrode terminals 211. The electrode assembly is accommodated in the housing 212, the electrode terminals 211 are provided on the housing 212, the electrode terminals 211 are electrically connected to the electrode assembly, and the electrode terminals 211 are connected to the bus bar member 22. The body portion 3221 is directly or indirectly in contact with the housing 212.

[0136] Among them, the electrode terminals 211 function to output or input the electric energy of the battery cell 21. The battery cell 21 includes two electrode terminals 211, the polarities of the two electrode terminals 211 are opposite, and both of the two electrode terminals 211 are provided on the wall of the housing 212 on the side facing the sampling assembly 30 in the third direction Z.

[0137] In the embodiments of the present application, the outer shell 212 can also be used to accommodate an electrolyte, such as an electrolytic solution. The outer shell 212 can have various structural forms. The material of the outer shell 212 can also be various, such as copper, iron, aluminum, steel, aluminum alloy, etc. In some embodiments, the outer shell 212 can include a housing and an end cap. An accommodation cavity is formed inside the housing, and the housing is a hollow structure with one end open. The end cap covers the open end of the housing and forms a sealed connection to form a sealed space for accommodating the electrode assembly and the electrolyte.

[0138] Optionally, the wall of the outer shell 212 facing the sampling assembly 30 in the third direction Z can be the end cap, or it can be the bottom wall of the housing opposite to the end cap in the third direction Z. That is to say, the electrode terminal 211 can be arranged on the end cap of the outer shell 212, or it can be arranged on the bottom wall of the housing opposite to the end cap in the third direction Z.

[0139] It should be noted that the electrode assembly is a component in the battery cell 21 where an electrochemical reaction occurs. The structure of the electrode assembly can be various. For example, the electrode assembly can be a wound structure formed by winding a positive electrode sheet, a separator, and a negative electrode sheet, or it can be a stacked structure formed by stacking a positive electrode sheet, a separator, and a negative electrode sheet. Similarly, the number of electrode assemblies accommodated in the outer shell 212 can be one or multiple.

[0140] The main body portion 3221 directly or indirectly abuts against the outer shell 212. Exemplarily, in the embodiments of the present application, the main body portion 3221 of the mounting bracket 322 directly or indirectly abuts against the wall of the outer shell 212 where the electrode terminal 211 is arranged in the third direction Z. It should be noted that in the embodiments where the heat-conducting pad 3223 is arranged on the side of the main body portion 3221 facing the battery cell 21, the main body portion 3221 of the mounting bracket 322 abuts against the wall of the outer shell 212 where the electrode terminal 211 is arranged through the heat-conducting pad 3223. That is to say, the heat-conducting pad 3223 is arranged between the main body portion 3221 of the mounting bracket 322 and the wall of the outer shell 212 where the electrode terminal 211 is arranged in the third direction Z.

[0141] In this embodiment, the battery cell 21 is provided with the outer shell 212, the electrode assembly accommodated in the outer shell 212, and the electrode terminal 211 arranged on the outer shell 212. By directly or indirectly abutting the main body portion 3221 against the outer shell 212 of the battery cell 21, it is beneficial to reduce the difficulty of mutual abutting and assembling between the main body portion 3221 and the battery cell 21, and enables the temperature of the battery cell 21 to be better transferred to the main body portion 3221, so that the temperature detection member 321 can detect the temperature of the battery cell 21, which is beneficial to improving the accuracy and precision of the temperature detection member 321 for detecting the temperature of the battery cell 21.

[0142] According to some embodiments of the present application, refer toFigure 7 and Figure 8 As shown in Figure 8 , the body part 3221 and the mounting part 3222 of the mounting bracket 322 are integrally formed. That is to say, the body part 3221 and the mounting part 3222 of the mounting bracket 322 are an integral structure formed by an integral forming process.

[0143] Exemplarily, the body part 3221 and the mounting part 3222 of the mounting bracket 322 can form an integrally formed structure through processes such as two-color injection molding.

[0144] In this embodiment, by setting the body part 3221 and the mounting part 3222 of the mounting bracket 322 as an integrally formed structure, the connection reliability and stability between the body part 3221 and the mounting part 3222 of the mounting bracket 322 can be improved, so as to improve the reliability of the temperature detection part 321 assembled on the busbar component 22. Furthermore, the phenomenon that the temperature detection part 321 falls off or detaches during use can be reduced, so as to improve the use stability and reliability of the battery 100.

[0145] Of course, the structure of the mounting bracket 322 is not limited to this. In some embodiments, refer to Figure 9 and Figure 10 , Figure 9 As shown in Figure 9 , it is a schematic structural diagram of the mounting bracket 322 of the temperature sampling component 32 provided in some other embodiments of the present application. Figure 10 As shown in Figure 10 , it is an exploded view of the structure of the mounting bracket 322 of the temperature sampling component 32 provided in some other embodiments of the present application. The mounting bracket 322 can also be other structures. For example, the body part 3221 and the mounting part 3222 are separately arranged. That is to say, the body part 3221 and the mounting part 3222 of the mounting bracket 322 are a split structure, and the body part 3221 and the mounting part 3222 are connected to each other.

[0146] Exemplarily, the connection structure between the body part 3221 and the mounting part 3222 can be various, such as adhesive connection, snap connection or hot melt connection, etc.

[0147] In this embodiment, by setting the body part 3221 and the mounting part 3222 of the mounting bracket 322 as a separately arranged structure, it is convenient for the body part 3221 and the mounting part 3222 with different thermal conductivities to be connected and assembled to each other, which is beneficial to reducing the assembly difficulty of the body part 3221 and the mounting part 3222 of the mounting bracket 322.

[0148] In some embodiments, please refer to Figure 9 and Figure 10 As shown in Figure 10 , the body part 3221 and the mounting part 3222 are snap-connected.

[0149] In this embodiment, by setting the main body part 3221 and the mounting part 3222 to be in a mutually snap-fitting structure, the detachable connection between the main body part 3221 and the mounting part 3222 is realized. On the one hand, the assembly difficulty between the main body part 3221 and the mounting part 3222 can be reduced, so as to improve the production efficiency of the mounting bracket 322. On the other hand, it is convenient to quickly disassemble and maintain the main body part 3221 and the mounting part 3222 subsequently, which is beneficial to reducing the later maintenance difficulty of the temperature sampling component 32, and different main body parts 3221 or mounting parts 3222 with different structures or different materials can be replaced according to different usage situations and usage scenarios, which is beneficial to expanding the applicable range of the temperature sampling component 32.

[0150] According to some embodiments of the present application, please continue to refer to Figure 9 and Figure 10 As shown, one of the main body part 3221 and the mounting part 3222 is provided with a first card slot 3221a, and the other is provided with a buckle 3222a, and the buckle 3222a is in snap-fit with the first card slot 3221a. That is to say, the connection between the main body part 3221 and the mounting part 3222 is realized by a structure in which the buckle 3222a and the first card slot 3221a are mutually snap-fitted.

[0151] Exemplarily, in Figure 10 the buckle 3222a is provided on the mounting part 3222, and correspondingly, the first card slot 3221a is provided on the main body part 3221. Of course, in other embodiments, the buckle 3222a may also be provided on the main body part 3221, and correspondingly, the first card slot 3221a is provided on the mounting part 3222.

[0152] It should be noted that the number of buckles 3222a provided on each mounting part 3222 may be one or more. Correspondingly, the first card slots 3221a provided on the main body part 3221 correspond to the buckles 3222a one by one.

[0153] In this embodiment, by providing a first card slot 3221a on one of the main body part 3221 and the mounting part 3222, and providing a buckle 3222a on the other, the snap connection between the main body part 3221 and the mounting part 3222 can be realized through the mutual snap-fitting between the buckle 3222a and the first card slot 3221a. The structure is simple and easy to implement.

[0154] In some embodiments, refer to Figure 10As shown, the main body 3221 and the mounting portion 3222 are arranged along a first direction X, and the mounting portion 3222 is provided with two buckles 3222a on one side of the main body 3221 in the first direction X, and the two buckles 3222a are arranged at intervals along a third direction Z, and the surfaces of both sides of the main body 3221 in the third direction Z are provided with first slots 3221a, and each first slot 3221a is engaged with a buckle 3222a, and the third direction Z is perpendicular to the first direction X.

[0155] Among them, the two clips 3222a of the mounting portion 3222 are arranged at intervals and face each other along the third direction Z, so that a part of the main body 3221 can be located between the two clips 3222a in the third direction Z, and correspondingly, the surfaces of both sides of the main body 3221 in the third direction Z are provided with first clip grooves 3221a, and each first clip groove 3221a is engaged with a clip 3222a, that is, the surfaces of both sides of the main body 3221 in the third direction Z are provided with first clip grooves 3221a and the positions are corresponding in the third direction Z, and the part of the main body 3221 between the bottom surfaces of the corresponding two first clip grooves 3221a is located between the corresponding two second clips 3222a, so that the two clips 3222a can also cooperate to clamp and assemble the part of the main body 3221 along the third direction Z.

[0156] Exemplarily, the mounting frame 322 is provided with two mounting portions 3222, and the two mounting portions 3222 are respectively connected to the two sides of the main body 3221 in the first direction X. Correspondingly, the two mounting portions 3222 are protrudingly provided with two buckles 3222a on the side facing the main body 3221 in the first direction X, and the main body 3221 is provided with two first card grooves 3221a on both sides in the third direction Z. The two card grooves located on the same side of the main body 3221 in the third direction Z are arranged at intervals along the first direction X so that each buckle 3222a can be clamped in a first card groove 3221a.

[0157] Optionally, along the third direction Z, in the same mounting portion 3222, the surface of one buckle 3222a facing away from the other buckle 3222a is coplanar with the surface of the main body 3221 corresponding to the first slot 3221a, and the surfaces of the mounting portion 3222 on both sides in the third direction Z are respectively coplanar with the surfaces of the main body 3221 on both sides in the third direction Z.

[0158] In this embodiment, by protruding two buckles 3222a on one side of the installation part 3222 facing the main body part 3221 along the first direction X, and the two buckles 3222a are arranged at intervals along the third direction Z. Correspondingly, first clamping grooves 3221a are arranged on the surfaces on both sides of the main body part 3221 in the third direction Z, and each first clamping groove 3221a is for one buckle 3222a to be inserted. With this structure, the installation frame 322 can make part of the main body part 3221 be clamped between the two buckles 3222a in the third direction Z, so that while the two buckles 3222a are respectively clamped with the two first clamping grooves 3221a, they can also cooperate to clamp the main body part 3221, thereby further improving the firmness of the mutual clamping between the main body part 3221 and the installation part 3222, and improving the structural stability and reliability of the installation frame 322.

[0159] According to some embodiments of the present application, the thermal conductivity of the material of the main body part 3221 is λ 1 , satisfying 1.8 W / (m·K) ≤ λ 1 ≤ 2.5 W / (m·K).

[0160] Exemplarily, the thermal conductivity λ of the material of the main body part 3221 1 can be 1.8 W / (m·K), 1.9 W / (m·K), 2 W / (m·K), 2.1 W / (m·K), 2.2 W / (m·K), 2.3 W / (m·K), 2.4 W / (m·K) or 2.5 W / (m·K), etc.

[0161] In this embodiment, by setting the thermal conductivity of the material of the main body part 3221 to be 1.8 W / (m·K) to 2.5 W / (m·K), the main body part 3221 has good thermal conductivity, so that the temperature detection element 321 arranged on the main body part 3221 can better obtain the temperature of the battery cell 21, which is beneficial to further improving the accuracy and precision of the temperature detection element 321 for detecting the temperature of the battery cell 21.

[0162] According to some embodiments of the present application, the thermal conductivity of the material of the installation part 3222 is λ 2 , satisfying 0.15 W / (m·K) ≤ λ 2 ≤ 0.25 W / (m·K).

[0163] Exemplarily, the thermal conductivity λ of the material of the installation part 3222 2It can be 0.15W / (m·K), 0.16W / (m·K), 0.17W / (m·K), 0.18W / (m·K), 0.19W / (m·K), 0.2W / (m·K), 0.21W / (m·K), 0.22W / (m·K), 0.23W / (m·K), 0.24W / (m·K) or 0.25W / (m·K), etc.

[0164] In this embodiment, the thermal conductivity of the material of the mounting portion 3222 is set to 0.15W / (m·K) to 0.25W / (m·K) to reduce the thermal conductivity of the mounting portion 3222, so that the temperature detection component 321 arranged on the main body 3221 can better obtain the temperature of the battery cell 21, thereby further alleviating the phenomenon that the temperature on the convergence component 22 is transferred to the main body 3221, which is beneficial to further reduce the influence of the temperature on the convergence component 22 on the temperature detection component 321, and further improve the precision and accuracy of the temperature detection component 321 in detecting the temperature of the battery cell 21.

[0165] According to some embodiments of the present application, see Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, a mounting cavity 3221 c having an opening 3221 b is formed inside the main body 3221 , and the temperature detecting element 321 is accommodated in the mounting cavity 3221 c .

[0166] Among them, an installation cavity 3221c with an opening 3221b is formed inside the main body 3221, that is, an installation cavity 3221c for assembling the temperature detection component 321 is formed inside the main body 3221, and the installation cavity 3221c passes through at least one end of the main body 3221 to form an opening 3221b on the main body 3221, and the opening 3221b is connected to the installation cavity 3221c.

[0167] In this embodiment, a mounting cavity 3221c having an opening 3221b is provided inside the main body 3221, and the temperature sensing element 321 is accommodated in the mounting cavity 3221c. The temperature sampling assembly 32 with such a structure can, on the one hand, protect the temperature sensing element 321 to a certain extent through the main body 3221, so as to reduce the phenomenon that the temperature sensing element 321 is damaged by bumps during use, and can reduce the difficulty of assembling the temperature sensing element 321 and the main body 3221. On the other hand, it can also reduce the influence of other components on the temperature sensing element 321, which is conducive to improving the precision and accuracy of the temperature sensing element 321 in detecting the temperature of the battery cell 21.

[0168] According to some embodiments of the present application, see Figure 6 and Figure 7As shown, the temperature sampling component 32 may further include a sealant 323. The sealant 323 is filled in the installation cavity 3221c, and the sealant 323 coats the temperature detection component 321.

[0169] Among them, the sealant 323 is filled in the installation cavity 3221c, and the sealant 323 coats the temperature detection component 321. That is to say, the installation cavity 3221c is filled with the sealant 323, and the temperature detection component 321 arranged in the installation cavity 3221c is embedded in the sealant 323, so that the sealant 323 coats the outside of the temperature detection component 321.

[0170] Exemplarily, the material of the sealant 323 can be various, such as epoxy resin glue, natural resin glue, etc.

[0171] In this embodiment, the installation cavity 3221c of the main body part 3221 is also filled with the sealant 323, and the temperature detection component 321 is coated with the sealant 323. On the one hand, it can improve the stability and reliability of the temperature detection component 321 installed in the installation cavity 3221c, and can further stabilize the temperature detection component 321 to relieve phenomena such as shaking or bumping of the temperature detection component 321 in the installation cavity 3221c. On the other hand, it can also seal the temperature detection component 321 to reduce phenomena such as damage of the temperature detection component 321 after being affected by moisture, thereby being beneficial to improving the service life of the temperature detection component 321.

[0172] According to some embodiments of the present application, in combination with Figure 5 and Figure 6 As shown, the temperature sampling component 32 may further include a connection wire 324. One end of the connection wire 324 extends into the installation cavity 3221c and is connected to the temperature detection component 321, and the other end is located outside the installation cavity 3221c and is used for electrical connection with the battery management system.

[0173] Among them, the connection wire 324 plays a role in electrically connecting the temperature detection component 321 and the wire harness assembly 31. The wire harness assembly 31 is used for electrical connection with the battery management system to realize the electrical connection between the temperature detection component 321 and the battery management system. In the embodiment of the present application, there are two connection wires 324, the polarities of the two connection wires 324 are opposite, and the two connection wires 324 are respectively connected to the positive electrode and the negative electrode of the temperature detection component 321.

[0174] One end of the connection wire 324 extends into the installation cavity 3221c and is connected to the temperature detection component 321, and the other end is located outside the installation cavity 3221c. That is to say, the connection wire 324 is a structure partially located outside the mounting bracket 322 and one end of the connection wire 324 extends into the installation cavity 3221c of the main body part 3221 of the mounting bracket 322, so that the connection wire 324 can be connected to the temperature detection component 321.

[0175] Optionally, the connection line 324 includes a conductor and an insulating outer shell covering the outer side of the conductor. The connection line 324 is connected to the temperature detection component 321, that is, the conductor of the connection line 324 is connected to the temperature detection component 321, and the insulating outer shells of the two connection lines 324 are connected to each other to form a weak connection structure. Exemplarily, the conductor of the connection line 324 is welded to the temperature detection component 321 to form a welding mark. And in the embodiment where the sealing glue 323 is filled in the installation cavity 3221c, the sealing glue 323 covers the outside of the welding mark formed by the welding connection between the conductor of the connection line 324 and the temperature detection component 321.

[0176] It should be noted that in other embodiments, the connection line 324 may not be provided in the temperature sampling component 32, that is, the temperature detection component 321 of the temperature sampling component 32 is directly connected to the wiring harness component 31.

[0177] In this embodiment, the temperature sampling component 32 is further provided with a connection line 324. One end of the connection line 324 extends into the installation cavity 3221c and is connected to the temperature detection component 321, and the other end is located outside the installation cavity 3221c and is used for electrical connection with the battery management system, so as to reduce the difficulty of the electrical connection between the temperature detection component 321 and the battery management system, and the connection line 324 and the temperature detection component 321 can be assembled with each other first and then assembled into the battery 100 for electrical connection with the battery management system through the connection line 324, which is beneficial to optimizing the production rhythm of the battery 100 and improving the production efficiency of the battery 100.

[0178] According to some embodiments of the present application, refer to Figure 7 and Figure 8 as well as Figure 9 and Figure 10 As shown, the body portion 3221 and the installation portion 3222 are arranged along the first direction X. The installation cavity 3221c has an opening 3221b formed at at least one end of the body portion 3221 along the second direction Y, and the second direction Y is perpendicular to the first direction X. That is to say, the installation portion 3222 and the opening 3221b are respectively arranged at one end of the body portion 3221 in different directions.

[0179] Wherein, the installation cavity 3221c has an opening 3221b formed at at least one end of the body portion 3221 along the second direction Y, that is, the installation cavity 3221c may have an opening 3221b formed only at one end of the body portion 3221 along the second direction Y, or may have openings 3221b formed at both ends of the body portion 3221.

[0180] In this embodiment, by arranging the main body part 3221 and the mounting part 3222 of the mounting bracket 322 in a structure arranged along the first direction X, and forming the opening 3221b of the mounting cavity 3221c at one end of the main body part 3221 in the second direction Y, the interference effect between the opening 3221b for assembling the temperature detection part 321 on the main body part 3221 and the mounting part 3222 is reduced, so as to facilitate the assembly of the temperature detection part 321 into the mounting cavity 3221c and facilitate the connection of the mounting part 3222 to the busbar component 22.

[0181] In some embodiments, as shown in Figure 8 the mounting cavity 3221c penetrates through both ends of the main body part 3221 along the second direction Y, so that openings 3221b are formed at both ends of the main body part 3221 in the second direction Y.

[0182] In this embodiment, by arranging the mounting cavity 3221c to penetrate through both ends of the main body part 3221 along the second direction Y, the mounting cavity 3221c can form openings 3221b at both ends of the main body part 3221 along the second direction Y. On the one hand, it is convenient to machine the mounting cavity 3221c inside the main body part 3221, which is beneficial to reducing the manufacturing difficulty of the mounting cavity 3221c of the main body part 3221. On the other hand, it is convenient to assemble the temperature detection part 321 into the mounting cavity 3221c, which is beneficial to further reducing the assembly difficulty between the temperature detection part 321 and the main body part 3221.

[0183] In some embodiments, the main body part 3221 and the busbar component 22 are arranged at intervals, that is to say, the main body part 3221 and the busbar component 22 are not in direct contact.

[0184] In this embodiment, by arranging the main body part 3221 and the busbar component 22 at intervals, the main body part 3221 with the temperature detection part 321 installed is not in direct contact with the busbar component 22, so as to relieve the phenomenon that the temperature on the busbar component 22 is directly transmitted to the main body part 3221, thereby reducing the influence of the temperature on the busbar component 22 on the temperature detection part 321, which is beneficial to improving the accuracy and precision of the temperature detection part 321 for detecting the temperature of the battery cell 21.

[0185] According to some embodiments of the present application, as shown in Figure 5 the mounting part 3222 is snap-connected to the busbar component 22.

[0186] Of course, in other embodiments, the connection structure between the mounting part 3222 of the mounting bracket 322 and the busbar component 22 can also be bonding, bolt screwing, etc.

[0187] In this embodiment, by setting the mounting portion 3222 of the mounting frame 322 as a structure that is snap-connected to the convergence component 22, on the one hand, the difficulty of assembling the mounting portion 3222 of the mounting frame 322 and the convergence component 22 can be reduced, and there is no need to introduce other more complex structures or components to achieve the assembly between the mounting portion 3222 of the mounting frame 322 and the convergence component 22, which is beneficial to improving the assembly efficiency between the temperature sampling component 32 and the convergence component 22. On the other hand, a detachable connection between the mounting portion 3222 of the mounting frame 322 and the convergence component 22 can be achieved, thereby facilitating the maintenance or replacement of the temperature sampling component 32 during later use, which is beneficial to reducing the difficulty and cost of later maintenance of the temperature sampling component 32.

[0188] In some embodiments, see Figure 5 , Figure 6 and Figure 7 As shown, the mounting portion 3222 is provided with a second slot 3222 b, and a portion of the converging component 22 is clamped in the second slot 3222 b.

[0189] It should be noted that, in other embodiments, the snap-fit ​​structure between the mounting portion 3222 and the confluence component 22 may also be other structures. For example, a second snap-fit ​​groove 3222b is provided on the confluence component 22, and correspondingly, at least a portion of the mounting portion 3222 is snapped into the second snap-fit ​​groove 3222b.

[0190] In this embodiment, a second card slot 3222b is provided on the mounting portion 3222 of the mounting frame 322, and part of the confluence component 22 is clamped in the second card slot 3222b to achieve clamping assembly between the mounting portion 3222 of the mounting frame 322 and the confluence component 22, which has a simple structure and is easy to assemble.

[0191] According to some embodiments of the present application, see Figure 5 , Figure 7 and Figure 8 As shown, the main body 3221 and the mounting portion 3222 are arranged along the first direction X, and a second card slot 3222b is provided on the surface of the mounting portion 3222 on the side away from the main body 3221 in the first direction X, and the second card slot 3222b passes through both ends of the mounting portion 3222 along the second direction Y, and the second direction Y is perpendicular to the first direction X.

[0192] Among them, the second card slot 3222b passes through both ends of the mounting portion 3222 along the second direction Y, that is, the second card slot 3222b is a through slot arranged on the surface of the side of the mounting portion 3222 away from the main body portion 3221 and extending along the second direction Y, so that the confluence component 22 can be inserted into the second card slot 3222b from the first direction X, and can also be inserted into the second card slot 3222b from the second direction Y.

[0193] In this embodiment, by disposing the second card slot 3222b on the surface of the mounting portion 3222 on the side facing away from the body portion 3221 in the first direction X, and the second card slot 3222b runs through both ends of the mounting portion 3222 along the second direction Y, on the one hand, the difficulty of machining and forming the second card slot 3222b on the mounting portion 3222 can be reduced, so as to reduce the manufacturing difficulty of the mounting bracket 322, and on the other hand, the difficulty of partially clamping the busbar component 22 into the second card slot 3222b can be further reduced, so as to reduce the assembly difficulty between the busbar component 22 and the mounting portion 3222 of the mounting bracket 322, thereby effectively improving the production efficiency of the battery 100.

[0194] According to some embodiments of the present application, with reference to Figure 5 、 Figure 6 and Figure 7 ,and please further refer to Figure 11 , Figure 11 FIG. 12 is a schematic structural diagram of the busbar component 22 provided in some embodiments of the present application. A notch 221 is provided at one end of the busbar component 22 in the second direction Y, the notch 221 runs through both sides of the busbar component 22 along the third direction Z, the mounting bracket 322 is inserted into the notch 221 along the second direction Y, and a part of the busbar component 22 is clamped into the second card slot 3222b, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other in pairs.

[0195] Wherein, the third direction Z is also the thickness direction of the busbar component 22, and the notch 221 runs through both sides of the busbar component 22 along the third direction Z, that is, the notch 221 runs through the surfaces of both sides of the busbar component 22 in its thickness direction.

[0196] Exemplarily, the notch 221 is provided at one end of the busbar component 22 in the second direction Y, and in a plane perpendicular to the third direction Z, the orthographic projection of the notch 221 is in a "U" shape.

[0197] The mounting bracket 322 is inserted into the notch 221 along the second direction Y, and a part of the busbar component 22 is clamped into the second card slot 3222b, that is to say, a part of the mounting bracket 322 is located in the notch 221 in the third direction Z. Correspondingly, a part of the area of the busbar component 22 where the notch 221 is formed is clamped into the second card slot 3222b of the mounting portion 3222 of the mounting bracket 322, that is to say, a part of the wall surface of the notch 221 of the busbar component 22 is located in the second card slot 3222b, and in the third direction Z, parts of the mounting portion 3222 are located on both sides of the busbar component 22 respectively.

[0198] In this embodiment, one end of the busbar component 22 in the second direction Y is provided with a notch 221, and the notch 221 is a structure that penetrates both sides of the busbar component 22 in the third direction Z. When the mounting bracket 322 is inserted into the notch 221 of the busbar component 22 along the second direction Y, a part of the busbar component 22 can also be stuck in the second card slot 3222b of the mounting portion 3222, that is, a structure can be realized in which a part of the busbar component 22 is inserted into the second card slot 3222b from one end of the second card slot 3222b in the second direction Y. The battery 100 adopting this structure can improve the reliability and stability of the mounting bracket 322 of the temperature sampling component 32 assembled onto the busbar component 22, and the notch 221 of the busbar component 22 can also play a certain positioning and limiting role for the mounting bracket 322 of the temperature sampling component 32, which is beneficial to improving the assembly quality of the mounting bracket 322 of the temperature sampling component 32 and the busbar component 22.

[0199] In some embodiments, referring to Figure 5 、 Figure 7 、 Figure 8 and Figure 11 as shown, the mounting bracket 322 may include two mounting portions 3222. The two mounting portions 3222 are respectively connected to both sides of the body portion 3221 in the first direction X, and second card slots 3222b are provided on the surfaces of the two mounting portions 3222 on the side facing away from the body portion 3221 in the first direction X.

[0200] Among them, both sides of the body portion 3221 in the first direction X are connected with mounting portions 3222, and second card slots 3222b are provided on the surfaces of the two mounting portions 3222 on the side facing away from the body portion 3221, so that the two opposite wall surfaces of the notch 221 of the busbar component 22 can be respectively stuck in the second card slots 3222b of the two mounting portions 3222.

[0201] In this embodiment, by connecting mounting portions 3222 to both sides of the body portion 3221 along the first direction X, and second card slots 3222b are provided on the sides of the two mounting portions 3222 facing away from the body portion 3221 in the first direction X, the two opposite sides of the busbar component 22 at the notch 221 can be respectively stuck in the two second card slots 3222b of the two mounting portions 3222, so as to further improve the reliability and stability of the mounting bracket 322 of the temperature sampling component 32 assembled onto the busbar component 22, which is beneficial to further improving the assembly quality of the mounting bracket 322 of the temperature sampling component 32 and the busbar component 22.

[0202] In some embodiments, please continue to refer to Figure 5 、 Figure 7 、 Figure 8 and Figure 11As shown, along the second direction Y, the body portion 3221 and the busbar component 22 are spaced apart. That is to say, on both sides of the body portion 3221 in the first direction X, they are respectively in contact with the busbar component 22 through two mounting portions 3222, while one end of the body portion 3221 inserted into the notch 221 of the busbar component 22 in the second direction Y is not in contact with the busbar component 22.

[0203] In this embodiment, by spacing the body portion 3221 and the busbar component 22 apart in the second direction Y, the two sides of the body portion 3221 in the first direction X can be indirectly mounted to the busbar component 22 through two mounting portions 3222 respectively, and the body portion 3221 is also not in direct contact with the busbar component 22 in the second direction Y. Thus, while improving the assembly stability of the mounting bracket 322 and the busbar component 22, it can also alleviate the phenomenon that the temperature on the busbar component 22 is directly transferred to the body portion 3221, thereby reducing the influence of the temperature on the busbar component 22 on the temperature detection component 321.

[0204] According to some embodiments of the present application, with reference to Figure 7 and Figure 8 , and further with reference to Figure 12 , Figure 12 is Figure 7 a partial enlarged view of the A portion of the mounting bracket 322 shown. The second card slot 3222b has two slot side surfaces 3222c arranged oppositely in the third direction Z, and at least one slot side surface 3222c is convexly provided with a pressing portion 3224. Along the third direction Z, the pressing portion 3224 is located on one side of the busbar component 22, and the pressing portion 3224 presses on the portion of the busbar component 22 stuck in the second card slot 3222b.

[0205] Among them, the second card slot 3222b also has a slot bottom surface 3222d. The slot bottom surface 3222d is connected to the two slot side surfaces 3222c respectively on both sides in the third direction Z. At least one slot side surface 3222c is convexly provided with a pressing portion 3224, that is, it can be that only one slot side surface 3222c of the second card slot 3222b is provided with a pressing portion 3224, or both slot side surfaces 3222c are provided with pressing portions 3224.

[0206] The pressing portion 3224 presses on the portion of the busbar component 22 stuck in the second card slot 3222b, that is, the portion of the busbar component 22 located in the second card slot 3222b and the pressing portion 3224 are mutually pressed in the third direction Z, so that the portion of the busbar component 22 located in the second card slot 3222b and the pressing portion 3224 are in an interference fit structure in the third direction Z.

[0207] In this embodiment, by protruding a pressing portion 3224 on at least one groove side surface 3222c of the second card slot 3222b, and the pressing portion 3224 pressing against one side of the bus bar component 22 in the third direction Z, a structure in which the portion of the bus bar component 22 stuck in the second card slot 3222b and the mounting portion 3222 are in interference fit can be realized. Furthermore, it is beneficial to further improve the firmness of the bus bar component 22 stuck in the second card slot 3222b of the mounting portion 3222, so as to further improve the stability of the mounting bracket 322 of the temperature sampling assembly 32 assembled to the bus bar component 22.

[0208] In some embodiments, as shown in Figure 7 and Figure 8 Pressing portions 3224 are protruded on both groove side surfaces 3222c. Correspondingly, the pressing portions 3224 protruded on the two groove side surfaces 3222c respectively press against both sides of the portion of the bus bar component 22 stuck in the second card slot 3222b in the third direction Z.

[0209] Optionally, the number of pressing portions 3224 provided on each groove side surface 3222c can be one or more. Exemplarily, in Figure 7 each groove side surface 3222c protrudes two pressing portions 3224. The two pressing portions 3224 are arranged at intervals in the second direction Y, and the pressing portions 3224 protruded on the two groove side surfaces 3222c are all structures arranged in one-to-one correspondence in the third direction Z. Of course, in other embodiments, the number of pressing portions 3224 protruded on each groove side surface 3222c can also be three, four, five or six, etc.

[0210] In this embodiment, by providing pressing portions 3224 on both groove side surfaces 3222c of the second card slot 3222b, both sides of the portion of the bus bar component 22 stuck in the second card slot 3222b in the third direction Z can be pressed against the pressing portions 3224, which is beneficial to further improve the firmness of the bus bar component 22 stuck in the second card slot 3222b of the mounting portion 3222.

[0211] According to some embodiments of the present application, as shown in Figure 8 the second card slot 3222b further has a groove bottom surface 3222d. The groove bottom surface 3222d connects the two groove side surfaces 3222c. A supporting portion 3225 is protruded on the groove bottom surface 3222d. The supporting portion 3225 is located in the notch 221. The supporting portion 3225 is configured to separate the bus bar component 22 from the groove bottom surface 3222d in the first direction X.

[0212] Among them, the support portion 3225 protruding from the bottom surface 3222d of the second slot 3222b serves to provide abutment for the part of the convergence component 22 stuck in the second slot 3222b in the first direction X, so that the part of the convergence component 22 stuck in the second slot 3222b is spaced apart from the bottom surface 3222d of the second slot 3222b in the first direction X.

[0213] In this embodiment, a support portion 3225 is protruded on the bottom surface 3222d of the second slot 3222b, and the support portion 3225 is located in the notch 221 of the convergence component 22, so that the support portion 3225 can be supported between the portion of the convergence component 22 stuck in the second slot 3222b and the bottom surface 3222d of the second slot 3222b, so that the portion of the convergence component 22 stuck in the second slot 3222b and the bottom surface 3222d of the second slot 3222b are spaced from each other, so as to reduce the temperature transmitted from the convergence component 22 to the mounting portion 3222, thereby further reducing the influence of the temperature on the convergence component 22 on the temperature detection component 321, which is beneficial to improving the precision and accuracy of the temperature detection component 321 in detecting the temperature of the battery cell 21.

[0214] According to some embodiments of the present application, see Figure 12 As shown, the pressing portion 3224 has a pressing surface 3224a that presses against the conduit component 22 in the third direction Z, and the pressing portion 3224 also has two guiding slopes 3224b, which are respectively located on both sides of the pressing surface 3224a in the second direction Y, and the guiding slopes 3224b connect the pressing surface 3224a and the groove side surface 3222c.

[0215] Among them, the pressing surface 3224a of the pressing portion 3224 is the surface of the pressing portion 3224 on the side away from the corresponding groove side 3222c in the third direction Z, and the pressing surface 3224a of the pressing portion 3224 is the surface of the pressing portion 3224 on the third direction Z that presses against the conduit component 22.

[0216] The two guiding slopes 3224b are respectively located on both sides of the pressing surface 3224a in the second direction Y, and the guiding slopes 3224b connect the pressing surface 3224a and the groove side 3222c. That is, one guiding slope 3224b, the pressing surface 3224a and the other guiding slope 3224b are structures arranged in sequence and connected along the second direction Y, and one end of the guiding slope 3224b away from the pressing surface 3224a in the second direction Y is connected to the corresponding groove side 3222c.

[0217] In this embodiment, the pressing portion 3224 has a pressing surface 3224a that presses against the busbar component 22 in the third direction Z. The pressing portion 3224 is further provided with guiding inclined surfaces 3224b that are respectively located on both sides of the pressing surface 3224a in the second direction Y, such that the guiding inclined surfaces 3224b can connect the pressing surface 3224a and the groove side surface 3222c of the second card slot 3222b. Thus, during the process of inserting the busbar component 22 into the second card slot 3222b in the second direction Y, the guiding inclined surfaces 3224b can play a certain guiding role for the busbar component 22, so that the guiding inclined surfaces 3224b can guide the busbar component 22 to a position where it presses against the pressing surface 3224a. Furthermore, it can alleviate the phenomenon that the pressing portion 3224 and the busbar component 22 are stuck to each other, which is beneficial to reducing the difficulty of pressing between the pressing portion 3224 and the busbar component 22, so as to reduce the assembly difficulty between the busbar component 22 and the mounting portion 3222 of the mounting bracket 322.

[0218] Of course, the structure of the mounting bracket 322 is not limited to this. In some embodiments, referring to Figure 13 , Figure 13 FIG. 7 is a front view of the mounting bracket 322 of the temperature sampling assembly 32 provided in some other embodiments of the present application in the second direction Y. The mounting bracket 322 can also be of other structures. For example, the second card slot 3222b has a slot bottom surface 3222d, and a pressing portion 3224 protrudes from the slot bottom surface 3222d. The pressing portion 3224 is located within the notch 221, and the pressing portion 3224 presses against a part of the busbar component 22 that is stuck in the second card slot 3222b in the first direction X.

[0219] Among them, the pressing portion 3224 presses against a part of the busbar component 22 that is stuck in the second card slot 3222b in the first direction X, that is, a part of the busbar component 22 located within the second card slot 3222b presses against the pressing portion 3224 in the first direction X, so that a part of the busbar component 22 located within the second card slot 3222b and the pressing portion 3224 are in an interference fit structure in the first direction X.

[0220] Optionally, in the embodiment where the pressing portion 3224 protrudes from the slot bottom surface 3222d of the second card slot 3222b, the number of the pressing portions 3224 protruding from the slot bottom surface 3222d of the second card slot 3222b can be one or multiple. If there are multiple pressing portions 3224 protruding from the slot bottom surface 3222d of the second card slot 3222b, then the multiple pressing portions 3224 are arranged at intervals in the second direction Y.

[0221] In this embodiment, by protruding a pressing portion 3224 on the bottom surface 3222d of the second card slot 3222b, and the pressing portion 3224 presses against the portion of the busbar component 22 stuck in the second card slot 3222b along the first direction X, a structure in which the portion of the busbar component 22 stuck in the second card slot 3222b and the mounting portion 3222 are in an interference fit can be realized. Furthermore, it is beneficial to further improve the firmness of the busbar component 22 stuck in the second card slot 3222b of the mounting portion 3222, so as to further improve the stability of the mounting bracket 322 of the temperature sampling component 32 assembled to the busbar component 22.

[0222] According to some embodiments of the present application, the present application further provides an electrical device, and the electrical device includes the battery 100 of any of the above solutions, and the battery 100 is used to provide electrical energy for the electrical device.

[0223] Among them, the electrical device may be any of the foregoing devices or systems that apply the battery 100.

[0224] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0225] The above are only the preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery, characterized in that: include: Multiple battery cells; A busbar component electrically connecting the plurality of battery cells; as well as The temperature sampling assembly includes a temperature detection member and a mounting frame, wherein the temperature detection member is configured to detect the temperature of the battery cell, the mounting frame includes a main body portion and a mounting portion connected to each other, the temperature detection member is arranged on the main body portion, the mounting portion is connected to the confluence component, and the thermal conductivity of the material of the mounting portion is less than the thermal conductivity of the material of the main body portion.

2. The battery according to claim 1, characterized in that The main body is directly or indirectly in contact with the battery cell.

3. The battery according to claim 2, characterized in that A heat-conducting pad is disposed on one side of the main body facing the battery cell, and the heat-conducting pad abuts against the battery cell.

4. The battery according to claim 2, characterized in that The battery cell comprises a housing, an electrode assembly and an electrode terminal, wherein the electrode assembly is accommodated in the housing, the electrode terminal is disposed on the housing, the electrode terminal is electrically connected to the electrode assembly, and the electrode terminal is connected to the current collecting component; Wherein, the main body is directly or indirectly in contact with the shell.

5. The battery according to claim 1, characterized in that The main body and the mounting portion are integrally formed.

6. The battery according to claim 1, characterized in that The main body portion and the mounting portion are separately arranged.

7. The battery according to claim 6, characterized in that The main body is clamped with the mounting portion.

8. The battery according to claim 7, characterized in that One of the main body and the mounting portion is provided with a first card slot, and the other is provided with a buckle, and the buckle is engaged with the first card slot.

9. The battery according to claim 8, characterized in that The main body and the mounting portion are arranged along a first direction, and the mounting portion is provided with two buckles protruding from one side of the first direction facing the main body, and the two buckles are arranged at intervals along a third direction, and the first card slots are provided on the surfaces of both sides of the main body in the third direction, and each of the first card slots is engaged with a buckle, and the third direction is perpendicular to the first direction.

10. The battery according to claim 1, characterized in that The thermal conductivity of the material of the main body is λ1, which satisfies 1.8W / (m·K)≤λ1≤2.5W / (m·K).

11. The battery according to claim 1, characterized in that The thermal conductivity of the material of the mounting portion is λ2, satisfying 0.15W / (m·K)≤λ2≤0.25W / (m·K).

12. The battery according to claim 1, characterized in that An installation cavity with an opening is formed inside the main body, and the temperature detection component is accommodated in the installation cavity.

13. The battery according to claim 12, characterized in that The temperature sampling assembly also includes a sealant, which is filled in the installation cavity and covers the temperature detection component.

14. The battery according to claim 12, characterized in that The temperature sampling assembly also includes a connecting wire, one end of which extends into the installation cavity and is connected to the temperature detection component, and the other end is located outside the installation cavity and is used to be electrically connected to the battery management system.

15. The battery according to claim 12, characterized in that The main body and the mounting portion are arranged along a first direction, and the mounting cavity is formed with the opening at at least one end of the main body along a second direction, and the second direction is perpendicular to the first direction.

16. The battery according to claim 15, characterized in that The installation cavity passes through both ends of the main body along the second direction, so that the openings are formed at both ends of the main body in the second direction.

17. The battery according to claim 1, characterized in that The main body and the flow collecting component are spaced apart from each other.

18. The battery according to any one of claims 1 to 17, characterized in that The mounting portion is engaged with the current collecting component.

19. The battery according to claim 18, characterized in that The mounting portion is provided with a second slot, and a portion of the converging component is locked in the second slot.

20. The battery according to claim 19, characterized in that The main body and the mounting portion are arranged along a first direction, and the mounting portion is provided with the second card slot on a surface of the first direction away from the main body, the second card slot passes through both ends of the mounting portion along a second direction, and the second direction is perpendicular to the first direction.

21. The battery according to claim 20, characterized in that A notch is provided at one end of the confluence component in the second direction, and the notch penetrates both sides of the confluence component along the third direction. The mounting frame is inserted into the notch along the second direction, and part of the confluence component is clamped in the second clamping groove. The first direction, the second direction and the third direction are perpendicular to each other.

22. The battery according to claim 21, characterized in that The mounting frame includes two mounting parts, which are respectively connected to two sides of the main body in the first direction, and the second slots are provided on surfaces of the two mounting parts on a side away from the main body in the first direction.

23. The battery according to claim 22, characterized in that Along the second direction, the main body and the flow collecting component are spaced apart from each other.

24. The battery according to claim 21, characterized in that The second card slot has two slot side surfaces arranged opposite to each other in the third direction, and at least one of the slot side surfaces is convexly provided with a pressing portion; Wherein, along the third direction, the pressing portion is located at one side of the flow collecting component, and the pressing portion presses against a portion of the flow collecting component that is stuck in the second slot.

25. The battery according to claim 24, characterized in that The pressing parts are convexly arranged on the two groove side surfaces.

26. The battery according to claim 24, characterized in that The second slot also has a slot bottom surface, the slot bottom surface connects the two slot side surfaces, a support portion is protruded from the slot bottom surface, the support portion is located in the notch, and the support portion is configured to separate the conduit component and the slot bottom surface along the first direction.

27. The battery according to claim 24, characterized in that The pressing portion has a pressing surface that presses against the flow collecting component in the third direction; The pressing portion further has two guiding inclined surfaces, which are respectively located on both sides of the pressing surface in the second direction, and the guiding inclined surfaces connect the pressing surface and the groove side surface.

28. The battery according to claim 21, characterized in that The second slot has a slot bottom surface, a pressing portion is convexly provided on the slot bottom surface, the pressing portion is located in the notch, and the pressing portion presses against a portion of the converging component stuck in the second slot along the first direction.

29. An electrical device, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 28, wherein the battery is used to provide electrical energy.

Images