Battery devices and electrical appliances

Abstract

This application provides a battery device and an electrical device, belonging to the field of battery technology. The battery device includes a battery cell assembly and a temperature sampling assembly. The battery cell assembly includes a fixing member and multiple battery cells. The fixing member is disposed on one side of the multiple battery cells in a first direction and has a first latch. The temperature sampling assembly includes a mounting bracket, a temperature sensing element, a connecting wire, and an elastic component. The temperature sensing element is disposed within the mounting cavity of the mounting bracket and is configured to detect the temperature of the battery cells. The connecting wire is connected to the temperature sensing element. The elastic component is mounted on the mounting bracket, and the first latch abuts against the elastic component along the first direction, thereby pressing the mounting bracket firmly onto the battery cells. This improves the effectiveness of the temperature sensing element in detecting the temperature of the battery cells and reduces the assembly difficulty between the temperature sampling assembly and the first latch while enhancing the assembly stability between them.

Description

Technical Field

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

[0002] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, power batteries, as the power source, play an irreplaceable and crucial role. With the vigorous promotion of new energy vehicles, the demand for power battery products is also increasing. Among them, battery devices, as core components of new energy vehicles, have high requirements in terms of stability and reliability in use.

[0003] In battery devices, temperature sampling components are typically installed to ensure the safety of individual battery cells. These components collect and monitor the temperature of individual battery cells during use, thus providing information about the battery device's performance. However, existing temperature sampling components in battery devices often have poor contact with individual battery cells, leading to inaccurate temperature readings and hindering effective monitoring of the individual cells' performance. This negatively impacts the stability and reliability of the battery device. Summary of the Invention

[0004] This application provides a battery device and an electrical device that can effectively improve the stability and reliability of the battery device.

[0005] In a first aspect, embodiments of this application provide a battery device, including a battery cell assembly and a temperature sampling assembly; the battery cell assembly includes a fixing member and a plurality of battery cells, the fixing member being disposed on one side of the plurality of battery cells in a first direction, and the fixing member being provided with a first buckle; the temperature sampling assembly includes a mounting frame, a temperature detection element, and a connecting wire, the mounting frame having an internal mounting cavity, the temperature detection element being disposed within the mounting cavity, the temperature detection element being configured to detect the temperature of the battery cells, one end of the connecting wire being connected to the temperature detection element, and the other end being located outside the mounting cavity and used for electrical connection with a battery management system; wherein, the temperature sampling assembly further includes an elastic component, the elastic component being mounted on the mounting frame, and the first buckle abutting against the elastic component along the first direction, so as to press the mounting frame onto the battery cells by the elastic component.

[0006] In the above technical solution, the fixing component of the battery cell assembly is provided with a first buckle for assembling and fixing the mounting bracket. By setting an elastic component on the mounting bracket, and the first buckle being a structure that indirectly presses down on the mounting bracket and clamps it onto the battery cell through the elastic component, the temperature sampling component can be assembled and fastened onto the battery cell assembly, while the temperature detection component inside the mounting cavity of the mounting bracket can detect the temperature of the battery cell. This temperature sampling component structure allows the first buckle to continuously apply a force along the first direction towards the battery cell during use through the elastic component, thereby improving the contact effect between the mounting bracket and the battery cell during use. The temperature on the battery cell can be better transferred to the mounting cavity, thereby improving the accuracy of the temperature detection of the battery cell and effectively obtaining the usage status of the battery cell inside the battery device. This is beneficial to improving the stability and reliability of the battery device. On the other hand, since the mounting bracket is installed by the first buckle abutting against the elastic component, the elastic component can absorb the assembly tolerance or assembly error of the first buckle and the mounting bracket in the first direction. This helps to reduce the assembly difficulty between the temperature sampling component and the first buckle while improving the assembly stability between the temperature sampling component and the first buckle.

[0007] In some embodiments, the elastic component includes a spring sheet mounted on the mounting bracket, and the first snap abuts against the spring sheet along the first direction.

[0008] In the above technical solution, by setting the elastic component to include at least a spring piece mounted on the mounting bracket, and the first buckle being a structure that abuts against the spring piece along the first direction, the first buckle is a structure that continuously applies a force to the mounting bracket along the first direction towards the battery cell through the spring piece of the elastic component, and the first buckle is a structure that presses down on the mounting bracket and limits the assembly through the spring piece. The structure is simple and easy to implement and assemble.

[0009] In some embodiments, the spring is bent to form a first abutment portion, a bent portion, and a second abutment portion. Along the first direction, the first abutment portion and the second abutment portion are spaced apart, and the first abutment portion abuts against the first buckle, the second abutment portion abuts against the mounting bracket, the bent portion is connected to the first abutment portion and the second abutment portion at its two ends in its extension direction, and the bent portion is mounted on the mounting bracket.

[0010] In the above technical solution, by setting the spring sheet to be bent into a first abutment portion, a bent portion, and a second abutment portion connected in sequence, and the first abutment portion and the second abutment portion being spaced apart in a first direction and abutting against the first buckle and the mounting bracket respectively, and the bent portion being mounted on the mounting bracket, the spring sheet is bent into a "C"-shaped structure, with the area of ​​the spring sheet near the middle mounted on the mounting bracket, and the areas of the spring sheet near both ends abutting against the first buckle and the mounting bracket respectively. The spring sheet with this structure can reduce the assembly difficulty between the spring sheet and the mounting bracket and between the spring sheet and the first buckle. On the other hand, when the first abutment portion is pressed down by the first buckle, the elastic force generated by the spring sheet can be better transmitted to the mounting bracket through the bent portion and the second abutment portion. It can also enable the first buckle to press down on more positions of the mounting bracket through the spring sheet, which is beneficial to improve the stability of the first buckle pressing the mounting bracket onto the battery cell through the spring sheet, thereby improving the assembly stability between the temperature sampling component and the first buckle.

[0011] In some embodiments, the bending portion includes a first straight section, a first arc-shaped section, and a second straight section connected in sequence. The first straight section is connected to the first abutting portion, the second straight section is connected to the second abutting portion, and the second straight section is mounted on the mounting bracket.

[0012] In the above technical solution, by setting the first straight section of the bent portion to be connected to the first abutting portion, and setting the second straight section of the bent portion to be connected to the second abutting portion, both the first abutting portion and the second abutting portion are connected to the straight part of the bent portion, which helps to reduce the molding difficulty of the spring piece. In addition, by setting the second straight section of the bent portion to be mounted on the mounting frame, the straight part of the bent portion is assembled with the mounting frame, thereby reducing the assembly difficulty between the bent portion and the mounting frame and increasing the contact area between the bent portion and the mounting frame, so as to improve the stability of the spring piece mounted on the mounting frame.

[0013] In some embodiments, the mounting bracket includes a base and an extension connected to each other, the extension being obliquely disposed on the base, and at least a portion of the mounting cavity being located within the extension; wherein, the second abutting portion abuts against the base along the first direction, the second straight segment is mounted on the extension, and the extension direction of the second straight segment is parallel to the extension direction of the extension.

[0014] In the above technical solution, the mounting bracket is provided with an interconnected base and an extension, and the extension is inclinedly set on the base. By setting the second abutting part of the spring piece to abut against the base in the first direction, the first buckle can continuously press down on the base of the mounting bracket in the first direction during use, thereby improving the contact effect between the mounting bracket and the battery cell during use. This allows the temperature on the battery cell to be better transferred to the mounting cavity, which is beneficial to improving the accuracy of the temperature detection of the battery cell by the temperature detection device. In addition, the second straight section of the bent part is installed on the extension of the mounting bracket. By setting the extension direction of the second straight section of the bent part to be parallel to the extension direction of the extension, it is beneficial to further reduce the assembly difficulty between the second straight section of the bent part and the mounting bracket, and to further increase the contact area between the second straight section of the bent part and the mounting bracket, thereby further improving the stability of the spring piece installed on the mounting bracket.

[0015] In some embodiments, the second straight segment is provided with reinforcing ribs, and the extending direction of the reinforcing ribs is parallel to the extending direction of the second straight segment.

[0016] In the above technical solution, by setting reinforcing ribs extending along the extension direction of the second straight section, the structural strength and bending strength of the second straight section are improved, thereby effectively reducing bending or deformation of the second straight section during use, and further improving the structural stability of the second straight section installed on the mounting frame.

[0017] In some embodiments, the spring sheet further includes two clamping portions connected to both ends of the bent portion in a second direction, and the two clamping portions are respectively located on both sides of the mounting frame in the second direction. The two clamping portions are configured to cooperate in clamping the mounting frame. The width direction of the bent portion is parallel to the second direction, and the second direction is perpendicular to the first direction.

[0018] In the above technical solution, the bent part is connected to clamping parts at both ends in the width direction, and the two clamping parts are located on both sides of the mounting frame in the second direction and cooperate to clamp the mounting frame, so as to install the bent part of the spring piece on the mounting frame. On the one hand, the structure is simple and easy to implement and assemble. On the other hand, the two clamping parts can also play a certain limiting role in the second direction, which helps to reduce the phenomenon of shaking of the bent part in the second direction during use, thereby improving the stability of the bent part installed on the mounting frame.

[0019] In some embodiments, the clamping part is provided with an assembly hole, the mounting bracket is provided with a snap-fit ​​part, and the snap-fit ​​part is inserted into the assembly hole.

[0020] In the above technical solution, by setting an assembly hole on the clamping part and setting a corresponding snap-fit ​​part on the mounting frame, the snap-fit ​​part can be inserted into the assembly hole, which is conducive to achieving quick positioning and stable connection between the mounting frame and the clamping part, thereby further improving the stability of the bent part installed on the mounting frame. Moreover, the structure is simple in design and easy to assemble. It can achieve reliable fixation between the mounting frame and the clamping part without additional fasteners, which helps to reduce the difficulty of installing the bent part on the mounting frame.

[0021] In some embodiments, the mounting bracket is provided with a first limiting part and a second limiting part, the first limiting part and the second limiting part are arranged at intervals along a third direction, and the clamping part is disposed between the first limiting part and the second limiting part in the third direction, the first direction, the second direction and the third direction are perpendicular to each other.

[0022] In the above technical solution, by setting a first limiting part and a second limiting part arranged at intervals along a third direction on the mounting frame, and setting the clamping part between the first limiting part and the second limiting part in the third direction, the clamping part can be positioned and limited at both ends in the third direction. On the one hand, it can improve the rapid positioning and assembly accuracy between the clamping part and the mounting frame, thereby improving the assembly quality between the clamping part and the mounting frame. On the other hand, it can effectively alleviate the phenomenon of the clamping part shaking or moving along the third direction during use, which is conducive to further improving the stability of the bent part installed on the mounting frame.

[0023] In some embodiments, the elastic component further includes a guide member that is telescopically disposed between the first abutment portion and the mounting bracket along the first direction, and the two ends of the guide member abutting the first abutment portion and the mounting bracket respectively in the first direction.

[0024] In the above technical solution, by providing a retractable guide in the first direction between the first abutting part and the mounting bracket, and with the two ends of the guide in the first direction abutting the first abutting part and the mounting bracket respectively, the guide can play a certain guiding role when the first buckle presses down on the first abutting part in the first direction, so that the spring piece can be better compressed and deformed in the first direction, thereby improving the stability of the first buckle pressing down on the mounting bracket through the spring piece.

[0025] In some embodiments, the guide includes a first guide portion, a second guide portion, and a first elastic member. One end of the first guide portion in the first direction abuts against the mounting bracket. The second guide portion is movably disposed on the first guide portion in the first direction, and one end of the second guide portion away from the mounting bracket in the first direction abuts against the first abutting portion. The two ends of the first elastic member in the first direction abut against the first guide portion and the second guide portion, respectively.

[0026] In the above technical solution, the first guide portion and the second guide portion of the guide member abut against the first abutment portion and the mounting bracket, respectively, and the second guide portion is movably disposed on the first guide portion along the first direction, so as to realize that the guide member is a structure that can extend and retract along the first direction. In this way, by setting a first elastic member between the first guide portion and the second guide portion, and the two ends of the first elastic member in the first direction abut against the first guide portion and the second guide portion, the guide member as a whole is an elastic telescopic structure that can extend and retract along the first direction. On the one hand, the force of the first buckle pressing down on the first abutment portion can also be directly transmitted to the mounting bracket along the first direction through the guide member, which is conducive to further improving the effect and stability of the first buckle pressing the mounting bracket onto the battery cell through the elastic component. On the other hand, when the first buckle presses down on the spring piece, the guide member can also distribute part of the force on the spring piece, which is conducive to reducing the downward pressure on the spring piece and improving the service life of the spring piece.

[0027] In some embodiments, the first guide portion has a cavity inside, the second guide portion is movably inserted into the cavity at one end away from the first abutment portion in the first direction, and the first elastic member is disposed in the cavity.

[0028] In the above technical solution, by providing a cavity inside the first guide portion for the insertion of the second guide portion, and with the first elastic element disposed within the cavity and abutting between the first and second guide portions, the guide portion with this structure not only enables the second guide portion to be movably disposed within the first guide portion along the first direction, but also improves the stability and reliability of the second guide portion's movement relative to the first guide portion along the first direction, thereby enhancing the guiding accuracy and telescopic stability of the guide portion. On the other hand, it reduces the difficulty of assembling the first elastic element between the first and second guide portions. Simultaneously, the cavity also provides a certain degree of protection for the first elastic element, reducing the occurrence of impacts or wear during use, which is beneficial for extending the service life of the first elastic element. Furthermore, it enhances the stability of the first elastic element when compressed along the first direction within the cavity, thereby ensuring a stable elastic force output and improving the operational stability of the first elastic element.

[0029] In some embodiments, the second abutting portion is provided with a first through hole, and the first guide portion passes through the first through hole along the first direction.

[0030] In the above technical solution, by providing a first through hole on the second abutment portion and having the first guide portion pass through the first through hole along the first direction, the second abutment portion of the spring piece is sleeved on the outside of the first guide portion, which is beneficial to further improve the structural stability of the spring piece and the guide member being assembled together, and is also beneficial to further improve the stability of the first guide portion abutting against the mounting bracket along the first direction.

[0031] In some embodiments, a third limiting portion is provided on the outer peripheral surface of the first guide portion, and the third limiting portion abuts against the side of the second abutting portion away from the first abutting portion in the first direction.

[0032] In the above technical solution, by providing a third limiting part protruding on the outer peripheral surface of the first guide part, and the third limiting part being abutting against the side of the second abutting part away from the first abutting part in the first direction, the third limiting part can also play a certain limiting role on the first guide part in the first direction. On the one hand, it can alleviate the phenomenon that the first guide part is disengaged from the first through hole in the direction away from the mounting bracket along the first direction. On the other hand, it can enable the second abutting part to better achieve the first guide part abutting against the mounting bracket through the third limiting part.

[0033] In some embodiments, the first abutting portion is bent to form a third straight segment, a second arc segment, and a fourth straight segment connected in sequence. The third straight segment is connected to the bent portion, and the fourth straight segment is located on the side of the third straight segment facing the second abutting portion in the first direction. In this embodiment, along the first direction, the third straight segment abuts against the first buckle, and the end of the second guide portion away from the mounting bracket abuts against the fourth straight segment.

[0034] In the above technical solution, by setting the first abutting part to be bent to form a third straight section, a second arc-shaped section and a fourth straight section connected in sequence, and setting the third straight section and the fourth straight section to be arranged along the first direction and respectively abutting the first buckle and the second guide part, the first abutting part abuts between the first buckle and the second guide part in the first direction. The spring with this structure can improve the overall structural strength of the first abutting part, and the second arc-shaped section can also realize stress relief to reduce the phenomenon of local stress concentration in the first abutting part, thereby enhancing the durability and fatigue resistance of the first abutting part. On the other hand, it can realize that the first abutting part is a straight part that abuts against the first buckle and the second guide part, which helps to reduce the difficulty of the first abutting part abutting between the first buckle and the second guide part in the first direction, and also helps to improve the stability of the first abutting part abutting between the first buckle and the second guide part.

[0035] In some embodiments, the fourth straight section is provided with a second through hole, and along the first direction, the second guide portion abuts against one end of the fourth straight section and is provided with a plug-in portion, which is inserted into the second through hole.

[0036] In the above technical solution, by providing a second through hole on the fourth straight section of the first abutting part, and providing an insertion part protruding from one end of the second guide part that abuts the fourth straight section and inserting it into the second through hole along the first direction, the stability of the abutting between the second guide part and the fourth straight section of the first abutting part can be further improved, which helps to reduce the risk of the second guide part and the fourth straight section of the first abutting part separating from each other during use.

[0037] In some embodiments, the mounting bracket has an abutment surface, and along the first direction, one end of the guide member away from the first abutment portion abuts against the abutment surface; wherein, the abutment surface is provided with two fourth limiting portions, the two fourth limiting portions are spaced apart along a second direction, the guide member is located between the two fourth limiting portions in the second direction, and the second abutment portion abuts against the two fourth limiting portions along the first direction, the width direction of the bent portion is parallel to the second direction, and the second direction is perpendicular to the first direction.

[0038] In the above technical solution, by providing two fourth limiting parts arranged at intervals along the second direction on the abutting surface of the mounting bracket for the guide member to abut, and with the guide member located between the two fourth limiting parts in the second direction, the two fourth limiting parts can play a certain positioning and limiting role for the guide member in the second direction. This is beneficial to improving the assembly accuracy between the guide member and the mounting bracket, and further improving the stability of the guide member abutting on the mounting bracket, so as to reduce the phenomenon of the guide member sliding or detaching from the mounting bracket along the second direction. In addition, by setting the second abutting part of the spring piece to abut against the two fourth limiting parts along the first direction, the second abutting part of the spring piece is a structure that abuts against the mounting bracket through the fourth limiting parts, which is beneficial to reducing the difficulty of assembling the spring piece and the guide member as a whole on the mounting bracket.

[0039] In some embodiments, the elastic component further includes a second elastic member disposed between the first abutment portion and the second abutment portion along the first direction, and the two ends of the second elastic member abut against the first abutment portion and the second abutment portion, respectively.

[0040] In the above technical solution, by providing a second elastic member between the first abutting part and the second abutting part of the spring piece, and the two ends of the second elastic member in the first direction being respectively abutting the first abutting part and the second abutting part, on the one hand, the force of the first buckle pressing down on the first abutting part can also be directly transmitted to the second abutting part along the first direction through the second elastic member to press the mounting bracket, which is beneficial to further improve the effect and stability of the first buckle pressing the mounting bracket onto the battery cell through the elastic component. On the other hand, when the first buckle presses down on the spring piece, the second elastic member can also share part of the force on the spring piece, which is beneficial to reduce the downward pressure on the spring piece and improve the service life of the spring piece.

[0041] In some embodiments, the elastic component further includes a guide member, which is telescopically disposed between the first abutment portion and the mounting bracket along the first direction, and the two ends of the guide member abut against the first abutment portion and the mounting bracket respectively in the first direction; wherein the second elastic member is sleeved on the outside of the guide member.

[0042] In the above technical solution, by providing a guide member that is retractable in the first direction between the first abutment part and the mounting bracket, and by having the second elastic member sleeved on the outside of the guide member, the guide member can play a certain guiding role when the first buckle presses down on the second elastic member through the first abutment part, so that the second elastic member can be better compressed and deformed in the first direction, thereby improving the stability of the first elastic member and enhancing the effect of the first buckle transmitting force through the second elastic member.

[0043] In some embodiments, the mounting cavity penetrates the mounting bracket at one end near the battery cell in the first direction and forms a first through-hole; wherein, the temperature sampling component further includes a thermally conductive element, the thermally conductive element is connected to the mounting bracket and blocks the first through-hole, and the thermally conductive element abuts against the battery cell along the first direction, the thermal conductivity of the thermally conductive element is greater than the thermal conductivity of the mounting bracket.

[0044] In the above technical solution, the mounting cavity is a structure that penetrates the mounting frame at one end near the battery cell in the first direction and forms a first through-hole. This provides a direct channel for heat conduction between the temperature detection element and the battery cell, reducing the phenomenon of heat transfer delay or attenuation caused by structural obstruction. Furthermore, by connecting a heat-conducting element to the mounting frame to block the first through-hole, the heat-conducting element and the battery cell are in contact with each other along the first direction, and the thermal conductivity of the heat-conducting element is greater than that of the mounting frame. This allows the heat-conducting element to better contact the battery cell under the action of the elastic component. Thus, while the temperature of the battery cell can be better transferred to the mounting cavity through the heat-conducting element, the heat-conducting element can also prevent impurities or foreign objects from entering the mounting cavity and contaminating or damaging the temperature detection element. This not only further improves the accuracy of the temperature detection element in detecting the temperature of the battery cell, but also further improves the service life and reliability of the temperature detection element.

[0045] In some embodiments, the thermal conductivity of the heat-conducting element is 80 W / (m·K)-500 W / (m·K).

[0046] In the above technical solution, on the one hand, the thermal conductivity of the heat-conducting component is set to be greater than or equal to 80W / (m·K) to improve the thermal conductivity of the heat-conducting component, thereby better transferring the temperature on the battery cell to the mounting cavity of the mounting bracket for temperature detection, further improving the effect and accuracy of the temperature detection of the battery cell temperature, and thus effectively obtaining the usage status of the battery cell inside the battery device during use. On the other hand, the thermal conductivity of the heat-conducting component is set to be less than or equal to 500W / (m·K) to reduce the excessive waste of the thermal conductivity of the heat-conducting component, which is conducive to reducing the manufacturing cost of the heat-conducting component.

[0047] In some embodiments, the side of the heat-conducting element facing the mounting cavity is recessed to form a groove, and at least a portion of the temperature sensing element is accommodated within the groove.

[0048] In the above technical solution, by setting a groove on the surface of the heat-conducting component facing the mounting cavity, and the temperature detection component being inserted into the groove, the temperature transferred from the battery cell to the heat-conducting component can be transferred to the temperature detection component from multiple directions through the groove wall surface. This helps to increase the heat transfer path between the heat-conducting component and the temperature detection component, thereby further improving the effect of temperature transfer from the battery cell to the temperature detection component, and further improving the accuracy of the temperature detection component in detecting the temperature of the battery cell.

[0049] In some embodiments, the temperature sampling assembly further includes a thermally conductive adhesive located within the mounting cavity and covering the outside of the temperature sensing element, and the thermally conductive adhesive is connected to the thermally conductive element.

[0050] In the above technical solution, by placing thermally conductive adhesive inside the mounting cavity, and having the adhesive cover the outside of the temperature sensing element and connect it to the thermally conductive element, the thermally conductive adhesive reduces the air gap between the temperature sensing element and the thermally conductive element, thereby lowering the contact thermal resistance and enhancing the heat transfer efficiency between them. This allows the temperature on the battery cell to be better transferred to the temperature sensing element through the thermally conductive element, further improving the accuracy of the temperature sensing element in detecting the battery cell temperature. Furthermore, the thermally conductive adhesive also provides some fixation and cushioning for the temperature sensing element within the mounting cavity, reducing the risk of impacts or scratches during use, thus improving the lifespan and stability of the temperature sensing element.

[0051] In some embodiments, the temperature sampling assembly further includes an insulating adhesive that covers the outside of the temperature sensing element, and the thermally conductive adhesive that covers the outside of the insulating adhesive.

[0052] In the above technical solution, by covering the outside of the temperature sensing element with insulating adhesive, and the thermally conductive adhesive being a structure covering the outside of the insulating adhesive, it is possible to achieve good heat transfer between the thermally conductive adhesive and the temperature sensing element, while also sealing and insulating the temperature sensing element. This helps reduce the risk of short circuit between the temperature sensing element and the thermally conductive element during use, and also helps reduce the corrosion of the temperature sensing element by moisture and other factors, thereby improving the reliability and service life of the temperature sensing element.

[0053] In some embodiments, the mounting cavity extends through the mounting bracket and forms a second through opening opposite to the first through opening, the connecting wire passes through the second through opening and extends into the mounting cavity; wherein, the temperature sampling component further includes a sealant, the sealant is disposed in the mounting cavity and located between the second through opening and the thermally conductive adhesive, and the sealant covers the outside of the connecting wire.

[0054] In the above technical solution, the mounting cavity is configured to penetrate the mounting frame and form a second through-hole opposite to the first through-hole. The connecting wire passes through the second through-hole and extends into the mounting cavity to connect with the temperature sensing element. This reduces the assembly difficulty between the connecting wire and the temperature sensing element, as well as between the connecting wire and the mounting frame. Furthermore, by providing sealant in the mounting cavity, with the sealant located between the second through-hole and the thermally conductive adhesive and covering the outside of the connecting wire, the sealant can also seal the area of ​​the mounting cavity between the thermally conductive adhesive and the second through-hole. This helps reduce the phenomenon of moisture or impurities entering the mounting cavity and corroding or contaminating the temperature sensing element and the thermally conductive adhesive, thereby further improving the reliability and service life of the temperature sampling component.

[0055] In some embodiments, the temperature sampling assembly further includes an insulating adhesive that covers the outside of the temperature sensing element.

[0056] In the above technical solution, by covering the outside of the temperature detection element with insulating glue, the insulating glue can seal and insulate the temperature detection element, which helps to reduce the risk of short circuit between the temperature detection element and other components during use, and also helps to reduce the corrosion of the temperature detection element by moisture or impurities, thereby improving the reliability and service life of the temperature detection element.

[0057] In some embodiments, the connecting wire includes a conductor and an insulator, a portion of the conductor being located within the insulator and a portion of the conductor extending beyond the outside of the insulator and connected to the temperature sensing element; wherein the insulating adhesive covers the outside of the portion of the conductor extending beyond the insulator.

[0058] In the above technical solution, the connecting wire includes a conductor and an insulator covering the conductor. By setting the part of the conductor to extend out of the outside of the insulator and connect it to the temperature sensing element, the difficulty of electrically connecting the connecting wire and the temperature sensing element is reduced. In addition, by setting the insulating adhesive to also cover the outside of the part of the conductor extending out of the insulator, the insulating adhesive can not only act as a sealant and insulator for the temperature sensing element, but also insulate the part where the conductor is connected to the temperature sensing element, thereby reducing the risk of short circuit between the conductor and other components and further improving the reliability of the temperature sampling component.

[0059] In some embodiments, the fastener is further provided with a second latch, the second latch and the first latch are arranged at intervals, the second latch abuts against the mounting bracket along the first direction, and the second latch and the first latch are configured to cooperate to restrict the mounting bracket from disengaging from the battery cell assembly along the first direction away from the battery cell.

[0060] In the above technical solution, by setting a second buckle on the fixing component at a distance from the first buckle, the second buckle abuts against the mounting frame along the first direction, and the second buckle and the first buckle play a role in cooperating to assemble the mounting frame, so that the first buckle and the second buckle can press down and limit different areas of the mounting frame, thereby further improving the structural stability of the temperature sampling component installed on the fixing component.

[0061] In some embodiments, the battery cell includes a housing, an electrode assembly, and electrode terminals, the electrode assembly being housed within the housing, and the electrode terminals being disposed at one end of the housing in the first direction; wherein the battery cell assembly further includes a busbar, the busbar being located on one side of the battery cell in the first direction and electrically connected to the electrode terminals, and at least a portion of the fixing member being disposed between the busbar and the housing in the first direction.

[0062] In the above technical solution, by setting at least a portion of the fastener with the first buckle as a structure located between the busbar component and the housing of the battery cell in the first direction, the busbar component and the housing can also limit the fastener in the first direction, which is beneficial to improving the assembly stability of the fastener, so as to further improve the effect of the first buckle pressing the mounting bracket onto the battery cell through the elastic component.

[0063] In some embodiments, the fastener is made of an insulating material and is configured to insulatingly isolate the busbar and the housing.

[0064] In the above technical solution, by setting the fastener as an insulating material, the fastener can not only provide assembly requirements for the temperature sampling component, but also play an insulating role between the busbar component and the battery cell casing. This allows the temperature sampling component to be assembled on the battery cell assembly, while reducing the risk of short circuit between the busbar component and the battery cell casing.

[0065] Secondly, embodiments of this application also provide an electrical device, including the battery device described above, wherein the battery device is used to provide electrical energy. Attached Figure Description

[0066] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0067] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0068] Figure 2 Exploded views of the structure of the battery device provided in some embodiments of this application;

[0069] Figure 3 This is an assembly diagram of a battery cell assembly and a sampling assembly provided in some embodiments of this application;

[0070] Figure 4 This is a schematic diagram illustrating the assembly of the temperature sampling component and the first buckle according to some embodiments of this application;

[0071] Figure 5 This is a schematic diagram of the structure of a temperature sampling component provided in some embodiments of this application;

[0072] Figure 6 Exploded views of the structure of a temperature sampling component provided in some embodiments of this application;

[0073] Figure 7 A cross-sectional view of a temperature sampling assembly provided in some embodiments of this application;

[0074] Figure 8 This is a partial structural schematic diagram of a temperature sampling component provided in some embodiments of this application;

[0075] Figure 9 A partial cross-sectional view of a temperature sampling assembly provided in some embodiments of this application;

[0076] Figure 10 This is a schematic diagram of the structure of the elastic component of the temperature sampling component provided in some embodiments of this application;

[0077] Figure 11 Exploded view of the structure of the elastic component of the temperature sampling assembly provided in some embodiments of this application;

[0078] Figure 12 A schematic diagram of the elastic element of the temperature sampling component provided in some embodiments of this application;

[0079] Figure 13 A schematic diagram of the mounting bracket for the temperature sampling assembly provided in some embodiments of this application;

[0080] Figure 14 A cross-sectional view of the guide of the elastic component of the temperature sampling assembly provided in some embodiments of this application;

[0081] Figure 15 A schematic diagram of the structure of the first guide portion of the guide member of the elastic component provided in some embodiments of this application;

[0082] Figure 16 A schematic diagram of the structure of the second guide portion of the guide member of the elastic component provided in some embodiments of this application;

[0083] Figure 17 This is a schematic diagram of the structure of the heat-conducting component of the temperature sampling assembly provided in some embodiments of this application;

[0084] Figure 18 This is an assembly diagram of the temperature sensing element and connecting wire of the temperature sampling component provided in some embodiments of this application.

[0085] Icons: 1000 - Vehicle; 100 - Battery Unit; 10 - Housing; 11 - First Housing Body; 12 - Second Housing Body; 20 - Battery Cell Assembly; 21 - Busbar Component; 22 - Battery Cell; 23 - Separator; 24 - Fixing Component; 241 - First Buckle; 2411 - First Main Body; 2412 - First Pressing Part; 2413 - Third Guide Part; 242 - Second Buckle; 2421 - Second Main Body; 2422 - Second Pressing Part; 30 - Sampling Assembly; 31 - Temperature Sampling Component; 311 - Mounting Bracket; 311a - Mounting cavity; 311b - First through-hole; 311c - Second through-hole; 3111 - Base; 3111a - Abutting surface; 3112 - Extension; 3113 - Snap-fitting part; 3114 - First limiting part; 3115 - Second limiting part; 3116 - Fourth limiting part; 312 - Temperature sensing element; 3121 - Body part; 3122 - Terminal block; 313 - Connecting wire; 3131 - Conductor; 3132 - Insulator; 314 - Elastic component; 3141 - Spring; 31411 - First abutting part; 31411a - Third straight section 31411b - Second arc-shaped segment; 31411c - Fourth straight segment; 31411d - Second through hole; 31412 - Bending part; 31412a - First straight segment; 31412b - First arc-shaped segment; 31412c - Second straight segment; 31412d - Reinforcing rib; 31413 - Second abutment part; 31413a - First through hole; 31414 - Clamping part; 31414a - Assembly hole; 3142 - Guide; 31421 - First guide part; 31421a - Cavity; 31421b - Third through hole; 3 1421c - First cavity wall; 31421d - Second cavity wall; 31421e - Third limiting part; 31422 - Second guide part; 31422a - Fifth limiting part; 31422b - Insertion part; 31423 - First elastic element; 3143 - Second elastic element; 315 - Thermal conductive element; 3151 - Snap protrusion; 3152 - Groove; 316 - Thermally conductive adhesive; 317 - Insulating adhesive; 318 - Sealant; 32 - Wiring harness assembly; 200 - Controller; 300 - Motor; X - First direction; Y - Second direction; Z - Third direction. Detailed Implementation

[0086] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0087] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0088] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0089] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0090] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0091] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0092] In this application, "multiple" means two or more (including two).

[0093] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0094] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0095] A single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, serves to prevent short circuits to some extent while allowing active ions to pass through.

[0096] In some embodiments, the positive electrode may be a positive electrode sheet, which may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0097] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0098] In some embodiments, the electrode assembly further includes an isolator disposed between the positive and negative electrodes.

[0099] In some embodiments, the separator is a separator membrane. The separator membrane can be of various types, and any known porous separator membrane with good chemical and mechanical stability can be selected.

[0100] In some implementations, the electrode assembly is a wound structure. The positive and negative electrode sheets are wound into a wound structure.

[0101] In some implementations, the electrode assembly is a stacked structure.

[0102] In some embodiments, the electrode assembly can be cylindrical, flat, or polygonal, etc.

[0103] In some embodiments, the electrode assembly is provided with tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0104] In some embodiments, the battery cell also includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. The electrolyte can be liquid, gel-like, or solid. Liquid electrolytes include electrolyte salts and solvents.

[0105] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as electrode assemblies and electrolytes. The housing may be made of steel, aluminum, plastic (such as polypropylene), composite metal (such as copper-aluminum composite), or aluminum-plastic film, etc.

[0106] As an example, a battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include, but are not limited to, square battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries.

[0107] The battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0108] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells into a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0109] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0110] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0111] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0112] As an example, the enclosure may include a first enclosure body and a second enclosure body. The first enclosure body and the second enclosure body are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, which can be either sealed or unsealed. The first enclosure body may be a top cover or a bottom plate.

[0113] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0114] As an example, the housing can be part of the vehicle's chassis structure. For instance, the housing's roof can be at least part of the vehicle's floor, or the housing's frame can be at least part of the vehicle's crossbeams and longitudinal beams.

[0115] In some embodiments, the battery device refers to an energy storage device, which includes a housing with a door on at least one side. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0116] Battery devices possess outstanding advantages such as high energy density, low environmental pollution, high power density, long service life, wide applicability, and low self-discharge coefficient, making them an important component of today's new energy development. The development of battery technology must simultaneously consider multiple design factors, such as performance parameters like energy density, cycle life, discharge capacity, and charge / discharge rate. Furthermore, the reliability of the battery device must also be taken into account.

[0117] For a typical battery pack, it includes a housing and multiple battery cells housed within the housing. These battery cells are electrically connected via a busbar to achieve series or parallel connection. In related technologies, to ensure the safety of the battery cells, a temperature sampling component is typically installed within the battery pack. This component collects and monitors the temperature of the battery cells during use, thus providing information on the battery pack's operating status. The temperature sampling component usually includes a temperature sensor and a mounting bracket for mounting the sensor. The mounting bracket is typically mounted on the busbar or wiring harness isolation plate of the battery pack, and it contacts the battery cells, allowing the cells housed within the bracket to pass through. The internal temperature sensor can detect the temperature of individual battery cells. However, the temperature sensor of this type of battery device is indirectly in contact with the battery cells through a mounting bracket. Due to assembly tolerances or errors, the stability of the mounting bracket on the busbar or wiring harness isolation plate of the battery device is not high. On the other hand, the contact effect between the mounting bracket and the battery cells is also prone to be poor. This makes it easy for the temperature transmitted from the battery cells to the temperature sensor through the mounting bracket to be distorted. As a result, the temperature sensor detects the temperature of the battery cells inaccurately, and thus cannot effectively obtain the usage status of the battery cells inside the battery device. This is not conducive to improving the stability and reliability of the battery device.

[0118] Based on the above considerations, in order to address the problem of low stability and reliability in the use of battery devices, this application provides a battery device including a battery cell assembly and a temperature sampling assembly. The battery cell assembly includes a fixing member and multiple battery cells. The fixing member is disposed on one side of the multiple battery cells in a first direction and is provided with a first latch. The temperature sampling assembly includes a mounting frame, a temperature detection element, and a connecting wire. The mounting frame has an internal mounting cavity, and the temperature detection element is disposed within the mounting cavity. The temperature detection element is configured to detect the temperature of the battery cells. One end of the connecting wire is connected to the temperature detection element, and the other end is located outside the mounting cavity and used for electrical connection with a battery management system. The temperature sampling assembly also includes an elastic component mounted on the mounting frame. The first latch abuts against the elastic component along the first direction to press the mounting frame firmly onto the battery cells via the elastic component.

[0119] In this battery device structure, the fixing component of the battery cell assembly is provided with a first buckle for mounting a fixing bracket. By setting an elastic component on the mounting bracket, and the first buckle being a structure that indirectly presses down on the mounting bracket and clamps it onto the battery cell through the elastic component, the temperature sampling component can be assembled and secured onto the battery cell assembly, while the temperature detection component inside the mounting cavity of the mounting bracket can detect the temperature of the battery cell. This temperature sampling component structure allows the first buckle to continuously apply a force along a first direction towards the battery cell to the mounting bracket during use, thereby improving the contact efficiency between the mounting bracket and the battery cell during use. This allows the temperature on the battery cell to be better transferred to the mounting cavity, thereby improving the accuracy of the temperature detection of the battery cell and effectively obtaining the usage status of the battery cell inside the battery device. This is beneficial to improving the stability and reliability of the battery device. On the other hand, since the mounting bracket is installed by the first buckle abutting against the elastic component, the elastic component can absorb the assembly tolerance or assembly error of the first buckle and the mounting bracket in the first direction. This helps to reduce the assembly difficulty between the temperature sampling component and the first buckle while improving the assembly stability between the temperature sampling component and the first buckle.

[0120] The battery device disclosed in this application can be used, but is not limited to, in electrical devices such as vehicles, ships, or aircraft. A power system comprising such an electrical device can be constructed using the battery device disclosed in this application. This helps to alleviate the problem of inaccurate temperature detection results of individual battery cells by the temperature sampling component, thereby improving the stability and reliability of the battery device.

[0121] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0122] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device according to an embodiment of this application.

[0123] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000. The battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to supply power to the vehicle 1000; for example, the battery device 100 can serve as the operating power source or general power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 controls the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during startup, navigation, and driving.

[0124] In some embodiments of this application, the battery device 100 can not only serve as the operating power or power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0125] Please refer to Figure 2 and Figure 3 As shown, Figure 2 This is an exploded view of the structure of the battery device 100 provided in some embodiments of this application. Figure 3 This is a schematic diagram of the assembly of a battery cell assembly 20 and a sampling assembly 30 provided in some embodiments of this application. The battery device 100 includes a housing 10 and at least one battery cell assembly 20. The battery cell assembly 20 is housed within the housing 10. The battery cell assembly 20 includes a busbar 21 and a plurality of battery cells 22. The busbar 21 is located on one side of the battery cells 22 in a first direction X, and the busbar 21 is electrically connected to at least two battery cells 22.

[0126] The housing 10 provides assembly space for the battery cell assembly 20, and the housing 10 can adopt various structures. In some embodiments, the housing 10 may include a first housing body 11 and a second housing body 12, which cover each other, and together define an assembly space for accommodating the battery cell assembly 20. The second housing body 12 may be a hollow structure open at one end, and the first housing body 11 may be a plate-like structure, with the first housing body 11 covering the open side of the second housing body 12 so that the first housing body 11 and the second housing body 12 together define the assembly space; alternatively, the first housing body 11 and the second housing body 12 may both be hollow structures open on one side, with the open side of the first housing body 11 covering the open side of the second housing body 12.

[0127] Of course, the box 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. For example, in... Figure 2 In the middle, the shape of box 10 is a cuboid.

[0128] Optionally, in the battery device 100, the battery cell assembly 20 housed within the housing 10 can be one or more. When multiple battery cell assemblies 20 are housed within the housing 10, they can be connected in series, parallel, or a combination thereof. A combination thereof means that multiple battery cell assemblies 20 can be connected in both series and parallel. Multiple battery cell assemblies 20 can be directly connected in series, parallel, or a combination thereof, and then the entire assembly of the multiple battery cell assemblies 20 is housed within the housing 10.

[0129] For example, combined Figure 2 and Figure 3 As shown, the battery device 100 includes two battery cell assemblies 20 arranged in a direction perpendicular to the first direction X, and each battery cell assembly 20 includes a plurality of battery cells 22 stacked together. It should be noted that the stacking direction of the plurality of battery cells 22 in the same battery cell assembly 20 is perpendicular to the first direction X and the arrangement direction of the two battery cell assemblies 20.

[0130] In this embodiment of the application, the battery cell assembly 20 includes a plurality of busbars 21, which are all disposed on the same side of the plurality of battery cells 22 in the first direction X. The busbars 21 are used to connect the plurality of battery cells 22 to realize the electrical connection between the plurality of battery cells 22.

[0131] The battery cell 22 includes a casing, an electrode assembly, and electrode terminals. The electrode assembly is housed within the casing. Two electrode terminals are provided at the end of the casing facing the current collector 21 in the first direction X. The two electrode terminals have opposite polarities and are used for inputting or outputting the positive and negative terminals of the battery cell 22, respectively. The current collector 21 is interconnected with the electrode terminals of the battery cell 22 to electrically connect multiple battery cells 22. It should be noted that the multiple battery cells 22 in the battery cell assembly 20 can be connected in series or in parallel, etc.

[0132] Optionally, each battery cell 22 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 to these. The battery cell 22 can be in the form of a cuboid, cylinder, prism, or other shapes. For example, in... Figure 2 and Figure 3 In the middle, the battery cell 22 has a cuboid structure.

[0133] In some embodiments, see Figure 2 and Figure 3As shown, the battery device 100 may further include a sampling assembly 30, which is disposed within the housing 10. The sampling assembly 30 is used for electrical connection with the battery management system of the battery device 100. The sampling assembly 30 includes a temperature sampling component 31 and a wiring harness assembly 32. The temperature sampling component 31 is configured to detect the temperature of the battery cell 22. The wiring harness assembly 32 is used for electrical connection with the battery management system, and the temperature sampling component 31 is electrically connected to the wiring harness assembly 32 to realize that the temperature sampling component 31 is electrically connected to the battery management system through the wiring harness assembly 32.

[0134] The sampling assembly 30 is set up in a one-to-one correspondence with the battery cell assembly 20, and each battery cell assembly 20 is set up with a sampling assembly 30.

[0135] For example, the sampling assembly 30 is located on the side of the battery cell assembly 20 where the busbar 21 is disposed in the first direction X.

[0136] It should be noted that, in some embodiments, the sampling assembly 30 may further include a voltage sampling component, which is electrically connected to the battery cell and electrically connected to the battery management system via the wiring harness assembly 32 to collect the voltage of the battery cell 22.

[0137] In some embodiments, see Figure 2 and Figure 3 As shown, the battery cell assembly 20 may also include an isolation plate 23. The isolation plate 23 is made of an insulating material and is located between the sampling assembly 30 and the multiple battery cells 22 to insulate and isolate the sampling assembly 30 and the battery cells 22. This helps to reduce the risk of overlap between the sampling assembly 30 and the battery cells 22, thereby mitigating the phenomenon of internal short circuits in the battery device 100 during use and improving the reliability of the battery device 100.

[0138] The separator 23 serves to insulate and isolate the battery cell 22 and the sampling assembly 30. The separator 23 can be made of various materials, such as rubber, silicone, or plastic.

[0139] For example, the busbar component 21 is disposed on the side of the separator 23 away from the battery cell 22, such that the busbar component 21 and the sampling assembly 30 are both located on the side of the separator 23 away from the battery cell 22 in the first direction X. Correspondingly, the separator 23 is provided with a first clearance hole (not shown in the figure). The first clearance hole penetrates the surface of both sides of the separator 23 along the first direction X. Each first clearance hole is used for one electrode terminal of a battery cell 22 to pass through, so that the electrode terminal can be connected to the busbar component 21.

[0140] According to some embodiments of this application, refer to Figure 3 and Figure 4 Please refer to further details. Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, Figure 5 This is a schematic diagram of the structure of the temperature sampling component 31 provided in some embodiments of this application. Figure 6 This is an exploded view of the structure of the temperature sampling component 31 provided in some embodiments of this application. Figure 7 This is a cross-sectional view of the temperature sampling component 31 provided in some embodiments of this application. Figure 8 This is a partial structural schematic diagram of the temperature sampling component 31 provided in some embodiments of this application. Figure 9 This is a partial cross-sectional view of the temperature sampling component 31 provided in some embodiments of this application. Figure 10 This is a schematic diagram of the elastic component 314 of the temperature sampling component 31 provided in some embodiments of this application. This application provides a battery device 100, which includes a battery cell assembly 20 and a temperature sampling component 31. The battery cell assembly 20 includes a fixing member 24 and a plurality of battery cells 22. The fixing member 24 is disposed on one side of the plurality of battery cells 22 in a first direction X, and the fixing member 24 is provided with a first buckle 241. The temperature sampling component 31 includes a mounting frame 311, a temperature detection element 312, and a connecting wire 313. The mounting frame 311 has a mounting cavity 311a inside, and the temperature detection element 312 is disposed within the mounting cavity 311a. The temperature detection element 312 is configured to detect the temperature of the battery cells 22. One end of the connecting wire 313 is connected to the temperature detection element 312, and the other end is located outside the mounting cavity 311a and used for electrical connection with a battery management system. The temperature sampling component 31 also includes an elastic component 314, which is mounted on the mounting bracket 311. The first buckle 241 abuts against the elastic component 314 along the first direction X, so as to press the mounting bracket 311 onto the battery cell 22 through the elastic component 314.

[0141] The fastener 24 is provided with a first buckle 241, which serves to press the temperature sampling component 31 onto the battery cell 22, thereby enabling the temperature sampling component 31 to be assembled onto the battery cell assembly 20. This allows the fastener 24 to provide assembly for the temperature sampling component 31. The fastener 24 can have various structures; it can be the separator 23 in the battery cell assembly 20, or it can be the busbar 21 in the battery cell assembly 20. As an example, in... Figure 3 In the middle, the fixing component 24 is the isolation plate 23 of the battery cell assembly 20.

[0142] In some embodiments, the first buckle 241 is connected to the side of the fastener 24 facing away from the battery cell 22 in the first direction X, and the fastener 24 is provided with a second clearance hole (not shown in the figure) in the area corresponding to the mounting bracket 311. The second clearance hole passes through the fastener 24 in the first direction X, so that the mounting bracket 311 can pass through the second clearance hole and abut against the battery cell 22. Optionally, the mounting bracket 311 can be a structure that directly abuts against the battery cell 22 under the downward pressure of the first buckle 241, or it can be a structure that indirectly abuts against the battery cell 22.

[0143] See Figure 4 As shown, the first latch 241 may include a first main body 2411, a first pressing part 2412, and a third guide part 2413. The first main body 2411 is connected to the fixing member 24. The first pressing part 2412 is connected to the end of the first main body 2411 away from the fixing member 24 in the first direction X. The first pressing part 2412 abuts against the elastic component 314 in the first direction X so as to press the mounting bracket 311 onto the battery cell 22 by the elastic component 314. The third guide part 2413 is connected to the end of the first pressing part 2412 away from the first main body 2411, and the third guide part 2413 is configured to guide the elastic component 314 to abut against the first pressing part 2412 when the temperature sampling component 31 is assembled onto the fixing member 24.

[0144] In this embodiment, the temperature sampling component 31 includes a mounting bracket 311, a temperature detection element 312, and a connecting wire 313. The mounting bracket 311 serves to mount and fix the component on the battery cell assembly 20 and provides assembly space for the temperature detection element 312, so that the mounting bracket 311 can assemble and fix the temperature detection element 312. The temperature detection element 312 serves to detect the temperature of the battery cell 22. Correspondingly, the connecting wire 313 serves to electrically connect the temperature detection element 312 and the wiring harness assembly 32, so that the temperature detection element 312 can be electrically connected to the battery management system through the connecting wire 313 and the wiring harness assembly 32 in sequence, thereby enabling the monitoring and acquisition of the temperature information of the battery cell 22 during use.

[0145] For example, the mounting bracket 311 can be made of various materials, such as polypropylene, polycarbonate, polyphenylene sulfide, or polyhexamethylene terephthalamide.

[0146] For example, the structure of the temperature sensing element 312 can be various. For instance, the temperature sensing element 312 can be a thermistor, such as a semiconductor ceramic with a negative temperature coefficient or a semiconductor ceramic with a positive temperature coefficient.

[0147] The temperature sensing element 312 is housed in the mounting cavity 311a, meaning that the temperature sensing element 312 is a structure disposed inside the mounting bracket 311. Correspondingly, the connecting wire 313 has one end extending into the mounting cavity 311a and connected to the temperature sensing element 312, while the other end is located outside the mounting cavity 311a and electrically connected to the wire harness assembly 32.

[0148] In the embodiments of this application, see Figure 4 , Figure 5 , Figure 8 and Figure 10 As shown, the temperature sampling component 31 also includes an elastic component 314, which is mounted on the mounting bracket 311. Optionally, the structure by which the elastic component 314 is mounted on the mounting bracket 311 can be various, such as snap-fit, adhesive, or bolted connection.

[0149] The first buckle 241 abuts against the elastic component 314 along the first direction X, so as to press the mounting bracket 311 onto the battery cell 22 through the elastic component 314. That is, the first buckle 241 is a structure that presses down on the elastic component 314 of the temperature sampling component 31, so that the first buckle 241 is a structure that transmits the pressing force to the mounting bracket 311 through the elastic component 314 and presses the mounting bracket 311 onto the battery cell 22. In other words, the downward pressure of the first pressing part 2412 of the first buckle 241 acts on the elastic component 314, so that the elastic component 314 can accumulate elastic force, and the elastic force of the elastic component 314 acts on the mounting bracket 311 along the first direction X and presses down on the mounting bracket 311.

[0150] In this embodiment, the fixing member 24 of the battery cell assembly 20 is provided with a first buckle 241 for assembling and fixing the mounting bracket 311. By providing an elastic component 314 on the mounting bracket 311, and the first buckle 241 being a structure that indirectly presses down on the mounting bracket 311 and presses the mounting bracket 311 onto the battery cell 22 through the elastic component 314, the temperature sampling component 311 can be assembled and fastened onto the battery cell assembly 20, while the temperature detection component 312 in the mounting cavity 311a of the mounting bracket 311 can detect the temperature of the battery cell 22. The temperature sampling component 31 with this structure allows the first buckle 241 to continuously apply a force along the first direction X towards the battery cell 22 during use through the elastic component 314, thereby improving the contact between the mounting bracket 311 and the battery cell 22 during use. This effect allows the temperature on the battery cell 22 to be better transferred to the mounting cavity 311a, thereby improving the accuracy of the temperature detection of the battery cell 22 by the temperature detection element 312. This enables the effective acquisition of the usage status of the battery cell 22 inside the battery device 100 during use, which is beneficial to improving the stability and reliability of the battery device 100. On the other hand, since the mounting bracket 311 is installed by the first buckle 241 abutting against the first buckle 241 through the elastic component 314, the elastic component 314 can absorb the assembly tolerance or assembly error of the first buckle 241 and the mounting bracket 311 in the first direction X. This is beneficial to reduce the assembly difficulty between the temperature sampling component 31 and the first buckle 241 while improving the assembly stability between the temperature sampling component 31 and the first buckle 241.

[0151] According to some embodiments of this application, in conjunction with Figure 4 , Figure 5 , Figure 8 and Figure 10 As shown, the elastic component 314 may include a spring piece 3141, which is mounted on the mounting bracket 311. The first latch 241 abuts against the spring piece 3141 along the first direction X. That is, the spring piece 3141 is partially mounted on the mounting bracket 311 and partially abuts against the first pressing portion 2412 of the first latch 241, so that the first pressing portion 2412 of the first latch 241 presses the mounting bracket 311 onto the battery cell 22 through the spring piece 3141.

[0152] Optionally, the shape and structure of the spring 3141 can be various. For example, the spring 3141 can be a strip structure with its extension direction forming a non-zero angle with the first direction X, and one end of the spring 3141 is connected to the mounting bracket 311, and the other end abuts against the first buckle 241. Of course, the spring 3141 can also be bent into a V-shape, C-shape or S-shape, etc.

[0153] In this embodiment, by setting the elastic component 314 to include at least a spring piece 3141 mounted on the mounting bracket 311, and the first buckle 241 to abut against the spring piece 3141 along the first direction X, the first buckle 241 is configured to continuously apply a force to the mounting bracket 311 along the first direction X toward the battery cell 22 through the spring piece 3141 of the elastic component 314, and the first buckle 241 is configured to press down on the mounting bracket 311 and limit its assembly through the spring piece 3141. The structure is simple and easy to implement and assemble.

[0154] According to some embodiments of this application, refer to Figure 4 , Figure 9 and Figure 10 Please refer to further details. Figure 11 and Figure 12 As shown, Figure 11 This is an exploded view of the structure of the elastic component 314 of the temperature sampling component 31 provided in some embodiments of this application. Figure 12 This is a schematic diagram of the structure of the spring piece 3141 of the elastic component 314 of the temperature sampling component 31 provided in some embodiments of this application. The spring piece 3141 is bent to form a first abutment portion 31411, a bent portion 31412, and a second abutment portion 31413. Along the first direction X, the first abutment portion 31411 and the second abutment portion 31413 are spaced apart, and the first abutment portion 31411 abuts against the first buckle 241, the second abutment portion 31413 abuts against the mounting frame 311, and the bent portion 31412 is connected to the first abutment portion 31411 and the second abutment portion 31413 at both ends in its extending direction, and the bent portion 31412 is mounted on the mounting frame 311.

[0155] The spring piece 3141 is bent to form a first abutting part 31411, a bent part 31412, and a second abutting part 31413 connected in sequence. That is, the first abutting part 31411, the bent part 31412, and the second abutting part 31413 are integrally formed, and the bent part 31412 has two ends connected to the first abutting part 31411 and the second abutting part 31413 respectively in its extension direction.

[0156] The first abutting portion 31411 and the second abutting portion 31413 of the spring piece 3141 are arranged at intervals in the first direction X. The first abutting portion 31411 and the second abutting portion 31413 abut against the pressing portion of the first buckle 241 and the mounting bracket 311 respectively in the first direction X. The bending portion 31412 of the spring piece 3141 is a part that is bent and connects the first abutting portion 31411 and the second abutting portion 31413. The bending portion 31412 is mounted on the mounting bracket 311, so that the spring piece 3141 is bent into a structure similar to a "C".

[0157] Optionally, the mounting bracket 311 includes a base 3111 and an extension 3112. The base 3111 is used to abut against the battery cell 22. It can be a direct abutment structure or an indirect abutment structure. The extension 3112 is connected to the base 3111 and is inclinedly disposed on the base 3111, such that the extension direction of the extension 3112 is set at an acute angle with the first direction X. A part of the mounting cavity 311a is located in the extension 3112 and another part is located in the base 3111. Correspondingly, the bent part 31412 of the spring piece 3141 is located on the upper side of the extension 3112 in the first direction X and is mounted on the extension 3112. The second abutment part 31413 abuts against the base 3111 along the first direction X, so that the first buckle 241 can press the base 3111 onto the battery cell 22 through the spring piece 3141.

[0158] For example, the mounting cavity 311a is a structure that extends along the extension direction of the mounting bracket 311, and one end of the mounting cavity 311a passes through the end of the base 3111 near the battery cell 22 in the first direction X, and the other end passes through the end of the extension 3112 away from the base 3111, so as to facilitate the assembly of the temperature detection element 312 into the mounting cavity 311a, and to facilitate the extension of the connecting wire 313 into the mounting cavity 311a.

[0159] In this embodiment, the spring piece 3141 is configured to be bent to form a first abutment portion 31411, a bent portion 31412, and a second abutment portion 31413 connected in sequence. The first abutment portion 31411 and the second abutment portion 31413 are spaced apart in the first direction X and abut against the first buckle 241 and the mounting bracket 311 respectively. Simultaneously, the bent portion 31412 is mounted on the mounting bracket 311, resulting in a bent spring piece 3141 forming a "C"-shaped structure. The area near the middle of the spring piece 3141 is mounted on the mounting bracket 311, while the areas near both ends of the spring piece 3141 abut against the first buckle 241 and the mounting bracket 311 respectively. This structure of the spring piece 3141... On the one hand, it can reduce the assembly difficulty between the spring piece 3141 and the mounting bracket 311, as well as between the spring piece 3141 and the first buckle 241. On the other hand, when the first abutting part 31411 is pressed down by the first buckle 241, the elastic force generated by the spring piece 3141 can be better transmitted to the mounting bracket 311 through the bending part 31412 and the second abutting part 31413. It can also enable the first buckle 241 to press down on more positions of the mounting bracket 311 through the spring piece 3141, which is conducive to improving the stability of the first buckle 241 pressing the mounting bracket 311 onto the battery cell 22 through the spring piece 3141, thereby improving the assembly stability between the temperature sampling component 31 and the first buckle 241.

[0160] In some embodiments, combined with Figure 9 and Figure 12As shown, the bending portion 31412 includes a first straight section 31412a, a first arc-shaped section 31412b, and a second straight section 31412c connected in sequence. The first straight section 31412a is connected to the first abutting portion 31411, and the second straight section 31412c is connected to the second abutting portion 31413. The second straight section 31412c is mounted on the mounting bracket 311.

[0161] Wherein, the first straight segment 31412a and the second straight segment 31412c are the straight parts of the bent portion 31412, and the first straight segment 31412a and the second straight segment 31412c are respectively connected to the first abutting portion 31411 and the second abutting portion 31413, while the first arc segment 31412b is the curved part of the bent portion 31412. Correspondingly, the two ends of the first arc segment in its extension direction are respectively connected to the first straight segment 31412a and the second straight segment 31412c.

[0162] For example, the extension direction of the first straight segment 31412a and the extension direction of the second straight segment 31412c are set at an acute angle.

[0163] Optionally, the structure by which the second straight section 31412c is mounted on the mounting bracket 311 can be varied, such as adhesive bonding, snap-fitting, or bolting.

[0164] In this embodiment, by setting the first straight section 31412a of the bent portion 31412 to be connected to the first abutting portion 31411, and setting the second straight section 31412c of the bent portion 31412 to be connected to the second abutting portion 31413, both the first abutting portion 31411 and the second abutting portion 31413 are connected to the straight portion of the bent portion 31412, which helps to reduce the molding difficulty of the spring piece 3141. In addition, by setting the second straight section 31412c of the bent portion 31412 to be mounted on the mounting bracket 311, the straight portion of the bent portion 31412 is assembled with the mounting bracket 311, thereby reducing the assembly difficulty between the bent portion 31412 and the mounting bracket 311 and increasing the contact area between the bent portion 31412 and the mounting bracket 311, so as to improve the stability of the spring piece 3141 mounted on the mounting bracket 311.

[0165] In some embodiments, the mounting bracket 311 includes a base 3111 and an extension 3112 connected to each other. The extension 3112 is obliquely disposed on the base 3111, and at least a portion of the mounting cavity 311a is located within the extension 3112. A second abutting portion 31413 abuts against the base 3111 along a first direction X, and a second straight segment 31412c is mounted on the extension 3112, with the extension direction of the second straight segment 31412c parallel to the extension direction of the extension 3112.

[0166] Optionally, the second abutting part 31413 can be a structure that directly abuts against the base 3111, or it can be a structure that indirectly abuts against the base 3111. For example, refer to Figure 8 Please refer to further details. Figure 13 As shown, Figure 13 This is a schematic diagram of the structure of the mounting bracket 311 of the temperature sampling component 31 provided in some embodiments of this application. The base 3111 of the mounting bracket 311 has an abutment surface 3111a. Two fourth limiting portions 3116 are protruding on the abutment surface 3111a. The second abutment portion 31413 is a structure that abuts against the fourth limiting portion 3116, so that the second abutment portion 31413 is a structure that indirectly abuts against the base 3111 along the first direction X.

[0167] In this embodiment, the mounting bracket 311 is provided with a base 3111 and an extension 3112 connected to each other, and the extension 3112 is inclinedly disposed on the base 3111. By setting the second abutment portion 31413 of the spring piece 3141 to abut against the base 3111 along the first direction X, the first buckle 241 can continuously press down on the base 3111 of the mounting bracket 311 along the first direction X during use through the spring piece 3141, thereby improving the contact effect between the mounting bracket 311 and the battery cell 22 during use. This allows the temperature on the battery cell 22 to be better transferred to the mounting cavity 311a, which is beneficial to improving the temperature detection element 312. To improve the accuracy of temperature detection of the battery cell 22, the second straight section 31412c of the bent portion 31412 is mounted on the extension 3112 of the mounting bracket 311. By setting the extension direction of the second straight section 31412c of the bent portion 31412 to be parallel to the extension direction of the extension 3112, it is beneficial to further reduce the assembly difficulty between the second straight section 31412c of the bent portion 31412 and the mounting bracket 311, and to further increase the contact area between the second straight section 31412c of the bent portion 31412 and the mounting bracket 311, so as to further improve the stability of the spring piece 3141 mounted on the mounting bracket 311.

[0168] In some embodiments, see Figure 12 As shown, the second straight section 31412c is provided with a reinforcing rib 31412d, and the extending direction of the reinforcing rib 31412d is parallel to the extending direction of the second straight section 31412c.

[0169] Among them, the second straight section 31412c has a reinforcing rib 31412d protruding on the side of its thickness away from the extension 3112 of the mounting bracket 311. Of course, the reinforcing rib 31412d can also be protruding on the side of the second straight section 31412c facing the extension 3112 of the mounting bracket 311 along its thickness direction.

[0170] The reinforcing rib 31412d extends in a direction parallel to the extension direction of the second straight segment 31412c, meaning that the reinforcing rib 31412d is a strip structure extending along the extension direction of the second straight segment 31412c.

[0171] For example, only one reinforcing rib 31412d is provided on the second straight segment 31412c. Of course, in other embodiments, multiple reinforcing ribs 31412d may also be provided on the second straight segment 31412c. The multiple reinforcing ribs 31412d may be arranged along the extension direction of the second straight segment 31412c or along the second direction Y.

[0172] Optionally, the structure of providing reinforcing ribs 31412d on the second straight segment 31412c can be varied. For example, in this embodiment, the second straight segment 31412c is a reinforcing rib 31412d structure formed by stamping in its thickness direction, such that a stamping groove is formed on one side of the second straight segment 31412c in its thickness direction, and a reinforcing rib 31412d is formed on the other side corresponding to the position of the stamping groove, so that the reinforcing rib 31412d and the second straight segment 31412c are integrally formed. Of course, in other embodiments, the reinforcing rib 31412d can also be connected to the second straight segment 31412c by welding or other structures.

[0173] In this embodiment, by providing reinforcing ribs 31412d extending along the extension direction of the second straight section 31412c, the structural strength and bending strength of the second straight section 31412c are improved, thereby effectively reducing bending or deformation of the second straight section 31412c during use, and further improving the structural stability of the second straight section 31412c installed on the mounting bracket 311.

[0174] According to some embodiments of this application, in conjunction with Figure 8 , Figure 10 and Figure 12 As shown, the spring 3141 may also include two clamping portions 31414, which are connected to the two ends of the bent portion 31412 in the second direction Y. The two clamping portions 31414 are located on both sides of the mounting bracket 311 in the second direction Y. The two clamping portions 31414 are configured to clamp the mounting bracket 311. The width direction of the bent portion 31412 is parallel to the second direction Y, and the second direction Y is perpendicular to the first direction X.

[0175] The two clamping parts 31414 are arranged at intervals along the second direction Y and are respectively connected to the two ends of the bent part 31412. Correspondingly, part of the mounting frame 311 is located between the two clamping parts 31414, so that the two clamping parts 31414 can cooperate to clamp the mounting frame 311, so as to install the bent part 31412 on the mounting frame 311.

[0176] For example, the two clamping parts 31414 are structures connected to the two ends of the second straight section 31412c of the bent part 31412 in the second direction Y, and the two clamping parts 31414 and the bent part 31412 are integrally formed. Of course, in other embodiments, the two clamping parts 31414 may also be structures that are separately provided from the bent part 31412. Correspondingly, the two clamping parts 31414 can be connected to the bent part 31412 by means of welding or other structures.

[0177] In an embodiment where the mounting base includes a base 3111 and an extension 3112, the two clamping portions 31414 are respectively located on both sides of the extension 3112 in the second direction Y, and the two clamping portions 31414 are configured to cooperate in clamping the extension 3112 of the mounting bracket 311.

[0178] In this embodiment, the bent portion 31412 is connected to clamping portions 31414 at both ends in the width direction. The two clamping portions 31414 are located on both sides of the mounting frame 311 in the second direction Y and cooperate to clamp the mounting frame 311, so as to install the bent portion 31412 of the spring piece 3141 on the mounting frame 311. On the one hand, the structure is simple and easy to implement and assemble. On the other hand, the two clamping portions 31414 can also play a certain limiting role on the bent portion 31412 in the second direction Y, which helps to reduce the phenomenon of shaking of the bent portion 31412 in the second direction Y during use, thereby improving the stability of the bent portion 31412 installed on the mounting frame 311.

[0179] In some embodiments, see Figure 8 , Figure 12 and Figure 13 As shown, the clamping part 31414 is provided with an assembly hole 31414a, and the mounting bracket 311 is provided with a snap-fit ​​part 3113, which is inserted into the assembly hole 31414a.

[0180] Each clamping part 31414 is provided with an assembly hole 31414a, and the assembly hole 31414a has a structure that penetrates the clamping part 31414 along the second direction Y. Correspondingly, the mounting part is provided with a snap-fit ​​part 3113 on both sides of the second direction Y, and each snap-fit ​​part 3113 is inserted into the assembly hole 31414a of the clamping part 31414 on the same side of the second direction Y.

[0181] For example, the snap-fit ​​portion 3113 and the mounting bracket 311 are integrally formed structures, such as injection molding.

[0182] As an example, each clamping part 31414 is provided with only one mounting hole 31414a. Correspondingly, each side of the mounting bracket 311 is provided with a snap-fit ​​part 3113, and the snap-fit ​​part 3113 and the mounting hole 31414a are in a one-to-one correspondence. Of course, in other embodiments, the clamping part 31414 may also be provided with multiple mounting holes 31414a. Correspondingly, the mounting bracket 311 is provided with multiple snap-fit ​​parts 3113 on both sides in the second direction Y.

[0183] In the embodiment where the mounting bracket 311 includes a base 3111 and an extension 3112, and the bent portion 31412 is mounted on the extension 3112, the snap-fit ​​portion 3113 is provided on the extension 3112.

[0184] In this embodiment, by providing an assembly hole 31414a on the clamping part 31414 and a corresponding snap-fit ​​part 3113 on the mounting frame 311, the snap-fit ​​part 3113 can be inserted into the assembly hole 31414a. This facilitates quick positioning and stable connection between the mounting frame 311 and the clamping part 31414, thereby further improving the stability of the bent part 31412 on the mounting frame 311. Moreover, this structure is simple in design and easy to assemble. It can reliably fix the mounting frame 311 and the clamping part 31414 without additional fasteners, which helps to reduce the difficulty of installing the bent part 31412 on the mounting frame 311.

[0185] In some embodiments, please combine Figure 8 , Figure 12 and Figure 13 As shown, the mounting bracket 311 is provided with a first limiting part 3114 and a second limiting part 3115. The first limiting part 3114 and the second limiting part 3115 are arranged at intervals along the third direction Z. The clamping part 31414 is disposed on the third direction Z between the first limiting part 3114 and the second limiting part 3115. The first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0186] The mounting bracket 311 has a first limiting part 3114 and a second limiting part 3115 on both sides in the second direction Y. The first limiting part 3114 and the second limiting part 3115 located on the same side of the mounting bracket 311 in the second direction Y are arranged at intervals along the third direction Z. Correspondingly, each clamping part 31414 is arranged in the third direction Z between the corresponding first limiting part 3114 and the second limiting part 3115, and the two ends of the clamping part 31414 in the third direction Z respectively abut against the corresponding first limiting part 3114 and the second limiting part 3115.

[0187] For example, the first limiting part 3114 and the second limiting part 3115 are both integrally formed with the mounting bracket 311, such as by injection molding.

[0188] In the embodiment where the mounting bracket 311 includes a base 3111 and an extension 3112, and the bent portion 31412 is mounted on the extension 3112, the first limiting portion 3114 and the second limiting portion 3115 are disposed on the extension 3112.

[0189] In this embodiment, by providing a first limiting part 3114 and a second limiting part 3115 arranged at intervals along the third direction Z on the mounting frame 311, and by placing the clamping part 31414 between the first limiting part 3114 and the second limiting part 3115 in the third direction Z, the two ends of the clamping part 31414 in the third direction Z are positioned and limited. On the one hand, this can improve the rapid positioning and assembly accuracy between the clamping part 31414 and the mounting frame 311, thereby improving the assembly quality between the clamping part 31414 and the mounting frame 311. On the other hand, it can effectively alleviate the phenomenon of the clamping part 31414 shaking or shifting along the third direction Z during use, which is conducive to further improving the stability of the bent part 31412 installed on the mounting frame 311.

[0190] According to some embodiments of this application, see Figure 8 , Figure 9 and Figure 10 As shown, the elastic component 314 may further include a guide 3142, which is telescopically disposed between the first abutment portion 31411 and the mounting bracket 311 along the first direction X, and the two ends of the guide 3142 abut against the first abutment portion 31411 and the mounting bracket 311 respectively in the first direction X.

[0191] The guide member 3142 is a structure that can extend and retract along the first direction X and abut against the first abutment portion 31411 and the base 3111 of the mounting bracket 311, so that when the first buckle 241 presses down on the first abutment portion 31411, the guide member 3142 can shorten along the first direction X. The structure of the guide member 3142 can be various, such as a sleeve-type telescopic structure or a slide rail-type telescopic structure.

[0192] In this embodiment, a guide member 3142 that is retractable along the first direction X is provided between the first abutment portion 31411 and the mounting bracket 311, and the two ends of the guide member 3142 abut against the first abutment portion 31411 and the mounting bracket 311 respectively in the first direction X. This allows the guide member 3142 to play a certain guiding role when the first buckle 241 presses down on the first abutment portion 31411 along the first direction X, so that the spring piece 3141 can be better compressed and deformed along the first direction X, thereby improving the stability of the first buckle 241 pressing down on the mounting bracket 311 through the spring piece 3141.

[0193] According to some embodiments of this application, refer to Figure 9 , Figure 10 and Figure 11 Please refer to further details. Figure 14 As shown, Figure 14 This is a cross-sectional view of the guide member 3142 of the elastic component 314 of the temperature sampling assembly 31 provided in some embodiments of this application. The guide member 3142 may include a first guide portion 31421, a second guide portion 31422, and a first elastic member 31423. One end of the first guide portion 31421 abuts against the mounting bracket 311 in the first direction X. The second guide portion 31422 is movably disposed on the first guide portion 31421 along the first direction X, and the end of the second guide portion 31422 away from the mounting bracket 311 in the first direction X abuts against the first abutting portion 31411. The two ends of the first elastic member 31423 abut against the first guide portion 31421 and the second guide portion 31422 in the first direction X, respectively.

[0194] The first guide portion 31421 is a component of the guide member 3142 that abuts against the base 3111 of the mounting bracket 311 along the first direction X, while the second guide portion 31422 is the part of the guide member 3142 that abuts against the first abutting portion 31411 along the first direction X, and the second guide portion 31422 can move relative to the first guide portion 31421 along the first direction X to realize the telescopic function of the guide member 3142.

[0195] Optionally, the second guide portion 31422 may be a structure that is movably inserted inside the first guide portion 31421 along the first direction X, or it may be a structure that is movably sleeved on the outside of the first guide portion 31421 along the first direction X.

[0196] The first elastic member 31423 has two ends that abut against the first guide portion 31421 and the second guide portion 31422 respectively in the first direction X. This allows the first buckle 241 to compress the first elastic member 31423 between the first guide portion 31421 and the second guide portion 31422 when the first abutment portion 31411 presses down on the second guide portion 31422. This allows the elastic force stored in the first elastic member 31423 to act on the base 3111 of the mounting bracket 311 through the first guide portion 31421, thereby enabling the first guide portion 31421 to press the base 3111 of the mounting bracket 311 onto the battery cell 22 along the first direction X.

[0197] As an example, the first elastic member 31423 is a spring disposed between the first guide portion 31421 and the second guide portion 31422. Of course, in other embodiments, the first elastic member 31423 may also be elastic rubber or the like disposed between the first guide portion 31421 and the second guide portion 31422. Similarly, the structure of the first elastic member 31423 disposed between the first guide portion 31421 and the second guide portion 31422 can also be varied. The first elastic member 31423 may be sleeved on the outside of the first guide portion 31421 and the second guide portion 31422, with both ends of the first elastic member 31423 abutting against the first guide portion 31421 and the second guide portion 31422 respectively. Of course, the first elastic member 31423 may also be accommodated inside the first guide portion 31421 or the second guide portion 31422, with both ends of the first elastic member 31423 abutting against the first guide portion 31421 and the second guide portion 31422 respectively.

[0198] It should be noted that in embodiments where the elastic component 314 includes a guide 3142, and the guide 3142 includes a first guide portion 31421, a second guide portion 31422, and a first elastic component 31423, the elastic component 314 may also omit the spring piece 3141. Correspondingly, the first guide portion 31421 and the second guide portion 31422 of the guide 3142 respectively abut against the base 3111 of the mounting bracket 311 and the pressing portion of the first buckle 241 in the first direction X, so that the first buckle 241 directly presses the mounting bracket 311 onto the battery cell 22 through the guide 3142 of the elastic component 314.

[0199] In this embodiment, the first guide portion 31421 and the second guide portion 31422 of the guide member 3142 abut against the first abutment portion 31411 and the mounting bracket 311, respectively, and the second guide portion 31422 is movably disposed on the first guide portion 31421 along the first direction X, so that the guide member 3142 is a structure that can extend and retract along the first direction X. A first elastic member 31423 is provided between the first guide portion 31421 and the second guide portion 31422, and the two ends of the first elastic member 31423 in the first direction X are respectively abutted against the first guide portion 31421 and the second guide portion 31422, thereby enabling... The guide member 3142 is an elastic telescopic structure that can extend and retract along the first direction X. On the one hand, it allows the force of the first buckle 241 pressing down on the first abutment part 31411 to be directly transmitted to the mounting bracket 311 along the first direction X through the guide member 3142. This helps to further improve the effect and stability of the first buckle 241 pressing the mounting bracket 311 onto the battery cell 22 through the elastic component 314. On the other hand, when the first buckle 241 presses down on the spring piece 3141, the guide member 3142 can also distribute part of the force on the spring piece 3141, which helps to reduce the downward pressure on the spring piece 3141 and improve the service life of the spring piece 3141.

[0200] In some embodiments, refer to Figure 14 Please refer to further details. Figure 15 and Figure 16 As shown, Figure 15 This is a schematic diagram of the structure of the first guide portion 31421 of the guide member 3142 of the elastic component 314 provided in some embodiments of this application. Figure 16 This is a schematic diagram of the structure of the second guide portion 31422 of the guide member 3142 of the elastic component 314 provided in some embodiments of this application. The first guide portion 31421 has a cavity 31421a inside, and the end of the second guide portion 31422 away from the first abutment portion 31411 in the first direction X is movably inserted into the cavity 31421a. The first elastic member 31423 is disposed in the cavity 31421a.

[0201] The first guide portion 31421 has a cavity 31421a inside, and a third through hole 31421b is provided at one end of the first guide portion 31421 near the first abutment portion 31411. The third through hole 31421b penetrates the cavity wall of the cavity 31421a along the first direction X, so that the second guide portion 31422 can pass through the third through hole 31421b along the first direction X and be inserted into the cavity 31421a, so that the second guide portion 31422 is movably disposed on the first guide portion 31421 along the first direction X.

[0202] It should be noted that the cavity 31421a has a first cavity wall surface 31421c and a second cavity wall surface 31421d in the first direction X. The third through hole 31421b penetrates the first cavity wall surface 31421c. Correspondingly, the first elastic member 31423 is disposed in the cavity 31421a, and the two ends of the first elastic member 31423 in the first direction X respectively abut against the second guide part 31422 and the second cavity wall surface 31421d, so that the first buckle 241 can compress the first elastic member 31423 when it presses down on the second guide part 31422 through the first abutting part 31411.

[0203] Optionally, see Figure 14 and Figure 16 As shown, a fifth limiting part 31422a is also provided on the outer peripheral surface of the second guide part 31422. In the projection plane perpendicular to the first direction X, at least a portion of the orthographic projection of the fifth limiting part 31422a is located within the orthographic projection of the first cavity wall surface 31421c, so that when the second guide part 31422 moves away from the first elastic member 31423 along the first direction X, the fifth limiting part 31422a can abut against the first cavity wall surface 31421c to restrict the second guide part 31422 from disengaging from the first guide part 31421.

[0204] For example, the fifth limiting portion 31422a is an annular structure extending circumferentially along the second guide portion 31422. Of course, in other embodiments, multiple fifth limiting portions 31422a may also be provided on the outer peripheral surface of the second guide portion 31422, and the multiple fifth limiting portions 31422a are arranged at intervals along the circumferential direction of the second guide portion 31422.

[0205] For example, the surface of the fifth limiting part 31422a facing the second cavity wall 31421d in the first direction X is flush with and coplanar with the surface of the second guide part 31422 facing the second cavity wall 31421d in the first direction X.

[0206] In this embodiment, by providing a cavity 31421a inside the first guide portion 31421 for the insertion of the second guide portion 31422, and by disposing of the first elastic member 31423 within the cavity 31421a and abutting between the first guide portion 31421 and the second guide portion 31422, the guide portion 31422 with this structure not only enables the second guide portion 31422 to be movably disposed on the first guide portion 31421 along the first direction X, but also improves the stability and reliability of the movement of the second guide portion 31422 relative to the first guide portion 31421 along the first direction X, thereby enhancing the guiding accuracy and telescopic stability of the guide portion 3142. On the one hand, it can reduce the difficulty of assembling the first elastic element 31423 between the first guide portion 31421 and the second guide portion 31422. At the same time, the cavity 31421a can also play a certain protective role for the first elastic element 31423, so as to reduce the impact or wear of the first elastic element 31423 during use, which is conducive to improving the service life of the first elastic element 31423. It can also improve the stability of the first elastic element 31423 being compressed along the first direction X in the cavity 31421a, so as to achieve a stable elastic force output of the first elastic element 31423, which is conducive to improving the stability of the first elastic element 31423 in use.

[0207] According to some embodiments of this application, in conjunction with Figure 9 , Figure 10 and Figure 12 As shown, the second abutting part 31413 is provided with a first through hole 31413a, and the first guide part 31421 passes through the first through hole 31413a along the first direction X.

[0208] The second abutting portion 31413 is provided with a first through hole 31413a, and the first through hole 31413a is a structure that penetrates the second abutting portion 31413 along the thickness direction of the second abutting portion 31413. Correspondingly, the first guide portion 31421 is inserted into the first through hole 31413a along the first direction X, so that the second abutting portion 31413 is a structure that is sleeved on the outside of the first guide portion 31421.

[0209] In this embodiment, by providing a first through hole 31413a on the second abutment portion 31413 and having the first guide portion 31421 pass through the first through hole 31413a along the first direction X, the second abutment portion 31413 of the spring piece 3141 is sleeved on the outside of the first guide portion 31421. This is beneficial to further improve the structural stability of the spring piece 3141 and the guide member 3142 when they are assembled together, and it is also beneficial to further improve the stability of the first guide portion 31421 abutting against the mounting bracket 311 along the first direction X.

[0210] In some embodiments, combined with Figure 9 , Figure 10 , Figure 14 and Figure 15 As shown, the outer peripheral surface of the first guide portion 31421 is provided with a third limiting portion 31421e, and the third limiting portion 31421e abuts against the side of the second abutting portion 31413 away from the first abutting portion 31411 in the first direction X.

[0211] The third limiting part 31421e abuts against the side of the second abutting part 31413 away from the first abutting part 31411 in the first direction X. That is, the third limiting part 31421e is located between the second abutting part 31413 and the base 3111 of the mounting bracket 311 in the first direction X and abuts against the second abutting part 31413.

[0212] For example, the third limiting part 31421e is an annular structure extending circumferentially along the first guide part 31421. Of course, in other embodiments, multiple third limiting parts 31421e may also be provided on the outer peripheral surface of the first guide part 31421, and the multiple third limiting parts 31421e are arranged at intervals along the circumferential direction of the first guide part 31421.

[0213] In this embodiment, by providing a third limiting part 31421e protruding from the outer peripheral surface of the first guide part 31421, and the third limiting part 31421e having a structure that abuts against the side of the second abutting part 31413 away from the first abutting part 31411 in the first direction X, the third limiting part 31421e can also play a certain limiting role on the first guide part 31421 in the first direction X. On the one hand, it can alleviate the phenomenon that the first guide part 31421 disengages from the first through hole 31413a in the direction away from the mounting bracket 311 along the first direction X. On the other hand, it can also enable the second abutting part 31413 to better achieve the first guide part 31421 abutting against the mounting bracket 311 through the third limiting part 31421e.

[0214] According to some embodiments of this application, in conjunction with Figure 4 , Figure 9 and Figure 12 As shown, the first abutment portion 31411 is bent to form a third straight segment 31411a, a second arc-shaped segment 31411b, and a fourth straight segment 31411c connected in sequence. The third straight segment 31411a is connected to the bent portion 31412, and the fourth straight segment 31411c is located on the side of the third straight segment 31411a facing the second abutment portion 31413 in the first direction X. Along the first direction X, the third straight segment 31411a abuts against the first latch 241, and the end of the second guide portion 31422 away from the mounting bracket 311 abuts against the fourth straight segment 31411c.

[0215] The first abutting portion 31411 is a structure formed by bending into two parts arranged along the first direction X, namely a third straight segment 31411a and a fourth straight segment 31411c. The second arc segment is the part of the first abutting portion 31411 that is bent and connects the third straight segment 31411a and the fourth straight segment 31411c. Correspondingly, along the first direction X, the third straight segment 31411a abuts against the first buckle 241, and the second guide portion 31422 is away from the fastener. One end of the mounting bracket 311 abuts against the fourth straight section 31411c. That is, the third straight section 31411a is located between the fourth straight section 31411c and the first pressing part 2412 of the first buckle 241 in the first direction X and abuts against the first pressing part 2412 of the first buckle 241. The fourth straight section 31411c is located between the third straight section 31411a and the second guide part 31422 in the first direction X and abuts against the second guide part 31422.

[0216] In this embodiment, the first abutting portion 31411 is configured to be bent to form a third straight segment 31411a, a second arc-shaped segment 31411b, and a fourth straight segment 31411c connected in sequence. The third straight segment 31411a and the fourth straight segment 31411c are arranged along the first direction X and respectively abut against the first latch 241 and the second guide portion 31422. This achieves the first abutting portion 31411 abutting between the first latch 241 and the second guide portion 31422 in the first direction X. This structure of the spring piece 3141 enhances the overall structural strength of the first abutting portion 31411 and, through… The second arc-shaped segment 31411b can also relieve stress, thereby reducing the phenomenon of local stress concentration in the first abutment portion 31411, which can enhance the durability and fatigue resistance of the first abutment portion 31411. On the other hand, it can achieve a structure in which the first abutment portion 31411 consists of straight parts that abut against the first buckle 241 and the second guide portion 31422. This helps to reduce the difficulty of the first abutment portion 31411 abutting against the first buckle 241 and the second guide portion 31422 along the first direction X, and also helps to improve the stability of the first abutment portion 31411 abutting against the first buckle 241 and the second guide portion 31422.

[0217] In some embodiments, combined with Figure 9 , Figure 12 , Figure 14 and Figure 16 As shown, the fourth straight section 31411c is provided with a second through hole 31411d. Along the first direction X, the second guide part 31422 abuts against one end of the fourth straight section 31411c and is provided with a plug-in part 31422b. The plug-in part 31422b is inserted into the second through hole 31411d.

[0218] The second through hole 31411d is a structure that penetrates the fourth straight section 31411c along the first direction X, and the third straight section 31411a and the fourth straight section 31411c are arranged at intervals in the first direction X, such that the insertion part 31422b protruding from one end of the second guide part 31422 is inserted into the second through hole 31411d and extends into the gap between the third straight section 31411a and the fourth straight section 31411c.

[0219] In this embodiment, by providing a second through hole 31411d on the fourth straight section 31411c of the first abutting part 31411, and by providing an insertion part 31422b protruding from one end of the second guide part 31422 that abuts against the fourth straight section 31411c and inserted into the second through hole 31411d along the first direction X, the stability of the abutting between the second guide part 31422 and the fourth straight section 31411c of the first abutting part 31411 can be further improved, which helps to reduce the risk of the second guide part 31422 and the fourth straight section 31411c of the first abutting part 31411 disengaging from each other during use.

[0220] According to some embodiments of this application, in conjunction with Figure 8 , Figure 10 and Figure 13 As shown, the mounting bracket 311 has an abutment surface 3111a. Along the first direction X, the end of the guide member 3142 away from the first abutment portion 31411 abuts against the abutment surface 3111a. The abutment surface 3111a is provided with two fourth limiting portions 3116, which are spaced apart along the second direction Y. The guide member 3142 is located between the two fourth limiting portions 3116 in the second direction Y, and the second abutment portion 31413 abuts against the two fourth limiting portions 3116 along the first direction X. The width direction of the bent portion 31412 is parallel to the second direction Y, and the second direction Y is perpendicular to the first direction X.

[0221] In one embodiment where the mounting bracket 311 includes a base 3111 and an extension 3112, the base 3111 has an abutment surface 3111a on the side opposite to the battery cell 22. Correspondingly, the guide member 3142 is a structure that abuts against the base 3111 along the first direction X, and the second abutment portion 31413 is a structure that indirectly abuts against the base 3111 through two fourth limiting portions 3116.

[0222] The guide member 3142 is located between the two fourth limiting portions 3116 in the second direction Y. That is, part of the guide member 3142 is inserted between the two fourth limiting portions 3116 along the first direction X. For example, in the embodiment of this application, part of the first guide portion 31421 of the guide member 3142 is located between the two fourth limiting portions 3116 in the second direction Y. It should be noted that in the embodiment where the first guide portion 31421 passes through the first through hole 31413a of the second abutment portion 31413 and a third limiting portion 31421e is protruding on the outer peripheral surface of the first guide portion 31421, the third limiting portion 31421e is located between the two fourth limiting portions 3116 in the second direction Y.

[0223] In this embodiment, by providing two fourth limiting portions 3116 spaced apart along the second direction Y on the abutting surface 3111a where the guide member 3142 abuts on the mounting bracket 311, and with the guide member 3142 located between the two fourth limiting portions 3116 in the second direction Y, the two fourth limiting portions 3116 can play a certain positioning and limiting role for the guide member 3142 in the second direction Y. This is beneficial to improving the assembly accuracy between the guide member 3142 and the mounting bracket 311, and also beneficial to further improve the guide member 3142. The stability of the spring piece 3141 against the mounting bracket 311 is improved to reduce the phenomenon of the guide member 3142 sliding or detaching from the mounting bracket 311 along the second direction Y. In addition, by setting the second abutting part 31413 of the spring piece 3141 to abut against the two fourth limiting parts 3116 along the first direction X, the second abutting part 31413 of the spring piece 3141 is abutted against the mounting bracket 311 by the fourth limiting parts 3116, which helps to reduce the difficulty of assembling the spring piece 3141 and the guide member 3142 as a whole onto the mounting bracket 311.

[0224] According to some embodiments of this application, in conjunction with Figure 8 , Figure 8 , Figure 10 , Figure 11 and Figure 12 As shown, the elastic component 314 may further include a second elastic member 3143. Along the first direction X, the second elastic member 3143 is disposed between the first abutting portion 31411 and the second abutting portion 31413, and the two ends of the second elastic member 3143 abut against the first abutting portion 31411 and the second abutting portion 31413 respectively.

[0225] The second elastic member 3143 has two ends in the first direction X that abut against the first abutment portion 31411 and the second abutment portion 31413 respectively, so that the force of the first buckle 241 pressing down on the first abutment portion 31411 can also be directly transmitted to the second abutment portion 31413 through the second elastic member 3143, so as to press the mounting bracket 311 onto the battery cell 22.

[0226] As an example, the second elastic member 3143 is a spring disposed between the first abutting portion 31411 and the second abutting portion 31413. Of course, in other embodiments, the second elastic member 3143 may also be elastic rubber disposed between the first abutting portion 31411 and the second abutting portion 31413.

[0227] It should be noted that in embodiments where the elastic component 314 includes a second elastic element 3143, the elastic component 314 may also be without a spring sheet 3141. Correspondingly, the second elastic element 3143 has its two ends in the first direction X abutting against the base 3111 of the mounting bracket 311 and the pressing part of the first buckle 241, respectively, so that the first buckle 241 directly presses the mounting bracket 311 onto the battery cell 22 through the second elastic element 3143 of the elastic component 314.

[0228] In this embodiment, by providing a second elastic member 3143 between the first abutment portion 31411 and the second abutment portion 31413 of the spring piece 3141, and the two ends of the second elastic member 3143 in the first direction X being respectively abutting the first abutment portion 31411 and the second abutment portion 31413, on the one hand, the force of the first buckle 241 pressing down on the first abutment portion 31411 can also be directly transmitted to the second abutment portion 31413 along the first direction X through the second elastic member 3143 to press the mounting bracket 311, which is beneficial to further improve the effect and stability of the first buckle 241 pressing the mounting bracket 311 onto the battery cell 22 through the elastic component 314. On the other hand, when the first buckle 241 presses down on the spring piece 3141, the second elastic member 3143 can also share part of the force on the spring piece 3141, which is beneficial to reduce the downward pressure on the spring piece 3141 and improve the service life of the spring piece 3141.

[0229] In some embodiments, see Figure 10 As shown, the elastic component 314 may further include a guide 3142, which is telescopically disposed between the first abutment portion 31411 and the mounting bracket 311 along the first direction X, and the two ends of the guide 3142 in the first direction X abut against the first abutment portion 31411 and the mounting bracket 311 respectively, and the second elastic component 3143 is sleeved on the outside of the guide 3142.

[0230] In this embodiment, by providing a guide member 3142 that is retractable along the first direction X between the first abutment portion 31411 and the mounting bracket 311, and by having the second elastic member 3143 fitted onto the outside of the guide member 3142, the guide member 3142 can play a certain guiding role when the first buckle 241 presses down on the second elastic member 3143 through the first abutment portion 31411. This allows the second elastic member 3143 to be better compressed and deformed along the first direction X, thereby improving the stability of the first elastic member 31423 and enhancing the effect of force transmission from the first buckle 241 through the second elastic member 3143.

[0231] According to some embodiments of this application, refer to Figure 7 , Figure 9 and Figure 13 Please refer to further details. Figure 17 , Figure 17 This is a schematic diagram of the structure of the heat-conducting element 315 of the temperature sampling assembly 31 provided in some embodiments of this application. The mounting cavity 311a penetrates the mounting frame 311 at one end near the battery cell 22 in the first direction X and forms a first through-hole 311b. The temperature sampling assembly 31 may further include the heat-conducting element 315, which is connected to the mounting frame 311 and blocks the first through-hole 311b. The heat-conducting element 315 abuts against the battery cell 22 along the first direction X, and the thermal conductivity of the heat-conducting element 315 is greater than that of the mounting frame 311.

[0232] In one embodiment where the mounting bracket 311 includes a base 3111 and an extension 3112, a portion of the mounting cavity 311a is located within the extension 3112 and extends along the extension direction of the extension 3112. The mounting cavity 311a penetrates the base 3111 in its extension direction at one end near the battery cell 22 in the first direction X and forms a first through-hole 311b. Correspondingly, the heat-conducting member 315 is a structure connected to the side of the base 3111 facing the battery cell 22 and blocks the first through-hole 311b, so that the base 3111 of the mounting bracket 311 is a structure that abuts against the battery cell 22 through the heat-conducting member 315.

[0233] For example, the heat-conducting element 315 abuts against the casing of the battery cell 22.

[0234] It should be noted that the mounting bracket 311 is made of non-metallic material, such as polypropylene, polycarbonate, polyphenylene sulfide, or poly(hexamethylene terephthalamide). Correspondingly, the thermal conductivity of the heat-conducting component 315 is greater than that of the mounting bracket 311. The heat-conducting component 315 can also be made of various materials, such as copper or aluminum.

[0235] Alternatively, the structure by which the heat-conducting element 315 is connected to the mounting bracket 311 can be varied, for example, see [reference needed]. Figure 17As shown, the heat-conducting component 315 has multiple protrusions 3151. Correspondingly, the base 3111 of the mounting bracket 311 is provided with multiple slots, each slot for a protrusion 3151 to be inserted into, so as to connect the heat-conducting component 315 to the mounting bracket 311. Of course, in other embodiments, the heat-conducting component 315 can also be connected to the mounting bracket 311 by adhesive or bolt connection.

[0236] In this embodiment, the mounting cavity 311a is a structure that penetrates the mounting bracket 311 at one end near the battery cell 22 in the first direction X and forms a first through-hole 311b. This provides a direct channel for heat conduction between the temperature sensing element 312 and the battery cell 22, reducing the phenomenon of heat transfer delay or attenuation caused by structural obstruction. Furthermore, by connecting a heat-conducting element 315 to the mounting bracket 311 to shield the first through-hole 311b, the heat-conducting element 315 and the battery cell 22 are in contact with each other along the first direction X, and the thermal conductivity of the heat-conducting element 315 is greater than that of the mounting bracket 311a. The thermal conductivity of the frame 311 allows the heat-conducting component 315 to better contact the battery cell 22 under the action of the elastic component 314. As a result, the temperature of the battery cell 22 can be better transferred to the mounting cavity 311a through the heat-conducting component 315. At the same time, the heat-conducting component 315 can also prevent impurities or foreign objects from entering the mounting cavity 311a and contaminating or damaging the temperature detection component 312. Thus, while further improving the accuracy of the temperature detection component 312 in detecting the temperature of the battery cell 22, it can also further improve the service life and reliability of the temperature detection component 312.

[0237] In some embodiments, the thermal conductivity of the heat-conducting element 315 is 80 W / (m·K)-500 W / (m·K).

[0238] For example, the thermal conductivity of the heat-conducting element 315 can be 80 W / (m·K), 90 W / (m·K), 100 W / (m·K), 110 W / (m·K), 120 W / (m·K), 130 W / (m·K), 140 W / (m·K), 150 W / (m·K), 160 W / (m·K), 180 W / (m·K), 190 W / (m·K), 200 W / (m·K), 210 W / (m·K), 220 W / (m·K), 230 W / (m·K), 240 W / (m·K), 250 W / (m·K), 260 W / (m·K), 270 W / (m·K), 280 W / (m·K), 290 W / (m·K), 3 The value is any one of the following values ​​or a range between any two: 00W / (m·K), 310W / (m·K), 320W / (m·K), 330W / (m·K), 340W / (m·K), 350W / (m·K), 360W / (m·K), 370W / (m·K), 380W / (m·K), 390W / (m·K), 400W / (m·K), 410W / (m·K), 420W / (m·K), 430W / (m·K), 440W / (m·K), 450W / (m·K), 460W / (m·K), 470W / (m·K), 480W / (m·K), 490W / (m·K), 500W / (m·K).

[0239] In this embodiment, on the one hand, the thermal conductivity of the heat-conducting component 315 is set to be greater than or equal to 80 W / (m·K) to improve the thermal conductivity of the heat-conducting component 315, thereby enabling better transfer of the temperature on the battery cell 22 to the mounting cavity 311a of the mounting bracket 311 for detection by the temperature detection component 312, thereby further improving the effect and accuracy of the temperature detection component 312 in detecting the temperature of the battery cell 22, and thus effectively obtaining the usage status of the battery cell 22 inside the battery device 100 during use. On the other hand, the thermal conductivity of the heat-conducting component 315 is set to be less than or equal to 500 W / (m·K) to reduce the excessive waste of the thermal conductivity of the heat-conducting component 315, which is beneficial to reducing the manufacturing cost of the heat-conducting component 315.

[0240] In some embodiments, see Figure 7 , Figure 9 and Figure 17 As shown, a groove 3152 is recessed on the side of the heat-conducting element 315 facing the mounting cavity 311a, and at least a portion of the temperature sensing element 312 is accommodated in the groove 3152. That is, the surface of the heat-conducting element 315 facing the mounting cavity 311a in the first direction X is provided with a groove 3152 for the temperature sensing element 312 to be inserted.

[0241] In this embodiment, by providing a groove 3152 on the surface of the heat-conducting element 315 facing the mounting cavity 311a, and the temperature detection element 312 being inserted into the groove 3152, the temperature transferred from the battery cell 22 to the heat-conducting element 315 can be transferred to the temperature detection element 312 from multiple directions through the groove wall of the groove 3152. This increases the heat transfer path between the heat-conducting element 315 and the temperature detection element 312, thereby further improving the effect of temperature transfer from the battery cell 22 to the temperature detection element 312, and further improving the accuracy of the temperature detection element 312 in detecting the temperature of the battery cell 22.

[0242] In some embodiments, see Figure 6 and Figure 7 As shown, the temperature sampling component 31 may also include thermally conductive adhesive 316, which is located inside the mounting cavity 311a and covers the outside of the temperature sensing element 312, and is connected to the thermally conductive element 315.

[0243] The thermally conductive adhesive 316 is wrapped around the outside of the temperature sensing element 312. The thermally conductive adhesive 316 can be in direct contact with the temperature sensing element 312 or indirect contact. For example, an insulating adhesive 317 is also provided between the thermally conductive adhesive 316 and the temperature sensing element 312.

[0244] For example, the thermally conductive adhesive 316 may be a silicone thermally conductive adhesive, an epoxy resin-based thermally conductive adhesive, a polyurethane-based thermally conductive adhesive, an acrylic-based thermally conductive adhesive, or a thermally conductive structural adhesive, etc.

[0245] In this embodiment, by providing thermally conductive adhesive 316 within the mounting cavity 311a, and having the thermally conductive adhesive 316 covering the outside of the temperature sensing element 312 and connected to the thermally conductive element 315, the thermally conductive adhesive 316 reduces the air gap between the temperature sensing element 312 and the thermally conductive element 315, thereby reducing the contact thermal resistance between them. This enhances the heat transfer efficiency between the temperature sensing element 312 and the thermally conductive element 315, allowing the temperature on the battery cell 22 to be better transferred to the temperature sensing element 312 through the thermally conductive element 315, further improving the accuracy of the temperature sensing element 312 in detecting the temperature of the battery cell 22. Furthermore, the thermally conductive adhesive 316 also provides a certain degree of fixation and cushioning for the temperature sensing element 312 within the mounting cavity 311a, reducing the risk of impacts or scratches during use, thus improving the service life and operational stability of the temperature sensing element 312.

[0246] In some embodiments, see Figure 6 and Figure 7As shown, the temperature sampling component 31 may also include an insulating adhesive 317, which covers the outside of the temperature sensing element 312, and a thermally conductive adhesive 316 covers the outside of the insulating adhesive 317.

[0247] The insulating adhesive 317 covers the outside of the temperature sensing element 312, and the thermally conductive adhesive 316 covers the outside of the insulating adhesive 317, such that the insulating adhesive 317 is at least partially located between the thermally conductive adhesive 316 and the temperature sensing element 312, so that the thermally conductive adhesive 316 is in indirect contact with the temperature sensing element 312 through the insulating adhesive 317.

[0248] For example, insulating adhesive 317 may be silicone insulating adhesive, epoxy resin insulating adhesive, polyurethane insulating adhesive, acrylic insulating adhesive, hot melt insulating adhesive or inorganic insulating adhesive, etc.

[0249] In this embodiment, by covering the outside of the temperature sensing element 312 with insulating adhesive 317, and the thermally conductive adhesive 316 being a structure covering the outside of the insulating adhesive 317, the thermally conductive adhesive 316 can achieve good heat transfer between the thermally conductive element 315 and the temperature sensing element 312, while also sealing and insulating the temperature sensing element 312. This helps reduce the risk of short circuit between the temperature sensing element 312 and the thermally conductive element 315 during use, and also helps reduce the corrosion of the temperature sensing element 312 by moisture and other phenomena, thereby improving the reliability and service life of the temperature sensing element 312.

[0250] According to some embodiments of this application, see Figure 6 , Figure 7 and Figure 9 As shown, the mounting cavity 311a penetrates the mounting bracket 311 and forms a second through-hole 311c opposite to the first through-hole 311b. The connecting wire 313 passes through the second through-hole 311c and extends into the mounting cavity 311a. The temperature sampling assembly 31 may also include a sealant 318, which is disposed in the mounting cavity 311a and located between the second through-hole 311c and the thermally conductive adhesive 316, and the sealant 318 covers the outside of the connecting wire 313.

[0251] In this embodiment, the mounting cavity 311a penetrates the mounting frame 311 and forms a second through-hole 311c opposite to the first through-hole 311b. That is, the mounting cavity 311a has two ends that penetrate the mounting frame 311 in its extending direction, forming the first through-hole 311b and the second through-hole 311c on the mounting frame 311. The first through-hole 311b is located at the end of the mounting frame 311 in the first direction X, closer to the battery cell 22. In an embodiment where the mounting frame 311 includes a base 3111 and an extension 3112, the mounting cavity 311a extends along the extending direction of the extension 3112 into the base 3111 and penetrates the base 3111 to form the first through-hole 311b. The mounting cavity 311a also penetrates the end of the extension 3112 away from the base 3111 and forms the second through-hole 311c.

[0252] The sealant 318 is disposed in the mounting cavity 311a and located between the second through-hole 311c and the thermally conductive adhesive 316. The sealant 318 covers the outside of the connecting wire 313. That is, the sealant 318 is a structure in which the sealant is poured into the mounting cavity 311a from the second through-hole 311c. The sealant 318 fills the part of the mounting cavity 311a located between the thermally conductive adhesive 316 and the second through-hole 311c and covers the part of the connecting wire 313 extending into the mounting cavity 311a, so as to seal the opening.

[0253] For example, the sealant 318 can be made of various materials, such as epoxy resin, silicone rubber, polyurethane resin, or inorganic adhesive. It should be noted that in the embodiments of this application, the materials of the sealant 318 and the insulating adhesive 317 can be the same or different.

[0254] In this embodiment, the mounting cavity 311a is configured to penetrate the mounting bracket 311 and form a second through-hole 311c opposite to the first through-hole 311b. The connecting line 313 passes through the second through-hole 311c and extends into the mounting cavity 311a to connect with the temperature sensing element 312. This reduces the assembly difficulty between the connecting line 313 and the temperature sensing element 312, as well as between the connecting line 313 and the mounting bracket 311. Furthermore, by providing a sealant 318 in the mounting cavity 311a, and by positioning the sealant 318 between the second through-hole 311c and the thermally conductive adhesive 316 and covering the outside of the connecting line 313, the sealant 318 can also seal the area of ​​the mounting cavity 311a between the thermally conductive adhesive 316 and the second through-hole 311c. This helps to reduce the phenomenon of moisture or impurities entering the mounting cavity 311a and corroding or contaminating the temperature sensing element 312 and the thermally conductive adhesive 316, thereby further improving the reliability and service life of the temperature sampling component 31.

[0255] According to some embodiments of this application, see Figure 6 and Figure 7 As shown, the temperature sampling component 31 may also include insulating adhesive 317, which covers the outside of the temperature sensing element 312.

[0256] The temperature sensing element 312 includes a body 3121 and two terminals 3122 with opposite polarities. The body 3121 is used to detect the temperature of the battery cell 22. Both terminals 3122 are connected to the body 3121 to input or output the positive and negative terminals of the body 3121. Correspondingly, there are two connecting wires 313, each of which is electrically connected to one terminal 3122. Both connecting wires 313 are electrically connected to the wiring harness assembly 32 to realize the electrical circuit between the temperature sensing element 312 and the battery management system.

[0257] In this embodiment, the insulating adhesive 317 is wrapped around the outside of the temperature sensing element 312. The insulating adhesive 317 not only wraps the body 3121 of the temperature sensing element 312, but also wraps the two terminals 3122 of the temperature sensing element 312.

[0258] In this embodiment, by covering the outside of the temperature sensing element 312 with insulating adhesive 317, the insulating adhesive 317 can seal and insulate the temperature sensing element 312, which helps to reduce the risk of short circuit between the temperature sensing element 312 and other components during use, and also helps to reduce the corrosion of the temperature sensing element 312 by moisture or impurities, thereby improving the reliability and service life of the temperature sensing element 312.

[0259] In some embodiments, refer to Figure 6 and Figure 7 Please refer to further details. Figure 18 , Figure 18 This is a schematic diagram of the assembly of the temperature sensing element 312 and the connecting wire 313 of the temperature sampling assembly 31 provided in some embodiments of this application. The connecting wire 313 includes a conductor 3131 and an insulator 3132. A portion of the conductor 3131 is located inside the insulator 3132, and a portion of the conductor 3131 extends out of the outside of the insulator 3132 and is connected to the temperature sensing element 312. Insulating adhesive 317 covers the outside of the portion of the conductor 3131 that extends out of the insulator 3132.

[0260] The temperature sampling component 31 includes two connecting lines 313, each of which includes a conductor 3131 and an insulator 3132. The insulator 3132 is a structure that covers the outside of the conductor 3131, that is, the insulator 3132 is an insulating shell for the conductor 3131, so that the conductor 3131 has a portion exposed to the insulator 3132, so as to be connected to the terminal 3122 of the temperature detection element 312.

[0261] In this embodiment, the conductors 3131 of the two connecting lines 313 are respectively connected to the two terminals 3122 of the temperature sensing element 312 to realize the electrical connection between the two connecting lines 313 and the temperature sensing element 312, thereby realizing the electrical circuit between the temperature sensing element 312 and the battery management system.

[0262] For example, conductor 3131 and terminal 3122 are welded together.

[0263] It should be noted that the insulating adhesive 317 covers not only the outside of the temperature sensing element 312 and the outside of the portion of the conductor 3131 extending out of the insulator 3132, but also the welding position of the terminal 3122 and the conductor 3131.

[0264] In this embodiment, the connecting line 313 includes a conductor 3131 and an insulator 3132 covering the conductor 3131. By setting a portion of the conductor 3131 to extend beyond the outside of the insulator 3132 and connect it to the temperature sensing element 312, the difficulty of electrically connecting the connecting line 313 and the temperature sensing element 312 is reduced. In addition, by setting the insulating adhesive 317 to also cover the outside of the portion of the conductor 3131 extending beyond the insulator 3132, the insulating adhesive 317 can both seal and insulate the temperature sensing element 312, and also insulate the portion of the conductor 3131 connected to the temperature sensing element 312, thereby reducing the risk of short circuit between the conductor 3131 and other components and further improving the reliability of the temperature sampling component 31.

[0265] According to some embodiments of this application, see Figure 3 and Figure 4 As shown, the fastener 24 may also be provided with a second buckle 242. The second buckle 242 and the first buckle 241 are arranged at intervals. The second buckle 242 abuts against the mounting bracket 311 along the first direction X. The second buckle 242 and the first buckle 241 are configured to cooperate to restrict the mounting bracket 311 from disengaging from the battery cell assembly 20 along the first direction X in a direction away from the battery cell 22.

[0266] The second latch 242 includes a second main body 2421 and a second pressing part 2422. The second main body 2421 is connected to the fixing member 24, and the second pressing part 2422 is connected to the end of the second main body 2421 away from the fixing member 24 in the first direction X. The second pressing part 2422 abuts against the extension 3112 of the mounting bracket 311 in the first direction X to restrict the mounting bracket 311 from disengaging from the fixing member 24 in the first direction X away from the battery cell 22. Correspondingly, the first latch 241 is a structure that presses down on the part of the mounting bracket 311 through the elastic component 314, and the second latch 242 is a structure that directly presses down on the part of the mounting bracket 311. The second latch 242 and the first latch 241 are configured to cooperate to restrict the mounting bracket 311 from disengaging from the battery cell assembly 20 in the first direction X away from the battery cell 22.

[0267] For example, the second buckle 242 and the first buckle 241 are arranged at intervals along the third direction Z, and both the second buckle 242 and the first buckle 241 are connected to the side of the fastener 24 facing away from the outer shell of the battery cell 22 in the first direction X. Correspondingly, the mounting bracket 311 is a structure that is inserted between the first main body portion 2411 of the first buckle 241 and the second main body portion 2421 of the second buckle 242, such that the base 3111 of the mounting bracket 311 is located between the first main body portion 2411 of the first buckle 241 and the second main body portion 2421 of the second buckle 242 in the third direction Z.

[0268] In this embodiment, by providing a second buckle 242 on the fixing member 24 that is spaced apart from the first buckle 241, the second buckle 242 abuts against the mounting bracket 311 along the first direction X, and the second buckle 242 and the first buckle 241 cooperate to assemble the mounting bracket 311, so that the first buckle 241 and the second buckle 242 can press down and limit different areas of the mounting bracket 311, thereby further improving the structural stability of the temperature sampling component 31 installed on the fixing member 24.

[0269] According to some embodiments of this application, see Figure 3 As shown, the battery cell 22 includes a housing, an electrode assembly, and electrode terminals. The electrode assembly is housed within the housing, and the electrode terminals are disposed at one end of the housing in the first direction X. The battery cell assembly 20 also includes a busbar 21, which is located on one side of the battery cell 22 in the first direction X and is electrically connected to the electrode terminals. At least a portion of the fixing member 24 is disposed between the busbar 21 and the housing in the first direction X.

[0270] The casing, electrode assembly, and electrode terminals of the battery cell 22 are not shown in the figure. The specific structure of the battery cell 22 can be found in related technologies and will not be described in detail here.

[0271] At least a portion of the fixing member 24 is disposed between the busbar component 21 and the housing in the first direction X. That is, the busbar component 21 and the housing of the battery cell 22 are respectively located on both sides of the fixing member 24 in the first direction X. Correspondingly, in the embodiment where the first latch 241 and the second latch 242 are disposed on the side of the fixing member 24 away from the housing of the battery cell 22, the busbar component 21, the first latch 241 and the second latch 242 are all located on the same side of the fixing member 24 in the first direction X.

[0272] As an example, the fastener 24 is the separator 23 of the battery cell assembly 20. Of course, in other embodiments, the fastener 24 and the separator 23 can also be two independent components.

[0273] In this embodiment, by configuring at least a portion of the fastener 24 with the first buckle 241 as a structure located between the busbar 21 and the outer casing of the battery cell 22 in the first direction X, the busbar 21 and the outer casing can also limit the fastener 24 along the first direction X, which helps to improve the assembly stability of the fastener 24, thereby further improving the effect of the first buckle 241 pressing the mounting bracket 311 onto the battery cell 22 through the elastic component 314.

[0274] In some embodiments, the fastener 24 is made of an insulating material and is configured to insulate and isolate the busbar component 21 and the housing.

[0275] For example, the material of the fastener 24 may be rubber, silicone or plastic, etc.

[0276] In this embodiment, by setting the fastener 24 as an insulating material, the fastener 24 can provide assembly requirements for the temperature sampling component 31 while also serving as an insulating barrier between the busbar component 21 and the outer casing of the battery cell 22. This allows the temperature sampling component 31 to be assembled on the battery cell assembly 20 while reducing the risk of short circuit between the busbar component 21 and the outer casing of the battery cell 22.

[0277] According to some embodiments of this application, this application also provides an electrical device, which includes a battery device 100 of any of the above schemes, and the battery device 100 is used to provide electrical energy to the electrical device.

[0278] The electrical device can be any of the aforementioned devices or systems that utilize battery device 100.

[0279] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0280] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery device, characterized by, include: A battery cell assembly includes a fixing member and a plurality of battery cells, the fixing member being disposed on one side of the plurality of battery cells in a first direction, and the fixing member being provided with a first latch; and A temperature sampling assembly includes a mounting bracket, a temperature sensing element, and a connecting wire. The mounting bracket has an internal mounting cavity, and the temperature sensing element is disposed within the mounting cavity. The temperature sensing element is configured to detect the temperature of the battery cell. One end of the connecting wire is connected to the temperature sensing element, and the other end is located outside the mounting cavity and is used for electrical connection with the battery management system. The temperature sampling component further includes an elastic component, which is mounted on the mounting frame. The first buckle abuts against the elastic component along the first direction to press the mounting frame onto the battery cell. The elastic component includes a spring sheet and a guide member. The spring sheet is mounted on the mounting frame, and the first buckle abuts against the spring sheet along the first direction. The spring sheet is bent to form a first abutting portion, a bent portion, and a second abutting portion. Along the first direction, the first abutting portion and the second abutting portion are spaced apart, with the first abutting portion abutting against the first buckle and the second abutting portion abutting against the mounting frame. The bent portion connects the first abutting portion and the second abutting portion at its two ends in its extension direction, and is mounted on the mounting frame. The guide member is telescopically disposed between the first abutting portion and the mounting frame along the first direction, with both ends of the guide member abutting against the first abutting portion and the mounting frame, respectively.

2. The battery device according to claim 1, characterized by The bending portion includes a first straight section, a first arc-shaped section, and a second straight section connected in sequence. The first straight section is connected to the first abutting portion, and the second straight section is connected to the second abutting portion. The second straight section is mounted on the mounting bracket.

3. The battery device of claim 2, wherein, The mounting bracket includes a base and an extension connected to each other, the extension being obliquely disposed on the base, and at least a portion of the mounting cavity being located within the extension; The second abutting portion abuts against the base along the first direction, the second straight section is mounted on the extension portion, and the extension direction of the second straight section is parallel to the extension direction of the extension portion.

4. The battery device of claim 2, wherein The second straight section is provided with reinforcing ribs, and the extending direction of the reinforcing ribs is parallel to the extending direction of the second straight section.

5. The battery device of claim 1, wherein The spring sheet further includes two clamping portions, which are connected to both ends of the bent portion in the second direction. The two clamping portions are located on both sides of the mounting frame in the second direction. The two clamping portions are configured to cooperate in clamping the mounting frame. The width direction of the bent portion is parallel to the second direction, and the second direction is perpendicular to the first direction.

6. The battery device of claim 5, wherein, The clamping part is provided with an assembly hole, and the mounting bracket is provided with a snap-fit ​​part, which is inserted into the assembly hole.

7. The battery device of claim 5, wherein The mounting bracket is provided with a first limiting part and a second limiting part, which are arranged at intervals along a third direction. The clamping part is disposed between the first limiting part and the second limiting part in the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

8. The battery device of claim 1, wherein The guide includes a first guide portion, a second guide portion, and a first elastic member. One end of the first guide portion in the first direction abuts against the mounting bracket. The second guide portion is movably disposed on the first guide portion along the first direction, and one end of the second guide portion away from the mounting bracket in the first direction abuts against the first abutting portion. The two ends of the first elastic member in the first direction abut against the first guide portion and the second guide portion, respectively.

9. The battery device of claim 8, wherein, The first guide portion has a cavity inside, and the second guide portion is movably inserted into the cavity at one end away from the first abutment portion in the first direction. The first elastic member is disposed in the cavity.

10. The battery device of claim 8, wherein, The second abutting part is provided with a first through hole, and the first guide part passes through the first through hole along the first direction.

11. The battery device of claim 10, wherein, The outer peripheral surface of the first guide portion is provided with a third limiting portion, and the third limiting portion abuts against the side of the second abutting portion away from the first abutting portion in the first direction.

12. The battery device of claim 8, wherein, The first abutting portion is bent to form a third straight segment, a second arc segment and a fourth straight segment connected in sequence. The third straight segment is connected to the bent portion, and the fourth straight segment is located on the side of the third straight segment facing the second abutting portion in the first direction. Along the first direction, the third straight section abuts against the first buckle, and the end of the second guide portion away from the mounting bracket abuts against the fourth straight section.

13. The battery device of claim 12, wherein, The fourth straight section is provided with a second through hole. Along the first direction, the second guide portion abuts against one end of the fourth straight section and is provided with a plug-in portion, which is inserted into the second through hole.

14. The battery device of claim 1, wherein, The mounting bracket has an abutting surface, and along the first direction, the end of the guide member away from the first abutting portion abuts against the abutting surface; The abutting surface is provided with two fourth limiting portions, which are spaced apart along the second direction. The guide member is located between the two fourth limiting portions in the second direction, and the second abutting portion abuts against the two fourth limiting portions along the first direction. The width direction of the bent portion is parallel to the second direction, and the second direction is perpendicular to the first direction.

15. The battery device of claim 1, wherein, The elastic component further includes a second elastic member, which is disposed between the first abutment portion and the second abutment portion along the first direction, and the two ends of the second elastic member abut against the first abutment portion and the second abutment portion, respectively.

16. The battery device of claim 15, wherein, The second elastic element is sleeved on the outside of the guide element.

17. The battery device of any one of claims 1-16, wherein, The mounting cavity extends through the mounting bracket at one end near the battery cell in the first direction and forms a first through-hole. The temperature sampling component further includes a thermally conductive element, which is connected to the mounting bracket and blocks the first through-hole. The thermally conductive element abuts against the battery cell along the first direction, and the thermal conductivity of the thermally conductive element is greater than that of the mounting bracket.

18. The battery device of claim 17, wherein, The thermal conductivity of the heat-conducting component is 80 W / (m·K)-500 W / (m·K).

19. The battery device of claim 17, wherein, The heat-conducting component has a recessed groove on the side facing the mounting cavity, and at least a portion of the temperature sensing component is accommodated within the groove.

20. The battery device of claim 17, wherein, The temperature sampling component also includes thermally conductive adhesive, which is located inside the mounting cavity and covers the outside of the temperature sensing element, and is connected to the thermally conductive element.

21. The battery device of claim 20, wherein, The temperature sampling component also includes an insulating adhesive, which covers the outside of the temperature sensing element, and the thermally conductive adhesive covers the outside of the insulating adhesive.

22. The battery device of claim 20, wherein, The mounting cavity extends through the mounting frame and forms a second through opening opposite to the first through opening; the connecting line passes through the second through opening and extends into the mounting cavity. The temperature sampling component further includes a sealant, which is disposed in the mounting cavity and located between the second through-hole and the thermally conductive adhesive, and the sealant covers the outside of the connecting wire.

23. The battery device of any one of claims 1-16, wherein, The temperature sampling component also includes insulating adhesive, which covers the outside of the temperature sensing element.

24. The battery device of claim 23, wherein, The connecting line includes a conductor and an insulator, a portion of the conductor is located within the insulator, and a portion of the conductor extends out of the outside of the insulator and is connected to the temperature sensing element; The insulating adhesive covers the outer side of the portion of the conductor that extends out of the insulator.

25. The battery device of any one of claims 1-16, wherein, The fastener is further provided with a second buckle, which is arranged at intervals with the first buckle. The second buckle abuts against the mounting bracket along the first direction. The second buckle and the first buckle are configured to cooperate to restrict the mounting bracket from disengaging from the battery cell assembly along the first direction away from the battery cell.

26. The battery device of any one of claims 1-16, wherein, The battery cell includes a housing, an electrode assembly, and electrode terminals. The electrode assembly is housed within the housing, and the electrode terminals are disposed at one end of the housing in the first direction. The battery cell assembly further includes a busbar component, which is located on one side of the battery cell in the first direction and is electrically connected to the electrode terminal. At least a portion of the fixing member is disposed between the busbar component and the housing in the first direction.

27. The battery device of claim 26, wherein, The fastener is made of an insulating material and is configured to insulate the busbar and the housing.

28. An electrical device, comprising: Includes a battery device as described in any one of claims 1-27, the battery device being used to provide electrical energy.

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