Battery and electric equipment

Abstract

The invention provides a battery and electric equipment, the battery comprises a shell, at least one pole core, a lead-out piece and at least one elastic metal heat conduction piece, and a pole column is arranged on the shell in a penetrating manner; the pole core is arranged in the shell, a pole lug is formed at the end part of the pole core, and the pole lug is electrically connected with the pole column through a leading-out sheet; one end of the elastic metal heat conduction piece is connected with the tab and / or the lead-out sheet, and the other end of the elastic metal heat conduction piece is in insulated connection with the shell. According to the battery, the tabs and / or the lead-out sheets are connected with the shell through the elastic metal heat conduction pieces, so that a heat transfer path between the pole core and the shell is increased, the temperature of the battery during working is conveniently and uniformly dispersed onto the shell, the temperature distribution condition of the battery during working is improved, and the available power and the cycle life of the battery are improved.

Description

Technical Field

[0001] The present application relates to battery manufacturing technology, and in particular to a battery and electrical equipment. Background Art

[0002] A battery is an energy conversion device that converts chemical energy into electrical energy and is widely used in a variety of electrical devices. Due to the differences in the composition of materials in different areas of the battery, the temperature distribution of the battery during operation is not uniform, which may affect the available power and cycle life of the battery. Summary of the invention

[0003] In order to overcome the above-mentioned defects in the related art, the purpose of the present application is to provide a battery and an electrical device, which is conducive to improving the temperature distribution of the battery during operation, thereby increasing the available power and cycle life of the battery.

[0004] In one aspect, the present application provides a battery, comprising:

[0005] A shell, wherein a pole is provided on the shell;

[0006] At least one pole core, the pole core is arranged in the shell, and a pole ear is formed at the end of the pole core;

[0007] A lead-out plate, through which the pole lug is electrically connected to the pole;

[0008] At least one elastic metal heat-conducting member, one end of the elastic metal heat-conducting member is connected to the pole ear and / or the lead-out sheet, and the other end of the elastic metal heat-conducting member is insulated and connected to the shell.

[0009] In a possible implementation, the elastic metal heat conductive member includes foam metal or metal spring.

[0010] In a possible implementation, the foam metal includes foam nickel, foam copper or foam titanium; and the metal shrapnel includes an aluminum shrapnel or a copper shrapnel.

[0011] In a possible implementation, the elastic deformation range of the elastic metal heat conductive member is 0.1%-30%.

[0012] In a possible implementation, the capacity of the battery is greater than or equal to 1 Ah.

[0013] In a possible implementation, one end of the elastic metal heat conductor abuts against the pole lug and / or lead-out plate; or, one end of the elastic metal heat conductor is welded to the pole lug and / or lead-out plate; or, one end of the elastic metal heat conductor is insulated and connected to the pole lug and / or lead-out plate.

[0014] In a possible implementation, the shell includes one pole core and two elastic metal heat conductive members, one of the two elastic metal heat conductive members is a first elastic metal heat conductive member, and the other is a second elastic metal heat conductive member, and the shell is further provided with a first insulating member and a second insulating member, and the first insulating member and the second insulating member are respectively located on two opposite inner walls of the shell;

[0015] The first end of the first elastic metal heat conductor abuts against the first insulating member, and the second end of the first elastic metal heat conductor abuts against the pole ear; the first end of the second elastic metal heat conductor abuts against the lead-out piece, and the second end of the second elastic metal heat conductor abuts against the second insulating member.

[0016] In a possible implementation manner, the second end of the first elastic metal heat conductor is welded to the electrode tab, and / or the first end of the second elastic metal heat conductor is welded to the lead-out plate.

[0017] In a possible implementation, a third insulating member and a fourth insulating member are further included, the second end of the first elastic metal heat conductor abuts against the pole ear through the third insulating member, and the first end of the second elastic metal heat conductor abuts against the lead-out plate through the fourth insulating member.

[0018] In a possible implementation, the shell includes two pole cores and two elastic metal heat conductive members; one of the two pole cores is a first pole core and the other is a second pole core, the first pole core is provided with a first pole lug, the second pole core is provided with a second pole lug, the lead-out piece is located between the first pole lug and the second pole lug and is electrically connected to both the first pole lug and the second pole lug; one of the two elastic metal heat conductive members is a first elastic metal heat conductive member and the other is a second elastic metal heat conductive member; the shell is further provided with a first insulating member and a second insulating member, and the first insulating member and the second insulating member are respectively located on two opposite inner walls of the shell;

[0019] The first end of the first elastic metal heat conductor abuts against the first insulating member, and the second end of the first elastic metal heat conductor abuts against the first pole ear; the first end of the second elastic metal heat conductor abuts against the second pole ear, and the second end of the second elastic metal heat conductor abuts against the second insulating member.

[0020] In a possible implementation manner, the second end of the first elastic metal heat conductor is welded to the first electrode tab, and / or the first end of the second elastic metal heat conductor is welded to the second electrode tab.

[0021] In a possible implementation, a third insulating member and a fourth insulating member are further included, the second end of the first elastic metal heat conductor abuts against the first pole lug through the third insulating member, and the first end of the second elastic metal heat conductor abuts against the second pole lug through the fourth insulating member.

[0022] In a possible implementation, the shell includes one pole core and two elastic metal heat conductive members; the pole ear is bent to form a first groove and a second groove, and the first groove is arranged close to the pole core; one of the two elastic metal heat conductive members is a first elastic metal heat conductive member, and the other is a second elastic metal heat conductive member; the shell is further provided with a first insulating member and a second insulating member, and the first insulating member and the second insulating member are respectively located on two opposite inner walls of the shell;

[0023] At least part of the first elastic metal heat conductive member abuts in the first groove, one end of the first elastic metal heat conductive member facing away from the first groove abuts against the first insulating member, and the first elastic metal heat conductive member also abuts against the pole core; at least part of the second elastic metal heat conductive member abuts in the second groove, and one end of the second elastic metal heat conductive member facing away from the second groove abuts against the second insulating member.

[0024] In a possible implementation manner, the first elastic metal heat conductive member is welded to the first groove, and / or the second elastic metal heat conductive member is welded to the second groove.

[0025] In a possible implementation, a third insulating member and a fourth insulating member are further included, the third insulating member is arranged in the first groove, the fourth insulating member is arranged in the second groove, at least part of the first elastic metal heat conductive member abuts against the third insulating member, and at least part of the second elastic metal heat conductive member abuts against the fourth insulating member.

[0026] On the other hand, the present application provides an electrical device, comprising any battery as described above.

[0027] The present application provides a battery and an electrical device, wherein the battery comprises a shell, at least one pole core, a lead-out sheet and at least one elastic metal heat-conducting member, wherein a pole column is pierced through the shell; the pole core is arranged in the shell, and a pole ear is formed at the end of the pole core, and the pole ear is electrically connected to the pole column through the lead-out sheet; one end of the elastic metal heat-conducting member is connected to the pole ear and / or the lead-out sheet, and the other end of the elastic metal heat-conducting member is insulated and connected to the shell. The present application connects the pole ear and / or the lead-out sheet to the shell through an elastic metal heat-conducting member, thereby increasing the heat transfer path between the pole core and the shell, facilitating the uniform distribution of the temperature of the battery during operation to the shell, improving the temperature distribution of the battery during operation, and increasing the available power and cycle life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technical descriptions. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A simplified structural diagram of a battery provided in one embodiment of the present application;

[0030] Figure 2 In one embodiment Figure 1 AA section view;

[0031] Figure 3 In another embodiment Figure 1 AA section view;

[0032] Figure 4 In yet another embodiment Figure 1 AA section view;

[0033] Figure 5 In another embodiment Figure 1 AA section view;

[0034] Figure 6 A simplified structural diagram of a battery provided in another embodiment of the present application;

[0035] Figure 7 In one embodiment Figure 6 BB cross-sectional view.

[0036] Reference numerals:

[0037] 100-shell; 110-pole;

[0038] 200-pole core; 201-first pole core; 202-second pole core; 210-pole ear; 2101-first groove; 2102-second groove; 211-first pole ear; 212-second pole ear;

[0039] 300-lead-out piece;

[0040] 400 - elastic metal heat conducting member; 410 - first elastic metal heat conducting member; 420 - second elastic metal heat conducting member;

[0041] 510 - first insulating member; 520 - second insulating member; 530 - third insulating member; 540 - fourth insulating member. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0043] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0044] As described in the background technology, the temperature distribution of the battery in the scheme of the related technology is not uniform when it is working. The temperature in some areas is higher, while the temperature in other areas is lower, which may affect the available power and cycle life of the battery. For example, when the battery is used at room temperature, under the condition of a larger current, the temperature of the area near the upper pole of the battery is higher and the heat generation is larger; while the temperature in the center area of ​​the battery is lower; the area of ​​the pole core inside the battery close to the pole shares a large current, has a higher temperature, accelerates the aging rate, and is prone to lithium precipitation, which may affect the available power and cycle life of the battery. For another example, when the battery is used at low temperatures, under the condition of a larger current, the pole core in the battery increases due to electrochemical polarization, generates more heat and has a higher temperature, making the temperature in the center area of ​​the battery higher; while the temperature in the area near the upper pole of the battery is lower; the center area of ​​the pole core shares a large current, accelerates the aging rate, and is prone to lithium precipitation, which may affect the available power and cycle life of the battery.

[0045] In view of this, the embodiments of the present application are intended to provide a battery and an electrical device, by providing an elastic metal heat conductor to connect the pole ear and / or lead-out plate to the shell, thereby increasing the heat transfer path between the pole core and the shell, facilitating the uniform distribution of the temperature of the battery during operation to the shell, improving the temperature distribution of the battery during operation, and increasing the available power and cycle life of the battery.

[0046] The contents of the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings so that those skilled in the art can understand the contents of the present application in more detail.

[0047] Please refer to Figure 1-Figure 7 , this embodiment provides a battery, including:

[0048] The housing 100 is provided with a pole 110. For example, the housing 100 may be a metal housing such as an aluminum shell, and the housing 100 may include a body and a cover plate. The body may be provided with an opening, and the cover plate is provided at the opening of the body, and the pole 110 may be provided on the cover plate. The pole 110 may include a positive pole and a negative pole, and the battery is electrically connected to external parts through the positive pole and the negative pole.

[0049] At least one pole core 200 is disposed in the housing 100. The pole core 200 includes a plurality of positive plates, a plurality of negative plates, a separator, an electrolyte, etc. The separator is disposed between adjacent positive plates and negative plates, and the electrolyte is filled in the pole core 200. A pole tab 210 is formed at the end of the pole core 200. The pole tab 210 may include a positive pole tab led from a plurality of positive plates, and a negative pole tab led from a plurality of negative plates.

[0050] The lead-out sheet 300 and the tab 210 are electrically connected to the pole 110 through the lead-out sheet 300. It is understandable that since the pole 110 may include a positive pole and a negative pole, and the tab 210 may include a positive tab and a negative tab, two lead-out sheets 300 may be provided, and the two lead-out sheets 300 are respectively connected to the positive tab and the positive pole, and the negative tab and the negative pole. Since the structures of the two are basically the same, the present embodiment Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 In the figure, only the connection structure between the pole 110 and the pole ear 210 on one side is taken as an example for description.

[0051] At least one elastic metal heat conductive member 400, one end of the elastic metal heat conductive member 400 is connected to the pole tab 210 and / or the lead-out sheet 300, and the other end of the elastic metal heat conductive member 400 is insulated and connected to the housing 100. The elastic metal heat conductive member 400 can be integrally extended or shortened with the expansion or contraction of the battery during use, thereby forming a stable heat transfer path between the pole tab 210 and / or the lead-out sheet 300 and the housing 100.

[0052] From the above description, it can be known that in this embodiment, the pole ear 210 and / or the lead-out piece 300 are connected to the shell 100 through the elastic metal heat conductor 400, thereby increasing the heat transfer path between the pole core 200 and the shell 100, facilitating the uniform distribution of the temperature of the battery during operation to the shell 100, improving the temperature distribution of the battery during operation, and increasing the available power and cycle life of the battery.

[0053] For example, when the battery is used at room temperature, under the condition of relatively large current, the elastic metal heat conductor 400 can quickly conduct the heat from the area near the pole 110 to the center area of ​​the battery, avoiding excessive temperature in the area near the pole 110, thereby making the temperature distribution on the battery surface more uniform, which is beneficial to improving the available power and cycle life of the battery.

[0054] For example, when the battery is used at low temperatures, under conditions of relatively large current, the elastic metal heat conductor 400 can quickly conduct the heat from the center area of ​​the battery to the area near the pole 110, thereby preventing the temperature in the center area of ​​the battery from being too high, thereby making the temperature distribution on the surface of the battery more uniform, which is beneficial to improving the available power and cycle life of the battery.

[0055] It can be understood that this embodiment improves the heat transfer of the battery through the above solution, which can make the battery temperature more uniform and the average temperature lower, thereby reducing the energy consumption of the external cooling system and reducing carbon emissions.

[0056] In this embodiment, the elastic metal heat conductor 400 includes an elastic material such as foam metal or metal shrapnel. Among them, the foam metal material has the characteristics of flexible design of shape and size, good elasticity, light weight, high electrical conductivity, self-support, and reusability. It can be flexibly arranged between the pole ear 210 and the shell 100 or between the lead-out sheet 300 and the shell 100 to achieve good contact and ensure good heat transfer effect. The metal shrapnel has the characteristics of flexible design of shape and size, good elasticity, light weight, high electrical conductivity, self-support, and reusability. It can be flexibly arranged between the pole ear 210 and the shell 100 or between the lead-out sheet 300 and the shell 100 to achieve good contact and ensure good heat transfer effect.

[0057] Specifically, the foam metal may include foam nickel, foam copper or foam titanium. The metal spring may include an aluminum spring or a copper spring.

[0058] In this embodiment, the elastic deformation range of the elastic metal thermal conductor 400 is 0.1%-30%, thereby ensuring that the elastic metal thermal conductor 400 can be extended or shortened as a whole with the expansion or contraction of the battery during use, so as to form a stable heat transfer path between the tab 210 and / or the lead-out sheet 300 and the shell 100.

[0059] In this embodiment, the capacity of the battery is greater than or equal to 1 Ah.

[0060] Optionally, one end of the elastic metal heat conductor 400 in this embodiment can be in contact with the pole lug 210 and / or the lead-out sheet 300. When the heating power in the pole lug 210 and the lead-out sheet 300 region is high, the battery safety is ensured by the single-layer insulation setting between the elastic metal heat conductor 400 and the housing 100. At the same time, the elastic metal heat conductor 400 is used to increase the heat transfer path between the pole core 200 and the housing 100, reduce the impedance and heating power, improve the heat distribution state of the battery, and reduce the temperature difference in the battery.

[0061] Alternatively, one end of the elastic metal heat conductor 400 is welded to the pole lug 210 and / or the lead-out sheet 300. When the heat generation power in the area of ​​the pole lug 210 and the lead-out sheet 300 is extremely high, the single-layer insulation setting between the elastic metal heat conductor 400 and the housing 100 ensures the safety of the battery. By welding the elastic metal heat conductor 400 to the pole lug 210 and / or the lead-out sheet 300, the conductive path can be significantly increased compared to the above-mentioned abutment scheme, and the contact resistance between the elastic metal heat conductor 400 and the pole lug 210 and / or the lead-out sheet 300 can be reduced, which greatly reduces the impedance and heat generation power, further improves the heat distribution state of the battery, and reduces the temperature difference in the battery.

[0062] Alternatively, one end of the elastic metal heat conductor 400 is insulated and connected to the pole tab 210 and / or the lead-out sheet 300. When the heating power in the pole tab 210 and the lead-out sheet 300 area is relatively low, the insulation setting of the elastic metal heat conductor 400 and the pole tab 210 and / or the lead-out sheet 300 can improve the safety of the battery, and at the same time, it can also increase the heat transfer path between the pole core 200 and the shell 100, thereby reducing the temperature difference in the battery.

[0063] Please continue to refer to Figure 1-Figure 4 In one possible embodiment, the battery may be a square battery. The shell 100 includes a pole core 200 and two elastic metal heat conductive members 400. The pole tab 210 may adopt a full pole tab structure (referring to using the entire surface of the battery's current collector as a pole tab); the pole tab 210 may be a positive pole tab or a negative pole tab. The elastic metal heat conductive member 400 may be made of foam metal or metal shrapnel. One of the two elastic metal heat conductive members 400 is a first elastic metal heat conductive member 410, and the other is a second elastic metal heat conductive member 420. The shell 100 also includes a first insulating member 510 and a second insulating member 520, which are respectively located on two opposite inner walls of the shell 100. The first insulating member 510 and the second insulating member 520 may both be made of polyethylene terephthalate (PET) tape or polyimide (PI) tape. The thickness of the first insulating member 510 and the second insulating member 520 can be set as required, for example, can be 0.03-0.1 mm.

[0064] like Figure 2As shown, in a possible implementation, the elastic metal heat conductor 400 can be made of foam metal, and the elastic metal heat conductor 400 is foamed nickel as an example for illustration. The first end of the first elastic metal heat conductor 410 abuts against the first insulating member 510, and the second end of the first elastic metal heat conductor 410 abuts against the pole ear 210, so that the first elastic metal heat conductor 410 is used to form a heat transfer path between the pole ear 210 and the shell 100, so as to evenly distribute the temperature of the battery during operation to the shell 100, improve the temperature distribution of the battery during operation, and increase the available power and cycle life of the battery. The first elastic metal heat conductor 410 can also reduce the heat generation power of the battery during operation, thereby reducing the heat generated by the battery.

[0065] The first end of the second elastic metal heat conductive member 420 is in contact with the lead-out sheet 300, and the second end of the second elastic metal heat conductive member 420 is in contact with the second insulating member 520. Thus, the second elastic metal heat conductive member 420 is used to form a heat transfer path between the lead-out sheet 300 and the housing 100, so as to evenly distribute the temperature of the battery during operation to the housing 100, improve the temperature distribution of the battery during operation, and increase the available power and cycle life of the battery. The second elastic metal heat conductive member 420 can also reduce the heat generation power of the battery during operation, thereby reducing the heat generated by the battery.

[0066] In other possible implementations, when the heating power in the area of ​​the pole tab 210 and the lead-out sheet 300 is extremely high, the second end of the first elastic metal heat conductive member 410 may be welded to the pole tab 210; and / or the first end of the second elastic metal heat conductive member 420 may be welded to the lead-out sheet 300. This further reduces the contact resistance between the first elastic metal heat conductive member 410 and the pole tab 210; and / or the contact resistance between the second elastic metal heat conductive member 420 and the lead-out sheet 300, greatly reduces the impedance and heating power, further improves the heat distribution state of the battery, and reduces the temperature difference in the battery.

[0067] Please continue to refer to Figure 3In another possible implementation, the elastic metal heat conductive member 400 may be made of foam metal, and the elastic metal heat conductive member 400 is illustrated as foam nickel in the figure. The battery also includes a third insulating member 530 and a fourth insulating member 540, and both the third insulating member 530 and the fourth insulating member 540 may be made of polyethylene terephthalate (PET) tape or polyimide (PI) tape. The second end of the first elastic metal heat conductive member 410 is abutted against the pole ear 210 through the third insulating member 530, and the first end of the second elastic metal heat conductive member 420 is abutted against the lead-out sheet 300 through the fourth insulating member 540. In this embodiment, the safety of the battery can be improved by insulating the first elastic metal heat conductive member 410 with the pole ear 210 and the second elastic metal heat conductive member 420 with the lead-out sheet 300, while the heat transfer path between the pole core 200 and the shell 100 can be increased to reduce the temperature difference in the battery.

[0068] During the assembly process of this embodiment, the first insulating member 510 and the second insulating member 520 may be firstly applied to the inner wall of the housing 100 , and the third insulating member 530 and the fourth insulating member 540 may be respectively applied to the tab 210 and the lead sheet 300 as required. When assembling the pole core 200 into the shell 100, automated equipment is used to clamp the first elastic metal heat conductive member 410 and the pole ear 210, and to clamp the second elastic metal heat conductive member 420 and the lead-out plate 300; during the assembly process, the shell 100 and the pole ear 210 press the first elastic metal heat conductive member 410, and the shell 100 and the lead-out plate 300 press the second elastic metal heat conductive member 420, so that the first elastic metal heat conductive member 410 and the second elastic metal heat conductive member 420 produce elastic deformation, thereby forming a heat transfer path between the pole ear 210 and the shell 100 using the first elastic metal heat conductive member 410, and forming a heat transfer path between the lead-out plate 300 and the shell 100 using the second elastic metal heat conductive member 420.

[0069] Please continue to refer to Figure 1 and Figure 4 In another possible implementation, the elastic metal heat conductive member 400 may also be a metal spring. The first end of the first elastic metal heat conductive member 410 abuts against the first insulating member 510, and the second end of the first elastic metal heat conductive member 410 abuts against the pole ear 210, so that the first elastic metal heat conductive member 410 is used to form a heat transfer path between the pole ear 210 and the shell 100, so as to evenly distribute the temperature of the battery during operation to the shell 100, improve the temperature distribution of the battery during operation, and increase the available power and cycle life of the battery. The first elastic metal heat conductive member 410 can also reduce the heat generation power of the battery during operation, thereby reducing the heat generated by the battery.

[0070] The first end of the second elastic metal heat conductive member 420 is in contact with the lead-out sheet 300, and the second end of the second elastic metal heat conductive member 420 is in contact with the second insulating member 520. Thus, the second elastic metal heat conductive member 420 is used to form a heat transfer path between the lead-out sheet 300 and the housing 100, so as to evenly distribute the temperature of the battery during operation to the housing 100, improve the temperature distribution of the battery during operation, and increase the available power and cycle life of the battery. The second elastic metal heat conductive member 420 can also reduce the heat generation power of the battery during operation, thereby reducing the heat generated by the battery.

[0071] In other possible implementations, when the heating power in the area of ​​the pole tab 210 and the lead-out sheet 300 is extremely high, the second end of the first elastic metal heat conductive member 410 may be welded to the pole tab 210; and / or the first end of the second elastic metal heat conductive member 420 may be welded to the lead-out sheet 300. This further reduces the contact resistance between the first elastic metal heat conductive member 410 and the pole tab 210; and / or the contact resistance between the second elastic metal heat conductive member 420 and the lead-out sheet 300, greatly reduces the impedance and heating power, further improves the heat distribution state of the battery, and reduces the temperature difference in the battery.

[0072] Please continue to refer to Figure 1 and Figure 5 In another possible embodiment, the battery may be a square battery. The housing 100 includes two pole cores 200 and two elastic metal heat conductive parts 400. One of the two pole cores 200 is a first pole core 201 and the other is a second pole core 202. The first pole core 201 is provided with a first pole ear 211, and the second pole core 202 is provided with a second pole ear 212. The first pole ear 211 and the second pole ear 212 may both adopt a full pole ear structure; the first pole ear 211 and the second pole ear 212 may both be positive pole ears or negative pole ears. The lead-out sheet 300 is located between the first pole ear 211 and the second pole ear 212 and is electrically connected to the first pole ear 211 and the second pole ear 212. The elastic metal heat conductive part 400 may be made of foamed metal or metal shrapnel. In the figure, the elastic metal heat conductive part 400 is foamed nickel as an example for illustration. One of the two elastic metal heat conductive members 400 is a first elastic metal heat conductive member 410, and the other is a second elastic metal heat conductive member 420. A first insulating member 510 and a second insulating member 520 are also provided in the housing 100, and the first insulating member 510 and the second insulating member 520 are respectively located on two opposite inner walls in the housing 100. The first insulating member 510 and the second insulating member 520 can both be made of polyethylene terephthalate (PET) tape or polyimide (PI) tape. The thickness of the first insulating member 510 and the second insulating member 520 can be set as needed, for example, it can be 0.03-0.1 mm.

[0073] like Figure 5As shown, in a possible implementation, the first end of the first elastic metal heat conductive member 410 abuts against the first insulating member 510, and the second end of the first elastic metal heat conductive member 410 abuts against the first pole ear 211. Thus, the first elastic metal heat conductive member 410 is used to form a heat transfer path between the first pole ear 211 and the housing 100, so as to evenly distribute the temperature of the battery during operation to the housing 100, improve the temperature distribution of the battery during operation, and increase the available power and cycle life of the battery. The first elastic metal heat conductive member 410 can also reduce the heat generation power of the battery during operation, thereby reducing the heat generated by the battery.

[0074] The first end of the second elastic metal heat conductive member 420 is in contact with the second pole ear 212, and the second end of the second elastic metal heat conductive member 420 is in contact with the second insulating member 520. Thus, the second elastic metal heat conductive member 420 is used to form a heat transfer path between the second pole ear 212 and the housing 100, so as to evenly distribute the temperature of the battery during operation to the housing 100, improve the temperature distribution of the battery during operation, and increase the available power and cycle life of the battery. The second elastic metal heat conductive member 420 can also reduce the heat generation power of the battery during operation, thereby reducing the heat generated by the battery.

[0075] In other possible implementations, when the heating power of the pole tab 210 and the lead-out sheet 300 region is extremely high, the second end of the first elastic metal heat conductive member 410 may be welded to the first pole tab 211; and / or the first end of the second elastic metal heat conductive member 420 may be welded to the second pole tab 212. This further reduces the contact resistance between the first elastic metal heat conductive member 410 and the first pole tab 211; and / or the contact resistance between the second elastic metal heat conductive member 420 and the second pole tab 212, greatly reduces the impedance and heating power, further improves the heat distribution state of the battery, and reduces the temperature difference within the battery.

[0076] Please continue to refer to Figure 5 In another possible implementation, the battery further includes a third insulating member 530 and a fourth insulating member 540, and both the third insulating member 530 and the fourth insulating member 540 can be made of polyethylene terephthalate (PET) tape or polyimide (PI) tape. The second end of the first elastic metal heat conductive member 410 is abutted against the first pole lug 211 through the third insulating member 530, and the first end of the second elastic metal heat conductive member 420 is abutted against the second pole lug 212 through the fourth insulating member 540. In this embodiment, the safety of the battery can be improved by insulating the first elastic metal heat conductive member 410 from the first pole lug 211 and the second elastic metal heat conductive member 420 from the second pole lug 212, while also increasing the heat transfer path between the pole core 200 and the shell 100 and reducing the temperature difference in the battery.

[0077] During the assembly process of this embodiment, the first insulating member 510 and the second insulating member 520 may be firstly applied to the inner wall of the housing 100 , and the third insulating member 530 and the fourth insulating member 540 may be respectively applied to the first electrode tab 211 and the second electrode tab 212 as needed. When the pole core 200 is assembled into the shell 100, the first elastic metal heat conductive member 410 and the first pole ear 211, the second elastic metal heat conductive member 420 and the second pole ear 212 are clamped by automated equipment, and the lead-out sheet 300 is located between the first pole ear 211 and the second pole ear 212; during the assembly process, the shell 100 and the first pole ear 211 press the first elastic metal heat conductive member 410, and the shell 100 and the second pole ear 212 press the second elastic metal heat conductive member 420, so that the first elastic metal heat conductive member 410 and the second elastic metal heat conductive member 420 are elastically deformed, so that a heat transfer path is formed between the first pole ear 211 and the shell 100 by using the first elastic metal heat conductive member 410, and a heat transfer path is formed between the second pole ear 212 and the shell 100 by using the second elastic metal heat conductive member 420.

[0078] Please continue to refer to Figure 6 and Figure 7 In another possible embodiment, the battery may be a blade battery. The housing 100 includes a pole core 200 and two elastic metal heat conductive parts 400. The pole tab 210 may adopt a die-cut pole tab structure (referring to using a die-cutting device to cut the current collector of the battery to form a pole tab shape that meets the design requirements); the pole tab 210 may be a positive pole tab or a negative pole tab. The pole tab 210 is bent to form a first groove 2101 and a second groove 2102. The first groove 2101 is arranged close to the pole core 200. After bending, the contact area between the pole tab 210 and the elastic metal heat conductive part 400 can be increased, thereby improving the tensile strength of the pole tab 210. The elastic metal heat conductive part 400 may be made of foam metal or metal shrapnel. The figure takes the elastic metal heat conductive part 400 as foam nickel as an example for illustration. One of the two elastic metal heat conductive parts 400 is a first elastic metal heat conductive part 410, and the other is a second elastic metal heat conductive part 420. The housing 100 is further provided with a first insulating member 510 and a second insulating member 520, which are respectively located on two opposite inner walls of the housing 100. The first insulating member 510 and the second insulating member 520 can both be made of polyethylene terephthalate (PET) tape or polyimide (PI) tape. The thickness of the first insulating member 510 and the second insulating member 520 can be set as required, for example, 0.03-0.1 mm.

[0079] like Figure 7As shown, in a possible implementation, at least part of the first elastic metal heat conductive member 410 abuts in the first groove 2101, the end of the first elastic metal heat conductive member 410 away from the first groove 2101 abuts against the first insulating member 510, and the first elastic metal heat conductive member 410 also abuts against the pole core 200. Thus, the first elastic metal heat conductive member 410 is used to form a heat transfer path between the pole ear 210 and the shell 100, so as to evenly distribute the temperature of the battery during operation to the shell 100, improve the temperature distribution of the battery during operation, and increase the available power and cycle life of the battery. The first elastic metal heat conductive member 410 can also reduce the heat generation power of the battery during operation, thereby reducing the heat generated by the battery. Abutting the first elastic metal heat conductive member 410 against the pole core 200 can further increase the conductive heat transfer area, reduce the heat generation power of the battery during operation, and thereby reduce the heat generated by the battery.

[0080] At least part of the second elastic metal heat conductive member 420 abuts in the second groove 2102, and one end of the second elastic metal heat conductive member 420 that is away from the second groove 2102 abuts against the second insulating member 520. Thus, the second elastic metal heat conductive member 420 is used to form a heat transfer path between the pole ear 210 and the shell 100, so as to evenly distribute the temperature of the battery during operation to the shell 100, improve the temperature distribution of the battery during operation, and increase the available power and cycle life of the battery. The second elastic metal heat conductive member 420 can also reduce the heat generation power of the battery during operation, thereby reducing the heat generated by the battery.

[0081] In other possible implementations, when the heating power in the area of ​​the tab 210 and the lead-out sheet 300 is extremely high, the first elastic metal heat conductive member 410 may be welded to the first groove 2101; and / or the second elastic metal heat conductive member 420 may be welded to the second groove 2102. This further reduces the contact resistance between the first elastic metal heat conductive member 410 and the tab 210, greatly reduces the impedance and heating power, further improves the heat distribution state of the battery, and reduces the temperature difference in the battery.

[0082] In another possible implementation, the battery further includes a third insulating member 530 and a fourth insulating member 540 (not shown in the figure), and both the third insulating member 530 and the fourth insulating member 540 can be made of polyethylene terephthalate (PET) tape or polyimide (PI) tape. The third insulating member 530 is disposed in the first groove 2101, and the fourth insulating member 540 is disposed in the second groove 2102. At least part of the first elastic metal heat conductive member 410 abuts against the third insulating member 530, and at least part of the second elastic metal heat conductive member 420 abuts against the fourth insulating member 540. In this embodiment, the first elastic metal heat conductive member 410 and the second elastic metal heat conductive member 420 are insulated and connected to the pole lug 210, so as to improve the safety of the battery, and at the same time, it can also increase the heat transfer path between the pole core 200 and the shell 100, thereby reducing the temperature difference in the battery.

[0083] In the assembly process of this embodiment, the first insulating member 510 and the second insulating member 520 can be firstly applied to the inner wall of the shell 100. When the pole core 200 is assembled into the shell 100, the first elastic metal heat conductive member 410 and the second elastic metal heat conductive member 420 are clamped by an automated device, so that the first elastic metal heat conductive member 410 and the second elastic metal heat conductive member 420 are abutted against the pole tab 210; during the assembly process, the shell 100 and the pole tab 210 press the first elastic metal heat conductive member 410 and the second elastic metal heat conductive member 420, so that the first elastic metal heat conductive member 410 and the second elastic metal heat conductive member 420 produce elastic deformation, so that the first elastic metal heat conductive member 410 and the second elastic metal heat conductive member 420 are used to form a heat transfer path between the pole tab 210 and the shell 100.

[0084] This embodiment also provides an electrical device, including the above-mentioned battery.

[0085] The electric device may include a battery pack, a vehicle or an energy storage device. It is understandable that, due to the use of the above-mentioned battery, this embodiment can improve the temperature distribution of the electric device when it is used, ensure that the electric device has good working performance, and increase the power and life of the electric device.

[0086] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0087] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0088] It should be noted that in the description of this application, the terms "first" and "second" are only used to facilitate the description of different components, and cannot be understood as indicating or implying a sequential relationship, relative importance, or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0089] The various embodiments or implementation methods in the present application are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0090] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery, characterized in that: include: A shell (100), wherein a pole (110) is provided on the shell (100); at least one pole core (200), the pole core (200) being arranged in the housing (100), and a pole ear (210) being formed at an end of the pole core (200); A lead-out piece (300), wherein the pole tab (210) is electrically connected to the pole (110) via the lead-out piece (300); At least one elastic metal heat conductive member (400), one end of the elastic metal heat conductive member (400) is connected to the pole ear (210) and / or the lead-out plate (300), and the other end of the elastic metal heat conductive member (400) is insulated and connected to the housing (100).

2. The battery according to claim 1, characterized in that The elastic metal heat-conducting member (400) comprises foam metal or metal spring.

3. The battery according to claim 2, characterized in that The foam metal includes foam nickel, foam copper or foam titanium; the metal shrapnel includes aluminum shrapnel or copper shrapnel.

4. The battery according to claim 1, characterized in that The elastic deformation range of the elastic metal heat conducting member (400) is 0.1%-30%.

5. The battery according to claim 1, characterized in that The capacity of the battery is greater than or equal to 1Ah.

6. The battery according to any one of claims 1 to 5, characterized in that: One end of the elastic metal heat conductor (400) is in contact with the pole lug (210) and / or the lead-out plate (300); or one end of the elastic metal heat conductor (400) is welded to the pole lug (210) and / or the lead-out plate (300); or one end of the elastic metal heat conductor (400) is insulated and connected to the pole lug (210) and / or the lead-out plate (300).

7. The battery according to claim 6, characterized in that The shell (100) comprises a pole core (200) and two elastic metal heat-conducting parts (400), one of the two elastic metal heat-conducting parts (400) is a first elastic metal heat-conducting part (410), and the other is a second elastic metal heat-conducting part (420), and the shell (100) is also provided with a first insulating part (510) and a second insulating part (520), and the first insulating part (510) and the second insulating part (520) are respectively located on two opposite inner walls of the shell (100); The first end of the first elastic metal heat conductive member (410) abuts against the first insulating member (510), and the second end of the first elastic metal heat conductive member (410) abuts against the pole ear (210); the first end of the second elastic metal heat conductive member (420) abuts against the lead-out plate (300), and the second end of the second elastic metal heat conductive member (420) abuts against the second insulating member (520).

8. The battery according to claim 7, characterized in that The second end of the first elastic metal heat conductive member (410) is welded to the pole lug (210), and / or the first end of the second elastic metal heat conductive member (420) is welded to the lead-out plate (300).

9. The battery according to claim 7, characterized in that It also includes a third insulating member (530) and a fourth insulating member (540), wherein the second end of the first elastic metal heat conductive member (410) is abutted against the pole ear (210) via the third insulating member (530), and the first end of the second elastic metal heat conductive member (420) is abutted against the lead-out plate (300) via the fourth insulating member (540).

10. The battery according to claim 6, characterized in that The housing (100) comprises two pole cores (200) and two elastic metal heat conducting members (400); one of the two pole cores (200) is a first pole core (201) and the other is a second pole core (202); the first pole core (201) is provided with a first pole ear (211), the second pole core (202) is provided with a second pole ear (212), and the lead-out sheet (300) is located between the first pole ear (211) and the second pole ear (212). and is electrically connected to both the first pole lug (211) and the second pole lug (212); one of the two elastic metal heat-conducting parts (400) is a first elastic metal heat-conducting part (410), and the other is a second elastic metal heat-conducting part (420); a first insulating part (510) and a second insulating part (520) are also provided in the shell (100), and the first insulating part (510) and the second insulating part (520) are respectively located on two opposite inner walls in the shell (100); The first end of the first elastic metal heat conductive member (410) abuts against the first insulating member (510), and the second end of the first elastic metal heat conductive member (410) abuts against the first pole ear (211); the first end of the second elastic metal heat conductive member (420) abuts against the second pole ear (212), and the second end of the second elastic metal heat conductive member (420) abuts against the second insulating member (520).

11. The battery according to claim 10, characterized in that The second end of the first elastic metal heat conductive member (410) is welded to the first pole lug (211), and / or the first end of the second elastic metal heat conductive member (420) is welded to the second pole lug (212).

12. The battery according to claim 10, characterized in that It also includes a third insulating member (530) and a fourth insulating member (540), wherein the second end of the first elastic metal heat conductive member (410) is abutted against the first pole lug (211) via the third insulating member (530), and the first end of the second elastic metal heat conductive member (420) is abutted against the second pole lug (212) via the fourth insulating member (540).

13. The battery according to claim 6, characterized in that The shell (100) includes a pole core (200) and two elastic metal heat-conducting parts (400); the pole ear (210) is bent to form a first groove (2101) and a second groove (2102), and the first groove (2101) is arranged close to the pole core (200); one of the two elastic metal heat-conducting parts (400) is a first elastic metal heat-conducting part (410), and the other is a second elastic metal heat-conducting part (420); the shell (100) is also provided with a first insulating part (510) and a second insulating part (520), and the first insulating part (510) and the second insulating part (520) are respectively located on two opposite inner walls of the shell (100); At least a portion of the first elastic metal heat conductive member (410) abuts against the first groove (2101), and an end of the first elastic metal heat conductive member (410) facing away from the first groove (2101) abuts against the first insulating member (510), and the first elastic metal heat conductive member (410) also abuts against the pole core (200); at least a portion of the second elastic metal heat conductive member (420) abuts against the second groove (2102), and an end of the second elastic metal heat conductive member (420) facing away from the second groove (2102) abuts against the second insulating member (520).

14. The battery according to claim 13, characterized in that The first elastic metal heat conductive member (410) is welded to the first groove (2101), and / or the second elastic metal heat conductive member (420) is welded to the second groove (2102).

15. The battery according to claim 13, characterized in that The invention also includes a third insulating member (530) and a fourth insulating member (540), wherein the third insulating member (530) is arranged in the first groove (2101), and the fourth insulating member (540) is arranged in the second groove (2102), and at least a part of the first elastic metal heat conductive member (410) abuts against the third insulating member (530), and at least a part of the second elastic metal heat conductive member (420) abuts against the fourth insulating member (540).

16. An electrical equipment, characterized in that: Comprising a battery as claimed in any one of claims 1 to 15.

Images