Battery and electric device

Abstract

The present application relates to the technical field of batteries, and provides a battery and an electric device. The battery comprises a plurality of battery cells and liquid cooling structures; the battery cells are arranged at intervals; each liquid cooling structure comprises a liquid cooling main body part and a gel blocking strip connected to the liquid cooling main body part; the liquid cooling main body part is located between two adjacent battery cells; and the liquid cooling main body part, the two adjacent battery cells and the gel blocking strip define a gap for gel filling. According to the battery provided in the present application, the gel blocking strip is arranged on the liquid cooling main body part of each liquid cooling structure, so that the gel blocking strip can be connected to the liquid cooling main body part in advance; in this way, during the assembly of the liquid cooling structure and the battery cells, the working procedure of additionally mounting the gel blocking strip can be omitted, thereby improving the battery production and manufacturing efficiency to a certain extent.

Description

Batteries and electrical equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on March 5, 2024, with application number 202420422802.0 and invention name “Batteries and Electrical Equipment”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular provides a battery and an electrical device. Background Art

[0003] Batteries typically include multiple battery cells and a liquid cooling mechanism positioned between adjacent battery cells. Typically, the liquid cooling mechanism is made of metal with high thermal conductivity. To address the issue of rapid heat dissipation from the liquid cooling mechanism due to direct contact between the edges of the liquid cooling mechanism and the battery case when cooling a large area of ​​each battery cell, a further process is required: adding a rubber barrier strip between adjacent battery cells and filling the space enclosed by the edges of the liquid cooling mechanism, the inner walls of the adjacent battery cells, and the rubber barrier strip with glue to prevent excessive heat dissipation from the liquid cooling mechanism.

[0004] However, the increase in the above-mentioned processes also affects the battery production efficiency. Technical issues

[0005] The purpose of this application is to provide a battery and electrical equipment to improve the efficiency problem in the battery production process. Technical Solutions

[0006] To achieve the above objectives, the technical solution adopted in this application is:

[0007] In a first aspect, an embodiment of the present application provides a battery, comprising:

[0008] A plurality of battery cells, each of the battery cells being arranged at intervals;

[0009] The liquid cooling structure includes a liquid cooling main body and a rubber barrier strip connected to the liquid cooling main body. The liquid cooling main body is located between two adjacent battery cells. The liquid cooling main body, the two adjacent battery cells and the rubber barrier strip form a gap for colloid filling.

[0010] Beneficial effects of the embodiments of the present application: The battery provided in the present application is provided with a rubber strip on the liquid-cooling main body of the liquid-cooling structure, so that the rubber strip can be connected to the liquid-cooling main body in advance. In this way, when the liquid-cooling structure and the battery cell are assembled and spliced, the additional installation process of the rubber strip can be omitted, thereby improving the efficiency of battery production and manufacturing to a certain extent.

[0011] In some embodiments, the barrier strip includes a support portion connected to the liquid-cooled main body at one end and a partition portion connected to an end of the support portion away from the liquid-cooled main body. The liquid-cooled main body, two adjacent battery cells and the partition portion enclose the gap to be filled with colloid.

[0012] By adopting the above technical solution, the rubber barrier strip is divided into a supporting part connected to the liquid-cooling main body and a partition part used to achieve rubber blocking. The connection between the two can be integrated and detachable. In this way, the liquid-cooling main body, the two adjacent battery cells and the partition part enclose a gap to form a gap for the colloid to fill.

[0013] In some embodiments, one end of the support portion away from the blocking portion is integrally formed with the liquid-cooling main body.

[0014] By adopting the above technical solution, the support part is integrally formed on the liquid cooling main body, further eliminating the installation process of the rubber strip. During the battery assembly process, the liquid cooling structure and the battery cell can be directly assembled, and the corresponding gaps can be filled with glue.

[0015] In some embodiments, the support portion is elastic, the battery cell has a bottom wall, and a surface of the blocking portion facing away from the support portion can be flush with the bottom wall.

[0016] By adopting the above technical solution, the supporting part can be pulled by increasing the filling amount of the colloid, so that the surface of the partition part facing away from the supporting part abuts against the inner wall of the battery box, that is, the surface of the partition part facing away from the supporting part can be flush with the bottom wall. In this way, the partition part has the abutment effect of a physical structure, which can reduce glue overflow.

[0017] In some embodiments, the battery cell has a bottom wall, and the barrier portion abuts against the bottom wall.

[0018] By adopting the above technical solution, the weight of the battery cell itself can be used to apply pressure to the barrier portion to improve the airtightness of the gap, thereby further reducing the probability of glue overflow.

[0019] In some embodiments, two adjacent battery cells have two side walls facing each other, and opposite ends of the barrier portion respectively abut against the corresponding side walls.

[0020] By adopting the above technical solution, the barrier portion and the side walls of two adjacent battery cells are in an interference fit positional relationship. Similarly, the colloid can be filled in the gap to reduce the risk of glue overflow.

[0021] In some embodiments, the rubber barrier strip further includes a fin portion, and at least one end of the barrier portion is provided with the fin portion, and the fin portion is used to increase the contact area between the barrier portion and the side wall.

[0022] By adopting the above technical solution, a fin portion is provided on the end of the barrier portion to increase the contact area between the barrier portion and the side wall of the battery cell, thereby further reducing the risk of glue overflow.

[0023] In some embodiments, the barrier portion is elastic.

[0024] By adopting the above technical solution, the matching accuracy of the distance between the barrier portion and the side walls of two adjacent battery cells can be reduced, thereby satisfying that the opposite ends of the barrier portion abut against the side walls.

[0025] In some embodiments, the blocking portion and the supporting portion are provided separately, and the blocking portion is detachably connected to an end of the supporting portion away from the liquid-cooling main body.

[0026] By adopting the above technical solution, the barrier portion and the support portion are detachably connected, and the size of the corresponding barrier portion can be adjusted according to the actual size specifications of the battery cell to meet the corresponding barrier colloid requirements.

[0027] In a second aspect, an embodiment of the present application further provides an electrical device comprising the battery described above.

[0028] It can be understood that the beneficial effects of the second aspect mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] FIG1 is a schematic diagram of the structure of an electrical device provided in an embodiment of the present application;

[0031] FIG2 is a schematic structural diagram of a battery provided in an embodiment of the present application;

[0032] FIG3 is a schematic diagram of a partial structure of a battery provided in an embodiment of the present application;

[0033] FIG4 is a schematic structural diagram of a liquid cooling structure provided in an embodiment of the present application;

[0034] FIG5 is a cross-sectional view of a liquid cooling structure provided in an embodiment of the present application;

[0035] Figure 6 is an enlarged view of point A in Figure 5;

[0036] FIG7 is a left side view of the battery provided in Example 1 of the present application;

[0037] FIG8 is an enlarged view of point B in FIG7 ;

[0038] FIG9 is a left side view of the battery provided in Example 2 of the present application;

[0039] FIG10 is an enlarged view of point C in FIG9 .

[0040] Among them, the reference numerals in the figures are:

[0041] 10000, electrical equipment; 1000, controller; 2000, motor;

[0042] 3000, battery; 3001, battery box; 30011, first part; 30012, second part;

[0043] 100, battery cell; 200, liquid cooling structure; 100a, gap; 100b, bottom wall; 100c, side wall;

[0044] 201, liquid cooling main body;

[0045] 202, rubber strip; 2021, supporting portion; 2022, partition portion; 2023, fin portion. Modes for Carrying Out the Invention

[0046] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0047] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0049] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0050] Batteries are usually composed of multiple battery cells arranged in combination. In order to improve the performance of each battery cell during use, a liquid cooling plate is usually set between two adjacent battery cells to lower the battery cells, especially the battery cell located in the middle position.

[0051] Here, the liquid cooling plate is mostly made of metal. In order to reduce the problem of excessive heat dissipation caused by the liquid cooling plate contacting the battery box, it is necessary to fill glue between the outer edge of the liquid cooling plate and the inner wall of the battery box. In addition, in order to fix the glue, an additional step is required in the battery assembly process, that is, a glue blocking structure is set between two adjacent battery cells to reduce the probability of glue overflow.

[0052] However, the increase in the above-mentioned steps also reduces the efficiency of battery assembly, and the battery production efficiency is also lower.

[0053] In view of this, the present application provides a battery, in which a rubber strip is arranged on the liquid-cooling main body of the liquid-cooling structure. Then, when the liquid-cooling structure is installed between two adjacent battery cells, the rubber strip is also simultaneously located between the two battery cells. Therefore, a process of setting the rubber strip between two adjacent battery cells can be reduced, which simplifies the battery assembly process to a certain extent, reduces the number of processes, and improves the battery production efficiency.

[0054] The embodiment of the present application provides a device 10000 that uses the battery 3000 as a power source and can be applied to electrical equipment such as vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, and power tools. The vehicle can be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle; the spacecraft includes airplanes, rockets, space shuttles, and spacecraft; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys; and the power tools include metal cutting power tools, grinding power tools, assembly power tools, and ironwork power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers.

[0055] The battery 3000 described in the embodiments of the present application is not limited to being applicable to the electrical equipment 10000 described above, but can also be applicable to all devices that use the battery 3000. However, for the sake of simplicity, the following embodiments are all described using electric vehicles as an example.

[0056] For example, please refer to Figure 1, which is a structural diagram of a vehicle in an embodiment of the present application. The vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 3000, a controller 1000 and a motor 2000 can be set inside the vehicle, and the controller 1000 is used to control the battery 3000 to power the motor 2000. For example, a battery 3000 can be set at the bottom or the front or the rear of the vehicle. The battery 3000 can be used to power the vehicle. For example, the battery 3000 can be used as the operating power supply of the vehicle and used for the circuit system of the vehicle, for example, for the working power requirements during the start-up, navigation and operation of the vehicle. In another embodiment of the present application, the battery 3000 can not only be used as the operating power supply of the vehicle, but also as the driving power supply of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0057] The battery 3000 mentioned in the embodiments of the present application refers to a single physical module that includes one or more battery cells 100 to provide higher voltage and capacity. Referring to Figure 2, the battery 3000 may include multiple battery cells 100. The number of battery cells 100 and the connection between the battery cells 100 can be set as needed to meet different power requirements. Specifically, multiple battery cells 100 can be connected in series, in parallel, or in a mixed connection. Mixed connection refers to a mixture of series and parallel connections so that the battery 3000 has a larger capacity or power. Optionally, multiple battery cells 100 can first be connected in series, in parallel, or in a mixed connection to form a battery module, and multiple battery modules can then be connected in series, in parallel, or in a mixed connection to form a battery 3000. In other words, multiple battery cells can directly form a battery 3000, or they can first form a battery module, and the battery modules can then form a battery 3000.

[0058] A battery cell 100 includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet, and a separator. Battery cell 100 primarily operates by the movement of metal ions between the positive and negative electrode sheets. The positive electrode sheet includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The current collector uncoated with the positive active material layer protrudes from the current collector coated with the positive active material layer. The current collectors uncoated with the positive active material layer, when stacked, serve as positive electrode tabs. For ease of description, the term "tab" will be used to refer to the positive and / or negative electrode tabs.

[0059] In this application, battery cells 100 include, but are not limited to, lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells, or magnesium-ion battery cells. Battery cells may be cylindrical, flat, rectangular, or in other shapes. Battery cells 100 are generally categorized into three types based on packaging: cylindrical, prismatic, and soft-pack battery cells.

[0060] The battery 3000 also includes a battery case 3001, which has a storage space inside, and multiple battery cells are stored in the storage space. As shown in Figure 2, the battery case 3001 can include two parts, which are respectively referred to as the first part 30011 and the second part 30012. The first part 30011 and the second part 30012 can be connected by snapping, bonding, etc. to form a storage space. Multiple battery cells are connected in parallel, series, or mixed and placed in the case formed by connecting the first part 30011 and the second part 30012. The shapes of the first part 30011 and the second part 30012 can be determined according to the shape of the combination of multiple battery cells.

[0061] The battery case 3001 is used to protect at least one battery cell 100 , thereby reducing the impact of liquid or other foreign matter outside the battery 3000 on the charging or discharging of the at least one battery cell 100 .

[0062] Please refer to Figures 3 to 6 and 8. Figure 3 is a schematic diagram of the local structure of the battery provided in an embodiment of the present application; Figure 4 is a schematic diagram of the structure of the liquid cooling structure provided in an embodiment of the present application. The embodiment of the present application provides a battery 3000, including multiple battery cells 100 and a liquid cooling structure 200.

[0063] The battery cells 100 are arranged at intervals;

[0064] The liquid cooling structure 200 includes a liquid cooling main body 201 and a rubber strip 202 connected to the liquid cooling main body 201. The liquid cooling main body 201 is located between two adjacent battery cells 100. The liquid cooling main body 201, the two adjacent battery cells 100 and the rubber strip 202 enclose a gap for colloid filling.

[0065] It is understandable that each battery cell 100 needs to generate heat during operation. Arranging the battery cells 100 at intervals is beneficial to the arrangement of the liquid cooling structure 200 and can also increase the heat exchange area of ​​the battery cells 100.

[0066] For example, for a plurality of elongated battery cells 100, each elongated battery cell 100 is arranged at intervals along its own width direction. In this way, when heat exchange is performed with the liquid cooling structure 200, the maximum outer surface of the elongated battery cell 100 can contact the liquid cooling structure 200, thereby greatly improving the heat exchange efficiency.

[0067] The liquid cooling body 201 of the liquid cooling structure 200 can be a water cooling plate or a liquid-solid hybrid cooling plate. The specific structure of the liquid cooling body 201 can refer to the structure of a harmonica pipe.

[0068] The adhesive strip 202 is disposed between two adjacent battery cells 100 to block the adhesive filling in the gap 100 a to reduce the risk of adhesive overflow.

[0069] Here, the rubber strip 202 is connected to the liquid cooling body 201, that is, the two are already connected when the battery is assembled. The connection between the rubber strip 202 and the liquid cooling body 201 can be an integral connection or a detachable connection.

[0070] The material of the retaining strip 202 can be colloid, and the material of the liquid cooling main body 201 can be metal. The two can be connected in one piece by in-mold injection molding. In this way, when the battery is assembled, the liquid cooling main body 201 is arranged at the same time as the retaining strip 202 is arranged, thereby eliminating the process of arranging the retaining strip 202 again. After the gap 100a is formed, the glue can be filled directly, which shortens the battery assembly time and improves the battery production efficiency.

[0071] Alternatively, the retaining strip 202 can also be connected to the liquid cooling main body 201 by plugging, snapping or bonding, which can also meet the requirement of reducing the number of steps brought about by the advance setting of the retaining strip 202. That is, the assembled incoming liquid cooling structure 200 also has a retaining strip 202, and the glue can be directly filled after the gap 100a is formed, which shortens the battery assembly time and improves the battery production efficiency.

[0072] For example, as shown in Figure 8, the liquid-cooling main body 201 has a side surface in contact with the battery cell 100 and an end surface connecting two adjacent side surfaces. The rubber strip 202 is arranged on the end surface of the liquid-cooling main body 201. When the side surface of the liquid-cooling main body 201 contacts two adjacent battery cells 100, the end surface of the liquid-cooling main body 201 faces the battery case. In this way, the end surface of the liquid-cooling main body 201, the outer wall of the two adjacent battery cells 100 and the rubber strip 202 enclose a gap 100a for colloid filling.

[0073] The battery provided in the present application is provided with a rubber strip 202 on the liquid-cooling main body 201 of the liquid-cooling structure 200, so that the rubber strip 202 can be connected to the liquid-cooling main body 201 in advance. In this way, when the liquid-cooling structure 200 and the battery cell 100 are assembled and spliced, the additional installation process of the rubber strip 202 can be omitted, thereby improving the efficiency of battery production to a certain extent.

[0074] Please refer to Figures 5, 6 and 8. In some embodiments, the rubber strip 202 includes a support portion 2021 connected to the liquid-cooled main body 201 at one end and a partition portion 2022 connected to the end of the support portion 2021 away from the liquid-cooled main body 201. The liquid-cooled main body 201, two adjacent battery cells 100 and the partition portion 2022 enclose a gap 100a for colloid filling.

[0075] It can be understood that the support portion 2021 plays a corresponding connecting role, used to connect the liquid-cooling main body 201 and the barrier portion 2022. Here, the material of the support portion 2021 can be the same as that of the liquid-cooling main body 201, so as to meet the requirement of being integrally molded with the liquid-cooling main body 201. Alternatively, the material of the support portion 2021 can also be rubber or resin, etc., which can also meet the requirement of being integrally molded with the liquid-cooling main body 201, or can also meet the requirement of being detachably connected to the liquid-cooling main body 201. Specifically, the support portion 2021 can be a plate-like structure, a sheet-like structure, or a strip-like structure, and the plane where the support portion 2021 is located is parallel or approximately parallel to the outer surface of the battery cell 100.

[0076] The barrier portion 2022 is used to block the colloid, and is enclosed with the liquid-cooling main body 201 and the two adjacent battery cells 100 to form a gap 100a. Since the barrier portion 2022 is in direct contact with the battery cell 100, in order to reduce damage to the battery cell 100, the barrier portion 2022 is usually made of an elastic material. For example, the material of the barrier portion 2022 can be rubber, resin, and plastic, etc., so as to meet the requirements of flexible connection with the battery cell 100. Therefore, the material of the support portion 2021 can be the same as that of the barrier portion 2022, or it can be different from the material of the barrier portion 2022. Specifically, the barrier portion 2022 can be a plate-like structure, a block-like structure, or a sheet-like structure, and the plane where the barrier portion 2022 is located is perpendicular or approximately perpendicular to the outer surface of the battery cell 100. In this way, the cross-sectional shape of the barrier strip 202 is similar to a "T" shape.

[0077] For example, the material of the support portion 2021 is the same as that of the barrier portion 2022 and both are made of rubber, which can be integrally formed by injection molding. Therefore, both the support portion 2021 and the barrier portion 2022 have a certain elasticity to meet the abutment requirement of the barrier portion 2022 on two adjacent battery cells 100.

[0078] In summary, the rubber barrier strip 202 is divided into a support portion 2021 connected to the liquid-cooled main body 201 and a partition portion 2022 for achieving rubber blocking. The connection between the two can be integrated and detachable. In this way, the liquid-cooled main body 201, the two adjacent battery cells 100 and the partition portion 2022 enclose a gap 100a for the colloid to be filled.

[0079] In some embodiments, one end of the support portion 2021 away from the blocking portion 2022 is integrally formed with the liquid-cooling main body 201 .

[0080] It can be understood that the material of the support part 2021 can be the same as the material of the liquid-cooled main body 201. For example, the materials of both are aluminum alloy, magnesium alloy or aluminum-magnesium alloy, etc. Therefore, the support part 2021 can be integrally formed with the liquid-cooled main body 201 through an integral casting or stamping process.

[0081] Alternatively, the material of the support part 2021 may be different from that of the liquid-cooled main body 201. For example, the material of the support part 2021 is rubber, resin, plastic, etc., and the material of the liquid-cooled main body 201 is a metal alloy. Then, the two can be integrally formed through an in-mold injection molding process.

[0082] The material of the blocking portion 2022 may be the same as that of the supporting portion 2021 , or the two materials may be different, and the material may be selected according to a specific usage scenario.

[0083] In summary, the support part 2021 is integrally formed on the liquid cooling main body 201, further eliminating the installation process of the rubber strip 202. During the battery assembly process, the incoming liquid cooling structure 200 includes the rubber strip 202, and the liquid cooling structure 200 can be directly assembled with the battery cell 100. The gap 100a formed by the assembly can be used for filling with glue.

[0084] 7 and 8 , in some embodiments, the support portion 2021 is elastic, the battery cell 100 has a bottom wall 100 b , and the surface of the barrier portion 2022 facing away from the support portion 2021 can be flush with the bottom wall 100 b .

[0085] It can be understood that the support part 2021 is elastic. Then, the material of the support part 2021 is a flexible material such as rubber, resin or plastic. When the amount of colloid filling in the gap 100a is large, it can support the partition part 2022 to gradually move away from the liquid cooling main body 201 until it abuts against the inner wall of the battery box.

[0086] The barrier portion 2022 is located within the space enclosed by two adjacent battery cells 100 and does not extend beyond the bottom wall 100b of the battery cell 100. Therefore, when the amount of gel filled in the gap 100a is high, the surface of the barrier portion 2022 facing away from the support portion 2021 contacts the inner wall of the battery case and is flush with the bottom wall 100b of the battery cell 100.

[0087] Here, the bottom wall 100 b of the battery cell 100 refers to a wall portion that contacts the inner wall of the box when the battery cell 100 is placed in the box.

[0088] In summary, when the filling amount of the colloid increases and the support part 2021 is pulled, the surface of the partition part 2022 away from the support part 2021 after bearing the heavy pressure abuts against the inner wall of the battery box, that is, the surface of the partition part 2022 away from the support part 2021 can be flush with the bottom wall 100b. In this way, the partition part 2022 has the abutment effect of a physical structure, which can reduce glue overflow.

[0089] 9 and 10 , in some embodiments, the battery cell 100 has a bottom wall 100 b , and the barrier portion 2022 abuts against the bottom wall 100 b .

[0090] It can be understood that the barrier portion 2022 is located outside the space enclosed by two adjacent battery cells 100. During battery assembly, the bottom wall 100b of the battery cell 100 abuts against the barrier portion 2022. It can be understood that at least a portion of the barrier portion 2022 is located between the bottom wall 100b of the battery cell 100 and the inner wall of the box. In other words, the weight of the battery cell 100 provides sealing pressure at the connection between the barrier portion 2022 and the bottom wall 100b.

[0091] Here, the bottom wall 100 b of the battery cell 100 refers to a wall portion that contacts the inner wall of the box when the battery cell 100 is placed in the box.

[0092] In summary, the weight of the battery cell 100 is used to apply pressure to the barrier portion 2022 to improve the sealing performance of the gap 100 a , thereby further reducing the probability of glue overflow.

[0093] Referring to FIG. 8 , in some embodiments, two adjacent battery cells 100 have two side walls 100 c disposed opposite to each other, and opposite ends of the barrier portion 2022 respectively abut against the corresponding side walls 100 c.

[0094] It can be understood that the side wall 100 c of the battery cell 100 refers to the wall portion corresponding to the adjacent battery cell 100 after the battery cell 100 is placed, and the wall portion of the battery cell 100 is also the wall portion in contact with the liquid-cooling main body 201 .

[0095] The barrier portion 2022 may be a plate-like structure, a block-like structure or a sheet-like structure. Thus, the barrier portion 2022 has two oppositely disposed ends, and an interference fit is adopted between the two oppositely disposed ends of the barrier portion 2022 and the corresponding side walls 100 c.

[0096] In summary, the barrier portion 2022 and the side walls 100 c of two adjacent battery cells 100 are in an interference fit relationship, so that the glue can be filled in the gap 100 a to reduce the risk of glue overflow.

[0097] Referring to FIG. 8 , in some embodiments, the rubber strip 202 further includes a fin portion 2023 . At least one end of the barrier portion 2022 is provided with the fin portion 2023 . The fin portion 2023 is used to increase the contact area between the barrier portion 2022 and the side wall 100 c .

[0098] It can be understood that the fin portion 2023 can be a sheet-like structure with a large surface area, and the fin portion 2023 can be connected to the side wall 100c by attaching or pasting. Therefore, the fin portion 2023 can increase the contact area between the partition portion 2022 and the side wall 100c.

[0099] Optionally, in order to improve the sealing and leak-proof performance at the gap 100a, fin portions 2023 are provided on both ends of the barrier portion 2022. Therefore, the risk of glue overflow is reduced by taking advantage of the larger contact area between the fin portion 2023 and the side wall 100c.

[0100] Here, the material of the fin portion 2023 can be the same as that of the barrier portion 2022 . For example, both can be made of rubber, resin, and plastic.

[0101] In summary, the fin portion 2023 is provided on the end of the barrier portion 2022 to increase the contact area between the barrier portion 2022 and the side wall 100 c of the battery cell 100 , thereby further reducing the risk of glue overflow.

[0102] In some embodiments, the barrier portion 2022 is elastic.

[0103] It is understood that the barrier portion 2022 can be made of a flexible material to make it elastic. For example, the barrier portion 2022 can be made of rubber, resin, plastic, etc. Alternatively, the barrier portion 2022 can be made of a lightweight metal material, such as aluminum sheet, aluminum-magnesium sheet, etc.

[0104] In this way, when the partition portion 2022 is interference fit with the side walls 100c of two adjacent battery cells 100, the elastic partition portion 2022 can reduce the fitting accuracy of the spacing between the partition portion 2022 and the side walls 100c of two adjacent battery cells 100, especially the problem of unequal spacing between the side walls 100c of two adjacent battery cells 100 caused by the thickness difference of the liquid-cooling main body 201, so that the opposite ends of the partition portion 2022 are abutted against the side wall 100c.

[0105] In some embodiments, the blocking portion 2022 and the supporting portion 2021 are provided separately, and the blocking portion 2022 is detachably connected to an end of the supporting portion 2021 away from the liquid-cooling main body 201 .

[0106] It can be understood that the blocking portion 2022 and the supporting portion 2021 are two independently provided components, which can be connected by corresponding connection methods when necessary.

[0107] For example, a snap-fitting protrusion is formed on the end of the support portion 2021 away from the liquid-cooling main body 201 , and a snap-fitting recess matched with the snap-fitting protrusion is formed on the blocking portion 2022 , that is, the two are detachably connected by snap-fitting connection.

[0108] For example, a plug-in portion is formed on the end of the support portion 2021 away from the liquid-cooling main body 201, and a plug-in hole adapted to the plug-in portion is formed on the blocking portion 2022, that is, the two are detachably connected by plug-in connection.

[0109] In this way, the size of the barrier portion 2022 on the support portion 2021 is adjusted according to the actual size specifications of the battery cell 100 to meet the corresponding barrier colloid requirements.

[0110] Please refer to Figures 3 to 8. In a specific embodiment, the present application provides a battery 3000 including a plurality of battery cells 100 and a liquid cooling structure 200.

[0111] The battery cells 100 are arranged at intervals; the liquid cooling structure 200 includes a liquid cooling main body 201 and a blocking rubber strip 202 connected to the liquid cooling main body 201, the liquid cooling main body 201 is located between two adjacent battery cells 100, the blocking rubber strip 202 includes a supporting portion 2021 connected to the liquid cooling main body 201 at one end and a blocking portion 2022 connected to the end of the supporting portion 2021 away from the liquid cooling main body 201, the liquid cooling main body 201, the two adjacent battery cells 100 and the blocking portion 2022 enclose a gap 100a for colloid filling.

[0112] The support portion 2021 is elastic, the battery cell 100 has a bottom wall 100 b , and the surface of the blocking portion 2022 facing away from the support portion 2021 can be flush with the bottom wall 100 b .

[0113] Two adjacent battery cells 100 have two side walls 100 c disposed opposite to each other, and opposite ends of the barrier portion 2022 respectively abut against the corresponding side walls 100 c.

[0114] The rubber strip 202 further includes a fin portion 2023 . The fin portion 2023 is provided on at least one end of the barrier portion 2022 . The fin portion 2023 is used to increase the contact area between the barrier portion 2022 and the side wall 100 c .

[0115] One end of the support portion 2021 away from the blocking portion 2022 is integrally formed with the liquid cooling main body 201 . Meanwhile, the support portion 2021 and the blocking portion 2022 are also integrally formed.

[0116] In a second aspect, an embodiment of the present application further provides an electric device 10000 , comprising the above-mentioned battery 3000 .

[0117] Taking an electric car as an example of an electrical device, a battery 3000, a controller 1000 and a motor 2000 are provided inside the vehicle. The controller 1000 is used to control the battery 3000 to supply power to the motor 2000. For example, the battery 3000 can be provided at the bottom, front or rear of the vehicle. The battery 3000 can be used to power the vehicle. For example, the battery 3000 can be used as an operating power source for the vehicle and for the circuit system of the vehicle, for example, for starting, navigating and meeting the working power requirements of the vehicle during operation. In another embodiment of the present application, the battery 3000 can not only be used as an operating power source for the vehicle, but also as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0118] It can be understood that the beneficial effects of the second aspect mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here.

[0119] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A battery, characterized in that: include: A plurality of battery cells, each of the battery cells being arranged at intervals; The liquid cooling structure includes a liquid cooling main body and a rubber barrier strip connected to the liquid cooling main body. The liquid cooling main body is located between two adjacent battery cells. The liquid cooling main body, the two adjacent battery cells and the rubber barrier strip form a gap for colloid filling.

2. The battery according to claim 1, wherein: The blocking strip includes a support portion connected to the liquid cooling main body at one end and a blocking portion connected to an end of the support portion away from the liquid cooling main body. The liquid cooling main body, two adjacent battery cells and the blocking portion enclose the gap for the colloid to be filled.

3. The battery according to claim 2, wherein: One end of the support portion away from the blocking portion is integrally formed with the liquid-cooling main body.

4. The battery according to claim 3, wherein: The supporting portion is elastic, the battery cell has a bottom wall, and a surface of the blocking portion facing away from the supporting portion can be flush with the bottom wall.

5. The battery according to claim 3, wherein: The battery cell has a bottom wall, and the barrier portion abuts against the bottom wall.

6. The battery according to claim 2, wherein: Two adjacent battery cells have two side walls arranged facing each other, and opposite ends of the barrier portion are respectively in contact with the corresponding side walls.

7. The battery according to claim 6, characterized in that: The rubber blocking strip further includes a fin portion, and at least one end of the blocking portion is provided with the fin portion, and the fin portion is used to increase the contact area between the blocking portion and the side wall.

8. The battery according to claim 7, characterized in that: The blocking portion is elastic.

9. The battery according to claim 2, characterized in that: The blocking portion and the supporting portion are provided separately, and the blocking portion is detachably connected to an end of the supporting portion away from the liquid-cooling main body.

10. An electrical device, characterized in that: Comprising the battery according to any one of claims 1 to 9.

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