Battery and electric device

Abstract

The embodiment of the utility model provides a battery and a power utilization device, the battery comprises a seat body, a heat exchange piece and a plurality of battery monomers, the seat body is provided with a bottom wall and a plurality of side walls connected with the bottom wall, and the bottom wall and the plurality of side walls define a containing space; the heat exchange piece is located in the containing space and provided with a plurality of containing cavities and a plurality of first openings communicating with the containing cavities one to one, the first openings face the bottom wall, and the portions, corresponding to the first openings, of the bottom wall are coated with glue; the plurality of single batteries are distributed in the plurality of accommodating cavities; the single batteries penetrate through the first opening and are adhered to the bottom wall; the reliability of the battery can be improved.

Description

Technical Field

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

[0002] Batteries are widely used in electronic devices, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric boats, electric toy cars, electric toy boats, electric toy airplanes and power tools, etc.

[0003] In the development of battery technology, how to improve battery reliability is a research direction in battery technology. Utility Model Content

[0004] The present application provides a battery and an electrical device, which can improve the reliability of the battery.

[0005] An embodiment of the present application provides a battery, including a seat body, a heat exchanger and a plurality of battery cells, the seat body having a bottom wall and a plurality of side walls connected to the bottom wall, the bottom wall and the plurality of side walls being arranged to form a storage space; the heat exchanger is located in the storage space, the heat exchanger having a plurality of storage cavities and a plurality of first openings connected to the storage cavities one by one, the first openings facing the bottom wall, and rubber is applied to the portions of the bottom wall corresponding to the first openings; the plurality of battery cells are distributed in the plurality of storage cavities, and the battery cells are bonded to the bottom wall through the first openings.

[0006] In the above technical scheme, the battery of the embodiment of the present application is provided with a plurality of accommodating cavities for accommodating battery cells on the heat exchange component, and the heat exchange component is placed in the base, so that after the bottom wall is coated with glue and the battery cells are bonded to the bottom wall, they can be pressed, and the actions of inverting the base and flipping the whole body are omitted, thereby saving the time from the coating of the glue to the pressing of the battery cells, thereby reducing the degree of curing of the glue in this process, thereby improving the firmness of the bonding between the battery cells and the base, and improving the reliability of the battery.

[0007] In some embodiments, at least one side wall and the heat exchange element have a concave-convex fit.

[0008] In the above technical solution, the heat exchange component is matched with the concavo-convex side wall, which can improve the accuracy of the position of the heat exchange component and the battery cell relative to the seat body, thereby facilitating the subsequent installation of other parts in the battery.

[0009] In some embodiments, the heat exchanger includes a base portion and a convex portion, the base portion is surrounded to form a plurality of accommodating cavities, the convex portion protrudes from at least one side of the base portion on opposite sides along a first direction, the side wall is provided with a concave portion, the convex portion is adapted to the concave portion, and the first direction intersects at a second direction of the bottom wall toward the first opening.

[0010] In the above technical solution, since the side wall is generally thicker, it is more convenient to manufacture by providing a convex portion on the heat exchanger and a concave portion on the side wall.

[0011] In some embodiments, the protrusions are disposed on opposite sides of the base portion along the first direction.

[0012] In the above technical solution, the protrusions are arranged on opposite sides of the base along the first direction, and the seat body can limit the heat exchange element in the first direction, reduce the displacement of the heat exchange element in the first direction, and improve the accuracy of the position of the heat exchange element in the first direction.

[0013] In some embodiments, the plurality of accommodating cavities are arranged along the third direction, and the first direction, the second direction and the third direction intersect with each other.

[0014] In the above technical solution, multiple accommodating cavities are arranged along the third direction. When the number of battery cells is large, the overall size of the multiple battery cells along the third direction is larger, that is, the size of the heat exchanger and the seat body along the third direction is larger, which facilitates the flexible arrangement of the convex parts and concave parts protruding along the first direction.

[0015] In some embodiments, the base portion includes a first side plate, a second side plate and multiple third side plates, the first side plate and the second side plate are arranged opposite to each other along the first direction, the multiple third side plates are arranged at intervals along the third direction and exchange heat for the battery cells, the heat exchange medium flow channel in the third side plate is connected to the heat exchange medium flow channel in the first side plate and the heat exchange medium flow channel in the second side plate at opposite ends along the first direction, the first side plate, the second side plate and two adjacent third side plates are surrounded to form a accommodating cavity, and the protrusion protrudes from the first side plate and / or the second side plate along the first direction.

[0016] In the above technical solution, the base portion is configured to include a first side plate, a second side plate and a third side plate. The first side plate and the second side plate are connected to multiple third side plates. Compared with connecting multiple third side plates through pipelines, space can be saved and the energy density of the battery can be improved.

[0017] In some embodiments, the protrusion is integrally formed with the first side panel and / or the second side panel.

[0018] In the above technical solution, the convex portion is configured to be integrally formed with the first side plate and / or the second side plate, which facilitates the manufacture of the heat exchange component.

[0019] In some embodiments, the heat exchange member further includes a guide portion, which is connected to a surface of the base portion facing the accommodating cavity and has a guide slope for guiding the battery cell into the accommodating cavity.

[0020] In the above technical solution, the guide part is provided, which can facilitate the battery cell to enter the accommodating cavity, improve the assembly efficiency, and can limit the battery cell to improve the accuracy of the battery cell position.

[0021] In some embodiments, there are multiple guide parts, including two first guide parts arranged opposite to each other along a third direction, the first guide parts having a first guide slope for guiding the battery cell into the accommodating cavity, and the first direction, the second direction and the third direction intersect each other.

[0022] In the above technical solution, in the third direction, the two first guide portions can guide the battery cell on both opposite sides in the third direction, thereby introducing the battery cell into the middle position of the accommodating cavity in the third direction, facilitating subsequent glue coating, and further facilitating the battery cell to enter the accommodating cavity, thereby improving assembly efficiency.

[0023] In some embodiments, the first guide portion further includes a first limiting plane connected to an end of the first guiding inclined surface close to the bottom wall.

[0024] In the above technical solution, a first limiting plane is provided to limit the battery cell, thereby improving the accuracy of the position of the battery cell relative to the heat exchanger, thereby facilitating the subsequent installation of other parts in the battery. In addition, the probability of the bottom surface of the battery cell abutting against the first guiding inclined surface can be reduced, thereby improving the assembly efficiency.

[0025] In some embodiments, the plurality of guide portions further include two second guide portions that are disposed opposite to each other along the first direction, and the second guide portions have a second guide slope for guiding the battery cell into the accommodating cavity.

[0026] In the above technical solution, in the first direction, the two second guide parts can form a guiding effect on the opposite sides of the battery cell in the first direction, so as to introduce the battery cell into the middle position of the accommodating cavity in the first direction, which is convenient for subsequent glue coating and further facilitates the battery cell to enter the accommodating cavity, thereby improving assembly efficiency.

[0027] In some embodiments, the second guide portion further includes a second limiting plane, and the second limiting plane is connected to an end of the second guide slope close to the bottom wall.

[0028] In the above technical solution, a second limiting plane is provided to limit the battery cell, thereby improving the accuracy of the position of the battery cell relative to the heat exchanger, thereby facilitating the subsequent installation of other parts in the battery. In addition, the probability of the bottom surface of the battery cell abutting against the second guiding inclined surface can be reduced, thereby improving the assembly efficiency.

[0029] In some embodiments, the first guide portion includes a first limiting plane, which is connected to one end of the first guide slope close to the bottom wall; the first limiting plane is connected to two second limiting planes at two opposite ends along the first direction, and the two first limiting planes and the two second limiting planes together form a limiting groove.

[0030] In the above technical solution, the two first limiting planes and the two second limiting planes are surrounded to form a limiting groove, so the position of the battery cell can be determined more accurately, thereby improving the accuracy of the battery cell position.

[0031] In some embodiments, the battery cell and the third side plate have a spacing H1 for filling with glue, and H1 satisfies: 1 mm≤H1≤5 mm.

[0032] In the above technical solution, limiting the distance H1 between the battery cell and the third side plate to greater than or equal to 1 mm can make the rubber have a certain thickness to meet the bonding strength requirement; limiting H1 to less than or equal to 5 mm can reduce the space occupied by the rubber and improve the energy density of the battery.

[0033] In some embodiments, H1 satisfies: 1 mm ≤ H1 ≤ 2 mm.

[0034] In the above technical solution, H1 is further limited to be less than or equal to 2 mm, which can further reduce the space occupied by the rubber material and improve the energy density of the battery.

[0035] In a second aspect, an embodiment of the present application further provides an electrical device, comprising the above-mentioned battery, and the battery is used to provide electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. 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 the drawings without paying creative work.

[0037] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0038] Figure 2 A schematic diagram of the exploded structure of a battery provided in some embodiments of the present application;

[0039] Figure 3 A schematic diagram of the structure of a heat exchange component of a battery provided in some embodiments of the present application;

[0040] Figure 4 for Figure 3 A top view of the heat exchange element shown;

[0041] Figure 5 A schematic diagram of the structure of a heat exchanger and a seat in a battery provided in some embodiments of the present application;

[0042] Figure 6 for Figure 3 A magnified view at point A;

[0043] Figure 7 for Figure 4 Cross-sectional view at BB;

[0044] Figure 8 for Figure 7 Enlarged view at C;

[0045] Fig. 9 A schematic diagram of the partial structure of a heat exchanger and a battery cell in a battery provided in some embodiments of the present application.

[0046] The reference numerals of the specific embodiments are as follows:

[0047] 1. Vehicle; 2. Battery; 3. Controller; 4. Motor;

[0048] 5. seat body; 51. bottom wall; 52. side wall; 521. recess; 53. accommodation space;

[0049] 6. heat exchange member; 61. accommodating chamber; 62. first opening; 63. base portion; 631. first side plate; 632. second side plate; 633. third side plate; 64. convex portion; 65. guide portion; 651. first guide portion; 652. first guide slope; 653. first limiting plane; 654. second guide portion; 655. second guide slope; 656. second limiting plane;

[0050] 7. Battery cells;

[0051] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0053] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0054] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0055] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of 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.

[0056] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0057] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0058] The term "plurality" used in the present application refers to two or more (including two).

[0059] In the present application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., and the embodiments of the present application do not limit this. The battery cell may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this.

[0060] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0061] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator. A battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. 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 positive current collector includes a positive coating area and a positive electrode ear connected to the positive coating area. The positive coating area is coated with a positive active material layer, and the positive electrode ear is not coated with a positive active material layer. Taking a lithium-ion battery cell as an example, the material of the positive current collector can be aluminum, and the positive active material layer includes a positive active material. The positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, and the negative electrode active material layer is coated on the surface of the negative electrode current collector; the negative electrode current collector includes a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area, and the negative electrode coating area is coated with a negative electrode active material layer, and the negative electrode tab is not coated with a negative electrode active material layer. The material of the negative electrode current collector can be copper, and the negative electrode active material layer includes a negative electrode active material, and the negative electrode active material can be carbon or silicon, etc. The material of the separator can be PP (polypropylene, polypropylene) or PE (polyethylene, polyethylene), etc.

[0062] During the battery manufacturing process, the heat exchange component and the battery cell are first formed into a whole and then inverted, then glue is applied to the bottom surface of the lower box, and then the lower box is turned upside down on the heat exchange component and the battery cell to bond the lower box to the battery cell, and then the lower box, battery cell and heat exchange component are turned back to the original state as a whole, and then the battery cell is pressed to firmly bond the battery cell to the lower box.

[0063] During this process, after applying glue to the bottom surface of the lower box, the lower box needs to be turned upside down on the battery cell, and then the lower box and the battery cell need to be straightened. These actions take a long time, and the glue may solidify first during this process, so that the battery cell and the lower box fail to reach the bonding strength in the final pressing step, so that the bonding between the battery cell and the lower box is prone to failure during use, affecting the reliability of the battery.

[0064] In view of this, the present application provides a battery, which provides a plurality of accommodating cavities for accommodating battery cells on the heat exchange component, and places the heat exchange component in the base, so that after the bottom wall is coated with glue and the battery cells are bonded to the bottom wall, they can be pressed, and the action of buckling the lower box body and flipping the whole body is omitted, thereby saving the time between the coating of the glue and the pressing of the battery cells, thereby reducing the degree of curing of the glue in this process, thereby improving the firmness of the bonding between the battery cells and the base, and improving the reliability of the battery.

[0065] The battery described in the embodiments of the present application is suitable for use in electrical devices using the battery.

[0066] The electrical device may be a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, and the like. The vehicle may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, and the like; the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, and the like; the electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, and the like; the electric tool may include a metal cutting electric tool, a grinding electric tool, an assembly electric tool, and an electric tool for railways, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator, and an electric planer, and the like. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0067] For the convenience of description, the following embodiments are described by taking the electric device as a vehicle as an example.

[0068] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0069] like Figure 1 As shown, a battery 2 is disposed inside the vehicle 1, and the battery 2 may be disposed at the bottom, head, or tail of the vehicle 1. The battery 2 may be used to power the vehicle 1, for example, the battery 2 may be used as an operating power source for the vehicle 1.

[0070] The vehicle 1 may further include a controller 3 and a motor 4 , wherein the controller 3 is used to control the battery 2 to supply power to the motor 4 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1 .

[0071] In some embodiments of the present application, the battery 2 can not only serve as an operating power source for the vehicle 1, but also serve as a driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0072] Figure 2 A schematic diagram of the exploded structure of a battery provided in some embodiments of the present application; Figure 3 A schematic diagram of the structure of a heat exchange component of a battery provided in some embodiments of the present application; Figure 4 for Figure 3 A top view of the heat exchange element is shown.

[0073] like Figure 2-Figure 4 As shown, the battery 2 includes a base 5, a heat exchanger 6 and a plurality of battery cells 7. The base 5 has a bottom wall 51 and a plurality of side walls 52 connected to the bottom wall 51. The bottom wall 51 and the plurality of side walls 52 are arranged to form a receiving space 53. The heat exchanger 6 is located in the receiving space 53. The heat exchanger 6 has a plurality of receiving cavities 61 and a plurality of first openings 62 connected to the receiving cavities 61 one by one. The first openings 62 face the bottom wall 51, and the rubber is applied to the corresponding parts of the bottom wall 51 and the first openings 62. The plurality of battery cells 7 are distributed in the plurality of receiving cavities 61, and the battery cells 7 are bonded to the bottom wall 51 through the first openings 62. The plurality of battery cells 7 in the embodiment of the present application can be connected in series, in parallel or in mixed connection. Mixed connection means that the plurality of battery cells 7 are both connected in series and in parallel.

[0074] The side wall 52 and the bottom wall 51 of the embodiment of the present application can be connected by welding, integral molding or riveting.

[0075] The number of the side walls 52 in the embodiment of the present application may be four, and the four side walls 52 are arranged to form a rectangular frame structure. Of course, the number of the side walls 52 may also be three, five, six, etc.

[0076] The heat exchanger 6 of the embodiment of the present application is used to exchange heat with the battery cell 7, and can cool the battery cell 7 or heat the battery cell 7. The first opening 62 of the heat exchanger 6 faces the bottom wall 51, that is, the first opening 62 faces the bottom wall 51, and the first opening 62 is formed on the side of the heat exchanger 6 close to the bottom wall 51.

[0077] Exemplarily, in addition to the first opening 62 , the heat exchange element 6 also has a second opening opposite to the first opening 62 , and the second opening is used for the battery cell 7 to enter the accommodating cavity 61 .

[0078] The multiple battery cells 7 in the embodiment of the present application are distributed in multiple accommodating cavities 61 . Each accommodating cavity 61 may accommodate an equal number of battery cells 7 , or each accommodating cavity 61 may accommodate an unequal number of battery cells 7 .

[0079] In a specific assembly condition, the heat exchanger 6 is placed in the accommodation space 53, and the adhesive is applied to the portion of the bottom wall 51 corresponding to the first opening 62, and then the battery cell 7 is placed in the accommodation cavity 61 and bonded and pressed to the bottom wall 51. Then, the adhesive is applied to the portion of the next bottom wall 51 corresponding to the first opening 62, and then the battery cell 7 is placed in the accommodation cavity 61 and bonded and pressed to the bottom wall 51, until all the battery cells 7 are bonded.

[0080] The battery 2 of the embodiment of the present application is provided with a plurality of accommodating cavities 61 for accommodating battery cells 7 on the heat exchange component 6, and the heat exchange component 6 is placed in the base 5, so that after the bottom wall 51 is coated with glue and the battery cells 7 are bonded to the bottom wall 51, they can be pressed, and the actions of turning the base 5 upside down and flipping the whole body are omitted, thereby saving the time from the coating of the glue to the pressing of the battery cells 7, thereby reducing the degree of curing of the glue in this process, thereby improving the firmness of the bonding between the battery cells 7 and the base 5, and improving the reliability of the battery 2.

[0081] In some embodiments, at least one side wall 52 and the heat exchange element 6 are matched in a concave-convex manner.

[0082] The side wall 52 and the heat exchanger 6 of the embodiment of the present application are matched in a concave-convex manner. The side wall 52 may be provided with a protrusion and the heat exchanger 6 may be provided with a depression, and the two are matched in a concave-convex manner; or the side wall 52 may be provided with both a protrusion and a depression, and correspondingly, the heat exchanger 6 may be provided with a depression and a protrusion corresponding to the side wall 52, thereby achieving a concave-convex match.

[0083] The concave-convex matching of the heat exchanger 6 and the side wall 52 can improve the accuracy of the position of the heat exchanger 6 and the battery cell 7 relative to the seat 5, thereby facilitating the subsequent installation of other parts in the battery 2, such as welding of the confluence component.

[0084] Figure 5 A schematic diagram of the structure of a heat exchanger and a seat in a battery provided in some embodiments of the present application.

[0085] See also Figures 3 to 5 In some embodiments, the heat exchanger 6 includes a base portion 63 and a convex portion 64, the base portion 63 is surrounded to form a plurality of accommodating cavities 61, the convex portion 64 protrudes from at least one side of the base portion 63 on opposite sides along the first direction X, the side wall 52 is provided with a concave portion 521, the convex portion 64 is adapted to the concave portion 521, and the first direction X intersects at the second direction Y of the bottom wall 51 toward the first opening 62.

[0086] The shape of the protrusion 64 in the embodiment of the present application can be a strip, a block or other shapes.

[0087] The recess 521 in the embodiment of the present application refers to a recessed space.

[0088] On the side where the protrusion 64 protrudes from the base portion 63 , the number of the protrusion 64 may be one or more.

[0089] Optionally, the first direction X is perpendicular to the second direction Y.

[0090] The multiple accommodation cavities 61 in the embodiment of the present application may be arranged along the first direction X, or along other directions.

[0091] Since the side wall 52 is generally thicker, it is more convenient to manufacture by providing the convex portion 64 on the heat exchange element 6 and the concave portion 521 on the side wall 52 .

[0092] In some embodiments, the protrusions 64 are disposed on opposite sides of the base portion 63 along the first direction X.

[0093] The convex portion 64 of the embodiment of the present application protrudes from opposite sides of the base portion 63 along the first direction X, and the side walls 52 are provided with concave portions 521 at corresponding positions, that is, at least two side walls 52 opposite to each other along the first direction X are provided with concave portions 521 .

[0094] Optionally, on any side where the protrusion 64 protrudes from the base portion 63 , there are multiple protrusions 64 .

[0095] The protrusions 64 are arranged on opposite sides of the base portion 63 along the first direction X, and the seat body 5 can limit the heat exchange element 6 in the first direction X, reduce the displacement of the heat exchange element 6 in the first direction X, and improve the accuracy of the position of the heat exchange element 6 in the first direction X.

[0096] In some embodiments, the plurality of accommodating cavities 61 are arranged along the third direction Z, and the first direction X, the second direction Y and the third direction Z intersect each other.

[0097] Optionally, the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0098] The multiple accommodating cavities 61 are arranged along the third direction Z. When the number of battery cells 7 is large, the overall size of the multiple battery cells 7 along the third direction Z is larger, that is, the size of the heat exchange component 6 and the seat body 5 along the third direction Z is larger, which facilitates the flexible arrangement of the protrusion 64 and the recess 521 protruding along the first direction X.

[0099] Please continue reading Figure 3In some embodiments, the base portion 63 includes a first side plate 631, a second side plate 632 and a plurality of third side plates 633. The first side plate 631 and the second side plate 632 are arranged opposite to each other along the first direction X. The plurality of third side plates 633 are arranged at intervals along the third direction Z and perform heat exchange for the battery cells 7. The heat exchange flow channel in the third side plate 633 is connected to the heat exchange medium flow channel in the first side plate 631 and the heat exchange medium flow channel in the second side plate 632 at opposite ends along the first direction X. The first side plate 631, the second side plate 632 and two adjacent third side plates 633 are arranged to form a accommodating cavity 61. The protrusion 64 protrudes from the first side plate 631 and / or the second side plate 632 along the first direction X.

[0100] The heat exchange medium flow channel in the third side plate 633 of the embodiment of the present application is connected to the heat exchange medium flow channel in the first side plate 631 and the heat exchange medium flow channel in the second side plate 632 at two opposite ends along the first direction X, that is, one end of the heat exchange medium flow channel in the third side plate 633 is connected to the heat exchange medium flow channel in the first side plate 631, and the other end is connected to the heat exchange medium flow channel in the second side plate 632.

[0101] The first side plate 631 and the second side plate 632 of the embodiment of the present application are connected to the heat exchange medium flow channels in the plurality of third side plates 633 at the same time to realize the circulation of the heat exchange liquid. The first side plate 631 and the second side plate 632 can be used to exchange heat with the battery cell 7, or they can only play the role of connecting the heat exchange medium flow channels in the plurality of third side plates 633, and are spaced apart from the battery cell 7, but not in close contact with the battery cell 7 for heat exchange.

[0102] Exemplarily, the base portion 63 further includes a liquid inlet and a liquid outlet, the liquid inlet is arranged on the first side plate 631 or the second side plate 632, and the liquid outlet is correspondingly arranged on the second side plate 632 or the first side plate 631. Of course, the liquid inlet and the liquid outlet can also be arranged at other positions. For example, the liquid inlet and the liquid outlet are both arranged on the first side plate 631, or both are arranged on the second side plate 632, or both are arranged on the third side plate 633.

[0103] Optionally, the protrusion 64 protrudes from the first side plate 631 and the second side plate 632 .

[0104] Optionally, the battery cell 7 is bonded to the third side plate 633 . Further optionally, both the first side plate 631 and the second side plate 632 are bonded to the battery cell 7 .

[0105] The base portion 63 is configured to include a first side plate 631, a second side plate 632, and a third side plate 633. The first side plate 631 and the second side plate 632 are connected to a plurality of third side plates 633. Compared with connecting a plurality of third side plates 633 through a pipeline, space can be saved and the energy density of the battery 2 can be improved. Moreover, the first side plate 631 and the second side plate 632 can further protect the battery cell 7.

[0106] In some embodiments, the protrusion 64 is integrally formed with the first side plate 631 and / or the second side plate 632 .

[0107] The protrusion 64 is configured to be integrally formed with the first side plate 631 and / or the second side plate 632 , so as to facilitate the manufacture of the heat exchange element 6 .

[0108] Figure 6 for Figure 3 A magnified view at point A; Figure 7 for Figure 4 Cross-sectional view at BB; Figure 8 for Figure 7 Enlarged view at C.

[0109] See also Figure 6-Figure 8 In some embodiments, the heat exchange member 6 further includes a guide portion 65 , which is connected to a surface of the base portion 63 facing the accommodating cavity 61 and has a guide slope for guiding the battery cell 7 into the accommodating cavity 61 .

[0110] The guide portion 65 of the embodiment of the present application may be disposed on one of the surfaces of the base portion 63 facing the accommodating cavity 61 , or may be disposed on multiple surfaces of the base portion 63 facing the accommodating cavity 61 .

[0111] The guide portion 65 of the embodiment of the present application can be connected to the base portion 63 by integral molding, bonding, welding, or the like.

[0112] The guiding inclined surface in the embodiment of the present application may be a plane, a curved surface, or an irregularly shaped surface that is a combination of a plane and a curved surface.

[0113] The guide portion 65 is provided to facilitate the battery cell 7 to enter the accommodating cavity 61 , thereby improving assembly efficiency, and can limit the battery cell 7 , thereby improving the accuracy of the position of the battery cell 7 .

[0114] In some embodiments, there are multiple guide portions 65, and the multiple guide portions 65 include two first guide portions 651 arranged opposite to each other along the third direction Z. The first guide portion 651 has a first guide slope 652 for guiding the battery cell 7 into the accommodating cavity 61. The first direction X, the second direction Y and the third direction Z intersect each other.

[0115] The two first guiding inclined surfaces 652 of the two first guiding portions 651 of the embodiment of the present application are inclined in opposite directions, and the two first guiding inclined surfaces 652 guide the battery cells 7 to enter therebetween.

[0116] The inclination degrees of the two first guiding inclined surfaces 652 in the embodiment of the present application may be the same or different.

[0117] Optionally, the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0118] The guide portion 65 is configured to include two first guide portions 651 that are opposite to each other along the third direction Z. In this way, in the third direction Z, the two first guide portions 651 can form a guiding effect on the opposite sides of the battery cell 7 in the third direction Z, thereby introducing the battery cell 7 into the middle position of the accommodating cavity 61 in the third direction Z, which is convenient for subsequent glue coating and further facilitates the battery cell 7 to enter the accommodating cavity 61, thereby improving assembly efficiency.

[0119] In some embodiments, the first guide portion 651 further includes a first limiting plane 653 , and the first limiting plane 653 is connected to an end of the first guiding inclined surface 652 close to the bottom wall 51 .

[0120] The first limiting plane 653 of the embodiment of the present application may be in contact with the battery cell 7 , or may have a gap with the battery cell 7 .

[0121] The first limiting plane 653 of the embodiment of the present application faces the battery cell 7 .

[0122] The first limiting plane 653 is provided to limit the battery cell 7, thereby improving the accuracy of the position of the battery cell 7 relative to the heat exchanger 6, thereby further facilitating the subsequent installation of other parts in the battery 2. In addition, the probability of the bottom surface of the battery cell 7 abutting against the first guiding inclined surface 652 can also be reduced, thereby improving the assembly efficiency.

[0123] In some embodiments, the plurality of guide portions 65 further include two second guide portions 654 disposed opposite to each other along the first direction X. The second guide portions 654 have second guide slopes 655 for guiding the battery cells 7 into the accommodating cavity 61 .

[0124] The two second guiding inclined surfaces 655 of the two second guiding portions 654 of the embodiment of the present application are inclined in opposite directions, and the two second guiding inclined surfaces 655 guide the battery cells 7 to enter therebetween.

[0125] The inclination degrees of the two second guiding inclined surfaces 655 in the embodiment of the present application may be the same or different.

[0126] The guide portion 65 is configured to include two second guide portions 654 that are opposite to each other along the first direction X. In this way, in the first direction X, the two second guide portions 654 can form a guiding effect on the opposite sides of the battery cell 7 in the first direction X, thereby introducing the battery cell 7 into the middle position of the accommodating cavity 61 in the first direction X, which is convenient for subsequent glue coating and further facilitates the battery cell 7 to enter the accommodating cavity 61, thereby improving assembly efficiency.

[0127] In some embodiments, the second guide portion 654 further includes a second limiting plane 656 , and the second limiting plane 656 is connected to an end of the second guiding inclined surface 655 close to the bottom wall 51 .

[0128] The second limiting plane 656 of the embodiment of the present application may be in contact with the battery cell 7 , or may have a gap with the battery cell 7 .

[0129] The second limiting plane 656 of the embodiment of the present application faces the battery cell 7 .

[0130] The second limiting plane 656 is provided to limit the battery cell 7, thereby improving the accuracy of the position of the battery cell 7 relative to the heat exchanger 6, thereby further facilitating the subsequent installation of other parts in the battery 2. In addition, the probability of the bottom surface of the battery cell 7 abutting against the second guiding inclined surface 655 can be reduced, thereby improving the assembly efficiency.

[0131] In some embodiments, the first guide portion 651 includes a first limiting plane 653, which is connected to one end of the first guide slope 652 close to the bottom wall 51; the first limiting plane 653 is connected to two second limiting planes 656 at opposite ends along the first direction X, and the two first limiting planes 653 and the two second limiting planes 656 are enclosed to form a limiting groove.

[0132] The two first limiting planes 653 and the two second limiting planes 656 of the embodiment of the present application enclose a rectangular groove structure.

[0133] The two first limiting planes 653 and the two second limiting planes 656 are arranged to form a limiting groove, so that the position of the battery cell 7 can be determined more accurately, thereby improving the accuracy of the position of the battery cell 7.

[0134] Fig. 9 A schematic diagram of the partial structure of a heat exchanger and a battery cell in a battery provided in some embodiments of the present application.

[0135] See also Fig. 9 In some embodiments, the battery cell 7 and the third side plate 633 have a spacing H1 for filling the rubber material, and H1 satisfies: 1mm≤H1≤5mm.

[0136] Optionally, H1 is 1 mm, 2 mm, 3 mm, 4 mm or 5 mm.

[0137] Limiting the distance H1 between the battery cell 7 and the third side plate 633 to be greater than or equal to 1 mm can make the adhesive have a certain thickness to meet the bonding strength requirement; limiting H1 to be less than or equal to 5 mm can reduce the space occupied by the adhesive and improve the energy density of the battery 2.

[0138] In some embodiments, H1 satisfies: 1 mm ≤ H1 ≤ 2 mm.

[0139] Optionally, H1 is 1.2 mm, 1.5 mm, 1.7 mm or 1.8 mm.

[0140] Further limiting H1 to less than or equal to 2 mm can further reduce the space occupied by the rubber material and improve the energy density of the battery 2.

[0141] In some embodiments, the battery cell 7 and the first side plate 631 have a spacing H2 for filling with glue, and H2 satisfies: 1 mm≤H2≤5 mm.

[0142] Optionally, H2 is 1 mm, 2 mm, 3 mm, 4 mm or 5 mm.

[0143] Limiting the distance H2 between the battery cell 7 and the first side plate 631 to be greater than or equal to 1 mm can make the adhesive have a certain thickness to meet the bonding strength requirement; limiting H2 to be less than or equal to 5 mm can reduce the space occupied by the adhesive and improve the energy density of the battery 2.

[0144] In some embodiments, H2 satisfies: 1 mm ≤ H2 ≤ 2 mm.

[0145] Optionally, H2 is 1.2 mm, 1.5 mm, 1.7 mm or 1.8 mm.

[0146] Further limiting H2 to less than or equal to 2 mm can further reduce the space occupied by the rubber material and improve the energy density of battery 2.

[0147] The embodiment of the present application also provides an electrical device, comprising the above-mentioned battery 2.

[0148] See also Figure 2-Figure 8The embodiment of the present application provides a battery 2, which includes a base 5, a heat exchanger 6 and a plurality of battery cells 7. The base 5 has a bottom wall 51 and a plurality of side walls 52 connected to the bottom wall 51, and the bottom wall 51 and the plurality of side walls 52 are arranged to form a receiving space 53. The heat exchanger 6 is located in the receiving space 53, and the heat exchanger 6 has a plurality of receiving cavities 61 and a plurality of first openings 62 connected to the receiving cavities 61 one by one. The first openings 62 face the bottom wall 51, and the rubber is applied to the corresponding parts of the bottom wall 51 and the first openings 62. The plurality of battery cells 7 are distributed in the plurality of receiving cavities 61, and the battery cells 7 are bonded to the bottom wall 51 through the first openings 62. At least one side wall 52 and the heat exchanger 6 are matched in a concave-convex manner. The heat exchanger 6 includes a base portion 63 and a convex portion 64, the base portion 63 is surrounded to form a plurality of accommodating cavities 61, the convex portion 64 protrudes from opposite sides of the base portion 63 along the first direction X, the side wall 52 is provided with a concave portion 521, the convex portion 64 is adapted to the concave portion 521, the first direction X intersects with the second direction Y of the bottom wall 51 toward the first opening 62. The plurality of accommodating cavities 61 are arranged along the third direction Z, and the first direction X, the second direction Y and the third direction Z intersect each other. The base part 63 includes a first side plate 631, a second side plate 632 and a plurality of third side plates 633. The first side plate 631 and the second side plate 632 are arranged opposite to each other along the first direction X. The plurality of third side plates 633 are arranged at intervals along the third direction Z and perform heat exchange for the battery cell 7. The heat exchange medium flow channel in the third side plate 633 is connected to the heat exchange medium flow channel in the first side plate 631 and the heat exchange medium flow channel in the second side plate 632 at opposite ends along the first direction X. The first side plate 631, the second side plate 632 and two adjacent third side plates 633 are arranged to form a receiving cavity 61. The protrusion 64 protrudes from the first side plate 631 and the second side plate 632 along the first direction X. The protrusion 64 is integrally formed with the first side plate 631 and the second side plate 632. The heat exchange member 6 also includes a guide portion 65, which is connected to the surface of the base part 63 facing the receiving cavity 61 and has a guide slope for guiding the battery cell 7 into the receiving cavity 61. There are multiple guide parts 65, and the multiple guide parts 65 include two first guide parts 651 arranged opposite to each other along the third direction Z. The first guide part 651 has a first guide slope 652 for guiding the battery cell 7 into the accommodating cavity 61. The first direction X, the second direction Y and the third direction Z intersect each other. The first guide part 651 also includes a first limiting plane 653, and the first limiting plane 653 is connected to one end of the first guiding slope 652 close to the bottom wall 51. The multiple guide parts 65 also include two second guide parts 654 arranged opposite to each other along the first direction X. The second guide part 654 has a second guiding slope 655 for guiding the battery cell 7 into the accommodating cavity 61. The second guide part 654 also includes a second limiting plane 656, and the second limiting plane 656 is connected to one end of the second guiding slope 655 close to the bottom wall 51.

[0149] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0150] 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 make equivalent replacements for some of the technical features therein, but these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery, characterized in that: include: A seat body, comprising a bottom wall and a plurality of side walls connected to the bottom wall, wherein the bottom wall and the plurality of side walls are arranged to form a receiving space; A heat exchanger is located in the accommodation space, the heat exchanger has a plurality of accommodation cavities and a plurality of first openings connected to the accommodation cavities one by one, the first openings face the bottom wall, and the rubber material is applied to the portion of the bottom wall corresponding to the first openings; A plurality of battery cells are distributed in the plurality of accommodating cavities, and the battery cells pass through the first openings and are bonded to the bottom wall.

2. The battery according to claim 1, characterized in that At least one of the side walls and the heat exchange element are matched in a concave-convex manner.

3. The battery according to claim 2, characterized in that The heat exchanger includes a base portion and a convex portion, the base portion is surrounded to form a plurality of the accommodating cavities, the convex portion protrudes from at least one side of the base portion on opposite sides along a first direction, the side wall is provided with a concave portion, the convex portion is adapted to the concave portion, and the first direction intersects with the second direction of the bottom wall toward the first opening.

4. The battery according to claim 3, characterized in that The convex parts are arranged on two opposite sides of the base part along the first direction.

5. The battery according to claim 3, characterized in that The plurality of accommodating cavities are arranged along a third direction, and the first direction, the second direction and the third direction intersect each other.

6. The battery according to claim 5, characterized in that The base portion includes a first side plate, a second side plate and a plurality of third side plates, the first side plate and the second side plate are arranged opposite to each other along a first direction, the plurality of third side plates are arranged at intervals along the third direction and exchange heat for the battery cells, the heat exchange medium flow channel in the third side plate is connected to the heat exchange medium flow channel in the first side plate and the heat exchange medium flow channel in the second side plate at opposite ends along the first direction, the first side plate, the second side plate and two adjacent third side plates are arranged to form the accommodating cavity, and the protrusion protrudes from the first side plate and / or the second side plate along the first direction.

7. The battery according to claim 6, characterized in that The convex portion is integrally formed with the first side plate and / or the second side plate.

8. The battery according to any one of claims 3 to 7, characterized in that: The heat exchange member further includes a guide portion, which is connected to a surface of the base portion facing the accommodating cavity and has a guide slope for guiding the battery cell into the accommodating cavity.

9. The battery according to claim 8, characterized in that There are multiple guide parts, including two first guide parts arranged opposite to each other along a third direction, the first guide parts having a first guide slope for guiding the battery cell into the accommodating cavity, and the first direction, the second direction and the third direction intersect each other.

10. The battery according to claim 9, characterized in that The first guide portion further includes a first limiting plane, and the first limiting plane is connected to an end of the first guiding inclined surface close to the bottom wall.

11. The battery according to claim 9, characterized in that The plurality of guide portions further include two second guide portions that are arranged opposite to each other along the first direction, and the second guide portions have a second guide slope for guiding the battery cell into the accommodating cavity.

12. The battery according to claim 11, characterized in that The second guide portion further includes a second limiting plane, and the second limiting plane is connected to an end of the second guide inclined surface close to the bottom wall.

13. The battery according to claim 12, characterized in that The first guide portion includes a first limiting plane, and the first limiting plane is connected to an end of the first guiding inclined surface close to the bottom wall; Two opposite ends of the first limiting plane along the first direction are connected to two second limiting planes one by one, and the two first limiting planes and the two second limiting planes enclose a limiting groove.

14. The battery according to claim 6, characterized in that The battery cell and the third side plate have a spacing H1 for filling with glue, and H1 satisfies: 1mm≤H1≤5mm.

15. The battery according to claim 14, characterized in that The H1 satisfies: 1mm≤H1≤2mm.

16. An electrical device, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 15, wherein the battery is used to provide electrical energy.

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