WO2025179978A1 - Battery and electric device - Google Patents

Abstract

The present application discloses a battery and an electric device. The battery comprises battery packs and compression assemblies. A plurality of rows of battery packs are sequentially arranged in a first direction; and each row of battery packs comprises a plurality of battery cells which are sequentially arranged and are electrically connected to each other in a second direction, wherein the first direction and the second direction intersect with each other. The compression assemblies are arranged on end covers of the battery cells of the battery packs; each compression assembly covers two adjacent rows of battery packs, and a heat exchange medium is provided in the compression assembly. The compression assemblies can enhance the mechanical strength of the battery, thereby improving the stability of the battery. In addition, heat exchange can be performed on the battery cells by means of the heat exchange medium, so that the battery cells can operate at an appropriate temperature, thereby improving the cycle performance of the battery, simplifying the structure, saving the space, and improving the energy density of the battery.

Description

Batteries and electrical devices

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese patent application No. 202420400786.5, filed on March 1, 2024, entitled “Battery and Electrical Device,” the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the technical field of batteries, and more particularly, to a battery and an electrical device.

Background Art

Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

In the development of battery technology, how to improve the energy density of batteries is an important research direction in battery technology.

Summary of the Invention

The present application provides a battery and an electrical device, which can improve the energy density of the battery.

In a first aspect, an embodiment of the present application provides a battery, comprising a battery pack and a compression assembly, wherein multiple rows of battery packs are arranged in sequence along a first direction, and each row of battery packs comprises multiple battery cells arranged in sequence and electrically connected to each other along a second direction; wherein the first direction and the second direction are arranged to intersect; the compression assembly is arranged on the end cover of the battery cell of the battery pack, and the compression assembly respectively covers two adjacent rows of battery packs, and a heat exchange medium is arranged inside the compression assembly.

In the above solution, the compression assembly connects the battery packs and presses on the adjacent battery packs to enhance the mechanical strength of the battery and improve the stability of the battery. At the same time, a heat exchange medium is provided inside the compression assembly, through which the heat of the battery cells can be exchanged, so that the battery cells can operate at a suitable temperature, thereby improving the cycle performance of the battery. The compression assembly of the embodiment of the present application integrates the two functions of connecting and fixing adjacent battery packs and exchanging heat for the battery cells. There is no need to set up a separate thermal management component on the same side surface of the battery as the pressure strip structure, which simplifies the structure and saves space, thereby improving the energy density of the battery.

In some embodiments, the pressing assembly includes a pressing tube and a sealing member. The pressing tube extends along the second direction, and the heat exchange medium is arranged in the pressing tube. The two sealing members are respectively arranged at opposite ends of the pressing tube along the second direction.

In the above solution, the sealing member seals the compression tube, improving the sealing performance of the compression assembly. In addition, the individual compression assemblies in the embodiment of the present application do not need to be connected and are independently provided, eliminating the need for connecting tubes and reducing the production cost of the battery.

In some embodiments, a reinforcing rib is provided on a side of the pressure tube facing away from the battery pack, and the reinforcing rib can enhance the structural strength of the pressure tube.

In some embodiments, the reinforcing ribs extend along the second direction, increasing the length of the reinforcing ribs and further improving the structural strength of the compression tube.

In some embodiments, the reinforcing rib includes a first sub-rib and two second sub-ribs, the two second sub-ribs are respectively arranged on opposite sides of the press tube along the first direction, and the first sub-rib is arranged between the two second sub-ribs.

In the above solution, the cooperation between the first sub-rib and the two second sub-ribs further improves the rigidity of the compression tube and the strength against deformation.

In some embodiments, the blocking member is detachably provided at the end of the pressure tube, so as to facilitate maintenance and replacement of damaged parts and reduce costs.

In some embodiments, the compression assembly is bonded to the battery pack via a connecting adhesive layer, which is simple and easy to install and can improve battery production efficiency.

In some embodiments, the connecting adhesive layer is a thermally conductive adhesive layer, which can transfer the heat of the battery cell to the pressing assembly more quickly, thereby improving the heat exchange efficiency of the battery.

In some embodiments, the outer surface of the press-fit assembly is wrapped with an insulating layer. If the press-fit assembly is made of metal material, wrapping the outer surface of the press-fit assembly with an insulating layer can prevent battery leakage to a certain extent and improve battery reliability.

In some embodiments, the first direction is a length direction of the battery cell, and the second direction is a width direction of the battery cell.

In the above solution, the multiple battery cells of each row of the battery pack are arranged in sequence along the width direction of the battery cells, which facilitates the connection between the battery cells and the operation of the battery pack.

In a second aspect, an embodiment of the present application further provides an electrical device, comprising a battery according to any of the above embodiments, wherein the battery is used to provide electrical energy.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. 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 creative work.

FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

FIG2 is a schematic diagram of an explosion of a battery provided in some embodiments of the present application;

FIG3 is a schematic diagram of a partial structure of a battery provided in some embodiments of the present application;

FIG4 is a cross-sectional view of a battery provided in some embodiments of the present application;

FIG5 is a partial schematic diagram of a battery provided in some embodiments of the present application;

FIG6 is a schematic structural diagram of a pressing assembly provided in some embodiments of the present application;

FIG7 is a schematic cross-sectional view of a press tube provided in some embodiments of the present application.

In the drawings, the drawings are not drawn to scale.

Description of reference numerals:
1000, vehicle; 100, battery; 200, controller; 300, motor; 10, upper cover; 20,
Battery cell; 400, battery pack; 500, pressing assembly; 51, pressing tube; 52, sealing member; 53, reinforcing rib; 531, first sub-rib; 532, second sub-rib; 54, connecting adhesive layer; 55, insulating layer; 61, bottom plate; 62, side plate; X, first direction; Y, second direction.

DETAILED DESCRIPTION

To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" 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-secondary relationship.

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

In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

The term "and/or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and/or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the related objects are in an "or" relationship.

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

The term "plurality" used in this application refers to two or more (including two).

In this application, battery cells may include 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, and the embodiments of this application are not limited thereto. Battery cells may be cylindrical, flat, rectangular, or in other shapes, and the embodiments of this application are not limited thereto.

In this application, battery cells may include 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, etc., and the embodiments of this application do not limit this. Battery cells may be cylindrical, flat, rectangular, or other shapes, etc., and the embodiments of this application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and soft-pack battery cells, and the embodiments of this application do not limit this.

The battery referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in this application may include a battery module or a battery pack. A battery generally includes a casing that encloses one or more battery cells. The casing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

A battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode sheet, a negative electrode sheet, and a separator. A battery cell primarily operates by the movement of metal ions between the positive and negative electrode sheets. The positive electrode sheet comprises 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 the positive electrode tabs. For lithium-ion batteries, for example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide. The negative electrode sheet comprises a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. The current collector uncoated with the negative active material layer protrudes from the current collector coated with the negative active material layer. The current collectors uncoated with the negative active material layer, when stacked, serve as the negative electrode tabs. The negative current collector can be made of copper, and the negative active material can be carbon, silicon, or other materials. The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a wound structure or a laminated structure, but the embodiments of the present application are not limited thereto.

The battery cells disclosed in the embodiments of this application can be used, but are not limited to, in electrical devices such as vehicles, ships, or aircraft. A power supply system comprising the battery cells and batteries disclosed in this application can be used to improve the stability of battery performance and battery life.

Batteries will exhibit different electrical cycle performance at different ambient temperatures. When the ambient temperature is too high or too low, the battery's cycle performance will decline, and even its service life will be shortened. In order to ensure the safety, stable performance, and excellent operation of new energy vehicles, effective thermal management of the battery must be carried out. Thermal management components must be set to control the battery to always operate within the appropriate temperature range to improve the battery's cycle performance. In addition, battery packs are generally connected into large modules through a layering structure to improve the mechanical strength of the battery. The above structure increases the complexity of the battery, occupies the internal space of the battery, and reduces the energy density of the battery.

In order to solve the above-mentioned technical problems, an embodiment of the present application provides a battery, which includes a battery pack and a compression assembly, wherein multiple rows of battery packs are arranged in sequence along a first direction, and each row of battery packs includes multiple battery cells arranged in sequence and electrically connected to each other along a second direction; the compression assembly is arranged on the end cover of the battery cell of the battery pack, and the compression assembly respectively covers two adjacent rows of battery packs, and a heat exchange medium is arranged inside the compression assembly.

In the above solution, the compression assembly connects the battery packs and presses on the adjacent battery packs to enhance the mechanical strength of the battery and improve the stability of the battery. At the same time, a heat exchange medium is provided inside the compression assembly, through which the heat of the battery cells can be exchanged, so that the battery cells can operate at a suitable temperature, thereby improving the cycle performance of the battery. The compression assembly of the embodiment of the present application integrates the two functions of connecting and fixing adjacent battery packs and exchanging heat for the battery cells. There is no need to set up a separate thermal management component on the same side surface of the battery as the pressure strip structure, which simplifies the structure and saves space, thereby improving the energy density of the battery.

The present invention provides an electric device that uses a battery as a power source. The electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. 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, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

Please refer to Figure 1, which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 can be provided at the bottom, head or tail of the vehicle 1000. The battery 100 can be used to power the vehicle 1000. For example, the battery 100 can serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

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

Please refer to Figure 2, which is an exploded schematic diagram of the battery provided in some embodiments of the present application. The battery 100 includes a battery box and a battery cell 20. In some embodiments, the battery box may include an upper cover 10 and a box body 30, the upper cover 10 and the box body 30 covering each other, and the upper cover 10 and the box body 30 jointly define a receiving cavity for accommodating the battery cell 20. The box body 30 may be a hollow structure with one end open, and the upper cover 10 may be a plate-like structure, the upper cover 10 covering the open side of the box body 30, so that the upper cover 10 and the box body 30 jointly define a receiving cavity; the upper cover 10 and the box body 30 may also be hollow structures with one side open, the open side of the upper cover 10 covering the open side of the box body 30. Of course, the battery box formed by the upper cover 10 and the box body 30 can be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

As shown in Figure 3, in a battery 100, there can be multiple battery cells 20, and the multiple battery cells 20 can be connected in series, in parallel, or in a hybrid connection. Hybrid connection means that the multiple battery cells 20 are connected both in series and in parallel. The multiple battery cells 20 can be directly connected in series, in parallel, or in a hybrid connection, and then the whole formed by the multiple battery cells 20 is housed in a box. Of course, the battery 100 can also be in the form of a battery module in which multiple battery cells 20 are first connected in series, in parallel, or in a hybrid connection, and the multiple battery modules are then connected in series, in parallel, or in a hybrid connection to form a whole and housed in a box. The battery 100 may also include other structures. For example, the battery 100 may also include a busbar component for achieving electrical connection between the multiple battery cells 20.

Each battery cell 20 may be a secondary battery cell or a primary battery cell; it may also be a lithium-sulfur battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, but is not limited thereto. The battery cell 20 may be cylindrical, flat, rectangular, or in other shapes.

Figure 3 is a partial structural schematic diagram of a battery provided in some embodiments of the present application; Figure 4 is a cross-sectional view of a battery provided in some embodiments of the present application; and Figure 5 is a partial schematic diagram of a battery provided in some embodiments of the present application.

3-5 , in a first aspect, an embodiment of the present application provides a battery 100, comprising a battery pack 400 and a compression assembly 500, wherein multiple rows of battery packs 400 are sequentially arranged along a first direction X, and each row of battery packs 400 comprises a plurality of battery cells 20 sequentially arranged and electrically connected to each other along a second direction Y; wherein the first direction X and the second direction Y are intersecting; the compression assembly 500 is disposed on the end cover of the battery cell 20 of the battery pack 400, and the compression assembly 500 respectively covers two adjacent rows of battery packs 400, and a heat exchange medium is disposed inside the compression assembly 500.

The compression assembly 500 can extend along the second direction Y and be disposed between two adjacent battery packs 400. The compression assembly 500 is disposed above the edges of the adjacent battery packs 400 along the first direction X, and above the end caps of the battery cells 20 of the battery packs 400, thereby securely connecting the adjacent battery packs 400. Exemplarily, the compression assembly 500 is disposed above the edges of the battery packs 400 in the first row and above the edges of the battery packs 400 in the second row.

A compression assembly 500 may be disposed between each two adjacent battery packs 400 to sequentially connect and secure all battery packs 400 to form a single, large module, thereby enhancing the structural strength of the battery 100. Compression assemblies 500 may or may not be disposed on the edges of the battery packs 400 on opposite sides along the first direction X. For example, compression assemblies 500 may not be disposed on the left side of the leftmost battery pack 400 or on the right side of the rightmost battery pack 400.

The battery 100 may further include a battery box, with the battery pack 400 placed within the box body 30. The box body 30 includes a bottom plate 61 and side plates 62 arranged along the circumference of the bottom plate 61. The compression assembly 500 is disposed on a side of the battery pack 400 facing away from the bottom plate 61. The end of the compression assembly 500 along the second direction Y may be connected to the side plate 62 of the box body, for example, by means of clips, bolts, etc., to further enhance the structural strength of the battery 100. Of course, the compression assembly 500 may also be connected only above the battery pack 400 and not connected to the box body.

At least part of the interior of the compression assembly 500 is hollow to accommodate a heat exchange medium. The heat exchange medium can be a liquid such as water or ethylene glycol. The heat exchange medium can be circulated through external connecting pipes and its temperature can be adjusted. When the temperature of the battery cell 20 is too high, the compression assembly 500 can cool the battery cell 20. When the temperature of the battery cell 20 is too low, the compression assembly 500 can keep the battery cell 20 warm, thereby improving the cycle performance of the battery 100.

Of course, the compression assembly 500 can also be a closed pipe structure, that is, the heat exchange medium within the compression assembly 500 cannot circulate. For example, the heat exchange medium is a liquid such as water or ethylene glycol. The vaporization temperature of the heat exchange medium matches the thermal management temperature requirement of the battery cells 20. When some battery cells 20 generate high temperatures due to overcurrent, the vaporization temperature of the liquid matches the thermal management temperature requirement of the battery cells 20. When some battery cells 20 generate high temperatures due to overcurrent, the liquid in the vicinity will quickly vaporize and remove some of the heat. When the gas diffuses to other, cooler battery cells 20, it will condense and release heat to achieve uniform heating. The heat exchange medium can also be a phase-changeable solid. Under certain temperature and pressure conditions, the solid will transform from one phase to another. For example, when some battery cells 20 generate high temperatures due to overcurrent, the solid heat exchange medium in the vicinity will undergo a phase change, generating a liquid that removes some of the heat. When the liquid diffuses to other, cooler battery cells 20, it will undergo another phase change, returning to a solid state, thereby achieving uniform heating.

In the above solution, the compression assembly 500 connects the battery packs 400 and presses on the adjacent battery packs 400, thereby enhancing the mechanical strength of the battery 100 and improving the stability of the battery 100. At the same time, a heat exchange medium is provided inside the compression assembly 500, through which the battery cells 20 can be heat-exchanged, so that the battery cells 20 can operate at a suitable temperature, thereby improving the cycle performance of the battery 100. The compression assembly 500 of the embodiment of the present application integrates the two functions of connecting and fixing adjacent battery packs 400 and exchanging heat for the battery cells 20. There is no need to set up a separate thermal management component on the same side surface of the battery as the pressure strip structure, which simplifies the structure and saves space, thereby improving the energy density of the battery 100.

FIG6 is a schematic structural diagram of a compression assembly provided in some embodiments of the present application.

As shown in Figure 6, in some embodiments, the pressing assembly 500 includes a pressing tube 51 and a sealing member 52. The pressing tube 51 extends along the second direction Y, and the heat exchange medium is arranged in the pressing tube 51; the two sealing members 52 are respectively arranged at the opposite ends of the pressing tube 51 along the second direction Y.

The pressure tube 51 is used to store heat exchange medium, and the sealing member 52 is used to seal the heat exchange medium inside the pressure tube 51. The sealing member 52 can be connected to the pressure tube 51 through a clamping connection such as an interference fit, bolt fastening, or welding. For example, the pressure tube 51 is a hollow rectangular parallelepiped with openings at both ends. The inner wall of the sealing member 52 wraps around the outer wall of the end of the pressure tube 51, sealing the openings of the pressure tube 51.

In the above solution, the sealing member 52 seals the pressing tube 51, thereby improving the sealing performance of the pressing assembly 500. Moreover, the pressing assemblies 500 of the present embodiment do not need to be connected and are independently provided, eliminating the need for connecting tubes and reducing the production cost of the battery 100.

FIG5 is a partial schematic diagram of a battery provided in some embodiments of the present application; FIG6 is a structural schematic diagram of a compression assembly provided in some embodiments of the present application.

Please refer to FIG. 5 and FIG. 6 . In some embodiments, a reinforcing rib 53 is provided on a side of the pressure tube 51 facing away from the battery pack 400 .

The reinforcing rib 53 and the pressing tube 51 can be manufactured by an integral molding process. The reinforcing rib 53 can extend along the second direction Y, or along the first direction X or any other direction. The number of the reinforcing rib 53 can be one or more.

The reinforcing ribs 53 enhance the overall structural strength of the compression tube 51, improving its bending and compression resistance, and helping to protect the battery pack 400 from external impact or compression. Furthermore, the reinforcing ribs 53 can also improve thermal management to a certain extent. By providing the reinforcing ribs 53 on the compression tube 51, heat conduction and heat dissipation can be enhanced, helping to maintain the battery 100 operating within an appropriate temperature range.

In some embodiments, the reinforcing rib 53 extends along the second direction Y.

In other words, the reinforcing rib 53 extends along the length of the compression tube 51, increasing the length of the reinforcing rib 53 and further improving the structural strength of the compression tube 51. The length of the reinforcing rib 53 along the second direction Y can be equal to the length of the compression tube 51 along the second direction Y. The length of the reinforcing rib 53 along the second direction Y can also be less than the length of the compression tube 51 along the second direction Y to facilitate connection between the end of the compression tube 51 and the blocking member 52.

In some embodiments, the reinforcing rib 53 includes a first sub-rib 531 and two second sub-ribs 532 . The two second sub-ribs 532 are respectively arranged on opposite sides of the pressing tube 51 along the first direction X, and the first sub-rib 531 is arranged between the two second sub-ribs 532 .

The first, second, and third sub-ribs 531, 532, and 533 extend along the second direction Y. The first sub-rib 531 can be positioned in the middle of the compression tube 51, while the second sub-rib 532 can be positioned at the edge of the compression tube 51. The reinforcing rib 53 is in a mountain shape. The cooperation between the first sub-rib 531 and the two second sub-ribs 532 further increases the rigidity of the compression tube 51 and its strength against deformation.

In some embodiments, the blocking member 52 is detachably disposed at the end of the pressure tube 51 .

The sealing member 52 can be removably connected to the end of the pressure tube 51 by means of a snap fit, interference fit, or other means. If the pressure tube 51 or the sealing member 52 is damaged, it can be replaced independently of the pressure tube 51 or the sealing member 52, without having to replace the entire pressure tube 51 assembly. If the heat exchange medium inside the pressure tube 51 needs to be replaced, the sealing member 52 can also be directly disassembled to facilitate replacement of the heat exchange medium.

In the above solution, by detachably arranging the blocking member 52 at the end of the pressure tube 51 , it is convenient to repair and replace damaged parts, thereby reducing costs.

FIG5 is a partial schematic diagram of a battery provided in some embodiments of the present application.

As shown in FIG. 5 , in some embodiments, the pressing assembly 500 is bonded to the battery pack 400 via a connecting adhesive layer 54 .

A connection adhesive can be applied to the bottom of the press assembly 500 and then attached to the battery pack 400. After the connection adhesive is cured, a connection adhesive layer 54 is formed. The connection adhesive layer 54 can be made of epoxy resin, acrylic resin glue, silicone rubber or polyurethane glue.

In the above solution, the pressing assembly 500 is bonded to the battery pack 400 via the connecting adhesive layer 54 , which is simple and easy to install and can improve the production efficiency of the battery 100 .

In some embodiments, the connection adhesive layer 54 is a thermally conductive adhesive layer.

The connecting adhesive layer 54 is made of a thermally conductive adhesive, such as silicone rubber, polyurethane, epoxy, or acrylic. This thermally conductive connecting adhesive layer 54 allows for faster transfer of heat from the battery cells 20 to the press assembly 500, thereby improving the heat exchange efficiency of the battery 100.

FIG7 is a schematic cross-sectional view of a press tube provided in some embodiments of the present application.

As shown in FIG. 7 , in some embodiments, the outer surface of the pressing assembly 500 is wrapped with an insulating layer 55 .

The insulating layer 55 can be made of insulating materials such as polyvinyl chloride, polyethylene, polypropylene, and polytetrafluoroethylene. If the compression assembly 500 is made of metal, wrapping the insulating layer 55 around the outside of the compression assembly 500 can prevent leakage of the battery 100 to a certain extent and improve the reliability of the battery 100.

In some embodiments, the first direction X is the length direction of the battery cell 20 , and the second direction Y is the width direction of the battery cell 20 .

In the above solution, the multiple battery cells 20 in each row of the battery pack 400 are arranged sequentially along the width of the battery cells 20, facilitating connection between the battery cells 20 and facilitating operation of the battery pack 400. Furthermore, the compression assembly 500 also extends along the width of the battery cells 20, allowing for the deployment of more compression assemblies 500, further improving the overall strength and thermal conductivity of the battery 100.

In a second aspect, an embodiment of the present application further provides an electrical device, comprising a battery 100 according to any of the above embodiments, wherein the battery 100 is used to provide electrical energy.

According to some embodiments of the present application, a battery 100 is provided, comprising a battery pack 400 and a compression assembly 500. Multiple rows of battery packs 400 are sequentially arranged along a first direction X, and each row of battery packs 400 includes a plurality of sequentially arranged and electrically connected battery cells 20 along a second direction Y. The compression assembly 500 is disposed on the end caps of the battery cells 20 of the battery pack 400, and the compression assembly 500 covers two adjacent rows of battery packs 400. A heat exchange medium is disposed within the compression assembly 500. The compression assembly 500 includes a compression tube 51 and a sealing member 52. The compression tube 51 extends along the second direction Y, and the heat exchange medium is disposed within the compression tube 51. Two sealing members 52 are disposed at opposite ends of the compression tube 51 along the second direction Y.

It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

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 them. 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. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (11)

A battery comprising: A battery pack, wherein multiple rows of the battery packs are arranged in sequence along a first direction, and each row of the battery packs includes multiple battery cells arranged in sequence and electrically connected to each other along a second direction; wherein the first direction and the second direction are arranged to intersect; The compression assembly is arranged on the end cover of the battery cell of the battery pack, and the compression assembly covers two adjacent rows of the battery packs respectively. A heat exchange medium is arranged inside the compression assembly. The battery according to claim 1, wherein the pressing assembly comprises: a press tube extending along the second direction, wherein the heat exchange medium is arranged in the press tube; The two blocking pieces are respectively arranged at the opposite ends of the pressure tube along the second direction. The battery according to claim 2, wherein a reinforcing rib is provided on a side of the pressure tube facing away from the battery pack. The battery according to claim 3, wherein the reinforcing rib extends along the second direction. The battery according to claim 3, wherein the reinforcing rib comprises a first sub-rib and two second sub-ribs, the two second sub-ribs are respectively arranged on opposite sides of the pressure tube along the first direction, and the first sub-rib is arranged between the two second sub-ribs. The battery according to claim 2, wherein the sealing member is detachably provided at the end of the pressure tube. The battery according to any one of claims 1 to 6, wherein the pressing assembly is bonded to the battery pack via a connecting adhesive layer. The battery according to claim 7, wherein the connecting adhesive layer is a thermally conductive adhesive layer. The battery according to any one of claims 1 to 8, wherein an outer surface of the compression assembly is wrapped with an insulating layer. The battery according to any one of claims 1 to 8, wherein the first direction is a length direction of the battery cell, and the second direction is a width direction of the battery cell. An electrical device comprising the battery according to any one of claims 1 to 10, wherein the battery is used to provide electrical energy.