Batteries and electrical equipment

Abstract

The embodiments of the present application provide a battery and an electrical device. The present application provides a battery, the battery comprising a first battery cell group, a second battery cell group and a heat exchange assembly. The first battery cell group and the second battery cell group are stacked along a first direction. At least part of the heat exchange assembly is disposed between the first battery cell group and the second battery cell group, and the heat exchange assembly and the first battery cell group are heat exchanged and connected in an air-cooled manner; and / or, the heat exchange assembly and the second battery cell group are heat exchanged and connected in an air-cooled manner. The technical solution provided in the present application can improve the reliability of the battery.

Description

Technical Field

[0001] The present application relates to the technical field of battery production, and in particular to a battery and electrical equipment. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development.

[0003] In the development of battery technology, how to improve battery reliability is a technical problem that needs to be solved urgently. Utility Model Content

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

[0005] This application is achieved through the following technical solutions:

[0006] In a first aspect, the present application provides a battery, the battery comprising a first battery cell group, a second battery cell group and a heat exchange assembly. The first battery cell group and the second battery cell group are stacked along a first direction. At least part of the heat exchange assembly is disposed between the first battery cell group and the second battery cell group, and the heat exchange assembly and the first battery cell group are heat exchanged in an air-cooled manner; and / or, the heat exchange assembly and the second battery cell group are heat exchanged in an air-cooled manner.

[0007] The technical solution of the embodiment of the present application is to dispose at least part of the heat exchange component between the first battery cell group and the second battery cell group, and to exchange heat with the first battery cell group by air cooling through the heat exchange component, and / or to exchange heat with the second battery cell group by air cooling through the heat exchange component, so as to reduce the risk of temperature affecting battery performance and improve battery reliability.

[0008] In some embodiments, the heat exchange component has an air cooling channel, and the heat exchange component exchanges heat with the first battery monomer group through the air cooling channel, and / or the heat exchange component exchanges heat with the second battery monomer group through the air cooling channel.

[0009] The technical solution of the embodiment of the present application reduces the risk of temperature affecting battery performance and improves battery reliability by exchanging heat with the first battery cell group through the air cooling channel provided in the heat exchange component, and / or exchanging heat with the second battery cell group through the air cooling channel provided in the heat exchange component.

[0010] In some embodiments, the air-cooling channel extends along the second direction, and openings are provided at both ends of the air-cooling channel. The air-cooling channel is connected to the outside through the openings, wherein the second direction is perpendicular to the first direction.

[0011] According to the technical solution of the embodiment of the present application, an opening is provided in the air-cooling channel to communicate with the outside, so as to facilitate direct heat exchange between the air-cooling channel and the outside, thereby improving the convenience of heat exchange.

[0012] In some embodiments, the heat exchange assembly further includes a blower mechanism, which is disposed at one end of the air-cooling channel, and is configured to blow air toward the air-cooling channel through the opening.

[0013] The technical solution of the embodiment of the present application is to provide a blower mechanism to blow air into the air-cooling channel through an opening, thereby increasing the air flow speed, improving the heat exchange effect of the air-cooling channel, and improving the reliability of the battery.

[0014] In some embodiments, the battery further includes a closure member disposed at the opening, wherein the closure member is configured to close at least a portion of the opening.

[0015] According to the technical solution of the embodiment of the present application, the sealing member seals at least a portion of the opening, and the temperature is adjusted by adjusting the opening, thereby improving the reliability of the battery.

[0016] In some embodiments, one end of the closure is rotatably connected to the heat exchange component, and the closure is configured to be rotatable relative to the heat exchange component to change the opening degree of the opening.

[0017] The technical solution of the embodiment of the present application is to configure the sealing member to be rotatable relative to the heat exchange component, thereby changing the opening degree of the opening, making it easier to adjust the temperature and improving the reliability of the battery.

[0018] In some embodiments, the battery further includes a driving member connected to the closing member and configured to drive the closing member to rotate relative to the heat exchange assembly.

[0019] The technical solution of the embodiment of the present application drives the closing member to rotate by the driving member, thereby saving manpower and improving the reliability of the battery.

[0020] In some embodiments, the heat exchange assembly includes a first heat exchange element and two second heat exchange elements, and the two second heat exchange elements are respectively arranged at both ends of the first heat exchange element in the third direction. In the first direction, the first heat exchange element is arranged between the first battery cell group and the second battery cell group, and in the third direction, the first battery cell group and the second battery cell group are arranged between the two second heat exchange elements, wherein the first direction and the third direction are perpendicular.

[0021] The technical solution of the embodiment of the present application realizes heat exchange with the first battery cell group and the second battery cell through the first heat exchange member and the second heat exchange member, thereby improving the heat exchange effect and improving the reliability of the battery.

[0022] In some embodiments, the air-cooling channel includes a first sub-air-cooling channel, which is disposed on the first heat exchange member. In the first direction, at least a portion of a projection of the first sub-air-cooling channel overlaps with the first battery cell group.

[0023] The technical solution of the embodiment of the present application is to set the projection of the first sub-air cooling channel to at least partially overlap with the second battery cell group, thereby improving the heat exchange effect and improving the reliability of the battery.

[0024] In some embodiments, the air-cooling channel includes a second sub-air-cooling channel, which is arranged on the second heat exchanger. In the third direction, at least part of the projection of the second sub-air-cooling channel overlaps with the first battery cell group, and at least part of the projection of the second sub-air-cooling channel overlaps with the second battery cell group.

[0025] According to the technical solution of the embodiment of the present application, at least part of the projection of the second sub-air-cooling flow channel overlaps with the first battery cell group, and at least part of the projection of the second sub-air-cooling flow channel overlaps with the second battery cell group, thereby improving the heat exchange effect and improving the reliability of the battery.

[0026] In some embodiments, the first heat exchange element has a first surface and a second surface disposed opposite to each other in a first direction, and the heat exchange assembly further includes a third heat exchange element and a fourth heat exchange element, the third heat exchange element is disposed on the first surface, and the fourth heat exchange element is disposed on the second surface;

[0027] The first battery cell group includes a plurality of first battery cell units, and the third heat exchange element is located between two adjacent first battery cell units; the second battery cell group includes a plurality of second battery cell units, and the fourth heat exchange element is located between two adjacent second battery cell units.

[0028] The technical solution of the embodiment of the present application is to improve the heat exchange effect and the reliability of the battery by arranging the third heat exchange element between two adjacent first battery monomer units and the fourth heat exchange element between two adjacent second battery monomer units.

[0029] In some embodiments, the air-cooling channel also includes a third sub-air-cooling channel, which is disposed on the third heat exchange element, and in the third direction, a portion of the projection of the third sub-air-cooling channel overlaps with the first battery cell group; and / or, the air-cooling channel also includes a fourth sub-air-cooling channel, which is disposed on the fourth heat exchange element, and in the third direction, a portion of the projection of the fourth sub-air-cooling channel overlaps with the second battery cell group.

[0030] The technical solution of the embodiment of the present application is to set a part of the projection of the third sub-air-cooling flow channel to overlap with the first battery monomer group, and a part of the projection of the fourth sub-air-cooling flow channel to overlap with the second battery monomer group, thereby improving the heat exchange effect and improving the reliability of the battery.

[0031] In some embodiments, the battery also includes a first end cover and a second end cover, the first end cover and the second end cover are arranged opposite to each other along a first direction, the first end cover and the second end cover are respectively connected to the two ends of the second heat exchange element in the first direction, the first battery cell group is arranged between the first end cover and the first heat exchange element, and the second battery cell group is arranged between the second end cover and the second heat exchange element.

[0032] According to the technical solution of the embodiment of the present application, the first end cover is arranged at an end of the first battery cell group away from the second battery cell group, and the second end cover is arranged at an end of the second battery cell group away from the first battery cell group, thereby reducing the risk of damage to the first battery cell group and the second battery cell group and improving the reliability of the battery.

[0033] In some embodiments, the battery includes a box body, the box body includes a first wall and a second wall, the two second walls are respectively arranged at two ends of the first wall in a third direction, in the first direction, the first wall is arranged between the first battery cell group and the second battery cell group; in the third direction, the first battery cell group and the second battery cell group are arranged between the two second walls;

[0034] Among them, the first wall is the first heat exchange element, and the second wall is the second heat exchange element.

[0035] According to the technical solution of the embodiment of the present application, the first heat exchange component is the first wall, the second heat exchange component is the second wall, and the heat exchange assembly forms a box body, thereby improving the capacity density of the battery.

[0036] In some embodiments, the battery further includes a pair of third end covers and a pair of fourth end covers, in the first direction, one end of the third end cover is connected to the first heat exchange member, and the other end is connected to the first end cover, and in the second direction, the first battery cell group is disposed between the pair of third end covers;

[0037] In the first direction, one end of the fourth end cover is connected to the second heat exchange member, and the other end is connected to the second end cover, and in the second direction, the second battery cell group is arranged between a pair of third end covers;

[0038] The second direction, the first direction and the third direction are perpendicular to each other.

[0039] The technical solution of the embodiment of the present application reduces the risk of damage to the first battery cell group and the second battery cell group and improves the reliability of the battery by arranging the third end cover at both ends of the first battery cell group in the second direction and the fourth end cover at both ends of the second battery cell group in the second direction.

[0040] In some embodiments, the battery further includes a heat conductor, which is disposed in a heat exchange assembly, wherein a portion of the heat conductor is in contact with a first battery cell group, and the heat exchange assembly exchanges heat with the first battery cell group through the heat conductor; and / or, a portion of the heat conductor is in contact with a second battery cell group, and the heat exchange assembly exchanges heat with the second battery cell group through the heat conductor.

[0041] According to the technical solution of the embodiment of the present application, the heat exchange assembly exchanges heat with the first battery cell group and the second battery cell group through the heat conductive member, thereby improving the heat exchange effect and improving the reliability of the battery.

[0042] In some embodiments, in a first direction, the first battery cell group includes a plurality of first battery cells, the second battery cell group includes a plurality of second battery cells, the first battery cell is provided with a first electrode terminal at one end facing away from the second battery cell, and the second battery cell is provided with a second electrode terminal at one end facing away from the first battery cell.

[0043] The technical solution of the embodiment of the present application installs the first battery cell group and the second battery cell group through a heat exchange component, which saves materials, reduces the weight of the battery, and improves the capacity density of the battery.

[0044] In a second aspect, the present application further provides an electrical device, the electrical device comprising a battery as in any embodiment of the first aspect, the battery being used to provide electrical energy to the electrical device.

[0045] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 A schematic diagram of the structure of a vehicle provided in some embodiments of the present application;

[0048] Figure 2 An exploded view of a battery provided for some embodiments of the present application;

[0049] Figure 3 A schematic diagram of the internal structure of a battery provided in some embodiments of the present application;

[0050] Figure 4 A schematic diagram of the structure of a battery provided in some embodiments of the present application;

[0051] Figure 5 for Figure 4 The enlarged view of A in FIG.

[0052] Figure 6 A schematic diagram of the structure of a battery improved in some other embodiments of the present application;

[0053] Figure 7 for Figure 6 The enlarged view of point B in FIG.

[0054] Figure 8 for Figure 6 A structural diagram from another perspective;

[0055] Fig. 9 Schematic diagram of the internal structure of a battery provided in some other embodiments of the present application.

[0056] Icons: 1-battery; 10-first battery cell group; 11-first battery cell unit; 12-first battery cell; 13-first electrode terminal; 20-second battery cell group; 21-second battery cell unit; 22-second battery cell; 23-second electrode terminal; 30-heat exchange assembly; 31-air blowing mechanism; 32-first heat exchange element; 321-first surface; 322-second surface; 33-second heat exchange element; 34-third heat exchange element; 35-fourth heat exchange element; 40-air cooling flow Channel; 41-opening; 42-first sub-air-cooling channel; 43-second sub-air-cooling channel; 44-third sub-air-cooling channel; 45-fourth sub-air-cooling channel; 50-closing member; 60-driving member; 70-first end cover; 71-second end cover; 72-third end cover; 73-fourth end cover; 80-heat conducting member; 90-housing; 91-first wall; 92-second wall; 1000-vehicle; 1100-controller; 1200-motor; X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0057] 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 and completely 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.

[0058] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning 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.

[0059] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations 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. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0060] 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.

[0061] 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.

[0062] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0063] In some embodiments, the battery may be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0064] In some embodiments, the battery may be a battery pack, which includes a battery box and battery cells. The battery box has a receiving cavity for receiving the battery cells, and the battery cells or battery modules are received in the battery box.

[0065] In some embodiments, the battery box can be used as part of the chassis structure of the vehicle. For example, part of the battery box can become at least a part of the floor of the vehicle, or part of the battery box can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0066] In some embodiments, the battery may be an energy storage device, which includes an energy storage container, an energy storage cabinet, and the like.

[0067] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0068] The battery cells may be, but are not limited to, lithium ion batteries, sodium ion batteries, sodium lithium ion batteries, lithium metal batteries, sodium metal batteries, lithium sulfur batteries, magnesium ion batteries, nickel hydrogen batteries, nickel cadmium batteries, lead storage batteries, etc.

[0069] As an example, the battery cell may be a pouch battery cell.

[0070] A battery cell generally includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed between the positive electrode and the negative electrode. The separator is set between the positive electrode and the negative electrode to prevent the positive and negative electrodes from short-circuiting, while allowing active ions to pass through.

[0071] In some embodiments, the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0072] As an example, the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is disposed on either or both of the two facing surfaces of the positive electrode current collector.

[0073] As an example, the positive electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc., may be used. The composite current collector may include a polymer material base and a metal layer. The composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0074] As an example, the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present application is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for batteries may also be used.

[0075] In some embodiments, the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.

[0076] As an example, the negative electrode current collector may be a metal foil or a composite current collector. For example, as the metal foil, aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used.

[0077] In some embodiments, the negative electrode current collector has two surfaces opposite to each other in its thickness direction, and the negative electrode active material is disposed on any one or both of the two opposite surfaces of the negative electrode current collector.

[0078] As an example, the negative electrode active material may adopt the negative electrode active material for the battery known in the art. As an example, the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials and lithium titanate, etc. The silicon-based material may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites and silicon alloys. The tin-based material may be selected from at least one of elemental tin, tin oxide compounds and tin alloys. However, the present application is not limited to these materials, and other traditional materials that can be used as negative electrode active materials for batteries may also be used. These negative electrode active materials may be used alone or in combination of two or more.

[0079] In some embodiments, the separator is a membrane. The present application has no particular limitation on the type of the membrane, and any known porous membrane with good chemical stability and mechanical stability can be selected.

[0080] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without special restrictions. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without special restrictions. The separator can be a separate component located between the positive and negative electrodes, or it can be attached to the surface of the positive and negative electrodes.

[0081] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transmit ions and isolate the positive and negative electrodes.

[0082] At present, from the perspective of market development, batteries have been widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as electric tools, drones, energy storage equipment, etc. With the continuous expansion of battery application areas, the market demand is also constantly expanding.

[0083] The development of battery technology must take into account many design factors at the same time, such as energy density, cycle life, discharge capacity, charge and discharge rate and other performance parameters. In addition, battery reliability is also one of the key factors to be considered.

[0084] Currently, multiple battery cells can be arranged horizontally or vertically to form a battery cell group. Two or more battery cells are stacked and placed in a battery box in series or in parallel to form a battery, which is then used to power electrical devices.

[0085] However, due to the influence of the external environment, or the temperature of the battery cells may rise during operation, resulting in the battery temperature being higher or lower, which poses a risk of affecting the battery's charge and discharge performance, and also poses a safety hazard, affecting the reliability of the battery.

[0086] Based on the above considerations, in order to adjust the temperature of the battery, reduce the risk of affecting the reliability of the battery, and improve the reliability of the battery, an embodiment of the present application provides a battery, the battery comprising a first battery cell group, a second battery cell group and a heat exchange assembly. The first battery cell group and the second battery cell group are stacked along a first direction. At least part of the heat exchange assembly is arranged between the first battery cell group and the second battery cell group, and the heat exchange assembly and the first battery cell group are heat exchanged in an air-cooled manner; and / or, the heat exchange assembly and the second battery cell group are heat exchanged in an air-cooled manner.

[0087] A heat exchange component is provided to exchange heat with the first battery monomer group through the heat exchange component, and / or to exchange heat with the second battery monomer group through the heat exchange component, so as to reduce the risk of temperature affecting battery performance and improve battery reliability.

[0088] The battery disclosed in the embodiment of the present application can be used in, but not limited to, electrical equipment such as vehicles, ships or aircraft. The battery disclosed in the present application can be used to form a power supply system of the electrical equipment.

[0089] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric car, a ship, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

[0090] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0091] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application. Vehicle 1000 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, etc. A battery 1 is provided inside vehicle 1000, and battery 1 may be provided at the bottom, head or tail of vehicle 1000. Battery 1 may be used to power vehicle 1000, for example, battery 1 may be used as an operating power source for vehicle 1000, for the circuit system of vehicle 1000, for example, for the working power requirements during the startup, navigation and operation of vehicle 1000.

[0092] The vehicle 1000 may further include a controller 1100 and a motor 1200 , wherein the controller 1100 is used to control the battery 1 to supply power to the motor 1200 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1000 .

[0093] In some embodiments of the present application, the battery 1 can be used 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.

[0094] Please refer to Figure 2 and Figure 3 , Figure 2 An exploded view of a battery provided in some embodiments of the present application, Figure 3 Schematic diagram of the internal structure of a battery provided for some embodiments of the present application. An embodiment of the present application provides a battery 1, which includes a first battery cell group 10, a second battery cell group 20 and a heat exchange assembly 30. The first battery cell group 10 and the second battery cell group 20 are stacked along a first direction X. At least a portion of the heat exchange assembly 30 is disposed between the first battery cell group 10 and the second battery cell group 20, and the heat exchange assembly 30 is connected to the first battery cell group 10 by air cooling; and / or, the heat exchange assembly 30 and the second battery cell group 20 are connected by air cooling.

[0095] In some embodiments, the first direction may be represented by the direction indicated by the letter X in the figure.

[0096] In some embodiments, the first direction X may be a height direction of the battery 1 , that is, the first direction X may be parallel to the gravity direction.

[0097] In some embodiments, the first battery cell group 10 may include a plurality of battery cells 1 arranged in a transverse direction and / or a longitudinal direction, and the plurality of battery cells 1 are connected in series and / or in parallel to form the first battery cell group 10 .

[0098] In some embodiments, the second battery cell group 20 may include a plurality of battery cells 1 arranged in a transverse direction and / or a longitudinal direction and connected in series and / or in parallel to form the first battery cell group 10 .

[0099] In some embodiments, the arrangement and number of battery 1 cells in the first battery cell group 10 can be exactly the same as the arrangement and number of battery 1 cells in the second battery cell group 20. Taking the first direction X as the projection direction, the projection of the first battery cell group 10 and the projection of the second battery cell group 20 can overlap.

[0100] In some embodiments, the heat exchange component 30 may be a heat exchange plate, a heat exchange tube, a fan, etc.

[0101] In some embodiments, the heat exchange assembly 30 may be disposed between the first battery cell group 10 and the second battery cell group 20 as a part of a separator between the first battery cell group 10 and the second battery cell group 20 .

[0102] In some embodiments, the heat exchange assembly 30 may only exchange heat with the first battery cell group 10 , but not with the second battery cell group 20 .

[0103] In some embodiments, the heat exchange assembly 30 may only exchange heat with the second battery cell group 20 , but not with the first battery cell group 10 .

[0104] In some embodiments, the heat exchange assembly 30 can exchange heat with the first battery cell group 10 while exchanging heat with the second battery cell group 20. A portion of the heat exchange assembly 30 can be disposed between the first battery cell group 10 and the second battery cell group 20, and the other portion can be disposed at other locations of the first battery cell group 10, and / or the other portion can be disposed at other locations of the second battery cell group 20.

[0105] In some embodiments, all of the heat exchange assembly 30 may be disposed between the first battery cell group 10 and the second battery cell group 20 .

[0106] In some embodiments, the heat exchange assembly 30 is disposed between the first battery cell group 10 and the second battery cell group 20 and can serve as a separator between the first battery cell group 10 and the second battery cell group 20. Alternatively, a separate separator may be provided in the battery 1 and the heat exchange assembly 30 is disposed on the separator.

[0107] According to the technical solution of the embodiment of the present application, at least a portion of the heat exchange component 30 is disposed between the first battery cell group 10 and the second battery cell group 20, and heat is exchanged with the first battery cell group 10 and the second battery cell group 20 respectively through the air cooling channel 40 disposed in the heat exchange component 30, thereby reducing the risk of temperature affecting the performance of the battery 1 and improving the reliability of the battery 1.

[0108] Please refer to Figure 2 and Figure 3 In some embodiments, the heat exchange component 30 has an air cooling channel 40 , and the heat exchange component 30 exchanges heat with the first battery monomer group 10 through the air cooling channel 40 ; and / or, the heat exchange component 30 exchanges heat with the second battery monomer group 20 through the air cooling channel 40 .

[0109] In some embodiments, the heat exchange assembly 30 has an air cooling channel 40 , and the air cooling channel 40 can exchange heat with the first battery cell group 10 and / or the second battery cell group 20 by circulating air medium for heat exchange.

[0110] In some embodiments, the heat exchange component 30 may be made of a metal with good thermal conductivity, such as copper, aluminum, aluminum alloy, etc.

[0111] In some embodiments, the air cooling channel 40 of the heat exchange component 30 may be formed by rolling and then extruding the heat exchange component 30 as a whole.

[0112] In some embodiments, the heat exchange component 30 may be composed of several parts, each of which is extruded as a whole to form the air-cooling channel 40, and then the parts are connected by welding.

[0113] In some embodiments, the heat exchange assembly 30 exchanges heat with the first battery cell group 10 and the second battery cell group 20 through the air cooling channel 40, which is not limited to cooling the first battery cell group 10 and the second battery cell group 20, but can also heat or keep the first battery cell group 10 and the second battery cell group 20 warm.

[0114] In some embodiments, the heat exchange assembly 30 may exchange heat with the first battery cell group 10 through the air cooling channel 40 .

[0115] In some embodiments, the heat exchange assembly 30 may exchange heat with the second battery cell group 20 through the air cooling channel 40 .

[0116] In some embodiments, the heat exchange assembly 30 can exchange heat with the first battery cell group 10 through the air cooling channel 40 while exchanging heat with the second battery cell group 20 through the air cooling channel 40 .

[0117] In some embodiments, the first battery cell group 10 and the second battery cell group 20 may share the air cooling channel 40 .

[0118] In some embodiments, the heat exchange assembly 30 may include a plurality of air cooling channels 40 for respectively exchanging heat with the first battery cell group 10 and the second battery cell group 20 .

[0119] The technical solution of the embodiment of the present application reduces the risk of temperature affecting the performance of the battery 1 and improves the reliability of the battery 1 by exchanging heat with the first battery cell group 10 through the air cooling channel 40 provided in the heat exchange component 30, and / or exchanging heat with the second battery cell group 20 through the air cooling channel 40 provided in the heat exchange component 30.

[0120] Please refer to Figure 2 and Figure 3 , and refer to Figure 4 and Figure 5 , Figure 4 A schematic diagram of the structure of a battery provided in some embodiments of the present application, Figure 5 for Figure 4 In some embodiments, the air-cooling channel 40 extends along the second direction Y, and both ends of the air-cooling channel 40 are provided with openings 41, and the air-cooling channel 40 is connected to the outside through the openings 41, wherein the second direction Y is perpendicular to the first direction X.

[0121] In some embodiments, the second direction may be represented by the direction indicated by the letter Y in the figure.

[0122] In some embodiments, the second direction Y may be a length direction of the battery 1 , the first direction X may be a height direction of the battery 1 , and the first direction X and the second direction Y may be perpendicular.

[0123] In some embodiments, the air-cooling channel 40 extends along the second direction Y, and the air-cooling channel 40 can pass through both ends of the heat exchange component 30 in the second direction Y. The opening 41 can be set on the end surface of the heat exchange component 30 in the second direction Y, so that the air-cooling channel 40 is connected to the outside through the opening 41.

[0124] In some embodiments, the exterior may be the exterior of the battery 1 , that is, the opening 41 is disposed on the outer end surface of the battery 1 .

[0125] In some embodiments, the heat exchange medium may enter the air-cooling flow channel 40 from the opening 41 at one end of the air-cooling flow channel 40 , and flow out of the air-cooling flow channel 40 from the opening 41 at the other end.

[0126] According to the technical solution of the embodiment of the present application, the air-cooling channel 40 is provided with an opening 41 which is connected to the outside, so as to facilitate direct heat exchange between the air-cooling channel 40 and the outside, thereby improving the convenience of heat exchange.

[0127] Please refer to Figures 6 to 8 , Figure 6 This is a schematic diagram of the structure of a battery improved in some other embodiments of the present application, Figure 7 for Figure 6 The enlarged view of point B in the figure, Figure 8 for Figure 6 A schematic diagram of the structure from another perspective.

[0128] In some embodiments, the heat exchange assembly 30 further includes a blower mechanism 31 , which is disposed at one end of the air-cooling channel 40 , and is configured to blow air toward the air-cooling channel 40 through the opening 41 .

[0129] In some embodiments, the blowing mechanism 31 may be a fan, a blower, an exhaust fan, etc.

[0130] In some embodiments, the air blowing mechanism 31 may be disposed at the opening 41 , and in the second direction Y, the projection of the air blowing mechanism 31 may at least partially overlap with the projection of the opening 41 , so that the air blowing mechanism 31 can blow air directly into the air cooling channel 40 .

[0131] In some embodiments, the air blowing mechanism 31 can blow air along the third direction Z, so that the airflow blown out by the air blowing mechanism 31 enters the air cooling channel 40 from the opening 41 when passing through the opening 41 .

[0132] In some embodiments, the blower mechanism 31 may be connected to the battery box of the battery 1 or may be disposed on an external bracket.

[0133] In some embodiments, the air blowing mechanism 31 may be disposed on one side of the battery box, and the air outlet of the air blowing mechanism 31 is connected to the opening 41 via a pipe, so that the air blown out by the air blowing mechanism 31 is blown into the opening 41 via the pipe.

[0134] The technical solution of the embodiment of the present application is to set a blower mechanism 31 to blow air to the air-cooling channel 40 through the opening 41, thereby increasing the air flow speed, improving the heat exchange effect of the air-cooling channel 40, and improving the reliability of the battery 1.

[0135] Please refer to Figures 6 to 8 In some embodiments, the battery 1 further includes a closure member 50 , which is disposed at the opening 41 and is configured to close at least a portion of the opening 41 .

[0136] In some embodiments, the closing member 50 may be a plate or other components so that the closing member 50 can cover the opening 41 .

[0137] In some embodiments, the sealing member 50 may be disposed outside the air-cooling channel 40 .

[0138] In some embodiments, the sealing member 50 may be disposed inside the air-cooling channel 40 .

[0139] In some embodiments, the sealing member 50 can rotate relative to the air cooling channel 40. When the temperature of the battery 1 needs to be quickly adjusted, the sealing member 50 can only seal a small part of the opening 41, or completely not seal the opening 41. When the battery 1 needs to be kept warm, the sealing member 50 can cover part of the opening 41 to reduce the speed of heat loss from the battery 1.

[0140] In the technical solution of the embodiment of the present application, the sealing member 50 seals at least a portion of the opening 41 , and the temperature is adjusted by adjusting the opening 41 , thereby improving the reliability of the battery 1 .

[0141] Please refer to Figures 6 to 8 In some embodiments, one end of the closure member 50 is rotatably connected to the heat exchange assembly 30 , and the closure member 50 is configured to be rotatable relative to the heat exchange assembly 30 to change the opening degree of the opening 41 .

[0142] In some embodiments, one end of the sealing member 50 is rotatably connected to the heat exchange assembly 30 , and the connection method may be a shaft connection. The shaft may be disposed on the heat exchange assembly 30 , and the shaft passes through one end of the sealing member 50 .

[0143] The rotation axis may extend along the first direction X, and the closing member 50 rotates around the rotation axis to change the opening degree of the opening 41. The rotation axis may extend along the third direction Z, and the closing member 50 rotates around the rotation axis to change the opening degree of the opening 41.

[0144] The third direction Z may be perpendicular to the first direction X and the second direction Y. The third direction may be represented by the direction indicated by the letter Z in the figure. The third direction Z may be the width direction of the battery 1, the first direction X may be the height direction of the battery 1, and the second direction Y may be the length direction of the battery 1.

[0145] In some embodiments, one end of the closure member 50 is rotatably connected to the heat exchange assembly 30, and the connection may be hinged, so that the closure member 50 can have multiple rotational degrees of freedom.

[0146] The technical solution of the embodiment of the present application is to configure the sealing member 50 to be rotatable relative to the heat exchange assembly 30, thereby changing the opening degree of the opening 41, making it easier to adjust the temperature and improving the reliability of the battery 1.

[0147] Please refer to Figures 6 to 8 In some embodiments, the battery 1 further includes a driving member 60 , which is connected to the closing member 50 and is used to drive the closing member 50 to rotate relative to the heat exchange assembly 30 .

[0148] In some embodiments, the driving member 60 may be connected to the closing member 50 via a connecting rod to drive the closing member 50 to rotate.

[0149] In some embodiments, there may be multiple closing members 50 and one driving member 60 . One driving member 60 is correspondingly connected to multiple closing members 50 via multiple connecting rods to drive the closing members 50 to rotate.

[0150] There may be more than one driving member 60 , and the plurality of driving members 60 are correspondingly connected to the plurality of closing members 50 to drive the closing members 50 to rotate.

[0151] In some embodiments, the driving member 60 may drive a plurality of closing members 50 to rotate simultaneously, or the driving member 60 may only drive one or more closing members 50 to rotate, while the other closing members 50 remain stationary.

[0152] The technical solution of the embodiment of the present application drives the closing member 50 to rotate by the driving member 60 , thereby saving manpower and improving the reliability of the battery 1 .

[0153] Please refer to Figures 3 to 5 In some embodiments, the heat exchange assembly 30 includes a first heat exchange element 32 and two second heat exchange elements 33, and the two second heat exchange elements 33 are respectively arranged at both ends of the first heat exchange element 32 in the third direction Z. In the first direction X, the first heat exchange element 32 is arranged between the first battery cell group 10 and the second battery cell group 20, and in the third direction Z, the first battery cell group 10 and the second battery cell group 20 are arranged between the two second heat exchange elements 33, wherein the first direction X and the third direction Z are perpendicular.

[0154] In some embodiments, the third direction may be represented by a direction indicated by a letter Z in the figure. The first direction X may be a height direction of the battery 1 , and the third direction Z may be a width direction of the battery 1 .

[0155] In some embodiments, taking the second direction Y as the projection direction, the projection of the first heat exchange element 32 may extend along the third direction Z, and the projection of the second heat exchange element 33 may extend along the first direction X.

[0156] In some embodiments, the first heat exchange element 32 and the second heat exchange element 33 can be connected by bonding, welding, bolting, etc.

[0157] In some embodiments, the first heat exchange element 32 and the second heat exchange element 33 may be integrally formed.

[0158] In some embodiments, the first heat exchange member 32 may be a partition plate that separates the first battery cell group 10 from the second battery cell group 20 , or may be a load-bearing beam that fixes the first battery cell group 10 and the second battery cell group 20 .

[0159] In some embodiments, the first battery cell group 10 and the second battery cell group 20 are disposed between two second heat exchange members 33 , and the second heat exchange member 33 may be an end plate of the battery 1 in the third direction Z.

[0160] In some embodiments, the first heat exchange element 32 is connected to the second heat exchange element 33, and the two ends of the second heat exchange element 33 in the first direction X can be respectively located on both sides of the first heat exchange element 32 in the first direction X, a part of the second heat exchange element 33 corresponds to the first battery cell group 10, and the other part of the second heat exchange element 33 corresponds to the second battery cell group 20.

[0161] The technical solution of the embodiment of the present application realizes heat exchange with the first battery cell group 10 and the second battery cell 22 through the first heat exchange element 32 and the second heat exchange element 33, thereby improving the heat exchange effect and improving the reliability of the battery 1.

[0162] Please refer to Figures 3 to 5 In some embodiments, the air-cooling channel 40 includes a first sub-air-cooling channel 42, which is disposed on the first heat exchange element 32. In the first direction X, at least a portion of the projection of the first sub-air-cooling channel 42 overlaps with the first battery cell group 10, and at least a portion of the projection of the first sub-air-cooling channel 42 overlaps with the second battery cell group 20.

[0163] In some embodiments, the first sub-air-cooling channel 42 is disposed on the first heat exchange element 32, the first sub-air-cooling channel 42 extends along the second direction Y, the first sub-air-cooling channel 42 passes through both ends of the first heat exchange element 32 in the second direction Y, and the openings 41 at both ends of the first sub-air-cooling channel 42 are respectively disposed on the two end surfaces of the first heat exchange element 32 in the second direction Y.

[0164] In some embodiments, there are multiple first sub-air-cooling channels 42 , and the multiple first sub-air-cooling channels 42 can be arranged at intervals along the third direction Z, or can be arranged at intervals along the first direction X.

[0165] The first sub-air-cooling channel 42 may be provided with a closing piece 50 , and the number of the closing pieces 50 may be two, one closing piece 50 corresponding to the openings 41 at one end of all the first sub-air-cooling channels 42 in the second direction Y, and the other closing piece 50 corresponding to the openings 41 at the other end of all the first sub-air-cooling channels 42 in the second direction Y.

[0166] The number of the closing members 50 may be multiple groups. One group of closing members 50 includes two closing members 50 . The two closing members 50 are arranged opposite to each other along the second direction Y. Each group of closing members 50 corresponds to each first sub-air-cooling channel 42 .

[0167] In some embodiments, with the first direction X as the projection direction, the projection of the first sub-air-cooling channel 42 may completely overlap with the projection of the first battery cell group 10, and the projection of the first sub-air-cooling channel 42 may completely overlap with the projection of the second battery cell group 20. The projection of the first sub-air-cooling channel 42 may also exceed the projection of the first battery cell group 10, and the projection of the first sub-air-cooling channel 42 may also exceed the projection of the second battery cell group 20. The projection of the first battery cell group 10 may also exceed the projection of the first sub-air-cooling channel 42, and the projection of the second battery cell group 20 may also exceed the projection of the first sub-air-cooling channel 42.

[0168] According to the technical solution of the embodiment of the present application, at least a portion of the projection of the first sub-air cooling channel 42 is overlapped with the second battery cell group 20 , thereby improving the heat exchange effect and the reliability of the battery 1 .

[0169] In some embodiments, the air-cooling channel 40 includes a second sub-air-cooling channel 43, which is disposed on the second heat exchange element 33. In the third direction Z, at least a portion of the projection of the second sub-air-cooling channel 43 overlaps with the first battery cell group 10, and at least a portion of the projection of the second sub-air-cooling channel 43 overlaps with the second battery cell group 20.

[0170] In some embodiments, the second sub-air-cooling channel 43 is arranged on the second heat exchanger 33, the second sub-air-cooling channel 43 extends along the second direction Y, the second sub-air-cooling channel 43 runs through both ends of the second heat exchanger 33 in the second direction Y, and the openings 41 at both ends of the second sub-air-cooling channel 43 are respectively arranged on the two end surfaces of the second heat exchanger 33 in the second direction Y.

[0171] In some embodiments, there are multiple second sub-air-cooling channels 43 , and the multiple second sub-air-cooling channels 43 can be arranged at intervals along the first direction X, or can be arranged at intervals along the third direction Z.

[0172] In some embodiments, the shapes and sizes of the plurality of second sub-air-cooling channels 43 may be at least partially the same, or may be completely different.

[0173] The second sub-air-cooling channel 43 may be provided with a closing piece 50, and the number of the closing pieces 50 may be two, one closing piece 50 corresponding to the openings 41 at one end of all the second sub-air-cooling channels 43 in the second direction Y, and the other closing piece 50 corresponding to the openings 41 at the other end of all the second sub-air-cooling channels 43 in the second direction Y.

[0174] The number of the closing members 50 may be multiple groups. One group of closing members 50 includes two closing members 50 . The two closing members 50 are arranged opposite to each other along the second direction Y. Each group of closing members 50 corresponds to each second sub-air-cooling channel 43 .

[0175] In some embodiments, the first sub-air-cooling channel 42 and the second sub-air-cooling channel 43 may both be provided with a sealing member 50 .

[0176] In some embodiments, with the third direction Z as the projection direction, a portion of the projection of the second sub-air-cooling runner 43 may overlap with the projection of the first sub-air-cooling runner 42. With the projection of the first sub-air-cooling runner 42 as the dividing line, the projection of one end of the second sub-air-cooling runner 43 may overlap with the projection of the first battery cell group 10, and the projection of the other end of the second sub-air-cooling runner 43 may overlap with the projection of the second battery cell group 20. With the projection of the first sub-air-cooling runner 42 as the dividing line, the projection of one end of the second sub-air-cooling runner 43 may exceed the projection of the first battery cell group 10, and the projection of the other end of the second sub-air-cooling runner 43 may exceed the projection of the second battery cell group 20. The projection of the first battery cell group 10 may exceed the projection of one end of the second sub-air-cooling runner 43, and the projection of the second battery cell group 20 may exceed the projection of the other end of the second sub-air-cooling runner 43.

[0177] According to the technical solution of the embodiment of the present application, at least part of the projection of the second sub-air-cooling channel 43 overlaps with the first battery cell group 10 , and at least part of the projection of the second sub-air-cooling channel 43 overlaps with the second battery cell group 20 , thereby improving the heat exchange effect and improving the reliability of the battery 1 .

[0178] Please refer to Figures 3 to 5 In some embodiments, the first heat exchange member 32 has a first surface 321 and a second surface 322 that are arranged opposite to each other in the first direction X. The heat exchange assembly 30 further includes a third heat exchange member 34 and a fourth heat exchange member 35. The third heat exchange member 34 is arranged on the first surface 321, and the fourth heat exchange member 35 is arranged on the second surface 322. The first battery cell group 10 includes a plurality of first battery cell units 11, and the third heat exchange member 34 is located between two adjacent first battery cell units 11; the second battery cell group 20 includes a plurality of second battery cell units 21, and the fourth heat exchange member 35 is located between two adjacent second battery cell units 21.

[0179] In some embodiments, in the first direction X, the first heat exchange member 32 has a first surface 321 and a second surface 322 that are oppositely disposed. The first surface 321 may be a surface facing the first battery cell group 10 , and the second surface 322 may be a surface facing the second battery cell group 20 .

[0180] In some embodiments, taking the second direction Y as the projection direction, the projection of the third heat exchange element 34 may extend along the first direction X, and the projection of the fourth heat exchange element 35 may extend along the first direction X.

[0181] In some embodiments, taking the first direction X as the projection direction, the projection of the third heat exchange element 34 and the projection of the fourth heat exchange element 35 may overlap.

[0182] In some embodiments, the third heat exchange element 34 and the fourth heat exchange element 35 may both be partition plates.

[0183] In some embodiments, the first battery cell group 10 may include a plurality of first battery cell units 11 , and the first battery cell unit 11 may include a plurality of battery 1 cells, and the plurality of battery 1 cells may be arranged along the second direction Y to form the first battery cell unit 11 in series or in parallel.

[0184] In some embodiments, the plurality of first battery cell units 11 may be arranged along the third direction Z.

[0185] In some embodiments, the second battery cell group 20 may include a plurality of second battery cell units 21 , and the second battery cell unit 21 may include a plurality of battery 1 cells, and the plurality of battery 1 cells may be arranged along the second direction Y to form the second battery cell unit 21 in series or in parallel.

[0186] In some embodiments, the plurality of second battery cell units 21 may be arranged along the third direction Z.

[0187] In some embodiments, the number of the first battery monomer units 11 may be two, and the number of the third heat exchange element 34 may be one.

[0188] In some embodiments, the number of the second battery monomer units 21 may be two, and the number of the fourth heat exchange element 35 may be one.

[0189] In some embodiments, the third heat exchange element 34 can be connected to the first heat exchange element 32 by welding, bonding, or bolting.

[0190] In some embodiments, the fourth heat exchange element 35 can be connected to the first heat exchange element 32 by welding, bonding, or bolting.

[0191] In some embodiments, the third heat exchange element 34 and the fourth heat exchange element 35 may be integrally formed with the first heat exchange element 32 .

[0192] The technical solution of the embodiment of the present application is to improve the heat exchange effect and the reliability of the battery 1 by disposing the third heat exchange element 34 between two adjacent first battery monomer units 11 and the fourth heat exchange element 35 between two adjacent second battery monomer units 21.

[0193] Please refer to Figures 3 to 5In some embodiments, the air-cooling channel 40 further includes a third sub-air-cooling channel 44, which is disposed on the third heat exchange element 34, and in the third direction Z, a portion of the projection of the third sub-air-cooling channel 44 overlaps with the first battery cell group 10; and / or, the air-cooling channel 40 further includes a fourth sub-air-cooling channel 45, which is disposed on the fourth heat exchange element 35, and in the third direction Z, a portion of the projection of the fourth sub-air-cooling channel 45 overlaps with the second battery cell group 20.

[0194] In some embodiments, the third sub-air cooling channel 44 is disposed on the third heat exchange element 34, the third sub-air cooling channel 44 extends along the second direction Y, the third sub-air cooling channel 44 passes through both ends of the third heat exchange element 34 in the second direction Y, and the openings 41 at both ends of the third sub-air cooling channel 44 are respectively disposed on the two end surfaces of the third heat exchange element 34 in the second direction Y.

[0195] In some embodiments, there are multiple third sub-air-cooling channels 44 , and the multiple third sub-air-cooling channels 44 can be arranged at intervals along the first direction X, or can be arranged at intervals along the third direction Z.

[0196] The third sub-air-cooling channel 44 may be provided with a closing piece 50 , and the number of the closing pieces 50 may be two, one closing piece 50 corresponding to the openings 41 at one end of all the third sub-air-cooling channels 44 in the second direction Y, and the other closing piece 50 corresponding to the openings 41 at the other end of all the third sub-air-cooling channels 44 in the second direction Y.

[0197] The number of the closing members 50 may be multiple groups. One group of closing members 50 includes two closing members 50 . The two closing members 50 are arranged opposite to each other along the second direction Y. Each group of closing members 50 corresponds to each third sub-air-cooling channel 44 .

[0198] In some embodiments, the fourth sub-air-cooling channel 45 is arranged on the fourth heat exchange element 35, the fourth sub-air-cooling channel 45 extends along the second direction Y, the fourth sub-air-cooling channel 45 runs through both ends of the fourth heat exchange element 35 in the second direction Y, and the openings 41 at both ends of the fourth sub-air-cooling channel 45 are respectively arranged on the two end surfaces of the fourth heat exchange element 35 in the second direction Y.

[0199] In some embodiments, there are multiple fourth sub-air-cooling channels 45 , and the multiple fourth sub-air-cooling channels 45 can be arranged at intervals along the first direction X, or can be arranged at intervals along the third direction Z.

[0200] The fourth sub-air-cooling channel 45 can be provided with a closing piece 50, and the number of the closing pieces 50 can be two, one closing piece 50 corresponds to the opening 41 at one end of all the fourth sub-air-cooling channels 45 in the second direction Y, and the other closing piece 50 corresponds to the opening 41 at the other end of all the fourth sub-air-cooling channels 45 in the second direction Y.

[0201] The number of the closing members 50 may be multiple groups. One group of closing members 50 includes two closing members 50 . The two closing members 50 are arranged opposite to each other along the second direction Y. Each group of closing members 50 corresponds to each fourth sub-air-cooling channel 45 .

[0202] In some embodiments, the third sub-air-cooling channel 44 and the fourth sub-air-cooling channel 45 may both be provided with a sealing member 50 .

[0203] In some embodiments, with the third direction Z as the projection direction, the projection of the third sub-air-cooling channel 44 may overlap with the projection of the first battery cell group 10, and the projection of the third sub-air-cooling channel 44 may also exceed the projection of the first battery cell group 10. The projection of the first battery cell group 10 may also exceed the projection of the third sub-air-cooling channel 44.

[0204] In some embodiments, with the third direction Z as the projection direction, the projection of the fourth sub-air-cooling channel 45 may overlap with the projection of the second battery cell group 20, and the projection of the fourth sub-air-cooling channel 45 may also exceed the projection of the second battery cell group 20. The projection of the second battery cell group 20 may also exceed the projection of the fourth sub-air-cooling channel 45.

[0205] According to the technical solution of the embodiment of the present application, a portion of the projection of the third sub-air-cooling channel 44 overlaps with the first battery cell group 10 , and a portion of the projection of the fourth sub-air-cooling channel 45 overlaps with the second battery cell group 20 , thereby improving the heat exchange effect and improving the reliability of the battery 1 .

[0206] Please refer to Figures 2 to 5 In some embodiments, the battery 1 further includes a first end cover 70 and a second end cover 71, which are arranged opposite to each other along the first direction X, and the first end cover 70 and the second end cover 71 are respectively connected to the two ends of the second heat exchange member 33 in the first direction X, the first battery cell group 10 is arranged between the first end cover 70 and the first heat exchange member 32, and the second battery cell group 20 is arranged between the second end cover 71 and the second heat exchange member 33.

[0207] In some embodiments, in the first direction X, one end of the second heat exchanger 33 may be connected to the first end cover 70 by welding. The other end of the second heat exchanger 33 may be connected to the second end cover 71 by welding.

[0208] In some embodiments, the first end cover 70 and the second end cover 71 are disposed opposite to each other in the first direction X. The first end cover 70 may be a top wall of the battery 1 , and the second end cover 71 may be a bottom wall of the battery 1 .

[0209] According to the technical solution of the embodiment of the present application, the first end cover 70 is arranged at an end of the first battery cell group 10 away from the second battery cell group 20, and the second end cover 71 is arranged at an end of the second battery cell group 20 away from the first battery cell group 10, thereby reducing the risk of damage to the first battery cell group 10 and the second battery cell group 20 and improving the reliability of the battery 1.

[0210] Please refer to Figures 3 to 5 In some embodiments, the battery 1 further includes a pair of third end covers 72 and a pair of fourth end covers 73. In the first direction X, one end of the third end cover 72 is connected to the first heat exchange member 32, and the other end is connected to the first end cover 70. In the second direction Y, the first battery cell group 10 is disposed between the pair of third end covers 72. In the first direction X, one end of the fourth end cover 73 is connected to the second heat exchange member 33, and the other end is connected to the second end cover 71. In the second direction Y, the second battery cell group 20 is disposed between the pair of third end covers 72. The second direction Y, the first direction X, and the third direction Z are perpendicular to each other.

[0211] In some embodiments, a pair of third end caps 72 may be disposed opposite to each other in the second direction Y, and a pair of fourth end caps 73 may be disposed opposite to each other in the second direction Y.

[0212] In some embodiments, in the third direction Z, one end of the third end cover 72 may be connected to a second heat exchange component 33 , and the other end may be connected to another third heat exchange component 34 .

[0213] In some embodiments, in the third direction Z, one end of the fourth end cover 73 may be connected to a second heat exchange component 33 , and the other end may be connected to another third heat exchange component 34 .

[0214] In some embodiments, the number of the third end caps 72 may be multiple pairs. When the first battery cell group 10 includes multiple first battery cell units 11, the heat exchange assembly 30 includes a third heat exchange member 34, and the third heat exchange member 34 is disposed between two adjacent first battery cell units 11. Taking two first battery cell units 11 as an example, the number of the third end caps 72 is two pairs, and in the third direction Z, one end of one pair of the third end caps 72 is connected to one second heat exchange member 33, and the other end is connected to the third heat exchange member 34. One end of the other pair of the third end caps 72 is connected to the third heat exchange member 34, and the other end is connected to another second heat exchange member 33.

[0215] Similarly, in some embodiments, the number of fourth end covers 73 may be multiple pairs. When the second battery monomer group 20 includes multiple second battery monomer units 21, the heat exchange assembly 30 includes a fourth heat exchange member 35, and the fourth heat exchange member 35 is disposed between two adjacent second battery monomer units 21. Taking two second battery monomer units 21 as an example, the number of fourth end covers 73 is two pairs, and in the third direction Z, one end of one pair of fourth end covers 73 is connected to one second heat exchange member 33, and the other end is connected to the fourth heat exchange member 35. One end of another pair of fourth end covers 73 is connected to the fourth heat exchange member 35, and the other end is connected to another second heat exchange member 33.

[0216] In some embodiments, in the first direction X, one end of the third end cover 72 is connected to the first end cover 70. The third end cover 72 may extend along the first direction X, and one end of the third end cover 72 close to the first end cover 70 may be provided with a flange, which may extend in a direction away from the first battery cell group 10 toward the third end cover 72. The first end cover 70 may also be provided with a flange that matches the flange of the third end cover 72, and the flange of the first end cover 70 matches the flange of the third end cover 72, so as to facilitate the connection between the first end cover 70 and the third end cover 72. The flange of the first end cover 70 and the flange of the third end cover 72 may be connected by welding, and after welding, bolts may be provided to penetrate the flange of the first end cover 70 and the flange of the third end cover 72.

[0217] Similarly, in the first direction X, one end of the fourth end cover 73 is connected to the second end cover 71. The fourth end cover 73 may extend along the first direction X, and one end of the fourth end cover 73 close to the first end cover 70 may be provided with a flange, which may extend in a direction away from the second battery cell group 20 toward the fourth end cover 73. The second end cover 71 may also be provided with a flange matching the flange of the fourth end cover 73, and the flange of the second end cover 71 matches the flange of the fourth end cover 73, so as to facilitate the connection between the second end cover 71 and the fourth end cover 73. The flange of the second end cover 71 and the flange of the fourth end cover 73 may be connected by welding, and after welding, bolts may be provided to penetrate the flange of the second end cover 71 and the flange of the fourth end cover 73.

[0218] In some embodiments, the third end cover 72 and the fourth end cover 73 may jointly form an end plate of the battery 1 in the second direction Y.

[0219] In some embodiments, the first end cap 70, the second end cap 71, the third end cap 72, the fourth end cap 73, and the heat exchange assembly 30 may together form a sealed chamber for accommodating the battery 1 monomer. The sealed chamber is relatively sealed, and may be provided with a channel to connect with the battery 1 monomer circuit.

[0220] The technical solution of the embodiment of the present application is to reduce the risk of damage to the first battery cell group 10 and the second battery cell group 20 by setting the third end cover 72 at both ends of the first battery cell group 10 in the second direction Y and the fourth end cover 73 at both ends of the second battery cell group 20 in the second direction Y, thereby improving the reliability of the battery 1.

[0221] Please refer to Figures 2 to 5 In some embodiments, the battery 1 includes a box body 90, the box body 90 includes a first wall 91 and a second wall 92, the heat exchange assembly 30 includes a first heat exchange member 32 and two second heat exchange members 33, the two second heat exchange members 33 are respectively arranged at both ends of the first heat exchange member 32 in the third direction Z, in the first direction X, the first heat exchange member 32 is arranged between the first battery cell group 10 and the second battery cell group 20; in the third direction Z, the first battery cell group 10 and the second battery cell group 20 are arranged between the two second heat exchange members 33. Among them, the first wall 91 is the first heat exchange member 32, and the second wall 92 is the second heat exchange member 33.

[0222] In some embodiments, the first heat exchange member 32 may be the first wall 91 of the box body 90 , that is, the support beam of the first battery cell group 10 and the second battery cell group 20 .

[0223] In some embodiments, the second heat exchange member 33 may be the second wall 92 of the box body 90 , that is, the second heat exchange member 33 serves as an external end plate of the battery 1 in the third direction Z.

[0224] In some embodiments, the heat exchange assembly 30 may further include a third heat exchange element 34 and a fourth heat exchange element 35 , and the third heat exchange element 34 and the fourth heat exchange element 35 may serve as reinforcement ribs of the box body 90 .

[0225] In some embodiments, the box body 90 may be a part of a battery box, and the battery box may also include a first end cover 70, a second end cover 71, a third end cover 72 and a fourth end cover 73. The first end cover 70, the second end cover 71, the third end cover 72, the fourth end cover 73 and the box body 90 together define a receiving cavity for accommodating a battery cell.

[0226] In some embodiments, the box body 90 may be made of aluminum alloy, which has good structural strength and can be used to accommodate and install battery cells.

[0227] In some embodiments, an air cooling channel 40 is provided on the wall of the box 90 to reduce the mass of the battery 1. In the technical solution of the embodiment of the present application, the first heat exchange member 32 is the first wall 91, the second heat exchange member 33 is the second wall 92, and the heat exchange assembly 30 forms the box 90, thereby improving the capacity density of the battery 1.

[0228] Please refer to Fig. 9 , Fig. 9Schematic diagram of the internal structure of the battery provided for other embodiments of the present application. In order to facilitate the display of the internal structure of the battery, the first end cap, the second end cap, the third end cap and the fourth end cap are hidden. In some embodiments, the battery 1 also includes a heat conductor 80, which is arranged in the heat exchange assembly 30, and part of the heat conductor 80 is in contact with the first battery cell group 10, and the heat exchange assembly 30 exchanges heat with the first battery cell group 10 through the heat conductor 80; and / or, part of the heat conductor 80 is in contact with the second battery cell group 20, and the heat exchange assembly 30 exchanges heat with the second battery cell group 20 through the heat conductor 80.

[0229] In some embodiments, the heat conductive member 80 may be a heat conductive adhesive, a heat conductive metal sheet, etc.

[0230] In some embodiments, the heat conductive member 80 may include multiple parts. The heat exchange assembly 30 may include the first heat exchange member 32 and the second heat exchange member 33 in the above-mentioned embodiment. A portion of the heat conductive member 80 is disposed on the surface of the first heat exchange member 32 facing the first battery monomer group 10, and extends to the surface of the second heat exchange member 33 facing the first battery monomer group 10. Another portion of the heat conductive member 80 may be disposed on the surface of the first heat exchange member 32 facing the second battery monomer group 20, and extends to the surface of the second heat exchange member 33 facing the first battery monomer group 10.

[0231] In some embodiments, the heat conductive member 80 may include multiple parts. The heat exchange assembly 30 may include the first heat exchange member 32, the second heat exchange member 33, the third heat exchange member 34 and the fourth heat exchange member 35 in the above-mentioned embodiment. A portion of the heat conductive member 80 may be disposed on the surface of the first heat exchange member 32 facing the first battery monomer group 10, and extend to the surface of one of the second heat exchange members 33 facing the first battery monomer group 10 and the surface of the third heat exchange member 34 facing the second heat exchange member 33.

[0232] A portion of the heat conductive member 80 may be disposed on a surface of the first heat exchange member 32 facing the first battery cell group 10 , and extend to a surface of another second heat exchange member 33 facing the first battery cell group 10 and a surface of the third heat exchange member 34 facing the second heat exchange member 33 .

[0233] A portion of the heat conductive member 80 may be disposed on a surface of the first heat exchange member 32 facing the second battery cell group 20 and extend to a surface of one of the second heat exchange members 33 facing the second battery cell group 20 and a surface of the fourth heat exchange member 35 facing the second heat exchange member 33 .

[0234] A portion of the heat conductive member 80 may be disposed on a surface of the first heat exchange member 32 facing the second battery cell group 20 and extend to a surface of another second heat exchange member 33 facing the second battery cell group 20 and a surface of the fourth heat exchange member 35 facing the second heat exchange member 33 .

[0235] According to the technical solution of the embodiment of the present application, the heat exchange assembly 30 exchanges heat with the first battery cell group 10 and the second battery cell group 20 through the heat conductive member 80 , thereby improving the heat exchange effect and improving the reliability of the battery 1 .

[0236] Please refer to Figure 2 and Figure 3 In some embodiments, in the first direction X, the first battery cell group 10 includes a plurality of first battery cells 12, the second battery cell group 20 includes a plurality of second battery cells 22, the first battery cell 12 is provided with a first electrode terminal 13 at one end facing away from the second battery cell 22, and the second battery cell 22 is provided with a second electrode terminal 23 at one end facing away from the first battery cell 12.

[0237] In some embodiments, the heat exchange assembly 30 may include the first heat exchange element 32 in the above embodiments, and the first battery cell 12 and the second battery cell 22 may be arranged in a mirror image relative to the first heat exchange element 32 .

[0238] In some embodiments, the first battery cell 12 may be disposed on the first heat exchange element 32 by gluing, bundling, or the like.

[0239] In some embodiments, the second battery cell 22 may be disposed on the first heat exchange element 32 by gluing, bundling, or the like.

[0240] In some embodiments, multiple first electrode terminals 13 can be connected in series or in parallel through other adapters and then electrically connected to the outside world. Multiple second electrode terminals 23 can be connected in series or in parallel through other adapters and then electrically connected to the outside world, thereby realizing the charging and discharging of the battery 1.

[0241] The technical solution of the embodiment of the present application installs the first battery cell group 10 and the second battery cell group 20 through the heat exchange component 30, which saves materials, reduces the weight of the battery 1, and improves the capacity density of the battery 1.

[0242] An embodiment of the present application further provides an electrical device, the electrical device comprising a battery 1 according to any one of the above embodiments, the battery 1 being used to provide electrical energy to the electrical device.

[0243] Please refer to Figures 2 to 8 In some embodiments, the battery 1 includes a first battery cell group 10 and a second battery cell group 20. The first battery cell group 10 and the second battery cell group 20 are stacked along a first direction X. The first battery cell group 10 includes a plurality of first battery cells 12, and the second battery cell group 20 includes a plurality of second battery cells 22. The first battery cell 12 is provided with a first electrode terminal 13 at one end away from the second battery cell 22, and the second battery cell 22 is provided with a second motor terminal at one end away from the first battery cell 12.

[0244] In some embodiments, the battery 1 includes a heat exchange assembly 30, and the heat exchange assembly 30 includes a first heat exchange member 32 and a second heat exchange member 33. The two second heat exchange members 33 are respectively disposed at both ends of the first heat exchange member 32 in the third direction Z. In the first direction X, the first heat exchange member 32 is disposed between the first battery cell group 10 and the second battery cell group 20, and serves as a support plate for the first battery cell group 10 and the second battery cell group 20, thereby forming a first wall 91 of the box 90. In the third direction Z, the first battery cell group 10 and the second battery cell group 20 are disposed between the two second heat exchange members 33, and serve as an external end plate of the battery 1 in the third direction Z, thereby forming a second wall 92 of the box 90.

[0245] In some embodiments, the first heat exchange element 32 is provided with a first sub-air cooling channel 42 , and the second heat exchange element 33 is provided with a second sub-air cooling channel 43 for exchanging heat with the first battery cell group 10 and the second battery cell group 20 .

[0246] In some embodiments, the first sub-air cooling channel 42 and the second sub-air cooling channel 43 both have an opening 41 , and the battery 1 further includes a closure 50 , which can rotate relative to the heat exchange assembly 30 to adjust the opening degree of the opening 41 .

[0247] In the technical solution of the embodiment of the present application, the first battery cell group 10 and the second battery cell group 20 share the first heat exchange member 32 as the mounting plate, saving some mounting components and simplifying the mounting structure of the battery 1. The battery 1 is heat exchanged through the air cooling channel 40 to improve the reliability of the battery 1. At the same time, a sealing member 50 is provided to adjust the opening 41 of the air cooling channel 40 to improve the convenience of temperature control of the battery 1.

[0248] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, characterized in that: include: A first battery cell group and a second battery cell group, wherein the first battery cell group and the second battery cell group are stacked along a first direction; A heat exchange component, at least a portion of which is disposed between the first battery cell group and the second battery cell group, the heat exchange component being connected to the first battery cell group by air cooling; and / or the heat exchange component being connected to the second battery cell group by air cooling.

2. The battery according to claim 1, characterized in that The heat exchange component has an air cooling channel, and the heat exchange component exchanges heat with the first battery monomer group through the air cooling channel; and / or the heat exchange component exchanges heat with the second battery monomer group through the air cooling channel.

3. The battery according to claim 2, characterized in that The air-cooling channel extends along a second direction, and openings are provided at both ends of the air-cooling channel. The air-cooling channel is connected to the outside through the openings, wherein the second direction is perpendicular to the first direction.

4. The battery according to claim 3, characterized in that The heat exchange assembly further includes a blower mechanism, which is disposed at one end of the air-cooling flow channel and is configured to blow air toward the air-cooling flow channel through the opening.

5. The battery according to claim 3, characterized in that The battery further includes a closure member disposed at the opening, wherein the closure member is configured to close at least a portion of the opening.

6. The battery according to claim 5, characterized in that One end of the closure member is rotatably connected to the heat exchange component, and the closure member is configured to be rotatable relative to the heat exchange component to change the opening degree of the opening.

7. The battery according to claim 6, characterized in that The battery further comprises a driving member, which is connected to the closing member and is used to drive the closing member to rotate relative to the heat exchange component.

8. The battery according to claim 2, characterized in that The heat exchange assembly includes a first heat exchange element and two second heat exchange elements, wherein the two second heat exchange elements are respectively arranged at two ends of the first heat exchange element in a third direction, wherein in the first direction, the first heat exchange element is arranged between the first battery cell group and the second battery cell group, and in the third direction, the first battery cell group and the second battery cell group are arranged between the two second heat exchange elements, wherein the first direction is perpendicular to the third direction.

9. The battery according to claim 8, characterized in that The air-cooling channel includes a first sub-air-cooling channel, which is arranged on the first heat exchange component. In the first direction, at least part of the projection of the first sub-air-cooling channel overlaps with the first battery cell group, and at least part of the projection of the first sub-air-cooling channel overlaps with the second battery cell group.

10. The battery according to claim 8, characterized in that The air-cooling channel includes a second sub-air-cooling channel, which is arranged on the second heat exchange member. In the third direction, a portion of the projection of the second sub-air-cooling channel overlaps with the first battery cell group, and a portion of the projection of the second sub-air-cooling channel overlaps with the second battery cell group.

11. The battery according to claim 8, characterized in that The first heat exchange element has a first surface and a second surface arranged opposite to each other in the first direction, and the heat exchange assembly further comprises a third heat exchange element and a fourth heat exchange element, wherein the third heat exchange element is arranged on the first surface, and the fourth heat exchange element is arranged on the second surface; The first battery cell group includes a plurality of first battery cell units, and the third heat exchange element is located between two adjacent first battery cell units; the second battery cell group includes a plurality of second battery cell units, and the fourth heat exchange element is located between two adjacent second battery cell units.

12. The battery according to claim 11, characterized in that The air-cooling channel also includes a third sub-air-cooling channel, which is arranged on the third heat exchange element, and in the third direction, at least a portion of the projection of the third sub-air-cooling channel overlaps with the first battery cell group; and / or, the air-cooling channel also includes a fourth sub-air-cooling channel, which is arranged on the fourth heat exchange element, and in the third direction, at least a portion of the projection of the fourth sub-air-cooling channel overlaps with the second battery cell group.

13. The battery according to claim 8, characterized in that The battery also includes a first end cover and a second end cover, the first end cover and the second end cover are arranged opposite to each other along the first direction, the first end cover and the second end cover are respectively connected to the two ends of the second heat exchange member in the first direction, the first battery cell group is arranged between the first end cover and the first heat exchange member, and the second battery cell group is arranged between the second end cover and the second heat exchange member.

14. The battery according to claim 13, characterized in that The battery further includes a pair of third end covers and a pair of fourth end covers, wherein in the first direction, one end of the third end cover is connected to the first heat exchange member, and the other end is connected to the first end cover, and in the second direction, the first battery cell group is disposed between the pair of third end covers; In the first direction, one end of the fourth end cover is connected to the second heat exchange member, and the other end is connected to the second end cover, and in the second direction, the second battery cell group is arranged between the pair of third end covers; The second direction, the first direction and the third direction are perpendicular to each other.

15. The battery according to claim 8, characterized in that The battery includes a box body, the box body includes a first wall and two second walls, the two second walls are respectively arranged at two ends of the first wall in the third direction, in the first direction, the first wall is arranged between the first battery monomer group and the second battery monomer group, in the third direction, the first battery monomer group and the second battery monomer group are arranged between the two second walls; Wherein, the first wall is the first heat exchange component, and the second wall is the second heat exchange component.

16. The battery according to claim 1, characterized in that The battery also includes a heat conductor, which is arranged in the heat exchange assembly, part of which is in contact with the first battery cell group, and the heat exchange assembly exchanges heat with the first battery cell group through the heat conductor; and / or part of which is in contact with the second battery cell group, and the heat exchange assembly exchanges heat with the second battery cell group through the heat conductor.

17. The battery according to claim 1, characterized in that In the first direction, the first battery cell group includes a plurality of first battery cells, the second battery cell group includes a plurality of second battery cells, the first battery cells are provided with a first electrode terminal at one end away from the second battery cells, and the second battery cells are provided with a second electrode terminal at one end away from the first battery cells.

18. An electrical equipment, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 17, wherein the battery is used to provide electrical energy to the electrical device.

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