Battery case, battery, electric device, method and apparatus for manufacturing battery

Abstract

Embodiments of the present application provide a battery box (11), a battery (10), a power consumption device, a method (300) and an apparatus (400) for manufacturing a battery. The battery box (11) comprises: a cooling component (13), wherein a liquid collecting structure (130) is arranged on the cooling component (13), and the liquid collecting structure (130) is used for collecting condensate generated by the cooling component (13); and a first wall (110), wherein a liquid storage structure (115) is arranged on the first wall (110), the liquid storage structure (115) is arranged correspondingly to the liquid collecting structure (130), and the liquid storage structure (115) is used for collecting the condensate collected by the liquid collecting structure (130). The technical solution of the embodiments of the present application can enhance the safety of the battery (10).

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery housing, battery, electrical device, method and apparatus for manufacturing a battery. Background Technology

[0002] With increasing environmental pollution, the new energy industry is attracting more and more attention. Within the new energy industry, battery technology is a crucial factor in its development.

[0003] Safety is a crucial issue in the development of battery technology. If battery safety cannot be guaranteed, then the battery cannot be used.

[0004] In high-temperature and high-humidity environments, condensation can easily form inside the battery casing, posing a safety hazard and affecting battery safety. Therefore, enhancing battery safety is a pressing technical problem that needs to be solved in battery technology. Summary of the Invention

[0005] This application provides a battery casing, a battery, an electrical device, a method for manufacturing a battery, and an apparatus that can enhance battery safety.

[0006] In a first aspect, a battery casing is provided, comprising: a cooling component having a liquid collection structure thereon for collecting condensate generated by the cooling component; and a first wall having a liquid storage structure thereon, the liquid storage structure being correspondingly disposed to the liquid collection structure for collecting the condensate collected by the liquid collection structure.

[0007] In the embodiments proposed in this application, a liquid collecting structure is provided on the cooling component to collect the condensate generated by the cooling component. Simultaneously, a liquid storage structure corresponding to the liquid collecting structure is provided on the first wall of the housing to collect the condensate collected by the liquid collecting structure. This keeps the condensate away from the electrical connection areas inside the housing, thus enhancing battery safety.

[0008] In one possible implementation, the cooling components can be integrated into the top cover of the housing to reduce the space occupied.

[0009] In one possible implementation, the cooling component protrudes from the liquid storage structure at a location corresponding to the liquid storage structure to form the liquid collection structure. The protruding area has a greater curvature than other planar areas of the cooling component, making it easier for condensate to accumulate, thus allowing the condensate to be collected in that area.

[0010] In one possible implementation, the liquid collection structure is a pointed protrusion or an arc-shaped protrusion. Both pointed and arc-shaped protrusions have a large curvature, which allows them to collect condensate.

[0011] In one possible implementation, the cooling component includes a connecting region, a transition region, and a main body region. The connecting region connects to the first wall and is located on a different plane from the main body region. The transition region connects the connecting region and the main body region to form two corner structures. The corner structure closer to the liquid storage structure forms the liquid collection structure. The corner structure has a greater curvature than other planar areas of the cooling component, making it easier for condensate to accumulate at the corner structure.

[0012] In one possible implementation, the plane where the connecting region is located is closer to the liquid storage structure than the plane where the main body region is located, and the corner structure formed by the transition region connecting the connecting region forms the liquid collection structure. In this case, condensate at the corner structure farther from the liquid storage structure can also flow along the transition region to the corner structure closer to the liquid storage structure, i.e., the liquid collection structure. Therefore, with the above arrangement, more condensate will accumulate in the liquid collection structure and then enter the liquid storage structure.

[0013] In one possible implementation, the first wall includes a plurality of sub-walls connected to form a cavity of the liquid storage structure, the opening of which corresponds to the liquid collection structure. At the location corresponding to the liquid collection structure, the cavity has an opening, forming a liquid storage structure, thereby allowing condensate collected in the liquid collection structure to enter the liquid storage structure through the opening.

[0014] In one possible implementation, the opening is positioned in the direction of gravity of the liquid collection structure. This allows the condensate collected in the liquid collection structure to drip through the opening into the liquid storage structure.

[0015] In one possible implementation, the liquid storage structure is isolated from the electrical cavity of the housing, which is used to house individual battery cells. Isolating the liquid storage structure from the electrical cavity prevents condensate from entering the electrical cavity and contacting the electrical connections within it.

[0016] In one possible implementation, the liquid storage structure includes a moisture-absorbing structure for adsorbing the condensate. By adsorbing the condensate through the moisture-absorbing structure, the diffusion of the condensate can be prevented, reducing safety hazards.

[0017] In one possible implementation, a flow-guiding structure is provided within the first wall to drain the condensate from the housing. This flow-guiding structure allows the condensate to drain from the housing, reducing safety hazards and thus ensuring battery safety.

[0018] In a second aspect, a battery is provided, comprising: a battery cell; and a housing from the first aspect, wherein the battery cell is housed within the housing.

[0019] Thirdly, an electrical device is provided, comprising: a battery of the second aspect, said battery being used to provide electrical energy.

[0020] Fourthly, a method for manufacturing a battery is provided, comprising: providing a battery cell; providing a housing, the housing comprising: a cooling component having a liquid collection structure thereon for collecting condensate generated by the cooling component; a first wall having a liquid storage structure thereon, the liquid storage structure corresponding to the liquid collection structure for collecting the condensate collected by the liquid collection structure; and housing the battery cell within the housing.

[0021] Fifthly, an apparatus for manufacturing a battery is provided, comprising a module for performing the method described in the fourth aspect.

[0022] The technical solution of this application embodiment includes a liquid collecting structure on the cooling component to collect the condensate generated by the cooling component. Simultaneously, a corresponding liquid storage structure is provided on the first wall of the housing to collect the condensate collected by the liquid collecting structure. This keeps the condensate away from the electrical connection areas inside the housing, thus enhancing battery safety. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of a vehicle according to an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of a battery according to an embodiment of this application;

[0026] Figure 3 This is a schematic diagram of a battery according to an embodiment of this application;

[0027] Figure 4 This is a schematic diagram of a battery cell according to an embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the battery casing according to an embodiment of this application;

[0029] Figure 6This is a schematic diagram of the battery casing according to an embodiment of this application;

[0030] Figure 7 This is a schematic diagram of the battery casing according to an embodiment of this application;

[0031] Figure 8 This is a schematic diagram of a battery according to an embodiment of this application;

[0032] Figure 9 This is a schematic flowchart of a method for preparing a battery according to an embodiment of this application;

[0033] Figure 10 This is a schematic block diagram of an apparatus for preparing a battery according to an embodiment of this application.

[0034] The accompanying drawings are not drawn to scale. Detailed Implementation

[0035] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0036] In the description of this application, it should be noted that, unless otherwise stated, all technical and scientific terms used have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion; "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range.

[0037] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0038] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0040] In this application, the battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited to these. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited to these. Battery cells are generally divided into three types according to their packaging method: cylindrical battery cells, cuboid / square battery cells, and pouch battery cells, and the embodiments of this application are not limited to these.

[0041] The battery mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery pack, etc. A battery generally includes a housing for encapsulating one or more battery cells. The housing can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0042] A battery cell includes an electrode assembly and an electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrodes. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, and the uncoated current collector protrudes beyond the coated current collector, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, and the uncoated current collector protrudes beyond the coated current collector, serving as the negative electrode tab. The negative current collector can be made of copper, and the negative active material can be carbon or silicon, etc. To ensure that a large current can pass through without melting, multiple positive electrode tabs are stacked together, and multiple negative electrode tabs are stacked together. The separator can be made of polypropylene (PP) or polyethylene (PE), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0043] To meet diverse power demands, a battery can comprise multiple individual battery cells, which can be connected in series, parallel, or a combination of both. Optionally, multiple battery cells can first be connected in series, parallel, or a combination to form a battery module, and then these battery modules can be connected in series, parallel, or a combination to form a battery. In other words, multiple battery cells can directly form a battery, or they can first be assembled into battery modules, and then the battery modules can be assembled into a battery. The battery is then further installed in electrical equipment to provide power to that equipment.

[0044] The development of battery technology must take into account multiple design factors, such as energy density, cycle life, discharge capacity, charge / discharge rate and other performance parameters. In addition, battery safety also needs to be considered.

[0045] For individual battery cells, the main safety hazards come from the charging and discharging processes, as well as appropriate temperature design. To control the temperature of individual battery cells, a cooling system can be installed inside the battery. The cooling system contains a cooling medium to lower the temperature of the battery cells. The cooling system can also be called a cooling component or cooling plate, and the cooling medium can be called a cooling fluid, more specifically, a coolant or cooling gas. The cooling fluid circulates to achieve better temperature regulation. Optionally, the cooling medium can be water, a mixture of water and ethylene glycol, or air. When the cooling medium is water, the cooling system can also be called a water-cooled plate.

[0046] In high-temperature and high-humidity environments, batteries are prone to condensation inside their casings, posing a safety hazard and affecting battery safety. Specifically, when the high-temperature and high-humidity gases inside the battery encounter cooling components within the casing, condensation is produced. If this condensation drips onto the electrical connection areas inside the battery, it may compromise battery safety.

[0047] In view of this, this application provides a technical solution in which a liquid collecting structure is provided on the cooling component to collect the condensate generated by the cooling component. Simultaneously, a liquid storage structure corresponding to the liquid collecting structure is provided on the wall of the battery casing to collect the condensate collected by the liquid collecting structure. This keeps the condensate away from the electrical connection areas of the battery, thus enhancing battery safety.

[0048] In addition to the battery cells and cooling components mentioned above, the battery housing may also include a busbar and other battery components. In some embodiments, the housing may also include a structure for securing the battery cells. The shape of the housing can be determined based on the number of battery cells it accommodates. In some embodiments, the housing may be square and have six walls. Optionally, the bottom and top walls of the housing may integrate cooling components to cool the battery cells at the bottom and top of the housing, respectively. The side walls of the housing are provided with beams, each beam comprising multiple sub-walls forming a hollow beam structure, i.e., the beam has cavities inside. Optionally, in addition to the bottom and top of the housing, cooling components may also be provided in the middle of the housing to further enhance the cooling effect.

[0049] In this embodiment, the liquid collection structure can be disposed on the cooling component at the top of the housing, for example, a cooling component integrated into the top wall / cover of the housing. The liquid storage structure can be disposed in the beam of the housing. In this way, the liquid collection structure can collect the condensate generated by the cooling component above the liquid storage structure in the beam, thereby collecting the condensate in the liquid storage structure and keeping it away from the electrical connection areas inside the battery, such as the busbar components.

[0050] A busbar is used to achieve electrical connection between multiple battery cells, such as in parallel, series, or a combination thereof. The busbar connects battery cells by connecting their electrode terminals. In some embodiments, the busbar can be fixed to the electrode terminals of the battery cells by welding. The busbar transmits the voltage of the battery cells; when multiple battery cells are connected in series, a higher voltage is obtained. Accordingly, the electrical connection formed by the busbar can also be called a "high-voltage connection."

[0051] In addition to the busbar component, sensors can also be installed within the battery to sense the state of individual battery cells, such as temperature and state of charge. In this embodiment, the electrical connection area within the battery may include the electrical connection area formed by the busbar component and / or the electrical connection area within the sensor.

[0052] The busbar and sensor can be encapsulated in an insulating layer to form a signal transmission assembly. Accordingly, the signal transmission assembly can be used to transmit the voltage and / or sensing signals of the battery cells. The signal transmission assembly does not have an insulating layer at the connection point with the electrode terminals of the battery cells; that is, the insulating layer has openings at this point for connection with the electrode terminals of the battery cells.

[0053] The battery casing can also be equipped with a pressure balancing mechanism to balance the pressure inside and outside the casing. For example, when the pressure inside the casing is higher than that outside, gas inside the casing can flow to the outside through the pressure balancing mechanism; when the pressure inside the casing is lower than that outside, gas outside the casing can flow into the inside through the pressure balancing mechanism. Optionally, the pressure balancing mechanism can be a pressure relief mechanism for the casing, which is actuated to release the internal pressure when the internal pressure of the casing reaches a threshold.

[0054] It should be understood that the various components in the battery casing described above should not be construed as limiting the embodiments of this application. That is, the battery casing of the embodiments of this application may or may not include the above-described components.

[0055] The technical solutions described in the embodiments of this application are applicable to various battery-powered devices, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, electric vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0056] It should be understood that the technical solutions described in the embodiments of this application are not limited to the devices described above, but can also be applied to all devices that use batteries. However, for the sake of brevity, the following embodiments are all illustrated using electric vehicles as examples.

[0057] For example, such as Figure 1 The diagram shown is a structural schematic of a vehicle 1 according to one embodiment of this application. Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A motor 40, a controller 30, and a battery 10 can be installed inside vehicle 1. The controller 30 controls the battery 10 to supply power to the motor 40. For example, the battery 10 can be installed at the bottom, front, or rear of vehicle 1. The battery 10 can be used to power vehicle 1; for example, it can serve as the operating power source for the vehicle 1's electrical system, such as for the power requirements of starting, navigation, and operation. In another embodiment of this application, the battery 10 can not only serve as the operating power source for vehicle 1 but also as the driving power source, replacing or partially replacing gasoline or natural gas to provide driving power to vehicle 1.

[0058] To meet different power demands, battery 10 may include multiple individual battery cells. For example, Figure 2 The diagram shown is a structural schematic of a battery 10 according to an embodiment of this application. The battery 10 may include multiple battery cells 20. The battery 10 may also include a housing 11, which has a hollow interior structure, and the multiple battery cells 10 are housed within the housing 11. Figure 2 As shown, the housing 11 may include two parts, referred to here as the first part 111 (upper housing) and the second part 112 (lower housing), which are fastened together. The shapes of the first part 111 and the second part 112 can be determined according to the shape of the combination of multiple battery cells 20. Both the first part 111 and the second part 112 may have an opening. For example, both the first part 111 and the second part 112 can be hollow cuboids with only one side as an opening. The openings of the first part 111 and the second part 112 are arranged opposite to each other, and the first part 111 and the second part 112 are fastened together to form a housing 11 with a closed cavity. Multiple battery cells 20 are connected in parallel, series, or mixed configurations and placed inside the housing 11 formed by the fastening of the first part 111 and the second part 112.

[0059] Optionally, the battery 10 may also include other structures, which will not be described in detail here. For example, the battery 10 may also include a busbar component for realizing the electrical connection between multiple battery cells 20, such as parallel, series, or mixed connection. Specifically, the busbar component can realize the electrical connection between battery cells 20 by connecting the electrode terminals of the battery cells 20. Further, the busbar component can be fixed to the electrode terminals of the battery cells 20 by welding. The electrical energy of the multiple battery cells 20 can be further led out through the housing 11 via a conductive mechanism. Optionally, the conductive mechanism may also be part of the busbar component.

[0060] The number of battery cells 20 can be set to any value depending on different power requirements. Multiple battery cells 20 can be connected in series, parallel, or a combination thereof to achieve a larger capacity or power. Since each battery 10 may contain a large number of battery cells 20, for ease of installation, the battery cells 20 can be grouped, with each group of battery cells 20 forming a battery module. The number of battery cells 20 included in a battery module is unlimited and can be set according to requirements. A battery can include multiple battery modules, which can be connected in series, parallel, or a combination thereof.

[0061] Optionally, such as Figure 3As shown, the first part 111 of the housing 11 can be a flat top cover without openings, i.e., the first part 111 is a flat top cover. This top cover can integrate cooling components to cool the battery cells 20 at the top of the housing 11. The second part 112 of the housing 11 is a cavity with openings, including a bottom wall and side walls. The bottom wall can integrate cooling components to cool the battery cells 20 at the bottom of the housing 11. The side walls can be provided with beams, each beam comprising multiple sub-walls forming a hollow beam structure, i.e., the beam has an internal cavity.

[0062] Alternatively, in addition to the bottom and top of the housing 11, a cooling component can also be provided in the middle of the housing 11. For example, a cooling component can also be provided between the upper and lower rows of battery cells 20 to further enhance the cooling effect.

[0063] Optionally, the wall of the battery cell 20 with electrode terminals inside the housing 11 can be perpendicular to the bottom wall of the housing 11. That is, the battery cell 20 can be placed horizontally ("lying flat"). In this way, a cooling component can be provided between every two rows of battery cells 20 in the direction perpendicular to the bottom wall of the housing 11, and correspondingly, cooling components are provided on both sides of each battery cell 20. Optionally, the side wall with the largest area of ​​each battery cell 20 is connected to the cooling component, thereby achieving maximum cooling of the battery cell 20.

[0064] like Figure 4 The diagram shown is a structural schematic of a battery cell 20 according to an embodiment of this application. The battery cell 20 includes one or more electrode assemblies 22, a housing 211, and a cover plate 212. The housing 211 and the cover plate 212 form an outer shell or battery box 21. The walls of the housing 211 and the cover plate 212 are both referred to as the walls of the battery cell 20. For a cuboid battery cell 20, the walls of the housing 211 include a bottom wall and four side walls. The shape of the housing 211 depends on the shape of the combined one or more electrode assemblies 22. For example, the housing 211 can be a hollow cuboid, cube, or cylinder, and one side of the housing 211 has an opening so that one or more electrode assemblies 22 can be placed inside the housing 211. For example, when the housing 211 is a hollow cuboid or cube, one plane of the housing 211 is an open surface, that is, this plane does not have a wall, allowing communication between the inside and outside of the housing 211. When the housing 211 can be a hollow cylinder, the end face of the housing 211 is an open face, that is, the end face does not have a wall, so that the inside and outside of the housing 211 are connected. The cover plate 212 covers the opening and is connected to the housing 211 to form a closed cavity for placing the electrode assembly 22. The housing 211 is filled with an electrolyte, such as an electrolyte solution.

[0065] The battery cell 20 may also include two electrode terminals 214, which can be disposed on a cover plate 212. The cover plate 212 is typically flat, and the two electrode terminals 214 are fixed to the flat surface of the cover plate 212. The two electrode terminals 214 are a positive electrode terminal 214a and a negative electrode terminal 214b, respectively. Each electrode terminal 214 is provided with a corresponding connecting member 23, or a current collector 23, which is located between the cover plate 212 and the electrode assembly 22, and is used to electrically connect the electrode assembly 22 and the electrode terminal 214.

[0066] like Figure 4 As shown, each electrode assembly 22 has a first tab 221a and a second tab 222a. The first tab 221a and the second tab 222a have opposite polarities. For example, when the first tab 221a is a positive tab, the second tab 222a is a negative tab. The first tab 221a of one or more electrode assemblies 22 is connected to an electrode terminal via a connecting member 23, and the second tab 222a of one or more electrode assemblies 22 is connected to another electrode terminal via another connecting member 23. For example, the positive electrode terminal 214a is connected to the positive tab via a connecting member 23, and the negative electrode terminal 214b is connected to the negative tab via another connecting member 23.

[0067] In this battery cell 20, depending on actual usage requirements, the electrode assembly 22 can be configured as a single unit or multiple units, such as... Figure 4 As shown, the battery cell 20 contains four independent electrode assemblies 22.

[0068] A pressure relief mechanism 213 may also be provided on the battery cell 20. The pressure relief mechanism 213 is actuated to release the internal pressure or temperature when the internal pressure or temperature of the battery cell 20 reaches a threshold.

[0069] The pressure relief mechanism 213 can be any possible pressure relief structure, and the embodiments of this application are not limited to this. For example, the pressure relief mechanism 213 can be a temperature-sensitive pressure relief mechanism, which is configured to melt when the internal temperature of the battery cell 20 with the pressure relief mechanism 213 reaches a threshold; and / or, the pressure relief mechanism 213 can be a pressure-sensitive pressure relief mechanism, which is configured to rupture when the internal gas pressure of the battery cell 20 with the pressure relief mechanism 213 reaches a threshold.

[0070] Figure 5 A schematic diagram of the battery casing 11 according to one embodiment of this application is shown. Figure 5 As shown, the housing 11 may include a cooling component 13 and a first wall 110.

[0071] The cooling component 13 is used to contain the cooling medium to reduce the temperature of the battery cell 20. The cooling medium can be circulated to achieve better temperature regulation. Optionally, the cooling medium can be water, a mixture of water and ethylene glycol, or air, etc., and this embodiment is not limited thereto.

[0072] A liquid collecting structure 130 is provided on the cooling component 13 to collect the condensate generated by the cooling component 13. The battery 10 is a high-temperature and high-humidity environment. When the high-temperature and high-humidity gases inside the battery 10 encounter the cooling component 13, condensate is generated. In this embodiment, the liquid collecting structure 130 is provided on the cooling component 13 so that the condensate collects in the liquid collecting structure 130. Optionally, the liquid collecting structure 130 can be a structure with a large curvature, such as a sharp structure. This makes it easier for the liquid collecting structure 130 with a larger curvature to collect condensate compared to other planar areas of the cooling component 13, thereby allowing the condensate to be collected at a specific location.

[0073] A liquid storage structure 115 is provided on the first wall 110, corresponding to the liquid collection structure 130. The liquid storage structure 115 is used to collect the condensate collected in the liquid collection structure 130. The liquid storage structure 115 can be located at the position where the condensate collected in the liquid collection structure 130 drips, for example, the liquid storage structure 115 can be located in the direction of gravity of the liquid collection structure 130. In this way, the condensate collected in the liquid collection structure 130 can drip into the liquid storage structure 115, thereby realizing the collection of condensate generated by the cooling component 13.

[0074] In this embodiment, a liquid collecting structure 130 is provided on the cooling component 13 to collect the condensate generated by the cooling component 13. Simultaneously, a liquid storage structure 115 corresponding to the liquid collecting structure 130 is provided on the first wall 110 of the housing 11 to collect the condensate collected by the liquid collecting structure 130. This keeps the condensate away from the electrical connection areas within the housing 11, thus enhancing the safety of the battery 10.

[0075] The technical solution of this application embodiment can be applied to a battery 10 having a cooling component 13. Optionally, in one embodiment of this application, the cooling component 13 can be disposed on the top of the housing 11. For example, the cooling component 13 can be integrated into the top cover of the housing 11 to reduce the space occupied. The first wall 110 can be the side wall of the housing 11. Correspondingly, the liquid collection structure 130 can be disposed at the end of the cooling component 13, that is, in the area near the first wall 110, so that the condensate can be condensed at the end of the cooling component 13 and collected in the liquid storage structure 115 in the side wall of the housing 11, away from the electrical connection area in the housing 11.

[0076] Alternatively, in one embodiment of this application, the cooling component 13 may not be integrated with the top cover of the housing 11. For example... Figure 6 As shown, the cooling component 13 is disposed on the top of the housing 11 and attached to the surface of the battery cell 20. The top cover 111 of the housing 11 covers the cooling component 13, thus protecting the cooling component 13.

[0077] Optionally, in one embodiment of this application, the cooling component 13 may include a connecting region 131, a transition region 132, and a main body region 133. The connecting region 131 is used to connect the first wall 110, and the connecting region 131 and the main body region 133 are on different planes. The transition region 132 connects the connecting region 131 and the main body region 133 to form two corner structures. The corner structure closer to the liquid storage structure 115 forms a liquid collection structure 130.

[0078] For example, the region of the cooling component 13 near the first wall 110 bends towards the first wall 110, forming a connecting region 131 and a transition region 132 connecting the connecting region 131 and the main body region 133. Two corner structures are formed at the connection points of the connecting region 131 and the transition region 132, and at the connection points of the transition region 132 and the main body region 133. The corner structure near the first wall 110 forms a liquid collection structure 130. The corner structure has a greater curvature than other planar regions of the cooling component 13, making it easier for condensate to accumulate, thus allowing condensate to be collected at the corner structure.

[0079] Optionally, in one embodiment of this application, the plane where the connecting region 131 is located is closer to the liquid storage structure 115 than the plane where the main body region 133 is located. For example, the connecting region 131 is closer to the bottom wall of the housing 11, i.e., lower, than the main body region 133. The corner structure formed by the transition region 132 connecting the connecting region 131 forms the liquid collection structure 130. In this case, the condensate at the upper corner structure can also flow along the transition region 132 to the lower corner structure, i.e., the liquid collection structure 130. That is, with the above arrangement, more condensate will accumulate in the liquid collection structure 130 and then enter the liquid storage structure 115.

[0080] Optionally, in one embodiment of this application, such as Figure 7As shown, the cooling component 13 protrudes from the liquid storage structure 115 at a position corresponding to the liquid storage structure 115 to form a liquid collection structure 130. The protruding area has a greater curvature than other planar areas of the cooling component 13, making it easier for condensate to accumulate in this area. In the aforementioned embodiment, the cooling component 13 bends towards the first wall 110 to ultimately form the liquid collection structure 130. In this embodiment, the cooling component 13 does not bend, but instead protrudes from the liquid storage structure 115 near the first wall 110 to form the liquid collection structure 130 corresponding to the liquid storage structure 115. This method avoids bending the cooling component 13, reducing process complexity.

[0081] Optionally, the liquid collecting structure 130 can be a pointed protrusion, i.e., a pointed tip, or an arc-shaped protrusion, i.e., a convex bulge. Both pointed and arc-shaped protrusions have a large curvature, which allows them to collect condensate.

[0082] It should be understood that the liquid collection structure 130 can also adopt other structures with larger curvatures, and the embodiments of this application are not limited to this.

[0083] Optionally, in one embodiment of this application, the liquid storage structure 115 is isolated from the electrical cavity 117 of the housing 11. The electrical cavity 117 is a cavity within the housing 11 used to accommodate the battery cell 20. Isolating the liquid storage structure 115 from the electrical cavity 117 can prevent condensate from entering the electrical cavity 117 and contacting the electrical connections within the electrical cavity 117.

[0084] Optionally, in one embodiment of this application, the first wall 110 includes a plurality of sub-walls, which are connected to form a cavity of the liquid storage structure 115, and the opening 116 of the cavity corresponds to the liquid collection structure 130. For example... Figure 5-7 As shown, the multiple sub-walls of the first wall 110 form a hollow beam structure, meaning the beam has an internal cavity. This ensures the strength of the housing 11 while reducing its weight, and also allows for the installation of other components within the beam to meet specific needs. In this embodiment, at the position corresponding to the liquid collection structure 130, the cavity has an opening 116, forming a liquid storage structure 115, allowing the condensate collected in the liquid collection structure 130 to enter the liquid storage structure 115 through the opening 116.

[0085] Optionally, in one embodiment of this application, the opening 116 is disposed in the direction of gravity of the liquid collection structure 130. In this way, the condensate collected in the liquid collection structure 130 can drip into the liquid storage structure 115 through the opening 116.

[0086] Optionally, in one embodiment of this application, a moisture-absorbing structure may be provided within the liquid storage structure 115 to absorb condensate. By absorbing condensate through the moisture-absorbing structure, the diffusion of condensate can be prevented, reducing safety hazards.

[0087] Optionally, in one embodiment of this application, a flow guiding structure may be provided within the first wall 110 for discharging condensate from the housing 11. Specifically, a flow channel may be provided within the first wall 110, which connects to the liquid storage structure 115 for draining condensate away.

[0088] For example, a one-way gravity valve can be connected to the other end of the flow channel. The one-way gravity valve is used to discharge the condensate in the flow channel from the box 11 when the gravity of the condensate in the flow channel reaches a threshold.

[0089] The one-way gravity valve opens when the weight of the liquid in the flow channel reaches a threshold, discharging the liquid downwards, while preventing external gas from entering in the reverse direction. Optionally, the flow channel can be set to a longer length in the direction of gravity to match the gravity required for the one-way gravity valve to open.

[0090] Alternatively, the other end of the flow channel may not be connected to a one-way gravity valve, but may be directly connected to the outside of the housing 11, for example, through a through hole on the first wall 110.

[0091] Optionally, in one embodiment of this application, the bottom of the liquid storage structure 115 can be configured as an arc shape to facilitate the guidance of condensate into the flow channel. For example, the liquid storage structure 115 can adopt an arc-shaped structure that is wider at the top and narrower at the bottom. The larger opening 116 at the top facilitates the collection of condensate, while the narrower design at the bottom makes it easier to guide the condensate into the flow channel.

[0092] Optionally, in one embodiment of this application, the bottom of the liquid storage structure 115 may also be directly connected to a one-way gravity valve. In this case, the bottom of the liquid storage structure 115 may extend to the bottom of the tank 11, and the one-way gravity valve is located at the bottom of the tank 11.

[0093] The condensate can be discharged from the housing 11 by means of a flow guiding structure, such as a flow channel and / or a one-way gravity valve, reducing safety hazards and thus ensuring the safety of the battery 10.

[0094] This application embodiment also provides a battery 10, which may include a battery cell 20 and a housing 11 described in the foregoing embodiments, wherein the battery cell 20 is housed within the housing 11.

[0095] Optionally, the battery 10 may also include other components, such as a busbar, a sensor, etc., which are not limited in this application embodiment.

[0096] Figure 8 This is a schematic diagram of a battery 10 according to one embodiment of this application. Figure 8 As shown, the battery 10 may include a housing 11 and multiple battery cells 20.

[0097] The housing 11 can be the housing 11 described in the foregoing embodiments. For example, the housing 11 includes a cooling component 13, on which a liquid collecting structure 130 is provided. The liquid collecting structure 130 is used to collect the condensate generated by the cooling component 13. A liquid storage structure 115 is provided on the first wall 110 of the housing 11. The liquid storage structure 115 is correspondingly provided with the liquid collecting structure 130, and the liquid storage structure 115 is used to collect the condensate collected by the liquid collecting structure 130.

[0098] The battery cell 20 can be the battery cell 20 described in the foregoing embodiments. For example, the battery cell 20 can be... Figure 4 The battery cell in the middle is 20.

[0099] The battery 10 may also include a busbar for electrically connecting multiple battery cells 20. The battery 10 may also include sensors for sensing the state of the battery cells 20.

[0100] Optionally, the wall of the battery cell 20 with electrode terminals can be perpendicular to the bottom wall of the housing 11. That is, the battery cell 20 can be placed horizontally ("lying flat"). Optionally, a cooling component is connected to the side wall of the battery cell 20 with the largest area, thereby achieving maximum cooling of the battery cell 20.

[0101] For a detailed description of each component in battery 10, please refer to the foregoing embodiments. For the sake of brevity, it will not be repeated here.

[0102] One embodiment of this application also provides an electrical device that may include the battery 10 from the foregoing embodiments, the battery 10 being used to provide electrical energy to the electrical device. Optionally, the electrical device may be a vehicle 1, a ship, or a spacecraft.

[0103] The foregoing described the battery housing 11, battery 10, and electrical device of the embodiments of this application. The following will describe the method and apparatus for preparing the battery of the embodiments of this application, wherein parts not described in detail can be referred to the foregoing embodiments.

[0104] Figure 9 A schematic flowchart of a method 300 for preparing a battery according to an embodiment of this application is shown. Figure 9 As shown, the method 300 may include:

[0105] 310, providing 20 battery cells;

[0106] 320, provides enclosure 11, enclosure 11 includes:

[0107] Cooling component 13, a liquid collection structure 130 is provided on the cooling component 13, the liquid collection structure 130 is used to collect the condensate generated by the cooling component 13; first wall 110, a liquid storage structure 115 is provided on the first wall 110, the liquid storage structure 115 is provided corresponding to the liquid collection structure 130, the liquid storage structure 115 is used to collect the condensate collected by the liquid collection structure 130.

[0108] 330, The battery cell 20 is housed in the housing 11.

[0109] Figure 10 A schematic block diagram of a battery manufacturing apparatus 400 according to one embodiment of this application is shown. Figure 10 As shown, the battery manufacturing apparatus 400 may include a providing module 410 and an installation module 420.

[0110] The module 410 is used to: provide a battery cell 20 and a housing 11. The housing 11 includes: a cooling component 13, on which a liquid collecting structure 130 is provided, which is used to collect the condensate generated by the cooling component 13; a first wall 110, on which a liquid storage structure 115 is provided, which is correspondingly provided with the liquid collecting structure 130, and is used to collect the condensate collected by the liquid collecting structure 130.

[0111] The mounting module 420 is used to house the battery cell 20 within the housing 11.

[0112] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This 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 casing, characterized in that, The housing is used to house the battery cells (20), and the housing includes: A cooling component (13) is attached to the surface of a battery cell (20). A liquid collection structure (130) is provided on the cooling component (13) for collecting the condensate generated by the cooling component (13). A first wall (110) is provided with a liquid storage structure (115), which is provided in correspondence with the liquid collection structure (130). The liquid storage structure (115) is used to collect the condensate collected by the liquid collection structure (130). The cooling component (13) protrudes into the liquid storage structure (115) at a position corresponding to the liquid storage structure (115) to form the liquid collection structure (130). The cooling component (13) includes a connecting region (131), a transition region (132), and a main body region (133). The connecting region (131) is used to connect the first wall (110). The connecting region (131) and the main body region (133) are on different planes. The transition region (132) connects the connecting region (131) and the main body region (133) to form two corner structures. The corner structure closer to the liquid storage structure (115) forms the liquid collection structure (130).

2. The housing according to claim 1, characterized in that, The liquid collection structure (130) is a pointed protrusion or an arc-shaped protrusion.

3. The housing according to claim 1, characterized in that, The plane where the connecting region (131) is located is closer to the liquid storage structure (115) than the plane where the main body region (133) is located; the corner structure formed by the transition region (132) connecting the connecting region (131) forms the liquid collection structure (130).

4. The housing according to any one of claims 1 to 3, characterized in that, The first wall (110) includes a plurality of sub-walls, which are connected to form a cavity of the liquid storage structure (115), and the opening (116) of the cavity corresponds to the liquid collection structure (130).

5. The housing according to claim 4, characterized in that, The opening (116) is located in the direction of gravity of the liquid collection structure (130).

6. The housing according to any one of claims 1 to 5, characterized in that, The liquid storage structure (115) is isolated from the electrical cavity (117) of the housing, which is used to accommodate the battery cell (20).

7. The housing according to any one of claims 1 to 6, characterized in that, The liquid storage structure (115) is provided with a moisture-absorbing structure for adsorbing the condensate.

8. The housing according to any one of claims 1 to 7, characterized in that, The first wall (110) is provided with a flow guiding structure for discharging the condensate from the box.

9. A battery, characterized in that, include: Battery cell (20); as well as The housing (11) according to any one of claims 1 to 8, wherein the battery cell (20) is housed within the housing (11).

10. An electrical appliance, characterized in that, include: The battery (10) according to claim 9 is used to provide electrical energy.

11. A method for preparing a battery, characterized in that, include: Provide battery cells (20); Provide a housing (11), the housing (11) comprising: A cooling component (13) is attached to the surface of a battery cell (20). A liquid collection structure (130) is provided on the cooling component (13) for collecting the condensate generated by the cooling component (13). A first wall (110) is provided with a liquid storage structure (115), which is provided in correspondence with the liquid collection structure (130). The liquid storage structure (115) is used to collect the condensate collected by the liquid collection structure (130). The battery cell (20) is housed (330) inside the housing (11); The cooling component (13) protrudes into the liquid storage structure (115) at a position corresponding to the liquid storage structure (115) to form the liquid collection structure (130). The cooling component (13) includes a connecting region (131), a transition region (132), and a main body region (133). The connecting region (131) is used to connect the first wall (110). The connecting region (131) and the main body region (133) are on different planes. The transition region (132) connects the connecting region (131) and the main body region (133) to form two corner structures. The corner structure closer to the liquid storage structure (115) forms the liquid collection structure (130).

12. An apparatus for manufacturing batteries, characterized in that, include: A module (410) is provided for providing a battery cell (20) and a housing (11), the housing (11) comprising: A cooling component (13) is attached to the surface of a battery cell (20). A liquid collection structure (130) is provided on the cooling component (13) for collecting the condensate generated by the cooling component (13). A first wall (110) is provided with a liquid storage structure (115), which is provided in correspondence with the liquid collection structure (130). The liquid storage structure (115) is used to collect the condensate collected by the liquid collection structure (130). Mounting module (420) is used to house the battery cell (20) within the housing (11); The cooling component (13) protrudes into the liquid storage structure (115) at a position corresponding to the liquid storage structure (115) to form the liquid collection structure (130). The cooling component (13) includes a connecting region (131), a transition region (132), and a main body region (133). The connecting region (131) is used to connect the first wall (110). The connecting region (131) and the main body region (133) are on different planes. The transition region (132) connects the connecting region (131) and the main body region (133) to form two corner structures. The corner structure closer to the liquid storage structure (115) forms the liquid collection structure (130).

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