Battery and electric device

Abstract

The invention provides a battery and a power utilization device. The structural performance of a mounting structure in the battery can be improved. The battery includes: a battery cell; the box body is used for containing the battery monomers, the box body comprises a first wall and a second wall which are oppositely arranged, the first wall and the second wall intersect with the first direction, a first cross beam is arranged between the first wall and the second wall, the first cross beam comprises a third wall which intersects with the first direction and is close to the first wall, and the second cross beam comprises a second wall which intersects with the second direction and is close to the second wall. A gap is formed between the third wall and the first wall, and the first cross beam is provided with a first through hole extending in the first direction; and the mounting structure is configured to at least partially penetrate through the first through hole and abut against the third wall in the gap.

Description

Technical Field

[0001] The present application relates to the field of batteries, and in particular to a battery and an electrical device. 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 in energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in their development.

[0003] The mounting structure in the battery is used to mount the battery on an external mechanism of the battery. How to improve the structural performance of the mounting structure has become a problem that needs to be solved urgently. Summary of the invention

[0004] The embodiments of the present application provide a battery and an electrical device, which can improve the structural performance of the mounting structure in the battery.

[0005] In a first aspect, a battery is provided, comprising: a battery cell; a box body for accommodating the battery cell, the box body comprising a first wall and a second wall arranged opposite to each other, the first wall and the second wall intersecting with the first direction, a first cross beam being arranged between the first wall and the second wall, the first cross beam comprising a third wall intersecting with the first direction and close to the first wall, a gap being arranged between the third wall and the first wall, the first cross beam being provided with a first through hole extending along the first direction; and a mounting structure, configured to at least partially pass through the first through hole and abut against the third wall in the gap.

[0006] The battery is mounted on its external mechanism through a mounting structure in the battery. A first crossbeam is usually provided in the battery box. In the embodiment of the present application, a first through hole for accommodating the mounting structure is provided on the first crossbeam, and a gap is provided between the third wall of the first crossbeam and the first wall of the box. The mounting structure is configured to pass through the first through hole on the first crossbeam and abut against the first crossbeam in the gap between the first crossbeam and the box, thereby making full use of the first through hole on the first crossbeam and the gap between the first crossbeam and the box, thereby achieving coordination between the mounting structure, the box and the first crossbeam, and improving the structural performance of the mounting structure.

[0007] The angle between the first wall and the first direction is, for example, within any of the following ranges: 90°±15°, 90°±10°, 90°±5°.

[0008] The angle between the second wall and the first direction is, for example, within any of the following ranges: 90°±15°, 90°±10°, 90°±5°.

[0009] The angle between the third wall and the first direction is, for example, within any of the following ranges: 90°±15°, 90°±10°, 90°±5°.

[0010] In some possible implementations, the mounting structure includes a first sleeve, a second sleeve, and a transition sleeve connected between the second sleeve and the first sleeve, the end of the transition sleeve extends along a second direction to form the first extension portion, the second direction is at a predetermined angle to the first direction, wherein the transition sleeve is configured to pass through the first through hole and abut against the third wall in the gap through the first extension portion. The predetermined angle is, for example, within any of the following ranges: 90°±15°, 90°±10°, 90°±5°.

[0011] In this embodiment, the mounting structure includes a first sleeve, a second sleeve, and a transition sleeve for connecting the second sleeve and the first sleeve, the end of the transition sleeve extends along the second direction to form the above-mentioned first extension portion, and the transition sleeve is configured to pass through the first through hole in the first beam and abut against the third wall of the first beam in the gap through the first extension portion. Since the thickness of the first extension portion is small, the gap can be set to be smaller, thereby improving the space utilization inside the battery.

[0012] In some possible implementations, a second through hole is provided on the first wall at a position corresponding to the first through hole, the first sleeve includes a second extension portion extending along the second direction, the first sleeve is configured to pass through the second through hole to connect with the adapter sleeve, and abut against the first wall through the second extension portion on a side of the first wall away from the battery cell. In this way, the connection between the mounting structure and the first wall of the box body is achieved.

[0013] In some possible implementations, a first seal is disposed between the first extension and the first wall. The first seal can prevent external liquid from entering the battery from the contact position between the first extension and the first wall to a certain extent.

[0014] In some possible implementations, the inner wall of the adapter sleeve is sleeved on the outer walls of the first sleeve and the second sleeve, so as to achieve the connection between the second sleeve and the first sleeve through the adapter sleeve.

[0015] In some possible implementations, a second seal is provided between the inner wall of the adapter sleeve and the outer wall of the second sleeve. The second seal can prevent external liquid from entering the battery from the connection between the adapter sleeve and the second sleeve to a certain extent.

[0016] In some possible implementations, the battery further includes a thermal management component of the battery cell, the thermal management component is disposed between the second wall and the battery cell, a third through hole is provided on the thermal management component at a position corresponding to the first through hole, the second sleeve includes a third extension formed along the second direction, the second sleeve is configured to pass through the third through hole and connect to the adapter sleeve, and abut against the thermal management component through the third extension on a side of the thermal management component away from the battery cell. In this way, the mounting structure can provide mounting force to the battery through the thermal management component.

[0017] In some possible implementations, a third seal is provided between the third extension and the thermal management component. The provision of the third seal can, to a certain extent, prevent external liquid from entering the battery from the connection between the first sleeve and the thermal management component.

[0018] In some possible implementations, a mounting portion is provided on the first extension portion, and the mounting portion is used to cooperate with an installation tool to install the adapter sleeve. By providing the mounting portion at the end of the adapter sleeve, it is convenient to install the adapter sleeve using a matching installation tool.

[0019] In some possible implementations, the mounting portion is a recessed portion provided on the first extension portion, the opening of the recessed portion is along the first direction toward the first wall, and the recessed portion is used to engage with the mounting tool. By engaging the mounting tool in the recessed portion and applying a torsional force to the adapter sleeve from the end of the adapter sleeve, the adapter sleeve and the first sleeve are sleeved together, which is easy to implement and simple to operate. For example, the recessed portion is a hexagonal recessed portion, and the mounting tool is a hexagonal wrench.

[0020] In some possible implementations, the first wall includes a first area and a second area, the first area is used to connect the mounting structure, the first area and the second area have different heights along the first direction to form a storage space along the first direction, and the storage space is used to store the external structure of the battery. In other words, the upper wall of the battery box can be provided with a recessed portion to store the external structure of the battery, such as a body cross beam, which is conducive to improving the utilization rate of the space inside the vehicle.

[0021] In some possible implementations, the first crossbeam includes at least one cavity arranged along the first direction to reduce the weight of the first crossbeam.

[0022] In a second aspect, an electrical device is provided, comprising the battery according to the first aspect or any possible implementation manner of the first aspect, wherein the battery is used to provide electrical energy to the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the structure of a vehicle according to an embodiment of the present application.

[0025] Figure 2 It is a schematic diagram of the structure of a battery according to an embodiment of the present application.

[0026] Figure 3 It is a partial exploded view of a battery according to an embodiment of the present application.

[0027] Figure 4 It is a partial cross-sectional view of a battery according to an embodiment of the present application.

[0028] Figure 5 It is a schematic diagram of the structure of the adapter sleeve of an embodiment of the present application.

[0029] Figure 6 It is a partial exploded view of a battery according to another embodiment of the present application.

[0030] In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION

[0031] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] 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 to which this application belongs; 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" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "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.

[0034] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0035] 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.

[0036] 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.

[0037] The term "multiple" as used in the present application refers to two or more than two. Similarly, the term "multiple groups" refers to two or more than two groups, and the term "multiple sheets" refers to two or more than two sheets.

[0038] In the embodiments of the present application, the battery cell may be a secondary battery, which refers to a battery cell that can be continuously used by activating the active material by charging after the battery cell is discharged. The battery cell may be, for example, a lithium-ion battery, a sodium-ion battery, a sodium-lithium-ion battery, a lithium metal battery, a sodium metal battery, a lithium-sulfur battery, a magnesium-ion battery, a nickel-hydrogen battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of the present application are not limited thereto.

[0039] A battery cell usually 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 inserted and removed back and forth between the positive electrode and the negative electrode. The separator is arranged 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.

[0040] In some embodiments, the positive electrode may be a positive electrode sheet, which includes a positive electrode collector and a positive electrode active material disposed on at least one surface of the positive electrode collector.

[0041] 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.

[0042] 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 or stainless steel treated with silver, 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 layer and a metal layer. The composite current collector may be formed by forming a metal material such as aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy on a polymer material substrate such as polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.

[0043] Among them, the positive electrode active material includes, for example, at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides and their respective modified compounds. The present application is not limited to these materials, and other traditional materials that can be used as positive electrode active materials for batteries can also be used. These positive electrode active materials can be used alone or in combination of two or more. Among them, examples of lithium-containing phosphates may include, but are not limited to, lithium iron phosphates such as LiFePO4 (also referred to as LFP), composite materials of lithium iron phosphate and carbon, lithium manganese phosphates such as LiMnPO4, composite materials of lithium manganese phosphate and carbon, lithium iron manganese phosphate, and at least one of composite materials of lithium iron manganese phosphate and carbon.

[0044] In some embodiments, the negative electrode may be a negative electrode sheet, which includes a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.

[0045] The negative electrode current collector has two surfaces facing each other in its thickness direction, and the negative electrode active material is disposed on either or both of the two facing surfaces of the negative electrode current collector.

[0046] 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 or stainless steel treated with silver, 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 such as copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy on a polymer material substrate such as polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.

[0047] The negative electrode active material includes, for example, at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, lithium titanate, and the like.

[0048] In some embodiments, the negative electrode may also be a foamed metal. The foamed metal may be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, etc. It should be noted that when the foamed metal is used as the negative electrode sheet, the surface of the foamed metal may or may not be provided with a negative electrode active material.

[0049] As an example, the negative electrode current collector may be filled with or / and deposited with a lithium source material, potassium metal or sodium metal, where the lithium source material is lithium metal and / or a lithium-rich material.

[0050] The material of the positive electrode current collector may be, for example, aluminum, and the material of the negative electrode current collector may be, for example, copper.

[0051] The separator in the electrode assembly is disposed between the positive electrode and the negative electrode. In some embodiments, the separator is a separator. The present application does not limit the type of separator, and any porous structure separator with good chemical stability and mechanical stability can be selected. For 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.

[0052] 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.

[0053] In some embodiments, the battery cell further includes an electrolyte, which plays a role in conducting ions between the positive and negative electrodes. The present application does not limit the type of electrolyte, which can be selected according to needs. The electrolyte can be liquid, gel or solid.

[0054] In the embodiment of the present application, the electrode assembly may be a winding structure, wherein the positive electrode sheet and the negative electrode sheet are wound to form a winding structure. The electrode assembly may also be a laminated structure, for example, the positive electrode sheet and the negative electrode sheet may be provided in a plurality, and the plurality of positive electrode sheets and the plurality of negative electrode sheets are alternately stacked. Alternatively, the positive electrode sheet may be provided in a plurality, and the negative electrode sheet may be folded to form a plurality of stacked folded sections, with a positive electrode sheet sandwiched between adjacent folded sections; or, both the positive electrode sheet and the negative electrode sheet may be folded to form a plurality of stacked folded sections.

[0055] There may be a plurality of separators, each of which is disposed between any adjacent positive electrode sheets and negative electrode sheets.

[0056] In some embodiments, the separator may be disposed continuously and disposed between any adjacent positive electrode sheets and negative electrode sheets by folding or winding.

[0057] The shape of the electrode assembly can be, for example, cylindrical, flat, or polygonal. The electrode assembly can be provided with a tab, which is used to conduct current from the electrode assembly. The tab includes a positive tab and a negative tab.

[0058] In some embodiments, the battery cell includes a shell. The shell is used to encapsulate components such as electrode assemblies and electrolytes. The shell can be a steel shell, an aluminum shell, a plastic shell such as polypropylene, a composite metal shell such as a copper-aluminum composite shell, or an aluminum-plastic film. The shell includes a box body and a cover plate.

[0059] The battery cells may be, for example, cylindrical battery cells, prismatic battery cells, soft-pack battery cells or battery cells of other shapes. Prismatic battery cells include square-shell battery cells, blade-shaped battery cells or polygonal prismatic batteries, among which the polygonal prismatic batteries may be hexagonal prismatic batteries, etc. This application does not impose any restrictions on this.

[0060] The battery described in the embodiments of the present application may be a single physical module including one or more battery cells to provide higher voltage and capacity. In the case of multiple battery cells, the multiple battery cells are connected in series, in parallel or in mixed connection through a busbar.

[0061] 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.

[0062] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.

[0063] In some embodiments, the box body can be used as a part of the chassis structure of the vehicle. For example, part of the box body can become at least a part of the vehicle floor, or part of the box body can become at least a part of the cross beam and longitudinal beam of the vehicle.

[0064] Since multiple battery cells in a battery are electrically connected through a certain connection method, when electrolyte leakage occurs in a battery cell, it may cause risks such as short circuit. In view of this, the present application provides a battery and a signal transmission component thereof, which can be applied to a battery with inverted battery cells to reduce the risk of short circuit between battery cells.

[0065] The technical solutions described in the embodiments of the present application are applicable to various devices that use batteries, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, electric vehicles, ships and spacecraft, for example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0066] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the devices described above, but can also be applied to all devices using batteries. However, for the sake of simplicity, the following embodiments are described using electric vehicles as examples.

[0067] For example, Figure 1 As shown, it is a structural schematic diagram of a vehicle 1 according to an embodiment of the present application. The vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A motor 30, a controller 20 and a battery 10 can be arranged inside the vehicle 1. The controller 20 is used to control the battery 10 to power the motor 30. For example, a battery 10 can be arranged at the bottom, front or rear of the vehicle 1. The battery 10 can be used to power the vehicle 1. For example, the battery 10 can be used as an operating power supply for the vehicle 1, for the circuit system of the vehicle 1, for example, for the working power demand during the start, navigation and operation of the vehicle 1. In another embodiment of the present application, the battery 10 can not only be used as an operating power supply for the vehicle 1, but also as a driving power supply for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1. In addition, a battery for low-voltage power supply, such as a 12V or 48V battery, may also be arranged inside the vehicle 1.

[0068] In order to meet different power usage requirements, the battery may include multiple different types of battery cells. Multiple battery cells can be connected in series, in parallel or in a mixed manner according to the type of battery cells to form multiple battery cell groups, and the multiple battery cell groups are then connected in series to form a battery, wherein the mixed connection is a mixture of series and parallel connections. Multiple different battery cells can also be directly connected in series, in parallel or in a mixed manner to form a battery. In other words, multiple battery cells can directly form a battery, or they can first form a battery cell group according to the type of battery cells, and then form a battery from the battery cell group.

[0069] Figure 2 A schematic diagram of the structure of a battery 10 according to an embodiment of the present application is shown, and the battery 10 may include a plurality of battery cells (not shown in the figure). The battery 10 may also include a housing (or cover) 110, the interior of the housing 110 is a hollow structure, and a plurality of battery cells are accommodated in the housing 110. The housing 110 may include two parts, which are respectively referred to as a first housing portion 111 and a second housing portion 112, and the first housing portion 111 and the second housing portion 112 are buckled together. The shapes of the first housing portion 111 and the second housing portion 112 may be determined according to the shapes of the combination of the plurality of battery cells, and at least one of the first housing portion 111 and the second housing portion 112 has an opening.

[0070] For example, Figure 2 As shown, the first box body 111 and the second box body 112 can both be hollow structures and each have only one open surface, the openings of the first box body 111 and the second box body 112 are arranged opposite to each other, and the first box body 111 and the second box body 112 are buckled together to form a box body 110 with a closed chamber. After multiple battery cells are connected in parallel, in series or in mixed series, they are placed in the box body 110 formed by the buckling of the first box body 111 and the second box body 112.

[0071] For another example, only one of the first box body 111 and the second box body 112 is a hollow rectangular parallelepiped with an opening, and the other is in a plate shape to cover the opening. For example, if the second box body 112 is a hollow structure with only one face being an opening face, and the first box body 111 is in a plate shape, then the first box body 111 covers the opening of the second box body 112 to form a box body 110 with a closed chamber, which can be used to accommodate multiple battery cells. After multiple battery cells are connected in parallel, in series, or in a mixed combination, they are placed in the box body 110 formed by the first box body 111 and the second box body 112 being buckled together.

[0072] In addition, the battery 10 may also include other structures, which will not be described in detail here.

[0073] As an example, Figure 3 and Figure 4The battery 10 of the embodiment of the present application is shown. Figure 3 is an exploded view of the battery 10, Figure 4 FIG. 1 is a partial cross-sectional view of the battery 10. Figure 3 and Figure 4 As shown, the battery 10 includes a battery cell 120 , a box body 110 and a mounting structure 130 , wherein the box body 110 is used to accommodate the battery cell 120 , and the mounting structure 130 is used to mount the battery 10 on an external mechanism of the battery 10 .

[0074] like Figure 3 and Figure 4 As shown, the box body 110 includes a first wall 1111 and a second wall 1112 that are arranged opposite to each other, wherein the first wall 1111 and the second wall 1112 intersect with the first direction X. The angle between the first wall 1111 and the first direction X can be set according to factors such as errors caused by its manufacturing process. For example, the angle between the first wall 1111 and the first direction X can be within any of the following ranges: 90°±15°, 90°±10°, 90°±5°. Of course, the first wall 1111 can be perpendicular to the first direction X. Similarly, the angle between the second wall 1112 and the first direction X can be set according to factors such as errors caused by its manufacturing process. For example, the angle between the second wall 1112 and the first direction X can be within any of the following ranges: 90°±15°, 90°±10°, 90°±5°. Of course, the second wall 1112 can be perpendicular to the first direction X.

[0075] It can be understood that when the battery 10 is disposed in an electrical device, the first wall 1111 may be an upper wall of the box body 110, and the second wall 1112 may be a lower wall of the box body 110. A first crossbeam 113 is disposed between the first wall 1111 and the second wall 1112.

[0076] The first crossbeam 113 includes a third wall 1131 intersecting the first direction X and close to the first wall 1111, wherein a gap 150 is provided between the third wall 1131 and the first wall 1111. The angle between the third wall 1131 and the first direction X can be set according to factors such as errors caused by its manufacturing process. For example, the angle between the third wall 1131 and the first direction X can be within any of the following ranges: 90°±15°, 90°±10°, 90°±5°. Of course, the third wall 1131 can be perpendicular to the first direction X.

[0077] It is understood that when the battery 10 is disposed in an electrical device, the third wall 1131 may be an upper wall of the first beam 113. The first beam 113 may also include at least one cavity disposed along the first direction X to reduce the weight of the first beam 113.

[0078] like Figure 3 and Figure 4 As shown, the first beam 113 is provided with a first through hole 161 extending along the first direction X, and the first through hole 161 is used to accommodate the mounting structure 130 . The mounting structure 130 is configured to at least partially pass through the first through hole 161 and abut against the third wall 1131 in the gap 150 .

[0079] It can be seen that a first through hole 161 for accommodating the mounting structure 130 is provided on the first crossbeam 113, a gap 150 is provided between the third wall 1131 of the first crossbeam 113 and the first wall 1111 of the box body 110, and the mounting structure 130 is configured to pass through the first through hole 161 on the first crossbeam 113 and abut against the first crossbeam 113 in the gap 150, thereby making full use of the first through hole 161 on the first crossbeam 113 and the gap 150 between the first crossbeam 113 and the box body 110, thereby achieving the coordination between the mounting structure 130, the box body 110 and the first crossbeam 113, and improving the structural performance of the mounting structure 130.

[0080] In some embodiments, the mounting structure 130 may be formed by one or more sleeves, for example Figure 3 and Figure 4 As shown, the mounting structure 130 includes a first sleeve 131 , a second sleeve 132 , and a transition sleeve 133 , and the transition sleeve 133 is connected between the second sleeve 132 and the first sleeve 131 .

[0081] The end of the adapter sleeve 133 extends along the second direction Y to form a first extension portion 1331, and the second direction Y is perpendicular to the first direction X, or a predetermined angle is allowed between the second direction Y and the first direction X, and the predetermined angle can be set based on factors such as errors caused by the manufacturing process of the adapter sleeve 133. For example, the preset angle can be within any of the following ranges: 90°±15°, 90°±10°, 90°±5°. The first extension portion 1331 of the adapter sleeve 133 can be, for example, an annular shape surrounding the barrel wall of the adapter sleeve 133. In this embodiment, the adapter sleeve 133 can be configured to pass through the first through hole 161 and abut against the third wall 1131 of the first beam 113 in the gap 150 through the first extension portion 1331.

[0082] As an example, Figure 3 and Figure 4As shown, the end of the adapter sleeve 133 extends along the second direction Y to form a first extension portion 1331, and the adapter sleeve 133 is configured to pass through the first through hole 161 in the first beam 113 and abut against the third wall 1131 of the first beam 113 in the gap 150 through the first extension portion 1331. Since the size D of the gap 150 can be set based on the thickness of the first extension portion 1331, that is, the size of the first extension portion 1331 in the first direction X, it is beneficial to improve the space utilization inside the battery 10.

[0083] If the thickness of the first extension part 1331 is small, its structural strength cannot be guaranteed. If the thickness of the first extension part 1331 is large, the gap 150 needs to be set larger, which is not conducive to improving the space utilization rate inside the battery 10. Optionally, the size of the first extension part 1331 in the first direction X can be set between 2 mm and 10 mm, for example, about 5 mm. Accordingly, the size D of the gap 150 can be set equal to or slightly larger than the size of the first extension part 1331 to accommodate the first extension part 1331. Passing the adapter sleeve 133 through the first through hole 161 and making the first extension part 1331 abut against the first crossbeam 113 in the gap 150 can improve the structural stability between the mounting structure 130 and the box body 110 and the first crossbeam 113, and can make the size D of the gap 150 smaller, that is, only the first extension part 1331 needs to be accommodated, thereby greatly improving the space utilization rate inside the battery 10.

[0084] In some embodiments, a mounting portion 1332 is provided on the first extension portion 1331 of the adapter sleeve 133, and the mounting portion 1332 is used to cooperate with an installation tool to install the adapter sleeve 133. By providing the mounting portion 1332 at the end of the adapter sleeve 133, it is convenient to install the adapter sleeve 133 using a matching installation tool.

[0085] For example, the mounting portion 1332 may be a recessed portion provided on the first extension portion 1331, the opening of the recessed portion being provided along the first direction X toward the first wall 1111, and the recessed portion being used to engage with the mounting tool. By engaging the mounting tool in the recessed portion and applying a torsional force to the adapter sleeve 133 from the end of the adapter sleeve 133, the adapter sleeve 133 and the first sleeve 131 are sleeved together, which is easy to implement and simple to operate.

[0086] The projection shape of the recess on the plane perpendicular to the first direction X can be, for example, an I-shape, a X-shape, or a hexagon. Correspondingly, the projection of the part of the installation tool used to snap into the recess on the plane can also be an I-shape, a X-shape, or a hexagon.

[0087] As an example, Figure 5In the structure of the adapter sleeve 133 shown, the mounting portion 1332 is a hexagonal recess, and accordingly, the mounting tool is a hexagonal wrench.

[0088] The adapter sleeve 133 may have only an upper flange surface but no lower flange surface, for example Figure 5 The end surface of the first extension portion 1331 facing the first wall 1111 is an upper flange surface; alternatively, the adapter sleeve 133 may also have an upper flange surface and a lower flange surface at the same time.

[0089] In some embodiments, a second through hole 162 is provided on the first wall 1111 at a position corresponding to the first through hole 161, and the first sleeve 131 includes a second extension portion 1311 extending along the second direction Y. The first sleeve 131 is configured to pass through the second through hole 162 and abut against the first wall 1111 through the second extension portion 1311 on a side of the first wall 1111 away from the battery cell 120. In this way, the connection between the mounting structure 130 and the first wall 1111 of the box body 110 is achieved.

[0090] For example, Figure 3 and Figure 4 As shown, the first extension portion 1331 is located in the interval 150 between the first wall 1111 of the box body 110 and the third wall 1131 of the first crossbeam 113. The second extension portion 1311 of the first sleeve 131 and the first extension portion 1331 of the adapter sleeve 133 are respectively located at the upper and lower sides of the first wall 1111 of the box body 110. After the first sleeve 131 and the adapter sleeve 133 are connected, the first extension portion 1331 and the second extension portion 1311 can clamp the first wall 1111 along the first direction X.

[0091] Alternatively, if Figure 3 and Figure 4 As shown, a first seal 141 is disposed between the first extension portion 1331 and the first wall 1111. The first seal 141 can prevent external liquid from entering the battery 10 from the contact position between the first extension portion 1331 and the first wall 1111 to a certain extent. The first seal 141 can be, for example, a double-rib seal ring.

[0092] In some embodiments, Figure 3 and Figure 4 As shown, the inner wall of the adapter sleeve 133 is sleeved on the outer wall of the second sleeve 132 and the outer wall of the first sleeve 131, thereby realizing the connection between the second sleeve 132 and the first sleeve 131. For example, the inner wall of the adapter sleeve 131, the outer wall of the first sleeve 131, and the outer wall of the second sleeve 132 may be provided with threads, so that the adapter sleeve 133 is connected to the first sleeve 131 and the second sleeve 132 respectively by threaded connection.

[0093] Alternatively, if Figure 3 and Figure 4 As shown, a second seal 142 is provided between the inner wall of the adapter sleeve 133 and the outer wall of the second sleeve 132. The second seal 142 can prevent external liquid from entering the battery 10 from the connection between the adapter sleeve 133 and the second sleeve 132 to a certain extent. The second seal 142 can be, for example, an O-ring.

[0094] It can be understood that the diameter of the first through hole 161 can be determined according to the diameter of the mounting structure 130. For example, the diameter of the position of the first through hole 161 corresponding to the second sleeve 132 needs to be greater than or equal to the outer diameter of the second sleeve 132, so that the second sleeve 132 can be accommodated in the corresponding position of the first through hole 161; for another example, the diameter of the position of the first through hole 161 corresponding to the adapter sleeve 133 needs to be greater than or equal to the outer diameter of the adapter sleeve 133, so that the adapter sleeve 133 can be accommodated in the corresponding position of the first through hole 161. Of course, the diameter of the first through hole 161 can be set to a fixed value, which is greater than or equal to the outer diameter of the adapter sleeve 133. It should be noted that the diameter of the first through hole 161 does not need to be set too large, and it only needs to be able to accommodate the mounting structure 130. If the diameter of the first through hole 161 is set too large, it may affect the overall strength of the first crossbeam 113.

[0095] In some embodiments, Figure 3 and Figure 4 As shown, the battery 10 further includes a heat management component 170, which is disposed between the second wall 1121 of the box body 110 and the battery cell 120. A third through hole 163 is disposed on the heat management component 170 at a position corresponding to the first through hole 161. The end of the second sleeve 132 away from the adapter sleeve 133 extends along the second direction Y to form a third extension portion 1321. The second sleeve 132 is configured to pass through the third through hole 163 and abut against the heat management component 170 through the third extension portion 1321 on the side of the heat management component 170 away from the battery cell 120. In this way, the mounting structure 130 can provide mounting force to the battery 10 through the heat management component 170.

[0096] The heat management component 170 may be, for example, a heat exchange plate, which is used to achieve heat exchange of the battery cell 120. Generally, a water cooling plate or the like may be used as the heat exchange plate of the battery cell 120.

[0097] Optionally, a third seal 143 is provided between the third extension 1321 and the thermal management component 170. The third seal 143 can prevent external liquid from entering the battery 10 from the connection between the first sleeve 131 and the thermal management component 170 to a certain extent. The third seal 143 can be, for example, a double-rib seal ring.

[0098] In some embodiments, Figure 6 As shown, the first wall 1111 of the box body 110 includes a first area 1111A and a second area 1111B, the first area 1111A is used to connect the mounting structure 130, and the first area 1111A and the second area 1111B have different heights along the first direction X to form a storage space along the first direction X, and the storage space can be used to store external mechanisms such as a vehicle body cross beam. In other words, the upper wall of the box body 110 of the battery 10 can be provided with a storage recess to store external mechanisms of the battery 10, which is conducive to improving the utilization rate of the space inside the vehicle.

[0099] The present application also provides an electrical device, including the battery 10 described in any of the above embodiments, and the battery 10 is used to provide electrical energy to the electrical device. The electrical device may be, for example, Figure 1 Vehicle shown.

[0100] It can be seen that the battery 10 of the embodiment of the present application is mounted on the vehicle body through the mounting structure 130, and the mounting structure 130 includes a second sleeve 132, a first sleeve 131 and a transfer sleeve 133, and a first extension portion 1331 is formed at the end of the transfer sleeve 133. Since the first crossbeam 113 is provided in the box body 110, and there is a gap 150 between the first crossbeam 113 and the box body 110, each sleeve of the mounting structure 130 is sequentially extended into the first through hole 161 at the corresponding position on the first crossbeam 113, and the first extension portion 1331 is located in the gap 150 and overlapped with the first crossbeam 113. Since the thickness of the first extension portion 1331 is small, the gap 150 can be set to be small, thereby improving the space utilization inside the battery 10.

[0101] It should be noted that, under the premise of no conflict, the various embodiments described in this application and / or the technical features in each embodiment can be arbitrarily combined with each other, and the technical solution obtained after the combination should also fall within the protection scope of this application.

[0102] 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 is no structural conflict. 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: Battery cells; A box body, used to accommodate the battery cell, the box body comprising a first wall and a second wall arranged opposite to each other, the first wall and the second wall intersecting with the first direction, a first crossbeam arranged between the first wall and the second wall, the first crossbeam comprising a third wall intersecting with the first direction and close to the first wall, a gap being arranged between the third wall and the first wall, and the first crossbeam being provided with a first through hole extending along the first direction; as well as, The mounting structure is configured to at least partially pass through the first through hole and abut against the third wall in the gap.

2. The battery according to claim 1, characterized in that The mounting structure includes a first sleeve, a second sleeve, and a transition sleeve connected between the second sleeve and the first sleeve, wherein the end of the transition sleeve extends along a second direction to form the first extension portion, and the second direction forms a predetermined angle with the first direction, wherein the transition sleeve is configured to pass through the first through hole and abut against the third wall in the gap through the first extension portion.

3. The battery according to claim 2, characterized in that A second through hole is provided on the first wall at a position corresponding to the first through hole, the first sleeve includes a second extension portion extending along the second direction, the first sleeve is configured to pass through the second through hole to connect with the adapter sleeve, and abut against the first wall through the second extension portion on the side of the first wall away from the battery cell.

4. The battery according to claim 2 or 3, characterized in that: A first sealing member is disposed between the first extension portion and the first wall.

5. The battery according to any one of claims 2 to 4, characterized in that The inner wall of the adapter sleeve is sleeved on the outer walls of the first sleeve and the second sleeve.

6. The battery according to claim 5, characterized in that A second sealing member is provided between the inner wall of the adapter sleeve and the outer wall of the second sleeve.

7. The battery according to any one of claims 2 to 6, characterized in that The battery also includes a thermal management component of the battery cell, which is arranged between the second wall and the battery cell. A third through hole is provided on the thermal management component at a position corresponding to the first through hole. The second sleeve includes a third extension portion extending along the second direction. The second sleeve is configured to pass through the third through hole and be connected to the adapter sleeve, and abut against the thermal management component through the third extension portion on a side of the thermal management component away from the battery cell.

8. The battery according to claim 7, characterized in that A third sealant is disposed between the third extension portion and the heat management component.

9. The battery according to any one of claims 2 to 8, characterized in that The predetermined angle is within any of the following ranges: 90°±15°, 90°±10°, 90°±5°.

10. The battery according to any one of claims 2 to 9, characterized in that The first extension portion is provided with a mounting portion, and the mounting portion is used to cooperate with a mounting tool to mount the adapter sleeve.

11. The battery according to claim 10, characterized in that The mounting portion is a recessed portion provided on the first extending portion, an opening of the recessed portion is directed toward the first wall along the first direction, and the recessed portion is used for being engaged with the mounting tool.

12. The battery according to claim 11, characterized in that The recess is a hexagonal recess, and the installation tool is a hexagonal wrench.

13. The battery according to any one of claims 1 to 12, characterized in that The angle between the first wall and the first direction is within any of the following ranges: 90°±15°, 90°±10°, 90°±5°; The angle between the second wall and the first direction is within any of the following ranges: 90°±15°, 90°±10°, 90°±5°; The angle between the third wall and the first direction is within any of the following ranges: 90°±15°, 90°±10°, 90°±5°.

14. The battery according to any one of claims 1 to 13, characterized in that The first wall includes a first area and a second area, the first area is used to connect the mounting structure, the first area and the second area have different heights along the first direction to form a receiving space along the first direction, and the receiving space is used to receive the external mechanism of the battery.

15. An electrical device, characterized in that: The invention comprises a battery according to any one of claims 1 to 14, wherein the battery is used to provide electrical energy to the electrical device.

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