Battery and electric device

Abstract

Provided in the present application are a battery and an electric device. The structural performance of a mounting structure in the battery can be improved. The battery comprises: battery cells; a case, which is configured to contain the battery cells, wherein the case comprises a first wall and a second wall arranged opposite each other, the first wall and the second wall intersect a first direction, a first cross beam is arranged between the first wall and the second wall, and comprises a third wall, which intersects the first direction and is close to the first wall, a gap is provided 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 a mounting structure, which is configured to at least partially pass through the first through hole and abut against the third wall in the gap.

Description

Batteries and electrical devices

[0001] This application claims priority to the invention patent application filed with the China Patent Office on June 29, 2023, with application number 202310782442.5 and invention name “Battery and Electrical Device,” the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the field of batteries, and in particular to a battery and an electrical device. Background Art

[0003] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0004] The mounting structure in the battery is used to mount the battery on an external structure of the battery. How to improve the structural performance of the mounting structure has become an urgent problem to be solved.

[0005] Summary of the Invention

[0006] In a first aspect, a battery is provided, comprising: a battery cell; a box for accommodating the battery cell, the box 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 being provided 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 provided between the third wall and the first wall, the first crossbeam being provided with a first through hole extending along the first direction; and a mounting structure being configured to at least partially pass through the first through hole and abut against the third wall within the gap.

[0007] The battery is mounted on its external structure through the 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, realizing the coordination between the mounting structure, the box and the first crossbeam, and improving the structural performance of the mounting structure.

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

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

[0010] The angle between the third wall and the first direction is, for example, within any one of the following ranges: 90°±15°, 90°±10°, or 90°±5°.

[0011] In some possible implementations, the mounting structure includes a first sleeve, a second sleeve, and an adapter sleeve connected between the second sleeve and the first sleeve. The end of the adapter sleeve extends along a second direction to form the first extension portion. The second direction forms a predetermined angle with the first direction. The adapter sleeve is configured to pass through the first through-hole and abut the third wall within the gap via the first extension portion. The predetermined angle is, for example, within any of the following ranges: 90°±15°, 90°±10°, or 90°±5°.

[0012] 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 within 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.

[0013] 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 extending along the second direction, and the first sleeve is configured to pass through the second through-hole to connect with the adapter sleeve and abut against the first wall via the second extension on the side of the first wall away from the battery cell. In this way, the mounting structure is connected to the first wall of the box.

[0014] In some possible implementations, a first seal is provided between the first extension and the first wall. The provision of the first seal can, to a certain extent, prevent external liquid from entering the battery from the contact position between the first extension and the first wall.

[0015] 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 that the second sleeve and the first sleeve are connected through the adapter sleeve.

[0016] 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 provision of the second seal can, to a certain extent, prevent external liquid from entering the battery through the connection between the adapter sleeve and the second sleeve.

[0017] In some possible implementations, the battery further includes a thermal management component for the battery cell, the thermal management component being disposed between the second wall and the battery cell. The thermal management component has a third through hole at a position corresponding to the first through hole. The second sleeve includes a third extension extending along the second direction. The second sleeve is configured to pass through the third through hole and connect to the adapter sleeve. The third extension abuts the thermal management component 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 via the thermal management component.

[0018] 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 through the connection between the first sleeve and the thermal management component.

[0019] In some possible implementations, the first extension portion is provided with a mounting portion for cooperating 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.

[0020] In some possible implementations, the mounting portion is a recessed portion provided on the first extension portion, with the opening of the recess facing the first wall along the first direction. The recess is configured to engage with the mounting tool. By engaging the mounting tool within the recessed portion and applying a torsional force to the adapter sleeve from the end of the adapter sleeve, the adapter sleeve is easily and simply connected to the first sleeve. For example, the recessed portion may be hexagonal, and the mounting tool may be an Allen wrench.

[0021] In some possible implementations, the first wall includes a first region and a second region. The first region is used to connect to the mounting structure. The first region and the second region have different heights along the first direction to form a storage space along the first direction. The storage space is used to accommodate the external components of the battery. In other words, the upper wall of the battery box can be provided with a recessed portion to accommodate external components of the battery, such as a vehicle body cross member, thereby improving the utilization of the vehicle interior space.

[0022] In some possible implementations, the first beam includes at least one cavity arranged along the first direction to reduce the weight of the first beam.

[0023] In a second aspect, an electrical device is provided, comprising the battery according to the first aspect or any possible implementation of the first aspect, wherein the battery is used to provide electrical energy to the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0025] FIG1 is a schematic structural diagram of a vehicle according to an embodiment of the present application.

[0026] FIG2 is a schematic structural diagram of a battery according to an embodiment of the present application.

[0027] FIG3 is a partial exploded view of a battery according to an embodiment of the present application.

[0028] FIG4 is a partial cross-sectional view of a battery according to an embodiment of the present application.

[0029] FIG5 is a schematic structural diagram of a transition sleeve according to an embodiment of the present application.

[0030] FIG6 is a partial exploded view of a battery according to another embodiment of the present application.

[0031] In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION

[0032] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present application, but are not intended to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0033] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are 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" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0035] 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.

[0036] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0037] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0038] The term "multiple" as used in this 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.

[0039] In the embodiments of the present application, the battery cells may be secondary batteries. A secondary battery refers to a battery cell that can be recharged to activate the active material after discharge and continue to be used. The battery cells may be, for example, lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, etc., although the embodiments of the present application are not limited thereto.

[0040] A battery cell typically includes an electrode assembly. This assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of a battery cell, active ions, such as lithium ions, are inserted and removed between the positive and negative electrodes. The separator, placed between the positive and negative electrodes, prevents short circuits while allowing the active ions to pass through.

[0041] In some embodiments, the positive electrode may be a positive electrode sheet, which includes a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.

[0042] The positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is provided on either or both of the two facing surfaces of the positive electrode current collector.

[0043] As an example, the positive electrode current collector may be a metal foil or a composite current collector. For example, the metal foil may be silver-surface-treated aluminum or stainless steel, copper, aluminum, nickel, carbon electrodes, carbon, nickel, or titanium. The composite current collector may include a polymer 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, or silver alloy onto a polymer substrate such as polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, or polyethylene.

[0044] 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 battery positive electrode active materials 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, at least one of lithium iron phosphates such as LiFePO4 (also referred to as LFP), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate such as LiMnPO4, a composite material of lithium manganese phosphate and carbon, lithium iron manganese phosphate, and a composite material of lithium iron manganese phosphate and carbon.

[0045] 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.

[0046] The negative electrode current collector has two surfaces facing each other in its thickness direction, and the negative electrode active material is provided on either one or both of the two facing surfaces of the negative electrode current collector.

[0047] As an example, the negative electrode current collector may be a metal foil or a composite current collector. For example, the metal foil may include silver-surface-treated aluminum or stainless steel, copper, aluminum, nickel, carbon electrodes, carbon, nickel, or titanium. The composite current collector may include a polymer base layer 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, or silver alloy on a polymer substrate such as polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, or polyethylene.

[0048] 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.

[0049] In some embodiments, the negative electrode may also use a metal foam. The metal foam may be nickel foam, copper foam, aluminum foam, alloy foam, or carbon foam. It should be noted that when the metal foam is used as the negative electrode, the surface of the metal foam may or may not be provided with a negative electrode active material.

[0050] 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.

[0051] 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.

[0052] The separator in the electrode assembly is disposed between the positive electrode and the negative electrode. In some embodiments, the separator is a separator membrane. This application does not limit the type of separator membrane; any porous separator membrane with good chemical and mechanical stability can be used. For example, the primary material of the separator membrane can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic.

[0053] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode and the negative electrode and serves to transport ions and isolate the positive and negative electrodes.

[0054] In some embodiments, the battery cell also includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. This application does not limit the type of electrolyte, and the electrolyte can be selected based on needs. The electrolyte can be liquid, gel, or solid.

[0055] In an embodiment of the present application, the electrode assembly may be a wound structure, wherein the positive electrode sheet and the negative electrode sheet are wound to form a wound 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 segments, with a positive electrode sheet sandwiched between adjacent folded segments; or, both the positive electrode sheet and the negative electrode sheet may be folded to form a plurality of stacked folded segments.

[0056] There may be multiple separators, each of which is disposed between any adjacent positive electrode sheets and negative electrode sheets.

[0057] In some embodiments, the separator may be provided continuously and disposed between any adjacent positive electrode sheets and negative electrode sheets by folding or winding.

[0058] The electrode assembly may be shaped, for example, cylindrical, flat, or polygonal. The electrode assembly may be provided with tabs for conducting current from the electrode assembly. The tabs include positive tabs and negative tabs.

[0059] In some embodiments, a battery cell includes a housing. The housing is used to encapsulate components such as the electrode assembly and electrolyte. The housing can be steel, aluminum, plastic such as polypropylene, composite metal such as a copper-aluminum composite, or aluminum-plastic film. The housing includes a housing and a cover.

[0060] 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 batteries, among which polygonal batteries may be hexagonal batteries, etc. This application does not impose any restrictions on this.

[0061] The battery described in the embodiments of the present application can 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 hybrid through a busbar.

[0062] 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.

[0063] 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 housed in the case.

[0064] 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.

[0065] Because multiple battery cells in a battery are electrically connected through a certain connection method, electrolyte leakage or other conditions in a battery cell may cause a short circuit or other risks. In view of this, the present application provides a battery and a signal transmission assembly thereof, which can be used in a battery with inverted battery cells to reduce the risk of short circuits between battery cells.

[0066] The technical solutions described in the embodiments of the present application are applicable to various battery-using devices, such as mobile phones, portable devices, laptop computers, electric vehicles, electric toys, electric tools, electric vehicles, ships and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.

[0067] 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 an example.

[0068] For example, as shown in Figure 1, a schematic diagram of the structure of a vehicle 1 according to one embodiment of the present application is shown. Vehicle 1 can be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, among others. A motor 30, a controller 20, and a battery 10 can be installed inside vehicle 1. Controller 20 is used to control the battery 10 to power motor 30. For example, battery 10 can be installed at the bottom, front, or rear of vehicle 1. Battery 10 can be used to power vehicle 1. For example, battery 10 can serve as the operating power source of vehicle 1 and be used for the circuit system of vehicle 1, such as the power requirements for starting, navigation, and operation of vehicle 1. In another embodiment of the present application, battery 10 can serve not only as the operating power source of vehicle 1, but also as the driving power source of vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for vehicle 1. In addition, vehicle 1 may also be equipped with a battery for low-voltage power supply, such as a 12V or 48V battery.

[0069] To meet different power requirements, a battery can include multiple different types of battery cells. Multiple battery cells can be connected in series, in parallel, or in a hybrid manner according to the type of battery cell to form multiple battery cell groups, and the multiple battery cell groups are then connected in series to form a battery, where hybrid is a mixture of series and parallel connections. Multiple different battery cells can also be directly connected in series, in parallel, or in a hybrid manner to form a battery. In other words, multiple battery cells can be directly combined into a battery, or they can be first combined into battery cell groups according to the type of battery cells, and then the battery cell groups are formed into a battery.

[0070] Figure 2 shows a schematic structural diagram of a battery 10 according to an embodiment of the present application. 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, referred to herein as a first housing portion 111 and a second housing portion 112, which are snapped together. The shapes of the first housing portion 111 and the second housing portion 112 may be determined according to the shape 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.

[0071] For example, as shown in FIG2 , the first housing portion 111 and the second housing portion 112 can both be hollow structures with only one open surface. The openings of the first housing portion 111 and the second housing portion 112 are arranged opposite each other, and the first housing portion 111 and the second housing portion 112 are interlocked to form a housing 110 having a closed chamber. Multiple battery cells are connected in parallel, series, or in a mixed combination and placed in the housing 110 formed by the interlocking of the first housing portion 111 and the second housing portion 112.

[0072] For another example, only one of the first and second housing portions 111, 112 is a hollow rectangular parallelepiped with an opening, while the other is plate-shaped to cover the opening. For example, if the second housing portion 112 is hollow with only one open surface and the first housing portion 111 is plate-shaped, then the first housing portion 111 covers the opening of the second housing portion 112 to form a housing 110 having a closed chamber, which can be used to accommodate multiple battery cells. Multiple battery cells are connected in parallel, series, or in a mixed combination and placed within the housing 110 formed by the first and second housing portions 111, 112 being fastened together.

[0073] In addition, the battery 10 may also include other structures, which will not be described in detail here.

[0074] As an example, Figures 3 and 4 illustrate a battery 10 according to an embodiment of the present application. Figure 3 is an exploded view of the battery 10, and Figure 4 is a partial cross-sectional view of the battery 10. As shown in Figures 3 and 4, the battery 10 includes a battery cell 120, a housing 110, and a mounting structure 130. The housing 110 is used to accommodate the battery cell 120, and the mounting structure 130 is used to mount the battery 10 on an external device.

[0075] As shown in Figures 3 and 4 , the housing 110 includes a first wall 1111 and a second wall 1112 disposed opposite each other, wherein the first wall 1111 and the second wall 1112 intersect with a first direction X. The angle between the first wall 1111 and the first direction X can be set based on factors such as manufacturing process tolerances. 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°, or 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 based on factors such as manufacturing process tolerances. 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°, or 90°±5°. Of course, the second wall 1112 can be perpendicular to the first direction X.

[0076] It is understood that when the battery 10 is installed in an electrical device, the first wall 1111 may be the upper wall of the box body 110, and the second wall 1112 may be the lower wall of the box body 110. A first crossbeam 113 is provided between the first wall 1111 and the second wall 1112.

[0077] The first crossbeam 113 includes a third wall 1131 that intersects the first direction X and is adjacent to the first wall 1111. 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 based on factors such as errors caused by the 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°, or 90°±5°. Of course, the third wall 1131 can be perpendicular to the first direction X.

[0078] It is understood that when the battery 10 is installed in an electrical device, the third wall 1131 may be the upper wall of the first beam 113. The first beam 113 may further include at least one cavity along the first direction X to reduce the weight of the first beam 113.

[0079] 3 and 4 , the first beam 113 is provided with a first through hole 161 extending along the first direction X. 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 within the gap 150.

[0080] It can be seen that a first through hole 161 for accommodating the mounting structure 130 is provided on the first beam 113, and a gap 150 is provided between the third wall 1131 of the first beam 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 beam 113 and abut against the first beam 113 within the gap 150, thereby making full use of the first through hole 161 on the first beam 113 and the gap 150 between the first beam 113 and the box body 110, realizing the coordination between the mounting structure 130, the box body 110 and the first beam 113, and improving the structural performance of the mounting structure 130.

[0081] In some embodiments, the mounting structure 130 can be formed by one or more sleeves. For example, as shown in Figures 3 and 4, 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.

[0082] The end of the adapter sleeve 133 extends along a second direction Y to form a first extension portion 1331. 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. This predetermined angle can be set based on factors such as errors caused by the manufacturing process of the adapter sleeve 133. For example, the predetermined angle can be within any of the following ranges: 90°±15°, 90°±10°, or 90°±5°. The first extension portion 1331 of the adapter sleeve 133 can be, for example, an annular shape surrounding the 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 crossbeam 113 within the gap 150 via the first extension portion 1331.

[0083] As an example, as shown in Figures 3 and 4, 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.

[0084] If the thickness of first extension 1331 is too small, its structural strength may be affected. If the thickness of first extension 1331 is too large, gap 150 needs to be larger, which is not conducive to improving the space utilization within battery 10. Optionally, the dimension of first extension 1331 in first direction X can be set between 2 mm and 10 mm, for example, approximately 5 mm. Accordingly, dimension D of gap 150 can be set to be equal to or slightly larger than the dimension of first extension 1331 to accommodate first extension 1331. Passing adapter sleeve 133 through first through hole 161 and allowing first extension 1331 to abut first crossbeam 113 within gap 150 not only improves the structural stability between mounting structure 130, housing 110, and first crossbeam 113, but also reduces dimension D of gap 150, namely, only accommodating first extension 1331, thereby significantly improving the space utilization within battery 10.

[0085] In some embodiments, a mounting portion 1332 is provided on the first extension portion 1331 of the adapter sleeve 133. 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 use a matching installation tool to install the adapter sleeve 133.

[0086] For example, the mounting portion 1332 can be a recessed portion provided on the first extension portion 1331, with the opening of the recessed portion disposed along the first direction X toward the first wall 1111. The recessed portion is configured to engage with an installation tool. By engaging the installation tool within the recessed portion and applying a twisting force to the adapter sleeve 133 from the end thereof, the adapter sleeve 133 is easily and simply attached to the first sleeve 131.

[0087] 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 engage in the recess on the plane can also be an I-shape, a X-shape, or a hexagon.

[0088] As an example, in the structure of the adapter sleeve 133 shown in FIG5 , the mounting portion 1332 is a hexagonal recess, and accordingly, the mounting tool is a hexagonal wrench.

[0089] The adapter sleeve 133 may have only an upper flange surface but no lower flange surface. For example, the end surface of the first extension portion 1331 facing the first wall 1111 shown in Figure 5 is the upper flange surface; or, the adapter sleeve 133 may also have both an upper flange surface and a lower flange surface.

[0090] 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. 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 via 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.

[0091] For example, as shown in Figures 3 and 4 , the first extension portion 1331 is located within the gap 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 located on the upper and lower sides of the first wall 1111 of the box body 110, respectively. 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.

[0092] Optionally, as shown in Figures 3 and 4, a first seal 141 is provided between the first extension 1331 and the first wall 1111. The provision of the first seal 141 can, to a certain extent, prevent external liquid from entering the interior of the battery 10 through the contact point between the first extension 1331 and the first wall 1111. The first seal 141 can be, for example, a double-ribbed seal ring.

[0093] In some embodiments, as shown in Figures 3 and 4, the inner wall of the adapter sleeve 133 is sleeved onto the outer wall of the second sleeve 132 and the outer wall of the first sleeve 131, thereby connecting the second sleeve 132 to 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, thereby connecting the adapter sleeve 133 to the first sleeve 131 and the second sleeve 132 respectively through threaded connections.

[0094] Optionally, as shown in Figures 3 and 4, a second sealing member 142 is provided between the inner wall of the adapter sleeve 133 and the outer wall of the second sleeve 132. The provision of the second sealing member 142 can, to a certain extent, prevent external liquid from entering the interior of the battery 10 through the connection between the adapter sleeve 133 and the second sleeve 132. The second sealing member 142 can be, for example, an O-ring.

[0095] It is understood that the diameter of the first through hole 161 can be determined based on 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 that 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.

[0096] In some embodiments, as shown in Figures 3 and 4 , the battery 10 further includes a thermal management component 170 disposed between the second wall 1112 of the housing 110 and the battery cell 120. A third through hole 163 is defined on the thermal management component 170 at a position corresponding to the first through hole 161. The end of the second sleeve 132, distal from the adapter sleeve 133, extends in the second direction Y to form a third extension 1321. The second sleeve 132 is configured to pass through the third through hole 163 and abut against the thermal management component 170 via the third extension 1321 on a side of the thermal management component 170 distal from the battery cell 120. In this manner, the mounting structure 130 can provide mounting force to the battery 10 via the thermal management component 170.

[0097] 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. Typically, a water cooling plate or the like may be used as the heat exchange plate of the battery cell 120.

[0098] Optionally, a third seal 143 is provided between the third extension 1321 and the thermal management component 170. The third seal 143 can, to a certain extent, prevent external liquid from entering the interior of the battery 10 through the connection between the first sleeve 131 and the thermal management component 170. The third seal 143 can be, for example, a double-ribbed seal ring.

[0099] In some embodiments, as shown in FIG6 , the first wall 1111 of the housing 110 includes a first region 1111A and a second region 1111B. The first region 1111A is used to connect to the mounting structure 130. The first region 1111A and the second region 1111B have different heights along the first direction X, thereby forming a storage space along the first direction X. This storage space can be used to accommodate external devices such as a vehicle body cross member. In other words, the upper wall of the housing 110 of the battery 10 can be provided with a storage recess for accommodating external devices of the battery 10, thereby improving the utilization of the space within the vehicle.

[0100] The present application also provides an electrical device, comprising the battery 10 described in any of the above embodiments, wherein the battery 10 is used to provide electrical energy to the electrical device. The electrical device may be, for example, the vehicle shown in FIG1 .

[0101] As can be seen, the battery 10 of the embodiment of the present application is mounted on the vehicle body via a mounting structure 130. The mounting structure 130 includes a second sleeve 132, a first sleeve 131, and an adapter sleeve 133. The end of the adapter sleeve 133 is formed with a first extension portion 1331. Since a first crossbeam 113 is provided in the housing 110, and a gap 150 exists between the first crossbeam 113 and the housing 110, each sleeve of the mounting structure 130 is sequentially inserted into the first through-hole 161 at a corresponding position on the first crossbeam 113, and the first extension portion 1331 is positioned within the gap 150 and overlaps the first crossbeam 113. Since the thickness of the first extension portion 1331 is relatively small, the gap 150 can be set to be relatively small, thereby improving the space utilization inside the battery 10.

[0102] It should be noted that, under the premise of no conflict, the various embodiments and / or technical features in each embodiment described in this application can be arbitrarily combined with each other, and the technical solution obtained after the combination should also fall within the scope of protection of this application.

[0103] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions 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 a 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 a 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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