Battery and electric equipment

Abstract

The utility model discloses a battery and electric equipment, and belongs to the technical field of batteries. The utility model provides a battery, which comprises a box body, a plurality of battery monomers, a confluence piece, a hanging assembly and an insulating component, and the plurality of battery monomers are accommodated in the box body. The bus member is used for electrically connecting a plurality of battery cells. The mounting assembly is at least partially arranged in the box body. The insulating component is arranged on the peripheral side of the mounting assembly and used for insulating and isolating the mounting assembly and the bus piece. Through the insulating member arranged on the peripheral side of the mounting assembly, the risk of short circuit of the mounting assembly and the confluence piece by splashes during thermal runaway of the battery monomers can be reduced, and the reliability of the battery can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, 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] How to improve battery reliability is an urgent problem to be solved in battery technology. Utility Model Content

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

[0005] In a first aspect, the present application provides a battery, the battery comprising a box, a plurality of battery cells, a busbar, a mounting assembly and an insulating member, wherein the plurality of battery cells are accommodated in the box. The busbar is used to electrically connect the plurality of battery cells. The mounting assembly is at least partially disposed in the box. The insulating member is disposed on the peripheral side of the mounting assembly, and the insulating member is used to insulate and isolate the mounting assembly and the busbar.

[0006] In the technical solution of the embodiment of the present application, the insulating component arranged on the peripheral side of the mounting assembly can reduce the risk of splashes short-circuiting the mounting assembly and the busbar when the battery cell thermally runs away, which is beneficial to improving the reliability of the battery.

[0007] In one or more embodiments of the first aspect, the battery further includes a wiring harness isolation plate, the busbar is disposed on the wiring harness isolation plate, the wiring harness isolation plate is provided with a first through hole, and the mounting assembly includes a mounting sleeve, which is passed through the first through hole.

[0008] In the above scheme, since the mounting sleeve is passed through the first through hole of the wiring harness isolation plate, the distance between the mounting sleeve and the busbar arranged on the wiring harness isolation plate is relatively close. When the battery cell thermally runs away, the risk of short circuit between the busbar and the mounting sleeve is relatively high. The provision of an insulating component can significantly reduce the risk of short circuit between the mounting sleeve and the busbar, thereby making the battery have higher reliability.

[0009] In one or more embodiments of the first aspect, the box includes a first part and a second part, at least one of the first part and the second part has an opening, the first part and the second part are mutually engaged to close the opening, and the second part is used to carry a plurality of battery cells. The insulating member includes a first insulating member, the first insulating member is sleeved on the mounting sleeve, and at least a portion of the first insulating member is located between the first part and the wiring harness isolation plate.

[0010] In the above scheme, part of the first insulating component arranged between the first part and the wiring harness isolation plate can block the emissions during thermal runaway of the battery cell, which to a certain extent reduces the possibility of splashes during thermal runaway of the battery cell contacting the mounting sleeve, thereby further improving the reliability of the battery.

[0011] In one or more embodiments of the first aspect, the mounting assembly further comprises a gasket disposed between the mounting sleeve and the first portion. The first insulating member covers at least a portion of an outer surface of the gasket to insulate the gasket and the busbar.

[0012] In the above solution, the first insulating member can reduce the risk of splashes short-circuiting the gasket and the busbar when the battery cell is in thermal runaway, thereby improving the reliability of the battery.

[0013] In one or more embodiments of the first aspect, the first insulating component includes a body and a first flange, the body is annular, the body is located between the wiring harness isolation plate and the gasket, the first flange extends from the outer periphery of the body toward the direction close to the first part, and the first flange is surrounded by the gasket.

[0014] In the above solution, the first flange surrounding the gasket can block the splashes when the battery cell is in thermal runaway, reduce the risk of the splashes short-circuiting the gasket and the busbar, and help improve the reliability of the battery.

[0015] In one or more embodiments of the first aspect, the first insulating component also includes a second flange, which extends from the inner periphery of the body in a direction away from the first part, and at least a portion of the second flange is located between the hole wall of the first through hole and the outer peripheral surface of the mounting sleeve.

[0016] In the above scheme, the second flange can block the splashes when the battery cell thermally runs away, reducing the risk of the splashes short-circuiting the mounting sleeve and the busbar. The first insulating component includes the first flange and the second flange, which can further reduce the risk of the splashes contacting the mounting assembly, which is beneficial to further improve the reliability of the battery.

[0017] In one or more embodiments of the first aspect, along the axial direction of the mounting sleeve, the first insulating member abuts against the first portion.

[0018] In the above scheme, the abutment between the first insulating component and the first part can reduce the risk of shaking of the mounting sleeve on the one hand, so that the battery has higher structural stability; on the other hand, it can also absorb part of the energy when the first part of the box vibrates, which is beneficial to reduce the risk of abnormal noise generated by the first part.

[0019] In one or more embodiments of the first aspect, the insulating component further includes a second insulating component, which is disposed between the second portion and the first insulating component along the axial direction of the mounting sleeve, and the second insulating component wraps the outer circumferential surface of the mounting sleeve.

[0020] In the above solution, the provision of the second insulating member can reduce the risk of short circuit between the second portion and the mounting sleeve, which is beneficial to improving the reliability of the battery.

[0021] In one or more embodiments of the first aspect, a limiting portion is provided on the outer circumferential surface of the mounting sleeve, and the limiting portion is used to limit the first insulating component from moving in an axial direction of the mounting sleeve in a direction away from the first part.

[0022] In the above scheme, the limiting portion is provided to facilitate the assembly of the first insulating component, and at the same time improve the stability of the first insulating component after being connected to the mounting sleeve, reduce the possibility of insulation failure of the first insulating component, and help improve the reliability of the battery.

[0023] In one or more embodiments of the first aspect, the limiting portion is a step surface, and the first insulating component abuts against the step surface.

[0024] In the above solution, the first insulating component is limited in the axial direction of the mounting sleeve by abutting the first insulating component against the step surface, and the processing and assembly costs are relatively low.

[0025] In one or more embodiments of the first aspect, the limiting portion is a groove, and the first insulating component further includes a clamping portion, which is clamped with the groove.

[0026] In the above solution, the first insulating component is limited in the axial direction of the mounting sleeve by means of a clamping connection, so that the stability of the first insulating component and the mounting sleeve after assembly can be higher.

[0027] In one or more embodiments of the first aspect, a plurality of grooves and a plurality of clamping portions are provided, and the plurality of grooves are arranged at intervals along the circumference of the mounting sleeve, and the clamping portions correspond to the grooves one by one.

[0028] In the above solution, a plurality of grooves and a plurality of clamping parts corresponding to the grooves are provided, which can further improve the stability of the first insulating component and the mounting sleeve after assembly.

[0029] In a second aspect, the present application provides an electrical device, which includes a battery in one or more embodiments of the first aspect, and the battery is used to provide electrical energy.

[0030] In the above solution, since the battery of the first aspect has high reliability, the electrical equipment including the battery of the first aspect also has high reliability.

[0031] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, which can be implemented in accordance with the contents of the specification, and to make other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0033] Figure 1 A schematic diagram of the structure of a vehicle according to some embodiments of the present application;

[0034] Figure 2 An exploded view of a battery according to some embodiments of the present application;

[0035] Figure 3 An exploded view of a portion of the structure of a battery according to some embodiments of the present application;

[0036] Figure 4 A cross-sectional view of a portion of the structure of a battery according to some embodiments of the present application;

[0037] Figure 5 An exploded view of a portion of the structure of a battery according to some other embodiments of the present application;

[0038] Figure 6 sectional views of partial structures of batteries according to other embodiments of the present application.

[0039] The reference numerals in the specific implementation manner are as follows:

[0040] 1000-vehicle; 200-controller; 300-motor; 100-battery; 11-housing; 111-first part; 112-second part; 12-battery cell; 13-bus; 14-mounting assembly; 141-mounting sleeve; 1411-groove; 1412-step surface; 142-gasket; 143-nut; 144-screw; 15-wiring harness isolation plate; 151-first through hole; 16-insulating member; 161-first insulating member; 1611-main body; 1612-first flange; 1613-second flange; 1614-clamping portion; 162-second insulating member. DETAILED DESCRIPTION

[0041] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0043] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0044] Reference to "embodiments" herein 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 herein may be combined with other embodiments.

[0045] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0046] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0047] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] In the present application, battery cells may include but are not limited to lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries or magnesium-ion batteries, etc. The shape of the battery cell may include but is not limited to a cylinder, a flat body, a rectangular parallelepiped or other shapes, etc. The battery cell may include but is not limited to a cylindrical battery cell, a square battery cell, a soft-pack battery cell and a blade battery cell according to the packaging method.

[0049] In some high-power applications such as electric vehicles, the application of batteries includes three levels: battery cells, battery modules and batteries. The battery module is formed by electrically connecting a certain number of battery cells together and placing them in a frame in order to protect the battery cells from external impact, heat, vibration, etc. The battery refers to the final state of the battery system installed in the electric vehicle. The battery mentioned in the embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. The battery generally includes a casing for encapsulating one or more battery cells. The casing can reduce the risk of liquid or other foreign matter affecting the charging or discharging of the battery cells.

[0050] The following will mainly focus on the rectangular battery cell. It should be understood that the embodiments described below are also applicable to cylindrical battery cells, soft-pack battery cells, or blade battery cells in some aspects.

[0051] In a typical battery cell structure, the battery cell includes a housing, an electrode assembly, and an electrolyte.

[0052] The tab generally leads the electrical energy of the electrode assembly by being electrically connected to a conductive member. In some cases, the conductive member is a transition piece connecting the tab and the electrode terminal. In other cases, the conductive member is an electrode terminal.

[0053] The pressure relief component refers to an element or component that is actuated to release the internal pressure or temperature when the internal pressure or temperature of the battery cell or other conditions reaches a predetermined threshold.

[0054] When the internal pressure or temperature or other conditions of the battery cell reach a predetermined threshold, it is also called thermal runaway of the battery cell. At this time, the pressure relief component will be activated or activated to a certain state, so that the internal pressure and temperature of the battery cell can be released. The high-temperature and high-pressure substances inside the battery cell will be discharged from the part where the pressure relief component is set as emissions. In some cases, the emissions will be discharged in a splashing manner. The discharge of emissions can relieve pressure and temperature of the battery cell under controllable pressure or temperature, thereby reducing the risk of serious accidents such as battery explosion.

[0055] For a rectangular battery cell, the electrode terminal is generally disposed on the end cap portion. In some other cases, the electrode terminal may also be disposed on the housing portion. Multiple battery cells are connected in series and / or in parallel via the electrode terminals for use in various applications.

[0056] The battery generally further includes a busbar, which is used to electrically connect multiple battery cells. For example, the busbar can electrically connect electrode terminals of multiple battery cells to achieve series connection, parallel connection or hybrid connection of multiple battery cells.

[0057] Taking electric vehicles as an example, the battery box and the vehicle body are two completely independent systems, which need to be connected together through connectors. In order to improve the connection stability between the box and the vehicle body, multiple mounting points for connecting to the vehicle body are generally set outside or inside the box, and the battery and the vehicle body are connected through mounting components set at the mounting points.

[0058] The development of battery technology must take into account many design factors at the same time, such as energy density, cycle life, discharge capacity, charge and discharge rate and other performance parameters. In addition, battery reliability must also be considered.

[0059] In order to increase the energy density of the battery, the remaining space after the battery cells are installed inside the battery will be compressed as much as possible, which will reduce the distance between the collector and the other metal parts inside the box. Generally, the pressure relief components and collectors of the battery cells are located on the same side inside the battery. When the battery cells thermally run away, due to the close distance between the collector and the mounting assembly, the risk of the splashes discharged from the pressure relief components short-circuiting the collector and the mounting assembly is high, and short circuits and ignitions are likely to occur inside the battery, resulting in poor battery reliability.

[0060] In view of this, the present application provides a battery, the battery comprising a case, a plurality of battery cells, a busbar, a mounting assembly and an insulating member, wherein the plurality of battery cells are housed in the case. The busbar is used to electrically connect the plurality of battery cells. The mounting assembly is at least partially disposed in the case. The insulating member is disposed on the peripheral side of the mounting assembly, and the insulating member is used to insulate and isolate the mounting assembly and the busbar. The insulating member disposed on the peripheral side of the mounting assembly can reduce the risk of splashes short-circuiting the mounting assembly and the busbar when the battery cells are thermally runaway, which is beneficial to improving the reliability of the battery.

[0061] The technical solutions described in the embodiments of the present application are applicable to battery cells, batteries, and electrical equipment using batteries.

[0062] Electrical equipment includes, but is not limited to, battery vehicles, electric vehicles, ships, and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.

[0063] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0064] For example, Figure 1 The schematic diagram of the structure of the vehicle 1000 of some embodiments of the present application, the vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The motor 300, the controller 200 and the battery 100 can be arranged inside the vehicle 1000, and the controller 200 is used to control the battery 100 to power the motor 300. For example, the battery 100 can be arranged at the bottom or the front or the rear of the vehicle 1000. The battery 100 can be used for powering the vehicle 1000, for example, the battery 100 can be used as the operating power supply of the vehicle 1000, for the circuit system of the vehicle 1000, for example, for the working power demand of the vehicle 1000 during startup, navigation and operation. In another embodiment of the present application, the battery 100 can not only be used as the operating power supply of the vehicle 1000, but also as the driving power supply of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0065] In order to meet different power requirements, the battery 100 may include a plurality of battery cells 12, wherein the plurality of battery cells 12 may be connected in series, in parallel, or in a hybrid connection, wherein the hybrid connection refers to a mixture of series and parallel connections. The battery 100 may also be referred to as a battery pack. Optionally, a plurality of battery cells 12 may first be connected in series, in parallel, or in a hybrid connection to form a battery module, and a plurality of battery modules may then be connected in series, in parallel, or in a hybrid connection to form the battery 100. In other words, a plurality of battery cells 12 may directly form the battery 100, or they may first form a battery module, and then the battery module may form the battery 100.

[0066] For example, see Figure 2 FIG. 2 is an exploded view of a battery 100 according to some embodiments of the present application. The battery 100 may include a plurality of battery cells 12. The battery 100 may also include a housing 11. The housing 11 has a hollow structure inside. The plurality of battery cells 12 are accommodated in the housing 11. Figure 2As shown, they are respectively referred to as the first part 111 and the second part 112, and the first part 111 and the second part 112 are buckled together. The shapes of the first part 111 and the second part 112 can be determined according to the shapes of the combination of multiple battery cells 12, and the first part 111 and the second part 112 can both have an opening. For example, the first part 111 and the second part 112 can both be hollow cuboids and each has only one face as an open face, the opening of the first part 111 and the opening of the second part 112 are arranged opposite to each other, and the first part 111 and the second part 112 are buckled together to form a box body 11 with a closed chamber. After the multiple battery cells 12 are connected in parallel, in series, or in a mixed combination, they are placed in the box body 11 formed by the buckling of the first part 111 and the second part 112.

[0067] Optionally, the battery 100 may also include other structures, which are not described one by one here. For example, the battery 100 may also include a busbar 13, which is used to realize electrical connection between multiple battery cells 12, such as parallel connection, series connection or mixed connection. Specifically, the busbar 13 can realize electrical connection between the battery cells 12 by connecting the electrode terminals of the battery cells 12. Further, the busbar 13 can be fixed to the electrode terminals of the battery cells 12 by welding. The electrical energy of multiple battery cells 12 can be further led out through the conductive mechanism through the box body 11. In some embodiments, the busbar 13 can be arranged on the wiring harness isolation plate 15 inside the box body 11.

[0068] According to different power requirements, the number of battery cells 12 can be set to any value. Multiple battery cells 12 can be connected in series, parallel or hybrid to achieve a larger capacity or power. Since the number of battery cells 12 included in each battery 100 may be large, for ease of installation, the battery cells 12 can be grouped, and each group of battery cells 12 constitutes a battery module. The number of battery cells 12 included in the battery module is not limited and can be set according to demand. The battery 100 may include multiple battery modules, which can be connected in series, parallel or hybrid.

[0069] According to some embodiments of this application, please refer to Figure 2 and Figure 3 The present application provides a battery 100, which includes a housing 11, a plurality of battery cells 12, a busbar 13, a mounting assembly 14, and an insulating member 16. The plurality of battery cells 12 are accommodated in the housing 11. The busbar 13 is used to electrically connect the plurality of battery cells 12. The mounting assembly 14 is at least partially disposed in the housing 11. The insulating member 16 is disposed on the peripheral side of the mounting assembly 14, and the insulating member 16 is used to insulate and isolate the mounting assembly 14 and the busbar 13.

[0070] The box body 11 generally has a receiving cavity for accommodating a plurality of battery cells 12. The box body 11 includes a first part 111 and a second part 112, at least one of which has an opening, and the first part 111 and the second part 112 are buckled together to close the opening to form the above-mentioned receiving cavity. In some embodiments, the first part 111 is an upper cover, and the second part 112 is a lower box body, and the lower box body is used to carry a plurality of battery cells 12. In some other embodiments, the upper cover is used to carry a plurality of battery cells 12. The material of the part of the box body 11 used to carry a plurality of battery cells 12 can be metal, such as aluminum, steel, etc. The material of the rest of the box body 11 can be plastic or metal.

[0071] The busbar 13 may be a bar, and the material may be copper, aluminum, silver, copper-aluminum composite material, etc.

[0072] The mounting assembly 14 is used to mount the battery 100 on an electrical device (e.g., a vehicle 1000). The mounting assembly 14 and the box body 11 may be connected by bonding, plugging, or welding. In the embodiment where the box body 11 includes an upper cover and a lower box body, please refer to Figure 4 and Figure 6 The mounting assembly 14 includes a nut 143, a screw 144 and a mounting sleeve 141. The mounting sleeve 141 is arranged on the beam body inside the lower box body. The nut 143 passes through the upper cover and is locked to the mounting sleeve 141. The screw 144 passes through the bottom plate of the lower box body and is locked to the mounting sleeve 141. The battery 100 is installed on the vehicle 1000 by passing through the bolts installed on the mounting assembly, for example, assembled on the floor of the vehicle 1000.

[0073] The insulating member 16 may be made of polypropylene, polyvinyl chloride, acrylonitrile butadiene styrene copolymer, silicone rubber, ceramic composite tape, etc. The insulating member 16 may be sleeved on the mounting assembly 14, for example, the insulating member 16 may be snapped or plugged into the mounting assembly 14. The insulating member 16 may also be wrapped around the insulating member 16, for example, the insulating member 16 may be bonded to the mounting assembly 14.

[0074] In some embodiments, the battery 100 further includes a wiring harness isolation plate 15, the busbar 13 is disposed on the wiring harness isolation plate 15, the wiring harness isolation plate 15 is provided with a first through hole 151, the mounting assembly 14 is passed through the wiring harness isolation plate 15, and the insulating member 16 is disposed on the wiring harness isolation plate 15 and surrounds the first through hole 151. In an embodiment in which the box body 11 includes an upper cover and a lower box body, the insulating member 16 surrounds the first through hole 151 and the end thereof abuts against the upper cover.

[0075] The insulating component 16 is disposed on the peripheral side of the mounting assembly 14 , which means that when the battery cell 12 thermally runs away, the insulating component 16 can be used to block the splash of the battery cell 12 . In other words, the insulating component 16 is located in the path where the splash contacts the mounting assembly 14 .

[0076] Generally, the busbar 13 needs to be welded to the electrode terminal of the battery cell 12, and part of the busbar 13 will be exposed in the accommodating cavity. This will cause a risk of short circuit between the busbar 13 and the mounting assembly 14. At the same time, the pressure relief component of the general battery cell 12 is set on the side of the electrode terminal of the battery cell 12, and the distance between the pressure relief component and the busbar 13 is relatively close, so the risk of splashes contacting the busbar 13 and the mounting assembly 14 at the same time is relatively high.

[0077] In the technical solution of the embodiment of the present application, the insulating component 16 arranged around the mounting assembly 14 can reduce the risk of splashes short-circuiting the mounting assembly 14 and the busbar 13 when the battery cell 12 thermally runs away, which is beneficial to improving the reliability of the battery 100.

[0078] According to some embodiments of this application, please refer to Figure 2 and Figure 3 The battery 100 also includes a wiring harness isolation plate 15 , the busbar 13 is disposed on the wiring harness isolation plate 15 , the wiring harness isolation plate 15 is provided with a first through hole 151 , and the mounting assembly 14 includes a mounting sleeve 141 , and the mounting sleeve 141 is passed through the first through hole 151 .

[0079] The provision of the wire harness isolation plate 15 can separate the electrical connection area from the area accommodating the battery cell 12, so as to facilitate the arrangement of the wire harness inside the battery 100 and save the space occupied by the wire harness.

[0080] The mounting sleeve 141 is generally provided with a channel penetrating the mounting sleeve 141 in the axial direction for the bolts to pass through when the battery 100 is assembled with the vehicle 1000. The mounting sleeve 141 is generally a cylindrical rotating body, and its outer peripheral surface is a surface radially away from the above-mentioned channel.

[0081] In order to increase the stability of the battery 100 after being connected to the vehicle 1000, the mounting assembly 14 generally penetrates the box 11, that is, the mounting assembly 14 passes through the wiring harness isolation plate 15, and the first through hole 151 preset on the wiring harness isolation plate 15 can be used for the mounting assembly 14 to pass through, for example, for the mounting sleeve 141 of the mounting assembly 14 to pass through. The mounting sleeve 141 passing through the first through hole 151 means that the outer peripheral surface of the mounting sleeve 141 is very close to the busbar 13 near the first through hole 151, and the risk of splashes short-circuiting the busbar 13 and the mounting sleeve 141 is high.

[0082] In the above scheme, since the mounting sleeve 141 is passed through the first through hole 151 of the wiring harness isolation plate 15, the distance between the mounting sleeve 141 and the bus 13 arranged on the wiring harness isolation plate 15 is relatively close. When the battery cell 12 thermally runs away, the risk of short-circuiting between the bus 13 and the mounting sleeve 141 is relatively high. The provision of the insulating component 16 can significantly reduce the risk of short-circuiting between the mounting sleeve 141 and the bus 13, thereby making the battery 100 have higher reliability.

[0083] According to some embodiments of this application, please refer to Figure 2-Figure 4 The box body 11 includes a first portion 111 and a second portion 112. At least one of the first portion 111 and the second portion 112 has an opening. The first portion 111 and the second portion 112 are engaged with each other to close the opening. The second portion 112 is used to carry a plurality of battery cells 12. The insulating member 16 includes a first insulating member 161. The first insulating member 161 is sleeved on the mounting sleeve 141. At least a portion of the first insulating member 161 is located between the first portion 111 and the wiring harness isolation plate 15.

[0084] The first insulating member 161 is sleeved on the mounting sleeve 141, which means that the mounting sleeve 141 is an assembly base of the first insulating member 161. When the first insulating member 161 and the mounting sleeve 141 are assembled, the mounting sleeve 141 can be used as a reference, which reduces the assembly difficulty of the first insulating member 161. The sleeve can be realized by bonding, clamping, abutting, etc.

[0085] At least part of the first insulating member 161 is located between the first portion 111 and the harness isolation plate 15. This means that part of the first insulating member 161 exists between the first portion 111 and the harness isolation plate 15, and this part of the insulating member 161 can block the splash from short-circuiting the mounting sleeve 141 and the busbar 13. For example, please refer to Figure 4 If there is splash between the top of the busbar 13 and the mounting sleeve 141, the first insulating member 161 can reduce the possibility of direct contact between the splash and the mounting sleeve 141. Generally, the busbar 13 will be embedded in the upper surface of the harness isolation plate 15, which means that the exposed area above the busbar 13 is larger than the exposed area below the busbar 13. Disposing at least part of the first insulating member 161 between the first part 111 and the harness isolation plate 15 can significantly reduce the risk of splash short-circuiting the busbar 13 and the mounting sleeve 141. The above-mentioned top can be understood as the space between the harness isolation plate 15 and the first part 111, and the bottom can be understood as the space between the harness isolation plate 15 and the second part 112.

[0086] In the above scheme, the portion of the first insulating component 161 arranged between the first part 111 and the wiring harness isolation plate 15 can block the emissions of the battery cell 12 during thermal runaway, which to a certain extent reduces the possibility of the splashes of the battery cell 12 during thermal runaway contacting the mounting sleeve 141, thereby further improving the reliability of the battery 100.

[0087] According to some embodiments of this application, please refer to Figure 2-Figure 4 The mounting assembly 14 further includes a gasket 142 disposed between the mounting sleeve 141 and the first portion 111. The first insulating member 161 covers at least a portion of an outer surface of the gasket 142 to insulate and isolate the gasket 142 from the busbar 13.

[0088] The gasket 142 is generally a metal part, such as a steel gasket, aluminum, stainless steel, etc.

[0089] In some embodiments, the mounting assembly 14 also includes a nut 143, and a gasket 142 is arranged between the mounting sleeve 141 and the first part 111. The nut 143 passes through the first part 111 and is locked with the mounting sleeve 141. The setting of the gasket 142 can reduce the risk of loosening the connection between the nut 143 and the mounting sleeve 141.

[0090] The gasket 142 is disposed between the mounting sleeve 141 and the first portion 111 , which means that the distance between the gasket 142 and the busbar 13 is relatively close.

[0091] In some embodiments, a portion of the first insulating member 161 surrounds a portion of the liner 142 located inside the accommodating cavity. In other words, in this embodiment, the splashes need to pass through the first insulating member 161 in order to contact the liner 142 .

[0092] In the above solution, the first insulating member 161 can reduce the risk of splashes short-circuiting the gasket 142 and the busbar 13 when the battery cell 12 is in thermal runaway, thereby improving the reliability of the battery 100 .

[0093] According to some embodiments of this application, please refer to Figure 2-Figure 4 The first insulating component 161 includes a main body 1611 and a first flange 1612 . The main body 1611 is annular and is located between the wiring harness isolation plate 15 and the gasket 142 . The first flange 1612 extends from the outer periphery of the main body 1611 toward the direction close to the first part 111 and is surrounded by the gasket 142 .

[0094] The main body 1611 and the first flange 1612 may be integrally formed or separately formed.

[0095] The first flange 1612 is disposed around the gasket 142 , which means that part of the splashing matter needs to pass through the first flange 1612 in order to contact the gasket 142 .

[0096] The body 1611 is annular, and the first flange 1612 extends from the outer periphery of the body 1611 toward the first portion 111. The first flange 1612 is disposed around the liner 142, which means that the body 1611 and the first flange 1612 form a cover. Figure 3 and Figure 4 One end of the first insulating member 161 is connected to the mounting sleeve 141, and the other end of the first insulating member 161 is upwardly covered on the periphery of the gasket 142. In other embodiments, the other end of the first insulating member 161 is connected to the first part 111 to wrap the gasket 142 located in the accommodating cavity.

[0097] In the above solution, the first flange 1612 surrounding the gasket 142 can block the splashes when the battery cell 12 is in thermal runaway, reduce the risk of the splashes short-circuiting the gasket 142 and the busbar 13, and help improve the reliability of the battery 100.

[0098] According to some embodiments of this application, please refer to Figure 3-Figure 6 The first insulating member 161 also includes a second flange 1613 , which extends from the inner periphery of the body 1611 in a direction away from the first portion 111 , and at least a portion of the second flange 1613 is located between the hole wall of the first through hole 151 and the outer peripheral surface of the mounting sleeve 141 .

[0099] At least a portion of the second flange 1613 is located between the hole wall of the first through hole 151 and the outer peripheral surface of the mounting sleeve 141 , which means that the second flange 1613 can reduce the possibility of splashes passing through the first through hole 151 and contacting the mounting sleeve 141 .

[0100] The second flange 1613 can be integrally formed with the body 1611 or separately formed.

[0101] In some embodiments, the first flange 1612, the second flange 1613 and the body 1611 are integrally formed, for example, by injection molding.

[0102] In the above scheme, the second flange 1613 can block the splashes when the battery cell 12 thermally runs away, reducing the risk of the splashes short-circuiting the mounting sleeve 141 and the busbar 13. The first insulating component 161 includes the first flange 1612 and the second flange 1613, which can further reduce the risk of the splashes contacting the mounting assembly 14, which is beneficial to further improve the reliability of the battery 100.

[0103] According to some embodiments of this application, please refer to Figure 3-Figure 6 , along the axial direction of the mounting sleeve 141 , the first insulating member 161 abuts against the first portion 111 .

[0104] The first insulating member 161 is in contact with the first portion 111, which can be understood as an interference fit between the first insulating member 161 and the first portion 111. Figure 4 , the upper end of the first insulating member 161 is in contact with the first part 111. After the first insulating member 161 and the mounting sleeve 141 are assembled, the first part 111 and the second part 112 are buckled. At this time, due to the interference fit between the first insulating member 161 and the first part 111, the first part 111 will exert some downward pressure on the first insulating member 161, and the reaction force of the first insulating member 161 itself will act upward to make the first insulating member 161 abut against the first part 111. In other words, the above arrangement can make the assembly of the first insulating member 161 and the mounting sleeve 141 more stable. Since the material of the first insulating member 161 is relatively soft, when the first part 111 vibrates, the first insulating member 161 can also absorb part of the energy of the vibration.

[0105] In the above scheme, the abutment between the first insulating member 161 and the first part 111 can reduce the risk of shaking of the mounting sleeve 141 on the one hand, so that the battery 100 has a higher structural stability; on the other hand, it can also absorb part of the energy when the first part 111 of the box body 11 vibrates, which is beneficial to reduce the risk of abnormal noise generated by the first part 111.

[0106] According to some embodiments of this application, please refer to Figure 4 and Figure 6 The insulating component 16 further includes a second insulating component 162 , which is disposed between the second portion 112 and the first insulating component 161 along the axial direction of the mounting sleeve 141 , and the second insulating component 162 wraps the outer circumferential surface of the mounting sleeve 141 .

[0107] The second insulating member 162 may be a ceramic insulating tape or a tubular structure. The wall of the tubular structure has a gap along its axial direction. The second insulating member 162 can be assembled to the outer circumferential surface of the sleeve by prying it apart through the gap.

[0108] The material of the second insulating member 162 can be one of polypropylene, polyvinyl chloride, acrylonitrile butadiene styrene copolymer and silicone rubber.

[0109] In some embodiments, the first insulating member 161 and the second insulating member 162 are integrally formed.

[0110] Along the axial direction of the mounting sleeve 141 , the second insulating member 162 is disposed between the second portion 112 and the first insulating member 161 , which means that after the first insulating member 161 is disposed, the second insulating member 162 can be used to insulate and isolate the remaining portion of the mounting sleeve 141 in the accommodating cavity.

[0111] Since the second part 112 is generally used to support the battery cell 12 , it needs to have a certain structural strength and is mostly made of metal materials. After the splash flows into the accommodating cavity, there is a risk of short-circuiting between the mounting sleeve 141 and the second part 112 due to the splash.

[0112] In the above solution, the provision of the second insulating member 162 can reduce the risk of short circuit between the second portion 112 and the mounting sleeve 141 , which is beneficial to improving the reliability of the battery 100 .

[0113] According to some embodiments of this application, please refer to Figures 3 to 6 A limiting portion is provided on the outer circumferential surface of the mounting sleeve 141 , and the limiting portion is used to limit the first insulating component 161 from moving in the axial direction of the mounting sleeve 141 in a direction away from the first portion 111 .

[0114] The limiting portion is used to limit the movement of the first insulating component 161 along the axial direction of the mounting sleeve 141 in the direction away from the first part 111, which means that after the first insulating component 161 is assembled on the mounting sleeve 141, the axial position of the first insulating component 161 on the mounting sleeve 141 is basically fixed. In other words, the assembly position of the first insulating component 161 can be limited by the limiting portion.

[0115] The limiting portion may be a groove 1411 , a step surface 1412 , or the like.

[0116] The setting of the limiting portion can reduce the risk of the first insulating component 161 being separated from the mounting sleeve 141 , thereby helping to reduce the risk of insulation failure of the first insulating component 161 .

[0117] In the above scheme, the limiting portion is provided to facilitate the assembly of the first insulating component 161 , and at the same time improve the stability of the first insulating component 161 after being connected to the mounting sleeve 141 , reduce the possibility of insulation failure of the first insulating component 161 , and help improve the reliability of the battery 100 .

[0118] According to some embodiments of this application, please refer to Figure 5 and Figure 6 The limiting portion is a step surface 1412 , and the first insulating component 161 abuts against the step surface 1412 .

[0119] The step surface 1412 can be formed when the mounting sleeve 141 is processed, or can be formed by secondary processing after the mounting sleeve 141 is processed.

[0120] In some embodiments, please refer to Figure 6, along the axial direction of the mounting sleeve 141, the first insulating member 161 has an end face for contacting with the step surface 1412. When assembling the first insulating member 161, it is only necessary to insert the first insulating member 161 into the sleeve from top to bottom. After one end face of the first insulating member 161 contacts with the step surface 1412, the first insulating member 161 can be restricted from moving in the axial direction away from the first part 111 of the mounting sleeve 141. After the first part 111 and the second part 112 are buckled, the first part 111 and the step surface 1412 clamp the first insulating member 161 to complete the assembly of the first insulating member 161.

[0121] In some embodiments, please refer to Figure 2 , the mounting sleeve 141 includes a first section, a second section and a third section connected in sequence, the diameter of the first section is smaller than the diameter of the second section, the first section is closer to the first part 111 than the second section and the third section, the outer circumference of the first section and the outer circumference of the second section are connected by a step surface 1412, and at least a part of the third section is inserted in the second part 112. The insulating member 16 also includes a second insulating member 162, and the second insulating member 162 surrounds the second section and the third section to expose the outer surface of the second section 112. In other embodiments, the insulating member 16 includes an extension portion, which extends along the axial direction of the mounting sleeve 141 and exceeds the step surface 1412, and at least a part of the extension portion is located on the circumferential side of the second section. Such a setting facilitates the positioning of the first insulating member 161 on the one hand, and on the other hand, along the radial direction of the mounting sleeve 141, all the outer circumferences of the mounting sleeve 141 that are exposed to the accommodating cavity are covered by the insulating member 16, which can further improve the reliability of the battery 100.

[0122] In the above solution, the first insulating component 161 is limited in the axial direction of the mounting sleeve 141 by abutting the step surface 1412 , and the processing and assembly costs are relatively low.

[0123] According to some embodiments of this application, please refer to Figure 3 and Figure 4 The limiting portion is a groove 1411 , and the first insulating component 161 further includes a clamping portion 1614 , which is clamped with the groove 1411 .

[0124] In some embodiments, the first insulating member 161 includes an integrally formed snap-fit ​​portion 1614 , a body 1611 , a first flange 1612 , and a second flange 1613 .

[0125] In some embodiments, please refer to Figure 3 and Figure 4The clamping portion 1614 can be an L-shaped hook. When the first insulating component 161 is assembled to the outer periphery of the sleeve from top to bottom, after the hook moves to a position corresponding to the groove 1411, at least part of the hook is inserted into the groove 1411 to limit the first insulating component 161 from moving in the axial direction of the mounting sleeve 141 away from the first part 111.

[0126] The first insulating component 161 can be restricted from moving in the axial direction away from the first part 111 along the mounting sleeve 141 by the clamping portion 1614 and the groove 1411. The first insulating component 161 can also be restricted from moving in the circumferential direction of the mounting sleeve 141, so that the connection stability between the first insulating component 161 and the mounting sleeve 141 is higher.

[0127] In the above solution, the first insulating component 161 is axially limited in the mounting sleeve 141 by means of a snap connection, so that the first insulating component 161 and the mounting sleeve 141 can be more stable after being assembled.

[0128] According to some embodiments of this application, please refer to Figure 3 and Figure 4 There are multiple grooves 1411 and multiple clamping parts 1614, and the multiple grooves 1411 are arranged at intervals along the circumference of the mounting sleeve 141, and the clamping parts 1614 correspond to the grooves 1411 one by one.

[0129] In some embodiments, the plurality of grooves 1411 are distributed in a circular array about the central axis of the mounting sleeve 141 .

[0130] In the above solution, a plurality of grooves 1411 and a plurality of clamping portions 1614 corresponding to the grooves 1411 are provided, which can further improve the stability of the first insulating component 161 and the mounting sleeve 141 after assembly.

[0131] According to some embodiments of this application, please refer to Figure 1 The present application provides an electrical device, which includes the battery 100 in one or more embodiments of the first aspect, and the battery 100 is used to provide electrical energy.

[0132] In the above solution, since the battery 100 of the first aspect has high reliability, the electrical equipment including the battery 100 of the first aspect also has high reliability.

[0133] According to some embodiments of the present application, referring to Figure 2-Figure 4 The present application provides a battery 100 , which includes a box body 11 , a plurality of battery cells 12 , a busbar 13 , a mounting assembly 14 , a wiring harness isolation plate 15 and an insulating member 16 , wherein the plurality of battery cells 12 are accommodated in the box body 11 .

[0134] The box body 11 includes an upper cover and a lower box body with an opening, the upper cover and the lower box body are buckled together to close the opening, and the lower box body is used to carry multiple battery cells 12. The insulating member 16 includes a first insulating member 161, the first insulating member 161 is sleeved on the mounting sleeve 141, and at least part of the first insulating member 161 is located between the first part 111 and the wiring harness isolation plate 15. The busbar 13 is arranged on the wiring harness isolation plate 15, and the busbar 13 is used to electrically connect multiple battery cells 12. The insulating member 16 is used to insulate and isolate the mounting assembly 14 and the busbar 13. The wiring harness isolation plate 15 is provided with a first through hole 151, and the mounting assembly 14 includes a mounting sleeve 141, and the mounting sleeve 141 is passed through the first through hole 151.

[0135] The mounting assembly 14 further includes a gasket 142 disposed between the mounting sleeve 141 and the upper cover. The first insulating member 161 covers at least a portion of the outer surface of the gasket 142 to insulate and isolate the gasket 142 from the busbar 13.

[0136] The first insulating member 161 includes a body 1611, a first flange 1612, a second flange 1613 and a clamping portion 1614. The body 1611 is annular and is located between the harness isolation plate 15 and the gasket 142. The first flange 1612 extends from the outer periphery of the body 1611 toward the direction close to the first part 111, and the first flange 1612 is arranged around the gasket 142. The second flange 1613 extends from the inner periphery of the body 1611 toward the direction away from the upper cover, and at least part of the second flange 1613 is located between the hole wall of the first through hole 151 and the outer peripheral surface of the mounting sleeve 141. A plurality of clamping portions 1614 are provided, and the clamping portions 1614 are connected to the second flange 1613, and the clamping portions 1614 are arranged at intervals along the circumferential direction of the mounting sleeve 141. Along the axial direction of the mounting sleeve 141, the first insulating member 161 abuts against the first part 111.

[0137] The insulating component 16 further includes a second insulating component 162 . The second insulating component 162 is disposed between the second portion 112 and the first insulating component 161 along the axial direction of the mounting sleeve 141 . The second insulating component 162 wraps the outer circumferential surface of the mounting sleeve 141 .

[0138] The outer circumferential surface of the mounting sleeve 141 is provided with a groove 1411, and the groove 1411 is used to limit the first insulating member 161 from moving in the axial direction of the mounting sleeve 141 in a direction away from the upper cover. The clamping portion 1614 is clamped with the groove 1411. A plurality of grooves 1411 and clamping portions 1614 are provided, and the plurality of grooves 1411 are arranged at intervals along the circumferential direction of the mounting sleeve 141, and the clamping portions 1614 correspond to the grooves 1411 one by one.

[0139] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A battery, characterized in that: include: Box; A plurality of battery cells are housed in the box; A busbar, used for electrically connecting a plurality of the battery cells; A mounting assembly is at least partially disposed in the box; An insulating component is arranged on the peripheral side of the mounting assembly, and is used to insulate and isolate the mounting assembly and the busbar.

2. The battery according to claim 1, characterized in that The battery further includes a wiring harness isolation plate, the collector is disposed on the wiring harness isolation plate, the wiring harness isolation plate is provided with a first through hole, and the mounting assembly includes a mounting sleeve, and the mounting sleeve is passed through the first through hole.

3. The battery according to claim 2, characterized in that The box body comprises a first part and a second part, at least one of the first part and the second part has an opening, the first part and the second part are mutually engaged to close the opening, and the second part is used to carry the plurality of battery cells; The insulating component includes a first insulating component, the first insulating component is sleeved on the mounting sleeve, and at least a portion of the first insulating component is located between the first portion and the wire harness isolation plate.

4. The battery according to claim 3, characterized in that The mounting assembly further includes a gasket disposed between the mounting sleeve and the first portion; The first insulating member covers at least a portion of an outer surface of the gasket to insulate and isolate the gasket from the busbar.

5. The battery according to claim 4, characterized in that The first insulating component includes a body and a first flange. The body is annular and is located between the harness isolation plate and the gasket. The first flange extends from the outer periphery of the body toward the first portion and is surrounded by the gasket.

6. The battery according to claim 5, characterized in that The first insulating component further includes a second flange, which extends from the inner periphery of the body in a direction away from the first portion, and at least a portion of the second flange is located between the hole wall of the first through hole and the outer peripheral surface of the mounting sleeve.

7. The battery according to claim 3, characterized in that The first insulating member abuts against the first portion along the axial direction of the mounting sleeve.

8. The battery according to claim 3, characterized in that The insulating component further includes a second insulating component, which is disposed between the second portion and the first insulating component along the axial direction of the mounting sleeve, and the second insulating component wraps the outer circumferential surface of the mounting sleeve.

9. The battery according to claim 3, characterized in that A limiting portion is disposed on the outer circumferential surface of the mounting sleeve, and the limiting portion is used to limit the first insulating component from moving in an axial direction of the mounting sleeve toward a direction away from the first portion.

10. The battery according to claim 9, characterized in that The limiting portion is a step surface, and the first insulating component abuts against the step surface.

11. The battery according to claim 9, characterized in that The limiting portion is a groove, and the first insulating component further includes a clamping portion, and the clamping portion is clamped with the groove.

12. The battery according to claim 11, characterized in that A plurality of the grooves and the clamping parts are provided, and the plurality of grooves are arranged at intervals along the circumference of the mounting sleeve, and the clamping parts correspond to the grooves one by one.

13. An electrical equipment, characterized in that: The invention comprises a battery as claimed in any one of claims 1 to 12, wherein the battery is used to provide electrical energy.

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