Battery and electric equipment

Abstract

The invention discloses a battery and electric equipment, and belongs to the technical field of batteries. The battery comprises a battery module and a box body, wherein the box body is provided with a mounting space; the battery module is arranged in the mounting space and is supported on the wall body of the box body; the battery module comprises a plurality of battery cells arranged along a first direction, and each battery cell comprises a shell. Wherein the shell is provided with a first positioning part, the box body is provided with a first matching part, and the first positioning part is matched with the first matching part so as to limit the movement of the battery monomer relative to the box body along a first direction. The battery has relatively high reliability.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery and an electrical device. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of this sustainable development. For electric vehicles, battery technology is a crucial factor in their development.

[0003] Improving battery reliability is a pressing issue in battery technology. Summary of the Invention

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

[0005] In a first aspect, this application provides a battery, which includes a battery module and a housing, the housing having an installation space. The battery module is disposed in the installation space and supported by the wall of the housing. The battery module includes a plurality of battery cells arranged along a first direction, and each battery cell includes a housing. The housing is provided with a first positioning portion, and the housing is provided with a first mating portion. The first positioning portion and the first mating portion cooperate to restrict the movement of the battery cells relative to the housing along the first direction.

[0006] In the technical solution of this application embodiment, the positioning between the battery module and the housing is achieved through the cooperation of the first positioning part and the first mating part, which is beneficial to improving the connection stability between the battery module and the housing, thereby improving the reliability of the battery.

[0007] In one or more embodiments of the first aspect, the housing includes a first sidewall and a second sidewall disposed opposite to each other along a second direction, wherein the battery module is located between the first sidewall and the second sidewall along the second direction, and the second direction is perpendicular to the first direction. A first mating portion is disposed on the first sidewall.

[0008] In the above scheme, the first sidewall can serve as the assembly reference for the battery module, which helps to simplify the assembly process of the battery module.

[0009] In one or more embodiments of the first aspect, along a third direction, the first positioning part is slidably engaged with the first engaging part, and the first direction, the second direction and the third direction are perpendicular to each other.

[0010] In the above solution, the first positioning part and the first mating part are matched by sliding fit, which can reduce the difficulty of assembling and separating the battery cell and the box, thereby improving the assembly and maintenance efficiency of the battery while reducing the product cost of the battery.

[0011] In one or more embodiments of the first aspect, one of the first positioning part and the first mating part is a first groove and the other is a first protrusion, and at least a portion of the first protrusion is embedded in the first groove.

[0012] In the above solution, the first positioning part and the first mating part are formed by setting the first protrusion and the first groove, which results in lower processing costs.

[0013] In one or more embodiments of the first aspect, the housing includes a support wall for supporting a single battery cell; a first groove extends in a third direction, and the end of the first groove away from the support wall has a first opening for a first protrusion to enter and exit.

[0014] In the above scheme, the presence of the first opening can play a role in pre-positioning when the first positioning part and the first mating part are engaged, thereby improving the assembly efficiency of the battery cell.

[0015] In one or more embodiments of the first aspect, a first protrusion is disposed on the housing, and a first groove is disposed on the first sidewall.

[0016] In the above solution, given that the first positioning part and the first mating part have high mating stability, forming the first positioning part by setting a first protrusion on the outer shell eliminates the need to increase the wall thickness of the outer shell, which simplifies the processing difficulty of the battery cell and reduces the manufacturing cost of the battery cell. Simultaneously, the first groove and the first sidewall share a portion of the space, which helps to improve the energy density of the battery.

[0017] In one or more embodiments of the first aspect, the first protrusion has a first end near the housing and a second end away from the housing, wherein in a first direction, the width of the second end is greater than the width of the first end. The first groove has a first notch facing the housing in a second direction, wherein in the first direction, the width of the first notch is less than the width of the bottom wall of the first groove.

[0018] In the above scheme, the width of the second end is greater than the width of the first end in the first direction, which helps to improve the fit stability of the first protrusion and the first groove. At the same time, it can also restrict the movement of the battery cell relative to the support wall in the second direction, thereby improving the assembly stability of the battery cell and the first sidewall.

[0019] In one or more embodiments of the first aspect, the first protrusion includes a first portion and a second portion arranged along a second direction, with a first end located in the first portion and a second end located in the second portion, and the width of the second portion being greater than the width of the first portion in the first direction. The first groove includes a first groove segment and a second groove segment arranged along a second direction, with a first groove opening located in the first groove segment and a bottom wall of the first groove located in the second groove segment, and the width of the second groove segment being greater than the width of the first groove segment in the first direction.

[0020] In the above scheme, the arrangement of the first part, the second part, the first groove segment, and the second groove segment can facilitate the pre-positioning of the first protrusion and the first groove in the second direction, thereby improving the assembly efficiency of the battery cell.

[0021] In one or more embodiments of the first aspect, along a first direction, a first portion has a first surface and a second surface disposed opposite to each other, and a second portion protrudes from the first surface and the second surface.

[0022] In the above solution, the width of the second part is greater than the width of the first part by protruding from the first and second surfaces, resulting in lower processing costs.

[0023] In one or more embodiments of the first aspect, a second positioning part is provided at one end of the outer casing near the second sidewall, and a second mating part is provided on the second sidewall. The second positioning part and the second mating part cooperate to restrict the movement of the battery cell relative to the support wall in the first direction.

[0024] In the above scheme, the setting of the second positioning part and the second mating part can reduce the risk of battery cell shaking and improve the assembly stability of battery cell and second sidewall.

[0025] In one or more embodiments of the first aspect, along a third direction, the second positioning part is slidably engaged with the second engaging part, and the first direction, the second direction and the third direction are perpendicular to each other.

[0026] In the above solution, the second positioning part and the second mating part are matched by sliding fit, which can improve the assembly stability of the battery cell and the second side wall, reduce the difficulty of assembling and separating the battery cell and the box, improve the assembly and maintenance efficiency of the battery, and reduce the product cost of the battery.

[0027] In one or more embodiments of the first aspect, one of the second positioning part and the second mating part is a second groove and the other is a second protrusion, and at least a portion of the second protrusion is embedded in the second groove.

[0028] In the above solution, the second positioning part and the second mating part are formed by setting a second protrusion and a second groove, which results in lower processing costs.

[0029] In one or more embodiments of the first aspect, the housing includes a support wall for supporting a battery cell, a second groove extending in a third direction, and a second opening at the end of the second groove away from the support wall for a second protrusion to enter and exit.

[0030] In the above scheme, the presence of the second opening can play a role in pre-positioning when the second positioning part and the second mating part are engaged, thereby improving the assembly efficiency of the battery cell.

[0031] In one or more embodiments of the first aspect, the battery module further includes a fixing member for restricting the movement of multiple battery cells relative to the support wall along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

[0032] In the above solution, the installation of fixing components can reduce the risk of battery cell shaking and improve the structural stability of the battery.

[0033] In one or more embodiments of the first aspect, the housing includes a support wall for supporting battery cells, and the fastener includes a body, a first end and a second end. The body extends along a first direction, and at least a portion of the body is located on the side of the plurality of battery cells opposite to the support wall. Along the first direction, the first end is located on one side of the plurality of battery cells, and the second end is located on the other side of the plurality of battery cells. Both the first end and the second end are connected to the support wall.

[0034] In the above solution, since at least a portion of the main body is located on the side of the multiple battery cells away from the support wall, and along the first direction, the first end is located on one side of the multiple battery cells and the second end is located on the other side of the multiple battery cells, the assembly of the fastener can be achieved on the side of the battery cells away from the support wall, reducing the assembly difficulty of the fastener.

[0035] In one or more embodiments of the first aspect, a first electrode terminal is provided at one end of the housing near the first sidewall. The battery also includes a first busbar component, which connects the first electrode terminals of two adjacent battery cells.

[0036] In the above scheme, the first electrode terminal and the first positioning part share a portion of the space, which is beneficial to improving the energy density of the battery.

[0037] In one or more embodiments of the first aspect, the first bus component has a first recess, and at least a portion of the first electrode terminal is located within the first recess and is interference-fitted with the first recess.

[0038] In the above scheme, the interference fit between the first recess and at least a portion of the first electrode terminal can improve the connection strength between the two, thereby improving the overcurrent stability of the current when the battery is working.

[0039] In one or more embodiments of the first aspect, the first busbar component includes a connecting portion and two busbars, the connecting portion connecting the two busbars, and a first recess disposed in the busbars.

[0040] In the above solution, the presence of the connecting portion allows for more flexible design of the positions of the two adjacent first electrode terminals, which helps reduce design costs. Simultaneously, the two first recesses facilitate pre-positioning during the assembly of the first busbar component, thereby improving the assembly efficiency of the first busbar component.

[0041] In one or more embodiments of the first aspect, a first elastic portion is provided on the inner peripheral surface of the first recess, and the first elastic portion abuts against the sidewall of the first electrode terminal.

[0042] In the above solution, the provision of the first elastic portion can improve the connection stability between the first busbar and the first electrode terminal, thereby improving the overcurrent stability of the battery during operation. It can also reduce the risk of a conductive gap existing between the first busbar and the first electrode terminal, which is beneficial to improving the reliability of the battery.

[0043] In one or more embodiments of the first aspect, the first elastic portion is integrally formed with the first recess, the inner peripheral surface of the first recess is provided with a first window, and one end of the first elastic portion is connected to the edge of the first window.

[0044] In the above solution, while ensuring high connection stability between the first busbar and the first electrode terminal, the first elastic portion is formed by opening a first window, resulting in lower processing costs. Furthermore, even when the battery cell shakes, the first electrode terminal and the first busbar can maintain a relatively tight connection.

[0045] In one or more embodiments of the first aspect, a second electrode terminal is provided at one end of the housing near the second sidewall. The battery also includes a second busbar, which connects the second electrode terminals of two adjacent battery cells.

[0046] In the above scheme, the second busbar component and the first positioning part are located on different sides of the housing, which can provide more space for the setting of the first positioning part and help reduce the assembly difficulty of the battery module.

[0047] In one or more embodiments of the first aspect, the housing includes a support wall. Two battery modules are provided, located on opposite sides of the support wall along a third direction, with the first direction, second direction, and third direction being perpendicular to each other.

[0048] In the above solution, while increasing the battery's discharge capacity, the two battery modules are located on opposite sides of the support wall, so that they do not interfere with each other during assembly and maintenance, thereby improving the battery assembly efficiency and reducing the battery maintenance cost.

[0049] In one or more embodiments of the first aspect, the support wall simultaneously supports two battery modules.

[0050] In the above solution, the support wall can serve as the load-bearing base for two battery modules simultaneously, simplifying the assembly process of the two battery modules. At the same time, it helps to save internal space of the battery and improve the energy density of the battery.

[0051] In one or more embodiments of the first aspect, the interior of the support wall has a flow channel, and a heat exchange medium for regulating the temperature of the battery module is disposed within the flow channel.

[0052] In the above scheme, the support wall serves as both a load-bearing substrate for the battery module and a heat exchange component for the battery module, which is beneficial to improving the energy density of the battery.

[0053] In one or more embodiments of the first aspect, the support wall divides the installation space into a first chamber and a second chamber, with the two battery modules respectively housed in the first chamber and the second chamber.

[0054] In the above scheme, the support wall divides the installation space into a first chamber and a second chamber, which can provide pre-set assembly space for two battery modules. The support wall serves as an assembly reference, which helps to simplify the assembly process, facilitates automated battery assembly, improves battery assembly efficiency, and also helps to simplify the battery module maintenance process and reduce maintenance costs.

[0055] In one or more embodiments of the first aspect, the housing further includes a first cover and a second cover, the first cover being connected to a first sidewall and a second sidewall. The second cover is connected to the first sidewall and the second sidewall. Along a third direction, the second cover is disposed opposite to the first cover, a support wall is located between the first cover and the second cover, one battery module is located between the first cover and the support wall, and the other battery module is located between the second cover and the support wall.

[0056] In the above solution, the first cover and / or the second cover can be detached to enable the assembly and maintenance of the two battery modules, which helps to improve assembly efficiency and reduce maintenance costs.

[0057] In one or more embodiments of the first aspect, the housing further includes a first end wall and a second end wall, which are arranged at a distance along a first direction. A support wall is located between the first end wall and the second end wall. The two ends of the first end wall are respectively connected to a first side wall and a second side wall, and the two ends of the second end wall are respectively connected to the first side wall and the second side wall. A first cover is also connected to the first end wall and the second end wall, and a second cover is also connected to the first end wall and the second end wall.

[0058] In the above solution, the box can be opened or closed simply by using the first cover and the second cover, resulting in high assembly efficiency and low maintenance costs.

[0059] In one or more embodiments of the first aspect, the first sidewall, the second sidewall, and the support wall are integrally formed, or the first sidewall and the support wall are welded together, and the second sidewall and the support wall are welded together.

[0060] In the above scheme, the integral molding of the first sidewall, the second sidewall, and the support wall can provide a high connection strength between the first sidewall, the second sidewall, and the support wall, which is beneficial to improving the structural stability of the battery; the first sidewall and the second sidewall are connected to the support wall by welding, which is beneficial to reducing the manufacturing cost of the battery.

[0061] In one or more embodiments of the first aspect, the third direction is parallel to the direction of gravity.

[0062] In one or more embodiments of the first aspect, the length of the battery cell is L, the width of the battery cell is W, and the thickness of the battery cell is H, satisfying: 4≤L / W≤12, 12≤L / H≤60.

[0063] In the above scheme, 4≤L / W≤12, 12≤L / H≤60, the battery cells have a large dimension in their length direction, and the risk of damage when the battery cells separate from the support wall is high. The first positioning part and the first mating part can significantly reduce the maintenance cost of the battery module. At the same time, the risk of battery cell wobbling is high, and the first positioning part and the first mating part can also significantly improve the assembly stability of the battery cells. In addition, the first positioning part and the first mating part can realize the positioning of the battery cells in the first direction, which significantly improves the assembly efficiency of the battery cells and reduces the assembly cost of the battery cells.

[0064] Secondly, this application provides an electrical device that includes the battery in one or more embodiments of the first aspect, the battery being used to provide electrical energy.

[0065] In the above solution, since the battery in one or more embodiments of the first aspect has high reliability, the electrical equipment including the battery in one or more embodiments of the first aspect also has high reliability.

[0066] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0067] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0068] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0069] Figure 2 Exploded views of batteries from some embodiments of this application;

[0070] Figure 3 Here are exploded views of individual battery cells from some embodiments of this application;

[0071] Figure 4 Exploded views of batteries according to other embodiments of this application;

[0072] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0073] Figure 6 This is a cross-sectional view of a partial structure of a battery cell according to some other embodiments of this application;

[0074] Figure 7 for Figure 4 A magnified view of a section at point B in the middle;

[0075] Figure 8 This is a partial schematic diagram of the second sidewall of some other embodiments of this application;

[0076] Figure 9 This is a schematic diagram of a portion of the battery structure according to other embodiments of this application;

[0077] Figure 10 This is a schematic diagram of the structure of the first busbar component in some other embodiments of this application;

[0078] Figure 11 This is a schematic diagram of a portion of the battery structure in some embodiments of this application;

[0079] Figure 12 for Figure 11 A magnified view of a section at point C;

[0080] Figure 13 This is a schematic diagram of a partial structure of the housing according to other embodiments of this application;

[0081] Figure 14 for Figure 13 A magnified view of a section at point D;

[0082] Figure 15 This is a schematic diagram of the structure of a battery cell according to other embodiments of this application.

[0083] The reference numerals in the detailed embodiments are as follows:

[0084] 1000 - Vehicle; 200 - Controller; 300 - Motor; 100 - Battery; 11 - Housing; 111 - First Housing Body; 112 - Second Housing Body; 113 - First Cover; 114 - Second Cover; 115 - First End Wall; 116 - Second Side Wall; 1161 - Second Mating Part; 1162 - Second Opening; 117 - First Side Wall; 1171 - First Mating Part; 11711 - First Opening; 118 - Second End Wall; 12 - Battery Cell; 121 - Housing; 1211 - End Cap; 1212 - Housing; 122 - Electrode Assembly; 123 - Electrode Terminal; 124 - Adapter Plate; 13 - Support Wall; 131 - Flow Channel; 14-Battery module; 1411-First positioning part; 14111-First end; 14112-Second end; 14113-First part; 14114-Second part; 1412-Second positioning part; 1413-First electrode terminal; 1414-Second electrode terminal; 142-Fixing member; 1421-First end; 1422-Second end; 1423-Main body; 161-First busbar component; 1611-First recess; 16111-First window; 1612-Bucking part; 1613-Connecting part; 1614-First elastic part; 162-Second busbar component; X-First direction; Y-Second direction; Z-Third direction. Detailed Implementation

[0085] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0086] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0087] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0088] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0089] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0090] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0091] In this application, the battery cell may include, but is 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. The shape of the battery cell may include, but is not limited to, cylinders, flat bodies, cuboids, or other shapes. According to the packaging method, the battery cell may include, but is not limited to, cylindrical battery cells, square battery cells, pouch battery cells, and blade battery cells.

[0092] In high-power applications such as electric vehicles, battery applications involve three levels: individual battery cells, battery modules, and the battery itself. A battery module is formed by electrically connecting a number of individual battery cells and placing them in a frame to protect them from external shocks, heat, vibration, etc. The battery refers to the final state of the battery system installed in an electric vehicle. The battery mentioned in the embodiments of this application refers to a single physical module comprising one or more individual battery cells to provide higher voltage and capacity. A battery generally includes a casing for encapsulating one or more individual battery cells. The casing reduces the risk of liquids or other foreign matter affecting the charging or discharging of the individual battery cells.

[0093] The following discussion will primarily focus on rectangular battery cells. It should be understood that the embodiments described below are also applicable in some respects to cylindrical battery cells, pouch cell cells, or blade cell cells.

[0094] In a typical battery cell structure, a battery cell includes a casing, electrode assemblies, and electrolyte. The casing includes end caps and a housing; the end caps close the openings of the housing to define a space for accommodating the electrode assemblies.

[0095] The electrode assembly is housed within a containment space and includes a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode plates. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, and the uncoated positive current collector protrudes beyond the coated one, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, and the uncoated negative current collector protrudes beyond the coated one, serving as the negative electrode tab. The negative current collector can be made of copper, and the negative active material can be carbon or silicon, etc. To prevent melting when carrying large currents, multiple positive tabs and multiple negative tabs are stacked together. Furthermore, the electrode assembly can be formed in various ways, including but not limited to wound or stacked configurations.

[0096] Tabs typically draw electrical energy from an electrode assembly by connecting it to a conductive element. In some cases, the conductive element is an adapter that connects the tab and the electrode terminal; in other cases, the conductive element is the electrode terminal.

[0097] Electrode terminals generally include positive and negative electrode terminals. For rectangular battery cells, the electrode terminals are typically located on the end cap. In some other cases, the electrode terminals may also be located on the casing. Multiple battery cells can be connected in series and / or parallel via electrode terminals for various applications.

[0098] The development of battery technology must take into account multiple design factors, such as reliability, cycle life, discharge capacity, charge / discharge rate, energy density and other performance parameters. In addition, the product cost of the battery also needs to be considered.

[0099] In typical batteries, individual battery cells need to be assembled onto the walls of the casing or onto internal support components using an adhesive potting method. This assembly process consumes a significant amount of adhesive, resulting in high assembly costs. Furthermore, when battery cells require maintenance, the risk of damage during disassembly is high, leading to higher maintenance costs. Consequently, the overall product cost of these batteries is relatively high.

[0100] In view of this, this application provides a battery, which includes a battery module and a housing, the housing having an installation space. The battery module is disposed in the installation space and supported by the wall of the housing. The battery module includes a plurality of battery cells arranged along a first direction, and each battery cell includes a casing. The casing is provided with a first positioning part, and the housing is provided with a first mating part. The first positioning part and the first mating part cooperate to restrict the movement of the battery cells relative to the housing along the first direction. The positioning between the battery module and the housing is achieved through the cooperation of the first positioning part and the first mating part, which helps to improve the connection stability between the battery module and the housing, thereby improving the reliability of the battery.

[0101] The technical solutions described in the embodiments of this application are applicable to the battery 100 and electrical devices using the battery 100.

[0102] Electrical equipment includes, but is not limited to: electric vehicles, electric vehicles, ships, and spacecraft, etc. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0103] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0104] For example, Figure 1 This is a schematic diagram of the structure of a vehicle 1000 according to some embodiments of this application. The vehicle 1000 can be a gasoline vehicle, a natural gas vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. The vehicle 1000 may have a motor 300, a controller 200, and a battery 100 installed inside. The controller 200 controls the battery 100 to supply power to the motor 300. For example, the battery 100 can be installed at the bottom, front, or rear of the vehicle 1000. The battery 100 can be used to power the vehicle 1000. For example, the battery 100 can serve as the operating power source for the vehicle 1000's electrical system, such as for the power requirements of starting, navigation, and operation of the vehicle 1000. In another embodiment of this application, the battery 100 can not only serve as the operating power source for the vehicle 1000 but also as the driving power source, replacing or partially replacing gasoline or natural gas to provide driving power to the vehicle 1000.

[0105] To meet different power demands, battery 100 may include multiple battery cells 12, which can be connected in series, parallel, or a combination of both. Battery 100 may also be referred to as a battery pack. Optionally, multiple battery cells 12 can first be connected in series, parallel, or a combination of both to form a battery module, and then multiple battery modules can be connected in series, parallel, or a combination of both to form battery 100. That is, multiple battery cells 12 can directly form battery 100, or they can first be formed into battery modules, and then the battery modules can be formed into battery 100.

[0106] For example, please refer to Figure 2 , Figure 2 The image shown is an exploded view of a battery 100 according to some embodiments of this application. The battery 100 may include a plurality of battery cells 12. The battery 100 may also include a housing 11, which has a hollow interior structure, and the plurality of battery cells 12 are housed within the housing 11. Figure 2 As shown, these are referred to as the first box body 111 and the second box body 112, respectively, and are fastened together. The shapes of the first box body 111 and the second box body 112 can be determined according to the shape of the combination of multiple battery cells 12. Both the first box body 111 and the second box body 112 can have an open surface. For example, both the first box body 111 and the second box body 112 can be hollow cuboids with only one open surface each. The open surfaces of the first box body 111 and the second box body 112 are arranged opposite to each other, and the first box body 111 and the second box body 112 are fastened together to form a box 11 with a closed cavity. Multiple battery cells 12 are connected in parallel, series, or mixed and placed inside the box 11 formed by the fastening of the first box body 111 and the second box body 112.

[0107] Optionally, the battery 100 may also include other structures, which will not be described in detail here. For example, the battery 100 may also include a busbar component for electrically connecting multiple battery cells 12, such as in parallel, series, or mixed connections. Specifically, the busbar component can achieve electrical connection between battery cells 12 by connecting the electrode terminals 123 of the battery cells 12. Further, the busbar component can be fixed to the electrode terminals 123 of the battery cells 12 by welding. The electrical energy of the multiple battery cells 12 can be further led out through the housing 11 via a conductive mechanism.

[0108] The number of battery cells 12 can be set to any value depending on different power requirements. Multiple battery cells 12 can be connected in series, parallel, or mixed connections to achieve a larger capacity or power. Since each battery 100 may contain a large number of battery cells 12, for ease of installation, the battery cells 12 can be grouped, with each group of battery cells 12 forming a battery module. The number of battery cells 12 included in a battery module is unlimited and can be set according to requirements. The battery 100 may include multiple battery modules, which can be connected in series, parallel, or mixed connections.

[0109] Please refer to Figure 3 As shown, Figure 3 The image shows an exploded view of a battery cell 12 according to some embodiments of this application. The battery cell 12 includes one or more electrode assemblies 122 and a housing 121. The housing 121 may include a shell 1212, and multiple walls of the shell 1212 form a cavity for accommodating the electrode assemblies 122. The shape of the shell 1212 depends on the combined shape of the one or more electrode assemblies 122. For example, the shell 1212 may be a hollow cuboid, cube, or regular polyhedron, and one face of the shell 1212 may have an opening so that one or more electrode assemblies 122 can be placed inside the shell 1212. The shell 1212 is filled with an electrolyte, such as an electrolyte solution.

[0110] The battery cell 12 may also include two electrode terminals 123, which can be disposed on an end cap 1211. The end cap 1211 is typically flat, and the two electrode terminals 123 are fixed to the flat surface of the end cap 1211. The two electrode terminals 123 are respectively a positive electrode terminal 123 and a negative electrode terminal 123. Each electrode terminal 123 is provided with a corresponding adapter piece 124, which is located between the end cap 1211 and the electrode assembly 122, for electrically connecting the electrode assembly 122 and the electrode terminal 123. In this battery cell 12, depending on actual usage requirements, the electrode assembly 122 can be configured as a single unit or multiple units, and multiple independent electrode assemblies 122 are disposed within the battery cell 12.

[0111] According to some embodiments of this application, refer to Figures 4-6 The battery 100 includes a battery module 14 and a housing 11, the housing 11 having an installation space. The battery module 14 is disposed in the installation space and supported by the wall of the housing 11. The battery module 14 includes a plurality of battery cells 12 arranged along a first direction X, and each battery cell 12 includes a housing 121. The housing 121 is provided with a first positioning part 1411, and the housing 11 is provided with a first mating part 1171. The first positioning part 1411 and the first mating part 1171 cooperate to restrict the movement of the battery cell 12 relative to the housing 11 along the first direction X.

[0112] The outer casing 121 can be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy, plastic, etc.

[0113] The first positioning part 1411 can be disposed on any wall of the outer shell 121, and the first mating part 1171 can be disposed on any wall of the housing 11.

[0114] In some embodiments, the outer casing 121 includes a housing 1212 and an end cap 1211. The housing 1212 includes a bottom wall and a side wall surrounding the bottom wall. One end of the side wall is connected to the bottom wall, and the other end of the side wall forms an opening. The end cap 1211 is used to close the opening. A first positioning portion 1411 is disposed on either the end cap 1211 or any wall of the housing 1212. In some embodiments, the outer casing 121 includes a housing 1212, a first end cap, and a second end cap. The housing 1212 includes two opposing openings. The first end cap closes one of the openings, and the second end cap closes the other opening. The first positioning portion 1411 is disposed on either the first end cap, the second end cap, or any wall of the housing 1212.

[0115] In some embodiments, the first positioning portion 1411 and the first mating portion 1171 can cooperate with each other along the second direction Y, for example, by snap-fitting, plugging, or other mating methods. In other embodiments, one of the first positioning portion 1411 and the first mating portion 1171 can deform along the second direction Y. For example, the first positioning portion 1411 includes an elastically deformable portion so that when the distance between the first sidewall 117 and the second sidewall 116 is substantially equal to the size of the battery cell 12 in the second direction Y, the battery cell 12 can be assembled with the first sidewall 117 along the second direction Y.

[0116] In some embodiments, the first positioning part 1411 and the first mating part 1171 may mat with each other along a third direction Z.

[0117] The enclosure 11 can be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy, plastic, etc.

[0118] In some instances, multiple battery modules 14 can be provided, and multiple battery modules 14 can be provided on the same side of the wall of the housing 11, and multiple battery modules 14 can be fixed together with fasteners.

[0119] The battery cell 12 may include two electrode terminals 123 with opposite polarities. The two electrode terminals 123 may be located on the same side of the housing 121 or on different sides of the housing 121.

[0120] In some embodiments, the first positioning part 1411 and the first mating part 1171 can be a snap-fit.

[0121] In some embodiments, the first positioning part 1411 and the first mating part 1171 are threaded together.

[0122] In some embodiments, the first positioning part 1411 and the first mating part 1171 are pin mating.

[0123] In some embodiments, the second direction Y is the thickness direction of the wall portion with the largest area in the wall portion of the housing 121.

[0124] In the technical solution of this application embodiment, the positioning between the battery module 14 and the housing 11 is achieved by the cooperation of the first positioning part 1411 and the first mating part 1171, which is beneficial to improve the connection stability between the battery module 14 and the housing 11, thereby improving the reliability of the battery 100.

[0125] According to some embodiments of this application, refer to Figures 4-6 The housing 11 includes a first sidewall 117 and a second sidewall 116 disposed opposite to each other along a second direction Y. The battery module 14 is located between the first sidewall 117 and the second sidewall 116 along the second direction Y, which is perpendicular to the first direction X. A first mating part 1171 is disposed on the first sidewall 117.

[0126] In some embodiments, the housing 11 includes a top wall and a bottom wall, with a first side wall 117 and a second side wall 116 disposed between the top wall and the bottom wall.

[0127] In the above scheme, the first sidewall 117 can be used as the assembly reference for the battery module 14, which helps to simplify the assembly process of the battery module 14.

[0128] According to some embodiments of this application, refer to Figures 4-6 Along the third direction Z, the first positioning part 1411 is slidably fitted to the first mating part 1171, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0129] One of the first positioning part 1411 and the first mating part 1171 can be a slide rail, and the other can be a slider.

[0130] In the above solution, the first positioning part 1411 and the first mating part 1171 are mated by sliding fit, which can reduce the difficulty of assembling and separating the battery cell 12 and the housing 11, thereby improving the assembly and maintenance efficiency of the battery 100 while reducing the product cost of the battery 100.

[0131] According to some embodiments of this application, refer to Figures 4-6 One of the first positioning part 1411 and the first mating part 1171 is a first groove and the other is a first protrusion, with at least a portion of the first protrusion embedded in the first groove.

[0132] The first protrusion and the first groove can be formed by machining or other methods.

[0133] At least a portion of the first protrusion is embedded in the first groove, meaning that the first groove can restrict the movement of the first protrusion along the first direction X, thereby restricting the movement of the battery cell 12 along the first direction X.

[0134] In the above solution, the first positioning part 1411 and the first mating part 1171 are formed by setting the first protrusion and the first groove, which results in lower processing costs.

[0135] According to some embodiments of this application, refer to Figures 4-6 The housing 11 includes a support wall 13 for supporting the battery cell 12. A first groove extends in the third direction Z, and the end of the first groove away from the support wall 13 has a first opening 11711 for a first protrusion to enter and exit.

[0136] The support wall 13 is used to support the battery cell 12, which means that the weight of the battery cell 12 is borne by the support wall 13, that is, the battery cell 12 is installed on the support wall 13.

[0137] The supporting wall 13 can be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy, plastic, etc.

[0138] In some embodiments, the end of the first groove near the support wall 13 may form an opening that mates with the first opening 11711. In other embodiments, in the third direction Z, the size of the first protrusion is greater than the minimum distance between the support wall 13 and the first groove.

[0139] In the above scheme, the presence of the first opening 11711 can play a role in pre-positioning when the first positioning part 1411 and the first mating part 1171 are engaged, thereby improving the assembly efficiency of the battery cell 12.

[0140] According to some embodiments of this application, refer to Figures 4-6 The first protrusion is provided on the outer shell 121, and the first groove is provided on the first side wall 117.

[0141] In some embodiments, the thickness of the first sidewall 117 is greater than the thickness of the wall portion of the outer casing 121. That is, the first sidewall 117 has a larger space to accommodate the other components. By setting the first groove on the first sidewall 117 and the first protrusion on the outer casing 121, it is easier to arrange the first groove and the first protrusion without increasing the thickness of the wall portion of the outer casing 121 and the thickness of the first sidewall 117.

[0142] In the above solution, given that the first positioning part 1411 and the first mating part 1171 have high mating stability, the first positioning part 1411 is formed by providing a first protrusion on the outer shell 121. This eliminates the need to increase the wall thickness of the outer shell 121, which simplifies the processing difficulty of the battery cell 12 and reduces the manufacturing cost of the battery cell 12. At the same time, the first groove and the first sidewall 117 share a portion of the space, which helps to improve the energy density of the battery 100.

[0143] According to some embodiments of this application, refer to Figures 4-6 The first protrusion has a first end 14111 near the outer casing 121 and a second end 14112 away from the outer casing 121. In the first direction X, the width of the second end 14112 is greater than the width of the first end 14111. The first groove has a first opening along the second direction Y toward the outer casing 121. In the first direction X, the width of the first opening is less than the width of the bottom wall of the first groove.

[0144] The first protrusion may include multiple parts or only one part. For example, in some embodiments, the first protrusion includes only one part and is dovetail-shaped or wedge-shaped. The first groove includes only one dovetail-shaped groove segment or wedge-shaped groove segment.

[0145] In the above scheme, in the first direction X, the width of the second end 14112 is greater than the width of the first end 14111, which is beneficial to improving the fit stability of the first protrusion and the first groove. At the same time, it can also restrict the movement of the battery cell 12 relative to the support wall 13 in the second direction Y, thereby improving the assembly stability of the battery cell 12 and the first sidewall 117.

[0146] According to some embodiments of this application, refer to Figures 4-6 The first protrusion includes a first portion 14113 and a second portion 14114 arranged along the second direction Y. A first end 14111 is located in the first portion 14113, and a second end 14112 is located in the second portion 14114. In the first direction X, the width of the second portion 14114 is greater than the width of the first portion 14113. The first groove includes a first groove segment and a second groove segment arranged along the second direction Y. A first groove opening is located in the first groove segment, and the bottom wall of the first groove is located in the second groove segment. In the first direction X, the width of the second groove segment is greater than the width of the first groove segment.

[0147] In some embodiments, the cross-section of the first protrusion may be L-shaped.

[0148] In the above scheme, the arrangement of the first part 14113, the second part 14114, the first groove segment, and the second groove segment can facilitate the pre-positioning in the second direction Y when the first protrusion and the first groove are engaged, thereby improving the assembly efficiency of the battery cell 12.

[0149] According to some embodiments of this application, refer to Figures 4-6 Along the first direction X, the first portion 14113 has a first surface and a second surface disposed opposite to each other, and the second portion 14114 protrudes from the first surface and the second surface.

[0150] The second part 14114 protrudes from the first and second surfaces and may have the same or different dimensions.

[0151] In some embodiments, the cross-section of the first protrusion is T-shaped.

[0152] In the above solution, the width of the second part 14114 is greater than the width of the first part 14113 by protruding from the first and second surfaces, resulting in lower processing costs.

[0153] According to some embodiments of this application, refer to Figure 4 , Figure 7 and Figure 8 A second positioning part 1412 is provided at one end of the outer casing near the second side wall 116, and a second mating part 1161 is provided on the second side wall 116. The second positioning part 1412 and the second mating part 1161 cooperate to restrict the movement of the battery cell 12 relative to the support wall 13 in the first direction X.

[0154] The structure of the second positioning part 1412 may be the same as or different from the structure of the first positioning part 1411, and the structure of the second mating part 1161 may be the same as or different from the structure of the first mating part 1171.

[0155] In some embodiments, in the second direction Y, the first positioning part 1411 and the second positioning part 1412 may be arranged relative to or offset from each other.

[0156] In some embodiments, the second positioning part 1412 and the second mating part 1161 can be a snap-fit ​​engagement.

[0157] In some embodiments, the second positioning part 1412 and the second mating part 1161 are threadedly mated.

[0158] In some embodiments, the second positioning part 1412 and the second mating part 1161 are pin mating.

[0159] In some embodiments, the second positioning portion 1412 and the second mating portion 1161 can cooperate with each other along the second direction Y, for example, by means of snap-fit, plug-in, or other mating methods. In other embodiments, one of the second positioning portion 1412 and the second mating portion 1161 can deform along the second direction Y. For example, the second positioning portion 1412 includes an elastically deformable portion so that when the distance between the first sidewall 117 and the second sidewall 116 is substantially equal to the size of the battery cell 12 in the second direction Y, the battery cell 12 can be assembled with the second sidewall 116 along the second direction Y.

[0160] In some embodiments, the second positioning part 1412 and the second mating part 1161 may mat with each other along a third direction Z.

[0161] In some embodiments, the outer casing 121 encloses a housing 1212 and an end cap 1211. The housing 1212 includes a bottom wall and a side wall surrounding the bottom wall. One end of the side wall is connected to the bottom wall, and the other end of the side wall forms an opening. The end cap 1211 is used to close the opening. A first positioning part 1411 is disposed on the end cap 1211, and a second positioning part 1412 is disposed on a wall portion of the housing 1212 opposite to the end cap 1211. In other embodiments, the first positioning part 1411 and the second positioning part 1412 may be disposed on two opposite walls of the housing 1212, respectively.

[0162] In some embodiments, the housing 121 includes a shell 1212, a first end cap, and a second end cap. The shell 1212 includes two opposing openings, with the first end cap closing one opening and the second end cap closing the other opening. A first positioning portion 1411 is disposed on the first end cap, and a second positioning portion 1412 is disposed on the second end cap. In other embodiments, the first positioning portion 1411 and the second positioning portion 1412 may be respectively disposed on two opposing wall portions of the shell 1212.

[0163] In the above solution, the provision of the second positioning part 1412 and the second mating part 1161 can reduce the risk of battery cell 12 shaking and improve the assembly stability of battery cell 12 and second sidewall 116.

[0164] According to some embodiments of this application, refer to Figure 4 , Figure 7 and Figure 8 Along the third direction Z, the second positioning part 1412 is slidably fitted to the second mating part 1161, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0165] One of the second positioning part 1412 and the second mating part 1161 can be a slide rail, and the other can be a slider.

[0166] In the above solution, the second positioning part 1412 and the second mating part 1161 are mated by sliding fit, which can improve the assembly stability of the battery cell 12 and the second side wall 116, reduce the assembly and separation difficulty of the battery cell 12 and the housing 11, improve the assembly and maintenance efficiency of the battery 100, and reduce the product cost of the battery 100.

[0167] According to some embodiments of this application, refer to Figure 4 , Figure 7 and Figure 8 One of the second positioning part 1412 and the second mating part 1161 is a second groove and the other is a second protrusion, with at least a portion of the second protrusion embedded in the second groove.

[0168] The second protrusion and the second groove can be formed by machining or other methods.

[0169] At least a portion of the second protrusion is embedded in the second groove, meaning that the second groove can restrict the movement of the second protrusion along the first direction X, thereby restricting the movement of the battery cell 12 along the first direction X.

[0170] In the above solution, the second positioning part 1412 and the second mating part 1161 are formed by setting a second protrusion and a second groove, which results in lower processing costs.

[0171] According to some embodiments of this application, refer to Figure 4 , Figure 7 and Figure 8 The housing 11 includes a support wall 13 for supporting the battery cell 12. A second groove extends along a third direction Z. The end of the second groove away from the support wall 13 has a second opening 1162 for the second protrusion to enter and exit.

[0172] In some embodiments, the end of the second groove near the support wall 13 may form an opening that mates with the second opening 1162. In other embodiments, in the third direction Z, the size of the second protrusion is greater than the minimum distance between the support wall 13 and the second groove.

[0173] In the above scheme, the presence of the second opening 1162 can play a role in pre-positioning when the second positioning part 1412 and the second mating part 1161 are engaged, thereby improving the assembly efficiency of the battery cell 12.

[0174] According to some embodiments of this application, refer to Figure 4 and Figure 9 The battery module 14 also includes a fixing member 142 for restricting the movement of multiple battery cells 12 relative to the support wall 13 in a third direction Z.

[0175] The fastener 142 can be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy, plastic, rubber, etc.

[0176] In some embodiments, the fastener 142 may be a fastener.

[0177] In the above scheme, the setting of the fixing member 142 can reduce the risk of battery cell 12 shaking and improve the structural stability of battery 100.

[0178] According to some embodiments of this application, refer to Figure 4 and Figure 9 The housing 11 includes a support wall 13 for supporting the battery cells 12. The fastener 142 includes a main body 1423, a first end 1421 and a second end 1422. The main body 1423 extends along a first direction X. At least a portion of the main body 1423 is located on the side of the plurality of battery cells 12 away from the support wall 13. Along the first direction X, the first end 1421 is located on one side of the plurality of battery cells 12 and the second end 1422 is located on the other side of the plurality of battery cells 12. Both the first end 1421 and the second end 1422 are connected to the support wall 13.

[0179] In some embodiments, the first end 1421 and the second end 1422 may be adhered to the support wall 13.

[0180] In some embodiments, the first end 1421 and the second end 1422 may be connected to the support wall 13 by fasteners.

[0181] In the above solution, since at least a portion of the main body 1423 is located on the side of the plurality of battery cells 12 away from the support wall 13, and along the first direction X, the first end 1421 is located on one side of the plurality of battery cells 12, and the second end 1422 is located on the other side of the plurality of battery cells 12, the fastener 142 can be assembled on the side of the battery cell 12 away from the support wall 13, reducing the assembly difficulty of the fastener 142. Furthermore, when maintaining the battery cell 12, only the fastener 142 needs to be removed to separate the battery cell 12 from the support wall 13, without damaging the battery cell 12.

[0182] According to some embodiments of this application, please refer to Figure 4 , Figures 10-12 The outer casing 121 has a first electrode terminal 1413 at one end near the first sidewall 117. The battery 100 also includes a first busbar 161, which connects the first electrode terminals 1413 of two adjacent battery cells 12.

[0183] The first busbar component 161 can be a barcode scanner, etc.

[0184] The material of the first busbar component 161 may include, but is not limited to, gold, silver, copper, aluminum, etc.

[0185] In some embodiments, the first bus component 161 is snapped into the first electrode terminal 1413.

[0186] In the above scheme, the first electrode terminal 1413 and the first positioning part 1411 share a portion of the space, which is beneficial to improving the energy density of the battery 100.

[0187] According to some embodiments of this application, please refer to Figure 4 , Figures 10-12 The first bus component 161 has a first recess 1611, and at least a portion of the first electrode terminal 1413 is located in the first recess 1611 and is interference-fitted with the first recess 1611.

[0188] The first recess 1611 can be formed by stamping or by bending.

[0189] The sidewalls of the first recess 1611 may include at least two wall portions.

[0190] At least a portion of the first electrode terminal 1413 is located within the first recess 1611 and is press-fitted with the first recess 1611. This means that a certain external force needs to be applied to insert at least a portion of the first electrode terminal 1413 into the first recess 1611, i.e., at least a portion of the first electrode terminal 1413 is tightly fitted to the inner surface of the first recess 1611. In some embodiments, because at least a portion of the first electrode terminal 1413 is located within the first recess 1611 and is press-fitted with the first recess 1611, the connection between the first electrode terminal 1413 and the first recess 1611 is relatively tight, thus eliminating the need for auxiliary connection methods such as welding. The risk of damage to either the first electrode terminal 1413 or the first busbar component 161 during disassembly or assembly is low.

[0191] In the above scheme, the interference fit between the first recess 1611 and at least a portion of the first electrode terminal 1413 can improve the connection strength between the two, thereby improving the overcurrent stability of the current when the battery 100 is working.

[0192] According to some embodiments of this application, please refer to Figure 4 , Figures 10-12 The first busbar component 161 includes a connecting portion 1613 and two busbar portions 1612. The connecting portion 1613 connects the two busbar portions 1612, and a first recess 1611 is disposed on the busbar portion 1612.

[0193] In some embodiments, the connecting portion 1613 protrudes from the busbar portion 1612.

[0194] The connecting part 1613 can be integrally formed with the busbar 1612 or formed separately.

[0195] In the above scheme, the presence of the connecting part 1613 allows for more flexible design of the positions of the two adjacent first electrode terminals 1413, which helps to reduce design costs. At the same time, the two first recesses 1611 facilitate pre-positioning during the assembly of the first busbar component 161, which helps to improve the assembly efficiency of the first busbar component 161.

[0196] According to some embodiments of this application, please refer to Figure 4 , Figures 10-12 The inner peripheral surface of the first recess 1611 is provided with a first elastic part 1614, and the first elastic part 1614 abuts against the side wall of the first electrode terminal 1413.

[0197] The number of the first elastic part 1614 can be multiple.

[0198] In some embodiments, the first elastic portion 1614 may be formed by the shape of the first recess 1611 itself. For example, the first busbar component 161 itself has a certain elastic deformation capability, and the inner peripheral surface of the first recess 1611 has a convex portion, which forms the first elastic portion 1614.

[0199] In the above solution, the provision of the first elastic part 1614 can improve the connection stability between the first busbar 161 and the first electrode terminal 1413, thereby improving the overcurrent stability of the current when the battery 100 is working. It can also reduce the risk of a conductive gap between the first busbar 161 and the first electrode terminal 1413, which is beneficial to improving the reliability of the battery 100.

[0200] According to some embodiments of this application, please refer to Figure 4 , Figures 10-12 The first elastic part 1614 and the first recess 1611 are integrally formed. The inner peripheral surface of the first recess 1611 is provided with a first window 16111. One end of the first elastic part 1614 is connected to the edge of the first window 16111.

[0201] The first window 16111 can be automatically formed by punching and shearing the peripheral wall of the first recess 1611.

[0202] Since one end of the first elastic portion 1614 is connected to the edge of the first window 16111, when the battery cell 12 shakes, the first elastic portion 1614 can be relatively displaced to balance the displacement of the first electrode terminal 1413 caused by the shaking, and the first electrode terminal 1413 will not disengage from the constraint of the first recess 1611. At the same time, the risk of excessive deformation of the first recess 1611, i.e., the first busbar component 161, is low, that is, the risk of a conductive gap appearing between the first busbar component 161 and the first electrode terminal 1413 due to deformation of the first busbar component 161 is low.

[0203] In the above solution, under the premise that the first busbar component 161 and the first electrode terminal 1413 have high connection stability, the first elastic part 1614 is formed by opening the first window 16111, resulting in low processing cost. At the same time, even when the battery cell 12 is shaken, the first electrode terminal 1413 and the first busbar component 161 can maintain a relatively tight connection.

[0204] According to some embodiments of this application, please refer to Figure 4 and Figure 7 The outer casing has a second electrode terminal 1414 at one end near the second sidewall 116. The battery 100 also includes a second busbar 162, which connects the second electrode terminals 1414 of two adjacent battery cells 12.

[0205] The second busbar component 162 can be a barcode scanner, etc.

[0206] The material of the second busbar component 162 may include, but is not limited to, gold, silver, copper, aluminum, etc.

[0207] In some embodiments, the second bus component 162 is snapped into the second electrode terminal 1414.

[0208] In some embodiments, the second electrode terminal 1414 and the second positioning part 1412 are located on the same wall of the housing, and the second electrode terminal 1414 and the second positioning part 1412 can share a portion of the space, which is beneficial to improving the energy density of the battery 100.

[0209] In some embodiments, the second bus component 162 and the first bus component 161 are located on opposite sides of the housing, which reduces the assembly difficulty of the second bus component 162 and the first bus component 161.

[0210] In the above scheme, the second busbar component 162 and the first positioning part 1411 are located on different sides of the housing, which can provide more space for the setting of the first positioning part 1411 and help reduce the assembly difficulty of the battery module 14.

[0211] According to some embodiments of this application, please refer to Figure 4 The housing 11 includes a support wall 13. Two battery modules 14 are provided, located on opposite sides of the support wall 13 along the third direction Z, with the first direction X, the second direction Y, and the third direction Z being perpendicular to each other.

[0212] In some embodiments, both battery modules 14 may be supported by support walls 13.

[0213] In some embodiments, one is supported by the support wall 13 and the other is supported by the remaining walls of the housing 11.

[0214] In some embodiments, both battery modules 14 are supported by the remaining walls of the housing, excluding the support wall 13.

[0215] In the above scheme, while increasing the discharge capacity of battery 100, the two battery modules 14 are located on both sides of the support wall 13, so that they will not affect each other during assembly and maintenance, thereby improving the assembly efficiency of battery 100 and reducing the maintenance cost of battery 100.

[0216] According to some embodiments of this application, please refer to Figure 4 The support wall 13 simultaneously supports two battery modules 14.

[0217] The support wall 13 supports both battery modules 14, meaning that the weight of both battery modules 14 is borne by the support wall 13.

[0218] In the above scheme, the support wall 13 can serve as the supporting base for two battery modules 14 at the same time, which simplifies the assembly process of the two battery modules 14. At the same time, it helps to save the internal space of the battery 100 and improve the energy density of the battery 100.

[0219] According to some embodiments of this application, please refer to Figure 4 , Figure 13 and Figure 14 The support wall 13 has a flow channel 131 inside, and a heat exchange medium for regulating the temperature of the battery module 14 is provided in the flow channel 131.

[0220] The flow channel 131 can be integrally formed with the support wall 13 or formed separately.

[0221] In some embodiments, the support wall 13 can be extruded and multiple cavities can be formed together during the forming process, and at least one cavity can serve as a flow channel 131.

[0222] The flow channel 131 is located inside the support wall 13, which means that the flow channel 131 will not occupy additional space inside the battery 100.

[0223] The heat exchange medium is generally a fluid used to regulate the temperature of the battery cells 12. This fluid can be a liquid or a gas, and temperature regulation refers to heating or cooling multiple battery cells 12. When cooling or dissipating heat from the battery cells 12, the heat exchange medium can also be called a cooling medium or cooling fluid; more specifically, it can be called a coolant or cooling gas. Alternatively, the heat exchange medium can also heat the battery cells 12. Optionally, the fluid can be circulating to achieve better temperature regulation. Optionally, the fluid can be water, a mixture of water and ethylene glycol, or air, etc.

[0224] In the above scheme, the support wall 13 serves as the supporting substrate for the battery module 14 and also as a heat exchange component for the battery module 14, which is beneficial to improving the energy density of the battery 100.

[0225] According to some embodiments of this application, please refer to Figure 4 , Figure 13 and Figure 14 The support wall 13 divides the installation space into a first chamber and a second chamber, and the two battery modules 14 are respectively housed in the first chamber and the second chamber.

[0226] In some embodiments, the first chamber and the second chamber are sealed and isolated.

[0227] In the above scheme, the support wall 13 divides the housing 11 into a first chamber and a second chamber, which can provide a preset assembly space for the two battery modules 14. The support wall 13 serves as an assembly reference, which helps to simplify the assembly process, facilitates the automated assembly of the battery 100, improves the assembly efficiency of the battery 100, and also helps to simplify the maintenance process of the battery module 14 and reduce maintenance costs.

[0228] According to some embodiments of this application, please refer to Figure 4 , Figure 13 and Figure 14 The housing 11 also includes a first cover 113 and a second cover 114. The first cover 113 is connected to a first side wall 117 and a second side wall 116. The second cover 114 is connected to the first side wall 117 and the second side wall 116. Along the third direction Z, the second cover 114 is disposed opposite to the first cover 113. A support wall 13 is located between the first cover 113 and the second cover 114. One battery module 14 is located between the first cover 113 and the support wall 13, and the other battery module 14 is located between the second cover 114 and the support wall 13.

[0229] The first cover 113 and the second cover 114 can be connected to the first side wall 117 and the second side wall 116 by means of welding, bonding, fastener connection, etc.

[0230] The battery module 14 can be assembled and maintained by detaching the first cover 113 and / or the second cover 114.

[0231] In the above solution, the first cover 113 and / or the second cover 114 can be detached to realize the assembly and maintenance of the two battery modules 14, which is conducive to improving assembly efficiency and reducing maintenance costs.

[0232] According to some embodiments of this application, please refer to Figure 4 , Figure 13 and Figure 14The housing 11 also includes a first end wall 115 and a second end wall 118, which are arranged at intervals along a first direction X. A support wall 13 is located between the first end wall 115 and the second end wall 118. The two ends of the first end wall 115 are respectively connected to the first side wall 117 and the second side wall 116, and the two ends of the second end wall 118 are respectively connected to the first side wall 117 and the second side wall 116. The first cover 113 is also connected to the first end wall 115 and the second end wall 118, and the second cover 114 is also connected to the first end wall 115 and the second end wall 118.

[0233] The first cover 113 and the second cover 114 can be connected to the first end wall 115 and the second end wall 118 by means of welding, bonding, fastener connection, etc.

[0234] In some embodiments, the outer surfaces of the first end wall 115, the second end wall 118, the first side wall 117, and the second side wall 116 are the outer surfaces of the housing 11.

[0235] In the above solution, the box 11 can be opened or closed simply by using the first cover 113 and the second cover 114, resulting in high assembly efficiency and low maintenance costs.

[0236] According to some embodiments of this application, please refer to Figure 4 , Figure 13 and Figure 14 The first sidewall 117, the second sidewall 116 and the support wall 13 are integrally formed, or the first sidewall 117 and the support wall 13 are welded together, and the second sidewall 116 and the support wall 13 are welded together.

[0237] In some embodiments, the first sidewall 117, the second sidewall 116, and the support wall 13 can be integrally formed by an extrusion process. In some embodiments, the first sidewall 117 and the support wall 13 can be connected by friction stir welding, and the second sidewall 116 and the support wall 13 can be connected by friction stir welding.

[0238] In the above scheme, the first sidewall 117, the second sidewall 116 and the support wall 13 are integrally formed, which can give the first sidewall 117, the second sidewall 116 and the support wall 13 a high connection strength, which is beneficial to improving the structural stability of the battery 100; the first sidewall 117 and the second sidewall 116 are connected to the support wall 13 by welding, which is beneficial to reducing the manufacturing cost of the battery 100.

[0239] According to some embodiments of this application, please refer to Figure 4 , Figure 13 and Figure 14 The third direction Z is parallel to the direction of gravity.

[0240] According to some embodiments of this application, please refer to Figure 4 and Figure 15 The length of the battery cell 12 is L, the width of the battery cell 12 is W, and the thickness of the battery cell 12 is H, satisfying: 4≤L / W≤12, 12≤L / H≤60.

[0241] The ratio of the length to the width of the battery cell 12 can be any value greater than or equal to 4 and less than or equal to 12, for example, 4, 5, 6, 7, 8, 9, 10, 11, 12.

[0242] The ratio of the length to the thickness of the battery cell 12 can be any value greater than or equal to 12 and less than or equal to 60, for example, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60.

[0243] A battery cell 12 with a length-to-width ratio greater than or equal to 4 and less than or equal to 12, and a length-to-thickness ratio greater than or equal to 12 and less than or equal to 60, has a blade-like shape and can be called a blade battery cell 12. If potting is used during assembly, the amount of adhesive used is relatively large, and the battery cell 12 is more easily damaged during disassembly.

[0244] In the above scheme, 4≤L / W≤12, 12≤L / H≤60, and the battery cell 12 has a large dimension in its length direction. The risk of damage when the battery cell 12 separates from the support wall 13 is high. The provision of the first positioning part 1411 and the first mating part 1171 can significantly reduce the maintenance cost of the battery module 14. Simultaneously, the risk of battery cell 12 shaking is high, and the provision of the first positioning part 1411 and the first mating part 1171 can also significantly improve the assembly stability of the battery cell 12. Furthermore, the first positioning part 1411 and the first mating part 1171 can achieve the positioning of the battery cell 12 in the first direction X, significantly improving the assembly efficiency of the battery cell 12 and reducing the assembly cost of the battery cell 12.

[0245] According to some embodiments of this application, please refer to Figure 1 This application provides an electrical device that includes the battery 100 in one or more of the above embodiments, the battery 100 being used to provide electrical energy.

[0246] In the above solutions, since the battery 100 in one or more of the above embodiments has high reliability, the electrical equipment including the battery 100 in one or more of the above embodiments also has high reliability.

[0247] According to some embodiments of this application, please refer to Figures 4-15 This application provides a battery 100, which includes two battery modules 14 and a housing 11. The housing 11 has an installation space and includes a support wall 13 and a first side wall 117 and a second side wall 116 disposed opposite each other along a second direction Y. Along the second direction Y, the support wall 13 is located between the first side wall 117 and the second side wall 116, and the first side wall 117, the second side wall 116, and the support wall 13 are integrally formed. The support wall 13 divides the installation space into a first chamber and a second chamber, with one battery module 14 disposed in the first chamber and the other battery module 14 disposed in the second chamber. The interior of the support wall 13 has a flow channel 131, and a heat exchange medium for regulating the temperature of the battery module 14 is disposed within the flow channel 131.

[0248] The battery module 14 includes a plurality of battery cells 12 arranged along a first direction X, and each battery cell 12 includes a housing 121. Along a third direction Z, two battery modules 14 are respectively located on both sides of a support wall 13. The support wall 13 is used to support the two battery modules 14.

[0249] The housing 11 also includes a first cover 113 and a second cover 114, as well as a first end wall 115 and a second end wall 118. The first cover 113 is connected to the first side wall 117 and the second side wall 116. The second cover 114 is connected to the first side wall 117 and the second side wall 116. Along the third direction Z, the second cover 114 is disposed opposite to the first cover 113, and a support wall 13 is located between the first cover 113 and the second cover 114. One battery module 14 is located between the first cover 113 and the support wall 13, and the other battery module 14 is located between the second cover 114 and the support wall 13. The housing 11 also includes a first end wall 115 and a second end wall 118 arranged at intervals along a first direction X. A support wall 13 is located between the first end wall 115 and the second end wall 118. The two ends of the first end wall 115 are respectively connected to the first side wall 117 and the second side wall 116, and the two ends of the second end wall 118 are respectively connected to the first side wall 117 and the second side wall 116. The third direction Z, the second direction Y, and the first direction X are perpendicular to each other. The first cover 113 is also connected to the first end wall 115 and the second end wall 118, and the second cover 114 is also connected to the first end wall 115 and the second end wall 118.

[0250] The first direction X, the second direction Y, and the third direction Z are all perpendicular to each other, with the third direction Z being the direction of gravity.

[0251] A first positioning part 1411 is provided at one end of the outer casing 121 near the first side wall 117, and a first mating part 1171 is provided at the first side wall 117. The first positioning part 1411 and the first mating part 1171 are mated together. A second positioning part 1412 is provided at one end of the outer casing near the second side wall 116, and a second mating part 1161 is provided at the second side wall 116. The second positioning part 1412 and the second mating part 1161 are mated together to restrict the movement of the battery cell 12 relative to the support wall 13 in the first direction X.

[0252] A first protrusion is disposed on the outer casing 121, and a first groove is disposed on the first sidewall 117. At least a portion of the first protrusion is embedded in the first groove. The first groove extends along a third direction Z, and the end of the first groove away from the support wall 13 has a first opening 11711 for the first protrusion to enter and exit. The first protrusion includes a first portion 14113 and a second portion 14114 arranged along a second direction Y. The first end 14111 is located in the first portion 14113, and the second end 14112 is located in the second portion 14114. In the first direction X, the width of the second portion 14114 is greater than the width of the first portion 14113. The first groove includes a first groove segment and a second groove segment arranged along the second direction Y. The first groove opening is located in the first groove segment, and the bottom wall of the first groove is located in the second groove segment. In the first direction X, the width of the second groove segment is greater than the width of the first groove segment. Along the first direction X, the first portion 14113 has a first surface and a second surface disposed opposite to each other, and the second portion 14114 protrudes from the first surface and the second surface.

[0253] The battery module 14 also includes a fixing member 142 for restricting the movement of multiple battery cells 12 relative to the support wall 13 in a third direction Z. The fixing member 142 includes a body 1423, a first end 1421 and a second end 1422. The body 1423 extends in a first direction X, and at least a portion of the body 1423 is located on the side of the multiple battery cells 12 away from the support wall 13. In the first direction X, the first end 1421 is located on one side of the multiple battery cells 12, and the second end 1422 is located on the other side of the multiple battery cells 12. Both the first end 1421 and the second end 1422 are connected to the support wall 13.

[0254] A first electrode terminal 1413 is provided at one end of the outer casing 121 near the first sidewall 117. The battery 100 also includes a first busbar component 161, which connects the first electrode terminals 1413 of two adjacent battery cells 12. The first busbar component 161 has a first recess 1611, and at least a portion of the first electrode terminal 1413 is located within the first recess 1611 and is press-fitted with the first recess 1611. The first busbar component 161 includes a connecting portion 1613 and two busbar portions 1612. The connecting portion 1613 connects the two busbar portions 1612, and the first recess 1611 is disposed in the busbar portion 1612. A first elastic portion 1614 is protruding from the inner peripheral surface of the first recess 1611, and the first elastic portion 1614 abuts against the sidewall of the first electrode terminal 1413. The first elastic part 1614 is integrally formed with the first recess 1611. The inner peripheral surface of the first recess 1611 is provided with a first window 16111. One end of the first elastic part 1614 is connected to the edge of the first window 16111.

[0255] A second electrode terminal 1414 is provided at one end of the outer casing 121 near the second sidewall 116. The battery 100 also includes a second busbar 162, which connects the second electrode terminals 1414 of two adjacent battery cells 12.

[0256] Taking the maintenance of battery cell 12 in battery 100 as an example, since the first electrode terminal 1413 and the second electrode terminal 1414 of battery cell 12 are not connected to the first busbar component 161 and the second busbar component 162 by welding, but by interference fit, and the battery cell 12 is not connected to the support wall 13 by adhesive, it is only necessary to open the first cover 113, remove the fixing piece 142, and separate the electrode terminal 123 and the busbar component connected to it to remove the battery cell 12 for maintenance. The battery cell 12 is basically undamaged, which significantly reduces the maintenance cost of battery 100. At the same time, the connection between battery cell 12 and casing 11 is also more stable, which helps to improve the connection stability between battery cell 12 and casing 11, thereby improving the reliability of battery 100.

[0257] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, characterized by, The application relates to a battery module and a battery pack. The battery module comprises: a box body having a mounting space; a battery module arranged in the mounting space and supported on a wall of the box body; the battery module comprises a plurality of battery cells arranged along a first direction, and the battery cells comprise a shell; 2. The battery of claim 1, wherein, wherein the shell is provided with a first positioning part, the box body is provided with a first matching part, and the first positioning part and the first matching part are matched to limit movement of the battery cell relative to the box body along the first direction. The box body comprises a first side wall and a second side wall oppositely arranged along a second direction, and the battery module is located between the first side wall and the second side wall along the second direction, and the second direction is perpendicular to the first direction; 3. The battery of claim 2, wherein, the first matching part is arranged on the first side wall.

4. The battery of claim 2, wherein, Along a third direction, the first positioning part is slidably matched with the first matching part, and the first direction, the second direction and the third direction are perpendicular to each other.

5. The battery of claim 4, wherein, One of the first positioning part and the first matching part is a first recess, and the other is a first protrusion, and at least a part of the first protrusion is embedded in the first recess. The box body comprises a support wall for bearing the battery cell; 6. The battery of claim 4, wherein, the first recess extends along the third direction, and an end of the first recess away from the support wall has a first opening for the first protrusion to enter and exit, and the first direction, the second direction and the third direction are perpendicular to each other.

7. The battery of claim 4, wherein, The first protrusion is arranged on the shell, and the first recess is arranged on the first side wall. The first protrusion has a first end close to the shell and a second end away from the shell, and in the first direction, the width of the second end is greater than that of the first end; 8. The battery of claim 7, wherein, the first recess has a first slot opening towards the shell along the second direction, and in the first direction, the width of the first slot opening is smaller than that of the bottom wall of the first recess. The first protrusion comprises a first part and a second part arranged along the second direction, the first end is located in the first part, and the second end is located in the second part, and in the first direction, the width of the second part is greater than that of the first part; 9. The battery of claim 8, wherein, the first recess comprises a first slot segment and a second slot segment arranged along the second direction, the first slot opening is located in the first slot segment, and the bottom wall of the first recess is located in the second slot segment, and in the first direction, the width of the second slot segment is greater than that of the first slot segment.

10. The battery of claim 2, wherein, Along the first direction, the first part has a first surface and a second surface oppositely arranged, and the second part protrudes from the first surface and the second surface.

11. The battery of claim 10, wherein, The shell is provided with a second positioning part at an end close to the second side wall, the second side wall is provided with a second matching part, and the second positioning part and the second matching part are matched to limit movement of the battery cell relative to the box body along the first direction. Along a third direction, the second positioning part is slidably matched with the second matching part, and the first direction, the second direction and the third direction are perpendicular to each other.

12. The battery of claim 10, wherein, One of the second positioning part and the second matching part is a second recess, and the other is a second protrusion, at least a part of the second protrusion is embedded in the second recess.

13. The battery of claim 12, wherein, The box body comprises a support wall for bearing the battery monomers; The second recess extends along a third direction, and an end of the second recess away from the support wall has a second opening for the second protrusion to enter and exit, and the first direction, the second direction and the third direction are perpendicular to each other.

14. The battery of claim 2, wherein, The battery module further comprises a fixing member for limiting the movement of the plurality of battery monomers relative to the box body along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

15. The battery of claim 14, wherein, The box body comprises a support wall for bearing the battery monomers; The fixing member comprises a main body, a first end portion and a second end portion, the main body extends along the first direction, at least a part of the main body is located on a side of the plurality of battery monomers away from the support wall, along the first direction, the first end portion is located on one side of the plurality of battery monomers, and the second end portion is located on the other side of the plurality of battery monomers, and the first end portion and the second end portion are connected to the support wall.

16. The battery of claim 2, wherein, The shell is provided with a first electrode terminal at an end close to the first side wall; The battery further comprises a first busbar component connected to the first electrode terminals of two adjacent battery monomers.

17. The battery of claim 16, wherein, The first busbar component has a first recess, and at least a part of the first electrode terminal is located in the first recess and is in interference fit with the first recess.

18. The battery of claim 17, wherein, The first busbar component comprises a connecting portion and two busbar portions, the connecting portion connects the two busbar portions, and the first recess is arranged in the busbar portion.

19. The battery of claim 17, wherein, The inner circumferential surface of the first recess is provided with a first elastic portion, and the first elastic portion abuts against the side wall of the first electrode terminal.

20. The battery of claim 19, wherein, The first elastic portion is integrally formed with the first recess, the inner circumferential surface of the first recess is provided with a first window, and one end of the first elastic portion is connected to the edge of the first window.

21. The battery of claim 2, wherein, The shell is provided with a second electrode terminal at an end close to the second side wall; The battery further comprises a second busbar component connected to the second electrode terminals of two adjacent battery monomers.

22. The battery of claim 2, wherein, The box body comprises a support wall; The battery module is provided with two, along a third direction, two battery modules are respectively located on both sides of the support wall, and the first direction, the second direction and the third direction are perpendicular to each other.

23. The battery of claim 22, wherein The support wall bears two battery modules at the same time.

24. The battery of any one of claims 5, 15, 22 and 23, wherein The inner part of the support wall has a flow channel, and a heat exchange medium for adjusting the temperature of the battery module is arranged in the flow channel.

25. The battery of claim 22 or 23, wherein, The support wall divides the mounting space into a first chamber and a second chamber, and two battery modules are respectively accommodated in the first chamber and the second chamber.

26. The battery of claim 25, wherein, The box body further comprises: A first cover connected to the first side wall and the second side wall; A second cover body connected to the first side wall and the second side wall; In the third direction, the second cover body is arranged opposite to the first cover body, and the support wall is located between the first cover body and the second cover body, one of the battery modules is located between the first cover body and the support wall, and the other battery module is located between the second cover body and the support wall.

27. The battery of claim 26, wherein, The box further comprises: A first end wall and a second end wall, the first end wall and the second end wall are arranged in a first direction, the support wall is located between the first end wall and the second end wall, and two ends of the first end wall are connected to the first side wall and the second side wall respectively, and two ends of the second end wall are connected to the first side wall and the second side wall respectively; The first cover body is further connected to the first end wall and the second end wall, and the second cover body is further connected to the first end wall and the second end wall.

28. The battery according to any one of claims 5, 15, 22 and 23, wherein The first side wall, the second side wall and the support wall are integrally formed; Or, the first side wall and the support wall are welded, and the second side wall and the support wall are welded.

29. The battery of any one of claims 3, 5, 11, 13, 14, 22, and 26, wherein, The third direction is parallel to the direction of gravity.

30. The battery according to claim 1, wherein The length of the battery cell is L, the width of the battery cell is W, and the thickness of the battery cell is H, and 4≤L / W≤12 and 12≤L / H≤60 are satisfied.

31. An electrical device, comprising: The battery cell according to any one of claims 1-30.

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