Battery, battery monomer and power utilization device

Abstract

The utility model belongs to the technical field of battery sampling, and particularly relates to a battery, battery monomers and a power utilization device, the battery comprises a battery unit and a sampling assembly, the battery unit comprises a plurality of columns of battery monomers arranged along a first direction, and each column of battery monomers comprises a plurality of battery monomers arranged along a second direction; the battery monomer is provided with a pressure relief mechanism, electrode terminals and a first side wall along a third direction, and the electrode terminals comprise a first electrode terminal and a second electrode terminal; the first electrode terminal, the second electrode terminal and the pressure relief mechanism are sequentially arranged on the first side wall at intervals; or, the first electrode terminal and the second electrode terminal are arranged on the first side wall at an interval, and the pressure relief mechanism is arranged on the other side walls of the battery monomer; the sampling assembly comprises an electric connecting piece electrically connected with the electrode terminals and a sampling piece, the sampling piece is arranged between the electrode terminals of every two adjacent rows of battery monomers, and the two rows of battery monomers can share one sampling piece, so that the number of the sampling pieces is reduced, and the manufacturing cost of the battery is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of battery sampling, and particularly relates to a battery, a battery cell, and an electrical device. Background Art

[0002] Energy conservation and emission reduction are crucial for the sustainable development of the automotive industry. In this context, electric vehicles have become a core part of the sustainable development of the automotive industry due to their energy-saving and environmental protection characteristics. However, for electric vehicles, battery technology is a key factor affecting their development.

[0003] A battery usually includes multiple battery cells. To understand the operating status of each battery cell, a column of battery cells can be correspondingly connected to one sampling component of a sampling piece to obtain the operating data of each battery cell; however, the cost of the sampling piece is high; in the case where there are multiple columns of battery cells, the number of sampling pieces is large, resulting in a high manufacturing cost of the battery.

[0004] The above statements are only used to provide background technical information related to this application, and do not necessarily constitute prior art. Summary of the Utility Model

[0005] The purpose of the embodiments of this application is to provide a battery, a battery cell, and an electrical device, including but not limited to solving the problems of a large number of sampling pieces and high battery cost in related technologies.

[0006] The technical solutions adopted in the embodiments of this application are as follows:

[0007] In a first aspect, a battery is provided. The battery includes a battery unit and a sampling component. The battery unit includes multiple columns of battery cells arranged along a first direction, and each column of battery cells includes multiple battery cells arranged along a second direction; the battery cell has a pressure relief mechanism, electrode terminals, and a first sidewall along a third direction. The electrode terminals include a first electrode terminal and a second electrode terminal with different polarities; the first electrode terminal, the second electrode terminal, and the pressure relief mechanism are spaced along the first direction on the first sidewall, and the second electrode terminal is located between the first electrode terminal and the pressure relief mechanism; alternatively, the first electrode terminal and the second electrode terminal are spaced along the first direction on the first sidewall, and the pressure relief mechanism is provided on other sidewalls of the battery cell; wherein, the first direction and the second direction intersect, and the third direction is perpendicular to the first direction and the second direction; the sampling component includes an electrical connection member and a sampling piece for electrically connecting with the electrical connection member. The electrode terminals of adjacent two battery cells are connected through the electrical connection member, and a sampling piece is provided between the electrode terminals of every two adjacent columns of battery cells.

[0008] In the battery according to the embodiment of the present application, since the second electrode terminal of the battery cell is located between the first electrode terminal and the pressure relief mechanism, or the first electrode terminal and the second electrode terminal are located on the first side wall of the battery cell, and the pressure relief mechanism is located on other side walls of the battery cell, the distance between the first electrode terminal and the second electrode terminal can be set to be relatively small, thereby reducing the distance between the electrical connection member and the sampling member and reducing the sampling distance of the sampling member. Therefore, two columns of battery cells can share one sampling member, thereby reducing the number of sampling members and lowering the manufacturing cost of the battery.

[0009] In some embodiments, in the same column of battery cells, two adjacent battery cells are respectively a first battery cell and a second battery cell. The second electrode terminal of the first battery cell is disposed opposite to the second electrode terminal of the second battery cell. The first electrode terminal of the first battery cell is located on one side of the second electrode terminal of the first battery cell, and the first electrode terminal of the second battery cell is located on the other side of the second electrode terminal of the first battery cell.

[0010] By adopting the technical solution of this embodiment, the second electrode terminals of the first battery cell and the second battery cell are disposed opposite to each other. In this way, the distance between the electrical connection member connected to the second electrode terminal and the sampling member is relatively close, reducing the sampling distance of the sampling member and facilitating two adjacent columns of battery cells to share one sampling member.

[0011] In some embodiments, the end of the electrical connection member close to the sampling member is connected to the sampling member.

[0012] By adopting the technical solution of this embodiment, the wiring distance and the sampling distance between the electrical connection member and the sampling member can be reduced, and the sampling wiring distance and the sampling distance are reduced.

[0013] In some embodiments, the second electrode terminal is located at the middle position of the first side wall in the first direction.

[0014] By adopting the technical solution of this embodiment, the battery unit can adopt the same type of battery cells, which is beneficial to reducing the manufacturing cost.

[0015] In some embodiments, in the same column of battery cells, two adjacent battery cells are respectively a first battery cell and a second battery cell. The first electrode terminal of the first battery cell is disposed opposite to the second electrode terminal of the second battery cell, and the second electrode terminal of the first battery cell is disposed opposite to the first electrode terminal of the second battery cell.

[0016] By adopting the technical solution of this embodiment, the electrode terminals of the battery cells are arranged regularly, which is convenient for the installation of the electrical connection members.

[0017] In some embodiments, the first electrode terminal and the second electrode terminal are symmetrically disposed with respect to the bisector of the first side wall in the first direction.

[0018] By adopting the technical solution of this embodiment, the battery cells can adopt the same type of battery monomers, which is beneficial to reducing the manufacturing cost.

[0019] In some embodiments, in the same column of battery monomers, two adjacent battery monomers are respectively a first battery monomer and a second battery monomer, and the electrode terminals of the first battery monomer and the electrode terminals of the second battery monomer are arranged close to the sampling member; the first electrode terminal of the first battery monomer and the first electrode terminal of the second battery monomer are arranged opposite to each other, and the second electrode terminal of the second battery monomer and the second electrode terminal of the second battery monomer are arranged opposite to each other.

[0020] By adopting the technical solution of this embodiment, the arrangement of the electrode terminals of the battery monomers is regular, which is convenient for the installation of the electrical connectors.

[0021] In some embodiments, the polarities of the first electrode terminal of the first battery monomer and the first electrode terminal of the second battery monomer are the same; or, the polarities of the first electrode terminal of the first battery monomer and the first electrode terminal of the second battery monomer are different.

[0022] By adopting the technical solution of this embodiment, different battery monomers can be flexibly selected for the battery monomers to facilitate the connection of the electrical connectors and reduce the manufacturing cost of the battery.

[0023] In some embodiments, the first sidewall has a first side edge and a second side edge that are spaced apart in a first direction, and the first electrode terminal is located between the second electrode terminal and the first side edge; the distance between the first side edge and the second side edge is L, and the distance between the second electrode terminal and the first side edge is L 1 , where 0.2 ≤ L 1 / L ≤ 0.5.

[0024] By adopting the technical solution of this embodiment, it is beneficial to reduce the sampling distance and can also reduce the short - circuit risk of the battery monomers.

[0025] In some embodiments, 0.35 ≤ L 1 / L ≤ 0.45.

[0026] By adopting the technical solution of this embodiment, the sampling distance can be better reduced, and the short - circuit risk of the battery monomers can also be better reduced.

[0027] In some embodiments, the pressure - relief mechanism is arranged on the first sidewall, the second electrode terminal is located between the first electrode terminal and the pressure - relief mechanism, the first sidewall has a first side edge and a second side edge that are spaced apart in a first direction, and the first electrode terminal is located between the second electrode terminal and the first side edge; the distance between the first side edge and the second side edge is L, and the distance between the second electrode terminal and the pressure - relief mechanism is L 2 , where 0.5 ≤ L2 / L ≤ 2 / 3.

[0028] By adopting the technical solution of this embodiment, the risk of electrical connection and conduction between the electrical connector and the first side wall can be reduced, and the short - circuit risk of the battery cell can also be reduced, which is beneficial to improving the reliability of battery use.

[0029] In some embodiments, 0.55 ≤ L 2 / L ≤ 0.65.

[0030] By adopting the technical solution of this embodiment, the risk of electrical connection and conduction between the electrical connector and the first side wall can be better reduced, and the short - circuit risk of the battery cell can also be better reduced, which is beneficial to improving the reliability of battery use.

[0031] In some embodiments, the pressure - relief mechanism is arranged on the first side wall, the second electrode terminal is located between the first electrode terminal and the pressure - relief mechanism, and in the same column of battery cells, the pressure - relief mechanisms of the battery cells are arranged staggeredly.

[0032] By adopting the technical solution of this embodiment, the pressure - relief mechanisms are arranged staggeredly, which can increase the distance between the pressure - relief mechanisms of two adjacent battery cells. In this way, the high - temperature impact and the ejected particulate matter after the pressure - relief mechanism is opened on the pressure - relief mechanism of the adjacent battery cell can be reduced, and the risk of the pressure - relief mechanism of the adjacent battery cell being melted through can be reduced, which is beneficial to improving the reliability of battery cell use.

[0033] In some embodiments, multiple battery cells are connected in series through electrical connectors.

[0034] By adopting the technical solution of this embodiment, the battery cells are connected in series, and the electrical connection operation between the battery cells is simple, which is beneficial to reducing the manufacturing cost of the battery cells.

[0035] In some embodiments, the sampling member extends along the second direction.

[0036] By adopting the technical solution of this embodiment, the sampling member can be correspondingly arranged with the battery cells in two adjacent columns of battery cells, which is beneficial to reducing the connection distance between the electrical connector and the sampling member.

[0037] In some embodiments, the sampling member includes at least one of a flexible circuit board and a rigid circuit board.

[0038] By adopting the technical solution of this embodiment, different types of sampling members can be selected according to the actual situation, making the setting of the sampling member more flexible and more practical.

[0039] In some embodiments, the battery cell has a second side wall opposite to the first side wall, and the pressure - relief mechanism is arranged on the second side wall.

[0040] By adopting the technical solution of this embodiment, the pressure relief mechanism is arranged on the second side wall. In this way, the particulate matter ejected when the pressure relief mechanism on the second side wall is opened is not easily in contact with the electrical connector, the electrode terminal and the sampling member, thereby reducing the risk of damage to the electrical connector, the electrode terminal and the sampling member, and being beneficial to improving the use reliability of the battery.

[0041] In some embodiments, the battery cell is provided with a temperature sensor for acquiring temperature information, and the temperature sensor is connected to the sampling member.

[0042] By adopting the technical solution of this embodiment, the sampling member cooperates with the temperature sensor to further acquire the temperature signal of the battery cell, so as to conveniently monitor the operating state of the battery cell more comprehensively, and be beneficial to improving the use reliability of the battery.

[0043] In a second aspect, a battery cell is provided. The battery cell includes a housing and an electrode assembly. The housing has a first side wall, and the first side wall is provided with a pressure relief mechanism and a first electrode terminal and a second electrode terminal with different polarities. The second electrode terminal is located between the first electrode terminal and the pressure relief mechanism; the electrode assembly is located inside the housing, and the first electrode terminal and the second electrode terminal are electrically connected to the electrode assembly to realize the input and output of electric energy.

[0044] In the battery cell of the embodiment of the present application, the second electrode terminal is located between the pressure relief mechanism and the first electrode terminal, so that the distance between the first electrode terminal and the second electrode terminal can be set to be smaller, so as to facilitate sharing a sampling member by two adjacent rows of battery cells, thereby reducing the manufacturing cost of the battery.

[0045] In a third aspect, an electrical device is provided. The electrical device includes the battery as described in the above embodiment; and / or, the battery cell as described in the above embodiment.

[0046] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the specific embodiments of the present application are specifically described below. Description of the Drawings

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0048] Figure 1 It is a schematic structural diagram of a vehicle provided for some embodiments of the present application.

[0049] Figure 2 Exploded view of the battery provided for some embodiments of the present application.

[0050] Figure 3 Schematic structural view of the battery provided for other embodiments of the present application.

[0051] Figure 4 For Figure 3 Schematic structural view of the battery cell in

[0052] Figure 5 Schematic structural view of the battery cell provided for some embodiments of the present application.

[0053] Figure 6 For Figure 5 Exploded view of the battery cell in

[0054] Figure 7 Schematic structural view of the battery provided for yet other embodiments of the present application.

[0055] Figure 8 For Figure 7 Schematic structural view of the battery cell in

[0056] Figure 9 Schematic structural view of the battery provided for yet other embodiments of the present application.

[0057] Figure 10 For Figure 9 Schematic structural view of the battery cell in

[0058] Figure 11 Schematic structural view of the battery provided for yet other embodiments of the present application.

[0059] Figure 12 For Figure 11 Schematic structural view of the battery cell in

[0060] Figure 13 Schematic structural view of the battery provided for yet other embodiments of the present application.

[0061] Among them, each reference numeral in the figure:

[0062] 1000, Vehicle; 1100, Battery; 1200, Controller; 1300, Motor; 1, Battery Cell; 10, Battery Monomer; 10a, First Battery Monomer; 10b, Second Battery Monomer; 11, Housing; 111, End Cap; 1111, First Side Wall; 11111, First Side Edge; 11112, Second Side Edge; 112, Housing Body; 1121, Second Side Wall; 12, Pressure Relief Mechanism; 13, Electrode Terminal; 131, First Electrode Terminal; 132, Second Electrode Terminal; 14, Electrode Assembly; 141, Tab; 15, Temperature Sensor; 2, Sampling Assembly; 21, Electrical Connector; 22, Sampling Component; 3, Box; 31, First Part; 32, Second Part; 4, Battery Management Module. Detailed Embodiment

[0063] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0065] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0066] Reference to "embodiment" herein means that a particular feature, structure or characteristic described in connection with the embodiment may be included in at least some embodiments of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments in any suitable manner.

[0067] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0068] In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces). The meaning of "several" is one or more, unless otherwise specifically defined.

[0069] In the description of the embodiments of the present application, for technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0070] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0071] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0072] At present, from the perspective of the development of the market situation, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydroelectric, thermal, wind, and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in many fields such as military equipment and aerospace. With the continuous expansion of the application fields of power batteries, the market demand is also constantly increasing.

[0073] Energy conservation and emission reduction are crucial for the sustainable development of the automotive industry. In this context, electric vehicles, due to their energy-saving and environmental protection characteristics, have become the core part of the sustainable development of the automotive industry. However, for electric vehicles, battery technology is a key factor affecting their development.

[0074] A battery usually includes a sampling component and a plurality of battery cells. The side wall of the battery cell is provided with a first electrode terminal, a second electrode terminal, and a pressure relief mechanism. The first electrode terminal and the second electrode terminal are used to be electrically connected to an electrical connection member in the sampling component to achieve electrical connection between the plurality of battery cells; the pressure relief mechanism is used to release the pressure inside the battery cell to improve the use reliability of the battery; but the pressure relief mechanism is arranged between the first electrode terminal and the second electrode terminal, resulting in a large distance between the first electrode terminal and the second electrode terminal.

[0075] In order to understand the operating status of each battery cell, usually the sampling member of the sampling component is electrically connected to the electrical connection member to obtain the electrical signals of each battery cell; usually one column of battery cells corresponds to one connected sampling member. This is mainly because the distance between the first electrode terminal and the second electrode terminal is large. If two columns of battery cells share one sampling member, the distance between the sampling member and the electrical connection member is far, resulting in a long sampling distance for the sampling member.

[0076] However, the cost of the sampling member is high. In the case of a plurality of columns of battery cells being provided, more sampling members need to be provided, resulting in a relatively high cost of the battery.

[0077] Based on the above considerations, in order to reduce the manufacturing cost of the battery, an embodiment of the present application provides a battery, which includes a battery cell and a sampling component. The battery cell includes multiple columns of battery monomers arranged along a first direction, and each column of battery monomers includes multiple battery monomers arranged along a second direction; the battery monomer has a pressure relief mechanism, electrode terminals, and a first side wall along a third direction, and the electrode terminals include a first electrode terminal and a second electrode terminal with different polarities; the first electrode terminal, the second electrode terminal, and the pressure relief mechanism are arranged at intervals along the first direction on the first side wall, and the second electrode terminal is located between the first electrode terminal and the pressure relief mechanism; alternatively, the first electrode terminal and the second electrode terminal are arranged at intervals along the first direction on the first side wall, and the pressure relief mechanism is arranged on other side walls of the battery monomer; wherein, the first direction and the second direction intersect, and the third direction is perpendicular to the first direction and the second direction; the sampling component includes an electrical connector and a sampling piece electrically connected to the electrical connector, and the electrode terminals of adjacent two battery monomers are connected through the electrical connector, and a sampling piece is arranged between the electrode terminals of every two adjacent columns of battery monomers.

[0078] In the battery of the embodiment of the present application, since the second electrode terminal of the battery monomer is located between the first electrode terminal and the pressure relief mechanism, or the first electrode terminal and the second electrode terminal are located on the first side wall of the battery monomer, and the pressure relief mechanism is located on other side walls of the battery monomer, the distance between the first electrode terminal and the second electrode terminal can be set to be smaller, thereby reducing the distance between the electrical connector and the sampling piece and reducing the sampling distance of the sampling piece; therefore, two columns of battery monomers can share one sampling piece, reducing the number of sampling pieces and lowering the manufacturing cost of the battery.

[0079] The battery of the embodiment of the present application can be widely used in various electronic devices, including mobile phones, laptop computers, battery cars, electric vehicles, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and electric tools, etc. A battery is a device that can store and release electrical energy and provides the required power for these electronic devices.

[0080] The power-consuming device provided by the embodiment of the present application can use the battery of the embodiment of the present application. The battery provides electrical energy for the power-consuming device, and the cost of the battery is low, which can also reduce the manufacturing cost of the power-consuming device.

[0081] The electrical device according to the embodiments of the present application may be, but is not limited to, a vehicle, a mobile phone, a portable device, a laptop computer, a ship, a spacecraft, an electric toy, an electric tool, etc. Spacecraft include airplanes, rockets, space shuttles, spaceships, etc.; Electric toys include stationary or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, electric airplane toys, etc.; Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact electric drills, concrete vibrators, and electric planers, etc. The electrical device may also be an energy storage device, such as an energy storage container, an energy storage electrical cabinet, etc.

[0082] For the convenience of description, the following embodiments take a vehicle as an example of the electrical device according to the embodiments of the present application for illustration.

[0083] Please refer to Figure 1 , the vehicle 1000 may be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. A battery 1100 is disposed inside the vehicle 1000, and the battery 1100 may be disposed at the bottom, the head, or the tail of the vehicle 1000. The battery 1100 may be used for power supply of the vehicle 1000. For example, the battery 1100 may be used as the operating power source of the vehicle 1000. The vehicle 1000 may further include a controller 1200 and a motor 1300. The controller 1200 is used to control the battery 1100 to supply power to the motor 1300. For example, it is used for the working power requirements during the start, navigation, and driving of the vehicle 1000.

[0084] In some embodiments of the present application, the battery 1100 may not only be used as the operating power source of the vehicle 1000, but also be used as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0085] Please refer to Figure 2, the battery 1100 includes a box body 3 and battery cells 1, and the battery cells 1 are accommodated in the box body 3. Among them, the box body 3 is used to provide an accommodation space for the battery cells 1, and the box body 3 can adopt various structures. In some embodiments, the box body 3 may include a first part 31 and a second part 32, the first part 31 and the second part 32 cover each other, and the first part 31 and the second part 32 jointly define an accommodation space for accommodating the battery cells 1. The second part 32 may be a hollow structure with one end open, and the first part 31 may be a plate-like structure. The first part 31 covers the open side of the second part 32 so that the first part 31 and the second part 32 jointly define an accommodation space; the first part 31 and the second part 32 may also both be hollow structures with one side open, and the open side of the first part 31 covers the open side of the second part 32. Of course, the box body 3 formed by the first part 31 and the second part 32 can be of various shapes, such as a cylinder, a cuboid, etc.

[0086] In some embodiments, the number of battery cells 1 may be one or more. The multiple battery cells 1 can be directly connected in series, in parallel, or in a combined series-parallel connection and then placed in the box body 3. Among them, the combined series-parallel connection means that there are both series and parallel connections among multiple battery monomers 10.

[0087] In some embodiments, the battery cell 1 includes multiple battery monomers 10. The multiple battery monomers 10 can be directly connected in series, in parallel, or in a combined series-parallel connection, and then the whole formed by the multiple battery monomers 10 is accommodated in the box body 3; of course, the battery 1100 can also be in the form of multiple battery monomers 10 first connected in series, in parallel, or in a combined series-parallel connection to form a battery 1100 module, and then multiple battery 1100 modules are connected in series, in parallel, or in a combined series-parallel connection to form a whole and are accommodated in the box body 3.

[0088] Among them, each battery monomer 10 can be a secondary battery 1100 or a primary battery 1100; it can also be a lithium-sulfur battery 1100, a sodium-ion battery 1100, or a magnesium-ion battery 1100, but not limited thereto. The battery monomer 10 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc.

[0089] In some embodiments, the battery 1100 further includes a sampling component 2. The sampling component 2 is arranged in the box body 3. The battery cell 1 includes multiple battery monomers 10. The sampling component 2 can connect the multiple battery monomers 10 in series, in parallel, or in a combined series-parallel connection. At the same time, it can also obtain voltage information, current information, temperature information, etc. of each battery monomer 10 to monitor the working state of each battery monomer 10 and improve the use reliability of the battery 1100.

[0090] In some embodiments, the battery 1100 further includes a battery management module 4 (e.g., a Battery Management System (BMS)). The battery management module 4 is disposed in the box body 3 and can be electrically connected to the sampling component 2, enabling the battery management module 4 to collect information such as voltage information, current information, and temperature information collected by the sampling component 2 to achieve monitoring of the battery 1100. The battery management module 4 can also perform thermal management and / or safety management on the battery cells 10, etc.

[0091] In some embodiments, the battery 1100 may not include the box body 3. Instead, multiple battery cells 10 are electrically connected and formed into an integral body through necessary fixing structures and then assembled into an electrical device.

[0092] Refer to Figures 3 to 13 As shown, it representatively shows a schematic diagram of the battery 1100 and the battery cell 10 provided in the embodiments of the present application. In the following exemplary embodiments, the multiple battery cells 10 in the battery 1100 provided in the embodiments of the present application being in a series state are taken as an example for illustration. It is easy for those skilled in the art to understand that the relevant designs of the battery 1100 and the battery cell 10 provided in the embodiments of the present application can also be applied to the battery 1100 in which multiple battery cells 10 are in a parallel or mixed connection state. Moreover, various modifications, additions, substitutions, deletions, or other changes made to the following embodiments are still within the principle scope of the battery 1100 provided in the embodiments of the present application.

[0093] For the convenience of understanding and description, only the battery cell 10 in the shape of a cuboid is used for illustration in the embodiments provided in the present application. It should be understood that the embodiments provided in the present application are also applicable to the battery cell 10 in the shape of a cylinder or a pouch battery cell 10, and the embodiments of the present application do not make any limitations in this regard.

[0094] Refer to Figures 3 to 6As shown, in some embodiments of the present application, a battery 1100 is provided. The battery 1100 includes battery cells 1 and a sampling component 2. The battery cells 1 include multiple columns of battery monomers 10 arranged along a first direction, and each column of battery monomers 10 includes multiple battery monomers 10 arranged along a second direction; the battery monomer 10 has a pressure relief mechanism 12, electrode terminals 13, and a first sidewall 1111 along a third direction. The electrode terminals 13 include a first electrode terminal 131 and a second electrode terminal 132 with different polarities; the first electrode terminal 131, the second electrode terminal 132, and the pressure relief mechanism 12 are arranged at intervals along the first direction on the first sidewall 1111, and the second electrode terminal 132 is located between the first electrode terminal 131 and the pressure relief mechanism 12; alternatively, the first electrode terminal 131 and the second electrode terminal 132 are arranged at intervals along the first direction on the first sidewall 1111, and the pressure relief mechanism 12 is arranged on other sidewalls of the battery monomer 10; wherein, the first direction and the second direction intersect, and the third direction is perpendicular to the first direction and the second direction; the sampling component 2 includes an electrical connection member 21 and a sampling member 22 electrically connected to the electrical connection member 21. The electrode terminals 13 of two adjacent battery monomers 10 are connected by the electrical connection member 21, and a sampling member 22 is provided between the electrode terminals 13 of every two adjacent columns of battery monomers 10.

[0095] The battery cell 1 may refer to a component composed of multiple battery monomers 10. The multiple battery monomers 10 are arranged along the first direction and the second direction. The battery monomers 10 arranged along the first direction form a row of battery monomers 10, and the battery monomers 10 arranged along the second direction form a column of battery monomers 10. Among them, the battery cell 1 includes multiple rows and multiple columns of battery monomers 10. The first direction may refer to the extension direction of one side of the battery monomer 10; the first direction and the second direction are not parallel. For example, the included angle between the first direction and the second direction may be an acute angle or a right angle. The third direction may refer to the direction perpendicular to the first direction and the second direction.

[0096] Exemplarily, the first direction may refer to the length direction X of the battery monomer 10, the second direction may refer to the width direction Y of the battery monomer 10, and the third direction may refer to the height direction Z of the battery monomer 10.

[0097] The battery monomer 10 may refer to the smallest unit that makes up the battery cell 1. The battery monomer 10 includes an electrode assembly 14 and a housing 11. The electrode assembly 14 is installed in the housing 11 to protect the electrode assembly 14 through the housing 11.

[0098] Exemplarily, the electrode assembly 14 is composed of a positive electrode sheet, a negative electrode sheet, and a separator. The electrode assembly 14 mainly operates by the movement of metal ions between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode current collector. The portion of the positive electrode current collector where the positive electrode active material layer is not coated protrudes from the portion where the positive electrode active material layer is coated. The portion where the positive electrode active material layer is not coated serves as the positive electrode tab, or a metal conductor is welded and led out on the positive electrode current collector to serve as the positive electrode tab.

[0099] Taking a lithium-ion battery as an example, the material of the positive electrode current collector can be aluminum, and the positive electrode active material can be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode current collector. The portion of the negative electrode current collector where the negative electrode active material layer is not coated protrudes from the portion where the negative electrode active material layer is coated. The portion where the negative electrode active material layer is not coated serves as the negative electrode tab, or a metal conductor is welded and led out on the negative electrode current collector to serve as the negative electrode tab. The material of the negative electrode current collector can be copper, and the negative electrode active material can be carbon or silicon, etc.

[0100] In order to ensure to a certain extent that a large current can pass through without fusing, the number of positive electrode tabs is multiple and stacked together, and the number of negative electrode tabs is multiple and stacked together. It can be understood that in the electrode assembly 14, the number of positive electrode tabs can be one, and the number of negative electrode tabs can also be one. That is to say, two sets of tabs 141 are provided on the electrode assembly 14, each set includes at least one tab 141, and one set of tabs 141 is a positive electrode tab, and the other set of tabs 141 is a negative electrode tab.

[0101] The electrode assembly 14 can be a wound structure or a stacked structure. The embodiments of the present application are not limited thereto. The wound structure mostly welds the tabs 141 to the current collector, and then arranges them in the order of positive electrode sheet - separator - negative electrode sheet - separator; and then forms a cylindrical or square battery cell through winding. The stacked structure mostly leads out the tabs 141 on the current collector, arranges the positive electrode sheet, the negative electrode sheet, and the separator in the order of positive electrode sheet - separator - negative electrode sheet - separator, and stacks them layer by layer to form a stacked battery cell; wherein, the separator can be cut off and directly stacked with separator sheets, or the separator is not cut off, but stacked in a Z-shaped fold. The material of the separator can be PP (Polypropylene) or PE (Polyethylene), etc. The separator is an insulating film provided between the positive electrode sheet and the negative electrode sheet, and its main function is: to isolate the positive and negative electrodes and prevent electrons in the battery cell 10 from freely passing through, to prevent short circuit to a certain extent, and to allow ions in the electrolyte to freely pass between the positive and negative electrodes to form a circuit between the positive and negative electrodes. The positive electrode sheet and the negative electrode sheet are collectively referred to as electrode sheets. The positive electrode tab and the negative electrode tab are collectively referred to as tabs 141.

[0102] The housing 11 refers to the housing 112 structure with a space inside to accommodate and protect the electrode assembly 14. The housing 11 can be made of a material with a certain hardness and strength. In this way, the housing 11 is not easily deformed when subjected to extrusion and collision, enabling the battery cell 10 to have higher structural strength and improved reliability. The material of the housing 11 can be various, including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0103] The first side wall 1111 can refer to one of the two side walls of the housing 11 spaced along the third direction; exemplarily, the first side wall 1111 is parallel to the first direction and the second direction. In this way, multiple battery cells 10 are arranged along the first direction and the second direction, and the first side wall 1111 exposes the battery unit 1 to facilitate the electrical connection between the electrode terminals 13 of the battery cell 10 and the electrical connector 21.

[0104] The electrode terminal 13 refers to the conductive member provided on the first side wall 1111. The electrode terminal 13 is connected to the tab 141 of the electrode assembly 14 to output the electrical energy of the battery cell 10 or charge the battery cell 10. Generally, there are two electrode terminals 13 of the battery cell 10. The two electrode terminals 13 are respectively connected to the positive and negative tabs of the electrode assembly 14. The electrode terminal 13 connected to the positive tab is the positive electrode terminal, and the electrode terminal 13 connected to the negative tab is the negative electrode terminal. That is, one of the first electrode terminal 131 and the second electrode terminal 132 is the positive electrode terminal, and the other is the negative electrode terminal.

[0105] The pressure relief mechanism 12 can refer to a component that can release the gas or liquid inside the battery cell 10 to relieve the internal pressure of the battery cell 10. The pressure relief mechanism 12 can be but not limited to an explosion-proof valve, an explosion-proof sheet, etc.; in the case where the battery cell 10 overheats or overpressures during charging or use, the pressure relief mechanism 12 opens to release the internal pressure of the battery cell 10 and reduce the risk of explosion of the battery cell 10. This can improve the safety performance of the battery cell 10 and reduce potential safety risks.

[0106] The first electrode terminal 131, the second electrode terminal 132, and the pressure relief mechanism 12 are arranged at intervals along the first direction on the first side wall 1111. The second electrode terminal 132 is located between the first electrode terminal 131 and the pressure relief mechanism 12. It can be understood that the pressure relief mechanism 12 and the electrode terminal 13 are arranged on the same side wall of the battery cell 10. The pressure relief mechanism 12 is located on one side of the electrode terminal 13, and the second electrode terminal 132 is close to the pressure relief mechanism 12; the first electrode terminal 131, the second electrode terminal 132, and the pressure relief mechanism 12 are arranged at intervals along the first direction, so that there are gaps between the three, which can reduce the mutual interference between components and also reduce the risk of short circuit.

[0107] The first electrode terminal 131 and the second electrode terminal 132 are arranged at intervals along the first direction on the first side wall 1111, and the pressure relief mechanism 12 is located on other side walls of the battery cell 10; it can be understood that the electrode terminals 13 and the pressure relief mechanism 12 are located on different side walls of the battery cell 10, and the first electrode terminal 131 and the second electrode terminal 132 are arranged at intervals along the first direction, so that there is a gap between the first electrode terminal 131 and the second electrode terminal 132, which can reduce the risk of short circuit.

[0108] The sampling assembly 2 may refer to a component for realizing electrical connection between battery cells 10 and collecting data of the battery cells 10. The sampling assembly 2 includes an electrical connection member 21 and a sampling member 22. The electrical connection member 21 may refer to a component for electrically connecting the electrode terminals 13 of adjacent two battery cells 10. The electrical connection member 21 has electrical conductivity to meet the electrical connection requirements of the battery cells 10, such as: bus bars, etc. The electrical connection member 21 may completely cover the first electrode terminal 131 connected thereto, or may cover a part of the first electrode terminal 131 connected thereto; similarly, the electrical connection member 21 may completely cover the second electrode terminal 132 connected thereto, or may cover a part of the second electrode terminal 132 connected thereto; for the convenience of illustration, in the drawings, the electrical connection member 21 covers a part of the first electrode terminal 131 connected thereto, and the electrical connection member 21 covers a part of the second electrode terminal 132 connected thereto.

[0109] Exemplarily, when the polarities of the first electrode terminals 131 in adjacent two battery cells 10 are the same, the two first electrode terminals 131 are respectively connected to both ends of the electrical connection member 21, and the two second electrode terminals 132 are respectively connected to both ends of the electrical connection member 21, so that parallel connection of adjacent two battery cells 10 can be realized.

[0110] Exemplarily, when the polarities of the first electrode terminals 131 in adjacent two battery cells 10 are the same, the first electrode terminal 131 of one battery cell 10 and the second electrode terminal 132 of another battery cell 10 are connected to both ends of the electrical connection member 21, so that series connection of adjacent two battery cells 10 can be realized. After the battery cells 10 are electrically connected in sequence, the electrode terminals 13 at the frontmost and rearmost are the total negative and total positive of the battery unit 1 respectively.

[0111] The sampling component 22 can refer to a component capable of acquiring the electrical information of the battery cell 10. The sampling component 22 is electrically connected to the electrical connection component 21, so that the electrical information of the battery cell 10 is transmitted to the sampling component 22 to realize the sampling of the sampling component 22. The sampling component 22 can refer to components such as a flexible printed circuit (FPC for short), a rigid printed circuit board (PCB for short), or a wire. The sampling component 22 is electrically connected to the first conductive component 23 through the electrical connection component 21. Among them, the first conductive component 23 can be but is not limited to a wire, a conductive sheet, etc.

[0112] A sampling component 22 is provided between the electrode terminals 13 of every two adjacent columns of battery cells 10. It can be understood that in multiple columns of battery cells 10, two adjacent columns of battery cells 10 form a battery group 1100. Two adjacent battery groups 1100 do not include the same column of battery cells 10, that is, two adjacent battery groups 1100 include four columns of battery cells 10. One sampling component 22 is correspondingly provided for each battery group 1100. The opposite sides of the sampling component 22 respectively cover the side parts close to each other of the first side walls 1111 of two adjacent columns of battery cells 10. Of course, the sampling component 22 can also cover the side part of the first side wall 1111 of a column of battery cells 10.

[0113] In the battery 1100 of the embodiment of the present application, since the second electrode terminal 132 of the battery cell 10 is located between the first electrode terminal 131 and the pressure relief mechanism 12, or the first electrode terminal 131 and the second electrode terminal 132 are located on the first side wall 1111 of the battery cell 10, and the pressure relief mechanism 12 is located on other side walls of the battery cell 10, the distance between the first electrode terminal 131 and the second electrode terminal 132 can be set smaller, thereby reducing the distance between the electrical connection component 21 and the sampling component 22 and reducing the sampling distance of the sampling component 22. Therefore, two columns of battery cells 10 can share one sampling component 22, thereby reducing the number of sampling components 22 and lowering the manufacturing cost of the battery 1100.

[0114] In some cases, the size of the battery cell 10 in the first direction (which can refer to the length of the battery cell 10) is much larger than the size of the battery cell 10 in the second direction (which can refer to the width of the battery cell 10), so that the number of rows of the battery cells 10 arranged is much larger than the number of columns of the battery cells 10. In the battery 1100 of the embodiment of the present application, the sampling component 22 is connected to two adjacent columns of battery cells 10 instead of two adjacent rows, which can also reduce the number of sampling components 22 and lower the manufacturing cost of the battery 1100.

[0115] In other embodiments of the present application, refer to Figure 3As shown, in the same column of battery cells 10, two adjacent battery cells 10 are respectively a first battery cell 10a and a second battery cell 10b. The second electrode terminal 132 of the first battery cell 10a is disposed opposite to the second electrode terminal 132 of the second battery cell 10b. The first electrode terminal 131 of the first battery cell 10a is located on one side of the second electrode terminal 132 of the first battery cell 10a, and the first electrode terminal 131 of the second battery cell 10b is located on the other side of the second electrode terminal 132 of the first battery cell 10a.

[0116] In the same column of battery cells 10, one of two adjacent battery cells 10 is a first battery cell 10a, and the other is a second battery cell 10b. The second electrode terminals 132 of the first battery cell 10a and the second battery cell 10b are arranged along a second direction. The first electrode terminals 131 of the first battery cell 10a and the second battery cell 10b are located on opposite sides of the second electrode terminal 132 of the first battery cell 10a along a first direction.

[0117] In the case where multiple battery cells 10 are connected in series, along the second direction, the first electrode terminal 131 of the second battery cell 10b is disposed close to the sampling member 22. The second electrode terminal 132 of the previous first battery cell 10a and the first electrode terminal 131 of the second battery cell 10b are respectively connected to two ends of the electrical connector 21. The first electrode terminal 131 of the subsequent first battery cell 10a and the second electrode terminal 132 of the second battery cell 10b are respectively connected to two ends of the electrical connector 21. Among them, in these two electrical connectors 21, the sampling distance between the previous electrical connector 21 and the sampling member 22 may be equal to the distance between the first electrode terminal 131 of the second battery cell 10b and the sampling member 22, and the sampling distance between the subsequent electrical connector 21 and the sampling member 22 is equal to the distance between the second electrode terminal 132 of the second battery cell 10b and the sampling member 22. Since the first electrode terminal 131 of the second battery cell 10b is disposed close to the sampling member 22, the maximum sampling distance of the sampling member 22 may be equal to the distance between the second electrode terminal 132 of the second battery cell 10b and the sampling member 22. The second electrode terminal 132 is located between the first electrode terminals 131 of two adjacent battery cells 10, thereby reducing the sampling distance of the sampling member 22.

[0118] By adopting the technical solution of this embodiment, the second electrode terminals 132 of the first battery cell 10a and the second battery cell 10b are disposed opposite to each other. In this way, the distance between the electrical connector 21 connected to the second electrode terminal 132 and the sampling member 22 is relatively short, reducing the sampling distance of the sampling member 22 and facilitating the sharing of one sampling member 22 by two adjacent columns of battery cells 10.

[0119] In some other embodiments of the present application, refer to Figure 3 As shown, the end of the electrical connector 21 close to the sampling component 22 is connected to the sampling component 22.

[0120] It can be understood that the end of the electrical connector 21 closest to the sampling component 22 is connected to the sampling component 22.

[0121] By adopting the technical solution of this embodiment, the wiring distance and sampling distance between the electrical connector 21 and the sampling component 22 can be reduced, and the sampling wiring distance and sampling distance can be reduced.

[0122] In some other embodiments of the present application, refer to Figure 4 As shown, the second electrode terminal 132 is located at the middle position of the first side wall 1111 along the first direction.

[0123] It can be understood that one of the two opposite sides of the first side wall 1111 along the first direction is the first side 11111, and the other side is the second side 11112. The first side 11111 is located on the side of the second electrode terminal 132 facing away from the first electrode terminal 131; the distance L 1 between the second electrode terminal 132 and the first side 11111 is equal to or approximately equal to the distance L 3 between the second electrode terminal 132 and the second side 11112; in this way, when the battery cell 10 is flipped 180°, the second electrode terminal 132 is still located at the middle position. Therefore, the first battery cell 10a and the second battery cell 10b can adopt the same type of battery cell 10, and by flipping one of the two adjacent battery cells 10, the first battery cell 10a and the second battery cell 10b can be obtained.

[0124] By adopting the technical solution of this embodiment, the battery unit 1 can adopt the same type of battery cell 10, which is beneficial to reducing the manufacturing cost.

[0125] In some other embodiments of the present application, refer to Figure 7 and Figure 8 As shown, in the same column of battery cells 10, two adjacent battery cells 10 are the first battery cell 10a and the second battery cell 10b respectively. The first electrode terminal 131 of the first battery cell 10a is arranged opposite to the second electrode terminal 132 of the second battery cell 10b, and the second electrode terminal 132 of the first battery cell 10a is arranged opposite to the first electrode terminal 131 of the second battery cell 10b.

[0126] It can be understood that the first electrode terminal 131 of the first battery cell 10a and the second electrode terminal 132 of the second battery cell 10b are arranged along the second direction, and the second electrode terminal 132 of the first battery cell 10a and the first battery 1100 terminal of the second battery cell 10b are arranged along the second direction.

[0127] By adopting the technical solution of this embodiment, the electrode terminals 13 of the battery cell 10 are regularly arranged, which facilitates the installation of the electrical connection member 21.

[0128] In some other embodiments of the present application, refer to Figure 8 As shown, the first electrode terminal 131 and the second electrode terminal 132 are symmetrically arranged with respect to the bisector A of the first side wall 1111 in the first direction.

[0129] It can be understood that the distance L between the first electrode terminal 131 and the bisector A 4 is equal to the distance L between the second electrode terminal 132 and the bisector A 5 , where the distance L between the bisector A and the first side 11111 6 is equal to the distance L between the bisector A and the second side 11112 7 , and the bisector A is perpendicular to the first direction. In this way, when the battery cell 10 is flipped 180°, the positions of the first terminal and the second electrode terminal 132 of the battery cell 10 are interchanged, so that the first battery cell 10a and the second battery cell 10b can adopt the same type of battery cell 10. Just flip one of the adjacent two battery cells 10 by 180°, and the first battery cell 10a and the second battery cell 10b can be obtained.

[0130] By adopting the technical solution of this embodiment, the battery unit 1 can adopt the same type of battery cell 10, which is beneficial to reducing the manufacturing cost.

[0131] In some other embodiments of the present application, refer to Figure 9 and Figure 10 As shown, in the same column of battery cells 10, two adjacent battery cells 10 are respectively the first battery cell 10a and the second battery cell 10b. The electrode terminals 13 of the first battery cell 10a and the electrode terminals 13 of the second battery cell 10b are arranged close to the sampling member 22; the first electrode terminal 131 of the first battery cell 10a is arranged opposite to the first electrode terminal 131 of the second battery cell 10b, and the second electrode terminal 132 of the second battery cell 10b is arranged opposite to the second electrode terminal 132 of the second battery cell 10b.

[0132] When a pressure relief mechanism 12 is provided on the first side wall 1111, the first electrode terminal 131 and the second electrode terminal 132 of the first battery cell 10a are located between the sampling member 22 and the pressure relief mechanism 12 of the first battery cell 10a, and the first electrode terminal 131 and the second electrode terminal 132 of the second battery cell 10b are located between the sampling member 22 and the pressure relief mechanism 12 of the second battery cell 10b; the first electrode terminals 131 of the first battery cell 10a and the second battery cell 10b are arranged along the second direction, and the second electrode terminals 132 of the first battery cell 10a and the second battery cell 10b are arranged along the second direction.

[0133] By adopting the technical solution of this embodiment, the electrode terminals 13 of the battery cell 10 are regularly arranged, which is convenient for the installation of the electrical connection member 21.

[0134] In some other embodiments of the present application, refer to Figure 3 and Figure 7 As shown, the polarities of the first electrode terminals 131 of the first battery cell 10a and the second battery cell 10b are the same.

[0135] It can be understood that the polarities of the second electrode terminals 132 of the first battery cell 10a and the second battery cell 10b are the same.

[0136] Exemplarily, the first electrode terminal 131 of the first battery cell 10a is a positive electrode terminal, the second electrode terminal 132 of the first battery cell 10a is a negative electrode terminal, the first electrode terminal 131 of the second battery cell 10b is a positive electrode terminal, and the second electrode terminal 132 of the second battery cell 10b is a negative electrode terminal.

[0137] Exemplarily, the first electrode terminal 131 of the first battery cell 10a is a negative electrode terminal, the second electrode terminal 132 of the first battery cell 10a is a positive electrode terminal, the first electrode terminal 131 of the second battery cell 10b is a negative electrode terminal, and the second electrode terminal 132 of the second battery cell 10b is a positive electrode terminal.

[0138] By adopting the technical solution of this embodiment, the polarities of the first electrode terminals 131 of the first battery cell 10a and the second battery cell 10b are the same, which can facilitate the first battery cell 10a and the second battery cell 10b to adopt the same type of battery cell 10 and reduce the manufacturing cost of the battery 1100.

[0139] In some other embodiments of the present application, refer to Figure 9 As shown, the polarities of the first electrode terminals 131 of the first battery cell 10a and the second battery cell 10b are different.

[0140] It is understandable that the polarities of the second electrode terminals 132 of the first battery cell 10a and the second battery cell 10b are different.

[0141] Exemplarily, the first electrode terminal 131 of the first battery cell 10a is a positive electrode terminal, the second electrode terminal 132 of the first battery cell 10a is a negative electrode terminal, the first electrode terminal 131 of the second battery cell 10b is a negative electrode terminal, and the second electrode terminal 132 of the second battery cell 10b is a positive electrode terminal.

[0142] Exemplarily, the first electrode terminal 131 of the first battery cell 10a is a negative electrode terminal, the second electrode terminal 132 of the first battery cell 10a is a positive electrode terminal, the first electrode terminal 131 of the second battery cell 10b is a positive electrode terminal, and the second electrode terminal 132 of the second battery cell 10b is a negative electrode terminal.

[0143] By adopting the technical solution of this embodiment, the polarities of the first electrode terminals 131 of the first battery cell 10a and the second battery cell 10b are different, which facilitates the electrical connection between the electrode terminals 13 and the electrical connector 21 and reduces the manufacturing cost of the battery 1100.

[0144] In some other embodiments of the present application, refer to Figure 9 and Figure 10 As shown, the first side wall 1111 has a first side edge 11111 and a second side edge 11112 that are spaced apart in the first direction. The first electrode terminal 131 is located between the second electrode terminal 132 and the first side edge 11111; the distance between the first side edge 11111 and the second side edge 11112 is L, and the distance between the second electrode terminal 132 and the first side edge 11111 is L 1 , where 0.2 ≤ L 1 / L ≤ 0.5.

[0145] The distance L between the first side edge 11111 and the second side edge 11112 may refer to the dimension of the first side wall 1111 in the first direction, that is, the length of the battery cell 10, and is also equal to the distance L between the bisector A and the first side edge 11111 6 plus the distance L between the bisector A and the second side edge 11112 7 ; the distance L between the second electrode terminal 132 and the first side edge 11111 1 may refer to the spacing between the side of the second electrode terminal 132 close to the first electrode terminal 131 and the first side edge 11111.

[0146] 0.2 ≤ L 1 / L ≤ 0.5. It is understandable that L1 / L≤0.5, so that the first electrode terminal 131 and the second electrode terminal 132 deviate from the middle position of the first side wall 1111 along the first direction, so that when the first side edge 11111 is arranged close to the sampling member 22, the distance between the second electrode terminal 132 and the sampling member 22 can be reduced, which is conducive to reducing the sampling distance; L 1 / L≥0.2, so that there is a certain space between the second electrode terminal 132 and the first side 11111, and the space can be used for the first electrode terminal 131 and the second electrode terminal 132 to be installed at intervals, thereby reducing the risk of short circuit, and can also allow the positive electrode tab and the negative electrode tab to have a certain spacing space, thereby reducing the risk of short circuit.

[0147] By adopting the technical solution of this embodiment, it is helpful to reduce the sampling distance and also reduce the short circuit risk of the battery cell 10 .

[0148] In other embodiments of the present application, see Figure 9 and Figure 10 As shown, 0.35≤L 1 / L≤0.45.

[0149] 0.35≤L 1 / L≤0.45, it is understandable that L 1 / L≤0.45, so that the first electrode terminal 131 and the second electrode terminal 132 are arranged on the side of the first side wall 1111 close to the first side edge 11111, so that when the first side edge 11111 is arranged close to the sampling member 22, the distance between the second electrode terminal 132 and the sampling member 22 can be better reduced, which is conducive to reducing the sampling distance; L 1 / L≥0.35, so that there is a larger space between the second electrode terminal 132 and the first side 11111, and the space can be used for the first electrode terminal 131 and the second electrode terminal 132 to be installed at intervals, and the spacing distance between the first electrode terminal 131 and the second electrode terminal 132 is larger, which can better reduce the risk of short circuit, and can also allow the positive electrode tab and the negative electrode tab to have a larger spacing space, better reducing the risk of short circuit.

[0150] By adopting the technical solution of this embodiment, the sampling distance can be better reduced, and the short circuit risk of the battery cell 10 can also be better reduced.

[0151] In some embodiments, L 1 The value of / L can be 0.2, 0.5, or any value between 0.2 and 0.5; for example, L 1The value of / L can be, but is not limited to, 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.3, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.4, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49, 0.5.

[0152] In some other embodiments of the present application, refer to Figure 11 and Figure 12 As shown, the pressure relief mechanism 12 is provided on the first side wall 1111, the second electrode terminal 132 is located between the first electrode terminal 131 and the pressure relief mechanism 12, the first side wall 1111 has a first side edge 11111 and a second side edge 11112 that are spaced apart along the first direction, and the first electrode terminal 131 is located between the second electrode terminal 132 and the first side edge 11111; the distance between the first side edge 11111 and the second side edge 11112 is L, and the distance between the second electrode terminal 132 and the pressure relief mechanism 12 is L 2 , where, 0.5 ≤ L 2 / L ≤ 2 / 3.

[0153] The distance L between the second electrode terminal 132 and the pressure relief mechanism 12 2 may refer to the distance between the side surface of the second electrode terminal 132 close to the second side edge 11112 and the pressure relief mechanism 12.

[0154] 0.5 ≤ L 2 / L ≤ 2 / 3, it can be understood that L 2 / L ≥ 0.5, so that the distance between the second electrode terminal 132 and the pressure relief mechanism 12 is greater than or equal to half of the dimension of the first side wall 1111 along the first direction. The distance between the second electrode terminal 132 and the pressure relief mechanism 12 is far, and the distance between the first electrode terminal 131 and the pressure relief mechanism 12 is even farther, so that the particulate matter ejected when the pressure relief mechanism 12 is opened is not easily moved between the electrical connector 21 and the first side wall 1111, thereby reducing the risk of electrical connection and conduction between the electrical connector 21 and the first side wall 1111 due to particulate matter; L 2 / L ≤ 2 / 3, so that there is a certain space between the second electrode terminal 132 and the first side edge 11111. This space can be used for the first electrode terminal 131 and the second electrode terminal 132 to be installed at intervals, reducing the risk of short circuit, and can also make the positive electrode tab and the negative electrode tab have a certain interval space, reducing the risk of short circuit.

[0155] By adopting the technical solution of this embodiment, the risk of electrical connection and conduction between the electrical connector 21 and the first side wall 1111 can be reduced, and the short-circuit risk of the battery cell 10 can also be reduced, which is beneficial to improving the use reliability of the battery 1100.

[0156] In some other embodiments of the present application, refer to Figure 11 and Figure 12 As shown, 0.55 ≤ L 2 / L ≤ 0.65.

[0157] 0.55 ≤ L 2 / L ≤ 0.65. It can be understood that L 2 / L ≥ 0.55, such that the distance between the second electrode terminal 132 and the pressure relief mechanism 12 is greater than half of the dimension of the first side wall 1111 along the first direction. The distance between the second electrode terminal 132 and the pressure relief mechanism 12 is relatively far, and the distance between the first electrode terminal 131 and the pressure relief mechanism 12 is even farther. This makes it more difficult for the particulate matter ejected when the pressure relief mechanism 12 is opened to move between the electrical connector 21 and the first side wall 1111, thereby better reducing the risk of electrical connection and conduction between the electrical connector 21 and the first side wall 1111 caused by particulate matter; L 2 / L ≤ 0.65, such that there is a relatively large space between the second electrode terminal 132 and the first side 11111. This space can be used for the spaced installation of the first electrode terminal 131 and the second electrode terminal 132, and the spacing distance between the first electrode terminal 131 and the second electrode terminal 132 is relatively large, which can better reduce the short-circuit risk. Moreover, it can also provide a relatively large spacing space between the positive electrode tab and the negative electrode tab, better reducing the short-circuit risk.

[0158] By adopting the technical solution of this embodiment, the risk of electrical connection and conduction between the electrical connector 21 and the first side wall 1111 can be better reduced, and the short-circuit risk of the battery cell 10 can also be better reduced, which is beneficial to improving the use reliability of the battery 1100.

[0159] In some embodiments, the value of L 2 / L can be 0.5, 2 / 3 or any value between 0.5 and 2 / 3; for example, the value of L 2 / L can be but is not limited to 0.5, 0.51, 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 2 / 3.

[0160] In some other embodiments of the present application, refer to Figure 13As shown, the pressure relief mechanism 12 is provided on the first side wall 1111, and the second electrode terminal 132 is located between the first electrode terminal 131 and the pressure relief mechanism 12. In the same column of battery cells 10, the pressure relief mechanisms 12 of the battery cells 10 are arranged staggeredly.

[0161] When the pressure relief mechanism 12 is provided on the first side wall 1111 and the second electrode terminal 132 is located between the first electrode terminal 131 and the pressure relief mechanism 12, in the same column of battery cells 10, the pressure relief mechanisms 12 of each battery cell 10 are not located on the same straight line parallel to the second direction; wherein, the pressure relief mechanisms 12 of the battery cells 10 can be arranged along a straight line inclined relative to the sampling member 22, or can be arranged along a broken line.

[0162] Exemplarily, the pressure relief mechanism 12 of the first battery cell 10a is arranged along the first straight line B, and the pressure relief mechanism 12 of the second battery cell 10b is arranged along the second straight line C. The first straight line B and the second straight line C are arranged at intervals, and both the first straight line B and the second straight line C are parallel to the second direction. With such an arrangement, the structure of the battery cell 10 is simple, and the operation of forming a battery unit 1 by grouping the battery cells 10 is simple.

[0163] By adopting the technical solution of this embodiment, the pressure relief mechanisms 12 are arranged staggeredly, which can increase the distance between the pressure relief mechanisms 12 of two adjacent battery cells 10. In this way, the high-temperature impact and the ejected particulate matter after the pressure relief mechanism 12 is opened on the pressure relief mechanism 12 of the adjacent battery cell 10 can be reduced, and the risk of melting through the pressure relief mechanism 12 of the adjacent battery cell 10 can be reduced, which is beneficial to improving the use reliability of the battery cell 10.

[0164] In some other embodiments of the present application, refer to Figure 3 As shown, a plurality of battery cells 10 are connected in series through an electrical connector 21.

[0165] It can be understood that two electrode terminals 13 with different polarities of two adjacent battery cells 10 are respectively electrically connected to both ends of the electrical connector 21, and this connection method is simple.

[0166] Exemplarily, refer to Figure 7 As shown, in the same column of battery cells 10, the first electrode terminal 131 of the first battery cell 10a and the second electrode terminal 132 of the second battery cell 10b are arranged opposite to each other, the second electrode terminal 132 of the first battery cell 10a and the first electrode terminal 131 of the second battery cell 10b are arranged opposite to each other, and the polarities of the first electrode terminal 131 of the first battery cell 10a and the first electrode terminal 131 of the second battery cell 10b are the same. In this way, the electrical connector 21 can be arranged parallel to the second direction, so as to connect the first battery cell 10a and the second battery cell 10b in series. The arrangement method of the electrical connector 21 is regular and simple, which is beneficial to improving the production efficiency and reducing the short-circuit risk.

[0167] Exemplarily, referring to Figure 9 As shown, in the battery cells 10 in the same column, the first electrode terminals 131 of the first battery cell 10a and the first electrode terminals 131 of the second battery cell 10b are arranged opposite to each other, the second electrode terminals 132 of the first battery cell 10a and the second electrode terminals 132 of the second battery cell 10b are arranged opposite to each other, and the polarities of the first electrode terminals 131 of the first battery cell 10a and the first electrode terminals 131 of the second battery cell 10b are different. In this way, the electrical connection member 21 can be arranged parallel to the second direction, so as to connect the first battery cell 10a and the second battery cell 10b in series. The arrangement of the electrical connection member 21 is regular and simple, which is beneficial to improving production efficiency and reducing the risk of short circuit.

[0168] By adopting the technical solution of this embodiment, the battery cells 10 are connected in series, and the electrical connection operation between the battery cells 10 is simple, which is beneficial to reducing the manufacturing cost of the battery cells 10.

[0169] In some other embodiments of the present application, referring to Figure 3 As shown, the sampling member 22 extends along the second direction.

[0170] It can be understood that the sampling member 22 is in a long strip shape and is arranged parallel to the second direction.

[0171] By adopting the technical solution of this embodiment, the sampling member 22 can be correspondingly arranged with the battery cells 10 in two adjacent columns of battery cells 10, which is beneficial to reducing the connection distance between the electrical connection member 21 and the sampling member 22.

[0172] In some other embodiments of the present application, referring to Figure 3 As shown, the sampling member 22 includes at least one of a flexible circuit board and a rigid circuit board.

[0173] It can be understood that the sampling member 22 can be a flexible circuit board. The flexible circuit board is soft and bendable, and has better adaptability to the battery cell 10; the sampling member 22 can be a rigid circuit board. The rigid circuit board has good structural strength and is not easily damaged, which is beneficial to improving the reliability of sampling; the sampling member 22 includes a flexible circuit board and a rigid circuit board, and the flexible circuit board and the rigid circuit board can be reasonably selected according to the actual situation, so that the setting of the sampling member 22 is more flexible and has better practicability.

[0174] By adopting the technical solution of this embodiment, different types of sampling members 22 can be selected according to the actual situation, so that the setting of the sampling member 22 is more flexible and has better practicability.

[0175] In some other embodiments of the present application, referring to Figure 5 and Figure 6As shown, the battery cell 10 has a second side wall 1121 disposed opposite to the first side wall 1111, and a pressure relief mechanism 12 is provided on the second side wall 1121.

[0176] It can be understood that one of the opposite side walls of the battery cell 10 in the third direction is the first side wall 1111, and the other is the second side wall 1121, and a pressure relief mechanism 12 is provided on the second side wall 1121.

[0177] Exemplarily, the pressure relief mechanism 12 may be provided only on the second side wall 1121 of the battery cell 10, or both the first side wall 1111 and the second side wall 1121 may be provided with the pressure relief mechanism 12. It may also be that the second side wall 1121 is provided with the pressure relief mechanism 12, and the first side wall 1111 is not provided with the pressure relief mechanism 12, and the other side walls except the first side wall 1111 and the second side wall 1121 are also provided with the pressure relief mechanism 12.

[0178] By adopting the technical solution of this embodiment, the pressure relief mechanism 12 is provided on the second side wall 1121, so that the particulate matter ejected when the pressure relief mechanism 12 on the second side wall 1121 is opened is not easily in contact with the electrical connection member 21, the electrode terminal 13 and the sampling member 22, thereby reducing the damage risk of the electrical connection member 21, the electrode terminal 13 and the sampling member 22, and being beneficial to improving the use reliability of the battery 1100.

[0179] In some other embodiments of the present application, refer to Figure 3 As shown, the battery cell 10 is provided with a temperature sensor 15 for acquiring temperature information, and the temperature sensor 15 is electrically connected to the sampling member 22.

[0180] The temperature sensor 15 may refer to a component capable of acquiring temperature information. The temperature sampling member 22 may be, but is not limited to, a thermistor, a thermocouple, a semiconductor sensor, etc.; the temperature sensor 15 is electrically connected to the sampling member 22. It can be understood that the temperature sensor 15 can transmit the temperature signal to the sampling member 22, and the sampling member 22 can feedback the acquired temperature signal to the battery management module 4 to monitor the working state of the battery 1100 and take necessary measures, such as controlling the charge and discharge rate and preventing overheating.

[0181] The temperature sensor 15 and the sampling member 22 may be electrically connected through a second conductive member 24, where the second conductive member 24 may be, but is not limited to, a wire, a conductive sheet, etc.

[0182] By adopting the technical solution of this embodiment, the sampling member 22 and the temperature sensor 15 cooperate to be able to acquire the temperature signal of the battery cell 10, so as to facilitate a more comprehensive monitoring of the operating state of the battery cell 10, and be beneficial to improving the use reliability of the battery 1100.

[0183] In some other embodiments of the present application, refer to Figure 5 andFigure 6 As shown, a battery cell 10 is provided. The battery cell 10 includes a housing 11 and electrode terminals 13: The housing 11 has a first side wall 1111. A pressure relief mechanism 12, a first electrode terminal 131 and a second electrode terminal 132 with different polarities are provided on the first side wall 1111. The second electrode terminal 132 is located between the first electrode terminal 131 and the pressure relief mechanism 12; An electrode assembly 14 is located inside the housing 11. The first electrode terminal 131 and the second electrode terminal 132 are electrically connected to the electrode assembly 14 to achieve input and output of electric energy.

[0184] In the battery cell 10 of the embodiment of the present application, the second electrode terminal 132 is located between the pressure relief mechanism 12 and the first electrode terminal 131, so that the distance between the first electrode terminal 131 and the second electrode terminal 132 can be set smaller, which is convenient for two adjacent columns of battery cells 10 to share a sampling part 22, thereby reducing the manufacturing cost of the battery 1100.

[0185] In some embodiments, the housing 11 includes an end cap 111 and a housing body 112.

[0186] The end cap 111 refers to a component that covers the opening of the housing body 112 to isolate the internal environment of the battery cell 10 from the external environment. Without limitation, the shape of the end cap 111 can be adapted to the shape of the housing body 112 to cooperate with the housing body 112. Optionally, the end cap 111 can be made of a material with certain hardness and strength (such as aluminum alloy). In this way, the end cap 111 is not easily deformed when being squeezed and collided, so that the battery cell 10 can have higher structural strength and the safety performance can also be improved. The material of the end cap 111 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. The embodiment of the present application does not make special restrictions on this. In some embodiments, an insulating part can also be provided on the inner side of the end cap 111. The insulating part can be used to isolate the electrical connection components in the housing body 112 from the end cap 111 to reduce the risk of short circuit. Exemplarily, the insulating part can be plastic, rubber, etc.

[0187] The housing 112 is a component for cooperating with the end cap 111 to form the internal environment of the battery cell 10. Among them, the formed internal environment can be used to accommodate the electrode assembly 14, the electrolyte, and other components. The housing 112 and the end cap 111 can be independent components. An opening can be provided on the housing 112, and the end cap 111 is covered at the opening to form the internal environment of the battery cell 10. Without limitation, the end cap 111 and the housing 112 can also be integrated. Specifically, the end cap 111 and the housing 112 can first form a common connection surface before other components are put into the housing. When it is necessary to encapsulate the inside of the housing 112, the end cap 111 is then covered on the housing 112. The housing 112 can be of various shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 112 can be determined according to the specific shape and size of the electrode assembly 14. The material of the housing 112 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. The embodiments of the present application do not make special restrictions on this.

[0188] In some embodiments, the end cap 111 is the first side wall 1111, and the side wall of the housing 112 opposite to the end cap 111 is the second side wall 1121; or, one of the two opposite side walls of the housing 112 is the first side wall 1111, and the other side wall is the second side wall 1121.

[0189] The battery 1100 of the embodiments of the present application will be described below in conjunction with some specific embodiments.

[0190] Embodiment 1

[0191] Combined with Figures 3 to 6 As shown, in this embodiment, the battery 1100 includes a battery unit 1 and a sampling component 2. The battery unit 1 includes multiple columns of battery cells 10 arranged along the first direction, and each column of battery cells 10 includes multiple battery cells 10 arranged along the second direction; the battery cell 10 has a pressure relief mechanism 12, electrode terminals 13, and a first side wall 1111 along the third direction. The electrode terminals 13 include a first electrode terminal 131 and a second electrode terminal 132 with different polarities; the first electrode terminal 131, the second electrode terminal 132, and the pressure relief mechanism 12 are arranged at intervals along the first direction on the first side wall 1111, and the second electrode terminal 132 is located between the first electrode terminal 131 and the pressure relief mechanism 12; or, the first electrode terminal 131 and the second electrode terminal 132 are arranged at intervals along the first direction on the first side wall 1111, and the pressure relief mechanism 12 is arranged on other side walls of the battery cell 10; among them, the first direction and the second direction intersect, and the third direction is perpendicular to the first direction and the second direction; the sampling component 2 includes an electrical connector 21 and a sampling piece 22 electrically connected to the electrical connector 21. The electrode terminals 13 of adjacent two battery cells 10 are connected through the electrical connector 21, and a sampling piece 22 is provided between the electrode terminals 13 of every two adjacent columns of battery cells 10.

[0192] In this embodiment, in the same column of battery cells 10, two adjacent battery cells 10 are respectively a first battery cell 10a and a second battery cell 10b. The second electrode terminal 132 of the first battery cell 10a is disposed opposite to the second electrode terminal 132 of the second battery cell 10b. The first electrode terminal 131 of the first battery cell 10a is located on one side of the second electrode terminal 132 of the first battery cell 10a, and the first electrode terminal 131 of the second battery cell 10b is located on the other side of the second electrode terminal 132 of the first battery cell 10a.

[0193] In this embodiment, the end of the electrical connector 21 close to the sampling member 22 is connected to the sampling member 22.

[0194] In this embodiment, the second electrode terminal 132 is located at the middle position of the first side wall 1111 in the first direction.

[0195] In this embodiment, the polarities of the first electrode terminal 131 of the first battery cell 10a and the first electrode terminal 131 of the second battery cell 10b are the same.

[0196] In this embodiment, multiple battery cells 10 are connected in series through the electrical connector 21.

[0197] In this embodiment, the sampling member 22 extends along the second direction.

[0198] In this embodiment, the sampling member 22 includes a flexible circuit board.

[0199] In this embodiment, the battery cell 10 is provided with a temperature sensor 15 for obtaining temperature information, and the temperature sensor 15 is connected to the sampling member 22.

[0200] In this embodiment, the battery cell 10 includes a housing 11 and an electrode assembly 14. The housing 11 has a first side wall 1111. The first side wall 1111 is provided with a pressure relief mechanism 12 and first and second electrode terminals 131 and 132 with different polarities. The second electrode terminal 132 is located between the first electrode terminal 131 and the pressure relief mechanism 12. The electrode assembly 14 is located inside the housing 11, and the first electrode terminal 131 and the second electrode terminal 132 are electrically connected to the electrode assembly 14 to realize the input and output of electric energy.

[0201] In this embodiment, the housing 11 includes an end cap 111 and a housing body 112. The end cap 111 covers the opening of the housing body 112, the end cap 111 forms the first side wall 1111, and the side wall of the housing body 112 opposite to the end cap 111 forms a second side wall 1121.

[0202] Embodiment Two

[0203] The difference between this embodiment and the second embodiment is as follows: Refer to Figure 7 and Figure 8 As shown, in the same column of battery cells 10, two adjacent battery cells 10 are respectively a first battery cell 10a and a second battery cell 10b. The first electrode terminal 131 of the first battery cell 10a is disposed opposite to the second electrode terminal 132 of the second battery cell 10b, and the second electrode terminal 132 of the first battery cell 10a is disposed opposite to the first electrode terminal 131 of the second battery cell 10b.

[0204] In this embodiment, the first electrode terminal 131 and the second electrode terminal 132 are symmetrically disposed with respect to the bisector A of the first side wall 1111 in the first direction.

[0205] Embodiment Three

[0206] The difference between this embodiment and the first embodiment is as follows: Refer to Figure 9 and Figure 10 As shown, in the same column of battery cells 10, two adjacent battery cells 10 are respectively a first battery cell 10a and a second battery cell 10b. The electrode terminals 13 of the first battery cell 10a and the electrode terminals 13 of the second battery cell 10b are disposed close to the sampling member 22; the first electrode terminal 131 of the first battery cell 10a is disposed opposite to the first electrode terminal 131 of the second battery cell 10b, and the second electrode terminal 132 of the second battery cell 10b is disposed opposite to the second electrode terminal 132 of the second battery cell 10b.

[0207] In this embodiment, the polarities of the first electrode terminal 131 of the first battery cell 10a and the first electrode terminal 131 of the second battery cell 10b are different.

[0208] In this embodiment, the first side wall 1111 has a first side edge 11111 and a second side edge 11112 that are spaced apart in the first direction. The first electrode terminal 131 is located between the second electrode terminal 132 and the first side edge 11111; the distance between the first side edge 11111 and the second side edge 11112 is L, and the distance between the second electrode terminal 132 and the first side edge 11111 is L 1 , where 0.2 ≤ L 1 / L ≤ 0.5.

[0209] In this embodiment, 0.35 ≤ L 1 / L ≤ 0.45.

[0210] Embodiment Four

[0211] The difference between this embodiment and the third embodiment is as follows: Refer to Figure 11 and Figure 12As shown, the pressure relief mechanism 12 is provided on the first sidewall 1111, the second electrode terminal 132 is located between the first electrode terminal 131 and the pressure relief mechanism 12. The first sidewall 1111 has a first side 11111 and a second side 11112 that are spaced apart in the first direction. The first electrode terminal 131 is located between the second electrode terminal 132 and the first side 11111. The distance between the first side 11111 and the second side 11112 is L, and the distance between the second electrode terminal 132 and the pressure relief mechanism 12 is L 2 , where 0.5 ≤ L 2 / L ≤ 2 / 3

[0212] In this embodiment, 0.55 ≤ L 2 / L ≤ 0.65

[0213] Embodiment Five

[0214] The difference between this embodiment and Embodiment Three is as follows: Referring to Figure 13 As shown, the pressure relief mechanism 12 is provided on the first sidewall 1111, the second electrode terminal 132 is located between the first electrode terminal 131 and the pressure relief mechanism 12. In the same column of battery cells 10, the pressure relief mechanisms 12 of the battery cells 10 are arranged staggeredly

[0215] In some other embodiments of the present application, referring to Figure 1 As shown, the electrical device includes the battery 1100 as described in the above embodiments; and / or, the battery cell 10 as described in the above embodiments

[0216] It can be understood that the electrical device includes the battery 1100 as described in the above embodiments; or, the battery cell 10 as described in the above embodiments; or, the electrical device includes the battery 1100 as described in the above embodiments and the battery cell 10 as described in the above embodiments

[0217] The descriptions of the above embodiments tend to emphasize the differences between the embodiments. Their similarities or similarities can be referred to each other. For the sake of brevity, they are not elaborated herein

[0218] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered within the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery, characterized in that: include, A battery unit, comprising a plurality of columns of battery cells arranged along a first direction, each column of battery cells comprising a plurality of battery cells arranged along a second direction; The battery cell comprises a pressure relief mechanism, an electrode terminal and a first side wall along a third direction, wherein the electrode terminal comprises a first electrode terminal and a second electrode terminal with different polarities; the first electrode terminal, the second electrode terminal and the pressure relief mechanism are arranged at intervals on the first side wall along the first direction, and the second electrode terminal is located between the first electrode terminal and the pressure relief mechanism; or, the first electrode terminal and the second electrode terminal are arranged at intervals on the first side wall along the first direction, and the pressure relief mechanism is arranged on the other side wall of the battery cell; wherein the first direction and the second direction intersect, and the third direction is perpendicular to the first direction and the second direction; The sampling assembly comprises an electrical connector and a sampling member for electrically connecting to the electrical connector. The electrode terminals of two adjacent battery cells are connected via the electrical connector, and the sampling member is arranged between the electrode terminals of each two adjacent columns of battery cells.

2. The battery according to claim 1, characterized in that: In the same column of the battery cells, two adjacent battery cells are respectively a first battery cell and a second battery cell, the second electrode terminal of the first battery cell is arranged opposite to the second electrode terminal of the second battery cell, the first electrode terminal of the first battery cell is located on one side of the second electrode terminal of the first battery cell, and the first electrode terminal of the second battery cell is located on the other side of the second electrode terminal of the first battery cell.

3. The battery according to claim 2, characterized in that: The end of the electrical connector close to the sampling component is connected to the sampling component.

4. The battery according to claim 2, characterized in that: The second electrode terminal is located at a middle position of the first side wall in the first direction.

5. The battery according to claim 1, characterized in that: In the same column of battery cells, two adjacent battery cells are respectively a first battery cell and a second battery cell, the first electrode terminal of the first battery cell is arranged opposite to the second electrode terminal of the second battery cell, and the second electrode terminal of the first battery cell is arranged opposite to the first electrode terminal of the second battery cell.

6. The battery according to claim 5, characterized in that: The first electrode terminal and the second electrode terminal are symmetrically arranged about a bisector of the first side wall in the first direction.

7. The battery according to claim 1, characterized in that: In the same column of battery cells, two adjacent battery cells are respectively a first battery cell and a second battery cell, and the electrode terminal of the first battery cell and the electrode terminal of the second battery cell are arranged close to the sampling piece; the first electrode terminal of the first battery cell is arranged opposite to the first electrode terminal of the second battery cell, and the second electrode terminal of the second battery cell is arranged opposite to the second electrode terminal of the second battery cell.

8. The battery according to claim 2, characterized in that: The first electrode terminal of the first battery cell and the first electrode terminal of the second battery cell have the same polarity; or the first electrode terminal of the first battery cell and the first electrode terminal of the second battery cell have different polarities.

9. The battery according to any one of claims 1 to 8, characterized in that: The first side wall has a first side edge and a second side edge spaced apart along the first direction, and the first electrode terminal is located between the second electrode terminal and the first side edge; the spacing between the first side edge and the second side edge is L, and the distance between the second electrode terminal and the first side edge is L1, wherein 0.2≤L1 / L≤0.

5.

10. The battery according to claim 9, characterized in that: 0.35≤L1 / L≤0.

45.

11. The battery according to any one of claims 1 to 8, characterized in that: The pressure relief mechanism is arranged on the first side wall, the second electrode terminal is located between the first electrode terminal and the pressure relief mechanism, the first side wall has a first side edge and a second side edge spaced apart along the first direction, and the first electrode terminal is located between the second electrode terminal and the first side edge; the spacing between the first side edge and the second side edge is L, and the distance between the second electrode terminal and the pressure relief mechanism is L2, wherein 0.5≤L2 / L≤2 / 3.

12. The battery according to claim 11, characterized in that: 0.55≤L2 / L≤0.

65.

13. The battery according to any one of claims 1 to 8, characterized in that: The pressure relief mechanism is arranged on the first side wall, the second electrode terminal is located between the first electrode terminal and the pressure relief mechanism, and in the same column of battery cells, the pressure relief mechanisms of the battery cells are staggered.

14. The battery according to any one of claims 1 to 8, characterized in that: The plurality of battery cells are connected in series via the electrical connector.

15. The battery according to any one of claims 1 to 8, characterized in that: The sampling member extends along the second direction.

16. The battery according to any one of claims 1 to 8, characterized in that: The sampling member includes at least one of a flexible circuit board and a rigid circuit board.

17. The battery according to any one of claims 1 to 8, characterized in that: The battery cell has a second side wall arranged opposite to the first side wall, and the second side wall is provided with the pressure relief mechanism.

18. The battery according to any one of claims 1 to 8, characterized in that: The battery cell is provided with a temperature sensor for acquiring temperature information, and the temperature sensor is connected to the sampling member.

19. A battery cell, characterized in that: include: A housing having a first side wall, wherein the first side wall is provided with a pressure relief mechanism and a first electrode terminal and a second electrode terminal with different polarities, wherein the second electrode terminal is located between the first electrode terminal and the pressure relief mechanism; The electrode assembly is located in the housing, and the first electrode terminal and the second electrode terminal are electrically connected to the electrode assembly to achieve input and output of electric energy.

20. An electrical device, characterized in that: The electrical device comprises the battery according to any one of claims 1 to 18; and / or the battery cell according to claim 19.

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