Battery module, battery device and electric equipment

Abstract

The utility model discloses a battery module, a battery device and electric equipment. The battery module provided by the utility model comprises a battery monomer and a temperature acquisition assembly, the battery monomer comprises a shell and a protective film, the protective film covers the outer wall surface of the shell, a detection area is formed on the protective film, and part of the shell is exposed out of the outer side, deviating from the shell, of the protective film through the detection area; the temperature acquisition assembly is in contact with the shell through the detection area to detect the temperature of the shell. Through the above implementation mode, the temperature acquisition assembly can directly contact with the shell of the battery monomer through the detection area and directly detect the temperature of the shell of the battery monomer, so that the temperature of the battery monomer can be more accurately detected, and the deviation of a temperature detection result is reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery module, battery device and electrical equipment. Background Technology

[0002] Energy conservation and emission reduction are key to sustainable development, which in turn promotes the adjustment of the energy structure and drives the development and application of battery technology. The key to the development of battery technology lies in electrochemical energy storage technology. Due to its advantages such as high energy density, good cycle capability, high operating voltage, environmental friendliness, and low self-discharge, it has been widely used in portable electronics, electric vehicles, and energy storage systems.

[0003] During battery use, temperature monitoring is required to enable early warning of thermal runaway and / or battery life assessment. However, current temperature sensors are usually indirectly connected to individual battery cells, such as connecting the temperature sensor to the battery module's heat exchanger to indirectly detect the temperature of individual cells, resulting in significant deviations in the detection results. Utility Model Content

[0004] The main objective of this application is to provide a battery module, battery device, and electrical equipment, which aims to solve the aforementioned technical problems existing in the prior art.

[0005] To address the aforementioned issues, this application provides a battery module comprising a battery cell and a temperature acquisition component. The battery cell includes a housing and a protective film, with the protective film covering the outer wall of the housing and forming a detection area. A portion of the housing is exposed through the detection area on the outer side of the protective film away from the housing. The temperature acquisition component contacts the housing through the detection area to detect the temperature of the housing.

[0006] In some embodiments, the temperature acquisition component includes an adhesive and a acquisition part, the adhesive being disposed on the housing, and the acquisition part being connected to the housing via the adhesive.

[0007] In some embodiments, the battery cell is cylindrical in shape, the detection area is formed on the sidewall of the battery cell, and the surface of the collection part facing the outer casing is an arc-shaped surface, through which the collection part is connected to the outer casing.

[0008] In some embodiments, the battery module further includes a cooling plate connected to the battery cell and disposed on the side of the battery cell away from the temperature acquisition component.

[0009] In some embodiments, the number of battery cells is multiple, and the battery module further includes a support component. The multiple battery cells are arranged sequentially along a first direction, and the support component is fixedly connected to the multiple battery cells respectively, so that the multiple battery cells are relatively fixed.

[0010] In some embodiments, the support assembly includes an end plate, the end plate is arranged at at least one end of the plurality of battery cells in the first direction.

[0011] In some embodiments, the number of end plates is two, the two end plates are arranged at two ends of the plurality of battery cells in the first direction respectively, and the support assembly further includes a support plate, the support plate extends along the first direction and is connected to the two end plates respectively.

[0012] To solve the above problems, the application further provides a battery device, which comprises a box body and the battery module.

[0013] In some embodiments, the battery device further comprises a battery management system, the battery management system is electrically connected to the battery module.

[0014] To solve the above problems, the application provides a power consumption equipment, which comprises the battery device.

[0015] Compared with the prior art, the battery module provided by the application comprises battery cells and a temperature acquisition assembly, the battery cells comprise a shell and a protective film, the protective film covers the outer wall surface of the shell, and the protective film forms a detection area, and part of the shell is exposed to the outer side of the protective film away from the shell through the detection area; the temperature acquisition assembly is in contact with the shell through the detection area to detect the temperature of the shell. Through the above-mentioned implementation, the temperature acquisition assembly can be in direct contact with the shell of the battery cell through the detection area and directly detect the shell temperature of the battery cell, so that the temperature of the battery cell can be more accurately detected, and the deviation of the temperature detection result is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 is a structural schematic diagram of a vehicle according to one or more embodiments of the application;

[0018] Figure 2 is a disassembled schematic diagram of a battery device according to one or more embodiments of the application;

[0019] Figure 3 is a structural schematic diagram of a battery device according to one or more embodiments of the application;

[0020] Figure 4 is a structural schematic diagram of a battery cell according to one or more embodiments of the application;

[0021] Figure 5 is a first perspective view of a battery module according to one or more embodiments of the present application;

[0022] Figure 6 is a second perspective view of a battery module according to one or more embodiments of the present application.

[0023] Reference signs: vehicle 1; battery device 2; box 200; first part 210; second part 220; accommodating space 230; controller 3; motor 4; battery module 5; battery management system 6; battery cell 10; shell 11; housing 111; end cover 112; protective film 12; detection area 121; electrode assembly 13; temperature collection assembly 20; adhesive 21; collection part 22; arc surface 221; cooling plate 30; support assembly 40; end plate 41; support plate 42; first direction x1; second direction x2. DETAILED DESCRIPTION

[0024] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0026] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0027] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] In the description of the embodiments of the present application, the term "and / or" is merely an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are an "or" relationship.

[0029] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0030] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0031] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0032] At present, from the development of market situation, the application of battery is more and more extensive. The battery is not only applied to the energy storage power supply system of hydropower, thermal power, wind power and solar power station, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of the battery, the demand of its market is also increasing.

[0033] Batteries referred to in the art can be classified as primary batteries and secondary batteries depending on whether they can be recharged. Primary batteries, also known as "disposable" batteries and primary cells, cannot be recharged and must be disposed of after their charge is depleted. Secondary batteries, also known as rechargeable batteries or secondary cells, are manufactured and processed differently from primary batteries and have the advantage of being able to be used multiple times after being recharged. Secondary batteries have a higher load current capacity than most primary batteries. Common types of secondary batteries include lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries. Lithium-ion batteries have the advantages of being lightweight, having a large capacity (1.5 to 2 times the capacity of a nickel-metal hydride battery of the same weight), having no memory effect, and having a very low self-discharge rate. As a result, even though they are relatively expensive, they are widely used. Lithium-ion batteries are also widely used in electric vehicles and hybrid vehicles. Lithium-ion batteries used for such purposes have a relatively low capacity, but have a high output, a high charging current, and a long service life, although they are more expensive.

[0034] The batteries described in the embodiments of the present application refer to secondary batteries or primary batteries. In the following, the embodiments of the present application will be described mainly with reference to lithium-ion batteries. It should be understood that the embodiments of the present application are applicable to any other suitable type of secondary battery. The batteries referred to in the embodiments disclosed in the present application can be directly or indirectly applied to suitable devices to power the devices.

[0035] The present application provides a power consuming device, which can include but is not limited to a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, an electric vehicle, an electric car, a ship, a spacecraft, etc. The electric toy can include a stationary or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, an electric plane toy, etc. The spacecraft can include an airplane, a rocket, a space shuttle, a spacecraft, etc. The power consuming device can include a battery device, and the power consuming device can provide power through the battery device to realize corresponding functions.

[0036] Taking an electric vehicle as an example of a power consuming device, the electric vehicle can include a battery device.

[0037] Please refer to Figure 1 , Figure 1 is a structural schematic diagram of a vehicle according to one or more embodiments of the present application.

[0038] The vehicle 1 can be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid automobile, or a range extended automobile, etc. The vehicle 1 is internally provided with a battery device 2, which can be arranged at the bottom, the head, or the tail of the vehicle 1. The battery device 2 can be used for power supply of the vehicle 1, for example, the battery device 2 can be used as an operating power source of the vehicle 1. The vehicle 1 can further include a controller 3 and a motor 4, and the controller 3 is used to control the battery device 2 to supply power to the motor 4, for example, to meet the power demand of the vehicle 1 during starting, navigation, and driving.

[0039] In some embodiments of the present application, the battery device 2 can not only be used as an operating power source of the vehicle 1, but also be used as a driving power source of the vehicle 1, to replace or partially replace fuel or natural gas to provide driving power for the vehicle 1.

[0040] In order to improve the performance of the electric equipment, the present application further provides a battery device, which is described below with reference to Figures 2-3 , Figure 2 is a disassembled schematic view of a battery device according to one or more embodiments of the present application; Figure 3 is a structural schematic view of a battery device according to one or more embodiments of the present application.

[0041] The shape of the battery device 2 can include but is not limited to a square cylinder or any other shape.

[0042] In some embodiments, the battery device 2 can include a box body 200 and a battery module 5, and the battery module 5 is accommodated in the box body 200. The box body 200 is used to provide a containing space 230 for the battery module 5, and the box body 200 can adopt various structures. In some embodiments, the box body 200 can include a first part 210 and a second part 220, and the first part 210 and the second part 220 are mutually covered to jointly define the containing space 230 for accommodating the battery monomer 10. The second part 220 can be a hollow structure with one end open, and the first part 210 can be a plate structure, which is covered on the open side of the second part 220 to jointly define the containing space 230 with the second part 220; or the first part 210 and the second part 220 can both be hollow structures with one side open, and the open side of the first part 210 is covered on the open side of the second part 220.

[0043] In the battery device 2, the battery modules 5 can be multiple, and the multiple battery modules 5 can be connected in series, in parallel, or in a mixed manner. The mixed manner means that the multiple battery modules 5 are connected in series and in parallel. The multiple battery modules 5 can be directly connected in series, in parallel, or in a mixed manner, and the whole of the multiple battery modules 5 is accommodated in the box body 200. The battery device 2 can further include other structures, for example, the battery device 2 can further include a current collecting component for realizing electrical connection between the multiple battery modules 5.

[0044] In some embodiments, the battery device 2 further includes a battery management system 6 electrically connected with the battery modules 5. The battery management system 6 (BMS) can have a great influence on the safe operation of the whole vehicle 1, the selection of the whole vehicle control strategy, the selection of the charging mode, and the operating cost. Whether during the operation of the vehicle 1 or during the charging process, the battery management system 6 needs to complete the real-time monitoring and fault diagnosis of the state of the battery system, and inform the whole vehicle controller 3 or the charger through the bus, so as to adopt a reasonable control strategy to achieve the purpose of effectively and efficiently using the battery system. In this embodiment, the battery management system 6 can be electrically connected with one battery module 5 or multiple battery modules 5 at the same time, so as to monitor the temperature, voltage, and module current of the multiple battery modules 5 through the battery management system 6, and perform battery balancing control and fault diagnosis, etc. Thus, the battery management system 6 can provide a control signal for the battery module 5, so as to manage the working state of the battery module 5 according to the detection information of the battery module 5.

[0045] In combination Figures 4-6 , Figure 4 is a structural schematic diagram of a battery monomer according to one or more embodiments of the present application; Figure 5 is a first perspective schematic diagram of a battery module according to one or more embodiments of the present application; Figure 6 is a second perspective schematic diagram of a battery module according to one or more embodiments of the present application.

[0046] To solve the above problems, the present application provides a battery module 5, which comprises: a battery monomer 10, comprising an outer shell 11 and a protective film 12, the protective film 12 covers the outer wall surface of the outer shell 11, and the protective film 12 is formed with a detection area 121, part of the outer shell 11 is exposed to the outside of the protective film 12 away from the outer shell 11 through the detection area 121; and a temperature acquisition assembly 20, which is in contact with the outer shell 11 through the detection area 121 to detect the temperature of the outer shell 11.

[0047] The battery cell 10 can refer to the smallest unit that constitutes the battery module 5, and in the battery module 5, the battery cell 10 can be one or more, and when the battery cell 10 is multiple, the multiple battery cells 10 can be connected in series or in parallel or in a mixed connection.

[0048] The battery cell 10 can be in any shape, for example, the shape of the battery cell 10 can include but is not limited to a square cylinder or any other shape.

[0049] The battery cell 10 can be made in a stacking type and a winding type, i.e., the battery cell 10 is divided into two types of stacking battery and winding battery. The stacking battery has uniform current collection effect, smaller battery internal resistance, and larger specific power, but in order to improve the precision, the mold precision requirement is very high, the equipment investment is high, and the process is relatively complex, and the production efficiency is low. The winding battery is simple to make, and the device precision requirement in the process of manufacturing and assembling is general, the production efficiency is high, and the cost is relatively low. In terms of performance, the winding battery has excellent high and low temperature performance, very fast charging, super long life, stable high output voltage, and strong structure and shock resistance.

[0050] The battery cell 10 can include a housing 11, an electrode assembly 13, and other functional components, and the housing 11 includes an end cover 112 and a shell 111.

[0051] The end cover 112 refers to a component that covers the opening of the shell 111 to isolate the internal environment of the battery cell 10 from the external environment. Without limitation, the shape of the end cover 112 can be adapted to the shape of the shell 111 to fit the shell 111. Optionally, the end cover 112 can be made of a material with certain hardness and strength, such as aluminum alloy, so that the end cover 112 is not easy to deform when subjected to extrusion and collision, so that the battery cell 10 can have higher structural strength, and the safety performance can also be improved. The end cover 112 can be provided with functional components such as electrode terminals. The electrode terminals can be used for electrical connection with the electrode assembly 13 for output or input of the electrical energy of the battery cell 10. In some embodiments, the electrode terminals can include a pole. The pole can include a positive pole and a negative pole for output of current and connection with an external circuit. In some embodiments, the end cover 112 can also be provided with a pressure relief device for relieving internal pressure when the internal pressure or temperature of the battery cell 10 reaches a threshold value. The material of the end cover 112 can also be various, such as the material of the end cover 112 including but not limited to copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. In some embodiments, an insulating member can also be provided on the inner side of the end cover 112, which can be used to isolate the electrical connection components in the shell 111 from the end cover 112 to reduce the risk of short circuit. Exemplarily, the insulating member can be plastic, rubber, etc.

[0052] The housing 111 is a component for fitting the end cover 112 to form an internal environment of the battery cell 10, where the formed internal environment can be used to contain the electrode assembly 13, electrolyte, and other components. The housing 111 and the end cover 112 can be independent components, and an opening can be provided on the housing 111, and the end cover 112 is fitted to cover the opening to form the internal environment of the battery cell 10. Without limitation, the end cover 112 and the housing 111 can also be integrated, specifically, the end cover 112 and the housing 111 can form a common connecting surface before other components are put into the housing, and when it is necessary to seal the inside of the housing 111, the end cover 112 is fitted to cover the housing 111. The housing 111 can be of various shapes and sizes, such as a cuboid, a cylinder, a hexagonal prism, etc. Specifically, the shape of the housing 111 can be determined according to the specific shape and size of the electrode assembly 13. The material of the housing 111 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc.

[0053] The electrode assembly 13 is a component in which electrochemical reactions occur in the battery cell 10. One or more electrode assemblies 13 can be contained in the housing 111. The electrode assembly 13 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and an insulating member is usually provided between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet and the negative electrode sheet have portions with active materials that constitute the main body of the electrode assembly 13, and portions without active materials of the positive electrode sheet and the negative electrode sheet each constitute a tab. The positive tab and the negative tab can be located together at one end of the main body or at two ends of the main body, respectively. During charging and discharging of the battery, the positive active material and the negative active material react with the electrolyte, and the tabs are connected to the electrode terminal to form a current loop.

[0054] In some embodiments, the electrode assembly 13 includes a positive electrode, a negative electrode, and an insulating member. During charging and discharging of the battery cell 10, active ions (e.g., lithium ions) are embedded and extracted between the positive electrode and the negative electrode. The insulating member is provided between the positive electrode and the negative electrode, and can prevent the positive and negative electrodes from short-circuiting while allowing the active ions to pass through.

[0055] The protective film 12 covers the outer wall surface of the shell 11, and can be used to protect the battery monomer 10. The protective film 12 can have good waterproof and dustproof performance, thereby reducing the influence of dust and water vapor on the battery monomer 10. The protective film 12 can also have good tensile performance, heat insulation performance and insulation performance, thereby effectively relieving the risk of physical damage and short circuit of the battery monomer 10 during production, transportation and use. The material of the protective film 12 can include, but is not limited to, polyethylene terephthalate (PET) or polyolefin material (such as polypropylene, polyethylene) and the like. The protective film 12 can be a battery blue film. The protective film 12 is formed with a detection area 121, so that part of the shell 11 is exposed through the detection area 121. For example, an opening is formed in the protective film 12, and the detection area 121 is formed through the opening, so that the temperature collection assembly 20 directly contacts the shell 11 through the detection area 121.

[0056] The temperature collection assembly 20 can be used to collect the temperature of the battery monomer 10. The temperature collection assembly 20 can include a temperature sensor. In some application scenarios, the temperature collection assembly 20 can also be in communication connection with the battery management system 6, so that the battery management system 6 obtains the temperature of the battery monomer 10 and performs targeted management on the working state of the battery module 5 according to the temperature information. The temperature collection assembly 20 directly contacts the shell 11 of the battery monomer 10 through the detection area 121, thereby facilitating the temperature collection assembly 20 to accurately collect the temperature of the battery monomer 10. Compared with the temperature collection assembly 20 indirectly detecting the temperature of the battery monomer 10 by being connected to the battery tab, the detection error is smaller and the accuracy is higher. In some application scenarios, the temperature collection assembly 20 can be directly arranged on the shell 111 of the battery monomer 10. Compared with being arranged on the end cover 112 of the battery monomer 10, the temperature collection assembly 20 arranged on the shell 111 of the battery monomer 10 is more convenient to install, and can reduce the space occupation of other components on the end cover 112 of the battery monomer 10, thereby saving space.

[0057] Through the above embodiment, the temperature collection assembly 20 can directly contact the shell 11 of the battery monomer 10 through the detection area 121 and directly detect the temperature of the shell 11 of the battery monomer 10, thereby being able to more accurately detect the temperature of the battery monomer 10 and reducing the deviation of the temperature detection result.

[0058] In some embodiments, the temperature collection assembly 20 comprises an adhesive 21 and a collection part 22, the adhesive 21 is arranged on the shell 11, and the collection part 22 is connected to the shell 11 through the adhesive 21. The adhesive 21 has adhesion, and the material of the adhesive 21 can include but is not limited to epoxy resin glue, polyurethane glue, etc. The adhesive 21 can also have good heat conduction and heat resistance, so that the collection part 22 can more accurately collect the temperature of the shell 11 of the battery monomer 10. The collection part 22 can include but is not limited to a temperature collection nickel sheet, etc. Thus, the shell 11 and the collection part 22 are bonded by the adhesive 21, which improves the connection stability of the collection part 22 and the shell 11, and has a simple structure and saves costs.

[0059] In some embodiments, the battery monomer 10 is in a cylindrical shape, the detection area 121 is formed on the side wall of the battery monomer 10, the side surface of the collection part 22 facing the shell 11 is an arc surface 221, and the collection part 22 is connected to the shell 11 through the arc surface 221. It can be understood that the battery monomer 10 can be a cylindrical battery, and the side wall of the cylindrical battery is arc-shaped. If the side surface of the collection part 22 facing the shell 11 is a flat surface such as a square surface, the contact area with the shell 11 is small, and the risk of disconnection is high. Thus, the side surface of the collection part 22 facing the shell 11 is arranged as an arc surface, which facilitates the collection part 22 to better match the shape of the shell 11 of the cylindrical battery, thereby increasing the contact area between the collection part 22 and the shell 11 of the battery monomer 10, and further improving the connection stability of the collection part 22 and the battery monomer 10, and further improving the temperature collection accuracy of the collection part 22.

[0060] In some embodiments, the battery module 5 further comprises a cooling plate 30 connected to the battery monomer 10 and arranged on the side of the battery monomer 10 away from the temperature collection assembly 20. The cooling plate 30 can be used to cool the battery monomer 10, and the material of the cooling plate 30 can include but is not limited to copper, aluminum, aluminum brazing composite material or any other material with good heat conduction performance, etc. The cooling plate 30 can be formed with a cooling flow channel, which can be used to guide the flow of cooling medium, thereby improving the cooling effect of the cooling plate 30. The cooling medium can include but is not limited to water, brine, lye, mechanical oil, nitrate, polyvinyl alcohol, three-nitrate aqueous solution, water-soluble quenching agent, etc. Thus, the battery monomer 10 can be cooled by the cooling plate 30, which reduces the risk of the battery monomer 10 being in an abnormal working state due to overheating, and is beneficial to improve the safety and service life of the battery module 5.

[0061] In some embodiments, the number of the battery cells 10 is multiple, and the battery module 5 further comprises a support assembly 40, the multiple battery cells 10 are arranged in sequence along a first direction x1, and the support assembly 40 is fixedly connected with the multiple battery cells 10 respectively, so as to relatively fix the multiple battery cells 10. The multiple battery cells 10 are arranged in sequence along the first direction x1, and the support assembly 40 is used for fixedly connecting the multiple battery cells 10, so as to provide support and protection for the multiple battery cells 10. For example, the support assembly 40 can be arranged around the multiple battery cells 10 and surround a support space for supporting the battery cells 10. Thus, the support assembly 40 can provide support and fixation for the multiple battery cells 10, so as to improve the arrangement stability of the multiple battery cells 10. In some embodiments, the battery cells 10 are further arranged in sequence along a second direction x2 perpendicular to the first direction x1. For example, the battery cells 10 can be divided into a first column and a second column, the battery cells 10 in the first column and the second column are arranged along the first direction x1, and the first column and the second column are arranged in sequence along the second direction x2, so as to further facilitate reasonable arrangement of the multiple battery cells 10. Further, in this embodiment, the cooling plate 30 can also be arranged between the first column and the second column and in contact with each battery cell 10 in sequence, so as to improve the cooling effect of the cooling plate 30.

[0062] In some embodiments, the support assembly 40 comprises an end plate 41 arranged at at least one end of the multiple battery cells 10 along the first direction x1. The end plate 41 can be used to define the arrangement boundary of the multiple battery cells 10 along the first direction x1 and provide support for the battery cells 10 at the end of the multiple battery cells 10. In some application scenarios, the end plate 41 can also be used to connect with the box body 200, so as to improve the installation stability of the battery module 5 in the accommodation space 230.

[0063] In some embodiments, the number of the end plates 41 is two, and the two end plates 41 are arranged at two ends of the multiple battery cells 10 along the first direction x1 respectively. The support assembly 40 further comprises a support plate 42 extending along the first direction x1 and connected with the two end plates 41 respectively. It can be understood that the two end plates 41 are arranged at the two ends of the multiple battery cells 10 along the first direction x1 respectively, so as to clamp the multiple battery cells 10 between the two end plates 41 and define the arrangement boundary of the multiple battery cells 10 along the first direction x1. The support plate 42 extends along the first direction x1 and is connected with the two end plates 41 respectively, so as to relatively fix the two end plates 41 and further define the installation position of the multiple battery cells 10 and provide support for the multiple battery cells 10 in cooperation with the end plates 41.

[0064] In summary, the battery module 5 provided by the application comprises a battery monomer 10 and a temperature acquisition assembly 20. The battery monomer 10 comprises a shell 11 and a protective film 12. The protective film 12 covers the outer wall surface of the shell 11. The protective film 12 is formed with a detection area 121. Part of the shell 11 is exposed to the outer side of the protective film 12 away from the shell 11 through the detection area 121. The temperature acquisition assembly 20 is in contact with the shell 11 through the detection area 121 to detect the temperature of the shell 11. Through the above-mentioned embodiments, the temperature acquisition assembly 20 can be in direct contact with the shell 11 of the battery monomer 10 through the detection area 121 and directly detect the temperature of the shell 11 of the battery monomer 10, so that the temperature of the battery monomer 10 can be more accurately detected, and the deviation of the temperature detection result is reduced.

[0065] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, and not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application, and they should be covered in the scope of the claims and the specification of the application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The 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 module, characterized by, The battery module comprises: a battery cell comprising a shell and a protective film, the protective film covering an outer wall surface of the shell, and the protective film being formed with a detection area, part of the shell being exposed to an outer side of the protective film away from the shell through the detection area; a temperature collection assembly being in contact with the shell through the detection area to detect a temperature of the shell.

2. The battery module of claim 1, wherein, The temperature collection assembly comprises an adhesive and a collection part, the adhesive being arranged on the shell, and the collection part being connected to the shell through the adhesive.

3. The battery module of claim 2, wherein, The battery cell is in a cylindrical shape, the detection area being formed on a side wall of the battery cell, and a side surface of the collection part facing the shell being an arc surface, the collection part being connected to the shell through the arc surface.

4. The battery module of claim 1, wherein, The battery module further comprises a cooling plate, the cooling plate being connected to the battery cell and arranged on a side of the battery cell away from the temperature collection assembly.

5. The battery module of claim 1, wherein, The number of the battery cells is plural, the battery module further comprising a support assembly, the plural battery cells being arranged in sequence along a first direction, and the support assembly being fixedly connected to the plural battery cells to relatively fix the plural battery cells.

6. The battery module of claim 5, wherein, The support assembly comprises an end plate, the end plate being arranged on at least one end of the plural battery cells in the first direction.

7. The battery module of claim 6, wherein, The number of the end plates is two, the two end plates being arranged on two ends of the plural battery cells in the first direction respectively, and the support assembly further comprising a support plate, the support plate extending along the first direction and being connected to the two end plates respectively.

8. A battery device characterized by comprising: The battery device comprises a box and the battery module as claimed in any one of claims 1-7, the box being formed with an accommodating space, and the battery module being arranged in the accommodating space.

9. The battery device of claim 8, wherein, The battery device further comprises a battery management system, the battery management system being electrically connected to the battery module.

10. An electric device, characterized by The electric equipment comprises the battery device as claimed in any one of claims 8 or 9.

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