CN220710519U - Battery module, battery and power consumption device - Google Patents

Abstract

The application provides a battery module, battery and power consumption device, this battery module include heat insulating board, two end plates and a plurality of battery monomer, and two end plates set up along first direction interval, and a plurality of battery monomer stacks are between two end plates, are equipped with the heat insulating board between end plate and the battery monomer. In the structure, as the heat insulation plate is clamped between the end plate and the battery monomer, the heat insulation plate can separate heat transfer between the battery monomer and the end plate, so that the battery monomer which is close to the partition plate in the battery monomers is not easy to change in temperature due to contact with the end plate, the consistency of the temperature of the battery monomers in the battery module is improved, and the service life of the battery module is prolonged.

Description

Battery module, battery and power consumption device

Technical Field

The present disclosure relates to battery technologies, and in particular, to a battery module, a battery, and an electric device.

Background

The battery has the advantages of high specific energy, high power density and the like, and is widely used in electronic equipment and vehicles, such as mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric tools and the like.

With the continuous expansion of the application range of batteries in various fields, people have put higher and higher demands on the service life of the batteries. How to extend the life of a battery has been an important direction of investigation by those skilled in the art.

Disclosure of Invention

In view of the above, the present application provides a battery module, a battery and an electric device, where the temperature uniformity of the battery module is better, which is beneficial to prolonging the service life of the battery.

In a first aspect, some embodiments of the present application provide a battery module including a thermal insulation plate, two end plates and a plurality of battery cells, the two end plates being disposed at intervals along a first direction, the plurality of battery cells being stacked between the two end plates, the thermal insulation plate being disposed between the end plates and the battery cells.

In the structure, as the heat insulation plate is clamped between the end plate and the battery monomer, the heat insulation plate can separate heat transfer between the battery monomer and the end plate, so that the battery monomer which is close to the partition plate in the battery monomers is not easy to change in temperature due to contact with the end plate, the consistency of the temperature of the battery monomers in the battery module is improved, and the service life of the battery module is prolonged.

According to the battery module provided by some embodiments of the application, the end plate is provided with the concave part along the first direction towards the surface of the battery cell, at least part of the heat insulation plate is positioned in the concave part, the height of the heat insulation plate protruding from the end plate can be reduced, the flatness of the surface in contact with the battery cell can be improved, the occurrence of the situation that the local stress of the surface of the battery cell is overlarge can be reduced, and the possibility that the surface of the battery cell is crushed can be reduced.

According to the battery module provided by some embodiments of the application, the heat insulating plate faces towards the surface of the battery monomer and the end plate faces towards the surface of the battery monomer, so that the surface contacted with the battery monomer is a flat plane, the surface of the battery monomer is uniformly stressed, the occurrence of the situation that the local stress of the surface of the battery monomer is overlarge is reduced, and the possibility that the surface of the battery monomer is crushed is reduced.

According to the battery module provided by some embodiments of the present application, the recess is spaced apart from the edge of the surface of the heat insulating plate facing the battery cell such that the outer circumference of the recess is formed with a boss. Because the boss surrounds the concave part, the boss can limit the heat insulating plate in the state that the heat insulating plate is arranged in the concave part, and the risk of moving the heat insulating plate can be reduced.

According to the battery module provided by some embodiments of the application, the end plate is provided with the reinforcing rib, the reinforcing rib is arranged on the surface of the end plate, deviating from the battery cell along the first direction, so that the structural strength of the end plate can be improved, and the end plate can apply larger acting force to a plurality of battery cells, so that the end plate can better control the expansion of the battery cells.

In a second aspect, some embodiments of the present application provide a battery, where the battery includes a battery module and a case provided in any one of the above technical solutions, and the case encloses an accommodating space, and the battery module is disposed in the accommodating space.

According to the battery provided by some embodiments of the application, the case body comprises a first wall and a second wall, and the first wall and the second wall are mutually connected to enclose an accommodating space.

According to the battery provided by some embodiments of the application, the heat exchange flow channel is arranged in the first wall, the end plate of the battery module is connected to the first wall, and the battery monomer of the battery module is in contact with the first wall, so that heat exchange can be performed between the heat exchange medium and the battery monomer through the first wall, the battery monomer is in a proper temperature range, and the stability of the operation of the battery monomer is maintained; meanwhile, the heat exchange flow channel is integrated in the first wall of the box body, so that the use of an additional heat exchange plate can be reduced, the number of parts in the battery can be reduced, and the cost of the battery can be reduced.

According to the battery provided by some embodiments of the application, the battery further comprises a connecting seat, and the end plate is connected to the first wall through the connecting seat, so that the end plate is firmly connected in the box body and is not easy to shake due to external impact.

According to the battery provided by some embodiments of the application, the battery further comprises a heat insulating piece, wherein the heat insulating piece is clamped between the end plate and the connecting seat, so that heat transfer between the connecting seat and the end plate can be blocked by the heat insulating piece.

In a third aspect, some embodiments of the present application provide an electrical device, where the electrical device includes a battery provided in any one of the above-mentioned aspects, and the battery is configured to provide electrical energy.

The technical scheme provided by the embodiment of the disclosure at least brings the following beneficial effects:

the application provides a battery module, this battery module include heat insulating board, two end plates and a plurality of battery monomer, and two end plates set up along first direction interval, and a plurality of battery monomer stacks are equipped with the heat insulating board between two end plates between end plate and the battery monomer. In the structure, as the heat insulation plate is clamped between the end plate and the battery monomer, the heat insulation plate can separate heat transfer between the battery monomer and the end plate, so that the battery monomer which is close to the partition plate in the battery monomers is not easy to change in temperature due to contact with the end plate, the consistency of the temperature of the battery monomers in the battery module is improved, and the service life of the battery module is prolonged.

The application also provides a battery which has longer service life due to the battery module provided by the technical scheme.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification in order to make the technical means of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the present application more clearly understood, the following detailed description of the present application will be given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the present application;

FIG. 2 is a split view of a battery provided in some embodiments of the present application;

FIG. 3 is a split view of a battery module provided in some embodiments of the present application;

fig. 4 is a split view at an end plate of a battery module provided in some embodiments of the present application;

fig. 5 is a schematic view illustrating an internal structure of a battery according to some embodiments of the present application;

fig. 6 is an enlarged view at a in fig. 5.

Reference numerals in the specific embodiments are as follows:

10. a case; 101. a first case; 102. a second case; 103. an accommodation space; 104. a first wall; 1041. a heat exchange flow passage; 105. a second wall; 20. a battery module; 201. a battery cell; 202. an end plate; 2021. a concave portion; 2022. reinforcing ribs; 203. a heat insulating plate; 30. a connecting seat; 40. a heat insulating member; 1000. a vehicle; 100. a battery; 200. a controller; 300. a motor; x, first direction.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

It should be noted that unless otherwise indicated, technical or scientific terms used in the embodiments of the present application should be given the ordinary meanings as understood by those skilled in the art to which the embodiments of the present application belong.

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

Furthermore, the technical terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or be integrated; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of embodiments of the present application, unless explicitly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediary. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Currently, the more widely the battery is used in view of the development of market situation. The battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles, and the like, as well as a plurality of fields such as military equipment, aerospace, and the like. Embodiments of the present application refer to a battery that includes one or more battery modules, which refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity.

The battery cell may be a secondary battery cell, and the secondary battery cell refers to a battery cell that can activate an active material by charging after discharging the battery cell and continue to use.

The battery cell can be lithium ion battery cell, sodium lithium ion battery cell, lithium metal battery cell, sodium metal battery cell, lithium sulfur battery cell, magnesium ion battery cell, nickel-hydrogen battery cell, nickel-cadmium battery cell, lead storage battery cell, etc.

With the increasing use range of batteries in various industries, the service life of batteries in the market is also increasing. How to extend the service life of a battery has been an important research direction for those skilled in the art.

In order to prolong the service life of a battery, embodiments of the application provide a battery module, which comprises a heat insulation plate, two end plates and a plurality of battery monomers, wherein the two end plates are arranged at intervals along a first direction, the plurality of battery monomers are stacked between the two end plates, and the heat insulation plate is arranged between the end plates and the battery monomers. In the structure, as the heat insulation plate is clamped between the end plate and the battery monomer, the heat insulation plate can separate heat transfer between the battery monomer and the end plate, so that the battery monomer which is close to the partition plate in the battery monomers is not easy to change in temperature due to contact with the end plate, the consistency of the temperature of the battery monomers in the battery module is improved, and the service life of the battery module is prolonged.

The battery module described in the embodiments of the present application is applicable to a battery and an electric device using the battery.

The electric device may be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool, or the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others. The embodiment of the application does not limit the electric device in particular.

For convenience of description, the following embodiment will take an electric device according to an embodiment of the present application as an example of the vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present application. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. The battery 100 is provided in the interior of the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may be used as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

In some embodiments of the present application, battery 100 may not only serve as an operating power source for vehicle 1000, but may also serve as a driving power source for vehicle 1000, instead of or in part instead of fuel oil or natural gas, to provide driving power for vehicle 1000.

Referring to fig. 2, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present application. The battery 100 includes a case 10 and a battery module 20, and the battery module 20 is accommodated in the case 10. Wherein the case 10 is used to provide an accommodation space for the battery module 20. The battery modules 20 in the battery 100 may be one or a plurality of battery modules 20, and the plurality of battery modules 20 may be connected in series or parallel or in series-parallel, and the series-parallel refers to that the plurality of battery modules 20 are connected in series or parallel. As shown in fig. 3, the battery module 20 may include a plurality of battery cells 201 that may be connected in series, parallel, or a combination of two, where the plurality of battery cells 201 are connected in series and parallel, and the plurality of battery cells 201 are stacked between two end plates 202, and the two end plates 202 can clamp the plurality of battery cells 201 to control expansion of the battery cells 201.

The case 10 may include a first case 101 and a second case 102, the first case 101 and the second case 102 being overlapped with each other to define a placement space for accommodating the battery cell 201. The first casing 101 and the second casing 102 may be various shapes, such as a rectangular parallelepiped, a cylinder, and the like. The first case 101 may have a hollow structure with one side opened, and the second case 102 may have a hollow structure with one side opened, and the open side of the second case 102 is closed to the open side of the first case 101 to form the case 10 having a space for placement.

The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for making electrical connection between the plurality of battery cells 201.

Wherein each battery cell 201 may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cell 201 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Some embodiments of the present application provide a battery module 20, as shown in fig. 3, the battery module 20 includes a heat insulation plate 203, two end plates 202 and a plurality of battery cells 201, the two end plates 202 are disposed at intervals along a first direction X, the plurality of battery cells 201 are stacked between the two end plates 202, and the heat insulation plate 203 is disposed between the end plates 202 and the battery cells 201.

The end plate 202 may be a plate-like member having a preset thickness. By arranging the two end plates 202 at intervals in the first direction X, a space for arranging the battery cells 201 can be formed between the two end plates 202.

The battery cell 201 may be a unit that stores electric energy and provides electric energy in the battery module 20. The battery modules 20 may have a plurality of battery cells 201, and the plurality of battery cells 201 may be connected in series, in parallel, or in series-parallel, where the series-parallel refers to that the plurality of battery cells 201 are connected in both series and parallel.

The battery cell 201 generally includes an electrode assembly, an electrolyte, and the like. The electrode assembly includes a positive electrode and a negative electrode. During charge and discharge of the battery cell 201, active ions (e.g., lithium ions) are inserted and extracted back and forth between the positive electrode and the negative electrode. The case is used to encapsulate the electrode assembly, the electrolyte, and the like. The shell can be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), an aluminum-plastic film or the like.

The plurality of battery cells 201 may be stacked in the first direction X to facilitate forming an integral module. By stacking the plurality of battery cells 201 between the two end plates 202, it is convenient to apply a force to the plurality of battery cells 201 through the end plates 202 at both ends, so that the plurality of battery cells 201 are formed into a unitary structure. The end plate 202 may be used to control expansion of the battery cell 201, and may also provide mounting points for other components such as wiring harnesses.

Illustratively, two adjacent battery cells 201 and the battery cell 201 and the end plate 202 may be connected by an adhesive such that the plurality of battery cells 201 and the end plate 202 can form a unitary structure having a certain structural strength.

The heat insulating plate 203 may be a plate-shaped member having heat insulating capability such that heat transfer between the battery cell 201 and the end plate 202 can be blocked by the heat insulating plate 203 by disposing the heat insulating plate 203 between the end plate 202 and the battery cell 201. Illustratively, the heat shield 203 may be made of a heat shield material such that the heat shield 203 has good heat shield capability. The heat insulating plate 203 can be made of epoxy resin and polyurethane, so that the heat insulating plate 203 has good heat insulating capability and good mechanical property, and can bear the acting force between the end plate 202 and the battery cell 201.

In the above structure, since the insulating plate 203 is sandwiched between the end plate 202 and the battery cells 201, the insulating plate 203 can separate heat transfer between the battery cells 201 and the end plate 202, so that the battery cells 201 close to the separator among the battery cells 201 are not easy to change in temperature due to contact with the end plate 202, which is beneficial to improving the consistency of the temperatures of the battery cells 201 in the battery module 20 and prolonging the service life of the battery module 20.

In some embodiments, as shown in fig. 4, the end plate 202 is recessed with a recess 2021 along the first direction X toward the surface of the battery cell 201, and at least a portion of the heat insulating plate 203 is located in the recess 2021.

The recess 2021 may be a space formed on the surface of the end plate 202 facing the battery cell 201 along the first direction X, and is used for accommodating at least part of the heat insulation plate 203, so that the height of the heat insulation plate 203 protruding from the end plate 202 is reduced, the flatness of the surface contacting the battery cell 201 can be improved, the occurrence of local overstress on the surface of the battery cell 201 can be reduced, and the possibility of crush injury on the surface of the battery cell 201 is reduced.

The recess 2021 may be formed by machining such as milling a surface of the end plate 202 facing the battery cell 201 in the first direction X, or may be formed by machining together with the end plate 202.

Illustratively, the recess 2021 may be manufactured by integrally molding with the end plate 202 by a machining method such as casting, so that the end plate 202 having the recess 2021 can be manufactured integrally and synchronously, which not only facilitates the machining and manufacturing of the end plate 202, but also enables the overall structure of the end plate 202 to have good strength; the end plate 202 with the recess 2021 may also be manufactured by machining a whole blank by using a machining method such as milling, so that the machining difficulty and the machining cost of the end plate 202 with the recess 2021 are low.

In some embodiments, the surface of the thermal plate 203 facing the cell 201 is flush with the surface of the end plate 202 facing the cell 201.

By configuring the surface of the heat insulation plate 203 facing the battery cell 201 to be flush with the surface of the end plate 202 facing the battery cell 201, the surface contacted with the battery cell 201 is a flat plane, which is favorable for uniformly stressing the surface of the battery cell 201, reducing the occurrence of local overstress on the surface of the battery cell 201 and reducing the possibility of crush injury on the surface of the battery cell 201.

In some embodiments, the recess 2021 is spaced from the edge of the surface of the thermal plate 203 facing the battery cell 201.

By disposing the concave portion 2021 so as to be spaced apart from the edge of the surface of the heat insulating plate 203 facing the battery cell 201, the outer periphery of the concave portion 2021 is formed with a boss. Since the boss surrounds the recess 2021, the boss can limit the heat insulating plate 203 in a state where the heat insulating plate 203 is placed in the recess 2021, and the risk of the heat insulating plate 203 moving can be reduced.

In some embodiments, the end plate 202 is provided with reinforcing ribs 2022, the reinforcing ribs 2022 being provided on a surface of the end plate 202 facing away from the battery cells 201 in the first direction X.

The stiffener 2022 may be a bead for reinforcing the structural strength of the end plate 202. By providing the stiffener 2022 on the end plate 202, the structural strength of the end plate 202 can be improved, so that the end plate 202 can apply a greater force to the plurality of cells 201, so that the end plate 202 can better control the expansion of the cells 201.

By providing the stiffener 2022 to the surface of the end plate 202 facing away from the battery cell 201 in the first direction X, the stiffener 2022 does not interfere with the battery cell 201, facilitating the arrangement of the various components in the battery module 20.

Illustratively, the reinforcing ribs 2022 may be manufactured by integrally molding with the end plate 202 by a processing method such as casting, so that the reinforcing ribs 2022 can be manufactured integrally and synchronously with the end plate 202, thereby not only facilitating the manufacturing of the end plate 202 with the reinforcing ribs 2022, but also enabling the overall structure of the end plate 202 to have good strength; the end plate 202 with the reinforcing ribs 2022 can also be manufactured by machining the whole blank by adopting a mechanical machining method such as milling, so that the machining difficulty and the machining cost of the end plate 202 with the reinforcing ribs 2022 are low.

In some embodiments, the battery module 20 may further include a tightening member coupled to the two end plates 202, locking the two end plates 202 in the first direction X such that the two end plates 202 have a tendency to approach each other to control expansion of the battery cells 201 in the first direction X.

The exemplary tightening member includes a steel belt that is sleeved outside the two end plates 202 and the plurality of battery cells 201 between the two end plates 202, where the steel belt is in a pre-tightening state to drive the end plates 202 at two ends of the plurality of battery cells 201 to approach each other, so as to control expansion of the battery cells 201 in the first direction X.

Some embodiments of the present application provide a battery 100, as shown in fig. 5, where the battery 100 includes a case 10 and a battery module 20 provided in any of the foregoing embodiments, the case 10 encloses a receiving space 103, and the battery module 20 is disposed in the receiving space 103.

The case 10 may be the first case 101 according to the foregoing embodiment or the second case 102 according to the foregoing embodiment, and those skilled in the art may set the case according to the actual situation.

The case 10 may be a member for providing the accommodation space 103, and the accommodation space 103 is used for accommodating the battery module 20 including the battery cell 201, the wire harness, the circuit board, and the like, so as to protect the components, reduce the influence of external impact, rainwater, and the like, and improve the reliability of the battery 100.

The battery 100 has a long service life due to the battery module 20 provided by the above technical scheme.

In some embodiments, the case 10 includes a first wall 104 and a second wall 105, the first wall 104 and the second wall 105 being interconnected to define the receiving space 103.

The first wall 104 and the second wall 105 may be different wall structures in the case 10, and they are connected to each other to enclose the case 10 having the accommodation space 103. Illustratively, the first wall 104 may be a bottom wall in the case 10, the second wall 105 may be provided with a plurality of second walls 105, and the plurality of second walls 105 are connected end to end in sequence and all connected to the same side of the first wall 104, so that the first wall 104 and the second wall 105 can enclose the case 10 with an opening at one end, and the battery module 20, the wire harness, the circuit board, and the like can be conveniently loaded into the case 10 from the opening.

In some embodiments, the heat exchange flow channels 1041 are provided in the first wall 104, the end plates 202 of the battery modules 20 are connected to the first wall 104, and the battery cells 201 of the battery modules 20 are in contact with the first wall 104.

The heat exchange flow passage 1041 may be a flow passage disposed in the first wall 104 and used for circulating a heat exchange medium, so that the heat exchange medium can exchange heat with the battery cell 201 through the first wall 104, which is beneficial to making the battery cell 201 in a suitable temperature range and to maintaining the stability of the operation of the battery cell 201; meanwhile, the heat exchange flow passage 1041 is integrated in the first wall 104 of the case 10, which can reduce the use of additional heat exchange plates, thereby being beneficial to reducing the number of parts in the battery 100 and reducing the cost of the battery 100.

Illustratively, the first wall 104 may be formed from a profile such that the case 10 is relatively inexpensive to manufacture. In some embodiments, the heat exchange flow channel 1041 may be machined into the first wall 104 by machining, such as drilling.

By contacting the battery cell 201 of the battery module 20 with the first wall 104, the heat exchange medium flowing in the heat exchange channel 1041 in the first wall 104 can smoothly exchange heat with the battery cell 201 through the first wall 104, which is beneficial to improving the heat exchange efficiency of the battery cell 201 and external components.

The end plates 202 of the battery module 20 are connected to the first wall 104, and the surfaces of the end plates 202 perpendicular to the contact surfaces of the battery cells 201 may be connected to the first wall 104 such that the battery cells 201 between the two end plates 202 can contact the first wall 104.

In some embodiments, battery 100 further includes a connecting mount 30, and end plate 202 is connected to first wall 104 by connecting mount 30.

The connection holder 30 may be a holder structure located in the receiving space 103 and connected to the first wall 104 for connecting components inside the battery 100 to the first wall 104. The end plate 202 is connected to the first wall 104 through the connecting seat 30, so that the end plate 202 is firmly connected in the box 10, and is not easy to shake due to external impact.

The connection base 30 may be connected to the first wall 104 by bonding, welding, or the like, or may be connected to the first wall 104 by a connection member such as a connection bolt or a connection pin, which may be selected by those skilled in the art according to practical situations. The end plate 202 may be connected to the connection base 30 by bonding, welding, or the like, or may be connected to the connection base 30 by a connection member such as a connection bolt or a connection pin, and may be selected by those skilled in the art according to practical situations.

In some embodiments, as shown in fig. 6, battery 100 further includes a thermal shield 40, with thermal shield 40 sandwiched between end plate 202 and connector base 30.

The heat insulating member 40 may be a member having heat insulating ability such that heat transfer between the connection seat 30 and the end plate 202 can be blocked by the heat insulating member 40 by disposing the heat insulating member 40 between the end plate 202 and the connection seat 30. Illustratively, the insulation 40 may be made of an insulating material such that the insulation 40 has good insulation capacity. The heat insulating member 40 may be made of epoxy resin or polyurethane, so that the heat insulating member 40 has good heat insulating capability and good mechanical performance, and can bear the acting force between the end plate 202 and the connecting seat 30.

Illustratively, the end plate 202 may be lockingly coupled to the connector housing 30 by a coupling bolt through which the insulation 40 is passed and sandwiched between the end plate 202 and the connector housing 30.

In some embodiments, the insulation 40 may be configured as a sheet member such that the insulation 40 can be conveniently sandwiched between the connection seat 30 and the end plate 202.

Some embodiments of the present application further provide an electric device, where the electric device includes the battery 100 provided by the above technical solution, and the battery 100 is used for providing electric energy. Since the power utilization device comprises the battery 100 provided by the technical scheme, the power utilization device has long service life.

According to some embodiments of the present application, there is provided a battery module 20, the battery module 20 including a heat insulation plate 203, two end plates 202, and a plurality of battery cells 201, the plurality of battery cells 201 being stacked between the two end plates 202 disposed at intervals along a first direction X. The surface of the end plate 202 facing the battery cell 201 along the first direction X is recessed with a recess 2021, the heat insulating plate 203 is disposed in the recess 2021, and the surface of the heat insulating plate 203 facing the battery cell 201 is flush with the surface of the end plate 202 facing the battery cell 201; the surface of the end plate 202 facing away from the battery cells 201 in the first direction X is provided with reinforcing ribs 2022.

The application also provides a battery 100, this battery 100 includes battery module 20, box 10 and thermal-insulated piece 40 that above-mentioned technical scheme provided, first wall 104 and second wall 105 interconnect in the box 10 enclose into accommodation space 103, battery module 20 is located accommodation space 103, and battery module 20's end plate 202 is connected in the first wall 104 that is equipped with heat transfer runner 1041 through connecting seat 30, battery module 20's battery monomer 201 and first wall 104 contact, thermal-insulated piece 40 presss from both sides and locates between end plate 202 and connecting seat 30.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (9)

1. A battery module, comprising:

the two end plates are arranged at intervals along the first direction;

a plurality of battery cells stacked between the two end plates;

the heat insulation plate is arranged between the end plate and the battery cell, the end plate is recessed with a concave part along the first direction towards the surface of the battery cell, at least part of the heat insulation plate is positioned in the concave part, and the concave part is spaced from the edge of the surface of the heat insulation plate towards the battery cell.

2. The battery module of claim 1, wherein a surface of the heat shield facing the battery cells is flush with a surface of the end plate facing the battery cells.

3. The battery module of claim 1, wherein the end plate is provided with a stiffener disposed on a surface of the end plate facing away from the battery cells in the first direction.

4. A battery, comprising:

the battery module according to any one of claims 1 to 3;

the box encloses into accommodation space, battery module set up in accommodation space.

5. The battery of claim 4, wherein the housing includes a first wall and a second wall, the first wall and the second wall being interconnected to define the receiving space.

6. The battery of claim 5, wherein the first wall has a heat exchange flow passage disposed therein, wherein the end plate of the battery module is connected to the first wall, and wherein the battery cells of the battery module are in contact with the first wall.

7. The battery of claim 6, further comprising a connection mount, wherein the end plate is connected to the first wall by the connection mount.

8. The battery of claim 7, further comprising a thermal shield sandwiched between the end plate and the connection block.

9. An electrical device comprising a battery as claimed in any one of claims 4 to 8 for providing electrical energy.