CN220527085U - Battery, energy storage system and electricity utilization device - Google Patents

Abstract

The application relates to a battery, an energy storage system and an electric device. The battery includes: the support component and the battery monomer are fixed on two opposite sides of the support component along the thickness direction of the support component. According to the battery, the battery monomers are respectively fixed on the two opposite side surfaces of the supporting part, so that one side surface of the supporting part not only supports the battery monomers, but also is integrally provided with the battery monomers, the upper and lower layers of battery monomers share the same supporting part, the space for installing the battery monomers in the battery is fully enlarged, the space utilization rate is improved, and the energy density of the battery is further improved.

Description

Battery, energy storage system and electricity utilization device

Technical Field

The application relates to the technical field of energy storage equipment, in particular to a battery, an energy storage system and an electric device.

Background

With the continuous development of battery technology, the application fields of the battery are also expanding, for example: in the energy storage field, a plurality of batteries are integrated in an energy storage electric cabinet, and electric energy can be output outwards during operation. However, the conventional battery structure is limited by design defects, resulting in limitation in improvement of energy density thereof.

Disclosure of Invention

Based on this, it is necessary to provide a battery, an energy storage system and an electric device, optimize the structural design, and improve the energy density of the battery.

In a first aspect, the present application provides a battery comprising: a plurality of battery cells; and the two opposite side surfaces of the bearing part along the thickness direction of the bearing part are respectively fixed with a battery cell.

According to the battery, the battery monomers are respectively fixed on the two opposite side surfaces of the supporting part, so that one side surface of the supporting part not only supports the battery monomers, but also is integrally provided with the battery monomers, the upper and lower layers of battery monomers share the same supporting part, the space for installing the battery monomers in the battery is fully enlarged, the space utilization rate is improved, and the energy density of the battery is further improved.

In some embodiments, the battery cell includes an electrode terminal and a housing fixed to the support member, the electrode terminal being disposed on a side of the housing facing away from the support member on at least one side of the support member in a thickness direction thereof. In this way, the battery cells on at least one side of the supporting member are arranged in a manner that the electrode terminals are opposite to the supporting member, so that the battery cells on the supporting member are convenient to electrically connect; meanwhile, signal acquisition is also convenient for the battery monomer.

In some embodiments, each electrode terminal is located on a side of the housing facing away from the support member on either side of the support member in its thickness direction. So design, with the battery monomer of bearing part both sides, all install with the mode that electrode terminal was carried the part dorsad for battery inner structure distributes more rationally, and it is more convenient to connect between the battery monomer.

In some embodiments, the battery further comprises a heat conducting member, the supporting member is provided with the heat conducting member on at least one side surface in the thickness direction of the supporting member, and the battery cell is provided on the heat conducting member on one side surface of the supporting member having the heat conducting member. So, set up the heat conduction spare between battery monomer and bearing part, improve the heat transfer between battery monomer and the bearing part, reduce the heat of battery monomer operation in-process, promote the stability of battery performance.

In some embodiments, the battery further comprises a temperature control structure disposed on the support member for controlling the temperature of the battery cells on at least one side of the support member. Therefore, the temperature control structure is introduced, so that the running temperature of the battery monomer is conveniently controlled, the battery works at a proper temperature, and the stability of the battery performance is improved.

In some embodiments, the temperature control structure comprises a temperature control channel disposed within the interior of the support member for flow of a temperature control medium. So, set up the temperature control passageway in bearing part inside for temperature control medium flows in the temperature control passageway, makes it can carry out the heat exchange with the relative both sides face of bearing part, realizes carrying out the temperature control to the battery monomer of both sides simultaneously, thereby makes the battery monomer of both sides work steadily.

In some embodiments, the temperature control channel comprises a channel cell configured as a hollow structure extending along a first direction, wherein the first direction intersects the thickness direction. So, extend the passageway unit along first direction for temperature control medium flows in first direction, makes the battery monomer of arranging along first direction all obtain effective cooling, is favorable to promoting the temperature control effect.

In some embodiments, the channel units include a plurality of channel units, all of which are spaced apart along a second direction intersecting a plane formed between the first direction and the thickness direction and are in communication end-to-end. Therefore, the temperature control channel is designed into a plurality of channel units, the flow path of the temperature control medium is prolonged, the heat exchange time is prolonged, the heat transfer effect is improved, the temperature of the battery cell is controllable, and the battery is further enabled to stably run.

In some embodiments, the temperature control channel further comprises a first sub-channel and a second sub-channel which are both communicated with the channel unit, and the first sub-channel and the second sub-channel are respectively positioned at two opposite ends of the channel unit along the first direction. Therefore, the temperature control medium can flow into the outside of the channel unit and the discharge channel unit conveniently, and the temperature control medium can flow stably.

In some embodiments, the channel units include a plurality of channel units, all of which are spaced apart along the second direction and each of which is connected between the first sub-channel and the second sub-channel, wherein the second direction intersects a plane formed between the first direction and the thickness direction. By the design, temperature control media which do not pass through heat exchange can be distributed in each channel unit, and the temperature control capability of each channel unit is improved, so that the temperature control effect is improved.

In some embodiments, the support member includes a frame and a support member connected to the frame, and the opposite sides of the support member along the thickness direction of the support member are both fixed with battery cells, and the temperature control channel is at least arranged in the support member. Therefore, the supporting part is designed into the frame and the supporting part, so that the installation of the battery cell is convenient, and the stability of the structure is improved; and the temperature control channel can exchange heat with the battery monomer through the supporting piece conveniently, so that the temperature control effect is improved.

In some embodiments, the temperature control structure further comprises an inlet pipe and an outlet pipe arranged on the frame, and the inlet pipe and the outlet pipe are communicated with the temperature control channel. So, set up admission pipe and discharge pipe on the frame respectively, be favorable to the temperature control medium to flow through the most region of support spare, increase heat transfer scope, promote the temperature control effect for the operation of battery is more stable.

In some embodiments, the battery cell includes a plurality of battery cells on at least one side of the support member in a thickness direction thereof, and all of the battery cells are fixed by a fixing structure to form at least one battery module. Therefore, the battery cells are preformed into the battery module, so that scattered battery cells form an integral structure, and the battery cells are convenient to install on the bearing part; meanwhile, the stability of the whole structure of the battery is also facilitated to be improved.

In some embodiments, the battery further comprises a reinforcing member protruding on the side surface of the supporting member having the battery module, and forming a receiving cavity for receiving the battery module with the supporting member, and the fixing structure is connected with the reinforcing member. So, set up the reinforcement, not only can promote bearing member's overall structure intensity, but also be convenient for with battery module spacing at the holding intracavity, promote battery module's installation stability on bearing member.

In some embodiments, the fixing structure includes an end plate, the end plate is attached to one side surface of the battery cell, one end of the battery cell exceeds the end plate, one end of the battery cell exceeding the end plate is installed in the accommodating cavity, and the end plate is connected with the reinforcing member. Therefore, the end plate is matched with the reinforcing piece, so that the battery module is stably fixed on the supporting part, and the stability of the whole structure of the battery is improved.

In some embodiments, the battery further comprises a guiding structure with an outlet, and the guiding structure is covered on the explosion-proof structure of the same battery module. Therefore, the guiding structure is arranged, so that the gas exhausted from the explosion-proof structure is conveniently guided, and is uniformly and directionally exhausted from the outlet, the diffusion range of the sprayed gas is reduced, and the influence on other battery monomers is reduced; meanwhile, the directional discharge is convenient for orderly managing the battery in a fault state.

In some embodiments, the guiding structure includes a guiding plate, two side plates disposed at intervals on one side surface of the guiding plate, and a sealing plate connected between the two side plates, wherein the two side plates are respectively far away from an end of the sealing plate and an end of the guiding plate to form an outlet. Therefore, the guide plate, the side plate and the sealing plate are matched, so that the discharged gas after explosion can be discharged in a better oriented mode.

In some embodiments, the thickness direction of the support member is aligned with the vertical direction. So designed, the battery monomer is convenient to vertically distribute on the supporting component along the vertical direction, so that the distribution is more reasonable and standard, and the space utilization rate in the battery is improved.

In a second aspect, the present application provides an energy storage system comprising a battery of any one of the above.

In a third aspect, the present application provides an electrical device comprising a battery as described in any one of the above.

Drawings

Fig. 1 is a schematic diagram of a vehicle structure as described in some embodiments of the present application.

Fig. 2 is an exploded view of a battery provided in some embodiments of the present application.

Fig. 3 is an exploded schematic view of a battery cell structure according to some embodiments of the present application.

Fig. 4 is a schematic view illustrating a battery structure without a battery module according to some embodiments of the present application.

Fig. 5 is another view of the battery structure shown in fig. 4.

Fig. 6 is a cross-sectional view of the structure of fig. 5 taken along the direction A-A.

Fig. 7 is a schematic diagram of a temperature-controlled flow channel according to some embodiments of the present application.

Fig. 8 is a schematic diagram of a second temperature-controlled flow channel structure according to some embodiments of the present application.

Fig. 9 is a schematic view illustrating a battery structure in which a lower layer is a battery module according to some embodiments of the present application.

Fig. 10 is a schematic view of a battery structure of a battery module with upper and lower layers according to some embodiments of the present application.

Fig. 11 is a schematic view of a battery structure with a guide structure according to some embodiments of the present application.

Fig. 12 is an exploded view of the battery structure shown in fig. 11.

1000. A vehicle; 200. a controller; 300. a motor; 100. a battery; 10. a battery cell; 11. an electrode terminal; 12. an explosion-proof structure; 13. an end cap; 14. an electrode assembly; 15. a housing; 16. a housing; 20. a support member; 21. a frame; 211. a longitudinal beam; 212. a cross beam; 213. a first mounting portion; 214. a second mounting portion; 22. a support; 23. a receiving chamber; 24. a reinforcing member; 241. a second fixing hole; 25. a mounting cavity; 30. a heat conductive member; 40. a temperature control structure; 41. a temperature control channel; 411. a channel unit; 42. a first sub-flow path; 43. a second shunt; 44. an inlet tube; 45. a discharge pipe; 50. a battery module; 51. a fixed structure; 511. an end plate; 51a, a first fixing hole; 512. a sleeve belt; 60. a guide structure; 61. an outlet port; 62. a guide plate; 63. a side plate; 64. a closing plate; 70. a case; 71. a first portion; 72. a second portion; x, a first direction; y, second direction; z, thickness direction.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the drawings, which are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In this application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. 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.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Currently, the more widely the battery is used in view of the development of market situation. The battery is widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and a plurality of fields such as military equipment, aerospace and the like; but also is applied to energy storage power supply systems of hydraulic power, firepower, wind power, solar power stations and the like.

In the energy storage field, a plurality of batteries are integrated in an energy storage electric cabinet, and electric energy can be output outwards during operation. In a traditional battery structure, a plurality of battery cells or battery modules consisting of the battery cells are generally fixed on a bottom plate structure; after the fixing, the cover body is covered on the bottom plate to package the battery. However, such a structural design is often limited by a limited space inside the battery, so that the energy density of the battery is limited, and the current requirements for high power and high capacity of the battery cannot be met.

Based on this, in order to optimize traditional battery structural design, promote the energy density of battery, this application has designed a battery, fixed battery monomer respectively on the opposite sides face of bearing part for a bearing part's a side has not only the bearing battery monomer, and the battery monomer is also installed in the integration of another side, thereby makes the battery monomer sharing of upper and lower two-layer same bearing part, can supply battery monomer installation's space in the abundant expansion battery, promotes space utilization, and then promotes the energy density of battery.

The battery cell disclosed by the embodiment of the application can be used in electric devices such as vehicles, ships or aircrafts, but is not limited to the electric devices. A power supply system having a battery cell, a battery, or the like disclosed in the present application, which constitutes the power utilization device, may be used.

The battery provided by the embodiment of the application can be used for power utilization by using the battery as a power supply or various energy storage systems by using the battery as an energy storage element. The energy storage system can be an energy storage container or an energy storage electric cabinet.

The embodiment of the application provides an electricity utilization device using a battery as a power supply, wherein the electricity utilization device can be, but is not limited to, a mobile phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

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

Referring to fig. 1, fig. 1 is a schematic diagram of a vehicle 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 be used not only as an operating power source for vehicle 1000, but also 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 the vehicle.

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.

The battery 100 may be in a battery pack form, and for ease of understanding, please refer to fig. 2, fig. 2 is an exploded view of the battery 100 provided in some embodiments of the present application, and it should be noted that the structure shown in fig. 2 is only for ease of understanding the basic structure of the battery 100, and should not be construed as limiting the present application. The battery 100 includes a case 70 and a battery cell 10, and the battery cell 10 is accommodated in the case 70. The case 70 is used to provide a receiving space for the battery cell 10, and the case 70 may have various structures. In some embodiments, the case 70 may include a first portion 71 and a second portion 72, the first portion 71 and the second portion 72 being overlapped with each other, the first portion 71 and the second portion 72 together defining an accommodating space for accommodating the battery cell 10. The second portion 72 may be a hollow structure with one end opened, the first portion 71 may be a plate-shaped structure, and the first portion 71 covers the opening side of the second portion 72, so that the first portion 71 and the second portion 72 together define an accommodating space; the first portion 71 and the second portion 72 may be hollow structures each having an opening at one side, and the opening side of the first portion 71 is engaged with the opening side of the second portion 72. Of course, the case 70 formed by the first portion 71 and the second portion 72 may be of various shapes, such as a cylinder, a rectangular parallelepiped, or the like.

In the battery 100, the number of the battery cells 10 may be plural, and the plural battery cells 10 may be connected in series, parallel, or series-parallel, and series-parallel refers to both of the plural battery cells 10 being connected in series and parallel. The plurality of battery cells 10 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 10 is accommodated in the box 70; of course, the battery 100 may also be a battery module formed by connecting a plurality of battery cells 10 in series or parallel or series-parallel connection, and then connecting a plurality of battery modules in series or parallel or series-parallel connection to form a whole and be accommodated in the case 70. 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 10.

Wherein each battery cell 10 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 10 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Referring to fig. 3, fig. 3 is an exploded view of a battery cell 10 according to some embodiments of the present application. The battery cell 10 refers to the smallest unit constituting the battery 100. As in fig. 3, the battery cell 10 includes an end cap 13, a case 15, an electrode assembly 14, and other functional components.

The end cap 13 refers to a member that is covered at the opening of the case 15 to isolate the internal environment of the battery cell 10 from the external environment. Without limitation, the shape of the end cap 13 may be adapted to the shape of the housing 15 to fit the housing 15. Optionally, the end cover 13 may be made of a material (such as an aluminum alloy) with a certain hardness and strength, so that the end cover 13 is not easy to deform when being extruded and collided, so that the battery cell 10 can have higher structural strength, and the safety performance can be improved. The end cap 13 may be provided with functional parts such as the electrode terminals 11. The electrode terminals 11 may be used to be electrically connected with the electrode assembly 14 for outputting or inputting electric power of the battery cell 10. In some embodiments, the end cap 13 may also be provided with a pressure relief mechanism for relieving the internal pressure when the internal pressure or temperature of the battery cell 10 reaches a threshold. The material of the end cap 13 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present application. In some embodiments, insulation may also be provided on the inside of the end cap 13, which may be used to isolate electrical connection components within the housing 15 from the end cap 13 to reduce the risk of short circuits. By way of example, the insulation may be plastic, rubber, or the like.

The case 15 is an assembly for mating with the end cap 13 to form an internal environment of the battery cell 10, wherein the formed internal environment may be used to house the electrode assembly 14, electrolyte, and other components. The case 15 and the end cap 13 may be separate components, and an opening may be provided in the case 15, and the interior of the battery cell 10 may be formed by covering the opening with the end cap 13 at the opening. It is also possible to integrate the end cap 13 and the housing 15, but in particular, the end cap 13 and the housing 15 may form a common connection surface before other components are put into the housing, and when it is necessary to encapsulate the inside of the housing 15, the end cap 13 is then put into place on the housing 15. The housing 15 may be of various shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the case 15 may be determined according to the specific shape and size of the electrode assembly 14. The material of the housing 15 may be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiment of the present application.

The electrode assembly 14 is a component in which electrochemical reactions occur in the battery cell 10. One or more electrode assemblies 14 may be contained within the housing 15. The electrode assembly 14 is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally provided between the positive electrode sheet and the negative electrode sheet. The portions of the positive and negative electrode sheets having active material constitute the main body portion of the electrode assembly 14, and the portions of the positive and negative electrode sheets having no active material constitute the tabs, respectively. The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or located at two ends of the main body portion respectively. During charge and discharge of the battery 100, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab is connected to the electrode terminal 11 to form a current loop.

Referring to fig. 4, according to some embodiments of the present application, there is provided a battery 100, the battery 100 including: a support member 20 and a plurality of battery cells 10. The battery cells 10 are fixed to the support member 20 on opposite sides thereof in the thickness direction Z thereof.

The support member 20 is a structure capable of being mounted to the power supply unit 10 and providing a load bearing force thereto. The thickness direction Z of the support member 20 may be consistent with the vertical direction when the battery 100 is used in an energy storage system. At this time, the battery cells 10 fixed to the opposite sides of the support member 20 may be regarded as upper and lower layers.

There are various ways of fixing the battery cell 10 to the side of the support member 20, such as: the fixing means may be, but not limited to, bolting, clamping, bonding, riveting, etc. Meanwhile, the number of the battery cells 10 on the opposite sides of the supporting member 20 may be the same or different.

In addition, in order to protect the battery cells 10, covers (not shown) may be provided on opposite sides of the support member 20 in the thickness direction Z thereof, respectively, and the respective battery cells 10 may be sealed on the support member 20 by the covers.

By the design, the upper and lower layers of battery cells 10 share the same supporting member 20, so that the installation space of the battery cells 10 in the battery 100 can be fully enlarged, the space utilization rate is improved, and the energy density of the battery 100 is further improved.

Optionally, referring to fig. 4, the battery cell 10 includes an electrode terminal 11 and a housing 16 fixed to the support member 20 according to some embodiments of the present application. The electrode terminals 11 are located on at least one side of the support member 20 in the thickness direction Z thereof on a side of the case 16 facing away from the support member 20.

The electrode terminals 11 refer to members that achieve electrical connection between the battery cells 10 and the battery cells 10, and may be connected with tabs of the electrode assembly 14 to form a current loop. The case 16 refers to a structure in which the battery cells 10 are exposed, and may include a case 15 and an end cap 13 covering the case 15. Wherein the case 15 is fixed to the support member 20, and the electrode terminals 11 are disposed on the cap 13. Of course, in some embodiments, the electrode terminal 11 may also be disposed on the housing 15, where the electrode terminal 11 is located on a side of the housing 15 facing away from the supporting member 11.

The electrode terminals 11 are located on the side of the case 16 facing away from the holder member 20, which means that the battery cells 10 are mounted in a state in which the sides facing away from the electrode terminals 11 face toward the holder member 20. The electrode terminals 11 of the different battery cells 10 may be connected through a bus bar structure, such as a tab, etc., such that the electrode terminals 11 are disposed opposite to the support member 20, which may be advantageous for increasing the operation space of one side of the electrode terminals 11.

For ease of understanding, the upper and lower layers of fig. 4 are illustrated as examples, and at least one of the battery cells 10 is mounted in a state in which a side facing away from the electrode terminals 11 faces toward the support member 20. For example: the upper battery cell 10 is erected on one side of the support member 20, opposite to the electrode terminal 11, to achieve the positive mounting of the battery cell 10. The lower battery cells 10 are arranged in various ways, such as: the battery cell 10 is mounted in such a manner that the large surface thereof is adhered to one side of the support member 20; alternatively, the electrode terminal 11 may be mounted so as to face away from the supporting member 20.

When the lower battery cell 10 is also mounted with the electrode terminal 11 facing away from the support member 20 in fig. 4, the battery cell 10 may be considered to be mounted upside down on the support member 20.

The battery cells 10 on at least one side of the supporting member 20 are mounted with the electrode terminals 11 facing away from the supporting member 20, so that the battery cells 10 on the supporting member 20 are electrically connected with each other conveniently; at the same time, signal acquisition of the battery cell 10 is also facilitated.

Optionally, referring to fig. 4, each electrode terminal 11 is located on a side of the housing 16 facing away from the support member 20 on either side of the support member 20 in its thickness direction Z, according to some embodiments of the present application.

Each electrode terminal 11 is disposed opposite the support member 20, which means that the electrode terminals 11 on opposite sides of the support member 20 are disposed opposite each other, respectively. With continued reference to fig. 4, the electrode terminals 11 of the upper-layer battery cells 10 in fig. 4 are all disposed upward, and at this time, the upper-layer battery cells 10 may be regarded as the positive battery cells 10; the electrode terminals 11 of the lower battery cells 10 are all disposed downward in fig. 4, i.e., the lower battery cells 10 may be regarded as inverted battery cells 10.

So designed, the battery cells 10 on both sides of the supporting member 20 are all installed in a manner that the electrode terminals 11 are opposite to the supporting member 20, so that the internal structure of the battery 100 is distributed more reasonably, and the connection between the battery cells 10 is more convenient.

Optionally, referring to fig. 5 and 6, according to some embodiments of the present application, the battery 100 further includes a heat conducting member 30. The support member 20 is provided with a heat conductive member 30 on at least one side in the thickness direction Z thereof, and the battery cell 10 is provided on the heat conductive member 30 on one side of the support member 20 having the heat conductive member 30.

The heat conductive member 30 refers to a member capable of transmitting heat, and the material thereof may be selected from various materials such as: the material of the heat conductive member 30 may be a heat conductive adhesive; or a metal material such as stainless steel or aluminum alloy.

The heat conductive member 30 may be provided on one side of the supporting member 20 or may be provided on both opposite sides of the supporting member 20. When the heat conductive member 30 is provided at only one side of the supporting member 20, the battery cells 10 at one side of the supporting member 20 may be provided on the heat conductive member 30, and the battery cells 10 at the other side may be provided directly on the surface of the supporting member 20.

In addition, in order to increase the heat transfer area between the heat conductive member 30 and the supporting member 20, the heat conductive member 30 may be designed in a sheet-like or plate-like structure to be attached to one side of the supporting member 20.

The heat conducting piece 30 is arranged between the battery cell 10 and the supporting part 20, so that heat transfer between the battery cell 10 and the supporting part 20 is improved, heat in the operation process of the battery cell 10 is reduced, and stability of performance of the battery 100 is improved.

Optionally, referring to fig. 6, according to some embodiments of the present application, the battery 100 further includes a temperature control structure 40. The temperature control structure 40 is provided to the support member 20 and is used to control the temperature of the battery cells 10 on at least one side of the support member 20.

The temperature control structure 40 refers to a component capable of having a certain function of controlling the temperature of the battery cell 10, such as: when the environmental temperature of the battery 100 is low, the temperature of the battery cell 10 can be raised by the temperature control structure 40; or, when the battery cell 10 is running, the heat generation is higher, and the temperature of the battery cell 10 can be reduced by the temperature control structure 40.

There are various designs of the temperature control structure 40, such as: the temperature control structure 40 may be designed as a semiconductor cooling plate; alternatively, the temperature control structure 40 may be designed as a flow channel structure, into which a temperature control medium is introduced to control the temperature of the battery cell 10.

In addition, the temperature control structure 40 can control the temperature of the battery cells 10 on only one side of the support member 20; the cells 10 on opposite sides of the support member 20 can also be simultaneously warmed.

The temperature control structure 40 is introduced to facilitate control of the operating temperature of the battery cell 10, so that the battery 100 operates at a proper temperature, which is beneficial to improving the stability of the performance of the battery 100.

Optionally, referring to fig. 6, the temperature control structure 40 includes a temperature control channel 41 according to some embodiments of the present application. The temperature control channel 41 is provided inside the support member 20, and the temperature control channel 41 is used for flowing a temperature control medium.

The temperature control channel 41 is a channel structure for flowing a temperature control medium, and the shape thereof can be variously designed, for example: the temperature control channel 41 may be designed as a serpentine flow channel, a plurality of parallel flow channels, etc. The temperature control channel 41 is disposed inside the support member 20, so that the temperature control medium in the temperature control channel 41 can control the temperature of the opposite sides of the support member 20.

The temperature control medium is a substance capable of flowing in the temperature control channel 41 and exchanging heat with the support member 20, and may be a liquid, such as: water, heat transfer oil, etc.; it may also be a gas, such as: carbon dioxide, nitrogen, and the like.

The temperature control channel 41 is arranged in the supporting member 20, so that the temperature control medium flows in the temperature control channel 41, and can exchange heat with the two opposite side surfaces of the supporting member 20, thereby realizing the temperature control of the battery cells 10 at two sides at the same time, and further ensuring the battery cells 10 at two sides to work stably.

Optionally, referring to fig. 7, the temperature control channel 41 includes a channel unit 411 according to some embodiments of the present application. The channel unit 411 is configured as a hollow structure extending in a first direction X, which intersects the thickness direction Z.

The channel unit 411 refers to a portion of the structure within the control channel, which is designed as a hollow structure, allowing the flow of the temperature control medium so that the temperature control medium can exchange heat with the support member 20. The channel unit 411 extends in the first direction X, either along the length of the support member 20 or along the width of the support member 20. In particular, in some embodiments, the channel unit 411 extends along the length of the support member 20.

The number of channel units 411 may be one or more. When the number of the channel units 411 is one, the size of the channel units 411 may be widened so that the channel units 411 occupy more space in the support member 20, thereby improving heat exchange efficiency. When the number of the channel units 411 is plural, all the channel units 411 may be distributed at intervals in a certain direction, or the like.

The channel unit 411 extends along the first direction X, so that the temperature control medium flows in the first direction X, and the battery cells 10 arranged along the first direction X can be effectively cooled, which is beneficial to improving the temperature control effect.

Optionally, referring to fig. 7, the channel units 411 include a plurality of channel units 411, and all the channel units 411 are distributed at intervals along the second direction Y and are sequentially connected end to end. Wherein the second direction Y intersects a plane formed between the first direction X and the thickness direction Z.

All the channel units 411 are communicated end to end in turn, which means that the channels formed by the channel units 411 are in a serpentine flow channel or similar to a serpentine flow channel, so that the flow path can be prolonged, and the temperature control effect is improved. The second direction Y intersects the plane formed by the first direction X and the thickness direction Z, which means that the second direction Y and the first direction X are respectively disposed intersecting each other on the support member 20, for example: the first direction X may be the length direction of the support member 20 and the second direction Y may be the width direction of the support member 20. In particular, in some embodiments, the first direction X, the second direction Y, and the thickness direction Z are disposed perpendicular to each other.

The temperature control channel 41 is designed into a plurality of channel units 411, so that the flow path of the temperature control medium is prolonged, the heat exchange time is increased, the heat transfer effect is improved, the temperature of the battery cell 10 is controllable, and the battery 100 is further enabled to stably operate.

Optionally, referring to fig. 8, the temperature control channel 41 further includes a first sub-channel 42 and a second sub-channel 43, which are both in communication with the channel unit 411 according to some embodiments of the present application. The first sub-channel 42 and the second sub-channel 43 are respectively located at opposite ends of the channel unit 411 along the first direction X.

The first sub-flow channel 42 and the second sub-flow channel 43 are respectively referred to as the flow channel structures at two ends of the channel unit 411, and the first sub-flow channel 42 can be utilized to split the temperature control medium into the channel unit 411; the second sub-flow channel 43 may be used to collect the heat-exchanged temperature control medium.

By the design, the temperature control medium can flow into the outside of the channel unit 411 and the outside of the discharge channel unit 411 conveniently, and the stable circulation of the temperature control medium is realized.

Optionally, referring to fig. 8, the channel unit 411 includes a plurality of channels according to some embodiments of the present application. All the channel units 411 are distributed at intervals along the second direction Y and are all communicated between the first sub-channel 42 and the second sub-channel 43, wherein the second direction Y intersects with a plane formed between the first direction X and the thickness direction Z.

When the temperature control medium is introduced into the channel unit 411, the temperature of the temperature control medium will gradually change along with the flow of the temperature control medium, for example: when the temperature control medium cools the battery cell 10, the temperature of the temperature control medium in the channel unit 411 gradually increases, and the heat exchange efficiency with the battery cell 10 gradually decreases.

For this reason, compared to the serial design of each channel unit 411, the present embodiment respectively provides the first sub-channel 42 and the second sub-channel 43 at the opposite ends of the channel unit 411, and the temperature control medium is split into the channel units 411 by using the first sub-channel 42, so that the temperature control medium which has not undergone heat exchange can flow into each channel unit 411.

By the design, the temperature control medium which does not undergo heat exchange can be distributed in each channel unit 411, so that the temperature control capability of each channel unit 411 is improved, and the temperature control effect is improved.

Optionally, referring to fig. 6, according to some embodiments of the present application, the support member 20 includes a frame 21 and a support 22 coupled within the frame 21. The battery cells 10 are fixed to opposite sides of the support member 22 in the thickness direction Z of the support member 20, and the temperature control channels 41 are provided at least in the support member 22.

The supporter 22 is a structure capable of supporting and mounting the battery cells 10, and may be designed in a plate-shaped structure, thus facilitating the placement of the battery cells 10. The frame 21 is a structure surrounding the outer periphery of the support 22, and may include two side beams 211 arranged in parallel, and a cross beam 212 connected between the two side beams 211 at a distance. The circumferential edges of the support 22 are connected between two longitudinal beams 211, two transverse beams 212, respectively.

In order to facilitate the installation of the battery 100, a first installation portion 213, such as a screw hole, a fixing bushing, etc., may be provided on the frame 21. Meanwhile, a second mounting portion 214 may be further disposed on the frame 21, so that the cover body can be stably fixed on the frame 21, and the battery 100 is packaged.

There are various ways of attaching the support 22 to the frame 21, such as: the connection mode can be, but is not limited to, welding, clamping, riveting, pin joint, integral molding and the like. Wherein the integral molding can be, but is not limited to, die casting, stamping, etc.

The temperature control channels 41 may be all integrated inside the support 22; or may be partially disposed within the support 22 and partially disposed within the rim 21. In particular, in some embodiments, a portion of the channel units 411 is disposed inside the support 22, and at least one channel unit 411 is also disposed inside each of the two stringers 211. In addition, when the temperature control passage 41 includes the first sub-passage 42 and the second sub-passage 43, the first sub-passage 42 may be disposed inside one of the cross members 212, and the second sub-passage 43 may be disposed inside the other of the cross members 212.

The supporting member 20 is designed into the frame 21 and the supporting member 22, so that the installation of the battery cell 10 is facilitated, and the stability of the structure is improved; and the temperature control channel 41 can exchange heat with the battery cell 10 through the support 22 conveniently, so that the temperature control effect is improved.

Optionally, referring to fig. 6, the temperature control structure 40 further includes an inlet pipe 44 and an outlet pipe 45 disposed on the frame 21, where the inlet pipe 44 and the outlet pipe 45 are both in communication with the temperature control channel 41.

The inlet pipe 44 is a pipe structure for inputting the temperature control medium into the temperature control passage 41, and the outlet pipe 45 is a pipe structure for outputting the temperature control medium in the temperature control passage 41 out of the temperature control passage 41. The inlet pipe 44 and the outlet pipe 45 may be located at the same end of the frame 21, or may be located at different ends of the frame 21.

The inlet pipe 44 and the outlet pipe 45 are arranged on the frame 21 and are communicated with the temperature control channel 41, so that the temperature control medium flows into the frame 21 from the bearing member 22, and the temperature control medium can flow through most areas of the bearing member 22, thereby enlarging the heat exchange range. Wherein, in order to realize that the inlet pipe 44 and the outlet pipe 45 on the frame 21 can be communicated with the temperature control channel 41, the interior of the frame 21 can be designed into a hollow structure; pipe fittings can be inserted into the frame 21, and the pipe fittings can be used to realize that the inlet pipe 44 and the outlet pipe 45 are respectively communicated with the temperature control channel 41.

Alternatively, the connection between the inlet pipe 44 and the outlet pipe 45 and the frame 21 may be, but not limited to, threaded connection, welding, bonding, etc.

The inlet pipe 44 and the outlet pipe 45 are respectively arranged on the frame 21, so that the temperature control medium can flow through most areas of the support member 22, the heat exchange range is enlarged, the temperature control effect is improved, and the battery 100 can run more stably.

Optionally, referring to fig. 9 and 10, the plurality of battery cells 10 are disposed on at least one side of the support member 20 along the thickness direction Z thereof, and all the battery cells 10 are fixed by the fixing structure 51 to form at least one battery module 50.

The battery module 50 is a structure in which a plurality of battery cells 10 are fixed together by a fixing structure 51. The fixing structure 51 is a structure that has a binding function for the plurality of battery cells 10.

The mounting of the battery cells 10 on the support member 20 may be accomplished by directly securing the battery cells 10 to the sides of the support member 20; the battery cells 10 may be previously formed into the battery module 50 and the battery module 50 may be fixed to the side of the support member 20.

The battery module 50 may be fixed to one side of the support member 20, and the battery cell 10 may be directly fixed to the other side without the battery module 50; alternatively, the battery modules 50 may be fixed to both opposite sides of the support member 20. Of course, the battery module 50 may be fixed to one side of the support member 20, or scattered battery cells 10 may be fixed thereto.

In addition, the number of the battery modules 50 may be one or more on one side of the support member 20. When the number of the battery modules 50 is plural, the arrangement direction of the battery cells 10 in the battery modules 50 may be maintained to be identical to the first direction X of the support member 20, and all the battery modules 50 may be sequentially distributed along the second direction Y, wherein the second direction Y intersects with a plane formed between the first direction X and the thickness direction Z.

The battery cells 10 are preformed into the battery module 50, so that scattered battery cells 10 form an integral structure, and the battery cells 10 are conveniently mounted on the supporting member 20; at the same time, it is also convenient to improve the stability of the overall structure of the battery 100.

Optionally, referring to fig. 10, according to some embodiments of the present application, the battery 100 further includes a stiffener 24. The reinforcement member 24 is protruded on the side of the support member 20 having the battery module 50, and forms a receiving cavity 23 for receiving the battery module 50 with the support member 20, and the fixing structure 51 is connected with the reinforcement member 24.

The reinforcement member 24 is a member capable of enhancing the structural strength of the support member 20, such as: the stiffening member 24 may be a rib structure on the support member 20 (e.g., support member 22, etc.); or may be a metal strip structure on the support member 20, etc.

The accommodating cavity 23 can be formed between the reinforcing member 24 and the supporting member 20, and when the battery module 50 is accommodated in the accommodating cavity 23, the reinforcing member 24 can play a certain limiting role on the battery module 50, so that the shaking of the battery module 50 on the supporting member 20 can be reduced. Of course, the reinforcement 24 can form a mounting cavity 25 in the support member 20 in addition to the receiving cavity 23. The mounting cavity 25 and the receiving cavity 23 are located on opposite sides of the stiffener 24, respectively. The mounting chamber 25 may be used to mount electrical components and the like electrically connected with the battery module 50.

Alternatively, the connection between the stiffener 24 and the securing structure 51 may be, but is not limited to, bolting, clamping, riveting, welding, pinning, etc.

The reinforcing piece 24 is arranged, so that the overall structural strength of the bearing member 20 can be improved, the battery module 50 can be conveniently limited in the accommodating cavity 23, and the mounting stability of the battery module 50 on the bearing member 20 is improved.

Optionally, referring to fig. 10, the fixing structure 51 includes an end plate 511, the end plate 511 is attached to a side surface of the battery cell 10, and one end of the battery cell 10 extends beyond the end plate 511. The battery cell 10 is received in the receiving chamber 23 beyond one end of the end plate 511, and the end plate 511 is connected to the reinforcement 24.

The end plate 511 is a structure attached to one side of the battery cell 10, for example: the end plates 511 include two end plates 511 attached to sides of the two battery cells 10 at both ends of the battery module 50, respectively, facing away from each other. Meanwhile, the two end plates 511 may be connected by the side plates 63 or the sheathing tape 512 so that the plurality of battery cells 10 are fixed together.

There are various ways of connecting the end plate 511 and the reinforcing member 24, for example: the end plate 511 is provided with a first fixing hole 51a, and the reinforcing member 24 is provided with a second fixing hole 241 corresponding to the first fixing hole 51 a. During the fixing process, the fasteners may be inserted into the first fixing holes 51a and the second fixing holes 241, respectively, to achieve the connection of the two.

By such design, the end plate 511 is matched with the reinforcement member 24, so that the battery module 50 is stably fixed on the supporting member 20, which is beneficial to improving the stability of the overall structure of the battery 100.

Optionally, referring to fig. 11 and 12, the battery 100 further includes a guiding structure 60 having a guiding opening 61, and the guiding structure 60 is covered on the explosion-proof structure 12 of the same battery module 50 according to some embodiments of the present application.

The explosion-proof structure 12 is a structure that can be broken when the internal air pressure of the battery cell 10 reaches a certain value, so as to allow the air in the battery cell 10 to be discharged, and reduce the risk of explosion of the battery cell 10 due to the incapability of releasing the internal air pressure. The guide structure 60 is a structure capable of guiding the gas discharged from the battery cell 10 to the outside and discharging the gas through the outlet 61. Wherein the outlet 61 of the guide structure 60 may be provided at one end of the battery module 50.

The guiding structure 60 is arranged, so that the gas exhausted from the explosion-proof structure 12 is conveniently guided, and is uniformly and directionally exhausted from the outlet 61, the diffusion range of the sprayed gas is reduced, and the influence on other battery cells 10 is reduced; meanwhile, the directional discharge also facilitates the orderly management of the battery 100 in a fault state.

Optionally, referring to fig. 12, the guiding structure 60 includes a guiding plate 62, two side plates 63 spaced apart from one side of the guiding plate 62, and a closing plate 64 connected between the two side plates 63. The end of the two side plates 63 remote from the closing plate 64 and the end of the guide plate 62 form the outlet 61.

In use, the guide structure 60 can have two side plates 63 respectively located on opposite sides of each explosion-proof structure 12 in the same battery module 50, and the guide plate 62 covers the explosion-proof structures 12. Wherein, the closing plate 64 is disposed opposite to the outlet 61, so that one end of the guiding structure 60 is in a closed state and one end is in an open state.

So designed, with the cooperation of the guide plate 62, the side plate 63 and the closing plate 64, the exhaust gas after explosion can be better directed to be exhausted.

Optionally, referring to fig. 4, the thickness direction Z of the support member 20 is aligned with the vertical direction, according to some embodiments of the present application.

The vertical direction refers to a direction perpendicular to the reference horizontal plane, and when the thickness direction Z of the support member 20 is consistent with the vertical direction, the battery cells 10 on both sides of the support member 20 are vertically distributed in space, i.e., a part of the battery cells 10 is located above the support member 20 and another part of the battery cells 10 is located below the support member 20.

The design is convenient for the battery cell 10 to be distributed up and down on the supporting member 20 along the vertical direction, so that the distribution is more reasonable and standard, and the space utilization rate in the battery 100 is improved.

According to some embodiments of the present application, there is provided an energy storage system comprising a battery 100 of any of the above.

According to some embodiments of the present application, there is provided an electrical device comprising a battery 100 of any one of the above.

The powered device may be any of the aforementioned devices or systems employing batteries.

Referring to fig. 4 to 12, according to some embodiments of the present application, there is provided a battery 100, wherein the battery 100 includes a support member 20 and battery modules 50, and the battery modules 50 are respectively fixed to opposite sides of the support member 20; at the same time, the support member 20 has a temperature control structure 40 integrated therein. By such design, the battery modules 50 on both sides share one supporting member 20 and the upper temperature control structure 40 thereof, so that the space utilization is conveniently improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (20)

1. A battery, the battery comprising:

a plurality of battery cells (10);

the supporting component (20) is fixedly provided with the battery cells (10) along the opposite side surfaces of the supporting component in the thickness direction (Z).

2. The battery according to claim 1, characterized in that the battery cell (10) comprises an electrode terminal (11) and a housing (16) fixed to the support member (20), the electrode terminal (11) being provided on at least one side of the support member (20) in the thickness direction (Z) thereof, the side of the housing (16) facing away from the support member (20).

3. A battery according to claim 2, characterized in that each of the electrode terminals (11) is located on either side of the support member (20) in the direction of its own thickness (Z) on the side of the housing (16) facing away from the support member (20).

4. The battery according to claim 1, characterized in that it further comprises a heat conducting member (30), said heat conducting member (30) being provided on at least one side of said support member (20) in the direction of its thickness (Z), said battery cell (10) being provided on said heat conducting member (30) on one side of said support member (20) having said heat conducting member (30).

5. The battery according to claim 1, further comprising a temperature control structure (40), wherein the temperature control structure (40) is provided on the support member (20) and is used for controlling the temperature of the battery cells (10) on at least one side of the support member (20).

6. The battery according to claim 5, characterized in that the temperature control structure (40) comprises a temperature control channel (41), the temperature control channel (41) being provided inside the support member (20), the temperature control channel (41) being provided for the flow of a temperature control medium.

7. The battery according to claim 6, characterized in that the temperature control channel (41) comprises a channel unit (411), the channel unit (411) being configured as a hollow structure extending in a first direction (X), wherein the first direction (X) intersects the thickness direction (Z).

8. The battery according to claim 7, wherein the channel unit (411) includes a plurality of channel units (411), all of which are spaced apart along a second direction (Y) intersecting a plane formed between the first direction (X) and the thickness direction (Z) and communicating in order from end to end.

9. The battery according to claim 7, wherein the temperature control channel (41) further comprises a first sub-channel (42) and a second sub-channel (43) each communicating with the channel unit (411), the first sub-channel (42) and the second sub-channel (43) being located at opposite ends of the channel unit (411) in the first direction (X), respectively.

10. The battery according to claim 9, wherein the channel unit (411) includes a plurality of channel units (411), all of which are spaced apart along a second direction (Y) intersecting a plane formed between the first direction (X) and the thickness direction (Z) and each communicating between the first and second sub-channels (42, 43).

11. The battery according to claim 6, wherein the support member (20) comprises a frame (21) and a support member (22) connected to the frame (21), the support member (22) is fixed with the battery cells (10) along opposite sides of the support member (20) in the thickness direction (Z), and the temperature control channel (41) is at least arranged in the support member (22).

12. The battery according to claim 11, wherein the temperature control structure (40) further comprises an inlet pipe (44) and an outlet pipe (45) provided on the frame (21), the inlet pipe (44) and the outlet pipe (45) both communicating with the temperature control channel (41).

13. The battery according to any one of claims 1 to 12, wherein the battery cells (10) comprise a plurality of, all of the battery cells (10) being fixed by a fixing structure (51) on at least one side of the support member (20) in the direction of its thickness (Z) to form at least one battery module (50).

14. The battery according to claim 13, further comprising a reinforcement member (24), wherein the reinforcement member (24) is protruded on a side of the support member (20) having the battery module (50), and a receiving cavity (23) for receiving the battery module (50) is formed between the support member (20) and the support member, and the fixing structure (51) is connected to the reinforcement member (24).

15. The battery according to claim 14, wherein the fixing structure (51) comprises an end plate (511), the end plate (511) is attached to one side surface of the battery cell (10), one end of the battery cell (10) exceeds the end plate (511), one end of the battery cell (10) exceeding the end plate (511) is installed in the accommodating cavity (23), and the end plate (511) is connected with the reinforcing member (24).

16. The battery according to claim 13, further comprising a guiding structure (60) having a lead-out opening (61), the guiding structure (60) being housed on the explosion-proof structure (12) of the same battery module (50).

17. The battery according to claim 16, wherein the guide structure (60) includes a guide plate (62), two side plates (63) provided at a distance from one side of the guide plate (62), and a closing plate (64) connected between the two side plates (63), and ends of the two side plates (63) away from the closing plate (64) and ends of the guide plate (62) form the lead-out port (61), respectively.

18. A battery according to any one of claims 1-12, characterized in that the thickness direction (Z) of the support member (20) coincides with the vertical direction.

19. An energy storage system comprising the battery of any one of claims 1-18.

20. An electrical device comprising the battery of any one of claims 1-18.