CN216389525U - Battery and electric equipment - Google Patents

Abstract

The application discloses a battery and a power consumption device. The battery includes: the battery comprises at least one battery cell, wherein an explosion-proof valve is arranged at the top area of the battery cell; the heat dissipation plate is internally provided with heat conduction liquid, is arranged above the battery monomer and at least partially covers the explosion-proof valve; and the non-top area of the battery monomer is provided with a pole. The application provides a battery, through setting up the heating panel setting in battery monomer bottom originally at battery monomer top to under the condition that does not need additionally to increase other structures, just can break through the heating panel through high temperature high-pressure gas when the battery takes place the thermal runaway, make the heat conduction liquid in the heating panel spray and play the purpose of putting out a fire the cooling, realize the control to battery thermal runaway phenomenon.

Description

Battery and electric equipment

Technical Field

The application relates to the technical field of battery thermal runaway, in particular to a battery and electric equipment.

Background

At present, from the development of market situation, the power battery is used in more and more fields and becomes more and more important.

In the prior art, thermal runaway of a battery can occur in the use process of a power battery, and a series of damages can be caused after the thermal runaway of the battery occurs.

Therefore, how to solve the damage caused by the thermal runaway of the battery becomes an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned technical problem, the application provides a battery and consumer, under the condition that does not need additionally to increase other structures, just can break through the heating panel through high temperature high-pressure gas when the battery takes place the thermal runaway for heat conduction liquid in the heating panel sprays and plays the purpose of putting out a fire the cooling, realizes the control to battery thermal runaway phenomenon.

In order to solve the above technical problem, an embodiment of the present application provides the following technical solutions:

in a first aspect, the present application provides a battery comprising: the top area of the battery monomer is provided with an explosion-proof valve; the heat dissipation plate is provided with heat conduction liquid and is arranged above the battery monomer, and at least part of the heat dissipation plate covers the explosion-proof valve.

In the technical scheme of the embodiment of the application, the application provides a battery, which comprises at least one battery monomer and a heat dissipation plate, wherein the top of the battery monomer is provided with an explosion-proof valve, the top is one side of a battery cover plate, the heat dissipation plate is used for dissipating heat of the battery monomer, the heat dissipation plate is arranged above the battery monomer, namely the heat dissipation plate is arranged above the explosion-proof valve, the heat dissipation plate originally arranged at the bottom of the battery monomer is arranged at the top of the battery monomer, so that the heat dissipation plate does not need to be additionally arranged, the size of the battery cannot be increased, too much space is not occupied, heat conduction liquid is arranged in the heat dissipation plate, when the battery is out of control due to heat, high-temperature air flow breaks the explosion-proof valve and the heat dissipation plate above the explosion-proof valve, the broken explosion-proof valve can discharge gas, explosion is avoided, and the heat conduction liquid in the broken heat dissipation plate can spray an out-of-control area, thereby solving the problem of open fire caused by overhigh temperature when the battery is out of control due to heat, and achieving the purposes of extinguishing fire and reducing temperature. The application provides a battery, through setting up the heating panel setting in battery monomer bottom originally at battery monomer top to under the condition that does not need additionally to increase other structures, just can break through the heating panel through high temperature high-pressure gas when the battery takes place the thermal runaway, make the heat conduction liquid in the heating panel spray and play the purpose of putting out a fire the cooling, realize the control to battery thermal runaway phenomenon.

In some embodiments, a non-top region of the battery cell is provided with a post. Thereby take place thermal runaway at the battery, the heating panel is broken through by high temperature gas, and when its inside heat conduction liquid sprayed, because utmost point post setting was regional at the free non-top of battery to heat conduction liquid can not spray to utmost point post on, reduced utmost point post contact heat conduction liquid and the insulating risk of inefficacy that causes.

In some embodiments, the terminal post is disposed at a bottom region of the battery cell disposed opposite the top region. Utmost point post sets up in the free bottom region of battery to be favorable to avoiding utmost point post more to be sprayed by heat conduction liquid, further avoided the problem of insulation failure, and set up the utilization that is favorable to the battery space at the regional utmost point post in bottom, reduced the space of battery and taken.

In some embodiments, the posts include a positive post and a negative post symmetrically disposed on a non-top region of the battery cell. The positive pole column and the negative pole column which are symmetrically arranged in the non-top area of the single battery can better realize the function of providing electric energy by the single battery.

In some embodiments, the explosion-proof valve is disposed at a central position of the top region of the battery cell. The explosion-proof valve arranged in the central area can ensure that the explosion-proof valve which is burst open can exhaust more smoothly when the battery is in thermal runaway, thereby providing safety.

In some embodiments, the battery further comprises a box body, the box body comprises a cover plate and a box body, the box body is used for accommodating the battery monomer, and the cover plate is used for covering the box body; wherein, the cover plate comprises a heat dissipation plate. At least one battery monomer sets up in the box body, and the apron lid including the heating panel closes on the box body, and the heating panel is at least part of the apron on the box body promptly to need not additionally to set up the heating panel, the cost is reduced has reduced the occupation in space, and the structure is more stable.

In some embodiments, the side wall or the bottom wall of the box body, which is opposite to the pole, is of a non-metal structure. The diapire or the lateral wall of non-metallic structure can not take place electrically conductively with between the utmost point post to lateral wall or the diapire that set up relatively with utmost point post can not influence the insulation of utmost point post, avoid the production of insulation failure problem.

In some embodiments, the heat dissipation plate has a heat conduction channel therein, and a heat conduction liquid can flow through the heat conduction channel. Thereby hold heat conduction liquid through the heat conduction passageway, heat conduction liquid is at the heat conduction passageway inner loop flow to carry out the heat exchange with the battery monomer that the below set up, with reduce or improve the free temperature of battery, thereby reduce the risk that the battery takes place to damage, improved the life-span of battery. And the heat conduction channel is arranged, so that when the battery is out of control due to heat, high-temperature airflow can break through the heat conduction channel on the heat dissipation plate, heat conduction liquid in the heat conduction channel sprays the position out of control below, the effect of lowering the temperature and extinguishing fire is achieved, and the problems of overhigh temperature and open fire generation due to the out of control due to the heat of the battery are solved.

In some embodiments, the position of the thermally conductive path corresponds at least to the position of the explosion-proof valve. Thereby when the battery takes place out of control, high-temperature gas still can directly break through the heat conduction passageway that sets up with explosion-proof valve relatively at least when breaking through explosion-proof valve for heat conduction liquid in the heat conduction passageway can spray fast, with the cooling processing of putting out a fire to the region of out of control through spraying of heat conduction liquid, thereby reduced the risk, improved the security.

In some embodiments, a side of the heat dissipation plate facing the battery cell has a heat conductive structure. The arrangement of the heat conduction structure can accelerate the heat transfer between the heat dissipation plate and the battery monomer, thereby accelerating the speed of reducing or improving the temperature of the battery module and reducing the probability of thermal runaway of the battery.

In some embodiments, the heat dissipation plate includes a first plate and a second plate, a first structure is disposed on a side of the first plate facing the second plate, the first plate and the second plate are fastened together, and the first structure and the second plate form a heat conduction channel for containing a heat conduction liquid. When first plate body and second plate body lock promptly, first structure on the first plate body forms the heat conduction passageway with second plate body lock, and the heat conduction passageway is the heating panel just partly that forms when making promptly, need not additionally place the pipeline in order to form the heat conduction passageway in heat conduction passageway inside to the heat conduction passageway structure that this application provided is more stable, makes things convenient for shaping and manufacturing, and is favorable to the circulation of heat conduction liquid more.

In a second aspect, the present application provides a powered device, which includes the battery in the above embodiments, and the battery is used for providing electric energy.

The powered device may be any of the aforementioned battery-powered devices or systems.

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

Drawings

Various additional 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. Moreover, like reference numerals are used to refer to like elements throughout. In the drawings:

fig. 1 is an exploded view of a battery provided in accordance with some embodiments of the present application;

fig. 2 is an exploded view of a battery cell provided in accordance with some embodiments of the present application;

fig. 3 is a schematic structural diagram of a heat dissipation plate according to some embodiments of the present application;

the reference numbers in the detailed description are as follows:

the battery 1, the single battery 11, the explosion-proof valve 111, the pole 112, the positive pole 1121, the negative pole 1122, the heat sink plate 12, the heat conducting channel 121, the first pipeline 1211, the second pipeline 1212, the third pipeline 1213, the fourth pipeline 1214, the liquid outlet 1215, the liquid inlet 1216, the box 13 and the box body 131.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

At present, from the development of market situation, the power battery is not only applied to energy storage power 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, and a plurality of fields such as military equipment and aerospace and the like. With the continuous expansion of the application field of the power battery, the market demand is also continuously expanding.

The applicant notices that along with the continuous expansion of the battery application field, the safety of the battery becomes more important, when the battery monomer is out of control due to heat, high temperature and high pressure are discharged from the battery monomer, at the moment, high temperature and high pressure gas can burst the explosion-proof valve and the heat dissipation plate, the explosion-proof valve can discharge the high temperature and high pressure gas, and the high temperature and high pressure gas is easy to generate open fire due to overhigh temperature in the discharging process, so that the danger is caused, and the potential safety hazard is caused.

In order to alleviate the problem that the temperature is too high when the battery cell is out of control, the applicant researches and finds that the heat dissipation plate which is originally arranged below the battery cell and provided with heat conduction liquid can be changed into a heat dissipation plate arranged above the battery cell in design, so that other structures do not need to be additionally arranged, and more space is not occupied. When battery monomer takes place the thermal runaway, through the blowout of high temperature high-pressure gas, can break through explosion-proof valve and the heating panel that has heat conduction liquid, the break through of explosion-proof valve is opened and can be let gas outgoing, and the break through of heating panel can make heat conduction liquid flow to the cooling of putting out a fire to the region of out of control, thereby do not need additionally to increase other structures, on the basis that does not occupy more spaces, avoided the potential safety hazard, improve the security.

Based on the above consideration, in order to solve the problem of too high temperature caused by thermal runaway of the battery cells, through intensive research, the applicant designs a battery, which comprises at least one battery cell and a heat dissipation plate, wherein an explosion-proof valve is arranged in the top area of the battery cell, the heat dissipation plate is arranged above the battery cell, and heat conduction liquid is arranged in the heat dissipation plate, so that when the heat dissipation plate is broken, the heat conduction liquid flows out to extinguish fire and cool the battery.

In such battery, owing to the heating panel setting that will have heat conduction liquid is in battery monomer top to when battery monomer takes place the thermal runaway, can break through the heating panel, make the heat conduction liquid in the heating panel flow out, with the cooling of putting out a fire to battery monomer and near out of control region, thereby avoid taking place danger, improved the security.

The battery disclosed in the embodiment of the present application can be used in electric devices such as vehicles, ships or aircrafts, but not limited thereto. The power supply system of the electric device can be formed by the battery disclosed by the application, so that the danger of the electric device in use can be reduced, and the safety of the battery can be improved.

The embodiment of the application provides an electric device using a battery as a power supply, wherein the electric 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 automobile, a ship, a spacecraft and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

The battery may be located at the bottom or at the head or tail of the vehicle. The battery may be used for power supply of the vehicle, for example, the battery may serve as an operation power source of the vehicle. The vehicle may also include a controller and a motor, the controller being used to control the battery to power the motor, for example, for start-up, navigation, and operational power requirements while traveling of the vehicle.

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

For convenience of explanation, the following examples will be described with reference to a battery 1 according to an embodiment of the present application.

Referring to fig. 1, fig. 1 is an exploded view of a battery 1 according to some embodiments of the present disclosure. The battery 1 comprises a heat dissipation plate 12, a box body 13 and a battery cell 11, wherein the box body 13 is provided with an upper cover plate, the heat dissipation plate 12 is the upper cover plate of the box body 13, the battery cell 11 is accommodated in the box body 13, and the heat dissipation plate 12 is covered above the battery cell 11. The case 13 is used to provide a receiving space for the battery cells 11, and the case 13 may have various structures. The case 13 may have various shapes, for example, a cylindrical shape, a rectangular parallelepiped shape, etc.

In the battery 1, the number of the battery cells 11 may be plural, and the plural battery cells 11 may be connected in series or in parallel or in series-parallel, where in series-parallel refers to both series connection and parallel connection among the plural battery cells 11. The plurality of battery monomers 11 can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery monomers 11 is accommodated in the box body 13; of course, the battery 1 may also be formed by connecting a plurality of battery cells 11 in series, in parallel, or in series-parallel to form a battery 1 module, and then connecting a plurality of battery 1 modules in series, in parallel, or in series-parallel to form a whole, and accommodating the whole in the box 13. The battery 1 may further include other structures, for example, the battery 1 may further include a bus member for achieving electrical connection between the plurality of battery cells 11.

The battery cell 11 refers to the smallest unit constituting the battery 1, and is also called a battery core or a single battery. The battery cell 11 includes an end cap (not shown), a case (not shown), an electrode assembly (not shown), an explosion-proof valve 111, a terminal post 112, and other functional components.

The end cap refers to a member that covers an opening of the case to insulate the internal environment of the battery cell 11 from the external environment. Without limitation, the shape of the end cap may be adapted to the shape of the housing to fit the housing. Alternatively, the end cap may be made of a material (e.g., an aluminum alloy) having a certain hardness and strength, so that the end cap is not easily deformed when being extruded and collided, and the single battery 11 may have a higher structural strength and an improved safety performance. An explosion-proof valve 111 is arranged above the end cover, the explosion-proof valve 111 is a pressure relief mechanism which is used for releasing the internal pressure when the internal pressure or temperature of the battery monomer 11 reaches a threshold value, and is broken and opened by high-temperature and high-pressure gas when the battery monomer is out of control due to heat, so that exhaust is performed, and explosion caused by overhigh pressure is avoided. The bottom of the housing is provided with a battery cell post 112, and the battery cell post 112 includes a positive electrode post 1121 and a negative electrode post 1122 for outputting or inputting the electric energy of the battery cell 11. The end cap may be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in this embodiment. In some embodiments, insulation may also be provided on the inside of the end cap, which may be used to isolate the electrical connections within the housing from the end cap to reduce the risk of shorting. Illustratively, the insulator may be plastic, rubber, or the like.

The housing is an assembly for mating with end caps to form an internal environment for the cell 11, wherein the formed internal environment may be used to house the cell, electrolyte, and other components. The housing and the end cap may be separate components, and an opening may be formed in the housing, and the opening may be covered by the end cap to form the internal environment of the battery cell 11. The end cap and the housing may be integrated, and specifically, the end cap and the housing may form a common connecting surface before other components are inserted into the housing, and when the interior of the housing needs to be sealed, the end cap covers the housing. The housing may be of various shapes and sizes, such as rectangular parallelepiped, cylindrical, hexagonal prism, etc. Specifically, the shape of the case may be determined according to the specific shape and size of the battery cell. The material of the housing may be various, for example, copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not limited in this application.

The electrode assembly is a part in which electrochemical reactions occur in the battery cell 11. One or more electrode assemblies may be contained within the housing. The electrode assembly is mainly formed by winding or stacking a positive electrode sheet and a negative electrode sheet, and a separator is generally disposed between the positive electrode sheet and the negative electrode sheet. The portions of the positive and negative electrode tabs having the active material constitute the body portions of the electrode assembly, and the portions of the positive and negative electrode tabs having no active material each constitute a tab. The positive electrode tab and the negative electrode tab may be located at one end of the main body portion together or at both ends of the main body portion, respectively. During the charge and discharge of the battery 1, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tabs are connected to the electrode terminals to form a current loop.

Referring to fig. 1, the present application provides a battery 1 according to some embodiments of the present application. The heat dissipation plate comprises at least one battery cell 11 and a heat dissipation plate 12, wherein an explosion-proof valve 111 is arranged at the top area of the battery cell 11; the heat dissipation plate 12 has a heat conductive liquid therein, and the heat dissipation plate 12 is disposed above the battery cell 11 and at least partially covers the explosion-proof valve 111.

The top of the battery cell 11 is provided with an explosion-proof valve 111, the top of the battery cell 11 is one side of the cover plate, the explosion-proof valve 111 is formed on the top of the battery cell 11 through nicking or welding, and the heat dissipation plate 12 covers the battery cell 11 and at least covers the explosion-proof valve 111. That is, the battery 1 is configured by the battery cell 11, the explosion-proof valve 111, and the heat dissipation plate 12 in this order. The heat dissipation plate 12 has a heat conductive liquid therein, and the heat conductive liquid can absorb and discharge heat to realize heat exchange with the lower battery cell 11.

This application will be located the heating panel 12 setting of battery cell 11 bottom originally at battery cell 11's top to under the condition that does not additionally increase heating panel 12, the cooling of putting out a fire when just can realizing battery thermal runaway. When the battery is out of control due to heat, high-temperature high-pressure gas can break the explosion-proof valve 111 above when reaching a certain temperature or pressure, the explosion-proof valve 111 is broken, the explosion-proof valve 111 is opened by breaking, high-temperature high-pressure gas can be discharged, the explosion is avoided, the danger is reduced, the high-temperature high-pressure gas can break the heat dissipation plate 12 above the explosion-proof valve 111 while breaking the explosion-proof valve 111, heat conduction liquid is arranged in the heat dissipation plate 12, the heat dissipation plate 12 is sprayed to an out-of-control area below after being broken, the effects of extinguishing and cooling are achieved, open flames caused by overhigh temperature are avoided, and the fire hazard is avoided. The application provides a battery 1 promptly, only need will originally set up heating panel 12 in battery cell 11 below and set up on battery cell 11, need not increase battery 1's volume and area occupied, just can play the purpose of putting out a fire the cooling when battery 1 takes place thermal runaway, realizes the control to battery 1 thermal runaway.

Referring to fig. 2, fig. 2 is an exploded view of a battery cell provided in some embodiments of the present application, and according to some embodiments of the present application, a non-top region of the battery cell 11 is provided with a terminal post 112.

The single battery 11 includes a top region, a bottom region and a plurality of side regions, the explosion-proof valve 111 is disposed at the top region of the single battery 11, the heat dissipation plate 12 is disposed above the single battery 11, i.e., the heat dissipation plate 12 is disposed opposite to the top region of the single battery 11, and the post 112 is disposed at the non-top region of the single battery 11, i.e., the post 112 may be disposed at the bottom region or the side region of the single battery 11, as long as it is not disposed at the top region.

The upper pole 112 of the battery cell 11 is not arranged in the top area opposite to the heat dissipation plate 12, so that when thermal runaway occurs in the battery 1, the heat dissipation plate 12 is broken through and sprayed with heat conduction liquid, and the heat conduction liquid cannot be sprayed onto the pole 112 on the non-top area, so that the risk of insulation failure caused by the fact that the pole 112 contacts with the heat conduction liquid is avoided.

Referring to fig. 2, according to some embodiments of the present application, the terminal post 112 is disposed at a bottom region of the battery cell 11 disposed opposite to the top region.

The top region of the battery cell 11 is disposed opposite the bottom region.

The terminal post 112 is disposed in the bottom region of the battery cell 11, so as to be more favorable for avoiding being sprayed by the heat-conducting liquid, and further avoid the problem of insulation failure. And when being connected with adjacent battery monomer 11, the terminal post 112 arranged at the bottom area is convenient for the connection between the adjacent battery monomers 11, and the occupied space is small, thereby being beneficial to the utilization of the space of the battery 1 and reducing the occupied space of the battery 1.

Referring to fig. 2, according to some embodiments of the present disclosure, the terminal post 112 includes a positive terminal post 1121 and a negative terminal post 1122, and the positive terminal post 1121 and the negative terminal post 1122 are symmetrically disposed on a non-top region of the battery cell 11.

Preferably, the positive electrode post 1121 and the negative electrode post 1122 are symmetrically disposed on the bottom region of the battery cell 11.

The positive electrode post 1121 and the negative electrode post 1122 symmetrically disposed on the non-top region of the battery cell 11 can better provide the electric energy to the battery cell 11.

Referring to fig. 1, according to some embodiments of the present application, an explosion-proof valve 111 is disposed at a central position of a top region of a battery cell 11.

The top region of the battery cell 11 includes a middle position, which is the center of the top of the entire battery cell 11, and an edge position.

The explosion-proof valve 111 is arranged in the middle of the top area of the battery cell 11, and the exhaust of the explosion-proof valve 111 in the middle is smooth when the explosion-proof valve is opened, so that the battery is more favorable for discharging high-temperature gas when thermal runaway occurs, the explosion is further avoided, and the safety and the reliability are further improved.

Referring to fig. 1, according to some embodiments of the present application, the battery 1 further includes a case 13, the case 13 includes a cover plate and a case body 131, the case body 131 is used for accommodating the battery cells 11, and the cover plate is used for covering the case body 131; wherein the cover plate comprises a heat sink plate 12.

The battery 1 comprises at least one battery cell 11 and a box body 13, wherein the at least one battery cell 11 is arranged in the box body 13, the box body 13 comprises a cover plate and a box body 131, the cover plate is covered on the box body 131, the cover plate comprises a heat dissipation plate 12, namely, one part of the cover plate is the heat dissipation plate 12, and the cover plate is the heat dissipation plate 12.

The apron is including heating panel 12, is about to heating panel 12 and apron integration be a structure, need not set up one deck heating panel 12 again on the apron to reduce the setting of structure and the waste in space, practiced thrift the cost, can also improve the radiating effect simultaneously, the structure is also more stable. When the battery is out of control due to heat, the cover plate comprising the heat dissipation plate 12 is directly broken, and the cover plate is not required to be broken and then the heat dissipation plate 12 above is broken, so that the speed is higher, the fire can be extinguished and cooled more timely, and the safety is improved.

According to some embodiments of the present application, the side wall or the bottom wall of the box body 131 opposite to the pole 112 is of a non-metal structure.

The battery cell 11 is disposed inside the box 13, and the non-top region of the battery cell 11 is provided with the pole 112, so that the side wall or the bottom wall of the box 13 is disposed opposite to the pole 112.

The lateral wall or the bottom wall that will set up relative with utmost point post 112 sets up to non-metallic structure, and non-metallic structure's bottom wall or lateral wall can not and utmost point post 112 between take place electrically conductively to lateral wall or the bottom wall that set up relative with utmost point post 112 can not influence utmost point post 112's insulation, avoid the production of insulation failure problem.

Referring to fig. 1, and also referring to fig. 3, according to some embodiments of the present application, the heat dissipation plate 12 has a heat conduction path 121 inside, and a heat conduction liquid can flow through the heat conduction path 121.

The heat dissipation plate 12 is provided with a heat conduction channel 121 inside, the heat conduction channel 121 is provided with a liquid inlet 1216 and a liquid outlet 1215, heat conduction liquid enters the heat conduction channel 121 from the liquid inlet 1216, and then flows through the heat conduction channel 121 in the heat dissipation plate 12 and is discharged from the liquid outlet 1215, so as to realize the flow of the heat conduction liquid in the heat conduction channel 121, the heat conduction liquid can absorb and emit heat, thereby realizing the heat exchange with the battery cell 11 below, and further realizing the heat dissipation or heating of the battery cell 11. Preferably, the heat conductive paths 121 are uniformly distributed inside the heat dissipation plate 12.

The setting of the heat conduction channel 121 of the circulated heat conduction liquid in the heat dissipation plate 12 can realize the absorption or emission of the heat of the battery cell 11 below, thereby carrying out heat exchange with the battery cell 11, reducing the risk of damage to the battery 1 and prolonging the service life of the battery 1. And the heat conduction channel 121 is arranged, so that when the battery is out of control due to heat, high-temperature airflow can break through the heat conduction channel 121 on the heat dissipation plate 12, heat conduction liquid in the heat conduction channel 121 sprays the position out of control below, the effect of temperature reduction and fire extinguishment is achieved, and the problems of overhigh temperature and open fire due to battery out of control due to heat are solved.

Referring to fig. 1 and 3, according to some embodiments of the present application, the position of the heat conducting channel 121 corresponds to at least the position of the explosion proof valve 111.

The heat conducting channel 121 is composed of a plurality of heat conducting pipes which are communicated with each other, and a plurality of heat conducting pipes are distributed in the heat dissipation plate 12 and concentrated above each battery cell 11 to realize heat dissipation or heating of the battery cells 11.

Wherein the heat conducting channel 121 comprises a plurality of first pipes 1211, a second pipe 1212, a third pipe 1213 and a fourth pipe 1214, the second pipe 1212 is connected to the first ends of the plurality of first pipes 1211, the third pipe 1213 is connected to the second end of a part of the first pipes 1211, the fourth pipe 1214 is connected to the second end of another part of the first pipes 1211, so that the second ends of the first pipes 1211 are connected to each other through the third pipe 1213 and the fourth pipe 1214, and the heat conducting liquid in the plurality of first pipes 1211 is circulated, and the liquid inlet 1216 is disposed on the third pipe 1213, the liquid outlet 1215 is disposed on the fourth pipe 1214, the third pipe 1213 is connected to the second end of a part of the first pipes 1211, the fourth pipe 1214 is connected to the second end of another part of the first pipes 1211, i.e. the liquid inlet 1216 and the liquid outlet 1215 are not directly connected, and the heat conducting liquid is not directly discharged from the liquid outlet 1215 after entering the flow channel, the heat-conducting liquid entering from the liquid inlet 1216 firstly enters the third pipeline 1213, enters a part of the first pipeline 1211 communicated with the third pipeline 1213 from the third pipeline 1213, is transmitted to the first end of the first pipeline 1211, enters another part of the first pipeline 1211 through the second pipeline 1212 communicated with the first end of the first pipeline 1211, and is transmitted to the liquid outlet 1215 of the fourth pipeline 1214 through another part of the first pipeline 1211, so that the travel range of the heat-conducting liquid in the flow channel is enlarged, the heat-conducting liquid can exchange heat with the battery cell 11 in a large range, and the heat-conducting efficiency is improved.

The heat pipe in the heat conduction channel 121 sets up with explosion-proof valve 111 relatively, and when taking place the thermal runaway, the heat pipe that sets up with explosion-proof valve 111 relatively can take place to break more fast more easily to realize that heat conduction liquid sprays fast, with the cooling processing of putting out a fire to the region of out of control, thereby reduced the risk, improved the security.

According to some embodiments of the present application, a side of the heat dissipation plate 12 facing the battery cell 11 has a heat conductive structure.

The heat conduction structure sets up in the one side of heating panel 12 towards battery cell 11 to can be fast with battery cell 11's heat transmission to heating panel 12, perhaps with heating panel 12's heat transmission to battery cell 11, with realize the inside heat conduction liquid of heating panel 12 and battery cell 11's heat exchange fast, thereby reduce or improve battery cell 11's temperature. The heat conducting structure may be a heat dissipation grid or a heat dissipation fin. By providing the heat dissipation grid or the heat dissipation fins, the efficiency of heat exchange between the battery cells 11 and the heat dissipation plate 12 can be improved.

The arrangement of the heat conduction structure can accelerate the heat transfer between the heat dissipation plate 12 and the battery cell 11, thereby accelerating the heat conduction speed and reducing the probability of thermal runaway of the battery.

According to some embodiments of the present application, the heat dissipation plate 12 includes a first plate and a second plate, a first structure is disposed on a side of the first plate facing the second plate, the first plate and the second plate are fastened together, and the first structure and the second plate form a heat conduction channel 121 for accommodating a heat conduction liquid.

First plate body and second plate body set up relatively, just can form heating panel 12 after relative first plate body and the lock of second plate body that sets up, and the one side towards the second plate body on the first plate body is provided with first structure, the second plate body is platelike structure, first structure is the cell body that forms heat conduction passageway 121, and the plate body setting of first structure perpendicular to first plate body, after first plate body and the lock of second plate body, first structure is fixed with the second plate body towards the one end of second plate body, form the heat conduction passageway 121 that can circulate heat conduction liquid with this.

Through the setting of first structure and second plate body on the first plate body for heat conduction channel 121 of heating panel 12 need not additionally set up, just can form when making with formation heating panel 12, need not additionally place the pipeline in order to form heat conduction channel 121 in heating panel 12 inside, thereby the heat conduction channel 121 structure that this application provided is more stable, makes things convenient for shaping and manufacturing, and is favorable to the circulation of heat conduction liquid more.

According to some embodiments of the present application, the present application further provides an electric device, including the battery 1 of any of the above aspects, and the battery 1 is used for providing electric energy for the electric device.

The powered device may be any of the aforementioned apparatuses or systems that employ the battery 1.

The battery 1 provided by the present application comprises at least one battery cell 11 and a box 13, wherein the at least one battery cell 11 is disposed in the box 13, the box 13 comprises a box body 131 and a cover plate, the cover plate comprises a heat dissipation plate 12, an explosion-proof valve 111 is disposed in the top area of the battery cell 11, and the explosion-proof valve 111 is located in the middle position of the top area, so that when the battery is out of control due to heat, the explosion-proof valve 111 at the top of the battery cell 11 can be broken and opened under the impact of high-temperature and high-pressure airflow, so that the gas is discharged, and the explosion-proof valve 111 located in the middle position of the top area exhausts more smoothly, so as to prevent explosion, and a heat dissipation plate 12 is further disposed above the explosion-proof valve 111, the heat dissipation plate 12 is disposed at the top of the battery cell 11, so that no new heat dissipation plate 12 is additionally disposed, and the volume and the occupied space of the battery 1 are not increased, after the explosion-proof valve 111 is broken, the heat dissipation plate 12 is also broken, so that the heat-conducting liquid in the heat dissipation plate 12 can be sprayed to extinguish a fire and reduce the temperature of an out-of-control area, the phenomenon of open fire caused by overhigh temperature is avoided, the danger is reduced, and the control of the thermal out-of-control phenomenon of the electrode assembly is realized. And utmost point post 112 sets up the bottom region relative setting with the top region in battery monomer 11, thereby can not spray to utmost point post 112 when heat conduction liquid sprays, the problem of the insulating inefficacy that utmost point post 112 leads to because of contacting heat conduction liquid has been avoided, in addition, because the apron includes heating panel 12, thereby only need establish an apron at battery monomer 11 upper cover and can realize the heat dissipation, and put out a fire the cooling when battery thermal runaway, integrate into a structure with apron and heating panel 12, the cost is reduced, the occupation in space has been reduced, and the structure is more stable.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions 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 solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (11)

1. A battery, comprising:

the battery comprises at least one battery cell, wherein an explosion-proof valve is arranged at the top area of the battery cell;

the heat dissipation plate is internally provided with heat conduction liquid, is arranged above the battery monomer and at least partially covers the explosion-proof valve;

and the non-top area of the battery monomer is provided with a pole.

2. The battery of claim 1,

the pole is arranged at the bottom area of the battery monomer opposite to the top area.

3. The battery of claim 1,

the post comprises an anode post and a cathode post, wherein the anode post and the cathode post are symmetrically arranged on the non-top area of the battery.

4. The battery of claim 1,

the explosion-proof valve is arranged at the central position of the top area of the battery cell.

5. The battery of claim 1,

the battery also comprises a box body, the box body comprises a cover plate and a box body, the box body is used for accommodating the battery monomer, and the cover plate is used for covering the box body;

wherein the cover plate includes the heat dissipation plate.

6. The battery of claim 5,

the side wall or the bottom wall of the box body, which is opposite to the pole, is of a non-metal structure.

7. The battery of claim 1,

the heat dissipation plate is internally provided with a heat conduction channel, and heat conduction liquid can flow through the heat conduction channel.

8. The battery of claim 7,

the position of the heat conduction channel at least corresponds to the position of the explosion-proof valve.

9. The battery of claim 1,

one side of the heat dissipation plate facing the battery cell is provided with a heat conduction structure.

10. The battery of claim 1 or 5,

the heat dissipation plate comprises a first plate body and a second plate body, wherein a first structure is arranged on one surface of the first plate body facing the second plate body, the first plate body is buckled with the second plate body, and the first structure and the second plate body form a heat conduction channel for containing heat conduction liquid.

11. An electrical device comprising a battery according to any one of claims 1 to 10.

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