CN217719740U - Battery and power consumption device - Google Patents

Abstract

The application relates to a battery and power consumption device, include: at least two groups of battery modules; the heat exchange assembly comprises at least two heat exchange plates and is used for exchanging heat with all the battery modules; each group of battery module corresponds to each heat exchange plate and is constructed together to form a heat exchange unit, and at least two heat exchange plates in all the heat exchange units are arranged at intervals and independently. Through setting up in whole heat transfer unit at least heat transfer board interval between them and independent setting, when the battery is out of control for in two sets of battery modules that two intervals and two heat transfer boards that independently set up correspond, can not connect through these two heat transfer board electricity, for the condition that all battery modules adopted the heat transfer board of an organic whole setting among the prior art, the probability that the arc discharge phenomenon takes place has been lacked, has reduced the potential safety hazard.

Description

Battery and power consumption device

Technical Field

The present application relates to the field of battery technology, and in particular, to a battery and an electric device.

Background

Energy conservation and emission reduction are the key points of sustainable development of the automobile industry, and electric vehicles become important components of the sustainable development of the automobile industry due to the advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor in its development.

When the battery is out of control, the battery monomer easily with the heat transfer board overlap joint, adjacent two sets of battery modules pass through the heat transfer board electricity and connect to there is the high pressure between making two sets of battery modules, easily produce the arc discharge phenomenon, there is the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present application provides a battery and an electric device that can alleviate an arc discharge phenomenon occurring in the battery.

In a first aspect, the present application provides a battery comprising:

at least two groups of battery modules; and

the heat exchange assembly comprises at least two heat exchange plates and is used for exchanging heat with all the battery modules;

each group of battery module corresponds to each heat exchange plate and forms a heat exchange unit together, and at least two heat exchange plates in all the heat exchange units are arranged at intervals and independently.

In the technical scheme of this application embodiment, through setting up in whole heat transfer unit at least heat transfer board interval between them and independently setting up, when the battery is out of control for in two sets of battery modules that two heat transfer boards that two intervals and independently set up correspond, can not connect through these two heat transfer board electricity, for the condition that all battery modules adopt the heat transfer board of an organic whole setting among the prior art, the probability that the arc discharge phenomenon takes place has been lacked, has reduced the potential safety hazard.

In some embodiments, the battery further comprises a first insulating member, and the first insulating member is arranged between two heat exchange plates which are arranged at intervals. Like this, it has first insulating part to fill between two heat transfer boards that the interval set up, under the condition of guaranteeing not electrically conductible between two spaced heat transfer boards, has played the effect of blocking high pressure for first insulating part promptly, has still filled the clearance between two heat transfer boards, has improved the holistic structural strength of battery.

In some embodiments, the first insulator is a rubber. Set up first insulating part into the rubber spare, under the prerequisite of guaranteeing better insulating nature, make the intensity of battery higher.

In some embodiments, the heat exchange plates of every two adjacent heat exchange units are spaced and independently arranged. Like this, the equal interval of heat transfer board of whole heat transfer unit and independent setting, and because the correspondence is equipped with a battery module on every heat transfer board, then all do not have the relation of connection between the heat transfer board that every battery module corresponds, a battery module and an independent heat transfer board heat transfer promptly, when the battery monomer of any battery module breaks down, can not be through the heat transfer board rather than the heat transfer with locating the battery module electricity on the other heat transfer board and be connected, the arc discharge phenomenon has obtained very big improvement, the potential safety hazard has greatly been reduced.

In some embodiments, a pressure relief mechanism is arranged on the surface of the heat exchange plate where the battery monomer faces the battery monomer in each group of the battery module, and an avoiding hole for avoiding the pressure relief mechanism is formed in the heat exchange plate. When the single battery needs to be decompressed, the pressure relief mechanism can be avoided due to the avoidance hole, and the interference of the heat exchange plate on the opening of the pressure relief mechanism is avoided.

In some embodiments, the battery further comprises a first spill-proof member, and the first spill-proof member is attached to the at least one heat exchange unit between the battery module and the heat exchange plate;

wherein, first anti-overflow spare is located dodge at least one side of hole periphery. Through locating first anti-overflow spare in the at least one side of the periphery of dodging the hole, in pressurization process, can prevent to glue from overflowing to dodging the hole and with its shutoff between battery module and the heat transfer board to pressure relief mechanism's normal opening has been guaranteed.

In some embodiments, the first spill guard is a spill guard strip. On the one hand, the adhesive tape is softer, and in the pressurization process, softer adhesive tape can produce certain deformation, does benefit to the bonding of battery module and heat transfer board. On the other hand, the first strip-shaped anti-overflow piece can simultaneously block the glue from flowing into a plurality of avoiding holes, namely, the first anti-overflow piece can be protected by the plurality of avoiding holes.

In some embodiments, at least one group of the battery modules further includes a support member, and the support member is disposed between at least two battery cells in the currently located battery module. Through setting up support piece between two at least battery monomers of battery module, then greatly improved the lateral strength of battery module, promoted the structural strength of battery.

In some embodiments, the support is an adhesive. The adhesive not only can support the single battery, but also can bond the single battery, so that the strength of the battery module is further improved.

In some embodiments, the battery further includes a second overflow prevention member, and the second overflow prevention member is disposed on a side, close to the heat exchange plate, of an end surface of at least one group of the battery modules, and is used for shielding gaps between battery cells included in the battery modules.

In some embodiments, the second spill guard is a foam strip. Through setting up the second anti-overflow spare, can prevent that glue from overflowing to the free side of battery from the R angle of battery monomer bottom to make things convenient for the assembly of other structures (such as baffle, following).

In some embodiments, two of the battery modules are defined as a pairing group;

the battery also comprises a third anti-overflow piece which is insulating, one end of the third anti-overflow piece is arranged between one group of battery modules in the matching group and the corresponding heat exchange plate, and the other end of the third anti-overflow piece is arranged between the other group of battery modules in the matching group and the corresponding heat exchange plate so as to shield the gaps between the battery monomers included in the battery modules. Through setting up the third anti-overflow piece, can shield the clearance between the battery monomer that battery module includes, can prevent to glue and overflow to the free side of battery from the R angle of battery monomer bottom to make things convenient for the assembly of other structures.

In a second aspect, the present application provides an electric device, which is characterized by comprising the battery according to the above embodiment.

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 a schematic illustration of a vehicle according to some embodiments of the present application;

fig. 2 is an exploded view of a battery 100 provided in accordance with some embodiments of the present application;

fig. 3 is a partial structural view of the battery shown in fig. 2;

fig. 4 is a partial structural view of the battery shown in fig. 2;

FIG. 5 is a block diagram of a heat exchange plate of the battery shown in FIG. 2;

fig. 6 is a view showing a structure of still another layout of the battery shown in fig. 2;

figure 7 isbase:Sub>A schematic cross-sectional view of the planebase:Sub>A-base:Sub>A of the structure shown in figure 6.

The reference numerals in the detailed description are as follows:

1000. a vehicle; 100. a battery; 200. a controller; 300. a motor; 10. a box body; 11. a first portion; 12. a second portion; 20. a battery module; 21. a battery cell; 211. a pressure relief mechanism; 212. a support member; 30. a heat exchange assembly; 31. a heat exchange plate; 311. avoiding holes; 40. a first spill prevention member; 50. a second spill prevention member; 60. a third overflow prevention member; 70. a partition plate; 80. an end plate; 90. side plates.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present application more clearly, and therefore are only used as 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 the association 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 sets), "plural pieces" refers to two or more (including two pieces).

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 specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning 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, the application of the power battery is more and more extensive from the development of market situation. The power battery is not only widely applied to energy storage power supply systems of hydraulic power, firepower, wind power, solar power stations and the like, 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, aerospace and the like. With the continuous expansion of the application field of the power battery, the market demand is also continuously expanding.

The inventors have observed that batteries are prone to runaway in some situations, such as when overcharged, bumped, or shorted. For example, as the positive electrode active material and the negative electrode active material are intercalated into or deintercalated from ions in the charge and discharge cycles of the battery, the battery core expands due to the side reaction stacking thickness of the battery core system, the peeling of the graphite flakes and the like, i.e., the positive electrode sheet and the negative electrode sheet expand outwards. The expansion of the pole piece has adverse effects on the performance and the service life of the battery, and the pole piece can break to cause short circuit risk in the battery when bearing large extrusion force for a long time, so that the battery is out of control.

Because all battery modules all dispel the heat through integrative heat transfer board that sets up, and when the battery was out of control, battery monomer was easy and heat transfer board overlap joint, and the battery module at battery monomer place was connected with the heat transfer board electricity this moment, like this, easily causes to have the high pressure between the battery module that the battery is adjacent, if the high pressure that is greater than 200V, produces arc discharge (arc) phenomenon, brings the potential safety hazard.

In order to alleviate the arc discharge phenomenon, the applicant researches and discovers that the condition that the battery modules are electrically connected through the heat exchange plate can be reduced or avoided in design.

Based on above consideration, in order to solve the battery when out of control, the battery module is connected and then has high pressure through the integrative heat transfer board electricity that sets up, easily produces the arc discharge phenomenon, has the problem of potential safety hazard, and the inventor has designed a battery through deep research. The battery comprises a heat exchange assembly and at least two groups of battery modules, wherein the heat exchange assembly comprises at least two heat exchange plates. Every group battery module and every heat transfer board structure form a heat transfer unit, and the heat transfer board interval of at least both sets up independently among all heat transfer units.

In such battery, because heat transfer board interval and the independent setting between at least two among whole heat transfer unit, also have two piece at least intervals and the heat transfer board of independent setting for the battery, when the battery is out of control, lie in the battery module on one in the heat transfer board of two intervals and independent setting, can not pass through the heat transfer board with the battery module on another and be connected electrically, and then reduced the probability that the arc discharge phenomenon takes place, reduced the potential safety hazard.

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 with the battery disclosed by the application can be used, so that the probability of arc discharge is reduced, and potential safety hazards are reduced.

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.

For convenience of description, the following embodiments are described by taking an electric device according to an embodiment of the present application as an example of a vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present disclosure. The vehicle 1000 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or a range-extended automobile, etc. The battery 100 is provided inside 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 serve as an operation power source of the vehicle 1000. The vehicle 1000 may further include a controller 200 and a motor 300, the controller 200 being configured to control the battery 100 to supply power to the motor 300, for example, for starting, navigation, and operational power requirements while the vehicle 1000 is traveling.

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

Referring to fig. 2, fig. 2 is an exploded view of a battery 100 according to some embodiments of the present disclosure. The battery 100 includes a case 10 and a plurality of battery modules 20, and the plurality of battery modules 20 are connected in series or in parallel or in series-parallel to form a whole and are accommodated in the case 10. The case 10 provides a space for accommodating the battery module 20, and the case 10 may have various structures. In some embodiments, the case 10 may include a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 cover each other, and the first portion 11 and the second portion 12 together define a receiving space for receiving the battery module 20. The second part 12 may be a hollow structure with one open end, the first part 11 may be a plate-shaped structure, and the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a containing space; the first portion 11 and the second portion 12 may be both hollow structures with one side open, and the open side of the first portion 11 may cover the open side of the second portion 12. Of course, the case 10 formed by the first and second portions 11 and 12 may have various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

In an embodiment, the first portion 11 is directly formed on the bottom plate of the vehicle 1000, and the battery module 20 is directly adhered to the bottom plate by a structural adhesive, so that the structural members of the battery 100 and the battery module 20 can be simplified, and the volumetric energy density of the battery 100 can be improved. At the same time, the height of battery 100 above vehicle 1000 is also increased.

The battery module 20 includes a plurality of battery cells 21, and the plurality of battery cells 21 are connected in series or in parallel or in series-parallel to form the battery module 20, where the series-parallel connection refers to both series connection and parallel connection among the plurality of battery cells 21.

The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for achieving electrical connection between the plurality of battery cells 21.

Wherein each battery cell 21 may be a secondary battery 100 or a primary battery 100; but is not limited to, the lithium sulfur battery 100, the sodium ion battery 100, or the magnesium ion battery 100. The battery cell 21 may be cylindrical, flat, rectangular parallelepiped, or other shape.

The battery cell 21 refers to the smallest unit constituting the battery 100. Cell 21 includes end caps, a housing, an electrical core assembly, and other functional components.

The end cap means a member that covers the opening of the case to insulate the internal environment of the battery cell 21 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. Optionally, 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 21 may have a higher structural strength and an improved safety performance. The end cap may be provided with functional components such as electrode terminals. The electrode terminals may be used to electrically connect with the electric core assembly for outputting or inputting electric power of the battery cells 21. Referring to fig. 3, fig. 3 is a partial structural view of the battery 100 shown in fig. 2. In some embodiments, a pressure relief mechanism 211 for relieving the internal pressure when the internal pressure or temperature of the battery cell 21 reaches a threshold value may be further disposed on the end cap. 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 21, wherein the formed internal environment may be used to house the cell assembly, electrolyte, and other components. The housing and the end cap may be separate components, and an opening may be provided in the housing, and the opening may be covered by the end cap to form the internal environment of the battery cell 21. 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 housing may be determined according to the specific shape and size of the electric core assembly. 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 cell assembly is the component of the cell 21 where the electrochemical reaction takes place. One or more electrical core assemblies may be contained within the housing. The cell assembly 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 parts of the positive plate and the negative plate with the active materials form the main body part of the electric core assembly, and the parts of the positive plate and the negative plate without the active materials form 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 at both ends of the main body portion, respectively. During the charge and discharge of the battery 100, the positive and negative active materials react with the electrolyte, and the tabs are connected to the electrode terminals to form a current loop.

With reference to fig. 2, the present application provides a battery 100, where the battery 100 includes a heat exchange assembly 30 and at least two sets of battery modules 20, the heat exchange assembly 30 includes at least two heat exchange plates 31, and the heat exchange assembly 30 is configured to exchange heat with all the battery modules 20. Wherein, every group battery module 20 constructs with every heat transfer board 31 and forms a heat transfer unit, and the heat transfer board 31 interval and the independent setting of at least two among all heat transfer units.

In fig. 2, the X direction is the longitudinal direction of the battery 100, the Y direction is the width direction of the battery 100, and the Z direction is the height direction of the battery 100.

The heat exchange assembly 30 is for containing a fluid to regulate the temperature of the battery cells 21. Here, the fluid may be a liquid or a gas, and adjusting the temperature of the battery cell 21 means heating the battery cell 21 or cooling the battery cell 21. During the heating or cooling of the battery cells 21, a fluid circulates in the heat exchange assembly 30 to perform heat transfer with the battery cells 21. In particular, the fluid may also be referred to as a heat exchange medium.

The heat exchange assembly 30 includes at least two heat exchange plates 31, the heat exchange plates 31 are used for accommodating the fluid to adjust the temperature of the battery cells 21, and specifically, the battery module 20 is disposed on the heat exchange plates 31. It will be appreciated that in other embodiments, the heat exchange assembly 30 comprises, in addition to the heat exchange plates 31, connecting pipes and joints connecting the connecting pipes with the heat exchange plates 31, thereby facilitating fluid flow through the connecting pipes into the heat exchange plates 31 or out of the heat exchange plates 31.

In the case of cooling or temperature reduction of the battery cells 21, the heat exchange plate 31 serves to receive a cooling fluid to reduce the temperature of the battery cells 21. At this time, the heat exchange plate 31 may be referred to as a cooling plate, and the fluid contained therein may be referred to as a cooling medium or a cooling fluid. And more particularly may be referred to as a cooling fluid or a cooling gas.

The battery module 20 may have a cylindrical shape, a flat body, a rectangular parallelepiped shape, or other shapes. The heat exchange plate 31 may be in the shape of a rectangular parallelepiped plate, a flat body, or other shapes. The orthographic projection of the battery module 20 on the plane where the corresponding heat exchange plate 31 is located in the range contained by the heat exchange plate 31, so that all parts of the surface, facing the heat exchange plate 31, of the battery module 20 are in contact with the heat exchange plate 31 for heat exchange, and the heat exchange effect can be improved.

A heat exchange unit is formed by constructing each group of corresponding battery modules 20 and each heat exchange plate 31 together, that is, a group of battery modules 20 is arranged on one heat exchange plate 31, the heat exchange plate 31 is located between the battery module 20 and the second portion 12 of the box body 10, and the heat exchange plate 31 and the battery module 20 located thereon form a heat exchange unit together. Thus, the number of heat exchange units is equal to the number of battery modules 20 and heat exchange plates 31.

Specifically, the battery 100 is provided with a row of heat exchange units in the width direction thereof, the row of heat exchange units including a plurality in the length direction. In other embodiments, the battery 100 may be provided with a plurality of rows of heat exchange units in the width direction, and each row of heat exchange units includes a plurality of heat exchange units in the length direction, which is not limited herein.

The two heat exchange plates 31 are spaced and independently arranged, which means that: a certain gap is maintained between the two heat exchange plates 31, and the two each perform its own heat exchange function without heat exchange.

Through setting up heat exchange plate 31 interval and independent setting between them at least in whole heat transfer unit, when battery 100 out of control for in two sets of battery module 20 that two heat exchange plate 31 that two intervals and independent setting correspond, can not connect through these two heat exchange plate 31 electricity, for the condition that all battery module 20 adopted integrative heat exchange plate 31 that sets up among the prior art, the probability that the arc discharge phenomenon takes place has been lacked, has reduced the potential safety hazard.

According to some embodiments of the present application, optionally, the battery 100 further includes a first insulating member (not shown in the figures), and the first insulating member is disposed between the two heat exchange plates 31 disposed at a distance from each other.

The first insulating part is a part with insulating property, namely the insulating part is not conductive, and the better the insulating property is, the less easy the electric leakage is caused.

In this embodiment, the first insulating member is in the shape of a strip. The first insulating part is filled between the two heat exchange plates 31 arranged at intervals, so that the first insulating part can block high voltage under the condition that the two heat exchange plates 31 arranged at intervals are not electrically conducted, the gap between the two heat exchange plates 31 is filled, and the integral structural strength of the battery 100 is improved.

According to some embodiments of the application, optionally, the first insulator is a rubber.

The first insulating part is made of rubber, the rubber is a high-elasticity polymer material with reversible deformation, the first insulating part is rich in elasticity at room temperature, can generate large deformation under the action of small external force, and can recover the original shape after the external force is removed. The rubber has good insulativity and wear resistance.

The first insulating member is provided as a rubber member, so that the strength of the battery 100 is high on the premise of ensuring good insulation.

It is contemplated that in other embodiments, the first insulating member may be made of other insulating materials, such as plastic, and is not limited herein.

Referring to fig. 4, fig. 4 is a partial structural view of the battery 100 shown in fig. 2. According to some embodiments of the present application, optionally, the heat exchange plates 31 of each adjacent two heat exchange units are spaced and independently disposed.

Like this, the equal interval of heat transfer plate 31 of whole heat transfer unit and independent setting, and because the correspondence is equipped with a battery module 20 on every heat transfer plate 31, then all there is not the relation of connection between the heat transfer plate 31 that every battery module 20 corresponds, a battery module 20 and an independent heat transfer plate 31 heat transfer promptly, when battery monomer 21 of any battery module 20 breaks down, can not be through the heat transfer plate 31 rather than the heat transfer with locate battery module 20 electricity on other heat transfer plate 31 and be connected, the arc discharge phenomenon has obtained very big improvement, the potential safety hazard has greatly been reduced.

It should be understood that in other embodiments, the heat exchange plates 31 of each two adjacent heat exchange units are not arranged at intervals and independently, allowing the heat exchange plates 31 of some heat exchange units to be arranged integrally with the other heat exchange plates 31. That is, although two battery modules 20 are defined to correspond to two heat exchange plates 31, when the two heat exchange plates 31 are integrally connected, the two heat exchange plates 31 are not clearly defined in appearance.

Referring to fig. 5, fig. 5 is a structural view of a heat exchange plate of the battery 100 shown in fig. 2. According to some embodiments of the present application, optionally, a pressure relief mechanism 211 is disposed on a surface of the heat exchange plate 31, where the battery cell 21 in each group of battery modules 20 faces itself, and an avoiding hole 311 for avoiding the pressure relief mechanism 211 is disposed on the heat exchange plate 31.

The avoiding hole 311 is disposed on the heat exchange plate 31 and used for avoiding the pressure relief mechanism 211. When the pressure relief mechanism 211 needs to be opened, the relief hole 311 does not prevent the normal opening.

When the internal pressure or temperature of the battery cell 21 reaches a threshold value, the pressure relief mechanism 211 can relieve the pressure inside the battery cell 21. When the single battery 21 needs to be decompressed, the avoiding hole 311 can avoid the decompression mechanism 211, so that the interference of the heat exchange plate 31 on the opening of the decompression mechanism 211 is avoided.

With continued reference to fig. 5, according to some embodiments of the present application, optionally, the battery 100 further includes a first spill prevention member 40, and the first spill prevention member 40 is fittingly disposed between the battery module 20 and the heat exchange plate 31 in at least one heat exchange unit. The first overflow preventing member 40 is located at least one side of the outer circumference of the escape hole 311.

The battery module 20 and the heat exchange plate 31 are bonded and fixed through the structural adhesive, after the adhesive is coated between the battery module 20 and the heat exchange plate 31, the adhesive is pressed through the pressurizing mechanism, in the pressing process of the battery module 20 and the heat exchange plate 31, the adhesive easily enters the avoiding hole 311 and blocks the avoiding hole 311, and when the avoiding hole 311 is blocked, the normal opening of the pressure relief mechanism 211 is interfered.

The first overflow preventing member 40 is a member for preventing the glue from overflowing from between the battery module 20 and the heat exchange plate 31 to the inside of the avoiding hole 311.

By arranging the first anti-overflow member 40 on at least one side of the periphery of the avoiding hole 311, the glue can be prevented from overflowing from between the battery module 20 and the heat exchange plate 31 to the avoiding hole 311 to block the avoiding hole 311 in the pressurizing process, so that the normal opening of the pressure relief mechanism 211 is ensured.

Since each group of battery modules 20 is fixed to the corresponding heat exchange plate 31 by gluing, the glue blocking avoiding hole 311 may occur for any one heat exchange plate 31. Specifically, the first anti-overflow member 40 is disposed between the heat exchange module in each heat exchange unit and the heat exchange plate 31, so that the normal operation of each battery cell 21 is ensured, and the performance stability of the whole battery 100 is ensured.

According to some embodiments of the present application, optionally, the first spill guard 40 is a spill guard strip. On the one hand, the adhesive tape is softer, and in the pressurization process, certain deformation can be produced to softer adhesive tape, does benefit to battery module 20 and heat transfer board 31's bonding. On the other hand, the strip-shaped first spill prevention member 40 can simultaneously block the glue from flowing into the plurality of avoiding holes 311, that is, one first spill prevention member 40 can protect the plurality of avoiding holes 311.

In one embodiment, the plurality of avoiding holes 311 of each heat exchange plate 31 are sequentially arranged along the width direction thereof, and the first spill prevention members 40 are disposed on both sides of the avoiding holes 311 in the length direction, so that the avoiding holes 311 are well protected.

With continued reference to fig. 3, according to some embodiments of the present disclosure, optionally, at least one set of battery modules 20 further includes a support 212, and the support 212 is disposed between at least two battery cells 21 in the current battery module 20.

The support 212 is a member that plays a supporting role. By disposing the supporting member 212 between at least two battery cells 21 of the battery module 20, the lateral strength of the battery module 20 is greatly improved, and the structural strength of the battery 100 is improved.

Generally, the large faces of the battery cells 21 of the battery module 20 are adjacent, and the support member 212 is supported between the large faces of the battery cells 21. Specifically, the support member 212 is disposed between the large faces of each two adjacent battery cells 21 of each battery module 20, so that the lateral strength of the battery module 20 is further improved, and the structural strength of the battery 100 is further improved.

According to some embodiments of the present application, optionally, the support 212 is an adhesive. The adhesive member can support the single battery 21 and also can bond the single battery 21, so that the strength of the battery module 20 is further improved.

Specifically, the gap between the large faces of the battery cells 21 is 0.03mm to 0.06mm, and the thickness of the adhesive member is 0.08mm to 0.11mm, that is, the thickness of the adhesive member is greater than the gap, so as to ensure that the gap between the large faces is filled with the adhesive member, and the structural strength is high.

Referring to fig. 6 and 7, fig. 6 isbase:Sub>A view showing still another layout structure of the battery 100 shown in fig. 2, and fig. 7 isbase:Sub>A schematic sectional view of thebase:Sub>A-base:Sub>A plane of the structure shown in fig. 6.

According to some embodiments of the present application, optionally, the battery 100 further includes a second overflow prevention member 50, and the second overflow prevention member 50 is disposed at one side of the end of at least one group of the battery modules 20 adjacent to the heat exchange plate 31, and is used for shielding a gap between the battery cells 21 included in the battery modules 20.

The second overflow preventing member 50 can shield the gap of the battery cells 21 included in the battery module 20, thereby preventing the paste from overflowing from the gap of the battery cells 21 to the side of the battery cells 21.

The side of the end surface of the battery module 20 close to the heat exchange plate 31 means: when each battery module 20 includes a plurality of battery cells 21 arranged in sequence in the width direction, the end surface is the surface of the battery module 20 in the length direction, and the side of the end surface close to the heat exchange plate 31 is the bottom side of the end surface.

By providing the second overflow preventing member 50, the glue can be prevented from overflowing from the R corner of the bottom of the battery cell 21 to the side of the battery cell 21, thereby facilitating assembly of other structures (such as the separator 70, described below).

According to some embodiments of the present application, optionally, the second spill guard 50 is a foam strip. The sealing performance of the foam rubber is good, the extending length of the strip-shaped second anti-overflow piece 50 can cover the gap between the battery monomers 21 included in the battery module 20, and the anti-overflow effect is good.

According to some embodiments of the present application, optionally, two battery modules 20 are defined as a pair group; the battery 100 further includes a third non-overflow element 60 having an insulating property, one end of the third non-overflow element 60 is disposed between one battery module 20 in the pair and the corresponding heat exchange plate 31, and the other end of the third non-overflow element 60 is disposed between the other battery module 20 in the pair and the corresponding heat exchange plate 31, so as to shield a gap between the battery cells 21 included in the battery module 20.

The third anti-overflow piece 60 can shield the clearance between the battery cells 21 that battery module 20 includes, and simultaneously, the third anti-overflow piece 60 has insulating properties, and when its both ends overlap joint was gone up on the heat transfer plate 31 that two intervals set up like this, heat transfer plate 31 can not realize electric connection through blue membrane.

Through setting up third anti-overflow spare 60, can shield the clearance between the battery monomer 21 that battery module 20 includes, can prevent to glue from overflowing to the side of battery monomer 21 from the R angle of battery monomer 21 bottom to make things convenient for the assembly of other structures (such as baffle 70, the following).

Specifically, the third overflow preventing member 60 is a blue film having a width in the length direction of 4mm to 5mm. It is understood that in other embodiments, the third overflow prevention member 60 may be made of other materials.

According to some embodiments of the present application, optionally, a separator 70 is disposed between the battery modules 20 included in each row, and the separator 70 is made of a plastic insulating material and can function to insulate the adjacent battery modules 20. Meanwhile, the battery 100 further includes two end plates 80 and two side plates 90, the two end plates 80 are respectively located at two ends of the battery 100 in the length direction, each end plate 80 is abutted between the battery module 20 and the box body 10, the two side plates 90 are respectively located at two ends of the battery 100 in the width direction, and each side plate 90 is abutted between the battery module 20 and the box body 10. And the end plate 80 and the side plate 90 are fixed by welding, riveting or bolt connection. Thus, the structure of the battery 100 is made compact, and the structural strength and rigidity are high.

According to some embodiments of the present application, there is also provided an electric device including the battery 100 according to the above aspect.

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 (13)

1. A battery, comprising:

at least two groups of battery modules; and

the heat exchange assembly comprises at least two heat exchange plates and is used for exchanging heat with all the battery modules;

each group of battery module corresponds to each heat exchange plate and is constructed together to form a heat exchange unit, and at least two heat exchange plates in all the heat exchange units are arranged at intervals and independently.

2. The battery of claim 1, further comprising a first insulator disposed between two of the heat exchange plates spaced apart from each other.

3. The battery of claim 2, wherein the first insulator is a rubber.

4. The battery of claim 1, wherein the heat exchange plates of every two adjacent heat exchange units are spaced and independently arranged.

5. The battery according to claim 1, wherein a pressure relief mechanism is arranged on the surface of the heat exchange plate where the battery monomer faces the heat exchange plate in each group of the battery modules, and an avoiding hole for avoiding the pressure relief mechanism is formed in the heat exchange plate.

6. The battery according to claim 5, further comprising a first overflow prevention member, wherein the first overflow prevention member is attached to the at least one heat exchange unit between the battery module and the heat exchange plate;

wherein, first anti-overflow spare is located dodge at least one side of hole periphery.

7. The battery of claim 6 wherein the first spill guard is a spill guard strip.

8. The battery of claim 1, wherein at least one group of the battery modules further comprises a support member disposed between at least two cells of the currently located battery module.

9. The battery of claim 8, wherein the support member is an adhesive.

10. The battery according to claim 1, further comprising a second overflow preventing member disposed on a side of an end surface of at least one group of the battery modules, which is close to the heat exchange plate, for shielding a gap between the battery cells included in the battery modules.

11. The battery of claim 10 wherein the second spill guard is a foam strip.

12. The battery of claim 1, wherein two of the battery modules are defined as a pair of groups;

the battery also comprises a third anti-overflow piece which is insulating, one end of the third anti-overflow piece is arranged between one group of battery modules in the matching group and the corresponding heat exchange plate, and the other end of the third anti-overflow piece is arranged between the other group of battery modules in the matching group and the corresponding heat exchange plate so as to shield the gaps between the battery monomers included in the battery modules.

13. An electrical device comprising a battery according to any of claims 1-12.

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