CN218827417U - Heat exchange assembly, battery pack and vehicle - Google Patents

Abstract

The utility model discloses a heat exchange assembly, battery package and vehicle, heat exchange assembly is applied to the battery, the battery includes at least a set of battery module; the heat exchange assembly comprises: the heat exchange piece is suitable for exchanging heat with the battery module; the energy storage piece is established one side that deviates from of heat transfer piece the battery module, the energy storage piece includes holding piece and phase change material spare, the holding piece is located the heat transfer piece, the phase change material spare fill in the holding piece, the phase change material spare corresponds the electrode terminal sets up. From this, through linking to each other heat exchange piece and battery module for heat transfer medium directly can carry out the heat transfer to the battery module, improves the heat transfer effect of heat exchange piece to the battery module, reduces the difference in temperature of battery module, and phase change material spare can play buffer temperature's effect in the battery package, prevents that the battery package from rising temperature too fast, with control battery module temperature under the condition of the high-power charge-discharge of battery module.

Description

Heat exchange assembly, battery pack and vehicle

Technical Field

The utility model belongs to the technical field of the battery technique and specifically relates to a heat exchange assemblies, battery package and vehicle are related to.

Background

With the gradual use of the direct cooling technology in the field of new energy batteries, in the battery cooling scheme of the related art, the contact between a refrigerant and the battery is uneven, and the cooling effect of the battery is poor and the temperature difference is large due to the limited heat absorption capacity of a liquid cooling plate or a direct cooling plate, so that the requirements of temperature equalization and heat preservation of the battery cannot be met, and the charging power of the battery is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a heat exchange assemblies, heat exchange assemblies's heat transfer ability is strong, can be at the temperature of the high-power charge-discharge condition of battery package under control battery package.

According to the embodiment of the utility model, the heat exchange assembly is applied to a battery, the battery comprises at least one group of battery modules, each group of battery modules comprises a plurality of battery monomers, and each battery monomer is provided with an electrode terminal; the heat exchange assembly comprises: the heat exchange piece is suitable for exchanging heat with the battery module; the energy storage piece is established deviating from of heat transfer piece one side of battery module, the energy storage piece includes holding piece and phase change material piece, the holding piece is located the heat transfer piece, the phase change material piece fill in the holding piece, the phase change material piece corresponds the electrode terminal sets up.

According to the utility model discloses a heat exchange assembly, through linking to each other heat exchange piece and battery module, holding piece sets up the one side that deviates from the battery module at heat exchange piece, make heat transfer medium directly can cool off or heat the battery module, promote the heat transfer ability of heat exchange piece, improve the heat transfer effect of heat exchange piece to the battery module, reduce the difference in temperature of battery module, and simultaneously, phase change material piece can also play buffer temperature's effect in the battery package, prevent that the battery package from rising up too fast, so that heat exchange assembly can control battery module temperature under the condition of the high-power charge-discharge of battery package.

According to some embodiments of the present invention, the battery comprises at least one battery module, and the electrode terminals are disposed at two ends of the battery cell; the accommodating pieces are multiple, each accommodating piece corresponds to the electrode terminal in each group of battery modules, and each accommodating piece is filled with the phase-change material piece.

According to the utility model discloses heat exchange assemblies, the battery includes two sets ofly battery module, two sets of battery module intervals set up, at least one the holding piece corresponds two sets ofly electrode terminal sets up among the battery module.

According to the utility model discloses heat transfer assembly of some embodiments, the holding with heat transfer member is integrated into one piece.

According to the utility model discloses heat exchange assemblies of some embodiments, the holding piece is a plurality of, every the holding piece all corresponds electrode terminals sets up, every all the packing has in the holding piece phase change material spare.

According to the utility model discloses heat transfer assembly of some embodiments, the holding with heat transfer spare is components of a whole that can function independently processing formed part, the holding paste extremely on the heat transfer spare.

According to the utility model discloses heat exchange assemblies of some embodiments, the holding piece is aerogel spare.

According to the utility model discloses heat exchange assembly of some embodiments, the holding piece is equipped with a plurality of chambeies that hold, with electrode terminal corresponds it has to hold the intracavity packing phase change material spare, the holding piece covers the side of heat exchange piece, with electrode terminal dislocation set it has gas to hold the chamber packing.

According to the utility model discloses some embodiments's heat exchange assemblies, arbitrary adjacent hold a lateral wall of chamber sharing in order to inject honeycomb.

According to the utility model discloses a battery pack, including foretell heat exchange assemblies. Because the battery package is provided with above-mentioned heat exchange assembly, heat exchange assembly includes heat transfer spare and energy storage spare, and the heat transfer spare can be directly to battery module cooling and heating, improves the heat transfer effect of heat transfer spare to the battery module, is provided with phase change material spare in the energy storage spare, and phase change material spare can play buffering and heat retaining effect, consequently can guarantee the stability of battery package temperature under the condition of high-power charge-discharge.

According to the utility model discloses battery package, battery package still includes: a housing; the battery module is positioned in the shell; the heat exchange assembly is arranged between the chassis of the shell and the battery module.

According to some embodiments of the battery pack of the present invention, the battery pack further comprises a temperature-equalizing plate, a heat pipe is disposed in the temperature-equalizing plate, and the temperature-equalizing plate is disposed between the heat exchange member and the battery module; or the temperature equalizing plate and the heat exchange assembly are positioned on two sides of the battery module.

According to the utility model discloses a vehicle, including foretell battery package. Because the vehicle is provided with above-mentioned battery package, the battery package is provided with heat transfer spare and energy storage spare to the heat transfer spare can be directly to battery module cooling and heating, improves the heat transfer effect of heat transfer spare to the battery module, is provided with phase change material spare in the energy storage spare, and phase change material spare can play buffering and heat retaining effect, prevents that the battery package from rising temperature too fast, in order to improve the duration of vehicle battery package.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a battery pack according to an embodiment of the present invention;

fig. 2 is an assembly schematic diagram of a battery module and a heat exchange assembly according to an embodiment of the present invention;

fig. 3 is an assembly schematic view of a heat exchange assembly and a chassis according to an embodiment of the present invention;

FIG. 4 isbase:Sub>A cross-sectional view of FIG. 3 at A-A;

fig. 5 is a schematic structural diagram of a battery pack according to another embodiment of the present invention;

fig. 6 is a schematic structural view of a receiving member according to another embodiment of the present invention.

Reference numerals are as follows:

battery pack 100, battery module 110, electrode terminals 111,

The heat exchange component 120, the heat exchange member 121, the circulation channel 1211, the energy storage member 122, the accommodating member 1221, the phase change material member 1222, the heat storage member 122, the accommodating member 1221, the heat exchange member,

The heat-conducting plate comprises a containing cavity 131, a temperature equalizing plate 140, a bottom plate 150, a sealing cover 160, a tray 170 and a heat-conducting structural adhesive layer 180.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like refer to orientations or positional relationships based on those shown in the drawings, and are used only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

A heat exchange assembly 120 according to an embodiment of the present invention is described below with reference to fig. 1-6.

According to the utility model discloses a heat exchange assembly 120, heat exchange assembly 120 is applied to the battery, the battery includes at least a set of battery module 110, every group battery module 110 includes a plurality of battery monomer, every battery monomer is equipped with electrode terminal 111, heat exchange assembly 120 includes heat transfer 121 and energy storage 122, heat transfer 121 is suitable for with battery module 110 heat exchange, energy storage 122 sets up the one side that deviates from battery module 110 at heat transfer 121, energy storage 122 includes holding piece 1221 and phase change material spare 1222, holding piece 1221 sets up on heat transfer 121, phase change material spare 1222 is filled in holding piece 1221, phase change material spare 1222 corresponds electrode terminal 111 and sets up.

Specifically, as shown in fig. 1 or fig. 5, the heat exchanging member 121 is connected to the battery module 110, the accommodating member 1221 is used for filling the phase change material 1222, the accommodating member 1221 is disposed on a side of the heat exchanging member 121 away from the battery module 110, so as to space the phase change material 1222 from the battery module 110, and a circulation channel 1211 for circulating a heat exchange medium is disposed in the heat exchanging member 121, so that the heat exchange medium can circulate in the heat exchanging member 121, thereby cooling or heating the battery module 110, improving a heat exchange effect of the heat exchanging member 121 on the battery module 110, and reducing a temperature difference of the battery module 110.

Further, a plurality of single batteries are uniformly arranged to form the battery module 110, the end of each single battery is provided with the electrode terminal 111, and when the battery pack 100 is charged and discharged, the heat generated at the position of the electrode terminal 111 is higher than that generated at the middle position of each single battery, which results in a large temperature difference between the single batteries. The phase change material 1222 has a characteristic of absorbing heat and keeping its temperature unchanged, as shown in fig. 2, the phase change material 1222 is disposed corresponding to the electrode terminal 111 of the battery cell to absorb energy generated at the electrode terminal 111, so that the temperature at the electrode terminal 111 can be kept at a phase change temperature point for a short time, thereby playing a role of thermal buffering, and preventing the temperature difference of the battery module 110 caused by too fast temperature rise at the electrode terminal 111 from being large, so that the phase change material 1222 can absorb heat in the battery pack 100, and can maintain the temperature of the battery pack 100 for a short time, thereby preventing the battery pack 100 from being heated too fast to cause a fault, the heat exchange member 121 is connected to the battery module 110, and the energy storage member 122 is further provided with the phase change material 1222, so that the heat exchange member 121 can control the temperature of the battery module 110 under the condition of high-power charge and discharge of the battery module 110.

In addition, the phase change material 1222 preferably has a phase change point in the range of 40 ℃ to 60 ℃, and specifically, a material with high latent heat such as paraffin, red phosphorus or silica can be used, and the paraffin may be added with a relevant flame retardant due to its combustion-supporting property.

Alternatively, the material of the phase-change material 1222 may be selected from expanded graphite, which is a graphite material having a micro-pore structure, as a matrix, the pore structure inside the expanded graphite may be filled with the industrial paraffin, and the capillary tension of the pore structure may be used to adsorb the industrial paraffin in a molten state, so as to prevent the industrial paraffin in the molten state from leaking. It is understood that the phase change material 1222 may be selected from other materials as long as the phase change reaction occurs when the phase change temperature point is reached.

In the present battery pack cooling scheme, the phase change material 1222 is disposed between the direct cooling plate and the battery module 110, so that the direct cooling plate needs to indirectly cool the battery module 110 through the phase change material 1222, and the direct cooling plate has poor cooling effect on the battery module. The phase change material 1222 has poor thermal conductivity, so that the temperature of the battery module 110 cannot be controlled by the conventional battery pack cooling scheme under the condition of high-power charging and discharging of the battery module 110, resulting in a large temperature difference of the battery module 110.

According to the utility model discloses a heat exchange assembly 120, through linking to each other heat exchange member 121 with battery module 110, make heat transfer medium directly can cool off or heat battery module 110, promote heat exchange member 121's heat transfer ability, improve heat exchange member 121 to battery module 110's heat transfer effect, reduce battery module 110's the difference in temperature, and simultaneously, phase change material 1222 can also play the cushioning effect in battery package 100, prevent that battery package 100 from rising up too fast, so that heat exchange assembly 120 can control battery module 110 temperature under the condition of the high-power charge-discharge of battery module 110.

In some embodiments of the present invention, the battery includes at least one set of battery modules 110, the electrode terminals 111 are disposed at two ends of the battery cells, the accommodating members 1221 are plural, each accommodating member 1221 corresponds to the electrode terminals 111 disposed in each set of battery modules 110, and each accommodating member 1221 is filled with the phase-change material 1222.

Specifically, the phase change material pieces 1222 are filled in the plurality of accommodating pieces 1221, and each accommodating piece 1221 is disposed corresponding to the electrode terminal 111 of the battery module 110, so that the phase change material pieces 1222 can be disposed in one-to-one correspondence with the electrode terminal 111, so that the phase change material pieces 1222 can absorb heat generated at the electrode terminal 111, the temperature at the electrode terminal 111 can be kept at a phase change temperature point for a short time, a thermal buffering effect is achieved, and a temperature difference of the battery module 110 caused by too fast temperature rise at the electrode terminal 111 is prevented from being large.

In some embodiments of the present invention, the battery includes two sets of battery modules 110, the two sets of battery modules 110 are spaced apart from each other, and the at least one accommodating member 1221 is disposed corresponding to the electrode terminals 111 of the two sets of battery modules 110.

Specifically, the battery may be provided with two sets of battery modules 110, the two sets of battery modules 110 are spaced apart in the vertical direction of fig. 5, the accommodating member 1221 may be interposed between the two sets of battery modules 110, and the accommodating member 1221 may be disposed corresponding to the electrode terminals 111 of the two sets of battery modules 110, so that the phase change material 1222 may be disposed corresponding to the electrode terminals 111, and the phase change material 1222 may absorb energy generated at the electrode terminals 111, so that the temperature at the electrode terminals 111 may be maintained at a phase change temperature point for a short time, to perform a thermal buffering function.

In some embodiments of the present invention, the accommodating member 1221 and the heat exchanging member 121 are integrally formed, and the accommodating member 1221 is plural, the accommodating members 1221 are arranged at intervals, and each accommodating member 1221 is filled with the phase-change material 1222, and each accommodating member 1221 is arranged corresponding to the electrode terminal 111 of the battery module 110.

Specifically, referring to fig. 2 and 3, when the battery module 110 is charged and discharged, a large amount of heat is generated at the electrode terminals 111 of the battery module 110, so that a high-temperature region is formed on the battery module 110, resulting in a large temperature difference of the battery module 110. The size of the receiving pieces 1221 may be adapted to the size of the electrode terminals 111 of the battery module 110, and each receiving piece 1221 is disposed in one-to-one correspondence with the electrode terminals 111 of the battery module 110, so that the phase change material 1222 may play a role of thermal buffering in a high-temperature region of the battery module 110, so as to effectively control the temperature of the high-temperature region of the battery module 110.

In addition, the phase change material 1222 is dense and expensive, and the use of a large amount of phase change material 1222 tends to result in low energy density and high production cost after the battery pack 100 is assembled. To above-mentioned battery module 110's temperature distribution characteristics, the utility model discloses only set up phase change material spare 1222 in battery module 110's high temperature region department, can guarantee battery package 100's energy density when reducing battery module 110's the difference in temperature to can save battery package 100's manufacturing cost.

Further, the receiving member 1221 is integrally formed with the heat exchanging member 121 to facilitate installation of the heat exchanging assembly 120. And heat exchange assembly 120 can be constructed as metal, and the metal cavity can encapsulate phase change material 1222 in holding the chamber 131 to effectively solve phase change material 1222 and change the liquid phase into by the solid phase after the heat absorption and lead to the problem that phase change material 1222 reveals.

In other examples of the present invention, the heat exchanging member 121 and the accommodating member 1221 are separated from each other, and the accommodating member 1221 is adhered to the heat exchanging member 121.

Specifically, heat exchanger 121 and holding piece 1221 can independent construction respectively, and holding piece 1221 can link to each other with heat exchanger 121 through modes such as gluing, so set up the mounted position that can adjust holding piece 1221 in a flexible way according to the condition of generating heat of battery module 110 for heat exchange assembly 120 can with the adaptation of different battery modules 110.

In some embodiments of the present invention, the housing 1221 is an aerogel.

Specifically, the aerogel may be only disposed at a high-temperature region of the heat exchange member 121 corresponding to the battery module 110, and in addition, the aerogel may also be configured to have a size adapted to that of the heat exchange member 121 or the battery module 110, and the rest positions of the aerogel may also be provided with the accommodating cavity 131, and the phase-change material 1222 may be arbitrarily filled into the accommodating cavity 131, so that the phase-change material 1222 may be disposed corresponding to any high-temperature position of the battery module 110, so as to improve the heat absorption capability of the energy storage member 122, and ensure that the temperatures of the battery modules 110 are consistent.

Aerogel spare has the heat preservation function to keep warm to battery module 110, aerogel spare compares in conventional insulation material simultaneously, and its tensile strength and compressive strength are higher, can play the effect of supporting battery module 110. Under the condition that the heat preservation degree is the same, the aerogel spare size is thin, and compact structure regards aerogel spare as holding piece 1221 can make the compact structure of battery package 100, reduces the occupation space of battery package 100. Aerogel spare still has and inhales the sound characteristic, can absorb the noise that comes into from the car outward, promotes passenger's the experience of taking and feels.

The energy storage element 122 with the above structure can be adapted to the battery module 110 with other heating characteristics, and the structure can also reduce the amount of the phase-change material 1222 in the battery pack 100, so as to reduce the volume occupied by the phase-change material 1222 in the battery pack 100, and prevent the low energy density of the battery pack 100 caused by the large amount of the phase-change material 1222.

Meanwhile, the aerogel part has hydrophobicity and high temperature resistance, and when the aerogel part is in a high-temperature and high-humidity environment, the accommodating cavity 131 still has strong sealing performance and heat insulation performance, so that external water vapor can be prevented from entering the accommodating cavity 131 to influence the heat insulation function of the aerogel part.

Further, the phase change material member 1222 may absorb heat generated from the battery module 110, thereby reducing the temperature difference of the battery module 110. Therefore, when the accommodating member 1221 is configured as an aerogel member, the energy storage member 122 has the functions of uniform temperature and heat preservation, so that the energy storage member 122 has a higher integration level and more complete functions.

The utility model discloses a further embodiment, as shown in fig. 5, be provided with heat transfer piece 121 between aerogel spare and the battery module 110 to one side that battery module 110 deviates from aerogel spare also can be provided with heat transfer piece 121, so set up the heat transfer ability that can improve battery package 100, guarantee battery package 100's temperature uniformity.

It should be noted that the aerogel member, the heat exchanging member 121 and the battery module 110 may also be bonded by the heat conducting adhesive layer 180, and the heat conducting adhesive layer 180 may perform the functions of mechanical connection and heat conduction, so as to improve the heat exchanging efficiency of the battery pack 100.

In some embodiments of the present invention, the accommodating member 1221 is provided with a plurality of accommodating cavities 131, the accommodating cavity 131 corresponding to the electrode terminal 111 is filled with the phase-change material 1222, the accommodating member 1221 covers the side surface of the heat exchange member 121, and the accommodating cavity 131 arranged in a staggered manner with the electrode terminal 111 is filled with gas.

Specifically, referring to fig. 4 to 6, the phase change material 1222 is filled in the receiving cavity 131 opposite to the electrode terminal 111, a wall of the receiving cavity 131 may conduct heat, and the phase change material 1222 is in contact with the wall of the receiving cavity 131 to function to absorb heat generated from the electrode terminal 111. The accommodating part 1221 is provided with the accommodating cavities 131, so that the heat conducting area of the accommodating part 1221 can be increased, the heat conducting effect of the accommodating part 1221 is improved, and when the phase-change material 1222 is filled in the accommodating cavities 131, the contact area between the phase-change material 1222 and the accommodating part 1221 is increased, the heat absorbing area of the phase-change material 1222 is increased, so that the heat absorbing speed of the phase-change material 1222 is increased, and the problem that the phase-change material 1222 absorbs heat slowly is solved.

Further, when the accommodating chamber 131 is a closed space, the accommodating chamber 131 can also enclose gas in the cavity, so that the battery pack 100 can still have a heat preservation function even under a high-speed vibration condition.

With further reference to fig. 5 and 6, the accommodating member 1221 covers the side surface of the heat exchanging member 121 to wrap the phase change material 1222, the remaining portion of the battery module 110 generates less heat relative to the electrode terminal 111, and the accommodating cavity 131, which is disposed in a staggered manner with respect to the electrode terminal 111, is filled with gas, so that the temperature uniformity of the battery module 110 can be ensured.

In some embodiments of the present invention, any adjacent receiving cavities 131 share a sidewall to define a honeycomb structure.

Specifically, in conjunction with fig. 4 and 6, the receiving cavity 131 may be configured in a hexagonal structure to increase the area of the sidewall of the receiving cavity 131, thereby increasing the heat absorbing area of the phase change material 1222. The plurality of receiving cavities 131 are adjacently disposed and share a sidewall to define a honeycomb structure, which can ensure the structural strength of the receiving member 1221 when the phase change material 1222 is phase-changed.

In the utility model discloses a further embodiment, as shown in fig. 6, aerogel spare overall construction is honeycomb, and this kind of structural setting can reduce the use cost of aerogel to make aerogel spare's pliability better, when battery package 100 received outside mechanical shock, aerogel spare can play the cushioning effect inside battery package 100, protects battery package 100's inner structure.

According to the present invention, the battery pack 100 comprises the heat exchange assembly 120.

Through linking to each other heat exchange member 121 and battery module 110, make heat exchange medium directly can cool off or heat battery module 110, promote heat exchange member 121's heat transfer ability, improve heat exchange member 121 to battery module 110's heat transfer effect, reduce battery module 110's the difference in temperature, simultaneously, phase change material 1222 can also play the cushioning effect in battery package 100, prevent that battery package 100 from rising temperature too fast, so that heat exchange assembly 120 can control battery package 100's temperature under the condition of the high-power charge-discharge of battery package 100.

In some embodiments of the present invention, the battery pack 100 further comprises: the battery module 110 is arranged in the shell, and the heat exchange assembly 120 is arranged between the chassis 150 of the shell and the battery module 110.

Specifically, combine fig. 1 and fig. 3, heat exchange assembly 120 sets up between chassis 150 and battery module 110, and heat exchange member 121 links to each other with battery module 110, energy storage 122 sets up the one side that deviates from battery module 110 at heat exchange member 121, that is to say, energy storage 122 sets up between heat exchange member 121 and chassis 150, set up chassis 150 and heat exchange member 121 interval, prevent directly carrying out the heat exchange between chassis 150 and the heat exchange member 121, the heat conductivity of air is poor simultaneously, thereby reduce chassis 150 and the ability that heat exchange member 121 carries out the heat exchange, reduce the energy loss of heat exchange member 121, promote the heat transfer effect of heat exchange member 121 to battery module 110. In addition, the aerogel member may be in close contact with the chassis 150, and since the aerogel member has good flexibility, the aerogel member may absorb mechanical impact outside the battery pack 100 to further protect the battery pack 100.

At present, the direct cooling plate or the liquid cooling plate of the battery module 110 is usually directly assembled on the chassis 150, so that when the heat exchanging member 121 exchanges heat with the battery module 110, the chassis 150 exchanges heat with the heat exchanging member 121 at the same time, the energy of the heat exchanging member 121 is consumed, and the heat exchanging effect of the heat exchanging member 121 on the battery module 110 is affected.

The utility model discloses a set up chassis 150 and heat transfer 121 interval to weaken the heat transfer ability between chassis 150 and the heat transfer 121, reduce the energy loss of heat transfer 121.

Optionally, the aerogel component may also be disposed on a side of the battery module 110 away from the chassis 150, and the arrangement is the same as the technical effect achieved by the above structure arrangement, which is not repeated herein. In addition, the aerogel component can also be arranged on both sides of the battery module 110, so as to further improve the heat exchange capability of the battery pack 100.

As shown in fig. 1, in a further embodiment of the present invention, the battery pack 100 further includes a temperature-uniforming plate 140, a heat pipe is disposed in the temperature-uniforming plate 140, the temperature-uniforming plate 140 is disposed between the heat exchange member 121 and the battery module 110, or the temperature-uniforming plate 140 and the heat exchange assembly 120 are disposed on two sides of the battery module 110. Specifically, the heat pipe is internally provided with a working medium, and when the working medium in the heat pipe circularly flows, the working medium can bring the heat at the higher-temperature area in the single battery to the lower-temperature area in the single battery so as to realize uniform temperature of the plurality of single batteries.

Specifically, the temperature-uniforming plate 140 is used for heat exchange with the battery module 110, wherein the temperature-uniforming plate 140 may be made of a material with good thermal conductivity and low density, such as an aluminum alloy, so as to configure the temperature-uniforming plate 140 as a high thermal conductivity temperature-uniforming plate 140. The working medium in the temperature-equalizing plate 140 can be liquid ammonia or R134a refrigerant or the like which is compatible with aluminum metal and has large latent heat, so that the temperature-equalizing plate 140 can be normally used within a range of-30 ℃ to 120 ℃, and the refrigerant in the temperature-equalizing plate 140 can improve the temperature-equalizing capacity of the temperature-equalizing plate 140.

Further referring to fig. 1, the temperature-equalizing plate 140 can be arranged on one side of the battery module 110 departing from the heat-exchanging member 121, the heat-exchanging assembly 120 and the temperature-equalizing plate 140 are mutually matched to realize the short-time heat storage and directional heat conduction functions of the battery module 110, the heat-exchanging assembly 120 can play the effects of temperature equalization and temperature control, and the temperature difference of the battery module 110 is controlled, so that the heat-exchanging assembly 120 can meet the temperature equalization requirement when the battery module 110 is charged and discharged at a high rate.

It should be noted that, the installation positions of the temperature-equalizing plate 140 and the heat exchange assembly 120 may be exchanged, that is, the temperature-equalizing plate 140 is disposed between the chassis 150 and the battery module 110, the heat exchange assembly 120 is disposed on a side of the battery module 110 away from the temperature-equalizing plate 140, in addition, the temperature-equalizing plate 140 may be further connected to the heat exchange assembly 120, the temperature-equalizing plate 140 may be disposed on the same side of the battery module 110 as the heat exchange assembly 120, the heat exchange assembly 120 and the temperature-equalizing plate 140 may be further disposed respectively, each heat exchange assembly 120 and the temperature-equalizing plate 140 form a group, two groups of heat exchange assemblies 120 may be disposed on two sides of the battery module 110 respectively, the temperature-equalizing plate 140 and the heat exchange assemblies 120 may also be disposed on two sides of the battery module 110, the technical effects achieved by the various structural arrangements are the same as those of the above-mentioned structures, and are not repeated herein.

Wherein, combine fig. 1 and fig. 2, between heat exchange assemblies 120 and the temperature-uniforming plate 140, between heat exchange assemblies 120 and battery module 110, between temperature-uniforming plate 140 and the shell, all can be provided with heat conduction structural adhesive layer 180 between temperature-uniforming plate 140 and battery module 110, heat conduction structural adhesive layer 180 is playing mechanical connection, when promoting the effect of battery package 100 inner structure's connection stability, heat conduction structural adhesive layer 180 can also be used for heat conduction, in order to promote battery package 100's heat exchange efficiency.

With reference to fig. 1 and 5, in some further embodiments of the present invention, the battery pack 100 further includes a tray 170, and the plurality of battery cells are fixedly connected to the tray 170 through bonding, clamping, or screwing to form the battery module 110, and the heat exchanger 121 can be hermetically mounted on the tray 170 through welding, clamping, screwing, or bonding to prevent external dust and vapor from entering the battery pack 100.

The housing further comprises a sealing cover 160, the sealing cover 160 is disposed on one side of the battery module 110 facing away from the chassis 150, and the sealing cover 160 can shield the internal structure of the battery pack 100 and can play a role in sealing so as to further prevent dust and moisture from entering the battery pack 100.

According to the utility model discloses a vehicle, including foretell battery package 100. The automobile air conditioning system can adjust the temperature of the heat exchange medium so as to realize the cooling or heating of the battery pack.

According to the utility model discloses a vehicle, because battery package 100 is provided with heat exchange member 121 and energy storage piece 122, and heat exchange member 121 can directly cool off and heat battery module 110, improve heat exchange member 121 to battery module 110's heat transfer effect, be provided with phase change material spare 1222 in the energy storage piece 122, phase change material spare 1222 can play buffering and heat retaining effect, prevent that battery package 100 from rising up very fast, keep battery package 100's temperature uniformity, and can improve vehicle battery package 100's duration.

Further, when the heat exchange assembly 120 is disposed on the side of the battery module 110 opposite to the sealing cover 160, a carpet may be further laid on the sealing cover 160 to prevent the internal structure of the battery pack 100 from being damaged due to the treading of a passenger, and when the battery pack 100 is out of control due to heat, the carpet may slow down the efficiency of heat diffusion to the passenger compartment.

When the heat exchange assembly 120 is arranged between the chassis 150 of the housing and the battery module 110, and when the vehicle runs at a high speed in a high-temperature environment, the phase-change material 1222 in the battery pack 100 is melted, the thermal resistance between the phase-change material 1222 and the chassis 150 is reduced, heat generated by the battery module 110 can be transferred to the chassis 150 through the phase-change material 1222, and high-speed airflow outside the vehicle can take away the heat transferred to the chassis 150 in the running process, so that the load of an air conditioning system of the vehicle is reduced, and the cruising ability of the battery pack 100 is improved. When the battery pack 100 requires heating in a low-temperature environment, the phase-change material 1222 is solidified and contracted, the thermal resistance between the phase-change material 1222 and the chassis 150 is increased, the phase-change material 1222 becomes a heat preservation material, and at the moment, the phase-change material 1222 is matched with the aerogel to achieve a good heat preservation effect.

In the description herein, references to the description of the terms "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least some embodiments or examples of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A heat exchange assembly is applied to a battery and is characterized in that the battery comprises at least one group of battery modules (110), each group of battery modules (110) comprises a plurality of battery monomers, and each battery monomer is provided with an electrode terminal (111); the heat exchange component (120) comprises a heat exchange element (121) and an energy storage element (122),

the heat exchange member (121) is adapted to exchange heat with the battery module (110);

the energy storage piece (122) is arranged on one side, away from the battery module (110), of the heat exchange piece (121), the energy storage piece (122) comprises an accommodating piece (1221) and a phase-change material piece (1222), the accommodating piece (1221) is arranged on the heat exchange piece (121), the phase-change material piece (1222) is filled in the accommodating piece (1221), and the phase-change material piece (1222) is arranged corresponding to the electrode terminal (111).

2. The heat exchange assembly according to claim 1, wherein the battery comprises at least one set of battery modules (110), the electrode terminals (111) being disposed at both ends of the battery cells;

the number of the accommodating pieces (1221) is multiple, each accommodating piece (1221) is arranged corresponding to an electrode terminal (111) in each group of battery modules (110), and each accommodating piece (1221) is filled with the phase-change material piece (1222).

3. The heat exchange assembly according to claim 2, wherein the battery comprises two sets of battery modules (110), the two sets of battery modules (110) are arranged at intervals, and at least one accommodating piece (1221) is arranged corresponding to the electrode terminals (111) in the two sets of battery modules (110).

4. A heat exchange assembly according to claim 1, characterised in that the receiver (1221) and the heat exchange element (121) are an integrally formed part.

5. The heat exchange assembly according to claim 4, wherein the receiving member (1221) is a plurality of receiving members, each receiving member (1221) is disposed corresponding to the electrode terminal (111), and each receiving member (1221) is filled with the phase change material (1222).

6. The heat exchange assembly according to claim 1, wherein the accommodating member (1221) and the heat exchange member (121) are formed as separate pieces, and the accommodating member (1221) is adhered to the heat exchange member (121).

7. A heat exchange assembly according to claim 6, characterized in that the holder (1221) is an aerogel.

8. The heat exchange assembly according to any one of claims 1 to 7, wherein the accommodating member (1221) is provided with a plurality of accommodating cavities (131), the accommodating cavities (131) corresponding to the electrode terminals (111) are filled with the phase change material member (1222), the accommodating member (1221) covers the side surface of the heat exchange member (121), and the accommodating cavities (131) which are arranged in a staggered manner with respect to the electrode terminals (111) are filled with gas.

9. A heat exchange assembly according to claim 8, wherein any adjacent receiving chambers (131) share a common side wall to define a honeycomb structure.

10. A battery pack comprising the heat exchange assembly of any one of claims 1-9.

11. The battery pack according to claim 10, further comprising:

a housing;

a battery module (110), the battery module (110) being located within the housing;

the heat exchange assembly (120) is arranged between the chassis (150) of the shell and the battery module (110).

12. The battery pack according to claim 10, further comprising a temperature-equalizing plate (140), wherein a heat pipe is disposed in the temperature-equalizing plate (140), and the temperature-equalizing plate (140) is disposed between the heat exchanging member (121) and the battery module (110); or

The temperature equalizing plate (140) and the heat exchange assembly (120) are positioned on two sides of the battery module (110).

13. A vehicle characterized by comprising a battery pack according to any one of claims 10-12.

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