CN219017767U - Heat exchange plate and battery device - Google Patents

Abstract

The utility model discloses a heat exchange plate and a battery device, wherein the heat exchange plate comprises a heat exchange area and a buffer area which are distributed in a first direction, and at least one first partition board is arranged in the heat exchange area; the at least one first partition plate is used for separating and forming at least two heat exchange cavities in the heat exchange area; at least one second baffle is arranged in the buffer zone; the at least one second partition is used for forming at least two buffer cavities in the buffer zone respectively; the distance from the first partition plate of each heat exchange cavity to the central line of the corresponding heat exchange cavity is H1, the distance from the second partition plate of each buffer cavity to the central line of the adjacent heat exchange cavity is H2, and the H2/H1 is 0.05-0.98. A battery device comprises at least two batteries and the heat exchange plate. The utility model effectively slows down deformation in the use process and improves heat exchange efficiency.

Description

Heat exchange plate and battery device

Technical Field

The utility model relates to the technical field of power batteries, in particular to a heat exchange plate and a battery device.

Background

At present, with the development of new energy automobile industry, the requirement of consumers on quick charging of power batteries is gradually increased. However, the power battery expands during charge and discharge, and the degree of expansion directly affects the cycle life of the battery. In the power battery, heat exchange is generally performed by using a heat exchange plate, and because the heat exchange plate is arranged between single batteries of the power battery, the expansion force generated in the charging and discharging processes of the single batteries can squeeze the batteries, so that the heat exchange plate deforms to influence the heat exchange performance.

Disclosure of Invention

In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a heat exchange plate, wherein a second baffle plate of a buffer cavity deviates from the center of the heat exchange cavity, so that the center of the heat exchange cavity is prevented from being extruded when a buffer area is stressed, the deformation of the heat exchange cavity in the use process is effectively slowed down, and the heat exchange efficiency is improved.

The second object of the utility model is to provide a battery device, wherein the second separator of the buffer cavity in the heat exchange plate deviates from the center of the heat exchange cavity, so that the buffer area is prevented from being extruded by the battery to extrude the center of the heat exchange cavity, the deformation of the heat exchange cavity in the use process is effectively slowed down, the deformation of the heat exchange plate in the use process can be effectively slowed down, and the heat exchange efficiency is improved.

One of the purposes of the utility model is realized by adopting the following technical scheme:

the heat exchange plate comprises a heat exchange area and a buffer area which are distributed in a first direction, wherein at least one first partition board is arranged in the heat exchange area; the at least one first partition plate is used for separating and forming at least two heat exchange cavities in the heat exchange area; the heat exchange cavity is used for exchanging heat through a heat exchange medium; at least two heat exchange cavities are distributed in a second direction; at least one second baffle is arranged in the buffer zone; the at least one second partition is used for forming at least two buffer cavities in the buffer zone respectively; the buffer cavity is used for absorbing the stress of the heat exchange plate through deformation so as to buffer the stress of the heat exchange plate; at least two of the buffer cavities are distributed in the second direction; the second direction is perpendicular to the first direction; the distance from the first partition plate of each heat exchange cavity to the central line of the adjacent heat exchange cavity is H1, the distance from the second partition plate of each buffer cavity to the central line of the adjacent heat exchange cavity is H2, and the H2/H1 is 0.05-0.98.

The second purpose of the utility model is realized by adopting the following technical scheme:

a battery device, comprising,

at least two batteries, wherein the surface with the largest surface area of the batteries is the large surface of the batteries;

the heat exchange plates are sequentially arranged in the first direction; a heat exchange plate is arranged between the large battery surfaces of two adjacent batteries, and the heat exchange area of the heat exchange plate is attached to the large battery surface of one of the batteries; and the buffer area of the heat exchange plate is attached to the large surface of the battery of the adjacent battery.

Compared with the prior art, the utility model has the beneficial effects that:

1. the heat exchange area of the heat exchange plate can be internally provided with at least one first baffle plate, at least two heat exchange cavities are formed by dividing the heat exchange area, on one hand, heat exchange media can be dispersed and guided into the heat exchange areas through the at least two heat exchange cavities for heat exchange, the heat exchange effect is more uniform, on the other hand, the at least one first baffle plate can form a reinforcing effect in the heat exchange area, the deformation of the heat exchange area is reduced, the deformation amount of the heat exchange area is small, the flow of heat exchange liquid is smoother, and the heat exchange effect is better.

2. When the heat exchange plate is applied to a battery device, the buffer area of the heat exchange plate is easy to be extruded by a battery, the ratio of the distance from the second baffle plate in the buffer area of the heat exchange plate to the central line of the buffer cavity to the distance from the first baffle plate in the heat exchange area to the central line of the heat exchange cavity is 0.05-0.98, namely, the second baffle plate deviates from the center of the heat exchange cavity, so that the deformation of the heat exchange cavity caused by the fact that the buffer cavity of the buffer area extrudes the center of the heat exchange cavity when the buffer cavity is extruded and deformed is avoided, the deformation of the heat exchange area can be further effectively slowed down, the flow resistance of the heat exchange cavity is reduced, and the heat exchange efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of a heat exchange plate according to the present utility model;

FIG. 2 is a schematic view of a partial enlarged structure in FIG. 1;

FIG. 3 is a schematic view of another structure of the heat exchange plate of the present utility model;

fig. 4 is a schematic view of another structure of the heat exchange plate of the present utility model;

fig. 5 is a schematic view of the structure of the battery pack of the present utility model.

In the figure: 10. a heat exchange plate; 11. a heat exchange area; 111. a first separator; 112. a heat exchange cavity; 12. a buffer area; 121. a second separator; 122. a buffer cavity; 13. a current collector; 20. a battery pack; 30. and a beam body.

Detailed Description

The utility model will be further described with reference to the accompanying drawings and detailed description below:

in the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

A heat exchanger plate 10 as shown in fig. 1 and 2, the heat exchanger plate 10 comprises a heat exchanger zone 11 and a buffer zone 12, and the heat exchanger zone 11 and the buffer zone 12 are distributed in a first direction (see X direction in fig. 1) and provided with at least one first separator 111 inside the heat exchanger zone 11; at least one first partition 111 may divide the heat transfer zone 11 into at least two heat transfer cavities 112 after being disposed in the heat transfer zone 11, the heat transfer cavities 112 may be used for heat transfer by a heat transfer medium, and the at least two heat transfer cavities 112 may be distributed in a second direction (see Y direction in fig. 1). In this embodiment, the first direction is a thickness direction of the heat exchange plate, and the second direction may be a height direction of the heat exchange plate, and the thickness of the heat exchange plate refers to an arrangement direction of the batteries of the battery device after the heat exchange plate is applied to the battery device or the battery pack, and the second direction is a height direction of the batteries.

Similarly, at least one second partition 121 is disposed in the buffer area 12, and after the at least one second partition 121 is disposed in the buffer area 12, at least two buffer cavities 122 are formed in the buffer area 12, and the buffer cavities can be used for absorbing the stress of the heat exchange plate through deformation so as to buffer the stress of the heat exchange plate. Also, the at least two buffer cavities 122 are distributed in the second direction.

Specifically, the distance from the first partition 111 of each heat exchange cavity 112 to the center line of the corresponding heat exchange cavity 112 is H1, the distance from the second partition 121 of each buffer cavity 122 to the center line of the adjacent heat exchange cavity is H2, and the H2/H1 is 0.05-0.98.

Since the heat exchange area is provided with at least two heat exchange cavities and the buffer area is provided with at least two buffer cavities, the buffer cavities necessarily have a heat exchange cavity structure adjacent to the buffer cavities in the second direction.

In the embodiment, the following three correspondence relationships are used to describe the second partition plate and the heat exchange cavity adjacent to the second partition plate, because the correspondence relationship between the second partition plates and the heat exchange cavities is multiple in the actual situation:

the first corresponding relation is that each second partition board corresponds to one heat exchange cavity, referring to fig. 1, when the second partition board is a, the heat exchange cavity adjacent to the second partition board is A, and when the second partition board is B, the heat exchange cavity adjacent to the second partition board is B, and so on, on the basis of the structure, each heat exchange cavity is provided with a corresponding second partition board for bearing the expansion force of a battery, and each heat exchange cavity of a heat exchange area is effectively buffered.

The second correspondence is that every at least two second separators are disposed corresponding to one heat exchange cavity, referring to fig. 3, when the second separator is A1, the heat exchange cavity adjacent to the second separator is A1; when the second partition board is B1, the heat exchange cavity adjacent to the second partition board is B1, so that the like can be used, on the basis of the structure, although each heat exchange cavity is provided with the second partition board for buffering, the more the second partition boards corresponding to the same heat exchange cavity are, the more the buffer area strength at the corresponding position is enhanced, the deformation is not easy to occur, and the buffering effect is poor.

The third corresponding relation is that at least two heat exchange cavities are distributed in the corresponding heat exchange section between every two second clapboards, see fig. 4, under the corresponding relation, the heat exchange cavity adjacent to the second clapboards A2 is A2, the heat exchange cavity adjacent to the second clapboards B2 is B3, and so on, on the basis of the structure, at least one heat exchange cavity is not arranged corresponding to the second clapboards, and then the buffer area can have a buffer blind area, and at the moment, the buffer area can not effectively buffer each heat exchange cavity, and the buffer effect is poor.

Of course, the correspondence between the distribution of the plurality of second baffles and the distribution of the plurality of heat exchange cavities is not limited to the above, and in any case, the heat exchange cavity adjacent to the second baffles refers to a heat exchange cavity corresponding to the connection position of one end, close to the heat exchange area, of the second baffles, and the distance H2 between the second baffles and the adjacent heat exchange cavity is the distance between the point where the second baffles are in contact with the wall of the heat exchange cavity and the center line.

On the basis of the above structure, when the heat exchange plate 10 is applied to the battery device 20 and is actually assembled, the battery device 20 is formed by stacking a plurality of batteries, the plurality of batteries can be sequentially arranged in the first direction, and the heat exchange plate 10 has the following two installation positions in the battery box body,

first mounting position: the heat exchange plate 10 is disposed between two adjacent cells in the first direction, and since the heat exchange plate 10 has the heat exchange area 11 and the buffer area 12 on both sides in the first direction, when the heat exchange plate 10 is applied between the two adjacent cells, the heat exchange area 11 of the heat exchange plate 10 can be attached to one of the cells, the buffer area 12 of the heat exchange plate 10 can be attached to the other cell, the heat exchange area 11 of the heat exchange plate 10 can be used for exchanging heat with the cell, and the buffer area 12 of the heat exchange plate 10 can buffer the extrusion force applied to the heat exchange plate 10 from the cell at the side due to self expansion or external force.

Second mounting position: the heat exchange plate 10 is arranged between the battery and the beam body 30 in the battery box body, in the case of the installation position, the heat exchange area 11 of the heat exchange plate 10 can be attached to the battery, the buffer area 12 of the heat exchange plate 10 can be attached to the beam body 30 of the battery box body, in the case, the heat exchange area 11 of the heat exchange plate 10 is used for exchanging heat for the battery, and the buffer area 12 of the heat exchange plate 10 can be used for buffering the extrusion force applied to the heat exchange plate 10 by the beam body 30 due to the collision of the battery box body under the external force when the battery box body is stressed, and the buffer effect can be realized.

The heat exchange area 11 and the buffer area 12 of the heat exchange plate 10 can achieve the same effect whether the heat exchange plate is applied to the first installation position or the second installation position.

The heat exchange plate 10 is in the first mounting position, and the heat exchange plate is used to cool the battery,

when the normal battery is used, a large amount of heat is generated in the battery device, so that the battery needs to be radiated, the heat exchange area 11 of the heat exchange plate 10 is filled with cooling liquid, and when the cooling liquid flows in the heat exchange area 11, the cooling liquid can bring heat generated by the battery attached to the cooling liquid, so that the battery device in use can be cooled, the thermal runaway phenomenon of the battery device caused by overheating is reduced, and the use is safer.

However, since the heat exchange cavity 112 of the heat exchange plate 10 is filled with the cooling liquid, the heat exchange area 11 of the heat exchange plate 10 will not have enough strength due to the structure of the heat exchange cavity 112, and the heat exchange plate 10 is arranged between the batteries, the batteries will expand circularly during use, or vibration occurs due to external force, which results in the batteries extruding the heat exchange area 11 of the heat exchange plate 10 attached to the batteries, and deformation easily occurs after the heat exchange area 11 is pressed, which results in the flow of the cooling liquid in the heat exchange cavity 112 being blocked, thereby affecting the heat exchange effect.

So in this application, can be in the heat transfer district 11 of above-mentioned heat transfer board 10 through setting up at least one first baffle 111, separate heat transfer district 11 and form two at least heat transfer cavity 112, on the one hand, the coolant liquid can disperse and guide into through two at least heat transfer cavity 112 and carry out the heat transfer, the heat transfer effect is more even, at least one first baffle 111 that on the other hand set up can form the enhancement effect in the inside of heat transfer district 11, reduce the deformation of heat transfer district 11, heat transfer district 11 deflection is little, the coolant liquid flows more smoothly, the heat transfer effect is better.

In addition, a buffer zone 12 is further disposed at the side of the heat exchange zone 11, the buffer zone 12 is attached to one of the two adjacent batteries, no cooling liquid is introduced into the buffer zone 12, and a buffer cavity 122 is formed by at least one second partition 121, when the single battery expands and presses the buffer zone 12, the buffer cavity 122 of the buffer zone 12 is compressed to buffer the acting force directly applied to the heat exchange zone 11, and likewise, the at least one second partition 121 can form a reinforcing structure in the buffer zone 12 to buffer the expansion extrusion force of the battery at the side of the heat exchange plate 10, so that the two sides of the heat exchange plate 10 are prevented from being expanded by the battery and receiving larger extrusion force, the deformation amount in the heat exchange zone 11 of the heat exchange zone 11 is slowed down, the deformation amount of the heat exchange zone 11 is small, the cooling liquid flows more smoothly, and the heat exchange effect is better.

Specifically, the ratio of the distance H2 from the second baffle plate in the buffer zone of the heat exchange plate to the center line of the buffer cavity to the distance H1 from the first baffle plate in the heat exchange zone to the center line of the heat exchange cavity is between 0.05 and 0.98, that is, the acting point of the second baffle plate 121 in the heat exchange zone 11 deviates from the center line of the heat exchange cavity 112, but the distance from the acting point of the second baffle plate 121 in the heat exchange zone 11 to the center line is closer than the distance from the first baffle plate 111 to the center line, so that when the buffer zone 12 is stressed, the first baffle plate 111 of each buffer cavity 122 is stressed and deviates from the center position of the heat exchange cavity 112, the second baffle plate deviates from the center of the heat exchange cavity, thereby avoiding the situation that the heat exchange cavity deformation caused by the center position of the buffer cavity in the buffer zone when the buffer cavity is extruded and deformed causes flow resistance increase to influence heat dissipation, further reducing the deformation of the heat exchange zone, reducing the flow resistance of the heat exchange cavity and improving the heat dissipation efficiency.

In addition, because the second baffle deviates from the central position of the heat exchange cavity and is not corresponding to the first baffle, namely the first baffle and the second baffle cannot be close to each other, the first baffle cannot interfere the second baffle when the second baffle is stressed, so that the deformation of the buffer cavity cannot be influenced, otherwise, the deformation of the second baffle is influenced due to the supporting effect of the first baffle on the buffer cavity and the heat exchange cavity, and the deformation of the buffer space is influenced. Therefore, in the embodiment, the H2/H1 is 0.05-0.98, so that the heat dissipation effect is better.

The heat transfer effect is characterized by the temperature rise rate of the battery cell under normal temperature charging conditions in the following specific embodiments:

in the case of example 1,

the distance H2 from the second partition plate of each buffer cavity to the central line of the buffer cavity is 0.3mm, the distance H1 from the first partition plate of each heat exchange cavity to the central line of the heat exchange cavity is 6mm, H2/H1 is 0.05, and under the condition of the proportion, the temperature rise rate (DEG C/min) of the battery cell under the normal-temperature charging working condition is 0.5.

In the case of example 2,

the distance H2 from the second partition plate of each buffer cavity to the central line of the buffer cavity is 4mm, the distance H1 from the first partition plate of each heat exchange cavity to the central line of the heat exchange cavity is 4.1mm, H2/H1 is 0.9756, and under the condition of the proportion, the temperature rise rate (DEG C/min) of the battery cell under the normal-temperature charging working condition is 0.54.

In the case of example 3,

the distance H2 from the second partition plate of each buffer cavity to the central line of the buffer cavity is 0.5mm, the distance H1 from the first partition plate of each heat exchange cavity to the central line of the heat exchange cavity is 5mm, H2/H1 is 0.1, and under the condition of the proportion, the temperature rise rate (DEG C/min) of the battery cell under the normal-temperature charging working condition is 0.51.

In the case of example 4,

the distance H2 from the second partition plate of each buffer cavity to the central line of the buffer cavity is 2mm, the distance H1 from the first partition plate of each heat exchange cavity to the central line of the heat exchange cavity is 2.2mm, H2/H1 is 0.9091, and under the condition of the proportion, the temperature rise rate (DEG C/min) of the battery cell under the normal-temperature charging working condition is 0.52.

In example 5 the process was carried out,

the distance H2 from the second partition plate of each buffer cavity to the central line of the buffer cavity is 3mm, the distance H1 from the first partition plate of each heat exchange cavity to the central line of the heat exchange cavity is 4.2mm, H2/H1 is 0.7143, and under the condition of the proportion, the temperature rise rate (DEG C/min) of the battery cell under the normal-temperature charging working condition is 0.53.

In comparative example 1,

the distance H2 from the second partition plate of each buffer cavity to the central line of the buffer cavity is 1.98mm, the distance H1 from the first partition plate of each heat exchange cavity to the central line of the heat exchange cavity is 2mm, H2/H1 is 0.99, and under the condition of the proportion, the temperature rise rate (DEG C/min) of the battery cell under the normal-temperature charging working condition is 0.57.

The above examples 1-5 and comparative example 1 were prepared as one of the following tables:

list one

As can be seen from the above table one, under the conditions of H2/H1 of 0.05, 0.9756, 0.1 and 0.71, the corresponding battery temperature rise rate of the battery core under the normal temperature charging working condition of 0.5-0.54, namely, the battery temperature rise rate is lower, and the heat transfer effect of the battery is better, namely, the heat transfer effect of the battery is better when the H2/H1 is in the range of 0.05-0.98.

Further, in the range of 0.05-0.98H 2/H1, the above H1 is 0.5-6 mm and H2 is 0.3-5 mm.

When H2/H1 is 0.1, the temperature rise rate of the battery core under normal temperature charging working condition of the corresponding battery is 0.51, H2/H1 is 0.9, the temperature rise rate of the battery core under normal temperature charging working condition of the corresponding battery is 0.52, and when the two endpoints are used, the temperature rise rates of the battery core under normal temperature charging working condition respectively corresponding to the two endpoints are about 0.5, so that the heat transfer effect of the battery is better.

Further, H2/H1 is 0.1-0.9 and H2/H1 is 0.05-0.98, H1 is 1.5mm-5mm, H2 is 0.5mm-3mm.

In addition, referring to comparative example 1, when H2/H1 is 0.99, the corresponding temperature rise rate of the cell under normal temperature charging conditions is 0.57, i.e., when H2/H1 is greater than 0.98, the temperature rise rate of the cell under normal temperature charging conditions is significantly increased, i.e., the heat transfer efficiency is relatively low.

Of course, the heat exchange refers to the cooling and heat dissipation of the battery by introducing the cooling liquid into the heat exchange cavity, and in other cases, when the battery device is applied to an environment with a relatively low temperature, the battery is easy to run out due to the relatively low use environment temperature, so that the working efficiency of the battery is low. Therefore, the heat fluid can be introduced into the heat exchange cavity of the heat exchange area for heating the battery, the battery can work at normal temperature, and the working efficiency is higher. That is, the heat exchange medium can be liquid cooling or liquid heating, and the heat exchange medium can be gas or liquid in the prior art, such as water and glycol.

Further, the second separator 121 is disposed obliquely, and the second separator 121 disposed obliquely can decompose the force applied by the battery along the first direction into two forces in the first direction and the second direction, so that the expansion force of the battery along the first direction can be effectively reduced, the heat exchange area 11 of the heat exchange plate 10 is less prone to deformation, the buffering effect is better, and further the situation that the heat resistance is increased due to severe deformation of the heat exchange area 11 is avoided, and the cooling effect is improved.

Of course, in the case where the second separator is disposed horizontally, the second separator is parallel to the corresponding center line, and thus the distances between the points are the same.

In example 6 the process was carried out,

in this embodiment, each second separator corresponds to one heat exchange cavity, referring to fig. 1, when the second separator is a, the heat exchange cavity adjacent to the second separator is a, and when the second separator is B, the heat exchange cavity adjacent to the second separator is B, and so on, on the basis of this structure, each heat exchange cavity has a corresponding second separator for receiving the expansion force of the battery, so as to effectively buffer each heat exchange cavity of the heat exchange area.

Namely, each heat exchange cavity in the heat exchange area is correspondingly provided with a buffer cavity, namely, each buffer cavity can buffer the corresponding heat exchange cavity, and when the buffer area is stressed, each heat exchange cavity is prevented from being extruded.

Further, the first partition 111 and the second partition 121 in the present embodiment are each provided with a plurality of; the plurality of first partition plates 111 are divided into a plurality of heat exchange cavities 112 in the heat exchange area 11; the plurality of second partition plates 121 are separated in the buffer zone 12 to form a plurality of buffer cavities 122, so that a plurality of heat exchange cavities 112 can be formed in the heat exchange zone 11 through the plurality of first partition plates 111, the strength is better, the heat exchange fluid is more dispersed, and the heat exchange effect is more uniform. The second separator 121 is provided with a plurality of buffer chambers 122, which can form multi-point buffer in the buffer area 12, so that the multi-point buffer has better anti-deformation effect due to the dispersion of the expansion extrusion force or external pressure of the battery.

Further, the heat exchange cavity 112 in this embodiment may be filled with a heat exchange fluid (such as water, gas, etc.), and the buffer cavity 122 may be filled with at least one of air, a heat insulating member, and a phase change material, and air is preferred in the present utility model to enable sufficient compression deformation.

In example 7,

in this embodiment, the battery device is used as a battery pack, and referring to a battery pack 20 shown in fig. 1-5, the battery pack includes at least two batteries, a surface with the largest surface area of the batteries is a large battery surface, the heat exchange plates 10 in any embodiment are arranged on the large battery surfaces of two adjacent batteries, and the heat exchange areas 11 of the heat exchange plates 10 are attached to the large battery surface of one of the batteries; the buffer area 12 of the heat exchange plate 10 is largely adhered to the battery of the adjacent other battery.

Unlike the above embodiments 1, during assembly, the heat exchange area 11 of the heat exchange plate 10 may be preferably attached to the large battery surface, where the large battery surface is the surface with the largest battery surface area, in this embodiment, a single battery is taken as an example of a square battery, and a square battery is taken as an example of a square battery, where the square battery has six surfaces, i.e., the surface with the largest surface area is the large battery surface, and has a larger contact area with the heat exchange area 11, and during heat exchange, heat exchange with a larger area can be achieved by attaching the heat exchange area 11 of the heat exchange plate 10 to the large battery surface, thereby improving heat exchange efficiency and realizing effective heat exchange of the battery. Of course, when the battery is a cylindrical battery, the cylindrical battery may have a cylindrical structure, and in this case, the large surface of the cylindrical battery may be the outer circumferential surface of the cylinder.

The heat exchange plate 10 is applied to the first installation position or the second installation position, and after the heat exchange plate 10 is applied to the battery pack 20, the heat exchange area 11 and the buffer area 12 can achieve the same effects as those in any of the above embodiments, and will not be described in detail herein.

In the case of example 8,

in this embodiment, the battery device is a battery pack, and includes a battery box and the battery pack 20 in embodiment 6, where the battery pack 20 is installed in the battery box, and since the battery pack 20 has the heat exchange plate 10 in any of the embodiments, after the battery pack 20 to which the heat exchange plate 10 is applied is assembled to the battery box, there are the effects brought by the heat exchange plate 10, and the assembly of the heat exchange plate 10 with the battery pack 20 and the battery box may be as follows:

first mounting position: the heat exchange plate 10 is disposed between two adjacent cells in the first direction, and since the heat exchange plate 10 has the heat exchange area 11 and the buffer area 12 on both sides in the first direction, when the heat exchange plate 10 is applied between the two adjacent cells, the heat exchange area 11 of the heat exchange plate 10 can be attached to one of the cells, the buffer area 12 of the heat exchange plate 10 can be attached to the other cell, the heat exchange area 11 of the heat exchange plate 10 can be used for dissipating heat from the cell, and the buffer area 12 of the heat exchange plate 10 can buffer the extrusion force applied to the heat exchange plate 10 by self-expansion or external force applied from the cell on the side.

Second mounting position: the heat exchange plate 10 is arranged between the battery and the beam body 30 in the battery box body, in the case of the installation position, the heat exchange area 11 of the heat exchange plate 10 can be attached to the battery, the buffer area 12 of the heat exchange plate 10 can be attached to the beam body 30 of the battery box body, in the case, the heat exchange area 11 of the heat exchange plate 10 is used for exchanging heat for the battery, and the buffer area 12 of the heat exchange plate 10 can be used for buffering the extrusion force applied to the heat exchange plate 10 by the beam body 30 due to the collision of the battery box body under the external force when the battery box body is stressed, and the buffer effect can be realized.

However, the heat exchange area 11 and the buffer area 12 of the heat exchange plate 10 can achieve the same effects as those of any of the embodiments described above, and the detailed description thereof is omitted.

It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the utility model as defined in the appended claims.

Claims (9)

1. The heat exchange plate is characterized in that the heat exchange plate (10) comprises a heat exchange area (11) and a buffer area (12) which are distributed in a first direction, and at least one first partition board (111) is arranged in the heat exchange area (11); the at least one first partition (111) is used for forming at least two heat exchange cavities (112) in the heat exchange area (11) in a separated mode; the heat exchange cavity (112) is used for exchanging heat through a heat exchange medium; at least two of the heat exchange cavities (112) are distributed in a second direction; at least one second partition board (121) is arranged in the buffer zone (12); the at least one second partition (121) is used for forming at least two buffer cavities (122) in the buffer zone (12) in a separated mode; the buffer cavity (122) is used for absorbing the stress of the heat exchange plate through deformation so as to buffer the stress of the heat exchange plate; -at least two of said buffer cavities (122) being distributed in said second direction; the second direction is perpendicular to the first direction; the distance from the first partition plate (111) of each heat exchange cavity (112) to the central line of the corresponding heat exchange cavity (112) is H1, the distance from the second partition plate (121) of each buffer cavity (122) to the central line of the adjacent heat exchange cavity is H2, and the H2/H1 is 0.05-0.98.

2. A heat exchanger plate (10) according to claim 1, wherein the H2/H1 is 0.1-0.9.

3. A heat exchanger plate (10) according to claim 1, wherein the H1 is 0.5-6 mm.

4. A heat exchanger plate (10) according to claim 3, wherein the H1 is 1.5mm-5mm.

5. A heat exchanger plate (10) according to claim 1, wherein the H2 is 0.3-5 mm.

6. A heat exchanger plate (10) according to claim 5, wherein the H2 is 0.5-3 mm.

7. A heat exchanger plate according to claim 1, wherein the second separator plate (121) is arranged obliquely.

8. A heat exchanger plate according to claim 1, wherein each of said second baffles (121) is arranged in correspondence of one of said heat exchanging cavities (112).

9. A battery device is characterized by comprising,

at least two batteries, wherein the surface with the largest surface area of the batteries is the large surface of the batteries;

the heat exchanger plate (10) according to any one of claims 1-8, the at least two cells being arranged in sequence in the first direction; a heat exchange plate (10) is arranged between the large battery surfaces of two adjacent batteries, and a heat exchange area (11) of the heat exchange plate (10) is attached to one large battery surface of one battery; the buffer area (12) of the heat exchange plate (10) is attached to the large surface of the battery of the other adjacent battery.

Images