CN215119092U - Battery box and vehicle that has it - Google Patents

Abstract

The utility model discloses a battery box and vehicle that has it, the battery box includes: the heat exchanger comprises a bottom plate, a first heat exchange flow channel and a second heat exchange flow channel, wherein the first heat exchange flow channel is integrated in the bottom plate; the curb plate, the curb plate with the bottom plate links to each other and inject the open battery installation cavity up, the curb plate is equipped with second heat transfer runner and cushion chamber, at least part of cushion chamber is located the outside of second heat transfer runner. The utility model discloses a battery box, through integrating first heat transfer runner and second heat transfer runner in bottom plate and curb plate respectively, be convenient for cool off the battery simultaneously through bottom plate and curb plate, increase the cooling area of battery box, promote cooling efficiency, and the energy density of battery box has been improved, do benefit to the lightweight of implementation structure, and simultaneously, integrate the cushion chamber in curb plate department, do benefit to and absorb the collision energy through the cushion chamber, thereby play buffering and guard action to the battery box, avoid the second heat transfer runner to take place inside because of receiving the striking and leak, improve the security of battery box.

Description

Battery box and vehicle that has it

Technical Field

The utility model belongs to the technical field of the battery package manufacturing technology and specifically relates to a battery box and vehicle that has it.

Background

In prior art, power battery liquid cold plate generally arranges in electric core bottom, receive its structural limitation, it is limited to cause the inside unnecessary heat that can be taken away by the coolant liquid of battery package, it is too big to lead to the difference in temperature of the downside to appear after electric core long-term the use, it is inhomogeneous to cool off, make electric core life-span subtract by a wide margin short, electric core upper portion temperature is higher than the lower part, it obviously just aggravates day by day to lead to the electron activity degree difference of electric core upper and lower part, cause with the difference of appearance of module internal electric core life-span consumption, thereby electric core electrical property has been reduced, stability and protectiveness in the aspect of security performance etc., the probability of failure of electric core has been increased, there is the space of improvement.

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 battery box, this battery box can improve the energy density of battery package, do benefit to the lightweight of implementation structure, and be convenient for improve battery box's cooling efficiency, do benefit to and play buffering and guard action to battery box.

According to the utility model discloses battery box, include: the heat exchanger comprises a bottom plate, a first heat exchange flow channel and a second heat exchange flow channel, wherein the first heat exchange flow channel is integrated in the bottom plate; the curb plate, the curb plate with the bottom plate links to each other and inject the open battery installation cavity up, the curb plate is equipped with second heat transfer runner and cushion chamber, at least part of cushion chamber is located the outside of second heat transfer runner.

According to the battery box body of the embodiment of the utility model, the first heat exchange flow channel and the second heat exchange flow channel are respectively integrated on the bottom plate and the side plate, so that the battery can be cooled through the bottom plate and the side plate at the same time, the cooling area of the battery box body is increased, the energy density of the battery box body is improved, the light weight of the structure is favorably realized, the flow velocity of the cooling liquid can be further adjusted by changing the overall pressure in the battery box body and the pressure in the cooling pipeline, the cooling efficiency is improved, the risks of thermal runaway and the like caused by temperature or pressure shock of the battery box body are further reduced, meanwhile, the buffer cavity is integrated at the side plate, the collision energy is favorably absorbed through the buffer cavity, the buffer and protection effects are further realized on the battery box body, the buffer cavity can play a role in protecting the second heat exchange flow channel, and the internal leakage of the second heat exchange flow channel caused by collision is avoided, the safety of the battery box body is improved.

According to the utility model discloses battery box of some embodiments, the cushion chamber includes a plurality of sub-cushion chamber, and is a plurality of sub-cushion chamber spaced distribution in the outside of second heat transfer runner.

According to some embodiments of the battery box of the present invention, the sub-buffer chamber includes an upper buffer chamber and a lower buffer chamber, and a cross-sectional size of the upper buffer chamber is larger than a cross-sectional size of the lower buffer chamber; wherein go up the cushion chamber with the cushion chamber all sets up to a plurality ofly down, and is a plurality of go up the cushion chamber and distribute in proper order along upper and lower direction, and be a plurality of the cushion chamber is along horizontal direction spaced apart distribution in the below of going up the cushion chamber down.

According to the utility model discloses battery box of some embodiments, the upper portion region of second heat transfer runner with be located the one of below go up the cushion chamber and just to distributing along the horizontal direction, the lower part region of second heat transfer runner with the cushion chamber is just to distributing along the horizontal direction down.

According to the utility model discloses battery box of some embodiments, the cushion chamber still includes interior cushion chamber, interior cushion chamber is located the top of second heat transfer runner, just interior cushion chamber with it distributes in proper order to go up the cushion chamber on the horizontal direction.

According to the utility model discloses battery box of some embodiments, the curb plate with the junction of bottom plate is equipped with strengthens the chamber, it is located to strengthen the chamber the inboard of second heat transfer runner, just it is not less than to strengthen the height in chamber the height of second heat transfer runner.

According to the utility model discloses battery box of some embodiments, be equipped with a plurality of division boards in the first heat transfer runner, the division board will first heat transfer runner separates for a plurality of sub-runners, and adjacent two the sub-runner is at the tip intercommunication.

According to some embodiments of the battery box of the present invention, the first heat exchange flow passage and the second heat exchange flow passage are spaced apart; the bottom plate is provided with a first water inlet and a first water outlet, and the first water inlet and the first water outlet are respectively connected with two ends of the first heat exchange flow channel; the side plate is provided with a second water inlet and a second water outlet, and the second water inlet and the second water outlet are respectively connected with two ends of the second heat exchange flow channel.

According to the utility model discloses battery box of some embodiments, the second heat transfer runner is located the lower part region of the inboard of cushion chamber.

The utility model also provides a vehicle.

According to the utility model discloses the vehicle, be provided with any kind of embodiment the battery box body.

The vehicle and the battery box have the same advantages compared with the prior art, and the detailed description is omitted.

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 case according to an embodiment of the present invention;

fig. 2 is a front view of a battery case according to an embodiment of the present invention;

fig. 3 is a top view of a battery case according to an embodiment of the present invention;

fig. 4 is a left side view of a battery case according to an embodiment of the present invention;

fig. 5 is a cross-sectional view taken at a-a in fig. 3.

Reference numerals:

the battery case 100 is provided with a battery case,

the heat exchanger comprises a bottom plate 1, a first water inlet 11, a first water outlet 12, a first heat exchange flow channel 2, a side plate 3, a second water inlet 31, a second water outlet 32, a second heat exchange flow channel 4, a buffer cavity 5, an upper buffer cavity 51, a lower buffer cavity 52, an inner buffer cavity 53 and a reinforcing cavity 6.

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.

Referring to fig. 1-5, a battery box 100 according to an embodiment of the present invention is described, in which the battery box 100 is formed by integrating a first heat exchange flow channel 2 and a second heat exchange flow channel 4 at a bottom plate 1 and a side plate 3, respectively, so as to increase the energy density of the battery box 100, facilitate the light weight of the structure, facilitate the cooling of the battery through the bottom plate 1 and the side plate 3, and adjust the flow rate of the cooling fluid by changing the overall pressure in the battery box 100 and the pressure in the cooling pipe when the first heat exchange flow channel 2 and the second heat exchange flow channel 4 are opened simultaneously, increase the cooling efficiency, integrate a buffer chamber 5 at the side plate 3, facilitate the absorption of collision energy through the buffer chamber 5, thereby performing buffering and protecting functions on the battery box 100, and perform a protecting function on the second heat exchange flow channel 4 through the buffer chamber 5, and prevent the second heat exchange flow channel 4 from internal leakage due to collision, the safety of the battery case 100 is improved.

As shown in fig. 1, the battery box 100 according to the embodiment of the present invention includes: a bottom plate 1 and side plates 3.

As shown in fig. 1 and fig. 2, the bottom plate 1 is disposed at the bottom of the battery box 100, so as to support and protect the electric core installed inside the battery box 100, and as shown in fig. 5, a first heat exchanging flow channel 2 is integrated in the bottom plate 1, a cooling liquid can be filled in the first heat exchanging flow channel 2, and the cooling liquid can flow in the first heat exchanging flow channel 2, so that heat generated by the electric core is taken away from the bottom of the electric core in the flowing process. That is to say, integrate first heat transfer runner 2 in bottom plate 1 to need not set up other heat transfer structures alone again, can carry out the heat transfer to electric core in bottom plate 1 department of battery box 100, thereby prevent the high temperature of electric core, make the stable work of battery in suitable temperature range, and reduced the design of independent cooling plate, be convenient for reduce battery box 100's structural dimension, realize the lightweight of its structure, reduction in production cost.

As shown in fig. 1, the side plates 3 may be four, and one side edge of each of the four side plates 3 close to the bottom plate 1 is connected to the bottom plate 1, that is, the lower side edges of the four side plates 3 are respectively connected to four side edges of the bottom plate 1 in the circumferential direction, so as to support and protect the battery cell installed inside the battery box 100, and the four side plates 3 and the bottom plate 1 jointly define an upward open battery installation cavity, which is convenient for installing the battery cell in the battery installation cavity.

Wherein, as shown in fig. 5, the side plate 3 is provided with a second heat exchange flow channel 4, the second heat exchange flow channel 4 is integrated in the side plate 3, a cooling liquid can be filled in the second heat exchange flow channel 4, the cooling liquid can flow in the second heat exchange flow channel 4, thereby the heat generated by the battery core is taken away from the lateral part of the battery core in the flow process, thereby other heat exchange structures do not need to be separately arranged at the side plate 3, the light weight of the battery box 100 is favorably realized, when the temperature at the two ends of the battery core is unbalanced, the cooling adjustment is carried out through the second heat exchange flow channel 4, the unbalance of the battery core temperatures at the two ends of the battery core is avoided, and the service life of the battery core is prolonged.

As shown in fig. 5, the side plate 3 is further provided with a buffer cavity 5, and the buffer cavity 5 is also integrated in the side plate 3, so that it is unnecessary to separately provide another buffer structure at the side plate 3, which is beneficial to realize the light weight of the battery box 100, and is convenient for absorbing collision energy through the buffer cavity 5 when the side surface of the battery box 100 is subjected to external mechanical impact (for example, extrusion, side wall impact and other severe conditions), thereby buffering and protecting the battery box 100, and at least part of the buffer cavity 5 is located at the outer side of the second heat exchange flow channel 4, i.e. at least part of the buffer cavity 5 and the second heat exchange flow channel 4 are arranged side by side in the horizontal direction, and at least part of the buffer cavity 5 is located at a side of the second heat exchange flow channel 4 far from the electric core, so as to protect the second heat exchange flow channel 4 through at least part of the buffer cavity 5, thereby avoiding the second heat exchange flow channel 4 from internal leakage due to impact, the safety of the battery case 100 is improved.

It should be noted that, in the present invention, the battery case 100 further includes: a pressure sensor and a controller. Pressure sensor is used for detecting the pressure in battery box 100, the controller is used for controlling first heat transfer runner 2 and/or second heat transfer runner 4 to open and close, it can be understood that, when the temperature or pressure in battery box 100 is in the normal variation within range, the controller controls first heat transfer runner 2 to open, heat transfer is carried out in the bottom of battery box 100, the temperature in battery box 100 rises sharply, when being obviously higher than the normal range, pressure sensor detects the pressure change, and give the controller with signal transmission, at this moment, the controller controls first heat transfer runner 2 and second heat transfer runner 4 to open, further increase its heat transfer area, improve the cooling efficiency to electric core. After the temperature and the pressure in the battery box 100 are restored to the normal range, the controller controls the second heat exchange flow channel 4 to be closed, and when the first heat exchange flow channel 2 and the second heat exchange flow channel 4 are opened simultaneously, the overall pressure in the battery box 100 and the pressures in the first heat exchange flow channel 2 and the second heat exchange flow channel 4 can be changed by the controller, so that the flow rate of the cooling liquid is adjusted, the cooling efficiency is improved, the risk of thermal runaway caused by sudden changes of the temperature and the pressure of the battery box 100 is reduced, and the safety of the battery box 100 is improved.

According to the battery box 100 of the embodiment of the present invention, the first heat exchange flow channel 2 and the second heat exchange flow channel 4 are respectively integrated with the bottom plate 1 and the side plate 3, so as to cool the battery through the bottom plate 1 and the side plate 3 at the same time, increase the cooling area of the battery box 100, improve the energy density of the battery box 100, facilitate the realization of the lightweight structure, and adjust the flow rate of the cooling liquid by changing the overall pressure in the battery box 100 and the pressure in the cooling pipe, thereby improving the cooling efficiency, further reducing the risks of thermal runaway and the like caused by sudden temperature or pressure changes of the battery box 100, and simultaneously integrating the buffer cavity 5 at the side plate 3, so as to facilitate the absorption of collision energy through the buffer cavity 5, thereby playing a role in buffering and protecting the battery box 100, and playing a role in protecting the second heat exchange flow channel 4 through the buffer cavity 5, and avoiding the occurrence of internal leakage of the second heat exchange flow channel 4 due to collision, the safety of the battery case 100 is improved.

In some embodiments, the cushion chamber 5 includes a plurality of sub-cushion chambers, that is, the number of the sub-cushion chambers may be plural, which facilitates the scattered absorption of the collision energy by the plurality of sub-cushion chambers, and facilitates the cushion effect of other sub-cushion chambers to be ensured when the cushion effect of one sub-cushion chamber is invalid, and the weight of the side plate 3 is reduced by integrating the plurality of sub-cushion chambers in the side plate 3, thereby realizing the light weight of the structure.

Wherein, a plurality of sub-cushion chamber spaced apart distribute in the outside of second heat transfer runner 4, a plurality of sub-cushion chambers all can form solitary crashproof cavity respectively, do benefit to and carry out the dispersion absorption through a plurality of sub-cushion chambers of spaced apart distribution to the collision energy, and a plurality of sub-cushion chamber spaced apart distribute in the outside of second heat transfer runner 4, be convenient for receive when colliding at curb plate 3, increase cushion chamber 5 the cushion performance in the outside of second heat transfer runner 4, and then play the effect of protection to second heat transfer runner 4, improve battery box 100's security.

As shown in fig. 5, the sub-buffer cavities include an upper buffer cavity 51 and a lower buffer cavity 52, both the upper buffer cavity 51 and the lower buffer cavity 52 are hollow cavity structures, which is convenient for increasing the buffer area of the buffer cavity 5 and improving the absorption of the buffer cavity 5 on collision energy, wherein the cross-sectional dimension of the upper buffer cavity 51 is larger than the cross-sectional dimension of the lower buffer cavity 52, it can be understood that the cross-sectional dimension of the upper buffer cavity 51 in the horizontal direction is larger than the cross-sectional dimension of the lower buffer cavity 52 in the horizontal direction, which is convenient for the processing and forming of the upper buffer cavity 51, reducing the processing difficulty and reducing the production cost, it should be noted that, when the side plate 3 of the battery box 100 is collided, the collision force on the upper position of the side plate 3 is larger, and the cross-sectional dimension of the upper buffer cavity 51 is larger, which is convenient for absorbing more collision energy, and enhancing the safety of the battery box 100.

The upper buffer chamber 51 and the lower buffer chamber 52 are provided in plurality, that is, the number of the upper buffer chamber 51 and the lower buffer chamber 52 can be flexibly designed according to the actual use requirement, wherein, as shown in fig. 5, a plurality of upper buffer cavities 51 are sequentially distributed along the vertical direction, and a plurality of lower buffer cavities 52 are distributed below the upper buffer cavities 51 at intervals along the horizontal direction, it should be noted that, when the side plate 3 of the battery case 100 is impacted, the connection between the side plate 3 and the bottom plate 1 is easily damaged by the impact force, and lower cushion chamber 52 is distributed in the below of last cushion chamber 51 along the horizontal direction interval, is convenient for realize multilayer energy-absorbing effect through a plurality of lower cushion chambers 52 that arrange in proper order on the horizontal direction, strengthens cushioning performance, prevents that the junction of curb plate 3 and bottom plate 1 from appearing damaging because of the too big impact, strengthens battery box 100's security.

Thus, the upper cushion chamber 51 is disposed above the lower cushion chamber 52, two upper cushion chambers 51 are provided, two upper cushion chambers 51 are sequentially disposed in the vertical direction (vertical direction in fig. 5), the lower cushion chamber 52 is disposed below the upper cushion chamber 51, and two lower cushion chambers 52 are provided, two lower cushion chambers 52 are sequentially disposed in the horizontal direction (horizontal direction in fig. 5), so that the plurality of upper cushion chambers 51 and the plurality of lower cushion chambers 52 are engaged with each other, the area of the cushion chamber 5 is increased, and the ability of the cushion chamber 5 to absorb a collision is improved.

As shown in fig. 5, the upper region of the second heat exchange flow channel 4 is horizontally distributed opposite to the upper buffer chamber 51 located at the lowermost position, and the lower region of the second heat exchange flow channel 4 is horizontally distributed opposite to the lower buffer chamber 52. It can be understood that the upper end portion of the second heat exchange flow channel 4 and the upper buffer cavity 51 located at the lowest part are distributed just opposite to each other along the horizontal direction, the upper buffer cavity 51 located at the lowest part is located at the outer side of the upper end of the second heat exchange flow channel 4, the lower end portion of the second heat exchange flow channel 4 and the lower buffer cavity 52 are distributed just opposite to each other along the horizontal direction, and the lower buffer cavity 52 is located at the outer side of the lower end of the second heat exchange flow channel 4, so that when the side plates 3 collide, collision energy is absorbed through the upper buffer cavity 51 and the lower buffer cavity 52, the effect of protecting the second heat exchange flow channel 4 is achieved, and the safety of the second heat exchange flow channel 4 is enhanced.

As shown in fig. 5, the buffer cavity 5 further includes an inner buffer cavity 53, the inner buffer cavity 53 is located above the second heat exchange flow channel 4, and the inner buffer cavity 53 and the upper buffer cavity 51 are sequentially distributed in the horizontal direction, so that when the side plate 3 collides, the inner buffer cavity 53 absorbs collision energy generated when other structures in the battery box 100 collide with the side plate 3, and the safety of the battery box 100 is further improved.

In some embodiments, as shown in fig. 5, a reinforcing cavity 6 is disposed at a joint of the side plate 3 and the bottom plate 1, the reinforcing cavity 6 is located inside the second heat exchange flow channel 4, and the height of the reinforcing cavity 6 is not less than that of the second heat exchange flow channel 4, so that the structural strength of the joint of the side plate 3 and the bottom plate 1 is enhanced through the reinforcing cavity 6, the reinforcing cavity 6 is favorable for protecting the second heat exchange flow channel 4 inside the second heat exchange flow channel 4, and the stability and the safety of the second heat exchange flow channel 4 are enhanced.

In some embodiments, a plurality of partition plates are arranged in the first heat exchange flow channel 2, the partition plates partition the first heat exchange flow channel 2 into a plurality of sub-flow channels, and the two adjacent sub-flow channels are communicated at the end portions, it can be understood that the partition plates can be arranged in the first heat exchange flow channel 2 to partition the first heat exchange flow channel 2 into the sub-flow channels communicated with the end portions, wherein the number of the partition plates can be flexibly designed according to actual use conditions, therefore, the first heat exchange flow channel 2 can be divided into the plurality of sub-flow channels, so that the heat exchange area of the first heat exchange flow channel 2 is increased, and the heat exchange efficiency is improved.

Wherein, can understand, bottom plate 1 in this application constructs for well hollow plate, like this, through set up a plurality of division boards in first heat transfer runner 2, not only can play the effect of reposition of redundant personnel, and can play the effect of support between the upper plate of bottom plate 1 and lower side plate to do benefit to and improve bottom plate 1's overall structure intensity, guarantee bottom plate 1 to the support intensity of inside electric core, improve the inside stability of battery box 100.

In some embodiments, the first heat exchange flow channel 2 and the second heat exchange flow channel 4 are spaced apart, i.e. the first heat exchange flow channel 2 and the second heat exchange flow channel 4 are not in communication. Wherein, as shown in fig. 5, the bottom plate 1 is provided with a first water inlet 11 and a first water outlet 12, the first water inlet 11 and the first water outlet 12 are respectively connected with both ends of the first heat exchanging flow channel 2, so that the cooling liquid can enter from the first water inlet 11, then heat exchange is performed on the heat at the bottom plate 1 via the first heat exchanging flow channel 2, and then the heat is taken out from the first water outlet 12, and as shown in fig. 3 and 4, the side plate 3 is provided with a second water inlet 31 and a second water outlet 32, the second water inlet 31 and the second water outlet 32 are respectively connected with both ends of the second heat exchanging flow channel 4, so that the cooling liquid can enter from the second water inlet 31, then heat exchange is performed on the heat at the bottom plate 1 via the second heat exchanging flow channel 4, then the heat is taken out from the second water outlet 32, so that the cooling liquid respectively circulates in the first heat exchanging flow channel 2 and the second heat exchanging flow channel 4, and takes the heat in the battery box 100 away, the heat exchange efficiency is improved, and the safety of the battery box 100 is improved.

In some embodiments, the first heat exchange flow channel 2 and the second heat exchange flow channel 4 are spaced apart, that is, the first heat exchange flow channel 2 and the second heat exchange flow channel 4 may be configured to be in a non-communicated structure, so that heat exchange between the first heat exchange flow channel 2 and the second heat exchange flow channel 4 is not affected, and therefore, when one of the first heat exchange flow channel 2 and the second heat exchange flow channel 4 is in a problem, heat exchange of the other heat exchange flow channel is not affected, or the first heat exchange flow channel 2 and the second heat exchange flow channel 4 may be configured to be in a communicated structure, that is, the first heat exchange flow channel 2 and the second heat exchange flow channel 4 may be communicated with each other, so that when the overall pressure or temperature in the battery box 100 suddenly increases, the heat exchange area is increased through the two communicated heat exchange flow channels, the cooling efficiency is improved, the cooling effect is more obvious, and risks such as thermal runaway caused by sudden temperature or pressure change of the battery box 100 are further reduced, when the heat exchange requirement of one heat exchange runner is large, balance can be achieved through the other heat exchange runner, heat exchange can be achieved through the two heat exchange runners, and heat exchange efficiency and safety are guaranteed.

In some embodiments, as shown in fig. 5, the second heat exchange flow channel 4 is located inside the buffer cavity 5, so that the second heat exchange flow channel 4 directly takes away heat in the battery box 100, the heat exchange efficiency is improved, the buffer cavity 5 plays a role in protecting the second heat exchange flow channel 4, the stability and the safety of the second heat exchange flow channel 4 are enhanced, and the lower region of the inner side of the buffer cavity 5 where the second heat exchange flow channel 4 is located does not occupy the installation space of the upper portion, so that the overall structure size of the battery box 100 is easily reduced, and the practicability of the battery box 100 is enhanced.

The utility model also provides a vehicle.

According to the utility model discloses the vehicle, be provided with battery box 100 of any kind of above-mentioned embodiment, through bottom plate 1 and the curb plate 3 with heat transfer runner integration in battery box 100, the energy density of battery box 100 has been improved, do benefit to the lightweight of implementation structure, be convenient for cool off the battery simultaneously through bottom plate 1 and curb plate 3, increase battery box 100's cooling area, and the accessible changes the pressure in whole pressure and the heat transfer runner in the battery box 100, and then adjust the velocity of flow of coolant liquid, promote cooling efficiency, the cooling effect is more obvious, further reduce battery box 100 because of the thermal runaway risk that temperature or pressure snap caused, improve the security of vehicle.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present 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 (10)

1. A battery case (100), comprising:

the heat exchanger comprises a bottom plate (1), wherein a first heat exchange flow channel (2) is integrated in the bottom plate (1);

curb plate (3), curb plate (3) with bottom plate (1) links to each other and inject open battery installation cavity up, curb plate (3) are equipped with second heat transfer runner (4) and cushion chamber (5), at least part of cushion chamber (5) is located the outside of second heat transfer runner (4).

2. The battery box (100) of claim 1, wherein the buffer cavity (5) comprises a plurality of sub buffer cavities, and the sub buffer cavities are distributed at intervals outside the second heat exchange flow channel (4).

3. The battery box (100) of claim 2, wherein the sub-buffer cavities comprise an upper buffer cavity (51) and a lower buffer cavity (52), the cross-sectional dimension of the upper buffer cavity (51) being greater than the cross-sectional dimension of the lower buffer cavity (52); wherein

Go up cushion chamber (51) with cushion chamber (52) down all sets up to a plurality ofly, and is a plurality of go up cushion chamber (51) distribute in proper order along upper and lower direction, and it is a plurality of cushion chamber (52) down are along the spaced apart below of going up cushion chamber (51).

4. The battery box (100) according to claim 3, wherein the upper region of the second heat exchange flow channel (4) is arranged opposite to the lowest one of the upper buffer cavities (51) along the horizontal direction, and the lower region of the second heat exchange flow channel (4) is arranged opposite to the lower buffer cavity (52) along the horizontal direction.

5. The battery box body (100) of claim 3, wherein the buffer cavity (5) further comprises an inner buffer cavity (53), the inner buffer cavity (53) is located above the second heat exchange flow channel (4), and the inner buffer cavity (53) and the upper buffer cavity (51) are distributed in sequence in the horizontal direction.

6. The battery box body (100) according to claim 1, wherein a reinforcing cavity (6) is arranged at the joint of the side plate (3) and the bottom plate (1), the reinforcing cavity (6) is positioned at the inner side of the second heat exchange flow channel (4), and the height of the reinforcing cavity (6) is not less than the height of the second heat exchange flow channel (4).

7. The battery box (100) of claim 1, wherein a plurality of partition plates are arranged in the first heat exchange flow channel (2), the partition plates divide the first heat exchange flow channel (2) into a plurality of sub-flow channels, and two adjacent sub-flow channels are communicated at the end parts.

8. The battery box (100) of claim 1, wherein the first heat exchange flow channel (2) and the second heat exchange flow channel (4) are spaced apart; wherein

The bottom plate (1) is provided with a first water inlet (11) and a first water outlet (12), and the first water inlet (11) and the first water outlet (12) are respectively connected with two ends of the first heat exchange flow channel (2);

the side plate (3) is provided with a second water inlet (31) and a second water outlet (32), and the second water inlet (31) and the second water outlet (32) are respectively connected with two ends of the second heat exchange flow channel (4).

9. The battery box (100) according to claim 1, wherein the second heat exchange flow channel (4) is located in a lower region of the inside of the buffer chamber (5).

10. A vehicle, characterized in that a battery case (100) according to any one of claims 1 to 9 is provided.

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