Heat exchange device and battery system

Abstract

The invention discloses a heat exchange device and a battery system. The heat exchange device comprises a first partition plate, a second partition plate and a heat exchange assembly. The second partition plate and the first partition plate are oppositely arranged to form a containing cavity, and the containing cavity is used for containing the battery cell stacking body. The heat exchange assembly is arranged between the first partition plate and the second partition plate and divides the containing cavity into a first cavity body and a second cavity body. The heat exchange assembly comprises a first liquid cooling plate, a second liquid cooling plate and an exhaust plate, the first liquid cooling plate is attached to one side of the exhaust plate, and the second liquid cooling plate is attached to the other side of the exhaust plate. A first exhaust channel is formed in the exhaust plate and used for being communicated with the outside. The first liquid cooling plate is provided with a first exhaust hole, the first exhaust hole communicates with the first cavity and the first exhaust channel, the second liquid cooling plate is provided with a second exhaust hole, and the second exhaust hole communicates with the second cavity and the first exhaust channel. The heat exchange device can directionally discharge high-temperature flue gas, so that the safety of the whole battery system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery equipment, and in particular to a heat exchange device and a battery system. Background Art

[0002] During the use of the battery pack, when one of the batteries experiences thermal runaway, it will cause the temperature of other normal batteries to rise rapidly and fail to work normally, eventually triggering all the remaining batteries to catch fire.

[0003] In the related art, heat insulation materials are usually placed between two adjacent battery cells to reduce heat conduction between the battery cells. However, high-temperature smoke will accumulate in the battery module, and the high-temperature smoke in the battery module will still spread to the surrounding battery cells, thereby affecting other normal battery cells. The high-temperature smoke generated when the battery system is in thermal runaway cannot be discharged, which may cause the entire battery system to be in thermal runaway, reducing the safety of the battery system. Summary of the invention

[0004] The main purpose of the present invention is to provide a heat exchange device and a battery system, aiming to solve the technical problem that when the battery system is in thermal runaway, the high-temperature flue gas in the battery system will affect the surrounding battery cells, thereby causing thermal runaway of the entire battery system and reducing the safety of the battery system.

[0005] In order to achieve the above-mentioned object of the invention, a first aspect of the present invention provides a heat exchange device.

[0006] A heat exchange device for exchanging heat for a battery system, comprising:

[0007] First bulkhead;

[0008] a second separator, the second separator being arranged opposite to the first separator to form a receiving cavity, the receiving cavity being used to receive the battery cell stack; and

[0009] A heat exchange component, wherein the heat exchange component is disposed between the first partition plate and the second partition plate and divides the accommodating cavity into a first cavity and a second cavity;

[0010] The heat exchange assembly includes a first liquid cooling plate, a second liquid cooling plate and an exhaust plate, the first liquid cooling plate is attached to one side of the exhaust plate, the second liquid cooling plate is attached to the other side of the exhaust plate, a first exhaust channel is opened in the exhaust plate, and the first exhaust channel is used to communicate with the outside; a first exhaust hole is opened on the first liquid cooling plate, and the first exhaust hole is respectively connected to the first cavity and the first exhaust channel, and a second exhaust hole is opened on the second liquid cooling plate, and the second exhaust hole is respectively connected to the second cavity and the first exhaust channel.

[0011] In one embodiment, a plurality of first liquid cooling channels are arranged at intervals on the first liquid cooling plate, and the first exhaust hole is arranged between adjacent first liquid cooling channels;

[0012] A plurality of second liquid cooling channels are arranged at intervals on the second liquid cooling plate, and the second exhaust holes are arranged between adjacent second liquid cooling channels.

[0013] In one of the embodiments, a third liquid cooling channel is provided in the first baffle;

[0014] A fourth liquid cooling channel is arranged in the second partition plate.

[0015] In one embodiment, the heat exchange device includes a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is respectively connected to the first liquid cooling channel, the second liquid cooling channel, the third liquid cooling channel and the fourth liquid cooling channel, and the liquid outlet channel is respectively connected to the first liquid cooling channel, the second liquid cooling channel, the third liquid cooling channel and the fourth liquid cooling channel to form a liquid cooling closed loop.

[0016] A second aspect of the present invention provides a battery system, comprising a box, a battery cell stack and a heat exchange device as described in any one of claims 1 to 4, wherein the battery cell stack is arranged in the box, and the heat exchange device is provided in plurality, and the plurality of heat exchange devices are arranged in the box at intervals.

[0017] In one embodiment, a second exhaust channel is opened on a side wall of the box body away from the heat exchange device, a first port of the second exhaust channel is connected to the first exhaust channel, and a second port of the second exhaust channel is used to connect to the outside.

[0018] In one of the embodiments, the battery system further includes an explosion-proof valve, which is disposed on an outer side wall of the box away from the heat exchange device, and the explosion-proof valve is located at a second port of the second exhaust channel and seals the second port of the second exhaust channel.

[0019] In one embodiment, the battery system further includes a crossbeam and an electrical device, wherein the crossbeam is disposed in the box body, and the crossbeam divides the accommodating space in the box body into a first installation area and a second installation area, wherein the battery cell stack is installed in the first installation area, and the electrical device is installed in the second installation area.

[0020] In one embodiment, the crossbeam is a hollow structure, and an internal cavity of the crossbeam is connected to the first exhaust channel and the second exhaust channel.

[0021] In one embodiment, the battery system includes a pressure plate, a first connection portion is provided on the pressure plate, a second connection portion is provided on a first partition plate facing the pressure plate, a third connection portion is provided on a second partition plate facing the pressure plate, and a fourth connection portion is provided on a side of an exhaust plate facing the pressure plate, and the first connection portion is respectively connected to the second connection portion, the third connection portion and the fourth connection portion.

[0022] Beneficial effects:

[0023] In the heat exchange device of the present invention, the first partition and the second partition are arranged opposite to each other to form a accommodating chamber. The accommodating chamber is used to accommodate the battery cell stack. If the battery cell stack in this area has thermal runaway, the high-temperature flue gas generated by the battery cell stack will be in the accommodating chamber and will not affect other battery cell stacks. The heat exchange component is arranged between the first partition and the second partition, and divides the accommodating chamber into a first cavity and a second cavity. The high-temperature flue gas generated by the battery cell stack in the first cavity will enter the first exhaust channel through the first exhaust hole. The high-temperature flue gas generated by the battery cell stack in the second cavity will enter the first exhaust channel through the second exhaust hole. The high-temperature flue gas in the first cavity and the second cavity converges to the first exhaust channel and is discharged to the outside through the first exhaust channel, thereby realizing the directional discharge of the high-temperature flue gas. Even if the battery cell stack in it has thermal runaway, it will not affect the battery cell stack outside the accommodating chamber, thereby improving the safety of the entire battery system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of the structure of a battery system according to an embodiment of the present invention.

[0025] Figure 2 FIG. 1 is an exploded view of a battery system according to an embodiment of the present invention.

[0026] Figure 3 FIG. 1 is a partial structural diagram of a battery system according to an embodiment of the present invention.

[0027] Figure 4 FIG. 1 is a partial structural diagram of a battery system according to an embodiment of the present invention from another angle.

[0028] Figure 5 It is a schematic structural diagram of a heat exchange component according to an embodiment of the present invention.

[0029] Figure 6 It is a schematic structural diagram of a heat exchange component from another angle according to an embodiment of the present invention.

[0030] Figure 7 yes Figure 6 Cross-sectional view along the AA direction.

[0031] Figure 8 FIG. 1 is a top view of a battery system according to an embodiment of the present invention.

[0032] Fig. 9 yes Figure 8 Cross-sectional view along direction BB.

[0033] in:

[0034] 10. Heat exchange device;

[0035] 100, first partition; 110, second partition;

[0036] 200, heat exchange component; 210, first liquid cooling plate; 211, first exhaust hole; 212, first liquid cooling channel; 220, second liquid cooling plate; 221, second exhaust hole; 222, second liquid cooling channel; 230, exhaust plate; 231, first exhaust channel; 232, first through hole; 233, second through hole;

[0037] 310, liquid inlet channel; 320, liquid outlet channel;

[0038] 400, box body; 410, pressing plate; 420, cover plate; 430, crossbeam; 440, second exhaust channel;

[0039] 500. Battery cell stack;

[0040] 600, explosion-proof valve;

[0041] 700. Electrical components; 710. Liquid cooling components.

[0042] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0047] like Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, in some embodiments, a heat exchange device 10 includes a first partition 100, a second partition 110 and a heat exchange assembly 200. The second partition 110 is arranged opposite to the first partition 100 to form a receiving cavity. The receiving cavity is used to receive the battery cell stack 500. The heat exchange assembly 200 is arranged between the first partition 100 and the second partition 110, and divides the receiving cavity into a first cavity and a second cavity. The heat exchange assembly 200 includes a first liquid cooling plate 210, a second liquid cooling plate 220 and an exhaust plate 230, the first liquid cooling plate 210 is attached to one side of the exhaust plate 230, and the second liquid cooling plate 220 is attached to the other side of the exhaust plate 230. A first exhaust channel 231 is provided in the exhaust plate 230, and the first exhaust channel 231 is used to communicate with the outside. The first liquid cooling plate 210 is provided with a first exhaust hole 211 which is connected to the first cavity and the first exhaust channel 231 respectively. The second liquid cooling plate 220 is provided with a second exhaust hole 221 which is connected to the second cavity and the first exhaust channel 231 respectively.

[0048] It should be noted that the first partition 100 and the second partition 110 are arranged opposite to each other to form a accommodating cavity. The accommodating cavity is used to accommodate the battery cell stack 500. If the battery cell stack 500 in this area has thermal runaway, the high-temperature flue gas generated by the battery cell stack 500 will be in the accommodating cavity and will not affect other battery cell stacks 500. The heat exchange assembly 200 is arranged between the first partition 100 and the second partition 110, and divides the accommodating cavity into a first cavity and a second cavity. The high-temperature flue gas generated by the battery cell stack 500 in the first cavity will enter the first exhaust channel 231 through the first exhaust hole 211. The high-temperature flue gas generated by the battery cell stack 500 in the second cavity will enter the first exhaust channel 231 through the second exhaust hole 221. The high-temperature flue gas in the first cavity and the second cavity is collected in the first exhaust channel 231, and discharged to the outside through the first exhaust channel 231, thereby realizing the directional discharge of the high-temperature flue gas. Even if thermal runaway occurs in the battery cell stack 500 , it will not affect the battery cell stack 500 outside the accommodation cavity, thereby improving the safety of the entire battery system.

[0049] Specifically, a third liquid cooling channel is provided in the first partition 100. That is, the first partition 100 may be a liquid cooling plate. The first partition 100 is in contact with the battery cell stack 500. The heat generated by the battery cell stack 500 is conducted to the third liquid cooling channel, and the liquid cooling medium in the third liquid cooling channel takes away the heat, thereby reducing the temperature of the battery cell stack 500.

[0050] Specifically, the first separator 100 may be a profile structure. The first separator 100 may be a square structure.

[0051] In some embodiments, a fourth liquid cooling channel is provided in the second partition plate 110. That is, the second partition plate 110 may be a liquid cooling plate. The second partition plate 110 is in contact with the battery cell stack 500. The heat generated by the battery cell stack 500 is conducted to the fourth liquid cooling channel, and the liquid cooling medium in the fourth liquid cooling channel takes away the heat, thereby reducing the temperature of the battery cell stack 500.

[0052] Specifically, the second separator 110 is disposed in parallel with the first separator 100 .

[0053] Specifically, the second partition plate 110 may be a square structure. The accommodating cavity may be a square cavity.

[0054] Specifically, the second separator 110 and the first separator 100 have the same shape and size.

[0055] Specifically, the exhaust plate 230 may be a profile.

[0056] In some embodiments, a plurality of first liquid cooling channels 212 are disposed at intervals on the first liquid cooling plate 210 . The first exhaust holes 211 are disposed between adjacent first liquid cooling channels 212 .

[0057] Specifically, the first liquid-cooling channel 212 may be a linear structure. In other embodiments, the first liquid-cooling channel 212 may also be a curved structure.

[0058] Specifically, the first exhaust hole 211 may be a long strip-shaped hole.

[0059] Specifically, the first exhaust hole 211 can be set to be multiple. Multiple first exhaust holes 211 are arranged at intervals between two adjacent first liquid-cooling channels 212. Multiple first exhaust holes 211 are evenly distributed on the first liquid-cooling plate 210. In this way, the exhaust rate of high-temperature flue gas in the first cavity is increased, and the accumulation of high-temperature flue gas in the first cavity is avoided, which affects the heat exchange effect. Multiple first exhaust holes 211 can make the high-temperature flue gas in the first cavity discharge more smoothly, reduce the air pressure in the first cavity, and ensure the safety of the battery system.

[0060] like Figure 6 and Figure 7 As shown, in some embodiments, a plurality of second liquid cooling channels 222 are disposed at intervals on the second liquid cooling plate 220, and the second exhaust holes 221 are disposed between adjacent second liquid cooling channels 222. That is, the second liquid cooling plate 220 and the first liquid cooling plate 210 are clamped on both sides of the exhaust plate 230.

[0061] Specifically, the second liquid cooling plate 220 is arranged in parallel with the first liquid cooling plate 210. The second liquid cooling plate 220 has the same structure as the first liquid cooling plate 210, and will not be described in detail herein.

[0062] In some embodiments, a plurality of first through holes 232 are formed on one side of the exhaust plate 230 facing the first liquid cooling plate 210. The first through holes 232 are connected to the first exhaust channel 231 and the first exhaust holes 211, so that the gas in the first cavity can enter the first exhaust channel 231 through the first exhaust holes 211 and the first through holes 232 in sequence.

[0063] Specifically, the shape and size of the first through hole 232 are the same as those of the first exhaust hole 211 , so that the gas in the first cavity can flow smoothly into the first exhaust channel 231 .

[0064] Specifically, a plurality of first through holes 232 may be provided, and the plurality of first through holes 232 and the plurality of first exhaust holes 211 are provided in a one-to-one correspondence.

[0065] In some embodiments, a plurality of second through holes 233 are formed on one side of the exhaust plate 230 facing the second liquid cooling plate 220. The second through holes 233 are connected to the first exhaust channel 231 and the second exhaust holes 221, so that the gas in the second cavity can enter the first exhaust channel 231 through the second exhaust holes 221 and the second through holes 233 in sequence.

[0066] Specifically, the shape and size of the second through hole 233 are the same as those of the second exhaust hole 221 , so that the gas in the second cavity can flow smoothly into the first exhaust channel 231 .

[0067] Specifically, a plurality of second through holes 233 may be provided, and the plurality of second through holes 233 and the plurality of second exhaust holes 221 are provided in a one-to-one correspondence.

[0068] Specifically, along the width direction of the exhaust plate 230 , the first exhaust channel 231 may be divided into a plurality of cavities.

[0069] Specifically, the exhaust plate 230 may be a profile.

[0070] like Figure 3 and Figure 4 As shown, in some embodiments, the heat exchange device 10 includes a liquid inlet channel 310 and a liquid outlet channel 320. The liquid inlet channel 310 is respectively connected to the first liquid cooling channel 212, the second liquid cooling channel 222, the third liquid cooling channel and the fourth liquid cooling channel, and the liquid outlet channel 320 is respectively connected to the first liquid cooling channel 212, the second liquid cooling channel 222, the third liquid cooling channel and the fourth liquid cooling channel to form a liquid cooling closed loop.

[0071] It should be noted that in this closed loop, the coolant flows from the liquid inlet channel 310 into the first liquid cooling channel 212, the second liquid cooling channel 222, the third liquid cooling channel and the fourth liquid cooling channel, and after heat exchange with the battery cell stack 500, it flows out through the liquid outlet channel 320, continuously circulates, and continuously exchanges heat with the battery cell stack 500.

[0072] like Figure 1 and Figure 2 As shown, in another embodiment, a battery system includes a box body 400, a battery cell stack 500 and a heat exchange device 10, and the battery cell stack 500 is arranged in the box body 400. The heat exchange device 10 is provided in a plurality, and the plurality of heat exchange devices 10 are arranged in the box body 400 at intervals. The battery cell stack 500 can be provided in a plurality. The plurality of battery cell stacks 500 are arranged in a one-to-one correspondence with the plurality of heat exchange devices 10.

[0073] It should be noted that the arrangement of multiple heat exchange devices 10 greatly increases the heat dissipation area and heat dissipation capacity. Multiple battery cell stacks 500 generate a lot of heat during operation, and multiple heat exchange devices 10 can take away the heat more quickly and keep the multiple battery cell stacks 500 within a suitable operating temperature range.

[0074] like Figure 2 As shown, in some embodiments, the battery system includes a press plate 410. A first connection portion is provided on the press plate 410. A second connection portion is provided on the side of the first partition 100 facing the press plate 410. A third connection portion is provided on the side of the second partition 110 facing the press plate 410. A fourth connection portion is provided on the side of the exhaust plate 230 facing the press plate 410. The first connection portion is connected to the second connection portion, the third connection portion, and the fourth connection portion, respectively.

[0075] It should be noted that this connection method connects the pressing plate 410 with the first partition 100, the second partition 110 and the exhaust plate 230, which can fix the first partition 100, the second partition 110 and the exhaust plate 230. During operation, the battery system may be subjected to external forces such as vibration and impact. The pressing plate 410 can reduce the relative displacement between the first partition 100, the second partition 110 and the exhaust plate 230, ensuring the integrity and stability of the battery system. For the battery cell stack 500, the stable structure can avoid extrusion and friction between the battery cells, reduce safety risks, and extend the service life of the battery cells.

[0076] In some embodiments, the battery system further includes a cover plate 420 . The cover plate 420 is disposed on the top of the box body 400 , and the cover plate 420 is disposed on a side of the pressure plate 410 away from the exhaust plate 230 .

[0077] It should be noted that the cover plate 420 is placed on the top of the box body 400, providing a physical barrier for the battery system, which can effectively prevent the battery cell stack 500, the heat exchange device 10 and other components from being damaged by impact or extrusion by external objects. In addition, the cover plate 420 and the box body 400 are sealed to ensure that the battery system can maintain good sealing in various environments, thereby improving its reliability and stability.

[0078] like Figure 8 and Fig. 9 As shown, in some embodiments, a second exhaust channel 440 is provided on the side wall of the box body 400 away from the heat exchange device 10. The first port of the second exhaust channel 440 is communicated with the first exhaust channel 231, and the second port of the second exhaust channel 440 is used to communicate with the outside. The high-temperature flue gas of the first exhaust channel 231 can enter the first port and the second port of the second exhaust channel 440 in sequence, and be discharged to the outside from the second port.

[0079] Specifically, the battery system further includes an explosion-proof valve 600 , which is disposed on the outer wall of the box body 400 away from the heat exchange device 10 , and the explosion-proof valve 600 is located at the second port of the second exhaust channel 440 and seals the second port of the second exhaust channel 440 .

[0080] It should be noted that when the internal part of the battery system is working normally, the explosion-proof valve 600 is in a sealed state, which can prevent external air, moisture and impurities from entering the battery system. When thermal runaway occurs inside the battery system, the pressure inside the first cavity and the second cavity will rise sharply. When the air pressure in the first cavity and the second cavity reaches the preset threshold, the explosion-proof valve 600 will automatically open, and the gas in the first cavity and the second cavity can be discharged to the outside through the first exhaust channel 231 and the second exhaust channel 440, thereby reducing the air pressure in the first cavity and the second cavity to ensure the safety of the battery system.

[0081] In addition, the explosion-proof valve 600 is installed on the outer wall of the box 400 away from the heat exchange device 10 and is located at the second port of the second exhaust channel 440, which can ensure that the gas exhausted from the battery can be discharged to a safe area in a directional manner. This can prevent gas from accumulating around the battery and reduce potential safety hazards.

[0082] Specifically, the explosion-proof valve 600 can be set to multiple. Multiple explosion-proof valves 600 are spaced apart on the outer wall of the box body 400 away from the heat exchange device 10. When the pressure in the first cavity and the second cavity rises sharply, multiple explosion-proof valves 600 are opened at the same time, and a large amount of gas can be quickly discharged to ensure the safety of the battery system. In addition, if one of the explosion-proof valves 600 fails or fails to open normally, the other explosion-proof valves 600 can still be opened when the air pressure in the first cavity and the second cavity reaches a preset threshold, thereby reducing the air pressure in the first cavity and the second cavity, greatly reducing the risk of explosion due to failure of a single explosion-proof valve 600.

[0083] like Figure 2As shown, in some embodiments, the battery system further includes a crossbeam 430 and an electrical device 700. The crossbeam 430 is disposed in the box body 400, and the crossbeam 430 divides the accommodation space in the box body 400 into a first installation area and a second installation area, wherein the battery cell stack 500 is installed in the first installation area, and the electrical device 700 is installed in the second installation area, thereby achieving thermal and electrical separation.

[0084] It should be noted that separating the battery cell stack 500 and the electrical device 700 in different areas can reduce potential safety risks. For example, if thermal runaway occurs in the battery cell stack 500, the risk of thermal runaway of the electrical device 700 can be reduced.

[0085] like Figure 2 As shown, specifically, the battery system further includes a liquid cooling assembly 710. The liquid cooling assembly 710 is attached to the electrical device 700 to liquid cool the electrical device 700. The liquid cooling assembly 710 is provided with a fifth liquid cooling channel, which is connected to the liquid inlet channel 310 and the liquid outlet channel 320 respectively.

[0086] In some embodiments, the cross beam 430 is a hollow structure, and the internal cavity of the cross beam 430 is connected to the first exhaust channel 231 and the second exhaust channel 440 .

[0087] It should be noted that the hollow structure of the crossbeam 430 connects the first exhaust channel 231 and the second exhaust channel 440 to form a complete exhaust path. When the battery stack 500 has thermal runaway, the high-temperature flue gas can enter the internal cavity of the crossbeam 430 through the first exhaust channel 231 of the first installation area, and then quickly discharge the outside of the box 400 through the second exhaust channel 440, thereby realizing the directional discharge of the high-temperature flue gas. In addition, the separation of the crossbeam 430 makes the heat generated by the battery stack 500 mainly concentrated in the first installation area, reducing the heat conduction to the second installation area, thereby reducing the influence of the heat generated by the battery stack 500 on the electrical device 700, reducing the risk of the high-temperature flue gas generated by the battery stack 500 burning the electrical device 700, and further causing the battery system short circuit.

[0088] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heat exchange device for exchanging heat for a battery system, characterized in that: include: First bulkhead; A second separator, the second separator is arranged opposite to the first separator to form a receiving cavity, the receiving cavity is used to receive the battery cell stack; and A heat exchange component, wherein the heat exchange component is disposed between the first partition plate and the second partition plate and divides the accommodating cavity into a first cavity and a second cavity; The heat exchange assembly includes a first liquid cooling plate, a second liquid cooling plate and an exhaust plate, the first liquid cooling plate is attached to one side of the exhaust plate, the second liquid cooling plate is attached to the other side of the exhaust plate, a first exhaust channel is opened in the exhaust plate, and the first exhaust channel is used to communicate with the outside; a first exhaust hole is opened on the first liquid cooling plate, and the first exhaust hole is respectively connected to the first cavity and the first exhaust channel, and a second exhaust hole is opened on the second liquid cooling plate, and the second exhaust hole is respectively connected to the second cavity and the first exhaust channel.

2. The heat exchange device according to claim 1, characterized in that: A plurality of first liquid cooling channels are arranged at intervals on the first liquid cooling plate, and the first exhaust hole is arranged between adjacent first liquid cooling channels; A plurality of second liquid cooling channels are arranged at intervals on the second liquid cooling plate, and the second exhaust holes are arranged between adjacent second liquid cooling channels.

3. The heat exchange device according to claim 2, characterized in that: A third liquid cooling channel is provided in the first baffle; A fourth liquid cooling channel is arranged in the second partition plate.

4. The heat exchange device according to claim 3, characterized in that: The heat exchange device includes a liquid inlet channel and a liquid outlet channel, the liquid inlet channel is respectively connected to the first liquid cooling channel, the second liquid cooling channel, the third liquid cooling channel and the fourth liquid cooling channel, and the liquid outlet channel is respectively connected to the first liquid cooling channel, the second liquid cooling channel, the third liquid cooling channel and the fourth liquid cooling channel to form a liquid cooling closed loop.

5. A battery system, characterized in that: It comprises a box body, a battery cell stack and the heat exchange device according to any one of claims 1 to 4, wherein the battery cell stack is arranged in the box body, the heat exchange device is arranged in plurality, and the plurality of heat exchange devices are arranged in the box body at intervals.

6. The battery system according to claim 5, characterized in that: A second exhaust channel is formed on a side wall of the box body away from the heat exchange device. A first port of the second exhaust channel is communicated with the first exhaust channel. A second port of the second exhaust channel is used to communicate with the outside.

7. The battery system according to claim 6, characterized in that: The battery system further includes an explosion-proof valve, which is disposed on an outer side wall of the box away from the heat exchange device, and the explosion-proof valve is located at a second port of the second exhaust channel and seals the second port of the second exhaust channel.

8. The battery system according to claim 6, characterized in that: The battery system also includes a crossbeam and an electrical device. The crossbeam is arranged in the box body. The crossbeam divides the accommodating space in the box body into a first installation area and a second installation area. The first installation area is used to install the battery cell stack, and the second installation area is used to install the electrical device.

9. The battery system according to claim 8, characterized in that: The crossbeam is a hollow structure, and an internal cavity of the crossbeam is connected to the first exhaust channel and the second exhaust channel.

10. The battery system according to claim 5, characterized in that: The battery system includes a pressure plate, a first connection portion is provided on the pressure plate, a second connection portion is provided on a first partition plate on a side facing the pressure plate, a third connection portion is provided on a second partition plate on a side facing the pressure plate, and a fourth connection portion is provided on a exhaust plate on a side facing the pressure plate, and the first connection portion is respectively connected to the second connection portion, the third connection portion and the fourth connection portion.

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