Heat exchange device and battery system

Abstract

Disclosed in the present application are a heat exchange device and a battery system. The heat exchange device comprises first partition plates, second partition plates, and heat exchange assemblies, wherein each second partition plate is arranged opposite each first partition plate to form an accommodating cavity, which is configured to accommodate battery cell stacks; and each heat exchange assembly is arranged between one first partition plate and one second partition plate, and divides one accommodating cavity into a first cavity and a second cavity. Each heat exchange assembly comprises a first liquid cooling plate, a second liquid cooling plate, and a gas discharge plate, wherein the first liquid cooling plate is attached to one side of the gas discharge plate, and the second liquid cooling plate is attached to the other side of the gas discharge plate; a first gas discharge channel is formed in the gas discharge plate, and is configured to be in communication with the outside; first gas discharge holes are formed in the first liquid cooling plate, and are respectively in communication with one first cavity and the first gas discharge channel; and second gas discharge holes are formed in the second liquid cooling plate, and are respectively in communication with one second cavity and the first gas discharge channel. The heat exchange device can directionally discharge high-temperature off-gas, thereby improving the safety of the entire battery system.

Description

Heat exchange device and battery system

[0001] The present application claims priority to the Chinese patent application No. 2024113261662, filed on September 23, 2024, and entitled "Heat exchange device and battery system", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of battery equipment, in particular to a heat exchange device and a battery system. BACKGROUND

[0003] During use, when one of the battery cells in the battery pack experiences thermal runaway, the temperature of the other normal battery cells will rapidly rise and cannot work normally, eventually triggering the remaining battery cells to catch fire.

[0004] In related technologies, a heat insulation material is usually arranged between two adjacent battery cells to reduce heat conduction between the battery cells. However, high-temperature flue gas will accumulate in the battery module, and the high-temperature flue gas in the battery module will still spread to the surrounding battery cells, thereby affecting other normal battery cells. The high-temperature flue gas generated when the battery system experiences thermal runaway cannot be discharged, which may cause the entire battery system to experience thermal runaway, reducing the safety of the battery system. TECHNICAL PROBLEM

[0005] The present application aims to solve the technical problem that when the battery system experiences thermal runaway, the high-temperature flue gas in the battery system will affect the surrounding battery cells, thereby causing the entire battery system to experience thermal runaway and reducing the safety of the battery system. TECHNICAL SOLUTION

[0006] In order to achieve the above-mentioned application purposes, the present application proposes a heat exchange device in the first aspect.

[0007] A heat exchange device for heat exchange of a battery system, comprising:

[0008] a first partition plate;

[0009] a second partition plate, the second partition plate is arranged opposite to the first partition plate to form a containing cavity, the containing cavity is used for containing a battery cell stack; and

[0010] a heat exchange assembly, 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 and a second cavity;

[0011] 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, the second liquid cooling plate is attached to the other side of the exhaust plate, a first exhaust passage is formed in the exhaust plate, and the first exhaust passage is used for communication with the outside; a first exhaust hole is formed in the first liquid cooling plate, the first exhaust hole is in communication with the first cavity and the first exhaust passage respectively, and a second exhaust hole is formed in the second liquid cooling plate, the second exhaust hole is in communication with the second cavity and the first exhaust passage respectively.

[0012] In one of the embodiments, 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.

[0013] A plurality of second liquid cooling channels are arranged at intervals on the second liquid cooling plate, and the second exhaust hole is arranged between adjacent second liquid cooling channels.

[0014] In one of the embodiments, a third liquid cooling channel is arranged in the first partition plate.

[0015] A fourth liquid cooling channel is arranged in the second partition plate.

[0016] In one of the embodiments, the heat exchange device comprises an inlet liquid passage and an outlet liquid passage, the inlet liquid passage is in communication with the first liquid cooling channel, the second liquid cooling channel, the third liquid cooling channel and the fourth liquid cooling channel respectively, and the outlet liquid passage is in communication with the first liquid cooling channel, the second liquid cooling channel, the third liquid cooling channel and the fourth liquid cooling channel respectively, so as to form a liquid cooling closed loop.

[0017] The second aspect of the application provides a battery system, comprising a box body, a cell stack and the above-mentioned heat exchange device, the cell stack is arranged in the box body, and the heat exchange device is arranged in multiple, and multiple heat exchange devices are arranged at intervals in the box body.

[0018] In one of the embodiments, a second exhaust passage is formed in the side wall of the box body away from the heat exchange device, a first port of the second exhaust passage is in communication with the first exhaust passage, and a second port of the second exhaust passage is used for communication with the outside.

[0019] In one of the embodiments, the battery system further comprises an explosion-proof valve, the explosion-proof valve is arranged on the outer side wall of the box body away from the heat exchange device, and the explosion-proof valve is located at the second port of the second exhaust passage and seals the second port of the second exhaust passage.

[0020] In one of the embodiments, the battery system further comprises a beam and an electrical device, the beam is arranged in the box, the beam divides the accommodating space in the box into a first mounting area and a second mounting area, the first mounting area is arranged with the cell stack, and the second mounting area is arranged with the electrical device.

[0021] In one of the embodiments, the beam is a hollow structure, and the internal cavity of the beam is communicated with the first exhaust channel and the second exhaust channel.

[0022] In one of the embodiments, the battery system comprises a pressing plate, the pressing plate is arranged with a first connecting part, a first partition plate is arranged with a second connecting part on one side of the pressing plate, a second partition plate is arranged with a third connecting part on one side of the pressing plate, and an exhaust plate is arranged with a fourth connecting part on one side of the pressing plate, and the first connecting part is connected with the second connecting part, the third connecting part and the fourth connecting part respectively. Advantages

[0023] The heat exchange device of the present application, the first partition plate and the second partition plate are arranged oppositely to form an accommodating cavity. The accommodating cavity is used for accommodating the cell stack. If the cell stack in this area occurs thermal runaway, the high-temperature flue gas generated by the cell stack will be in the accommodating cavity, and will not affect other cell stacks. The heat exchange assembly is arranged between the first partition plate and the second partition plate, and divides the accommodating cavity into a first cavity and a second cavity. The high-temperature flue gas generated by the cell stack in the first cavity will pass through the first exhaust hole into the first exhaust channel. The high-temperature flue gas generated by the cell stack in the second cavity will pass through the second exhaust hole into the first exhaust channel. The high-temperature flue gas of the first cavity and the second cavity is collected to the first exhaust channel, and is discharged to the outside through the first exhaust channel, so as to realize the directional discharge of the high-temperature flue gas. Even if the cell stack in it occurs thermal runaway, it will not affect the cell stacks outside the accommodating cavity, thereby improving the safety of the whole battery system. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 is a structural schematic diagram of a battery system according to an embodiment of the present application.

[0025] Fig. 2 is an exploded view of a battery system according to an embodiment of the present application.

[0026] Fig. 3 is a partial structural diagram of a battery system according to an embodiment of the present application.

[0027] Fig. 4 is a partial structural diagram of a battery system according to an embodiment of the present application from another angle.

[0028] Fig. 5 is a structural schematic diagram of a heat exchange assembly according to an embodiment of the present application.

[0029] Fig. 6 is a structural schematic diagram of a heat exchange assembly according to an embodiment of the present application from another angle.

[0030] Fig. 7 is a sectional view of Fig. 6 along the direction of A-A.

[0031] Fig. 8 is a top view of the battery system of an embodiment of the present application.

[0032] Fig. 9 is a sectional view of Fig. 8 along the direction of B-B.

[0033] wherein:

[0034] 10, heat exchange device;

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

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

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

[0038] 400, box body; 410, pressing plate; 420, cover plate; 430, cross beam; 440, second exhaust passage;

[0039] 500, electric core stack;

[0040] 600, explosion-proof valve;

[0041] 700, electric device; 710, liquid cooling assembly.

[0042] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Best Mode for Carrying Out the Invention

[0043] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0044] It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It is further understood that the terms "comprise" (and any grammatical variations thereof, such as "comprises" and "comprising"), when used in this specification, specify the presence of stated features, integers, steps, operations, elements, components, and / or groups, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It is further understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can be present. In addition, the use of "connection" or "coupling" herein also includes wireless connection or wireless coupling. The term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0045] It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It is further understood that the terms "comprise" (and any grammatical variations thereof, such as "comprises" and "comprising"), when used in this specification, specify the presence of stated features, integers, steps, operations, elements, components, and / or groups, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It is further understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can be present. In addition, the use of "connection" or "coupling" herein also includes wireless connection or wireless coupling. The term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0046] As shown in FIGS. 1, 2, 5 and 6, in some embodiments, a heat exchange device 10 includes a first partition plate 100, a second partition plate 110 and a heat exchange assembly 200. The second partition plate 110 is arranged opposite to the first partition plate 100 to form a containing cavity. The containing cavity is used to contain a battery cell stack 500. The heat exchange assembly 200 is arranged between the first partition plate 100 and the second partition plate 110 and divides the containing 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. The exhaust plate 230 is provided with a first exhaust passage 231 therein, and the first exhaust passage 231 is used to communicate with the outside. The first liquid cooling plate 210 is provided with a first exhaust hole 211, and the first exhaust hole 211 respectively communicates with the first cavity and the first exhaust passage 231. The second liquid cooling plate 220 is provided with a second exhaust hole 221, and the second exhaust hole 221 respectively communicates with the second cavity and the first exhaust passage 231.

[0047] It should be noted that the first partition plate 100 and the second partition plate 110 are oppositely arranged to form a containing cavity. The containing cavity is used to contain the cell stack 500. If the cell stack 500 in this area has thermal runaway, the high-temperature flue gas generated by the cell stack 500 will be in the containing cavity and will not affect other cell stacks 500. The heat exchange assembly 200 is arranged between the first partition plate 100 and the second partition plate 110 and divides the containing cavity into a first cavity and a second cavity. The high-temperature flue gas generated by the cell stack 500 in the first cavity will pass through the first exhaust hole 211 into the first exhaust passage 231. The high-temperature flue gas generated by the cell stack 500 in the second cavity will pass through the second exhaust hole 221 into the first exhaust passage 231. The high-temperature flue gas of the first cavity and the second cavity is collected to the first exhaust passage 231 and discharged to the outside through the first exhaust passage 231, thereby realizing directional discharge of the high-temperature flue gas. Even if the cell stack 500 therein has thermal runaway, it will not affect the cell stack 500 outside the containing cavity, thereby improving the safety of the entire battery system.

[0048] Specifically, the first partition plate 100 is provided with a third liquid cooling flow channel. That is, the first partition plate 100 can be a liquid cooling plate. The first partition plate 100 is in contact with the cell stack 500. The heat generated by the cell stack 500 is conducted to the third liquid cooling flow channel, and the liquid cooling medium in the third liquid cooling flow channel carries away the heat, thereby reducing the temperature of the cell stack 500.

[0049] Specifically, the first partition plate 100 can be a profile structure. The first partition plate 100 can be a square structure.

[0050] In some embodiments, the second partition plate 110 is provided with a fourth liquid cooling flow channel. That is, the second partition plate 110 can be a liquid cooling plate. The second partition plate 110 is in contact with the cell stack 500. The heat generated by the cell stack 500 is conducted to the fourth liquid cooling flow channel, and the liquid cooling medium in the fourth liquid cooling flow channel carries away the heat, thereby reducing the temperature of the cell stack 500.

[0051] Specifically, the second partition plate 110 is arranged in parallel with the first partition plate 100.

[0052] Specifically, the second partition plate 110 can be a square structure. The containing cavity can be a square cavity.

[0053] Specifically, the second partition plate 110 and the first partition plate 100 are the same in shape and size.

[0054] Specifically, the exhaust plate 230 can be a profile.

[0055] In some embodiments, a plurality of first liquid cooling flow channels 212 are arranged on the first liquid cooling plate 210. The first exhaust hole 211 is arranged between adjacent first liquid cooling flow channels 212.

[0056] Specifically, the first liquid cooling flow channel 212 can be a straight line structure. In other embodiments, the first liquid cooling flow channel 212 can also be a curved line structure.

[0057] Specifically, the first exhaust hole 211 can be an elongated hole.

[0058] Specifically, the first exhaust hole 211 can be provided in multiple numbers. The multiple first exhaust holes 211 are arranged at intervals between two adjacent first liquid cooling flow channels 212. The multiple first exhaust holes 211 are uniformly arranged on the first liquid cooling plate 210. In this way, the exhaust rate of the high-temperature flue gas in the first cavity is improved, and the accumulation of the high-temperature flue gas in the first cavity is avoided, thereby affecting the heat exchange effect. The multiple first exhaust holes 211 can make the high-temperature flue gas in the first cavity be discharged more smoothly, reduce the air pressure in the first cavity, and ensure the safety of the battery system.

[0059] As shown in FIGS. 6 and 7, in some embodiments, multiple second liquid cooling flow channels 222 are arranged at intervals on the second liquid cooling plate 220, and the second exhaust hole 221 is arranged between two adjacent second liquid cooling flow 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.

[0060] 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, which will not be described here.

[0061] In some embodiments, the exhaust plate 230 is provided with multiple first through holes 232 on the side facing the first liquid cooling plate 210. The first through holes 232 are in communication with the first exhaust passage 231 and the first exhaust hole 211, so that the gas in the first cavity can flow into the first exhaust passage 231 through the first exhaust hole 211 and the first through hole 232 in sequence.

[0062] Specifically, the first through hole 232 has the same shape and size as the first exhaust hole 211, so that the gas in the first cavity can flow into the first exhaust passage 231 smoothly.

[0063] Specifically, the first through hole 232 can be provided in multiple numbers. The multiple first through holes 232 are arranged in one-to-one correspondence with the multiple first exhaust holes 211.

[0064] In some embodiments, the exhaust plate 230 is provided with multiple second through holes 233 on the side facing the second liquid cooling plate 220. The second through holes 233 are in communication with the first exhaust passage 231 and the second exhaust hole 221, so that the gas in the second cavity can flow into the first exhaust passage 231 through the second exhaust hole 221 and the second through hole 233 in sequence.

[0065] Specifically, the second through hole 233 is shaped and sized the same as the second exhaust hole 221, so that the gas in the second cavity can flow smoothly into the first exhaust passage 231.

[0066] Specifically, the second through hole 233 can be provided in multiple. The multiple second through holes 233 are provided one-to-one with the multiple second exhaust holes 221.

[0067] Specifically, along the width direction of the exhaust plate 230, the first exhaust passage 231 can be divided into multiple cavities.

[0068] Specifically, the exhaust plate 230 can be a profiled material.

[0069] As shown in FIG. 3 and FIG. 4, in some embodiments, the heat exchange device 10 includes an inlet passage 310 and an outlet passage 320. The inlet passage 310 is in communication with the first liquid cooling channel 212, the second liquid cooling channel 222, the third liquid cooling channel and the fourth liquid cooling channel, respectively, and the outlet passage 320 is in communication with the first liquid cooling channel 212, the second liquid cooling channel 222, the third liquid cooling channel and the fourth liquid cooling channel, respectively, so as to form a liquid cooling closed loop.

[0070] It should be noted that in this closed loop, the cooling liquid flows from the inlet passage 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, exchanges heat with the cell stack 500, and then flows out through the outlet passage 320, continuously circulating and flowing, continuously exchanging heat with the cell stack 500.

[0071] As shown in FIG. 1 and FIG. 2, in another embodiment, a battery system includes a box 400, a cell stack 500 and a heat exchange device 10, the cell stack 500 is arranged in the box 400. The heat exchange device 10 is provided in multiple, and the multiple heat exchange devices 10 are arranged in the box 400. The cell stack 500 can be provided in multiple. The multiple cell stacks 500 are arranged one-to-one with the multiple heat exchange devices 10.

[0072] It should be noted that the arrangement of multiple heat exchange devices 10 greatly increases the heat dissipation area and the heat dissipation capacity. The multiple cell stacks 500 will generate a large amount of heat during operation, and the multiple heat exchange devices 10 can quickly take away these heat, keeping the multiple cell stacks 500 within the appropriate operating temperature range.

[0073] As shown in FIG. 2, in some embodiments, the battery system includes a pressing plate 410. The pressing plate 410 is provided with a first connecting portion. The first partition plate 100 is provided with a second connecting portion on a side facing the pressing plate 410. The second partition plate 110 is provided with a third connecting portion on a side facing the pressing plate 410. The exhaust plate 230 is provided with a fourth connecting portion on a side facing the pressing plate 410. The first connecting portion is connected with the second connecting portion, the third connecting portion and the fourth connecting portion, respectively.

[0074] It should be noted that the connection mode connects the pressing plate 410 with the first partition plate 100, the second partition plate 110 and the exhaust plate 230 together, which can fix the first partition plate 100, the second partition plate 110 and the exhaust plate 230. During the working process of the battery system, 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 plate 100, the second partition plate 110 and the exhaust plate 230, and ensure the integrity and stability of the battery system. For the cell stack 500, the stable structure can avoid the extrusion and friction between the cells, reduce the safety risk, and prolong the service life of the cells.

[0075] In some embodiments, the battery system further includes a cover plate 420. The cover plate 420 is arranged on the top of the box body 400, and the cover plate 420 is arranged on a side of the pressing plate 410 away from the exhaust plate 230.

[0076] It should be noted that the cover plate 420 is arranged on the top of the box body 400, which provides a physical barrier for the battery system, and can effectively prevent the impact and extrusion of external objects from causing damage to the cell stack 500, the heat exchange device 10 and other components. In addition, the cover plate 420 is in sealed connection with the box body 400, which ensures that the battery system can maintain good sealing performance in various environments, and improves the reliability and stability of the battery system.

[0077] As shown in FIGS. 8 and 9, in some embodiments, the box body 400 is provided with a second exhaust passage 440 on a side wall away from the heat exchange device 10. A first port of the second exhaust passage 440 is in communication with the first exhaust passage 231, and a second port of the second exhaust passage 440 is used to communicate with the outside. The high-temperature flue gas of the first exhaust passage 231 can enter the first port and the second port of the second exhaust passage 440 in sequence, and be discharged to the outside from the second port.

[0078] Specifically, the battery system further includes an explosion-proof valve 600, which is arranged on the outer side wall of the box body 400 away from the heat exchange device 10, and the explosion-proof valve 600 is located at and seals the second port of the second exhaust passage 440.

[0079] It should be noted that when the battery system is normally working, the explosion-proof valve 600 is in a sealed state, which can prevent external air, moisture and impurities from entering the inside of 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 a 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 passage 231 and the second exhaust passage 440, thereby reducing the air pressure in the first cavity and the second cavity and ensuring the safety of the battery system.

[0080] In addition, the explosion-proof valve 600 is installed on the outer side wall of the box body 400 away from the heat exchange device 10 and is located at the second port of the second exhaust passage 440, which can ensure that the gas discharged from the inside of the battery can be discharged to the safety area in a directional manner. In this way, the accumulation of gas around the battery can be avoided, and potential safety hazards can be reduced.

[0081] Specifically, the explosion-proof valve 600 can be provided in multiple numbers. The multiple explosion-proof valves 600 are arranged at intervals on the outer side 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, the multiple explosion-proof valves 600 can be opened simultaneously to quickly discharge a large amount of gas and ensure the safety of the battery system. In addition, if one of the explosion-proof valves 600 fails or cannot be normally opened, the other explosion-proof valves 600 can still be opened when the air pressure in the first cavity and the second cavity reaches the preset threshold, thereby reducing the air pressure in the first cavity and the second cavity and greatly reducing the risk of explosion caused by failure of a single explosion-proof valve 600.

[0082] As shown in FIG. 2, in some embodiments, the battery system further includes a cross beam 430 and an electrical device 700. The cross beam 430 is arranged in the box body 400, and the cross beam 430 divides the containing space in the box body 400 into a first mounting area and a second mounting area. The first mounting area is used to mount the cell stack 500, and the second mounting area is used to mount the electrical device 700, so as to realize thermal-electric separation.

[0083] It should be noted that separating the cell stack 500 and the electrical device 700 in different areas can reduce potential safety risks. For example, if the cell stack 500 experiences thermal runaway, the risk of thermal runaway of the electrical device 700 can be reduced.

[0084] As shown in FIG. 2, specifically, the battery system further includes a liquid cooling assembly 710. The liquid cooling assembly 710 is attached to the electrical device 700 to perform liquid cooling on the electrical device 700. The liquid cooling assembly 710 is provided with a fifth liquid cooling flow channel, and the fifth liquid cooling flow channel is in communication with the liquid inlet passage 310 and the liquid outlet passage 320, respectively.

[0085] In some embodiments, the cross beam 430 has a hollow structure, and an internal cavity of the cross beam 430 is in communication with the first exhaust passage 231 and the second exhaust passage 440.

[0086] It should be noted that the hollow structure of the cross beam 430 communicates the first exhaust channel 231 and the second exhaust channel 440, forming a complete exhaust path. When the cell stack 500 occurs thermal runaway, high-temperature flue gas can enter the internal cavity of the cross beam 430 through the first exhaust channel 231 of the first mounting area, and then be quickly discharged to the outside of the box body 400 through the second exhaust channel 440, realizing the directional discharge of high-temperature flue gas. In addition, the partition of the cross beam 430 makes the heat generated by the cell stack 500 mainly concentrate in the first mounting area, reducing the heat conduction to the second mounting area, thereby reducing the influence of the heat generated by the cell stack 500 on the electrical device 700, reducing the risk of the electrical device 700 being burned by the high-temperature flue gas generated by the cell stack 500, and further reducing the risk of short circuit of the battery system.

[0087] It should be noted that in this document, the terms "comprise", "comprise", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, devices, articles or methods comprising a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such processes, devices, articles or methods. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of other identical elements in the process, device, article or method that includes the element.

[0088] The above description is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

A heat exchange device for exchanging heat with a battery system, wherein, The battery system comprises: a first partition plate; a second partition plate, which is arranged opposite to the first partition plate to form a containing cavity for containing an electric cell stack; a heat exchange assembly arranged between the first partition plate and the second partition plate and separating the containing cavity into a first cavity and a second cavity; 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, the second liquid cooling plate is attached to the other side of the exhaust plate, the exhaust plate is provided with a first exhaust passage for communicating with the outside, the first liquid cooling plate is provided with a first exhaust hole for communicating with the first cavity and the first exhaust passage respectively, and the second liquid cooling plate is provided with a second exhaust hole for communicating with the second cavity and the first exhaust passage respectively. A plurality of first liquid cooling channels are arranged on the first liquid cooling plate, and the first exhaust hole is arranged between adjacent first liquid cooling channels. The heat exchange device according to claim 1, wherein A plurality of second liquid cooling channels are arranged on the second liquid cooling plate, and the second exhaust hole is arranged between adjacent second liquid cooling channels. The first partition plate is provided with a third liquid cooling channel. The heat exchange device according to claim 2, wherein The second partition plate is provided with a fourth liquid cooling channel. The heat exchange device comprises an inlet passage and an outlet passage, the inlet passage communicates with the first liquid cooling channel, the second liquid cooling channel, the third liquid cooling channel and the fourth liquid cooling channel respectively, and the outlet passage communicates with the first liquid cooling channel, the second liquid cooling channel, the third liquid cooling channel and the fourth liquid cooling channel respectively to form a liquid cooling closed loop. The heat exchange device according to claim 3, wherein The battery system comprises a box, an electric cell stack and the heat exchange device of claim 1, the electric cell stack is arranged in the box, and a plurality of heat exchange devices are arranged in the box. A battery system, wherein, A second exhaust passage is arranged on the side wall of the box away from the heat exchange device, a first port of the second exhaust passage communicates with the first exhaust passage, and a second port of the second exhaust passage is used for communicating with the outside. The battery system of claim 5, wherein, The battery system further comprises an explosion-proof valve arranged on the outer side wall of the box away from the heat exchange device, and the explosion-proof valve is located at the second port of the second exhaust passage and seals the second port of the second exhaust passage. The battery system of claim 6, wherein The battery system further comprises a cross beam and an electrical device, the cross beam is arranged in the box, the cross beam separates the containing space in the box into a first mounting area and a second mounting area, the electric cell stack is mounted in the first mounting area, and the electrical device is mounted in the second mounting area. The battery system of claim 6, wherein, The cross beam is a hollow structure, and the internal cavity of the cross beam communicates with the first exhaust passage and the second exhaust passage. The battery system of claim 8, wherein ​ The battery system of claim 5, wherein, The battery system comprises a pressing plate, a first connecting part is arranged on the pressing plate, a second connecting part is arranged on one side of the first separator facing the pressing plate, a third connecting part is arranged on one side of the second separator facing the pressing plate, and a fourth connecting part is arranged on one side of the exhaust plate facing the pressing plate, and the first connecting part is connected with the second connecting part, the third connecting part and the fourth connecting part respectively. A battery system, wherein, The battery system comprises a box body, an electric core stack and the heat exchange device of claim 2, the electric core stack is arranged in the box body, and the heat exchange device is arranged in multiple numbers and is arranged in the box body in a spaced manner. The battery system of claim 11, wherein, A second exhaust passage is arranged on the side wall of the box body away from the heat exchange device, a first port of the second exhaust passage is communicated with the first exhaust passage, and a second port of the second exhaust passage is used for communicating with the outside. The battery system of claim 12, wherein, The battery system further comprises an explosion-proof valve, the explosion-proof valve is arranged on the outer side wall of the box body away from the heat exchange device, and the explosion-proof valve is located at the second port of the second exhaust passage and seals the second port of the second exhaust passage. The battery system of claim 12, wherein, The battery system further comprises a cross beam and an electric device, the cross beam is arranged in the box body, the cross beam divides the containing space in the box body into a first mounting area and a second mounting area, the first mounting area is arranged with the electric core stack, and the second mounting area is arranged with the electric device. The battery system of claim 14, wherein, The cross beam is a hollow structure, and the internal cavity of the cross beam is communicated with the first exhaust passage and the second exhaust passage. The battery system of claim 11, wherein, The battery system comprises a pressing plate, a first connecting part is arranged on the pressing plate, a second connecting part is arranged on one side of the first separator facing the pressing plate, a third connecting part is arranged on one side of the second separator facing the pressing plate, and a fourth connecting part is arranged on one side of the exhaust plate facing the pressing plate, and the first connecting part is connected with the second connecting part, the third connecting part and the fourth connecting part respectively. A battery system, wherein, The battery system comprises a box body, an electric core stack and the heat exchange device of claim 2, the electric core stack is arranged in the box body, and the heat exchange device is arranged in multiple numbers and is arranged in the box body in a spaced manner. The battery system of claim 17, wherein, A second exhaust passage is arranged on the side wall of the box body away from the heat exchange device, a first port of the second exhaust passage is communicated with the first exhaust passage, and a second port of the second exhaust passage is used for communicating with the outside. The battery system of claim 18, wherein, The battery system further comprises an explosion-proof valve, the explosion-proof valve is arranged on the outer side wall of the box body away from the heat exchange device, and the explosion-proof valve is located at the second port of the second exhaust passage and seals the second port of the second exhaust passage. The battery system of claim 18, wherein, The battery system further comprises a cross beam and an electric device, the cross beam is arranged in the box body, the cross beam divides the containing space in the box body into a first mounting area and a second mounting area, the first mounting area is arranged with the electric core stack, and the second mounting area is arranged with the electric device. The battery system of claim 20, wherein, The cross beam is a hollow structure, and the internal cavity of the cross beam is communicated with the first exhaust passage and the second exhaust passage. The battery system of claim 17, wherein, The battery system comprises a pressing plate, a first connecting part is arranged on the pressing plate, a second connecting part is arranged on one side of the first separator facing the pressing plate, a third connecting part is arranged on one side of the second separator facing the pressing plate, and a fourth connecting part is arranged on one side of the exhaust plate facing the pressing plate, and the first connecting part is connected with the second connecting part, the third connecting part and the fourth connecting part respectively. A battery system, wherein, The battery system comprises a box body, an electric core stack and the heat exchange device of claim 4, the electric core stack is arranged in the box body, and the heat exchange device is arranged in multiple numbers and is arranged in the box body in a spaced manner. The battery system of claim 23, wherein, A second exhaust passage is arranged on the side wall of the box body away from the heat exchange device, a first port of the second exhaust passage is communicated with the first exhaust passage, and a second port of the second exhaust passage is used for communicating with the outside. The battery system of claim 24, wherein, The battery system further comprises an explosion-proof valve, the explosion-proof valve is arranged on the outer side wall of the box body away from the heat exchange device, and the explosion-proof valve is located at the second port of the second exhaust passage and seals the second port of the second exhaust passage. The battery system of claim 24, wherein, The battery system further comprises a cross beam and an electric device, the cross beam is arranged in the box body, the cross beam divides the containing space in the box body into a first mounting area and a second mounting area, the electric core stack is mounted in the first mounting area, and the electric device is mounted in the second mounting area. The battery system of claim 26, wherein, The cross beam is a hollow structure, and the internal cavity of the cross beam is communicated with the first exhaust passage and the second exhaust passage. The battery system of claim 23, wherein, The battery system comprises a pressing plate, a first connecting part is arranged on the pressing plate, a second connecting part is arranged on one side of the first separator facing the pressing plate, a third connecting part is arranged on one side of the second separator facing the pressing plate, and a fourth connecting part is arranged on one side of the exhaust plate facing the pressing plate, and the first connecting part is connected with the second connecting part, the third connecting part and the fourth connecting part respectively.

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