Liquid cooling component, battery pack and electric device

Abstract

The application provides a liquid cooling piece, a battery pack and an electric equipment. The liquid cooling piece comprises a body, a liquid flow channel arranged in the body and used for accommodating a heat exchange medium, and an air flow channel arranged in the body and adjacent to the liquid flow channel and used for being communicated with an explosion-proof valve of a battery cell and guiding gas generated by the battery cell. The battery pack comprises the liquid cooling piece. The electric equipment comprises the battery pack. The application realizes the following effects: providing heat dissipation for the battery cell, reducing the temperature of the explosion spray gas generated by the thermal runaway of the battery cell, providing a certain accommodation space for the battery cell when the adjacent battery cell expands, protecting the battery cell, integrating the two kinds of channels in the liquid cooling piece, making the structure more compact and smaller, and enhancing the structural strength of the liquid cooling piece.

Description

Technical Field

[0001] This invention relates to the field of new energy technology, specifically to a liquid cooling component, a battery pack, and electrical equipment. Background Technology

[0002] Currently, with the continuous expansion of the application fields of power batteries, the market demand for them is also constantly increasing. During the use of batteries, the cells inside the battery pack generate heat, and the accumulation of heat will adversely affect the performance and lifespan of the battery pack.

[0003] In addition, battery pack safety is also a key research focus. Batteries can experience thermal runaway due to various unforeseen circumstances, leading to the rupture of the explosion-proof valve and the generation of large amounts of hot gas. How to handle these gases is also an important issue. If the hot gas is directly released to the outside of the vehicle without cooling, the high temperature of the gas, hundreds or even thousands of degrees Celsius, could potentially ignite the vehicle body, causing a safety accident.

[0004] Therefore, how to effectively dissipate heat from the cells within the battery pack while simultaneously dealing with the high-temperature gases generated by thermal runaway of the cells has become an urgent problem to be solved. Summary of the Invention

[0005] The purpose of this invention is to provide a liquid cooling component, a battery pack, and an electrical device, so as to reduce the temperature of the explosive gas generated by the thermal runaway of the battery cell while providing heat dissipation for the battery cell, and also to provide a certain amount of containment space for the battery cell to protect the battery cell when the adjacent battery cells expand. The liquid cooling component integrates channels with two functions, making the structure more compact and smaller in size, and enhancing the structural strength of the liquid cooling component.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A liquid cooling component is used for heat exchange of a battery cell and for dispersing gas generated by the battery cell, the liquid cooling component comprising:

[0008] ontology;

[0009] A liquid flow channel, located within the body, is used for the capacitive exchange of the heat medium;

[0010] An airflow channel is provided inside the body and adjacent to the liquid flow channel, for connecting with the explosion-proof valve of the battery cell and guiding the gas generated by the battery cell.

[0011] In some embodiments of the present invention, the body has a first direction and a second direction that are perpendicular to each other;

[0012] The main body is provided with a first liquid inlet, a first liquid outlet, an air inlet and a first air outlet. The first liquid inlet and the first liquid outlet are both connected to the liquid flow channel. The air inlet and the first air outlet are both connected to the air flow channel. The air inlet is used to connect to the explosion-proof valve of the battery cell.

[0013] The first liquid inlet and the first liquid outlet are respectively located at both ends of the body in the first direction, and the air inlet and the first air outlet are respectively located at both ends of the body in the second direction.

[0014] In some embodiments of the present invention, the body includes a first outer plate, an inner plate, and a second outer plate;

[0015] The inner plate is bent and located between the first outer plate and the second outer plate. The inner plate is fixedly connected to the first outer plate and encloses the airflow channel, and is disposed opposite to the second outer plate and encloses the liquid flow channel.

[0016] In some embodiments of the present invention, the body includes a first outer plate, a first inner plate, a second inner plate, and a second outer plate;

[0017] The first inner plate and the second inner plate are disposed between the first outer plate and the second outer plate, with the first inner plate being closer to the first outer plate and the second inner plate being closer to the second outer plate;

[0018] There is a gap between the first inner plate and the second inner plate, forming the airflow channel;

[0019] There are gaps between the first outer plate and the first inner plate, and between the second outer plate and the second inner plate, forming the liquid flow channel.

[0020] In some embodiments of the present invention, both the first inner plate and the second inner plate are bent.

[0021] The first inner plate is fixedly connected to the first outer plate, and / or the second inner plate is fixedly connected to the second outer plate.

[0022] In some embodiments of the present invention, both the first inner plate and the second inner plate have a cross-section in the first direction, and the cross-sections of the first inner plate and the second inner plate are serrated or wavy.

[0023] In some embodiments of the present invention, the body is a sleeve structure, including an outer cylinder, an inner cylinder and multiple air tubes;

[0024] The outer cylinder surrounds the inner cylinder, and each of the air pipes is disposed between the outer cylinder and the inner cylinder;

[0025] The outer cylinder and the inner cylinder enclose each other to form the liquid flow channel, and the inner cylinder encloses each other to form the air flow channel;

[0026] The airflow channel connects the air inlet and the first air outlet via the air pipe;

[0027] The outer cylinder has an opening at each end in the first direction, and the liquid flow channel is connected to the first liquid inlet and the first liquid outlet through the openings.

[0028] In some embodiments of the present invention, the liquid cooling component further includes a manifold;

[0029] The collector is provided with a second air outlet, and one of a second liquid inlet and a second liquid outlet, and also has a first inner cavity and a second inner cavity separated from each other.

[0030] The first inner cavity is connected to the second liquid inlet and the first liquid inlet, or connected to the second liquid outlet and the first liquid outlet;

[0031] The second inner cavity connects the second air outlet to the first air outlet.

[0032] In some embodiments of the present invention, the current collector includes two components, which are respectively connected to both ends of the body in the first direction;

[0033] The second liquid inlet is located on one of the collection components, and the second liquid outlet is located on the other collection component.

[0034] To achieve the above objectives, the present invention also provides the following technical solutions:

[0035] A battery pack comprising the liquid cooling component described above.

[0036] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0037] 1. The liquid cooling component provided by this invention has adjacent liquid flow channels and air flow channels in its body. The liquid flow channels are used to contain the heat exchange medium to provide heat dissipation for the battery cells adjacent to the liquid cooling component. The air flow channels are used to connect with the explosion-proof valve of the battery cell and to guide the gas ejected from the explosion-proof valve during thermal runaway. When the battery cell experiences thermal runaway and explosion, the generated high-temperature gas enters the air flow channel and is cooled down by the heat exchange medium in the liquid flow channel before being discharged outside the liquid cooling component. This prevents the high-temperature gas generated by a single battery cell from affecting other battery cells that are still in normal working condition, thus avoiding a chain reaction and ensuring the safety of battery packs, electrical equipment, and users using this liquid cooling component. Furthermore, because gas is compressible, the air flow channels can deform and compress to a certain extent when the battery cell expands, causing the entire liquid cooling component body to undergo adaptive deformation. This provides a certain amount of space to accommodate the expansion of the battery cell, reducing the external pressure and stress on the sidewalls of the battery cell and protecting it.

[0038] 2. The flow direction of the heat exchange medium in the body of the liquid cooling component provided by the present invention is perpendicular to the flow direction of the high-temperature gas, thereby increasing the contact time between the heat exchange medium and the high-temperature gas, thereby enhancing the heat dissipation and cooling effect of the liquid cooling component on the high-temperature gas, so that the temperature of the high-temperature gas can drop even lower after passing through the same path, further improving the safety of the overall battery pack and electrical equipment.

[0039] 3. The inner plate of the liquid cooling component provided by this invention is a bent plate. During the charging and discharging process of the battery cell, this design allows the liquid cooling component to adapt to a certain degree of elastic deformation, providing sufficient space to accommodate the expansion of adjacent battery cells and preventing excessive pressure on the sides of the cells, which could weaken their performance or even extend their lifespan. Furthermore, the bent plate structure, located inside the liquid cooling component, enhances its structural strength, preventing it from bending or even breaking due to external impacts, thus improving the durability of the liquid cooling component and the battery pack. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 An exploded view of the liquid cooling component provided in the first embodiment of the present invention;

[0042] Figure 2 A schematic diagram of the structure of the liquid cooling component body provided in the second embodiment of the present invention;

[0043] Figure 3 for Figure 1 A schematic diagram of the structure of the liquid cooling component body;

[0044] Figure 4 for Figure 1 An enlarged schematic diagram of the current collector in the circuit;

[0045] Figure 5 A schematic diagram of the structure of the liquid cooling component body provided in the third embodiment of the present invention;

[0046] Figure 6 This is an exploded view of the battery pack provided in the fourth embodiment of the present invention.

[0047] The main reference numerals in the accompanying drawings of this invention are explained as follows:

[0048] 1-Liquid cooling component; 11-Body; 1111-First outer plate; 1112-Second outer plate; 112-Inner plate; 1121-First inner plate; 1122-Second inner plate; 113-Outer cylinder; 114-Inner cylinder; 115-Gas pipe; 116-Opening; 12-Liquid flow channel; 13-Air flow channel; 141-First liquid inlet; 142-Second liquid inlet; 152-Second liquid outlet; 16-Air inlet; 171-First air outlet; 172-Second air outlet; 18-Collector; 181-First inner cavity; 182-Second inner cavity;

[0049] 2-Battery cell; 21-Side wall; 22-Explosion-proof valve;

[0050] 3-Outer shell;

[0051] 101 - First direction; 102 - Second direction;

[0052] 41 - Airflow direction; 42 - Liquid flow direction. Detailed Implementation

[0053] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] The present invention provides a liquid cooling component, a battery pack, and an electrical device, which are described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of the present invention. Furthermore, in the following embodiments, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0055] In the description of this invention, it should 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," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0060] In this embodiment of the invention, "parallel" refers to a state where the angle formed by two lines, a line and a surface, or a surface is -10° to 10°. "Perpendicular" refers to a state where the angle formed by two lines, a line and a surface, or a surface is 80° to 100°. Equal distances refer to a state where the tolerance range is -10% to 10%.

[0061] Example 1

[0062] like Figure 1 and Figure 6 As shown, in some embodiments of the present invention, a liquid cooling component 1 is used to exchange heat for a battery cell 2 and to guide the gas generated by the battery cell 2. The liquid cooling component 1 includes: a body 11; a liquid flow channel 12 disposed within the body 11 for containing the heat exchange medium; and an air flow channel 13 disposed within the body 11 and adjacent to the liquid flow channel 12 for connecting to the explosion-proof valve 22 of the battery cell 2 and guiding the gas from the battery cell 2. It can be understood that the present invention, by setting two adjacent channels, one channel for the heat exchange medium and the other channel for guiding high-temperature gas, enables the heat exchange medium to provide heat dissipation and cooling for adjacent battery cells, and also to provide heat dissipation and cooling for the high-temperature gas generated by the battery cell explosion in the event of thermal runaway. This prevents the thermal runaway of a few battery cells from affecting other battery cells in the battery pack and causing a severe chain reaction, thereby improving the reliability and safety of the battery pack and the electrical equipment using this type of battery pack, and providing reliable protection for user safety.

[0063] It is worth noting that the "adjacent arrangement" between the "liquid flow channel" and the "air flow channel" in this invention specification refers to a distance of 0.1-5mm in some embodiments, and more specifically, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 4mm, or 4.55mm. Of course, in other embodiments, the "adjacent arrangement" between the "liquid flow channel" and the "air flow channel" refers to a distance of 0.05-3mm, or 1-10mm, or 3-20mm. It can be understood that the distance between the air flow channel 13 and the liquid flow channel 12 is based on the premise that "the heat exchange medium in the liquid flow channel 12 can cool the gas in the air flow channel 13", and is also related to the inherent properties of the liquid cooling component 1, including its thermal conductivity.

[0064] It is worth noting that the liquid cooling component 1 body 11 integrates channels with two functions, significantly improving the structural compactness of the components within the battery pack. This efficient and compact design allows for a significant reduction in the battery pack volume, thereby significantly increasing the energy density of the battery pack. Furthermore, due to the compressibility of gas, when adjacent battery cells 2 expand, the airflow channel 13 of the liquid cooling component 1 can undergo a certain degree of elastic deformation, which in turn causes the entire body 11 to undergo a certain degree of elastic deformation. This provides a certain amount of space to accommodate the expansion of the battery cells 2, reducing the pressure and stress on the sidewalls 21 of the battery cells 2, thus protecting the battery cells 2. Moreover, the internal structure of the body 11 also gives it a certain structural strength, thus providing a certain degree of impact resistance.

[0065] It is understandable that the sidewall 21 of cell 2 can be as follows: Figure 6 The large surface area of ​​the square cell shown, or the small side or small surface area, can be the perimeter wall of a cylindrical battery, or the outer surface of a pouch battery.

[0066] Specifically, the body 11 can be made of a material with high thermal conductivity, such as copper and its alloys; the heat exchange medium can be water, ethylene glycol and mixtures thereof.

[0067] like Figure 1As shown, in some embodiments of the present invention, the body 11 has a first direction 101 and a second direction 102 that are perpendicular to each other; the body 11 is provided with a first liquid inlet 141, a first liquid outlet, an air inlet 16, and a first air outlet 171. The first liquid inlet 141 and the first liquid outlet are both connected to the liquid flow channel 12, and the air inlet 16 and the first air outlet 171 are both connected to the air flow channel 13. The air inlet 16 is used to connect to the explosion-proof valve 22 of the battery cell 2; the first liquid inlet 141 and the first liquid outlet are respectively located at both ends of the body 11 in the first direction 101, and the air inlet 16 and the first air outlet 171 are respectively located at both ends of the body 11 in the second direction 102. Through the above design, the present invention makes the flow direction of the heat exchange medium in the liquid cooling component 1 perpendicular to the flow direction of the high-temperature gas, so that the heat exchange medium can provide sufficient heat dissipation and cooling effect for the high-temperature gas.

[0068] like Figure 2 As shown, in some embodiments of the present invention, the body 11 includes a first outer plate 1111, an inner plate 112, and a second outer plate 1112; the inner plate 112 is bent and located between the first outer plate 1111 and the second outer plate 1112. The inner plate 112 is fixedly connected to the first outer plate 1111 and encloses the airflow channel 13, and is disposed opposite to the second outer plate 1112 and encloses the liquid flow channel 12. Specifically, as shown... Figure 2 As shown, the heat exchange medium flows in the liquid flow channel 12 along the first direction 101, and the high-temperature gas flows in the air flow channel 13 along the second direction 102. The heat of the high-temperature gas passes through the inner plate 112 and is carried away by the heat exchange medium. Figure 2 As shown, the bent inner plate 112 can be as follows: Figure 2 The bending plate shown, more specifically, can be a relatively "smooth" arc-shaped bending plate, thereby relieving the stress concentration caused by the impact of external forces on the body 11 of the liquid cooling component 1, so as to avoid the body 11 from breaking; or it can be a serrated bending plate composed of multiple continuous triangles to enhance the rigidity of the body 11, thereby improving the structural strength of the body 11.

[0069] It is worth noting that, such as Figure 2 As shown, airflow direction 41 refers to the flow direction of gas in body 11, and liquid flow direction 42 refers to the flow direction of heat exchange medium in body 11; in particular, for Figure 2 In this embodiment shown, the second outer plate 1112 is bent and extended at both ends in the second direction 102, and connected to the inner plate 112 at both ends in the second direction 102 (this part is in Figure 2(not shown in the image), so that the liquid flow channel 12 is closed and enclosed on both sides in the second direction 102, so as to ensure that the liquid flow direction 42 is perpendicular to the air flow direction 41, so as to ensure the cooling efficiency of the liquid cooling component 1 for the gas.

[0070] like Figure 3 As shown, in some embodiments of the present invention, the body 11 includes a first outer plate 1111, a first inner plate 1121, a second inner plate 1122, and a second outer plate 1112; the first inner plate 1121 and the second inner plate 1122 are disposed between the first outer plate 1111 and the second outer plate 1112, with the first inner plate 1121 close to the first outer plate 1111 and the second inner plate 1122 close to the second outer plate 1112; a gap exists between the first inner plate 1121 and the second inner plate 1122, forming the airflow channel 13; gaps also exist between the first outer plate 1111 and the first inner plate 1121, and between the second outer plate 1112 and the second inner plate 1122, forming the liquid flow channel 12. Specifically, as shown... Figure 2 As shown, high-temperature gas flows in the airflow channel 13 along the second direction 102.

[0071] like Figure 3 As shown, in some embodiments of the present invention, both the first inner plate 1121 and the second inner plate 1122 are bent; the first inner plate 1121 is fixedly connected to the first outer plate 1111, and / or the second inner plate 1122 is fixedly connected to the second outer plate 1112. It is understood that when each inner plate is fixedly connected to each outer plate, the structural strength of the liquid cooler 1 can be improved to a certain extent, exhibiting better compressive strength, impact resistance, and a certain elastic deformation coordination ability when the liquid cooler 1 is subjected to external impact or shaking; furthermore, when adjacent cells expand, the liquid cooler 1 can generate a certain elastic deformation to provide a certain accommodating space for cell expansion, thereby reducing the external compressive force on the cell sidewalls during expansion, thus protecting the cell's lifespan and performance.

[0072] In some embodiments of the present invention, the first outer plate 1111, the first inner plate 1121, the second inner plate 1122, and the second outer plate 1112 are all flat plates, which can also achieve the function of "enclosing the above-mentioned liquid flow channel 12 and air flow channel 13". In other embodiments of the present invention, a design scheme that combines flat and bent plate-shaped inner and outer plates can also be adopted, which can also achieve the above-mentioned function of "enclosing the above-mentioned liquid flow channel 12 and air flow channel 13".

[0073] In some embodiments of the present invention, the first inner plate 1121 and the second inner plate 1122 are partially bent plates, specifically meaning that a portion of the two types of inner plates is bent and the other portion is flat.

[0074] like Figure 2 and Figure 3 As shown, in some embodiments of the present invention, the inner plate 112, the first inner plate 1121, and the second inner plate 1122 all have cross-sections in the first direction 101, and the cross-sectional shapes of the inner plate 112, the first inner plate 1121, and the second inner plate 1122 are serrated or wavy. The serrated and wavy cross-sections allow each inner plate to exhibit certain compressive and impact resistance when subjected to external impact, preventing excessive deformation or even permanent failure of the two outer plates of the liquid cooling component body 11 due to strong impact. Furthermore, the serrated cross-sections form multiple triangles between the various inner and outer plates, and the triangular structure obviously has good stability; while the wavy cross-section structure is relatively gentler, avoiding stress concentration and dispersing the impact force more smoothly and evenly, thus preventing the liquid cooling component 1 from cracking under strong impact.

[0075] like Figure 5 As shown, in some embodiments of the present invention, the body 11 has a sleeve structure, including an outer cylinder 113, an inner cylinder 114, and a plurality of air pipes 115; the outer cylinder 113 surrounds the inner cylinder 114, and each of the air pipes 115 is disposed through the outer cylinder 113 and the inner cylinder 114; the outer cylinder 113 and the inner cylinder 114 enclose each other to form the liquid flow channel 12, and the inner cylinder 114 encloses each other to form the air flow channel 13; the air flow channel 13 is connected to the air inlet 16 and the first air outlet 171 via the air pipes 115; the outer cylinder 113 has an opening 116 at each end in the first direction 101, and the liquid flow channel 12 is connected to the first liquid inlet 141 and the first liquid outlet via the openings 116. It is worth noting that the aforementioned body 11 with a sleeve structure can be made of a soft, elastic material with high thermal conductivity. This elastic liquid cooling component 1 can be placed between the large surfaces of the matrix-arranged square battery cells, improving the heat dissipation and cooling effect of the cells. Furthermore, due to its elasticity, it can undergo elastic deformation when the battery cells expand, providing a certain space to accommodate the expansion and protrusion of the large surfaces of the battery cells, thus protecting the battery cells from excessive external pressure. Figure 4As shown, in some embodiments of the present invention, the liquid cooling component 1 further includes a manifold 18; the manifold 18 has a second air outlet 172 and a second liquid outlet 152, and also has a first inner cavity 181 and a second inner cavity 182 separated from each other, the first inner cavity 181 and the second inner cavity 182 being separated; the first inner cavity 181 of the manifold 18 connects the second liquid inlet 142 and the first liquid inlet 141, or connects the second liquid outlet 152 and the first liquid outlet; the second inner cavity 182 connects the second air outlet 172 and the first air outlet 171. Figure 1 As shown, the manifold 18 has a second liquid inlet 142, which can be connected to a liquid pump mechanism to pump heat exchange medium into the liquid flow channel 12 and promote the flow of heat exchange medium in the body 11, thereby improving heat exchange efficiency. It is understood that the second liquid outlet 152 can be connected to the aforementioned liquid pump mechanism to achieve circulating flow of the heat exchange medium and improve heat exchange efficiency. The first inner cavity 181 of the manifold 18 is used to collect the heat exchange medium and transport it to the liquid flow channel 12 within the body 11, or to receive the heat exchange medium leaving the liquid flow channel 12 and then transport it to the liquid cooling mechanism; the second inner cavity 182 of the manifold 18 is used to collect the gas cooled by the body 11 and transport it to the outside of the liquid cooling component 1, either directly to the outside of the battery pack or via a gas guiding structure.

[0076] like Figure 1 As shown, in some embodiments of the present invention, the manifold 18 includes two components, which are respectively connected to the two ends of the body 11 in the first direction 101. The second liquid inlet 142 is opened on one of the manifolds 18, and the second liquid outlet 152 is opened on the other manifold 18, so that the heat exchange medium can flow through the liquid cooler 1 along the first direction 101. Both manifolds 18 are provided with the air outlet 17; specifically, as shown... Figure 4 As shown, when the liquid cooling component 1 is placed vertically, the vent 17 is located below the current collector 18, allowing the gas discharged from the battery cell to pass through the liquid cooling component 1 along the second direction 102 and be cooled by heat dissipation. It is understood that the shape and size of the current collector 18 can be adjusted and selected according to actual conditions to adapt to battery packs with different design standards.

[0077] In some embodiments of the present invention, the spacing between the first inner plate 1121 and the second inner plate 1122 is equal at all points, making the structural design of the liquid cooling component 1 more efficient and compact, and improving the energy density of the battery pack and electrical equipment. Specifically, the distance between the first inner plate 1121 and the second inner plate 1122 is greater than 0.5 mm and less than 10 mm, and can be 0.75 mm, 1 mm, 3 mm, 5 mm, 1 mm, 7.5 mm, 8.55 mm or 9.25 mm.

[0078] In some embodiments of the present invention, the thickness of the body 11 of the liquid cooling component 1 in the first direction 101 is greater than 2.5 mm and less than 10 mm, specifically it can be 3 mm, 4 mm, 5 mm, 6 mm or 8 mm.

[0079] In some embodiments of the present invention, the radial dimension of the fluid channel 12 is greater than 0.5 mm and less than 10 mm, specifically it can be 0.75 mm, 1 mm, 3 mm, 5 mm, 1 mm, 7.5 mm, 8.55 mm or 9.25 mm.

[0080] In some embodiments of the present invention, the cross-sectional shape of the fluid channel 12 can be a polygon such as a triangle, a quadrilateral, or a pentagon.

[0081] Example 2

[0082] like Figure 6 As shown, in some embodiments of the present invention, a battery pack includes a liquid cooler 1 as described in Embodiment 1.

[0083] In some embodiments of the present invention, the battery pack further includes a housing 3, which encloses and forms a receiving cavity; and a plurality of battery cells 2, arranged in the receiving cavity, and having sidewalls 21 and explosion-proof valves 22. The sidewalls 21 of each battery cell 2 are arranged adjacent to the liquid cooling component 1 to obtain the heat dissipation and cooling effect of the liquid cooling component 1, and the explosion-proof valves 22 of the battery cells 2 are connected to or cooperate with the air inlet 16 of the liquid cooling component 1, so that the gas generated when the battery cell 2 undergoes thermal runaway explosion can flow into the airflow channel 13 of the body 11 of the liquid cooling component 1, thereby the liquid cooling component 1 plays the role of "providing heat dissipation and cooling for the battery cells" and "reducing the temperature of the gas emitted during thermal runaway explosion of the battery cells".

[0084] Example 3

[0085] An electrical device includes a battery pack as described in Example 2, specifically an electric vehicle.

[0086] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims. Furthermore, specific examples have been used in the specification to illustrate the principles and implementation methods of the present invention. The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention, and the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A liquid cooling member (1) for exchanging heat with an electric core (2) and for conducting gas generated by the electric core (2), characterized in that, The liquid cooling component (1) comprises: a body (11); a liquid flow channel (12) arranged in the body (11) and used for accommodating a heat exchange medium; an air flow channel (13) arranged in the body (11) and adjacent to the liquid flow channel (12) and used for being communicated with an explosion-proof valve (22) of the battery cell (2) and guiding the gas generated by the battery cell (2); the body (11) has a first direction (101) and a second direction (102) perpendicular to each other; the body (11) is provided with a first liquid inlet (141), a first liquid outlet, an air inlet (16) and a first air outlet (171), the first liquid inlet (141) and the first liquid outlet are both communicated with the liquid flow channel (12), the air inlet (16) and the first air outlet (171) are both communicated with the air flow channel (13), and the air inlet (16) is used for being communicated with the explosion-proof valve (22) of the battery cell (2); the first liquid inlet (141) and the first liquid outlet are respectively located at two ends of the body (11) in the first direction (101), and the air inlet (16) and the first air outlet (171) are respectively located at two ends of the body (11) in the second direction (102); the body (11) comprises a first outer plate (1111), an inner plate (112) and a second outer plate (1112); the inner plate (112) is in a bent shape and located between the first outer plate (1111) and the second outer plate (1112), the inner plate (112) is fixedly connected with the first outer plate (1111) and encloses the air flow channel (13), and is oppositely arranged with the second outer plate (1112) and encloses the liquid flow channel (12).

2. The liquid cooling element (1) according to claim 1, characterized in that the body (11) comprises a first outer plate (1111), a first inner plate (1121), a second inner plate (1122) and a second outer plate (1112); the first inner plate (1121) and the second inner plate (1122) are arranged between the first outer plate (1111) and the second outer plate (1112), the first inner plate (1121) is close to the first outer plate (1111), and the second inner plate (1122) is close to the second outer plate (1112); a gap is formed between the first inner plate (1121) and the second inner plate (1122) to form the air flow channel (13); a gap is formed between the first outer plate (1111) and the first inner plate (1121) and between the second outer plate (1112) and the second inner plate (1122) to form the liquid flow channel (12).

3. The liquid cooling element (1) according to claim 2, characterized in that the first inner plate (1121) and the second inner plate (1122) are both in a bent shape; the first inner plate (1121) is fixedly connected with the first outer plate (1111), and / or the second inner plate (1122) is fixedly connected with the second outer plate (1112).

4. The liquid cooling element (1) according to claim 3, characterized in that The first inner plate (1121) and the second inner plate (1122) each have a cross section in the first direction (101), and the cross sections of the first inner plate (1121) and the second inner plate (1122) are zigzag or wavy.

5. The liquid cooling element (1) according to claim 1, characterized in that The body (11) is in a sleeve structure, comprising an outer sleeve (113), an inner sleeve (114) and a plurality of air tubes (115); The outer sleeve (113) surrounds the inner sleeve (114), and each air tube (115) is arranged between the outer sleeve (113) and the inner sleeve (114); The liquid flow channel (12) is formed between the outer sleeve (113) and the inner sleeve (114), and the inner sleeve (114) forms the air flow channel (13); The air flow channel (13) communicates with the air inlet (16) and the first air outlet (171) through the air tube (115); The outer sleeve (113) has an opening (116) at each end in the first direction (101), and the liquid flow channel (12) communicates with the first liquid inlet (141) and the first liquid outlet through the opening (116).

6. The liquid cooling element (1) according to claim 1, characterized in that The liquid cooling device (1) further comprises a flow collecting member (18); The flow collecting member (18) is provided with a second air outlet (172), and is provided with one of a second liquid inlet (142) and a second liquid outlet (152), and further has a first inner cavity (181) and a second inner cavity (182) separated from each other; The first inner cavity (181) communicates the second liquid inlet (142) with the first liquid inlet (141), or communicates the second liquid outlet (152) with the first liquid outlet; The second inner cavity (182) communicates the second air outlet (172) with the first air outlet (171).

7. Liquid cooling element (1) according to claim 6, characterized in that The flow collecting member (18) comprises two, and is connected to the two ends of the body (11) in the first direction (101); The second liquid inlet (142) is provided on one of the flow collecting members (18), and the second liquid outlet (152) is provided on the other flow collecting member (18).

8. A battery pack, characterized by, The battery pack comprises the liquid cooling device (1) according to any one of claims 1-7.

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