Liquid cooling assembly and battery pack

Abstract

The embodiment of the utility model provides a liquid cooling assembly and a battery pack, and relates to the field of electric equipment. The liquid cooling assembly comprises a liquid cooling plate and a frame. A cavity for placing a battery monomer is defined by the frame, a first positioning part and a second positioning part which are separated by a first distance are arranged on the frame, and the first positioning part and the second positioning part are respectively positioned at a pair of opposite angles of the cavity. The liquid cooling plate is provided with a first mounting part corresponding to the first positioning part and a second mounting part corresponding to the second positioning part, and the first mounting part and the second mounting part are spaced by a second distance. The first mounting part is matched with the first positioning part, a mounting allowance exists between the second mounting part and the second positioning part, and the mounting allowance can complement the difference value between the first interval and the second interval, so that the second mounting part can be in butt joint with the second positioning part when the first mounting part is in butt joint with the first positioning part. According to the liquid cooling assembly and the battery pack, the liquid cooling plate is convenient to position and low in mounting difficulty.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of electrical equipment, and particularly to a liquid cooling component and a battery pack. Background Art

[0002] With the continuous development of electrical equipment such as electric vehicles and high-performance computing devices, the heat exchange system has also become an essential part of electrical equipment. Among them, liquid cooling technology has the advantages of high heat dissipation efficiency, precise temperature control, and compact space, and is one of the most commonly used heat exchange technologies.

[0003] In the current liquid cooling technology, the heat exchange part of the liquid cooling component is usually installed adjacent to the battery cells in the battery pack. A channel for the coolant to flow is provided in the heat exchange part of the liquid cooling component. During the flow of the coolant, heat is continuously exchanged with the battery cells, thereby cooling the battery pack.

[0004] In the current liquid cooling component, the heat exchange part of the liquid cooling component needs to be aligned with the battery cells to ensure the heat exchange effect. However, the installation position of the liquid cooling component is limited and positioning is difficult. It is often easy to cause the installation to be incomplete due to processing errors or interference from other components. Operators need to continuously adjust manually, and the installation difficulty is great. Therefore, how to reduce the installation difficulty of the liquid cooling component has become a technical problem to be solved. Utility Model Content

[0005] In view of the above problems, the embodiments of the present application provide a liquid cooling component. In this liquid cooling component, the first positioning part and the first installation part provide positioning for the alignment installation of the liquid cooling plate relative to the battery cells. Moreover, the installation allowance between the second installation part and the second positioning part can make up for the difference between the first distance and the second distance, thereby avoiding the situation where the liquid cooling plate is not installed in place and reducing the installation difficulty of the liquid cooling component. The embodiments of the present application also provide a battery pack applying this liquid cooling component.

[0006] According to one aspect of the embodiments of the present application, a liquid cooling component is provided. The liquid cooling component includes: a liquid cooling plate and a frame. The frame encloses a cavity for placing battery cells. The frame is provided with a first positioning part and a second positioning part separated by a first distance, and the first positioning part and the second positioning part are respectively located at a pair of diagonals of the cavity. The liquid cooling plate is provided with a first installation part corresponding to the first positioning part and a second installation part corresponding to the second positioning part, and the first installation part and the second installation part are separated by a second distance. The first installation part and the first positioning part are in agreement, and there is an installation allowance between the second installation part and the second positioning part. The installation allowance can make up for the difference between the first distance and the second distance, so that when the first installation part and the first positioning part are docked, the second installation part can be docked with the second positioning part.

[0007] The liquid cooling assembly provides a positioning reference for aligning and fixing the liquid cooling plate relative to the battery cell through the first positioning portion and the first mounting portion, and compensates for the difference between the first spacing and the second spacing through the mounting allowance between the second mounting portion and the second positioning portion, thereby offsetting the machining error, facilitating positioning and simplifying installation.

[0008] In a feasible manner, the liquid cooling assembly further includes a first positioning post. The first positioning portion includes a first positioning hole, and the first mounting portion includes a first mounting hole. The first positioning post is inserted into both the first positioning hole and the first mounting hole simultaneously to achieve the docking of the first mounting hole and the first positioning hole. The hole shapes and sizes of the first positioning hole and the first mounting hole are both in conformity with the shape and size of the outer contour of the first positioning post.

[0009] Both the first mounting portion and the first positioning portion are arranged as hole-shaped structures and are docked through the first positioning post, which is convenient for machining, easy to install, and the first positioning post is convenient for replacement.

[0010] In a feasible manner, the liquid cooling assembly further includes a second positioning post. The second positioning portion includes a second positioning hole, and the second mounting portion includes a second mounting hole. The second positioning post is inserted into both the second positioning hole and the second mounting hole simultaneously to achieve the docking of the second mounting hole and the second positioning hole.

[0011] Both the second mounting portion and the second positioning portion are arranged as hole-shaped structures and are docked through the second positioning post, which is convenient for machining, easy to install, and the second positioning post is convenient for replacement.

[0012] In a feasible manner, the second positioning hole and the second mounting hole are circular holes with different diameters, and the difference in diameters between the second positioning hole and the second mounting hole can compensate for the difference between the first spacing and the second spacing. The diameter of the second positioning post is matched to the smallest diameter among the second positioning hole and the second mounting hole.

[0013] By compensating for the difference between the first spacing and the second spacing through the difference in diameters between the second positioning hole and the second mounting hole, it is possible to ensure a certain assembly accuracy while retaining the mounting allowance, and ensure the firmness of the connection.

[0014] In a feasible manner, the second positioning hole and the second mounting hole are circular holes with the same diameter, the outer diameter of the second positioning post is smaller than the hole diameter, and the difference between the outer diameter of the second positioning post and the hole diameter can compensate for the difference between the first spacing and the second spacing.

[0015] By compensating for the difference between the first spacing and the second spacing through the difference between the outer diameter of the second positioning post and the hole diameters of the second positioning hole and the second mounting hole, it is possible to simplify the manufacturing process of each component, and the mounting allowance can be adjusted through second positioning posts of different specifications and sizes, making the assembly more convenient.

[0016] In a feasible manner, the second positioning hole is a circular hole, the second mounting hole is an oblong hole, the movable range of the second positioning post in the oblong hole can make up the difference between the first spacing and the second spacing, and the diameter of the second positioning post matches the aperture of the circular hole. Or, the second positioning hole is an oblong hole, the second mounting hole is a circular hole, the movable range of the second positioning post in the oblong hole can make up the difference between the first spacing and the second spacing, and the diameter of the second positioning post matches the aperture of the circular hole.

[0017] By making up the difference between the first spacing and the second spacing through the movable range of the second positioning post in the oblong hole, the range of the installation allowance can be set larger. At the same time, the fit between the oblong hole and the second positioning post is good, which can also ensure the assembly accuracy.

[0018] In a feasible manner, the first positioning part includes a first positioning hole, the first mounting part includes a first protruding part, and the first protruding part is inserted into the first positioning hole to achieve the docking of the first protruding part and the first positioning hole. The hole shape and size of the first positioning hole match the shape and size of the outer contour of the first protruding part. Or, the first positioning part includes a first protruding part, the first mounting part includes a first positioning hole, and the first positioning hole is inserted by the first protruding part to achieve the docking of the first positioning hole and the first protruding part. The hole shape and size of the first positioning hole match the shape and size of the outer contour of the first protruding part.

[0019] When one of the first mounting part and the first positioning part is set as a hole-shaped structure and the other is set as a convex structure, there is no need for additional parts to assist in docking. The first mounting part and the first positioning part can be directly aligned and installed. The installation steps are few and the installation process is simple.

[0020] In a feasible manner, the second positioning part includes a second positioning hole, the second mounting part includes a second protruding part, and the second protruding part is inserted into the second positioning hole to achieve the docking of the second protruding part and the second positioning hole. Or, the second positioning part includes a second protruding part, the second mounting part includes a second positioning hole, and the second positioning hole is inserted by the second protruding part to achieve the docking of the second positioning hole and the second protruding part.

[0021] When one of the second mounting part and the second positioning part is set as a hole-shaped structure and the other is set as a convex structure, there is no need for additional parts to assist in docking. The second mounting part and the second positioning part can be directly aligned and installed. The installation steps are few and the installation process is simple.

[0022] According to another aspect of the embodiments of the present application, a battery pack is provided, which includes battery cells, a liquid cooling plate, and a frame. The battery cells are placed in a cavity surrounded by the frame. The frame is provided with a first positioning portion and a second positioning portion separated by a first distance, and the first positioning portion and the second positioning portion are respectively located at a pair of diagonals of the cavity. The liquid cooling plate is provided with a first mounting portion corresponding to the first positioning portion and a second mounting portion corresponding to the second positioning portion, and the first mounting portion and the second mounting portion are separated by a second distance. The first mounting portion and the first positioning portion are in conformity with each other, and there is an installation allowance between the second mounting portion and the second positioning portion. The installation allowance can make up for the difference between the first distance and the second distance, so that when the first mounting portion and the first positioning portion are docked, the second mounting portion can be docked with the second positioning portion, making the liquid cooling plate face the battery cells directly.

[0023] In this kind of battery pack, the first positioning portion on the liquid cooling plate is in conformity with the first mounting portion on the frame, and there is an installation allowance between the second positioning portion on the liquid cooling plate and the second mounting portion on the frame. The positioning of the liquid cooling plate is convenient and the installation is simple, which can reduce the installation difficulty while aligning the liquid cooling plate with the battery cells.

[0024] In the liquid cooling component and the battery pack of the embodiments of the present application, the first positioning portion on the liquid cooling plate is in conformity with the first mounting portion on the frame, and there is an installation allowance between the second positioning portion on the liquid cooling plate and the second mounting portion on the frame. Thus, the first positioning portion and the first mounting portion provide a positioning reference for the liquid cooling plate, and at the same time, the installation allowance between the second mounting portion and the second positioning portion offsets the machining error. When installing the liquid cooling component, just align the first positioning portion with the first mounting portion for docking installation, and align the second positioning portion with the second mounting portion for docking installation, then the liquid cooling plate can be successfully aligned with the battery cells for fixation, avoiding the situation of the liquid cooling plate being not installed in place and reducing the installation difficulty of the liquid cooling component.

[0025] The above description is only an overview of the technical solutions of the embodiments of the present application. In order to be able to understand the technical means of the embodiments of the present application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the embodiments of the present application more obvious and understandable, the following specifically gives the specific implementation manners of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0027] Figure 1 It is a top view of the overall structure of the liquid cooling component provided by the embodiments of the present application.

[0028] Figure 2 It is a partial top view of the position where the first positioning portion of the liquid cooling component involved in the embodiment of the present application is located.

[0029] Figure 3 It is a partial top view of the position where the second positioning portion of the liquid cooling component involved in the embodiment of the present application is located.

[0030] Figure 4 It is a partial top view of the position where the first positioning portion of the liquid cooling component involved in the embodiment of the present application is located when the liquid cooling plate is hidden.

[0031] Figure 5 It is a partial top view of the position where the second positioning portion of the liquid cooling component involved in the embodiment of the present application is located when the liquid cooling plate is hidden.

[0032] Figure 6 It is a partial perspective view of the position where the second positioning portion of the liquid cooling component involved in the embodiment of the present application is located.

[0033] Reference numerals:

[0034] 10. Liquid cooling plate; 11. First mounting portion; 111. First mounting hole; 12. Second mounting portion; 121. Second mounting hole;

[0035] 20. Frame; 21. First positioning portion; 211. First positioning hole; 22. Second positioning portion; 221. Second positioning hole;

[0036] 30. Battery cell; 40. First positioning post; 50. Second positioning post. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0039] The terms "including" and "having" and any variations thereof in the description and claims of this application and the drawings are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the existence of a plurality.

[0040] As used herein, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the present application. The phrase "embodiment" appearing in various positions in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0041] As used herein, the term "and / or" is merely a description of the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the associated objects before and after are in an "or" relationship.

[0042] The directional terms appearing in the following descriptions are all the directions shown in the figures, and do not limit the specific structures of the liquid cooling component and the battery pack of the present application. For example, in the description of the present application, terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application 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 thus should not be construed as a limitation to the present application.

[0043] In addition, expressions indicating directions such as the X direction, Y direction, and Z direction used to illustrate the operations and structures of the components of the liquid cooling component and the battery pack of this embodiment are not absolute but relative. Although these indications are appropriate when the components of the liquid cooling component and the battery pack are in the positions shown in the figures, when these positions change, these directions should have different interpretations to correspond to the changes.

[0044] In addition, terms such as "first", "second", etc. in the specification and claims of the present application or in the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order, and may explicitly or implicitly include one or more of such features.

[0045] In the description of the present application, unless otherwise specified, the meaning of "a plurality" refers to two or more (including two). Similarly, "a plurality of groups" refers to two or more groups (including two groups).

[0046] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, the "connection" or "coupling" of mechanical structures can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection through a fixing member, such as a screw, bolt, or other fixing member; a physical connection can also be a detachable connection, such as a snap connection or a clamping connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. The "connection" or "coupling" of circuit structures can refer to not only a physical connection but also an electrical connection or a signal connection. For example, it can be a direct connection, that is, a physical connection, or it can be indirectly connected through at least one intermediate component, as long as the circuit is connected, and it can also be the communication inside two components; a signal connection can refer to not only a signal connection through a circuit but also a signal connection through a media medium, such as radio waves. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0047] The liquid cooling assembly provided by the present application is as Figure 1 , Figure 2 and Figure 3 shown. Figure 1 Figure Figure 2 is a top view of the overall structure of the liquid cooling assembly provided by the embodiment of the present application, Figure 3 is a partial top view of the position of the first positioning portion of the liquid cooling assembly involved in the embodiment of the present application,

[0048] is a partial top view of the position of the second positioning portion of the liquid cooling assembly involved in the embodiment of the present application. Among them, the liquid cooling assembly includes: a liquid cooling plate 10 and a frame 20.

[0049] The frame 20 is a frame structure that provides support and installation positions for components such as the liquid cooling plate 10, and the liquid cooling plate 10 is the heat exchange part in the liquid cooling assembly.

[0050] The frame 20 is provided with a positioning structure for the liquid cooling plate 10 and a structure for placing the battery cell 30 at the same time, so as to directly align the liquid cooling plate 10 with the battery cell 30 after installing the liquid cooling plate 10. Specifically, the frame 20 encloses a cavity for placing the battery cell 30, and the frame 20 is provided with a first positioning portion 21 and a second positioning portion 22 separated by a first distance.

[0051] The cavity surrounded by the frame 20 is a structure for installing the battery cell 30, and the cavity can also be set to a square, a circle, etc. according to the needs. The first positioning portion 21 and the second positioning portion 22 on the frame 20 are used to install the liquid cooling plate 10. The specific positions of the first positioning portion 21 and the second positioning portion 22 are set based on the position of the battery cell 30 in the cavity, and the purpose is to align the installed liquid cooling plate 10 with the battery cell 30.

[0052] In this embodiment, the first positioning portion 21 and the second positioning portion 22 are respectively located at a pair of diagonal portions of the cavity, thereby providing stable support for the liquid cooling plate 10 and ensuring the accuracy of positioning the liquid cooling plate 10. Figure 2 As shown in FIG. 1 , the second positioning portion 22 is located at the upper left corner of the cavity. Figure 3 Shown is located in the lower right corner of the cavity.

[0053] The liquid cooling plate 10 is made of a material with high thermal conductivity, such as aluminum alloy or copper alloy, to ensure good thermal conductivity. A flow channel for a coolant is provided inside the liquid cooling plate 10 to remove the heat generated by the battery cells 30 through the flowing coolant.

[0054] like Figure 2 and Figure 3 As shown, the liquid cooling plate 10 is provided with a first mounting portion 11 corresponding to the first positioning portion 21, and a second mounting portion 12 corresponding to the second positioning portion 22, and the first mounting portion 11 and the second mounting portion 12 are spaced apart by a second interval. The first positioning portion 21 corresponds to the structural shape of the first mounting portion 11, and the second positioning portion 22 corresponds to the structural shape of the second mounting portion 12, so that the first positioning portion 21 can be docked with the first mounting portion 11, and the second positioning portion 22 can be docked with the second mounting portion 12. In addition, the relative orientation of the first mounting portion 11 and the second mounting portion 12 is consistent with the relative orientation between the first positioning portion 21 and the second positioning portion 22, so that when the first mounting portion 11 is docked with the first positioning portion 21 and the second mounting portion 12 is docked with the second positioning portion 22, the liquid cooling plate 10 is just fixed at a position aligned with the battery cell 30, so that the liquid cooling plate 10 is installed in place.

[0055] In this embodiment, the first mounting portion 11 and the first positioning portion 21 are matched, and there is an installation margin between the second mounting portion 12 and the second positioning portion 22. The installation margin can make up for the difference between the first spacing and the second spacing, so that when the first mounting portion 11 and the first positioning portion 21 are docked, the second mounting portion 12 can be docked with the second positioning portion 22.

[0056] The coincidence of the first installation part 11 and the first positioning part 21 means that the structures, shapes and dimensions of the first installation part 11 and the first positioning part 21 are all matched and the fitting accuracy is relatively high. When the first installation part 11 is docked with the first positioning part 21, the first positioning part 21 and the first installation part 11 will no longer translate relative to each other. That is, the installed first installation part 11 forms an anchor point of the liquid cooling plate 10 relative to the frame 20, so as to position the installation of the liquid cooling plate 10.

[0057] The installation allowance provided between the second installation part 12 and the second positioning part 22 allows a certain position adjustment space between the second installation part 12 and the second positioning part 22, and the adjustable space can make up the difference between the first distance and the second distance. The first distance refers to the positioning distance between the first positioning part 21 and the second positioning part 22, and the second distance refers to the positioning distance between the first installation part 11 and the second installation part 12. Among them, the positioning distance can specifically be the minimum distance between two structures. When the first distance and the second distance are exactly the same, the first installation part 11 and the second installation part 12 just dock with the first positioning part 21 and the second positioning part 22 respectively.

[0058] When installing the liquid cooling plate 10, after the first installation part 11 is docked with the first positioning part 21, the first installation part 11 becomes a fixed point relative to the first positioning part 21. And there is an installation allowance between the second installation part 12 and the second positioning part 22. Even if there is a difference between the first distance and the second distance due to processing errors and other reasons, the second installation part 12 can still be docked with the second positioning part 22 and can ensure that the liquid cooling plate 10 is aligned with the battery cell 30, thus avoiding the situation that the liquid cooling component is not installed in place.

[0059] In this embodiment, there are many ways to set the structures of the first installation part 11 and the first positioning part 21. The following is an exemplary description of the ways to set the structures of the first installation part 11 and the first positioning part 21.

[0060] In the first way to set the structures of the first installation part 11 and the first positioning part 21, both the first installation part 11 and the first positioning part 21 can be set as holes, and they are relatively fixed by other shaft-like structures and the like.

[0061] The specific implementation method can refer to Figure 2 and Figure 4 , Figure 4This is a partial top view of the position of the first positioning portion when the liquid cooling plate is hidden in the liquid cooling component according to an embodiment of the present application. The liquid cooling component further includes a first positioning post 40. The first positioning portion 21 includes a first positioning hole 211, and the first mounting portion 11 includes a first mounting hole 111. The first positioning post 40 is inserted into both the first positioning hole 211 and the first mounting hole 111 to achieve the docking of the first mounting hole 111 and the first positioning hole 211. The hole shapes and sizes of the first positioning hole 211 and the first mounting hole 111 match the shape and size of the outer contour of the first positioning post 40.

[0062] In this implementation manner, both the first mounting portion 11 and the first positioning portion 21 are provided as hole-shaped structures and are docked through the first positioning post 40. It is convenient to process and install, and the first positioning post 40 is convenient to replace.

[0063] In the second structural setting manner of the first mounting portion 11 and the first positioning portion 21, one of the first mounting portion 11 and the first positioning portion 21 can be provided as a hole-shaped structure, and the other can be provided as a protruding structure such as a convex post or a convex platform, so as to achieve the matching docking of the two.

[0064] A specific implementation manner can be that the first positioning portion 21 includes a first positioning hole 211, and the first mounting portion 11 includes a first protruding portion. The first protruding portion is inserted into the first positioning hole 211 to achieve the docking of the first protruding portion and the first positioning hole 211. The hole shape and size of the first positioning hole 211 match the shape and size of the outer contour of the first protruding portion.

[0065] Or, the first positioning portion 21 includes a first protruding portion, and the first mounting portion 11 includes a first positioning hole 211. The first positioning hole 211 is inserted by the first protruding portion to achieve the docking of the first positioning hole 211 and the first protruding portion. The hole shape and size of the first positioning hole 211 match the shape and size of the outer contour of the first protruding portion.

[0066] In this implementation manner, when one of the first mounting portion 11 and the first positioning portion 21 is provided as a hole-shaped structure and the other is provided as a protruding structure, no additional components are required for auxiliary docking. The first mounting portion 11 and the first positioning portion 21 can be directly aligned and installed. The installation steps are few and the installation process is simple.

[0067] In addition, the structural setting manner of the first mounting portion 11 and the first positioning portion 21 can also be other structural setting manners, such as being set as a snap-fit structure, a riveting structure, etc., which are not limited here.

[0068] There are also many structural setting manners for the second mounting portion 12 and the second positioning portion 22. The structural setting manners of the second mounting portion 12 and the second positioning portion 22 are exemplarily described below.

[0069] In the first structural setting mode of the second mounting portion 12 and the second positioning portion 22, the second mounting portion 12 and the second positioning portion 22 can both be set as holes, and they are relatively fixed by an additional shaft-like structure.

[0070] For specific implementation manners, reference can be made to Figure 3 、 Figure 5 and Figure 6 , Figure 5 FIG. 11 is a partial top view of the position of the second positioning portion when the liquid cooling plate is hidden in the liquid cooling component according to the embodiment of the present application. Figure 6 FIG. 12 is a partial perspective view of the position of the second positioning portion of the liquid cooling component according to the embodiment of the present application. The liquid cooling component further includes a second positioning post 50. The second positioning portion 22 includes a second positioning hole 221, and the second mounting portion 12 includes a second mounting hole 121. The second positioning post 50 is inserted into both the second positioning hole 221 and the second mounting hole 121 at the same time to realize the docking of the second mounting hole 121 and the second positioning hole 221.

[0071] In this implementation manner, both the second mounting portion 12 and the second positioning portion 22 are set as hole-shaped structures and are docked by the second positioning post 50, which is convenient for processing and installation, and the second positioning post 50 is convenient for replacement.

[0072] In this implementation manner, there are also many setting methods for the installation allowance between the second mounting portion 12 and the second positioning portion 22. For example, in one setting method of the installation allowance, as shown in Figure 6 , the second positioning hole 221 and the second mounting hole 121 are circular holes with different diameters. The difference in diameter between the second positioning hole 221 and the second mounting hole 121 can make up for the difference between the first distance and the second distance, and the diameter of the second positioning post 50 matches the smallest diameter among the second positioning hole 221 and the second mounting hole 121.

[0073] Among them, the diameters of the second mounting hole 121 and the second positioning hole 221 are different, and the second positioning post 50 matches the hole with the smallest diameter. As shown in Figure 6As shown, when the aperture of the second positioning hole 221 is larger than that of the second mounting hole 121, the diameter of the second positioning post 50 matches the aperture of the second mounting hole 121. When the second positioning post 50 is inserted into both the second positioning hole 221 and the second mounting hole 121 simultaneously, the second positioning post 50 and the second mounting hole 121 are coaxial, and the second positioning post 50 cannot move radially relative to the second mounting hole 121. However, the aperture of the second positioning hole 221 is larger than the diameter of the second mounting hole 121, and the difference in aperture between the second positioning hole 221 and the second mounting hole 121 creates a radial clearance space between the second positioning hole 221 and the second positioning post 50. This clearance space ensures that the second mounting hole 121 and the second positioning hole 221 can surely be docked through the second positioning post 50 when the first mounting portion 11 and the first positioning portion 21 are docked, thereby compensating for the difference between the first spacing and the second spacing.

[0074] This method compensates for the difference between the first spacing and the second spacing through the difference in aperture between the second positioning hole 221 and the second mounting hole 121, which can ensure a certain assembly accuracy while retaining the mounting allowance, and guarantee the firmness of the connection.

[0075] In another way of setting the mounting allowance, the second positioning hole 221 and the second mounting hole 121 can be circular holes with the same aperture. The outer diameter of the second positioning post 50 is smaller than the aperture, and the difference between the outer diameter of the second positioning post 50 and the aperture can compensate for the difference between the first spacing and the second spacing.

[0076] In this method, the apertures of the second positioning hole 221 and the second mounting hole 121 are the same, and the outer diameter of the second positioning post 50 is smaller than the aperture. When the second positioning post 50 is inserted into both the second positioning hole 221 and the second mounting hole 121 simultaneously, the difference between the outer diameter of the second positioning post 50 and the aperture creates a misalignment space between the second positioning hole 221 and the second mounting hole 121, and this misalignment space can compensate for the difference between the first spacing and the second spacing.

[0077] This method compensates for the difference between the first spacing and the second spacing through the difference between the outer diameter of the second positioning post 50 and the apertures of the second positioning hole 221 and the second mounting hole 121, which can simplify the manufacturing process of each component, and can adjust the mounting allowance through the second positioning posts 50 with different specifications and sizes, making the assembly more convenient.

[0078] In another feasible way of setting the installation allowance, the second positioning hole 221 can also be a circular hole, the second installation hole 121 can be a waist-shaped hole, and the movable range of the second positioning post 50 in the waist-shaped hole can make up the difference between the first distance and the second distance. The diameter of the second positioning post 50 matches the aperture of the circular hole. Or, the second positioning hole 221 is a waist-shaped hole, the second installation hole 121 is a circular hole, the movable range of the second positioning post 50 in the waist-shaped hole can make up the difference between the first distance and the second distance, and the diameter of the second positioning post 50 matches the aperture of the circular hole.

[0079] In this way, one of the second positioning hole 221 and the second installation hole 121 is set as a circular hole, and the other is set as a waist-shaped hole, and the diameter of the second positioning post 50 matches the aperture of the circular hole. After the second positioning post 50 is inserted into the circular hole and the waist-shaped hole at the same time, the second positioning post 50 is coaxial with the circular hole and cannot move radially relative to the circular hole, but there is a radial allowance space between the second positioning post 50 and the waist-shaped hole. This allowance space is the movable range of the second positioning post 50 in the waist-shaped hole, which can ensure that the second installation hole 121 and the second positioning post 50 can surely be docked when the first installation part 11 and the first positioning part 21 are docked, so as to make up the difference between the first distance and the second distance.

[0080] There are many specific ways to set the waist-shaped hole. For example, the width of the waist-shaped hole can be the same as the diameter of the circular hole, or the width of the waist-shaped hole can also be greater than the diameter of the circular hole. The length of the waist-shaped hole is greater than the width of the waist-shaped hole, and the length of the waist-shaped hole is greater than the diameter of the circular hole. The length direction of the waist-shaped hole can be the same as or have a certain included angle with the relative direction between the second positioning hole 221 and the first positioning hole 211. Or, the length direction of the waist-shaped hole can also be the same as or have a certain included angle with the relative direction between the second installation hole 121 and the first installation hole 111. The waist length of the waist-shaped hole is used to make up the difference between the first distance and the second distance. In this way, the difference between the first distance and the second distance is made up by the movable range of the second positioning post 50 in the waist-shaped hole, and the range of the installation allowance can be set larger. At the same time, the cooperation degree between the waist-shaped hole and the second positioning post 50 is good, and the assembly accuracy can also be ensured.

[0081] In the second structural setting method of the second installation part 12 and the second positioning part 22, one of the second installation part 12 and the second positioning part 22 can be set as a hole-type structure, and the other can be set as a convex structure such as a convex post or a convex platform, so as to realize the matching docking of the two.

[0082] The specific implementation method can be that the second positioning part 22 includes a second positioning hole 221, the second installation part 12 includes a second protruding part, and the second protruding part is inserted into the second positioning hole 221 to realize the docking of the second protruding part and the second positioning hole 221.

[0083] Or, the second positioning part 22 includes a second protruding part, the second mounting part 12 includes a second positioning hole 221, and the second protruding part is inserted into the second positioning hole 221 to achieve the docking of the second positioning hole 221 and the second protruding part.

[0084] In this embodiment, one of the second mounting part 12 and the second positioning part 22 is set as a hole-type structure, and the other is set as a convex structure. Without the assistance of additional components for docking, the second mounting part 12 and the second positioning part 22 can be directly aligned and installed. The installation steps are few and the installation process is simple.

[0085] Moreover, in this embodiment, the outer contour dimension of the second protruding part can be made smaller than the aperture dimension of the second positioning hole 221, so that after the second protruding part is inserted into the second positioning hole 221, there is a radial margin space between the second protruding part and the second positioning hole 221, thereby compensating for the difference between the first spacing and the second spacing.

[0086] In addition, the structural setting method of the second mounting part 12 and the second positioning part 22 can also be other structural setting methods, such as being set as a snap-fit structure, a riveting structure, etc., which are not limited herein.

[0087] In the above examples, other components can also be provided on the first mounting part 11, the second mounting part 12, the first positioning part 21, and the second positioning part 22, such as structures like support frames and beams, which are not limited herein.

[0088] The first embodiment above details the liquid cooling component. The following second embodiment introduces a battery pack including the liquid cooling component of the above first embodiment.

[0089] The battery pack includes battery cells, a liquid cooling plate, and a frame. The battery cells are placed in the cavity surrounded by the frame. The frame is provided with a first positioning part and a second positioning part separated by a first spacing, and the first positioning part and the second positioning part are respectively located at a pair of diagonal corners of the cavity. The liquid cooling plate is provided with a first mounting part corresponding to the first positioning part and a second mounting part corresponding to the second positioning part, and the first mounting part and the second mounting part are separated by a second spacing. The first mounting part and the first positioning part match each other, and there is an installation margin between the second mounting part and the second positioning part. The installation margin can compensate for the difference between the first spacing and the second spacing, so that when the first mounting part and the first positioning part are docked, the second mounting part can be docked with the second positioning part, making the liquid cooling plate face the battery cells directly.

[0090] The above battery cells can be multiple and placed in the cavity surrounded by the frame. The multiple battery cells can be electrically connected in series, in parallel, or in a hybrid manner of series and parallel, and communicate with the battery management system to form a battery pack. The above battery management system controls and monitors the working states of the respective battery cells. In addition, multiple battery cells can also be first connected in series and / or in parallel, and form a battery module with the module management system, and then multiple battery modules are electrically connected in series, in parallel, or in a hybrid manner of series and parallel, and together with the battery management system constitute a battery pack.

[0091] The liquid cooling plate and the frame form a liquid cooling assembly. The structures of the liquid cooling plate and the frame specifically correspond to those of the liquid cooling plate and the frame in the first embodiment. For the relevant introductions of the liquid cooling plate and the frame of the liquid cooling assembly in the first embodiment, please refer to the first embodiment. Similarities will not be elaborated in this embodiment.

[0092] In this kind of battery pack, the first positioning portion on the liquid cooling plate coincides with the first mounting portion on the frame, and there is an installation allowance between the second positioning portion on the liquid cooling plate and the second mounting portion on the frame. The positioning of the liquid cooling plate is convenient and the installation is simple, which can align the liquid cooling plate with the battery cell while reducing the installation difficulty.

[0093] In summary, in the above-described liquid cooling assembly and battery pack, the first positioning portion on the liquid cooling plate coincides with the first mounting portion on the frame, and there is an installation allowance between the second positioning portion on the liquid cooling plate and the second mounting portion on the frame. Thus, the first positioning portion and the first mounting portion provide a positioning reference for the liquid cooling plate, and at the same time, the installation allowance between the second mounting portion and the second positioning portion offsets the processing error. When installing the liquid cooling assembly, only need to align the first positioning portion with the first mounting portion for docking installation, and align the second positioning portion with the second mounting portion for docking installation, then the liquid cooling plate can be smoothly aligned with the battery cell for fixation, avoiding the situation of improper installation of the liquid cooling plate and reducing the installation difficulty of the liquid cooling assembly.

[0094] Those skilled in the art can understand that although some embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present application and forms different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0095] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present application.

Claims

1. A liquid cooling component, characterized in that, The liquid cooling component includes: a liquid cooling plate and a frame; The frame encloses a cavity for placing battery cells, and the frame is provided with a first positioning portion and a second positioning portion spaced apart by a first distance; the first positioning portion and the second positioning portion are respectively located at a pair of diagonals of the cavity; The liquid cooling plate is provided with a first mounting portion corresponding to the first positioning portion and a second mounting portion corresponding to the second positioning portion, and the first mounting portion and the second mounting portion are spaced apart by a second distance; The first mounting portion and the first positioning portion are in conformity; there is an installation allowance between the second mounting portion and the second positioning portion, and the installation allowance can make up for the difference between the first distance and the second distance, so that when the first mounting portion and the first positioning portion are docked, the second mounting portion can be docked with the second positioning portion.

2. The liquid cooling component according to claim 1, wherein The liquid cooling component further includes a first positioning post; the first positioning portion includes a first positioning hole, and the first mounting portion includes a first mounting hole; The first positioning post is inserted into the first positioning hole and the first mounting hole at the same time to realize the docking of the first mounting hole and the first positioning hole; the hole shape and size of the first positioning hole and the first mounting hole are in conformity with the shape and size of the outer contour of the first positioning post.

3. The liquid cooling component according to claim 1, wherein The liquid cooling component further includes a second positioning post; The second positioning portion includes a second positioning hole, and the second mounting portion includes a second mounting hole; the second positioning post is inserted into the second positioning hole and the second mounting hole at the same time to realize the docking of the second mounting hole and the second positioning hole.

4. The liquid cooling component according to claim 3, wherein The second positioning hole and the second mounting hole are circular holes with different diameters; the difference in diameter between the second positioning hole and the second mounting hole can make up for the difference between the first distance and the second distance; the diameter of the second positioning post matches the smallest diameter of the second positioning hole and the second mounting hole.

5. The liquid cooling component according to claim 3, characterized in that, The second positioning hole and the second mounting hole are circular holes with the same diameter; the outer diameter of the second positioning post is smaller than the diameter of the hole, and the difference between the outer diameter of the second positioning post and the diameter of the hole can make up for the difference between the first distance and the second distance.

6. The liquid cooling component according to claim 3, characterized in that, The second positioning hole is a circular hole, and the second mounting hole is a waist-shaped hole; the movable range of the second positioning post in the waist-shaped hole can make up for the difference between the first distance and the second distance; the diameter of the second positioning post matches the diameter of the circular hole; Or, the second positioning hole is a waist-shaped hole, and the second mounting hole is a circular hole; the movable range of the second positioning post in the waist-shaped hole can make up for the difference between the first distance and the second distance; the diameter of the second positioning post matches the diameter of the circular hole.

7. The liquid cooling component according to claim 1, wherein The first positioning portion includes a first positioning hole, and the first mounting portion includes a first protruding portion; the first protruding portion is inserted into the first positioning hole to realize the docking of the first protruding portion and the first positioning hole; the hole shape and shape of the first positioning hole are in conformity with the shape and size of the outer contour of the first protruding portion; Alternatively, the first positioning portion includes a first protruding portion, and the first mounting portion includes a first positioning hole; the first protruding portion is inserted into the first positioning hole to achieve the docking of the first positioning hole and the first protruding portion; the hole shape and size of the first positioning hole match the shape and size of the outer contour of the first protruding portion.

8. The liquid cooling component according to claim 1, wherein, The second positioning portion includes a second positioning hole, and the second mounting portion includes a second protruding portion; the second protruding portion is inserted into the second positioning hole to achieve the docking of the second protruding portion and the second positioning hole. Alternatively, the second positioning portion includes a second protruding portion, and the second mounting portion includes a second positioning hole; the second positioning hole is inserted by the second protruding portion to achieve the docking of the second positioning hole and the second protruding portion.

9. A battery pack, characterized in that, The battery pack includes battery cells, a liquid cooling plate, and a frame. The battery cells are placed in the cavity surrounded by the frame; the frame is provided with a first positioning portion and a second positioning portion spaced apart by a first distance; the first positioning portion and the second positioning portion are respectively located at a pair of diagonals of the cavity. The liquid cooling plate is provided with a first mounting portion corresponding to the first positioning portion and a second mounting portion corresponding to the second positioning portion, and the first mounting portion and the second mounting portion are spaced apart by a second distance. The first mounting portion and the first positioning portion match; there is an installation allowance between the second mounting portion and the second positioning portion, and the installation allowance can make up for the difference between the first distance and the second distance, so that when the first mounting portion and the first positioning portion are docked, the second mounting portion can be docked with the second positioning portion, making the liquid cooling plate face the battery cells directly.

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