Liquid cooling plate and battery pack

Abstract

The utility model provides a liquid cooling plate and battery pack, liquid cooling plate includes a plurality of shells, connecting piece and liquid cooling pipeline, each shell is equipped with the channel inside, connecting piece is connected with the plurality of shells to make the plurality of shells fixed together, the channels of two adjacent shells are communicated, the liquid cooling pipeline passes through the channel, and the liquid cooling pipeline passes through the channel. The liquid cooling pipeline is used for circulating the cooling liquid, so that the heat of the battery cell can be transferred to the cooling liquid in the liquid cooling pipeline through the shell and is discharged through the cooling liquid, and the heat dissipation and cooling of the battery cell are realized. Wherein the connecting pieces are detachably connected with the shells, so that a user can adjust the number of the shells and the shape formed by splicing the shells according to the specifications of the battery packs, and the liquid cooling plate can adapt to the battery packs of different specifications; and the liquid cooling pipeline is arranged to circulate the cooling liquid, so that the sealing performance of the liquid cooling pipeline can be ensured, and the problem of cooling liquid leakage of the liquid cooling plate is avoided.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular to a liquid cooling plate and a battery pack. Background Technology

[0002] The battery pack includes a liquid cooling plate and battery cells. The liquid cooling plate is attached to the bottom surface of the battery cells to dissipate heat and cool them. However, in existing battery packs, the liquid cooling plate is an integrated structure, which makes it unsuitable for battery packs of different sizes. Utility Model Content

[0003] The purpose of this invention is to solve the problem that liquid cooling plates in existing battery packs cannot be adapted to battery packs of different specifications.

[0004] To solve the above-mentioned technical problems, this utility model provides a liquid-cooled plate, including multiple shells, at least one connector, and liquid-cooled pipes; each shell has a channel inside, the channel extending to the edge of the shell and opening; any adjacent shells are connected by the connector, and the channels between adjacent shells are interconnected, so that the channels between multiple shells form a pipe mounting position; the connector is detachably connected to the shell; the liquid-cooled pipe passes through the pipe mounting position, and the liquid-cooled pipe is used to circulate coolant to cool the shell.

[0005] In some embodiments of this application, the housing is provided with a first through hole; the connector includes a connecting plate and a fastener, the connecting plate is provided with at least two second through holes spaced apart, the at least two second through holes respectively correspond to the positions of the first through holes on at least two adjacent housings, and the fastener passes through the corresponding first through hole and second through hole to connect the connecting plate to at least two housings.

[0006] In some embodiments of this application, the connecting plate is elongated, with second through holes at both ends along its length, and both ends of the connecting plate are connected to two adjacent housings respectively; or the connecting plate includes a first connecting portion and a second connecting portion, with one end of the first connecting portion along its length connected to the other end of the first connecting portion along its length, and the first connecting portion and the second connecting portion are arranged at an angle, with second through holes at the ends of the first connecting portion away from the second connecting portion, the second connecting portion away from the first connecting portion, and the connecting plate at the end where the first connecting portion and the second connecting portion connect, and the connecting plate at the ends where the first connecting portion and the second connecting portion connect, are respectively connected to three adjacent housings; or the connecting plate has second through holes at each of its four corners, and the four corners of the connecting plate are respectively connected to four adjacent housings.

[0007] In some embodiments of this application, the housing is rectangular, and the four corners of the housing are provided with assembly positions for mounting the connecting plate, and the first through hole is provided at the assembly position; the connecting plate is provided in the assembly positions of adjacent housings that are close to each other.

[0008] In some embodiments of this application, the housing includes a lower housing and an upper housing, the upper housing covering the lower housing, and the upper housing and the lower housing together forming the channel.

[0009] The lower housing has a first groove, and the upper housing has a second groove. The position of the second groove corresponds to the position of the first groove, and the second groove and the first groove together form the channel. The cross-sections of the first groove and the second groove are both semi-circular, and the diameters of the first groove and the second groove are equal to the diameter of the liquid cooling pipe.

[0010] In some embodiments of this application, both the upper and lower housings are connected to the connector; the lower housing has a first mounting groove at each of its four corners facing the lower housing, and the upper housing has a second mounting groove at each of its four corners facing the lower housing. The positions of the second mounting grooves correspond to the positions of the first mounting grooves, and the second mounting grooves and the first mounting grooves together form an assembly position for mounting the connector; the liquid cooling plate also includes a filler block, which is detachably connected to the assembly position of the housing where the connector is not mounted, and the outer surface of the filler block is in contact with the inner wall of the assembly position.

[0011] In some embodiments of this application, the channel includes a first channel and a second channel, the first channel intersecting the second channel; the housing is open at least at one end of the first channel and at least at one end of the second channel; at least a portion of the channel is provided with the liquid cooling pipe.

[0012] In some embodiments of this application, the middle portion of the first channel intersects the middle portion of the second channel, and the housing is open at both ends of the first channel and the housing is open at both ends of the second channel; the width at the intersection of the first channel and the second channel is greater than or equal to twice the diameter of the liquid cooling pipe.

[0013] In some embodiments of this application, the liquid cooling pipe is configured as one, and the liquid cooling pipe passes through the channels of multiple shells; or the liquid cooling pipe is configured as multiple, the multiple liquid cooling pipes are arranged in parallel, and are all arranged in the pipe installation position; or the liquid cooling pipe includes multiple pipe segments, the multiple pipe segments are respectively arranged in a one-to-one correspondence with multiple shells, and the pipe segments on adjacent shells are arranged in series.

[0014] A battery pack includes battery cells and a liquid cooling plate; the battery cells are fixed to the liquid cooling plate so that the heat of the battery cells can be transferred to the liquid cooling plate.

[0015] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows:

[0016] The battery pack of this application includes battery cells and a liquid cooling plate, with the battery cells fixed to the liquid cooling plate. The liquid cooling plate includes multiple housings, connectors, and liquid cooling pipes. Each housing has an internal channel. The connectors connect to the multiple housings, fixing them together, and the channels of adjacent housings are interconnected. The liquid cooling pipes pass through the channels and circulate coolant, allowing heat from the battery cells to be transferred through the housings to the coolant within the pipes, where the heat is dissipated, thus cooling the battery cells. The connectors are detachably connected to the housings, allowing users to adjust the number of housings and the shape formed by the housings according to the battery pack specifications, thus adapting the liquid cooling plate to different battery pack sizes. Furthermore, the liquid cooling pipes ensure the sealing of the liquid cooling pipes, preventing coolant leakage from the liquid cooling plate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the liquid cooling plate in one embodiment.

[0018] Figure 2 yes Figure 1The diagram shown is an exploded view of the liquid cooling plate from one perspective.

[0019] Figure 3 yes Figure 1 The diagram shows the exploded structure of the liquid cooling plate from another perspective.

[0020] Figure 4 yes Figure 1 A schematic diagram of the structure after the top cover is removed.

[0021] Figure 5 This is a schematic diagram of the shell structure in one embodiment.

[0022] Figure 6 yes Figure 5 The diagram shows a partial cross-sectional view of the shell.

[0023] Figure 7 yes Figure 5 The diagram shows the exploded structure of the shell.

[0024] Figure 8 This is a schematic diagram of the connecting plate in one embodiment.

[0025] Figure 9 This is a schematic diagram of the connecting plate in another embodiment.

[0026] Figure 10 This is a schematic diagram of the connecting plate in another embodiment.

[0027] Figure 11 This is a schematic diagram of the structure of the filler block in one embodiment.

[0028] Figure 12 This is a schematic diagram of the structure in one embodiment where liquid cooling pipes are arranged on the shell.

[0029] Figure 13 This is a schematic diagram of the liquid cooling pipes arranged on the shell in another embodiment.

[0030] The annotations in the attached figures are explained as follows:

[0031] 100-Liquid cooling plate; 1-Shell; 11-Lower shell; 111-First groove; 112-First mounting groove; 12-Upper shell; 121-Second groove; 122-Second mounting groove; 13-Channel; 131-First channel; 132-Second channel; 14-Assembly position; 15-First through hole; 151-First screw through hole; 152-Second screw through hole; 2-Connector; 21-Connecting plate; 22-Fastener; 211-Second through hole; 3-Liquid cooling pipe; 4-Filling block; 41-Third through hole. Detailed Implementation

[0032] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0033] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back, etc.) are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0034] 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 one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] The battery pack includes a casing, a liquid cooling plate, and at least one battery cell. Both the liquid cooling plate and the battery cell are disposed within the casing, and the liquid cooling plate is attached to the bottom surface of the battery cell with thermally conductive adhesive, enabling the liquid cooling plate to dissipate heat and cool the battery cell. In some embodiments, the liquid cooling plate may also be an integral structure with the casing; for example, the casing may be a box structure formed by splicing multiple liquid cooling plates.

[0036] Existing battery packs use a single, integrated liquid cooling plate, meaning the plate has fixed specifications. This limits its applicability to different battery pack sizes. When a battery pack needs a replacement liquid cooling plate, only plates of the same specifications can be used, making replacement inconvenient. Furthermore, different specifications of liquid cooling plates require different molds for production, leading to high production costs.

[0037] See Figures 1 to 4To address the aforementioned problems, this application provides a liquid-cooled plate 100, comprising multiple housings 1, at least one connector 2, and at least one liquid-cooled pipe 3. Each housing 1 has an internal channel 13 extending to the edge of the housing 1 and opening therein. Adjacent housings 1 are connected by a connector 2, and the channels 13 between adjacent housings 1 are interconnected, forming a pipe mounting position. The liquid-cooled pipe 3 passes through the pipe mounting position and is used to circulate coolant to cool the housings 1. By providing the liquid-cooled pipe 3 for coolant circulation, the sealing of the liquid-cooled pipe 3 can be ensured, preventing coolant leakage from the liquid-cooled plate 100. The connector 2 is detachably connected to the housing 1, allowing the user to adjust the number of housings 1 and the shape formed by the multiple housings 1 according to the specifications of the battery pack, enabling the liquid-cooled plate 100 to adapt to battery packs of different specifications.

[0038] Each housing 1 includes a lower housing 11 and an upper housing 12. The upper housing 12 covers the lower housing 11, and the surfaces of the upper housing 12 and the lower housing 11 facing each other are abutted. The upper housing 12 and the lower housing 11 together form a channel 13 for installing a liquid cooling pipe 3. When the liquid cooling pipe 3 passes through the channel 13, it is clamped by the lower housing 11 and the upper housing 12, thus fixing the liquid cooling pipe 3 within the channel 13 of the housing 1. Specifically, a first groove 111 is formed on the side of the lower housing 11 facing the upper housing 12, and a second groove 121 is formed on the side of the upper housing 12 facing the lower housing 11. When the upper housing 12 covers the lower housing 11, the position of the second groove 121 is directly opposite the position of the first groove 111, and the second groove 121 and the first groove 111 together form the channel 13. In other embodiments, grooves may only be provided on the lower housing 11 or the upper housing 12. When the upper housing 12 covers the lower housing 11, the grooves form the channel 13 on the housing 1.

[0039] The cross-sections of the first groove 111 and the second groove 121 are both semi-circular, and the diameters of the first groove 111 and the second groove 121 are equal to the diameter of the liquid cooling pipe 3. When the upper shell 12 is placed on the lower shell 11, the first groove 111 and the second groove 121 form a channel 13 with a diameter equal to that of the liquid cooling pipe 3. This ensures that when the liquid cooling pipe 3 is installed in the channel 13, the outer surface of the liquid cooling pipe 3 is completely in contact with the inner wall of the channel 13, increasing the contact area between the liquid cooling pipe 3 and the shell 1, improving the heat exchange efficiency between the liquid cooling pipe 3 and the shell 1, and enhancing the stability of the fixed connection between the liquid cooling pipe 3 and the shell 1, preventing the liquid cooling pipe 3 from separating from the shell 1.

[0040] exist Figures 5 to 7In the illustrated embodiment, the lower housing 11 and the upper housing 12 have identical structures, and when the upper housing 12 is placed on top of the lower housing 11, the lower housing 11 and the upper housing 12 form a symmetrical structure. When assembling the liquid cooling plate 100, it is not necessary to distinguish between the upper housing 12 and the lower housing 11, making assembly convenient.

[0041] Channel 13 includes a first channel 131 and a second channel 132. The housing 1 has an opening at least at one end of the first channel 131 and at least one end of the second channel 132. Furthermore, at least a portion of the channel 13 contains a liquid cooling pipe 3. Figure 6 In the illustrated embodiment, the middle of the first channel 131 intersects the middle of the second channel 132, and the housing 1 is open at both ends of the first channel 131 and the housing 1 is open at both ends of the second channel 132, so that the first channel 131 and the second channel 132 form a cross-shaped structure. This allows the user to select the arrangement of the liquid cooling pipe 3 as needed. For example, the liquid cooling pipe 3 can pass directly through the housing 1 along the first channel 131 or the second channel 132, or the liquid cooling pipe 3 can be arranged in part of the first channel 131 and part of the second channel 132, so that the liquid cooling pipe 3 is distributed in an L-shape on the housing 1.

[0042] The width at the intersection of the first channel 131 and the second channel 132 is greater than or equal to twice the diameter of the liquid cooling pipe 3. Each housing 1 can accommodate two non-intersecting liquid cooling pipes 3 within its channel 13, allowing the user to select the arrangement and number of liquid cooling pipes 3 as needed. For example, both liquid cooling pipes 3 can be L-shaped and non-intersecting on the housing 1.

[0043] In other embodiments, the first channel 131 and the second channel 132 intersect at their ends, forming an approximately "L"-shaped channel 13; or the end of the first channel 131 intersects the middle of the second channel 132, forming an approximately "T"-shaped channel 13; or the first channel 131 and the second channel 132 do not intersect, for example, the first channel 131 and the second channel 132 are two parallel channels 13.

[0044] exist Figure 5 and Figure 7In the illustrated embodiment, both the lower housing 11 and the upper housing 12 are rectangular in shape, making the housing 1 formed by the lower housing 11 and the upper housing 12 rectangular. This facilitates the splicing of multiple adjacent housings 1 together and ensures that the sides of adjacent housings 1 are completely fitted together, improving the heat transfer effect between multiple adjacent housings 1 and making the overall temperature of the battery pack more uniform. Moreover, since the multiple housings 1 are completely fitted together to form a flat plate, the contact area between the battery cells and the liquid cooling plate 100 is guaranteed when the battery cells are placed on the liquid cooling plate 100, ensuring the heat exchange efficiency between the battery cells and the housing 1.

[0045] Preferably, both the lower housing 11 and the upper housing 12 are oriented positively. The first groove 111 forming the first channel 131 on the lower housing 11 is located on two symmetrical lines passing through the middle of the edge of the lower housing 11. Similarly, the second groove 121 forming the second channel 132 on the upper housing 12 is located on two symmetrical lines passing through the middle of the edge of the upper housing 12. This ensures that during the assembly of the liquid cooling plate 100, any side of the lower housing 11 can be aligned with the side of an adjacent lower housing 11, and any side of the upper housing 12 can also be aligned with the side of an adjacent upper housing 12, making the assembly of the liquid cooling plate 100 more convenient. It should be noted that the shapes of the lower housing 11 and the upper housing 12 can also be triangular, rectangular, or hexagonal, etc.

[0046] The housing 1 has four corners with mounting positions 14 for mounting connecting plates 21, and the housing 1 has a first through hole 15 at the mounting position 14. Specifically, the lower housing 11 has a first mounting groove 112 at each corner on the side facing the upper housing 12, and the lower housing 11 has an opening at the edge of the first mounting groove 112. The upper housing 12 has a second mounting groove 122 at each corner on the side facing the lower housing 11, and the upper housing 12 has an opening at the edge of the second mounting groove 122. The position of the second mounting groove 122 corresponds to the position of the first mounting groove 112, and the second mounting groove 122 and the first mounting groove 112 together form the mounting position 14 for mounting the connecting plate 21, and the connecting plate 21 of the connector 2 can be inserted into the mounting position 14 from the openings of the first mounting groove 112 and the second mounting groove 122. The lower housing 11 is provided with a first screw through hole 151 at the first mounting groove 112, and the upper housing 12 is provided with a second screw through hole 152 at the second mounting groove 122. The first screw through hole 151 on the lower housing 11 and the second screw through hole 152 on the upper housing 12 are aligned and form a first through hole 15.

[0047] Preferably, the assembly position 14 is symmetrically arranged about the diagonal of the housing 1, so that the front and back sides of the connecting plate 21 of the interchangeable connector 2 can also be installed in the assembly position 14, making installation convenient. It should be noted that the assembly position 14 can be provided only on the lower housing 11 or the upper housing 12; the assembly position 14 can also be provided in the middle of the side of the housing 1, and its position is offset from that of the channel 13.

[0048] exist Figure 6 and Figure 7 In the illustrated embodiment, both the first mounting groove 112 and the second mounting groove 122 are rectangular; in other embodiments, the first mounting groove 112 and the second mounting groove 122 may also be arc-shaped, triangular, or the like.

[0049] See Figures 8 to 10 The connector 2 includes a connecting plate 21 and a fastener 22. The connecting plate 21 has at least two second through holes 211 spaced apart, and the positions of the at least two second through holes 211 correspond to the positions of the first through holes 15 on at least two adjacent housings 1. The fastener 22 is a screw structure, and the fastener 22 passes through the corresponding first through holes 15 and second through holes 211 to connect the connecting plate 21 to at least two housings 1.

[0050] Specifically, the fasteners 22 include bolts and nuts. When assembling the liquid cooling plate 100, bolts are first inserted into the first through-hole 15 of the lower housing 11, and multiple lower housings 11 are laid on the same plane as needed. Then, the connecting plate 21 is installed at the corresponding assembly position 14, and bolts pass through the second through-hole 211 on the connecting plate 21, connecting the lower housings 11 together. Next, liquid cooling pipes 3 are laid in the first groove 111 of the lower housing 11; and the upper housing 12 is placed on top of the lower housing 11, with bolts passing through the first through-hole 15 on the upper housing 12. Nuts are then connected to the end of the bolts facing away from the lower housing 11, so that the fasteners 22 fix the lower housing 11, the connecting plate 21, and the upper housing 12 together, and clamp the liquid cooling pipes 3 between the lower housing 11 and the upper housing 12, thus assembling the liquid cooling plate 100.

[0051] The connecting plate 21 can be configured in various shapes. Users can select the corresponding connecting plate 21 according to the shape of the liquid cooling plate 100 to achieve the connection between adjacent shells 1.

[0052] For example, such as Figure 8 As shown, the connecting plate 21 is elongated, and each end of the connecting plate 21 along the length direction is provided with a second through hole 211. The two ends of the connecting plate 21 along the length direction are respectively connected to two adjacent shells 1, so that the two adjacent shells 1 are spliced ​​together along the length direction of the connecting plate 21.

[0053] For example, the connecting plate 21 includes a first connecting portion and a second connecting portion, one end of the first connecting portion in the length direction is connected to the other end in the length direction, and the first connecting portion and the second connecting portion are arranged at an angle. Figure 9In the illustrated embodiment, there is a right - angle between the first connecting portion and the second connecting portion, such that the connecting plate 21 forms an L - shape. In other embodiments, an angle of other degrees can also be formed between the first connecting portion and the second connecting portion.

[0054] Second through - holes 211 are provided at one end of the first connecting portion away from the second connecting portion, one end of the second connecting portion away from the first connecting portion, and at the end where the first connecting portion and the second connecting portion are connected on the connecting plate 21. The connecting plate 21 at one end of the first connecting portion away from the second connecting portion, one end of the second connecting portion away from the first connecting portion, and at the end where the first connecting portion and the second connecting portion are connected is respectively connected to three adjacent housings 1, such that the three housings 1 are spliced to form an "L" shape.

[0055] For example, as Figure 10 shown, the connecting plate 21 is rectangular, and second through - holes 211 are provided at the four corners of the connecting plate 21. The four corners of the connecting plate 21 are respectively connected to four adjacent housings 1, such that the four adjacent housings 1 are spliced to form a "field" shape. It should be noted that the connecting plate 21 can also be rhombic or approximately in the shape of an "X".

[0056] In Figures 2 to 4 the illustrated embodiment, a long - strip connecting plate, an L - shaped connecting plate, and a rectangular connecting plate are simultaneously used to connect multiple housings 1 of the same liquid - cooling plate 100. In other embodiments, only a long - strip connecting plate, an L - shaped connecting plate, or a rectangular connecting plate can also be used for connection.

[0057] Refer to Figures 2 to 4 and Figure 11 , the liquid - cooling plate 100 further includes a compensating block 4. The compensating block 4 is detachably connected to the assembly position 14 of the housing 1 where the connecting plate 21 is not assembled, and the outer surface of the compensating block 4 is in contact with the wall surface of the assembly position 14 to ensure the contact area between the upper housing 12 and the lower housing 11, thereby ensuring the heat transfer efficiency between the upper housing 12 and the lower housing 11 and improving the cooling effect on the battery cells.

[0058] In Figures 1 to 4 the illustrated embodiment, in the partial assembly positions 14 of the housings 1 located at the edge of the liquid - cooling plate 100, the connecting plate 21 does not need to be connected. Therefore, the compensating block 4 fills the gap in the assembly position 14, such that the upper housing 12 and the lower housing 11 are in contact through the compensating block 4, ensuring the contact area between the upper housing 12 and the lower housing 11.

[0059] The connection method between the replacement block 4 and the housing 1 is the same as the connection method between the connecting plate 21 and the housing 1. That is, the upper housing 12, the replacement block 4, and the lower housing 11 are fixed together with screws, which not only realizes the connection between the replacement block 4 and the housing 1, but also makes the connection between the upper housing 12 and the lower housing 11 at the edge of the liquid cooling plate 100 more stable and reliable. Specifically, the replacement block 4 is provided with a third through hole 41 for the screw to pass through. The position of the third through hole 41 corresponds to the position of the first through hole 15 on the housing 1, so that the replacement block 4 can be fixed to the outer shell with screws. In other embodiments, the replacement block 4 may also be fixedly connected only to the upper housing 12 or the lower housing 11. The shape and size of the replacement block 4 are adapted to the size of the mounting position.

[0060] Both ends of the liquid cooling pipe 3 are connected to the coolant supply device at the liquid cooling plate 100, so that the coolant supply device enters the liquid cooling pipe 3 from one end of the liquid cooling pipe 3 and flows back to the coolant supply device from the other end of the liquid cooling pipe 3, so that the coolant circulates and achieves continuous cooling of the battery cell.

[0061] In one embodiment, see Figure 12 One liquid cooling pipe 3 is provided, and the liquid cooling pipe 3 passes through the channel 13 of multiple shells 1, so that one liquid cooling pipe 3 can cool multiple shells 1 at the same time, and the connection is convenient.

[0062] In one embodiment, see Figure 13 Multiple liquid cooling pipes 3 are configured, and the multiple liquid cooling pipes 3 are arranged in parallel and are all installed in the pipe installation position. The multiple liquid cooling pipes 3 can be connected to the coolant supply device individually, or the multiple liquid cooling pipes 3 can be connected to the coolant supply device through the distribution pipe, so that the coolant from the coolant supply device is distributed to the multiple liquid cooling pipes 3 through the distribution pipe.

[0063] In one embodiment, the liquid cooling pipe 3 includes multiple pipe segments, each corresponding to a multiple housing 1. When the multiple housings 1 are joined together, the pipe segments on two adjacent housings 1 are connected in series, so that all the pipe segments form one or more liquid cooling pipes 3.

[0064] The liquid cooling plate 100 of this application includes multiple housings 1, connectors 2, and liquid cooling pipes 3. Each housing 1 has an internal channel 13. The connectors 2 are connected to the multiple housings 1, fixing the multiple housings 1 together. The channels 13 of two adjacent housings 1 are connected. The liquid cooling pipes 3 pass through the channels 13 and are used to circulate coolant. This allows the heat from the battery cells to be transferred through the housings 1 to the coolant in the liquid cooling pipes 3, and the heat is dissipated by the coolant, thus achieving heat dissipation and cooling of the battery cells. The connectors 2 are detachably connected to the housings 1, allowing users to adjust the number of housings 1 and the shape formed by the multiple housings 1 according to the specifications of the battery pack, thereby making the liquid cooling plate 100 adaptable to different battery pack specifications. Moreover, by setting up the liquid cooling pipes 3 to circulate coolant, the sealing of the liquid cooling pipes 3 can be ensured, avoiding the problem of coolant leakage from the liquid cooling plate 100.

[0065] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A liquid-cooled plate, characterized in that, The device includes multiple housings, at least one connector, and liquid cooling pipes. Each housing has an internal channel that extends to the edge of the housing and opens. Any adjacent housings are connected by the connector, and the channels between adjacent housings are interconnected to form a pipe mounting position. The connector is detachably connected to the housing. The liquid cooling pipe passes through the pipe mounting position and is used to circulate coolant to cool the housing.

2. The liquid cooling plate according to claim 1, characterized in that, The housing is provided with a first through hole; The connector includes a connecting plate and fasteners. The connecting plate is provided with at least two second through holes spaced apart. The at least two second through holes correspond to the positions of the first through holes on at least two adjacent housings. The fasteners are inserted into the corresponding first and second through holes to connect the connecting plate to at least two housings.

3. The liquid cooling plate according to claim 2, characterized in that, The connecting plate is elongated, with the second through hole at both ends along its length, and both ends of the connecting plate are respectively connected to two adjacent shells; or The connecting plate includes a first connecting portion and a second connecting portion. One end of the first connecting portion along its length is connected to the other end of the first connecting portion along its length, and the first connecting portion and the second connecting portion are arranged at an angle. A second through hole is provided at the end of the first connecting portion away from the second connecting portion, the end of the second connecting portion away from the first connecting portion, and the end of the connecting plate where the first connecting portion and the second connecting portion connect. The connecting plate is connected to three adjacent shells at the ends of the first connecting portion, the second connecting portion, and the connecting plate where the first connecting portion and the second connecting portion connect; or The connecting plate has a second through hole at each of its four corners, and the four corners of the connecting plate are respectively connected to four adjacent shells.

4. The liquid cooling plate according to claim 2, characterized in that, The housing is rectangular, and the four corners of the housing are provided with assembly positions for installing the connecting plate. The first through hole is provided at the assembly position. The connecting plate is provided in the assembly positions of adjacent housings that are close to each other.

5. The liquid cooling plate according to claim 1, characterized in that, The housing includes a lower housing and an upper housing, the upper housing covers the lower housing, and the upper housing and the lower housing together form the channel.

6. The liquid cooling plate according to claim 5, characterized in that, The lower housing has a first groove, and the upper housing has a second groove. The position of the second groove corresponds to the position of the first groove, and the second groove and the first groove together form the channel. The cross-sections of the first groove and the second groove are both semi-circular, and the diameters of the first groove and the second groove are equal to the diameter of the liquid cooling pipe.

7. The liquid-cooled plate according to claim 5, characterized in that, Both the upper and lower housings are connected to the connecting member; The lower housing has a first mounting groove at each of its four corners facing the lower housing, and the upper housing has a second mounting groove at each of its four corners facing the lower housing. The position of the second mounting groove corresponds to the position of the first mounting groove, and the second mounting groove and the first mounting groove together form an assembly position for mounting the connector. The liquid cooling plate also includes a replacement block, which is detachably connected to the assembly position of the housing where the connector is not assembled, and the outer surface of the replacement block is in contact with the inner wall of the assembly position.

8. The liquid cooling plate according to claim 1, characterized in that, The channel includes a first channel and a second channel, and the first channel intersects with the second channel; The housing is open at least at one end of the first channel, and the housing is open at least at one end of the second channel; At least a portion of the channel is equipped with the liquid cooling pipe.

9. The liquid cooling plate according to claim 8, characterized in that, The middle portion of the first channel intersects the middle portion of the second channel, and the housing has openings at both ends of the first channel and at both ends of the second channel; The width at the intersection of the first channel and the second channel is greater than or equal to twice the diameter of the liquid cooling pipe.

10. The liquid cooling plate according to claim 1, characterized in that, One liquid cooling pipe is provided, and the liquid cooling pipe passes through the channels of multiple shells; or The liquid cooling pipes are configured in multiple ways, and are connected in parallel, all located within the pipe installation positions; or The liquid cooling pipeline includes multiple pipeline segments, each of which is respectively associated with one of the multiple housings, and the pipeline segments on adjacent housings are connected in series.

11. A battery pack, characterized in that, It includes a battery cell and a liquid cooling plate as described in any one of claims 1-10; the battery cell is fixed to the liquid cooling plate so that the heat of the battery cell can be transferred to the liquid cooling plate.

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