Liquid-cooled battery box and battery pack

Abstract

The utility model discloses a kind of liquid-cooled battery box and battery pack, it is related to energy storage technical field, liquid-cooled battery box includes bearing frame, bearing frame includes multiple edge beams and connecting block, multiple edge beams are sequentially connected to frame shape, the inside of at least one edge beam is provided with connecting block, bearing frame is used to be connected with external transfer equipment through connecting block;At least one connecting block is located in the inside of two adjacent edge beams.This application is by setting connecting block in the inside of at least one edge beam, make bearing frame be connected with external transfer equipment through connecting block, connecting block has greater contact area between edge beam, load can be dispersed to the greater area of edge beam through connecting block, effectively reduce stress concentration problem, while connecting block plays the role of strengthening, improve the tensile strength of edge beam, substantially reduce the risk that edge beam deforms or destroys under hoisting / transportation operating condition, effectively improve the problem that pull rivet in relevant technology is easily pulled out and lead to hoisting / transportation failure.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to a liquid-cooled battery box and battery pack. Background Technology

[0002] With the increasing energy density of batteries, heat dissipation performance has become a crucial factor affecting battery safety. Liquid cooling is currently the mainstream heat dissipation method for battery devices, and current battery packs integrate liquid cooling enclosures. These enclosures consist of a frame and liquid cooling plates. In current technologies, liquid cooling enclosures are simply connected to transport equipment via connection holes on the frame's side beams. During hoisting and transport operations, the stress at the connection points between the frame's side beams and the transport equipment is extremely high. The side beams are prone to deformation or tearing under the tension of the transport equipment, causing the connection structure to detach and the liquid cooling enclosure to fall, resulting in hoisting or transport failure. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a liquid-cooled battery box to address the problem in related technologies where the connection structure between the frame side beam and the external transfer equipment is easily pulled out, leading to lifting / transfer failure.

[0004] This utility model also proposes a battery pack having the above-mentioned liquid-cooled battery box.

[0005] According to a first aspect of the present invention, a liquid-cooled battery box is applied to a battery module. The liquid-cooled battery box includes a support frame, the support frame includes multiple side beams and connecting blocks, the multiple side beams are connected in sequence to form a frame, and at least one of the side beams has the connecting block disposed inside it. The support frame is used to connect to an external transfer device through the connecting block; wherein, at least one of the connecting blocks is located inside two adjacent side beams.

[0006] The liquid-cooled battery box according to the first aspect of the present invention has at least the following beneficial effects: This application incorporates connecting blocks within at least one side beam, allowing the support frame to connect to external transport equipment via these blocks. Compared to related technologies where rivets are directly attached to the frame side beam, the connecting blocks provide a larger contact area with the side beam. When the liquid-cooled battery box is in hoisting / transportation mode, the load at the connection between the external transport equipment and the side beam can be distributed over a larger area of ​​the side beam via the connecting blocks, effectively mitigating stress concentration. Furthermore, the connecting blocks, by filling the interior of the side beam, also act as reinforcements, significantly increasing the tensile strength of the side beam. This substantially reduces the risk of deformation or damage to the side beam during hoisting / transportation, making the connection structure between the connecting blocks and the external transport equipment difficult to pull out. This effectively addresses the problem in related technologies where rivets are easily pulled out, leading to hoisting / transportation failure.

[0007] Furthermore, this application also enhances the connection strength between adjacent side beams by placing at least one connecting block inside two adjacent side beams. This reinforcement of the two side beams by the connecting block strengthens the connection and thus enhances the overall strength of the support frame, preventing deformation caused by vibration or impact. In this way, by placing the connecting block inside two adjacent side beams and reusing its function, this application enhances the overall strength of the support frame without requiring additional reinforcing structures. This not only simplifies the structure of the support frame but also reduces production costs.

[0008] According to some embodiments of the present invention, the plurality of side beams include a first side beam and a second side beam connected in sequence, the extension direction of the first side beam and the extension direction of the second side beam intersect, and the connecting block includes a first connecting block, a portion of the structure of the first connecting block being located inside the first side beam and the other portion of the structure being located inside the second side beam.

[0009] According to some embodiments of the present invention, the first side beam extends along a first direction, and the second side beam extends along a second direction; the first connecting block includes a connecting block body and a connecting portion, the connecting portion passing through the connecting block body along the second direction, and the first connecting block is used to connect with the external transfer equipment through the connecting portion; wherein, the length of the connecting block body along the first direction is greater than the length of the connecting block body along the second direction.

[0010] According to some embodiments of the present invention, the connecting portion is provided as at least two, and the at least two connecting portions are arranged at intervals along the first direction; and / or, the first direction is the width direction of the support frame, and the second direction is the length direction of the support frame.

[0011] According to some embodiments of the present invention, a plurality of the side beams enclose an accommodating space, and the liquid-cooled battery box further includes a liquid-cooled plate body and a bottom support beam. The liquid-cooled plate body is connected to the side beams, and part of its structure is located in the accommodating space. The bottom support beam is disposed below the liquid-cooled plate body. The side beams and the bottom support beam support the liquid-cooled plate body. The bottom support beam is connected to the side beams, and at least one of the side beams supports the bottom support beam.

[0012] According to some embodiments of the present invention, at least one of the side beams includes a beam body and a support portion, the support portion being connected to the side of the beam body facing the accommodating space, the support portion being lower than the beam body, the liquid cooling plate body being supported by the beam body, and the bottom support beam being supported by the support portion.

[0013] According to some embodiments of the present invention, the support portion includes a first support portion and a second support portion, wherein the first support portion is connected between the beam body and the second support portion, and the first support portion is higher than the second support portion; The bottom support beam includes a beam plate and an abutment portion. The abutment portion protrudes from the beam plate in a direction away from the liquid cooling plate body. The beam plate is supported by the first support portion, and the abutment portion is supported by the second support portion.

[0014] According to some embodiments of the present invention, at least one of the side beams further includes a reinforcing portion, which is located on the side of the support portion away from the bottom support beam. One end of the reinforcing portion is connected to the end of the support portion away from the beam body, and the other end is connected to the beam body.

[0015] According to some embodiments of the present invention, a plurality of the side beams enclose an accommodating space. The liquid-cooled battery box further includes a liquid-cooled plate body and a first module mounting beam. The liquid-cooled plate body is connected to the side beams, and part of its structure is located in the accommodating space. The first module mounting beam is disposed on the liquid-cooled plate body and is used to connect the cell assembly of the battery module. The first module mounting beam is connected to the side beams.

[0016] According to some embodiments of the present invention, at least one of the side beams includes a beam body and a support portion, the support portion being connected to the side of the beam body facing the receiving space, wherein the support portion of one of the side beams is located below the first module mounting beam and is connected to the first module mounting beam.

[0017] According to some embodiments of the present invention, a portion of the structure of the liquid cooling plate body is located between the first module mounting beam and the support portion, and the first module mounting beam is connected to the support portion by a first fastener passing through the liquid cooling plate body.

[0018] According to some embodiments of the present invention, the liquid cooling plate body and the support portion are spaced apart, and an installation component is provided between the liquid cooling plate body and the support portion, the installation component supporting the liquid cooling plate body; the first fastener passes through the installation component, and the liquid cooling plate body is connected to the first module mounting beam.

[0019] According to some embodiments of the present invention, at least a portion of the side beams are roll-formed parts, and / or, at least a portion of the side beams define cavities, and the connecting block is disposed within the cavities of at least a portion of the side beams.

[0020] A battery pack according to a second aspect of the present invention includes a battery module and a liquid-cooled battery box as described in any of the above embodiments, wherein the battery module is mounted on the liquid-cooled battery box.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a first-view structural schematic diagram of the liquid-cooled battery box according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the support frame of the liquid-cooled battery box according to an embodiment of the present utility model; Figure 3 This is a first sectional view of the connection between the side beam and the connecting block in an embodiment of the present utility model; Figure 4 This is a second sectional view of the connection between the side beam and the connecting block in an embodiment of this utility model; Figure 5 This is a second-view structural schematic diagram of the liquid-cooled battery box according to an embodiment of the present invention; Figure 6 This is a schematic diagram showing the connection between the support frame and the bottom support beam in an embodiment of the present invention; Figure 7 for Figure 6 A magnified view of a section at point A in the middle; Figure 8 This is a schematic cross-sectional view of the side beam of the support frame according to an embodiment of the present utility model; Figure 9 This is a top view of the liquid-cooled battery box according to an embodiment of the present utility model; Figure 10 for Figure 9 The structure shown is a cross-sectional view along section CC. Figure 11 for Figure 9 The structure shown is a cross-sectional view along section BB.

[0023] Icon labels: 10. Liquid-cooled battery box; 100, support frame; 100a, storage space; 110. Side beam; 1101. First side beam; 1102. Second side beam; 1103. Third side beam; 110a. Cavity; 111. Beam body; 112. Support part; 1121. First support part; 1122. Second support part; 113. Reinforcing part; 120. Mounting component; 130. Connecting block; 1301. First connecting block; 131. Connecting block body; 132. Connecting part; 200, Liquid cooling plate assembly; 210, Liquid cooling plate body; 210a, First end; 210b, Second end; 220, Adaptor pipe; 300. Bottom support beam; 301. Bottom front crossbeam; 310. Beam plate; 320. Abutment part; 400. Module mounting beam; 410. First module mounting beam; 420. Second module mounting beam; 500, First fastener; 600, Second fastener. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] This application provides a liquid-cooled battery box. The liquid-cooled battery box is used in a battery pack, which includes battery modules, and the battery modules are mounted in the liquid-cooled battery box. The battery modules may include cell assemblies and battery covers.

[0029] Please refer to Figure 1 The liquid-cooled battery box 10 provided in this application includes a liquid-cooled plate assembly 200 and a support frame 100.

[0030] Understandably, the liquid-cooled plate assembly 200 is a core functional component of the liquid-cooled battery box 10. The liquid-cooled plate assembly 200 may include a liquid-cooled plate body 210. When the battery cell assembly is installed in the liquid-cooled battery box 10, the battery cell assembly is supported by and in contact with the liquid-cooled plate body 210. The liquid-cooled plate body 210 is used to dissipate heat from the battery cell assembly using liquid cooling. The liquid-cooled plate assembly 200 also includes an adapter pipe 220, which connects the liquid-cooled plate body 210 to an external cooling system. The external cooling system provides refrigerant and power to achieve refrigerant circulation. Understandably, the adapter pipe 220 may include an inlet pipe and an outlet pipe. The refrigerant provided by the external cooling system enters the liquid-cooled plate body 210 through the inlet pipe. During the flow of the refrigerant through the liquid-cooled plate body 210, it can carry away the heat transferred by the battery cell assembly, achieving liquid cooling. Then, it flows back to the external cooling system through the outlet pipe, thus repeating the cycle to achieve refrigerant circulation.

[0031] The support frame 100 is the main support for the liquid-cooled battery box 10. The liquid-cooled plate assembly 200 is supported and connected to the support frame 100, and the weight of the liquid-cooled plate assembly 200 and the battery cell assembly acts on the support frame 100. At the same time, the support frame 100 serves as a connecting component for the liquid-cooled battery box 10 (and the battery pack as a whole), so that the liquid-cooled battery box 10 or the battery pack as a whole can be hoisted or transported through the support frame 100.

[0032] In the embodiments of this application, please refer to Figure 2 The support frame 100 includes multiple side beams 110, which are connected sequentially to form a frame shape, and the multiple side beams 110 enclose an accommodating space 100a. The liquid-cooled plate body 210 is connected to the side beams 110, and part of the structure of the liquid-cooled plate body 210 is located in the accommodating space 100a. It should be noted that the arrangement of the liquid-cooled plate body 210 "partially located in the accommodating space 100a" includes not only the case where the liquid-cooled plate body 210 is wholly or partially inserted into the accommodating space 100a, but also the case where it is not inserted into the accommodating space, but is set on the upper surface of the side beams 110, but is still within the spatial range of the accommodating space 100a extending in the height direction.

[0033] The support frame 100 bears the weight of the battery module installed in the liquid-cooled battery box 10 during hoisting / transfer. In related technologies, current liquid-cooled boxes simply have connection holes on the frame side beams and are connected to the transfer equipment via rivets. During hoisting and transfer operations, the stress at the connection between the rivets and the frame is very high. The rivets are prone to deformation or tearing under the tension of the transfer equipment, causing them to be pulled out and resulting in the liquid-cooled box falling and transfer failure.

[0034] For this purpose, please refer to the embodiments in this application. Figure 3and Figure 4 The support frame 100 also includes a connecting block 130. At least one side beam 110 has a connecting block 130 inside it. The support frame 100 is used to connect with external transfer equipment through the connecting block 130. At least one connecting block 130 is located inside two adjacent side beams 110.

[0035] Understandably, the connecting block 130 can be provided with a connecting part for fastening structures such as rivets, and external transfer equipment can be connected to the connecting block 130 through the connecting part.

[0036] This application provides a connecting block 130 inside at least one side beam 110, allowing the support frame 100 to connect to external transfer equipment via the connecting block 130. Compared to the direct connection of rivets to the frame side beam in related technologies, the connecting block 130 has a larger contact area with the side beam 110. When the liquid-cooled battery box 10 is in the hoisting / transfer condition, the load at the connection between the external transfer equipment and the side beam 110 can be distributed to a larger area of ​​the side beam 110 through the connecting block 130, effectively reducing stress concentration. At the same time, through the filling of the connecting block 130 inside the side beam 110, the connecting block 130 also plays a reinforcing role, greatly improving the tensile strength of the side beam 110. This significantly reduces the risk of deformation or damage to the side beam 110 under hoisting / transfer conditions, making it difficult to pull out the connection structure between the connecting block 130 and the external transfer equipment. This effectively improves the problem in related technologies where rivets are easily pulled out, leading to hoisting / transfer failure.

[0037] It should also be noted that this application further enhances the connection strength between the two adjacent side beams 110 by placing at least one connecting block 130 inside the two adjacent side beams 110, thereby strengthening the overall strength of the support frame 100 and preventing deformation of the support frame 100 due to vibration or impact. Thus, by placing the connecting block 130 inside the two adjacent side beams 110, this application reuses the function of the connecting block 130 and enhances the overall strength of the support frame 100 without additional reinforcing structures, simplifying the structure of the support frame 100 and reducing production costs.

[0038] In some embodiments of this application, combined with Figure 3As shown, at least a portion of the side beam 110 defines a cavity 110a within its interior. By defining cavities 110a within the side beam 110, boundaries can be formed between the cavities 110a, enhancing the overall strength of the side beam 110 and further improving the load-bearing capacity and deformation resistance of the support frame 100. Moreover, the cavities 110a have an energy-absorbing function. When the support frame 100 is subjected to external vibration or impact, the vibration can be transmitted to the cavities 110a of the side beam 110, where the cavities 110a can absorb a portion of the vibration energy, thereby gradually weakening the energy during vibration transmission and effectively preventing deformation of the support frame 100.

[0039] The cavity 110a inside the side beam 110 can be one, two or more. The accompanying drawings of this embodiment are only illustrative examples of two cavities 110a inside the side beam 110 and should not be considered as a limitation of this application.

[0040] In some embodiments of this application, at least a portion of the cavity of the side beam 110 is provided with the aforementioned connecting block 130.

[0041] In some embodiments, please refer to the reference Figure 2 and Figure 4 The multiple side beams 110 include a first side beam 1101 and a second side beam 1102 connected in sequence. The extension direction of the first side beam 1101 intersects the extension direction of the second side beam 1102. The connecting block 130 includes a first connecting block 1301. Part of the structure of the first connecting block 1301 is located inside the first side beam 1101, and the other part of the structure is located inside the second side beam 1102.

[0042] In the above embodiment, the extension direction of the first side beam 1101 intersects the extension direction of the second side beam 1102. By placing part of the structure of the first connecting block 1301 within the first side beam 1101 and part within the second side beam 1102, the first connecting block 1301 is positioned at the corner of the support frame 100. Through the connection of the first connecting block 1301 with the external transfer equipment, the load borne by the liquid-cooled battery box 10 during overall hoisting and transfer is transferred to the first side beam 1101 and the second side beam 1102, increasing the load transfer path and allowing the load to be transferred to a farther location on the support frame 100 more quickly and effectively, significantly reducing the load borne by the connecting block 130. Furthermore, the reinforcing effect of the first connecting block 1301 improves the connection strength at the corner of the support frame 100, significantly enhancing the load-bearing capacity and deformation resistance of the support frame 100.

[0043] In one embodiment of this application, the extension direction of the first side beam 1101 and the extension direction of the second side beam 1102 are perpendicular to each other. It is understood that, in one embodiment, the first side beam 1101 may extend along the width direction of the support frame 100, and the second side beam 1102 may extend along the length direction of the support frame 100. Alternatively, in another possible embodiment, the first side beam 1101 may extend along the length direction of the support frame 100, and correspondingly, the second side beam 1102 may extend along the width direction of the support frame 100.

[0044] It is understood that in some other embodiments, the connecting block 130 may also include a second connecting block (not shown in the figure), the entire structure of which is located within the first side beam 1101 or the second side beam 1102.

[0045] Please continue to refer to this. Figure 4 In some embodiments of this application, the first side beam 1101 extends along a first direction, and the second side beam 1102 extends along a second direction. The first connecting block 1301 includes a connecting block body 131 and a connecting portion 132, the connecting portion 132 passing through the connecting block body 131 along the second direction, and the first connecting block 1301 is used to connect with external transfer equipment through the connecting portion 132. The length of the connecting block body 131 along the first direction is greater than the length of the connecting block body 131 along the second direction.

[0046] like Figure 4 As shown, the connecting portion 132 can be a connecting hole passing through the connecting block body 131 along the second direction. The connecting hole can be a threaded hole or a smooth hole. External transfer equipment can be connected to the connecting hole by a rivet or other fastener. To improve the reliability and stability of the connection, in one embodiment of this application, at least two connecting portions 132 are provided, and the at least two connecting portions 132 are arranged at intervals along the first direction.

[0047] In the above embodiment, the length of the connecting block body 131 along the first direction is greater than its length along the second direction. Therefore, the length of the connecting block body 131 within the first side beam 1101 is greater than its length within the second side beam 1102. In other words, the first connecting block 1301 mainly extends along the first side beam 1101. It can be understood that since the connecting part 132 passes through the connecting block body 131 along the second direction, the load on the first connecting block 1301 when connected to the external transfer equipment can be transmitted to the first side beam 1101 through the connecting part 132 along the second direction. By making the length of the connecting block body 131 along the first direction greater than its length along the second direction, the contact area between the first connecting block 1301 and the first side beam 1101 is increased, that is, the stress-bearing area of ​​the two is increased, which is conducive to the rapid diffusion of load. At the same time, the stress at the contact point between the two is reduced, which can better prevent deformation or damage at the connection between the side beam 110 and the external transfer equipment, which would cause the connecting block 130 to be pulled out, and effectively ensure the safety of the liquid-cooled battery box 10 during hoisting and transfer.

[0048] In some embodiments of this application, the liquid-cooled battery box 10 is used to provide liquid cooling for the battery modules of the energy storage container. To accommodate the lifting of the energy storage container, the first direction is the width direction of the support frame 100, and the second direction is the length direction of the support frame 100. It is understood that when the liquid-cooled battery box 10 is used to install the battery modules of the energy storage container, the width direction of the support frame 100 is the width direction of the energy storage container, and the length direction of the support frame 100 is the length direction of the energy storage container. This allows external transfer equipment to connect to the side beam 110 of the support frame 100 from the width side of the energy storage container via the aforementioned connecting part 132, facilitating lifting and transfer operations.

[0049] In some embodiments, please refer to Figure 5 The liquid-cooled battery box 10 of this application also includes a bottom support beam 300, which is connected to the side beam 110 and is located below the liquid-cooled plate body 210. The side beam 110 and the bottom support beam 300 support the liquid-cooled plate body 210. By setting the bottom support beam 300, the liquid-cooled plate body 210 is jointly supported by the side beam 110 and the bottom support beam 300, increasing the supported area. Moreover, the bottom support beam 300 can support the middle part of the liquid-cooled plate body 210 away from the side beam 110, effectively preventing deformation of the liquid-cooled plate body 210.

[0050] Understandably, multiple bottom support beams 300 can be provided. In some embodiments, the bottom support beams 300 can be arranged at intervals along the length or width of the support frame 100.

[0051] When the battery cell assembly is supported on the liquid cooling plate body 210, the bottom support beam 300 bears part of the weight of the liquid cooling plate body 210 and the battery cell assembly. Significant stress is generated at the connection between the bottom support beam 300 and the side beam 110. Without any treatment, this stress can easily lead to deformation or breakage during hoisting, transportation, and other operations. Therefore, in some embodiments of this application, at least one side beam 110 supports the bottom support beam 300.

[0052] The above embodiment provides at least one side beam 110 to support the bottom support beam 300, so that at least one side beam 110 simultaneously provides connection and support to the bottom support beam 300. By supporting the bottom support beam 300 with the side beam 110, the contact area between the bottom support beam 300 and the side beam 110 is increased, which can improve the situation of excessive stress at the connection between the bottom support beam 300 and the side beam 110, effectively avoid deformation or breakage at the connection of the bottom support beam 300 under complex working conditions, and improve the safety of the liquid-cooled battery box 10.

[0053] In some embodiments of this application, please refer to Figure 3 And refer to Figure 6 and Figure 7 At least one side beam 110 includes a beam body 111 and a support portion 112. The support portion 112 is connected to the side of the beam body 111 facing the receiving space 100a. The support portion 112 is positioned lower than the beam body 111. The liquid-cooled plate body 210 is supported on the beam body 111, and the bottom support beam 300 is supported on the support portion 112. By configuring the side beam 110 to include the aforementioned beam body 111 and support portion 112, the side beam 110 is generally stepped, providing space for supporting the liquid-cooled plate and the bottom support beam 300, respectively. Moreover, the stepped shape of the side beam 110 gives it higher strength, which can improve the overall load-bearing capacity and deformation resistance of the support frame 100.

[0054] Understandably, by supporting the bottom support beam 300 through the support part 112, not only can the weight of the liquid cooling plate and the battery cell assembly acting on the bottom support beam 300 be shared, but also the loads (such as vibration or impact) acting on the bottom support beam 300 from the outside can be transferred to the beam body 111 through the support part 112, and then distributed to the entire support frame 100 through the beam body 111.

[0055] In the multiple side beams 110 of the support frame 100, some side beams 110 connected to the bottom support beam 300 may be provided with support portions 112, or all side beams 110 may be provided with support portions 112. In one embodiment of this application, each side beam 110 is provided with the aforementioned support portion 112, so that all side beams 110 of the support frame 100 can be produced from the same production process, using the same equipment and processing technology, which can reduce production steps and improve production efficiency. Moreover, each side beam 110 is set with the same (or substantially the same) structure, which has good consistency and makes it easier to assemble multiple side beams 110, thereby improving the assembly efficiency of the support frame 100 and further improving production efficiency.

[0056] Please refer to the reference. Figure 3 , Figure 7 and Figure 8 The support portion 112 includes a first support portion 1121 and a second support portion 1122. The first support portion 1121 is connected between the beam body 111 and the second support portion 1122, and the first support portion 1121 is higher than the second support portion 1122. The bottom support beam 300 includes a beam plate 310 and an abutment portion 320. The abutment portion 320 protrudes from the beam plate 310 in a direction away from the liquid cooling plate body 210. The beam plate 310 is supported by the first support portion 1121, and the abutment portion 320 is supported by the second support portion 1122.

[0057] In the above embodiment, by configuring the support portion 112 and the bottom support beam 300 as described above, with the beam plate 310 of the bottom support beam 300 supported by the first support portion 1121 and the abutment portion 320 of the bottom support beam 300 supported by the second support portion 1122, the bottom support beam 300 is supported on two parts of the side beam 110 respectively, increasing the contact area and providing better support for the bottom support beam 300. Furthermore, since the bottom support beam 300 is supported on different parts of the side beam 110, the load borne by the bottom support beam 300 can be transferred and distributed along more paths to other parts of the support frame 100, achieving faster and better load transfer.

[0058] Understandably, the bottom support beam 300 can be connected to at least one of the first support portion 1121 and the second support portion 1122. In one embodiment of this application, the beam plate 310 of the bottom support beam 300 is connected and fixed to the first support portion 1121, combined with... Figure 7 As shown, the beam plate 310 can be connected to the first support part 1121 by screws or rivets.

[0059] It is understandable that the beam body 111, the first support part 1121, and the second support part 1122 can be connected structures, for example, the three can be welded together as a whole. The beam body 111, the first support part 1121, and the second support part 1122 can also be an integrally formed structure.

[0060] In one embodiment of this application, the side beam 110 is a roll-formed part, and the side beam 110 is formed by a roll forming process. The side beam 110 of this embodiment is manufactured by a roll forming process, which significantly reduces the production cost compared with the extruded side beams of related technologies (which use an extrusion process).

[0061] Please continue to refer to this. Figure 8 In some embodiments of this application, at least one side beam 110 further includes a reinforcing portion 113. The reinforcing portion 113 is located on the side of the support portion 112 away from the bottom support beam 300. One end of the reinforcing portion 113 is connected to the end of the support portion 112 away from the beam body 111, and the other end is connected to the beam body 111. By providing the reinforcing portion 113 connected to both the beam body 111 and the support portion 112, the overall strength of the side beam 110 is further enhanced, and the deformation resistance of the side beam 110 is improved.

[0062] Please refer to this again. Figure 1 The liquid-cooled battery box 10 also includes a module mounting beam 400, which is mounted on the liquid-cooled plate body 210. The battery cell assembly is positioned and fixed to the liquid-cooled plate body 210 via the module mounting beam 400. The battery cell assembly can be connected to the module mounting beam 400 via bolts or other fasteners to ensure that the battery cell assembly and the liquid-cooled plate body 210 can always maintain effective and reliable contact, avoiding gaps caused by separation due to vibration. This allows the heat generated by the battery cell assembly to be efficiently transferred to the liquid-cooled plate body 210 through the contact surface and dissipated through the liquid-cooled plate body 210, ensuring good heat dissipation.

[0063] The module mounting beam 400 can be configured as two. For some embodiments of this application, please refer to... Figure 9 The module mounting beam 400 includes a first module mounting beam 410 and a second module mounting beam 420. The first module mounting beam 410 and the second module mounting beam 420 can be arranged at intervals along the length direction of the liquid cooling plate body 210. The first module mounting beam 410 and the second module mounting beam 420 are respectively used to fix the bottom ends of the battery cell assembly.

[0064] Please refer to some embodiments of this application. Figure 10The first module mounting beam 410 is mounted on the liquid-cooled plate body 210 and is connected to the side beam 110. In this embodiment, by directly connecting the first module mounting beam 410 to the side beam 110, instead of connecting the second module mounting beam 420 via the bottom front crossbeam 301 as described below, no additional connection structure is needed for the first module mounting beam 410. This reduces the number of components in the liquid-cooled battery box 10 (reducing the number of bottom support beams 300), which not only helps reduce the overall weight of the liquid-cooled battery box 10 but also effectively lowers production costs. Furthermore, when the liquid-cooled battery box 10 is subjected to external vibration or impact, the load acting on the first module mounting beam 410 can be directly transferred to the side beam 110 and distributed to the entire support frame 100 through the side beam 110. This allows the load borne by the first module mounting beam 410 to be quickly transferred and dispersed, effectively reducing the load on the first module mounting beam 410 and preventing deformation of the first module mounting beam 410.

[0065] In some embodiments, combined with Figure 9 As shown, the liquid cooling plate body 210 includes a first end 210a and a second end 210b opposite to each other along its length. The second end 210b is provided with the aforementioned adapter pipe 220. The first module mounting beam 410 is located near the first end 210a of the liquid cooling plate body 210, and the second module mounting beam 420 is located near the second end 210b of the liquid cooling plate body 210. Since the adapter pipe 220 is located at the second end 210b, there are no other structures at the first end 210a that obstruct the first module mounting beam 410, allowing the distance between the first module mounting beam 410 and the side beam 110 of the support frame 100 to be very small, and enabling the first module mounting beam 410 to connect better with the side beam 110.

[0066] In some embodiments of this application, at least one side beam 110 includes the aforementioned beam body 111 and support portion 112. The support portion 112 is connected to the side of the beam body 111 facing the receiving space 100a. The support portion 112 of one side beam 110 is located below and connected to the first module mounting beam 410. In one embodiment of this application, please refer to... Figure 11 The support frame 100 includes a third side beam 1103, the support part 112 of the third side beam 1103 is located below the first module mounting beam 410, and the third side beam 1103 is connected to the first module mounting beam 410.

[0067] By utilizing the stepped structure of the aforementioned side beam 110, the support portion 112 extending toward the accommodating space 100a provides a connectable part for the first module mounting beam 410. Moreover, since the support portion 112 is located on the lower side of the first module mounting beam 410, the longitudinal connection between the first module mounting beam 410 and the support portion 112 can better distribute the weight borne by the first module mounting beam 410 to the support portion 112 (third side beam 1103).

[0068] Please refer to some embodiments of this application. Figure 11 A portion of the liquid cooling plate body 210 is located between the first module mounting beam 410 and the support portion 112. The first module mounting beam 410 can be connected to the support portion 112 via a first fastener 500 passing through the liquid cooling plate body 210. It is understood that the liquid cooling plate body 210 has a through hole for the first fastener 500 to pass through. The first module mounting beam 410 and the support portion 112 can be connected by threads or riveting, and the first fastener 500 can be a stud or a rivet.

[0069] Since the bottom support beam 300 supports the support portion 112 of other side beams 110, and the bottom support beam 300 also supports the liquid cooling plate body 210, the liquid cooling plate body 210 and the support portion 112 are spaced apart. Please refer again to some embodiments of this application. Figure 11 When the liquid-cooled plate body 210 and the support portion 112 are spaced apart, a mounting member 120 is provided between the liquid-cooled plate body 210 and the support portion 112. The mounting member 120 supports the liquid-cooled plate body 210, and a first fastener 500 passes through the mounting member 120. The liquid-cooled plate body 210 is connected to the first module mounting beam 410. Multiple mounting members 120 can be provided, and these multiple mounting members 120 can be arranged spaced apart along the length direction of the third side beam 1103.

[0070] In the above embodiment, an mounting member 120 is provided between the liquid cooling plate body 210 and the support portion 112. The mounting member 120 serves as an isolation element. When the first connecting bracket passes through the mounting member 120 and the liquid cooling plate body 210 connects to the first module mounting beam 410, a portion of the structure of the mounting member 120 is located between the liquid cooling plate body 210 and the first fastener 500. In this way, the mounting member 120 provides a force application point for the connection of the first fastener 500, preventing the first fastener 500 from directly applying force to the liquid cooling plate body 210. At the same time, when the first module mounting beam 410 and the mounting member 120 are connected through the first fastener 500, a longitudinal fastening force is generated on the liquid cooling plate body 210. Through the supporting effect of the mounting member 120 on the liquid cooling plate body 210, deformation of the liquid cooling plate body 210 due to excessive fastening force can be prevented.

[0071] It is understandable that by supporting the liquid cooling plate body 210 with the mounting part 120, the design thickness of the support part 112 is reduced, and the material usage of the side beam 110 is reduced accordingly, which helps to reduce the overall weight of the liquid cooling battery box 10.

[0072] In some embodiments, the mounting member 120 and the support portion 112 are separate structures, with the mounting member 120 connected to the support portion 112. It is understood that the mounting member 120 can be pre-connected to the support portion 112 of the third side beam before the support frame 100 and the liquid-cooled plate body 210 are assembled, in order to reduce the installation of loose parts during the final assembly process and improve production efficiency. In one embodiment of this application, the mounting member 120 can be welded to the support portion 112.

[0073] In some other embodiments of this application, the mounting component 120 may also be integrally formed with the support portion 112.

[0074] Please refer to the reference. Figure 2 , Figure 9 and Figure 11 In some embodiments, the first side beam 1101 and the third side beam 1103 are arranged opposite to each other and spaced apart. The first side beam 1101 is connected to the second end 210b of the liquid cooling plate (the end with the liquid inlet pipe and the liquid outlet pipe). The bottom support beam 300 includes a bottom front crossbeam 301, which is connected to the first side beam 1101. The second module mounting beam 420 is connected to the bottom front crossbeam 301.

[0075] Specifically, such as Figure 11 As shown, the second module mounting beam 420 corresponds to the bottom front crossbeam 301. The second module mounting beam 420 is connected to the bottom front crossbeam 301 via a second fastener 600 that passes through the liquid cooling plate body 210. The second fastener 600 can be a stud or a rivet.

[0076] This application also provides a battery pack, which includes a battery module and a liquid-cooled battery box 10 based on any of the above embodiments, wherein the battery module is mounted in the liquid-cooled battery box 10. Because the battery pack adopts all the technical solutions of the liquid-cooled battery box 10 of the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments.

[0077] The battery module may include battery cell components, which are supported on and in contact with the liquid cooling plate body 210. The battery cell components are positioned and fixed to the liquid cooling plate by the module mounting beam 400 to ensure effective contact between the battery cell components and the liquid cooling plate. The battery module may also include a battery cover, which is connected to the liquid cooling plate body 210, and the battery cover and the liquid cooling plate body 210 are closed to form a sealed space in which the battery cell components are disposed.

[0078] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A liquid-cooled battery box, used in battery modules, characterized in that, The liquid-cooled battery box includes a support frame, which includes multiple side beams and connecting blocks. The multiple side beams are connected in sequence to form a frame shape. At least one of the side beams has a connecting block inside it. The support frame is used to connect to external transfer equipment through the connecting block. At least one of the connecting blocks is located inside two adjacent side beams.

2. The liquid-cooled battery box according to claim 1, characterized in that, The plurality of side beams include a first side beam and a second side beam connected in sequence, the extension directions of the first side beam and the extension directions of the second side beam intersect, and the connecting block includes a first connecting block, a portion of the structure of the first connecting block being located inside the first side beam and the other portion of the structure being located inside the second side beam.

3. The liquid-cooled battery box according to claim 2, characterized in that, The first side beam extends along a first direction, and the second side beam extends along a second direction; the first connecting block includes a connecting block body and a connecting part, the connecting part passing through the connecting block body along the second direction, and the first connecting block is used to connect with the external transfer equipment through the connecting part; wherein, the length of the connecting block body along the first direction is greater than the length of the connecting block body along the second direction.

4. The liquid-cooled battery box according to claim 3, characterized in that, The connecting portion is configured as at least two, and the at least two connecting portions are arranged at intervals along the first direction; and / or, the first direction is the width direction of the support frame, and the second direction is the length direction of the support frame.

5. The liquid-cooled battery box according to any one of claims 1 to 4, characterized in that, The multiple side beams enclose an accommodating space. The liquid-cooled battery box also includes a liquid-cooled plate body and a bottom support beam. The liquid-cooled plate body is connected to the side beams, and part of its structure is located in the accommodating space. The bottom support beam is located below the liquid-cooled plate body. The side beams and the bottom support beam support the liquid-cooled plate body. The bottom support beam is connected to the side beams, and at least one side beam supports the bottom support beam.

6. The liquid-cooled battery box according to claim 5, characterized in that, At least one of the side beams includes a beam body and a support portion, the support portion being connected to the side of the beam body facing the receiving space, the support portion being lower than the beam body, the liquid cooling plate body being supported by the beam body, and the bottom support beam being supported by the support portion.

7. The liquid-cooled battery box according to claim 6, characterized in that, The support includes a first support and a second support, the first support being connected between the beam body and the second support, and the first support being higher than the second support. The bottom support beam includes a beam plate and an abutment portion. The abutment portion protrudes from the beam plate in a direction away from the liquid cooling plate body. The beam plate is supported by the first support portion, and the abutment portion is supported by the second support portion.

8. The liquid-cooled battery box according to claim 6, characterized in that, At least one of the side beams further includes a reinforcing portion located on the side of the support portion away from the bottom support beam. One end of the reinforcing portion is connected to the end of the support portion away from the beam body, and the other end is connected to the beam body.

9. The liquid-cooled battery box according to any one of claims 1 to 4, characterized in that, The multiple side beams enclose a receiving space. The liquid-cooled battery box also includes a liquid-cooled plate body and a first module mounting beam. The liquid-cooled plate body is connected to the side beams, and part of its structure is located in the receiving space. The first module mounting beam is disposed on the liquid-cooled plate body and is used to connect the cell assembly of the battery module. The first module mounting beam is connected to the side beams.

10. The liquid-cooled battery box according to claim 9, characterized in that, At least one of the side beams includes a beam body and a support portion, the support portion being connected to the side of the beam body facing the receiving space, wherein the support portion of one of the side beams is located below the first module mounting beam and is connected to the first module mounting beam.

11. The liquid-cooled battery box according to claim 10, characterized in that, A portion of the liquid cooling plate body is located between the first module mounting beam and the support portion. The first module mounting beam is connected to the support portion via a first fastener passing through the liquid cooling plate body.

12. The liquid-cooled battery box according to claim 11, characterized in that, The liquid cooling plate body and the support portion are spaced apart, and an installation component is provided between the liquid cooling plate body and the support portion, the installation component supporting the liquid cooling plate body; the first fastener passes through the installation component, and the liquid cooling plate body is connected to the first module mounting beam.

13. The liquid-cooled battery box according to any one of claims 1 to 4, characterized in that, At least a portion of the side beams are roll-formed components, and / or, at least a portion of the side beams define cavities within the cavities, and the connecting block is disposed within the cavities of at least a portion of the side beams.

14. A battery pack, characterized in that, It includes a battery module and a liquid-cooled battery box as described in any one of claims 1 to 13, wherein the battery module is mounted in the liquid-cooled battery box.

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