Liquid cooling box, box body and electric equipment

Abstract

The utility model discloses a liquid cooling box, a box body and electric equipment, and relates to the technical field of liquid cooling, the liquid cooling box comprises a low heat conduction member which is integrally formed and is provided with a placing chamber used for placing a battery module, and the placing chamber is provided with an inner bottom; the liquid cooling piece is connected to the surface of the inner bottom or arranged in an inner cavity of the inner bottom; the high-heat-conduction part is connected to the inner bottom, the side, away from the inner bottom, of the high-heat-conduction part is used for making contact with the battery module, and the side, close to the inner bottom, of the high-heat-conduction part is connected with the liquid cooling part or the inner bottom in an attached mode. When the liquid cooling box is applied to the installation of the battery module, the low-heat-conduction piece provides a heat preservation effect and a placement cavity for the installation of the battery module, so that the liquid cooling box has multiple purposes, is simple, convenient and reliable to assemble, and is relatively light in overall weight; the requirements of rapid heat dissipation and heat loss reduction are met through the high heat conduction piece and the low heat conduction piece respectively; and through the integral forming design of the low-heat-conduction part, the relative sealing performance of the placement cavity is ensured, the contact between the battery module and the outside is isolated, and the relatively good air tightness is ensured.

Description

Technical Field

[0001] This utility model relates to the field of liquid cooling technology, and more specifically, to a liquid cooling box. Furthermore, this utility model also relates to a housing and electrical equipment comprising the aforementioned liquid cooling box. Background Technology

[0002] A battery module is a component that provides stable electrical energy to power equipment and has a wide range of applications. When installing a battery module, at least the need for rapid, large-area heat dissipation and reduced heat loss must be considered to ensure that the battery module can operate under relatively reliable temperature conditions, making it suitable for low-temperature regions.

[0003] In related technologies, heat sinks with different thermal conductivity are set to meet the usage requirements respectively. However, in this case, a frame is also required to connect to the heat sink for the installation of the battery module. Due to differences in processing quality, the connection is not tight when the frame is set, and the airtightness of the connection cannot be guaranteed.

[0004] In conclusion, ensuring the airtightness of the frame connection is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a liquid-cooled box that provides insulation and a placement chamber for battery module installation through low thermal conductivity components, serving multiple purposes, simple and convenient to assemble, with good overall airtightness, and able to isolate the battery module from external contact. Another purpose of this utility model is to provide a housing and electrical equipment including the above-mentioned liquid-cooled box.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A liquid cooling box, comprising:

[0008] A low thermal conductivity component, wherein the low thermal conductivity component is integrally formed and has a placement chamber for placing a battery module, the placement chamber having an inner bottom;

[0009] A liquid cooling component, connected to the surface of the inner bottom or arranged in the inner cavity of the inner bottom;

[0010] A high thermal conductivity component is connected to the inner bottom. The side of the high thermal conductivity component away from the inner bottom is used to contact the battery module. The side of the high thermal conductivity component close to the inner bottom is attached to the liquid cooling component or the inner bottom.

[0011] Preferably, the liquid cooling components are arranged in a curved shape on the inner bottom, and the inner bottom is provided with a connection hole corresponding to the high thermal conductivity component, the connection hole being disposed away from the liquid cooling components.

[0012] Preferably, the connecting holes include at least a plurality of columns of first connecting holes and a plurality of columns of second connecting holes, wherein the first connecting holes are arranged along a first direction of the placement chamber, and the second connecting holes are arranged along a second direction of the placement chamber, wherein the first direction is perpendicular to the second direction.

[0013] Preferably, an adhesive is further provided between the low thermal conductivity component and the high thermal conductivity component, and the adhesive is disposed to avoid the connection hole and the liquid cooling component.

[0014] This utility model also provides a housing, comprising:

[0015] The liquid cooling box is any one of the liquid cooling boxes described above;

[0016] The outer frame, the edge of the liquid cooling box is connected to the inner wall of the outer frame for support.

[0017] Preferably, the outer frame includes a horizontal frame, a vertical frame, and connectors. The horizontal frame and the vertical frame each have a plurality of first cavities. The two ends of the connector are respectively inserted into the corresponding first cavities to fix the horizontal frame and the vertical frame.

[0018] Preferably, the first cavity is provided on the side of the horizontal frame and the vertical frame closer to the liquid cooling box, and the second cavity is provided on the side of the horizontal frame and the vertical frame away from the liquid cooling box, and the cavity wall of the second cavity is at least partially inclined relative to the wall of the first cavity.

[0019] Preferably, the top of the liquid cooling box extends away from the center of the placement chamber and is provided with a connecting part, the connecting part is connected to the horizontal frame or the vertical frame, and the edge of the connecting part does not extend beyond the edge of the horizontal frame or the vertical frame.

[0020] Preferably, the liquid cooling box is provided with an inner frame, and the side walls and the inner bottom of the liquid cooling box are connected to the inner frame, so that the inner frame can divide the placement chamber into several independent spaces.

[0021] This utility model also provides an electrical device, including the housing described in any of the above claims and a battery module disposed within the housing.

[0022] The liquid-cooled box provided by this utility model includes a low thermal conductivity component, a high thermal conductivity component, and a liquid cooling component. The low thermal conductivity component has a placement chamber for placing the battery module, and the placement chamber has an inner bottom. The liquid cooling component is connected to the surface of the inner bottom or arranged in the inner cavity of the inner bottom, while the high thermal conductivity component is connected to the inner bottom and can transfer heat from the battery module to the liquid cooling component to achieve a cooling effect. The low thermal conductivity component can provide both heat preservation and a placement chamber for battery module installation, serving multiple purposes. The overall weight of the liquid-cooled box formed by the liquid cooling component and the high thermal conductivity component is small, which can effectively reduce weight. In addition, the low thermal conductivity component is integrally molded, which can simultaneously meet the needs of heat preservation and providing a placement chamber. When assembling the liquid-cooled box, the liquid cooling component, the high thermal conductivity component, and the low thermal conductivity component can be directly installed, simplifying the installation process and making the installation between components simple and quick, reducing the difficulty of assembly. The integral molding of the low thermal conductivity component directly seals the placement chamber from all sides, isolating the battery module from external contact, ensuring good airtightness, and ensuring reliable operation of the battery module. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the liquid cooling box provided by this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the box provided by this utility model;

[0026] Figure 3 for Figure 2 Exploded view of the overall structure;

[0027] Figure 4 for Figure 3 A magnified view of a portion at point A;

[0028] Figure 5 for Figure 4 An explosion diagram;

[0029] Figure 6 This is a schematic diagram of a horizontal or vertical border structure.

[0030] Figure 7 This is a schematic diagram of the outer frame structure provided by this utility model;

[0031] Figure 8 This is a partial schematic diagram of the box body provided by this utility model;

[0032] Figure 9 This is a schematic diagram of the inner frame of this utility model detached from the outer frame and the liquid cooling box.

[0033] Figure 10 This is a schematic diagram of the internal frame structure provided by this utility model;

[0034] Figure 11 This is a schematic diagram of the structure of the L-shaped connecting piece provided by this utility model.

[0035] Figures 1-11 In the accompanying drawings, the reference numerals include:

[0036] 1-Outer frame; 2-Liquid cooling box; 3-Inner frame;

[0037] 11-Horizontal frame; 12-Vertical frame; 13-Connector; 14-Bolt; 21-High thermal conductivity component; 22-Low thermal conductivity component; 23-Adhesive component; 24-Rivet nut; 25-Liquid cooling component; 31-Crossbeam; 32-Longitudinal beam; 33-L-shaped connecting piece; 34-Side rivet;

[0038] 101-First cavity; 102-Second cavity; 111-Transverse connecting hole; 112-Transverse hole; 113-First fixing hole; 122-Longitudinal connecting hole; 123-Second fixing hole; 131-First connecting end; 132-Second connecting end; 221-Connecting part; 222-Side wall; 223-Inner bottom; 224-Connecting hole; 225-Placement chamber; 311-Bottom fixing hole; 331-First connecting plate; 332-Second connecting plate. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] The core of this invention is to provide a liquid-cooled box with a relatively small overall weight, which ensures rapid and large-area heat dissipation of the battery module, reduces heat loss, and allows for reliable installation. It also isolates the battery module from external contact, ensuring good airtightness. Another core aspect of this invention is to provide a housing and electrical equipment comprising the aforementioned liquid-cooled box.

[0041] The liquid-cooled box provided by this utility model includes a low thermal conductivity component 22, a liquid cooling component 25, and a high thermal conductivity component 21. Please refer to [reference needed]. Figure 1 .

[0042] The low thermal conductivity component 22 is integrally formed and has a placement chamber 225 for placing the battery module. The placement chamber 225 can form a space to cover and limit the battery module, so that the battery module can be reliably fixed in the liquid cooling box.

[0043] It should be noted that one-piece molding specifically refers to molding in one step through processes such as compression molding and vacuum injection.

[0044] In this embodiment, the bottom and circumference of the placement chamber 225 of the low thermal conductivity component 22 are integrally formed, making the placement chamber 225 relatively closed except for the opening, eliminating gaps and isolating the battery module from external contact, thus ensuring good airtightness. The opening here specifically refers to an opening that facilitates the insertion of the battery module, such as one located at the top. Furthermore, the integrally formed design of the low thermal conductivity component 22 also ensures reliable and stable battery module installation. In summary, the low thermal conductivity component 22 simultaneously achieves the operational effects of reducing heat loss, reliably and stably installing the battery module, and ensuring good airtightness.

[0045] The liquid cooling component 25 is connected to the inner bottom 223 of the placement chamber 225 or disposed in the inner cavity of the inner bottom 223 of the placement chamber 225. The high thermal conductivity component 21 is connected to the inner bottom 223, and the side of the high thermal conductivity component 21 away from the inner bottom 223 is used to contact the battery module for heat conduction. By setting the high thermal conductivity component 21, the heat of the battery module can be absorbed quickly, realizing the rapid heat dissipation of the battery module.

[0046] In one specific embodiment, the liquid cooling component 25 is arranged within the inner cavity of the inner bottom 223. In this case, the inner bottom 223 has an inner cavity capable of accommodating the liquid cooling component 25. In actual use, the heat of the battery module can be transferred to the liquid cooling component 25 through the high thermal conductivity component 21 to achieve heat dissipation of the battery module.

[0047] In the second embodiment, the liquid cooling component 25 is connected to the inner bottom 223. In this case, the liquid cooling component 25 is directly attached to the surface of the inner bottom 223. During actual use, the heat of the battery module can be directly transferred to the liquid cooling component 25 for heat dissipation. It should be noted that this embodiment does not require the high thermal conductivity component 21, but the arrangement area of ​​the liquid cooling component 25 needs to be large enough to improve heat transfer efficiency. Furthermore, the side of the liquid cooling component 25 away from the inner bottom 223 needs to form a flat surface to ensure reliable installation of the battery module relative to the liquid cooling box.

[0048] In the third embodiment, the liquid cooling component 25 is connected to the surface of the inner bottom 223 on one side and to the high thermal conductivity component 21 on the other side. In actual use, the heat of the battery module is transferred to the liquid cooling component 25 through the high thermal conductivity component 21 to dissipate heat from the battery module. Similarly, the side of the liquid cooling component 25 away from the inner bottom 223 needs to be flat to ensure reliable installation of the battery module relative to the liquid cooling box.

[0049] The side of the liquid-cooled component 25 away from the inner bottom 223 mentioned above needs to be formed in a planar manner, such as... Figure 1 As shown, to ensure reliable and stable installation of the battery module relative to the liquid cooling box, an adhesive component 23 can be used to fill (either completely or partially, depending on the actual installation requirements) several gaps formed between the liquid cooling component 25 and the inner bottom 223. This allows the adhesive component 23 and the liquid cooling component 25 to form a relatively flat top plane, and also enables the connection between the high thermal conductivity component 21 and the inner bottom 223. Alternatively, the pipes of the liquid cooling component 25 can be made into square pipes or other types of pipes with flat surfaces. The flat surface of the pipe near the high thermal conductivity component 21 can cooperate with the flat surface of the adhesive component 23 near the high thermal conductivity component 21 to form a relatively flat top plane, which also ensures reliable installation of the battery module relative to the liquid cooling box.

[0050] In this embodiment, the liquid cooling component 25 is specifically a component with a cooling medium or a pipe component containing a cooling medium, such as refrigerant or coolant.

[0051] In this embodiment, it should be noted that the terms "low thermal conductivity component 22" and "high thermal conductivity component 21" are relative, corresponding to low thermal conductivity and high thermal conductivity, respectively. Specifically, the high thermal conductivity component 21 enables the heat of the battery module to be quickly dissipated over a large area; while the low thermal conductivity component 22 reduces the rate of temperature exchange between the liquid cooling box and the outside environment, thereby reducing heat loss and improving the temperature control accuracy of the battery module. This allows the battery module to operate under relatively reliable temperature conditions, especially in low-temperature areas, ensuring reliable operation of the battery module.

[0052] In this embodiment, taking a specific implementation as an example, the high thermal conductivity component 21 is a metal component, such as an aluminum plate; while the low thermal conductivity component 22 is a glass fiber composite component or a carbon fiber composite component. Through the combined arrangement of the high thermal conductivity component 21 and the low thermal conductivity component 22, heat dissipation can be achieved through the large area of ​​the high thermal conductivity component 21 and the liquid cooling component 25 with cooling medium, while the low thermal conductivity component 22 made of glass fiber composite or carbon fiber composite can be used for heat preservation, thus resolving the contradiction between heat dissipation and heat preservation in thermal management.

[0053] Furthermore, in this application, the low thermal conductivity component 22 is integrally molded, which can provide heat preservation, provide a placement chamber 225 for reliable and stable installation of the battery module, and isolate the battery module from external contact to ensure good airtightness. It serves multiple purposes. The overall weight of the liquid cooling box formed by the liquid cooling component 25 and the high thermal conductivity component 21 is small, which can effectively reduce weight. The low thermal conductivity component 22 simultaneously meets the requirements of heat preservation and providing a placement chamber. When assembling the liquid cooling box, the liquid cooling component 25, the high thermal conductivity component 21, and the integrally molded low thermal conductivity component 22 can be directly installed, which simplifies the installation process, makes the installation between components simple and quick, and reduces the difficulty of assembly.

[0054] Based on the above embodiments, please refer to Figure 1 , Figure 9 The liquid cooling component 25 is arranged in a curved shape on the inner bottom 223. The inner bottom 223 is provided with a connection hole 224 corresponding to the high thermal conductivity component 21, and the connection hole 224 is set away from the liquid cooling component 25. The curved shape here, such as a snake shape, a loop shape, or an S shape, can increase the contact area between the liquid cooling component 25 and the high thermal conductivity component 21, so as to accelerate the heat dissipation of the battery module.

[0055] The liquid cooling component 25 is specifically arranged on the inner bottom 223. The connecting hole 224 on the inner bottom 223 can be matched with the hole on the high thermal conductivity component 21, so that the high thermal conductivity component 21 can be reliably connected to the low thermal conductivity component 22. This ensures that the liquid cooling component 25 located between the high thermal conductivity component 21 and the inner bottom 223 has good stability and reliability, thus guaranteeing the reliability of the entire liquid cooling box.

[0056] In this embodiment, the connection hole 224 can be positioned to avoid the liquid cooling component 25. The specific size and shape are not limited and can be flexibly designed according to the actual situation.

[0057] Based on any of the above embodiments, please refer to Figure 1 The connecting hole 224 includes at least a number of first connecting holes and a number of second connecting holes. The first connecting holes are arranged along a first direction of the placement chamber 225, and the second connecting holes are arranged along a second direction of the placement chamber 225. The first direction is perpendicular to the second direction.

[0058] In this embodiment, the first direction can be longitudinal or transverse, and the corresponding second direction is transverse or longitudinal. Of course, longitudinal and transverse directions correspond to the length and width directions of the low thermal conductivity component 22. This arrangement of the connecting holes 224 ensures that the high thermal conductivity component 21 can be reliably connected to the low thermal conductivity component 22, avoiding vibrations or disruptions to heat dissipation caused by unstable component connections.

[0059] In this embodiment, each of the several columns may include several holes, and the specific number is set according to the actual reliable fastening situation, without too much restriction.

[0060] Based on any of the above embodiments, please refer to Figure 1 An adhesive component 23 is also provided between the low thermal conductivity component 22 and the high thermal conductivity component 21. The adhesive component 23 is provided to avoid the connection hole 224 and the liquid cooling component 25.

[0061] To further ensure the reliable and stable connection of the internal components of the liquid cooling box, in addition to the fasteners used in the connection holes 224, a high-temperature resistant adhesive 23 is also provided to bond the parts of the low thermal conductivity component 22, except for the area corresponding to the liquid cooling component 25 and the area corresponding to the connection holes 224, to the high thermal conductivity component 21. This strengthens the fixing effect between the high thermal conductivity component 21 and the low thermal conductivity component 22, and naturally also strengthens the stability of the liquid cooling component 25.

[0062] In addition to the liquid-cooled box 2 described in the above embodiment, this utility model also provides a housing, which further includes an outer frame 1, with the edge of the liquid-cooled box 2 connected to the inner wall of the outer frame 1 for support.

[0063] Please refer to Figure 1 , Figure 2 The edge of the liquid cooling box 2 is actually the outer periphery of the low thermal conductivity component 22 connected to the outer frame 1. The low thermal conductivity component 22 is an integrally molded part. The liquid cooling box 2, as its assembly, is built into the outer frame 1. The low thermal conductivity component 22 isolates the battery module from the contact between the battery module and the outer frame 1, avoiding the risk of uncontrollable sealing of the placement chamber 225 and ensuring the reliable operation of the battery module.

[0064] Based on the above embodiments, please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 The outer frame 1 includes a horizontal frame 11, a vertical frame 12, and a connector 13. Both the horizontal frame 11 and the vertical frame 12 have several first cavities 101. The two ends of the connector 13 are respectively inserted into the corresponding first cavities 101 to fix the horizontal frame 11 and the vertical frame 12.

[0065] The horizontal frame 11 and the vertical frame 12 can be connected by L-shaped connectors 13. The two horizontal frames 11 and the two vertical frames 12 are connected by four connectors 13 to form the overall structure of the outer frame 1.

[0066] Please refer to Figure 10The two ends of the connector 13 are specifically a first connecting end 131 and a second connecting end 132. The first connecting end 131 is inserted into the first cavity 101 of the horizontal frame 11 and passes through the first connecting end 131 and the cavity wall of the first cavity 101 by a bolt 14. The second connecting end 132 is inserted into the first cavity 101 corresponding to the vertical frame 12 and passes through the second connecting end 132 and the cavity wall of the first cavity 101 corresponding to the vertical frame 12 by a bolt, so as to achieve a reliable connection between the horizontal frame 11 and the vertical frame 12.

[0067] The first connecting end 131 and the second connecting end 132 can be connected by a block structure. The block structure is set on the premise that the first connecting end 131 and the second connecting end 132 are set independently. If the first connecting end 131 and the second connecting end 132 can be processed by integral molding, then there is no need to set a block structure.

[0068] In this embodiment, it should be noted that both the horizontal frame 11 and the vertical frame 12 are hollow structures, which can reduce the overall weight of the outer frame 1, thus achieving lightweighting of the box. Specifically, there can be multiple first cavities 101 to ensure the structural strength of the hollow horizontal frame 11 and the vertical frame 12.

[0069] Based on any of the above embodiments, please refer to Figure 3 , Figure 5 A first cavity 101 is provided on the side of the horizontal frame 11 and the vertical frame 12 close to the liquid cooling box 2, and a second cavity 102 is provided on the side of the horizontal frame 11 and the vertical frame 12 away from the liquid cooling box 2. The cavity wall of the second cavity 102 is at least partially inclined relative to the wall of the first cavity 101.

[0070] Both the horizontal frame 11 and the vertical frame 12 have two parts. One part is close to the liquid cooling box 2 and can be connected to the connector 13. The other part is away from the liquid cooling box 2. This part has multiple second cavities 102. By setting the cavity walls of the second cavities 102 to be inclined, the structural strength of the outer frame 1 can be further guaranteed. It can also better avoid structural deformation and twisting due to large loads, and form a better stress distribution, thus ensuring the torsional resistance of the horizontal frame 11 and the vertical frame 12.

[0071] In this embodiment, it should be noted that another part of the second cavity 102 is also used for the installation of the housing relative to the electrical equipment. For example, if the electrical equipment is a vehicle, a transverse connecting hole 111 is provided at the corresponding position of the second cavity 102 of the transverse frame 11, and a longitudinal connecting hole 122 is provided at the corresponding position of the second cavity 102 of the longitudinal frame 12. The housing can be reliably installed relative to the vehicle body by inserting a threaded connector through the longitudinal connecting hole 122 and the vehicle body, and by inserting a threaded connector through the transverse connecting hole 111, and by tightening with a nut.

[0072] Specifically, the horizontal connecting hole 111 and the vertical connecting hole 122 can be set through the second cavity 102, or they can be set partially through it. The choice can be made based on the actual installation situation.

[0073] Based on any of the above embodiments, please refer to Figure 3 The top of the liquid cooling box 2 extends away from the center of the placement chamber 225 and is provided with a connecting part 221, which is connected to the horizontal frame 11 or the vertical frame 12.

[0074] In this embodiment, the connecting part 221 is the part that can connect with the outer frame 1. This avoids the need to machine holes in the side wall 222 to connect with the outer frame 1 to ensure airtightness and does not occupy the space of the placement chamber 225. Specifically, the connecting part 221 is set as a component that extends relative to the center direction of the placement chamber 225. Specifically, the connecting part 221, the side wall 222, and the inner bottom 223 are integrally formed components.

[0075] After the liquid cooling box 2 is installed inside the outer frame 1, the connecting part 221 will abut against the corresponding position of the first cavity 101 of the horizontal frame 11 or the corresponding position of the first cavity 101 of the vertical frame 12. By means of the rivet nut 24, the connecting part 221 can be connected to the horizontal hole 112 of the horizontal frame 11, and the connecting part 221 can also be connected to the vertical connecting hole 122 of the vertical frame 12, so as to ensure the reliable fastening effect of the liquid cooling box 2 and the outer frame 1 and ensure the stability of the liquid cooling box 2.

[0076] The edge of the connecting portion 221 does not extend beyond the edge of the horizontal frame 11 or the vertical frame 12. This arrangement is specifically to avoid affecting the connection between the outer frame 1 and the electrical equipment. Specifically, "the edge of the connecting portion 221 does not extend" means that the edge of the connecting portion 221 coincides with the edge of the horizontal frame 11 or the vertical frame 12, or there is a distance between the edge of the horizontal frame 11 or the vertical frame 12 and the edge of the connecting portion 221.

[0077] Based on any of the above embodiments, please refer to Figure 2 , Figure 3The liquid cooling box 2 is provided with an inner frame 3. The side wall 222 and the inner bottom 223 of the liquid cooling box 2 are connected to the inner frame 3 so that the inner frame 3 can divide the placement chamber 225 into several independent spaces, and the several independent spaces can place other components of the battery pack, battery or battery module.

[0078] In conjunction with the foregoing, the low thermal conductivity component 22 is designed as an integral piece to ensure airtightness and prevent gas exchange in the battery module. Specifically, the sidewall 222 and the inner bottom 223 are integrally formed, and the sidewall 222 and the inner bottom 223 together form the placement chamber 225.

[0079] The inner frame 3 is described relative to the outer frame 1, and is substantially located within the placement chamber 225. In one specific embodiment, the inner frame 3 consists of multiple crossbeams 31 and multiple longitudinal beams 32 connected by L-shaped connecting pieces 33. The inner frame 3 is built into the liquid-cooled box 2 and connected to the inner wall of the placement chamber 225. The number of beams can be customized based on the actual required number of independent spaces and the overall size of the battery module.

[0080] Preferably, both the crossbeam 31 and the longitudinal beam 32 are glass fiber pultruded composite profiles or carbon fiber pultruded composite profiles, and the L-shaped connecting piece 33 is a glass fiber or carbon fiber reinforced nylon part. More specifically, the crossbeam 31 and the longitudinal beam 32 are profiles obtained by pultrusion of continuous glass fiber or continuous carbon fiber cured with resin, and the L-shaped connecting piece 33 is formed by adding glass fiber particles to nylon resin to form granules, which are then injection molded into the part. The glass fiber or carbon fiber reinforced nylon material used in the L-shaped connecting piece 33 has the characteristics of high strength and low density, ensuring the structural strength of the connection between the crossbeam 31 and the longitudinal beam 32, while also reducing weight.

[0081] In one specific implementation, please refer to Figure 11 , Figure 2 The L-shaped connecting piece 33 includes a first connecting plate 331 and a second connecting plate 332 perpendicularly arranged thereto. Specifically, when using the L-shaped connecting piece 33, in one case, the first connecting plate 331 adheres to the side of the crossbeam 31, and the second connecting plate 332 adheres to the side of the longitudinal beam 32, to achieve the effect of fixing the crossbeam 31 and the longitudinal beam 32; in another case, the first connecting plate 331 adheres to the side of the transverse frame 11, and the second connecting plate 332 adheres to the side of the longitudinal beam 32, to achieve the effect of fixing the transverse frame 11 and the longitudinal beam 32; in yet another case, the first connecting plate 331 adheres to the crossbeam 31, and the second connecting plate 332 adheres to the longitudinal frame 12, to achieve the effect of fixing the crossbeam 31 and the longitudinal frame 12. In all three cases, the L-shaped connecting piece 33, the inner side of the outer frame 1, the side wall of the liquid cooling box 2, and the through holes on the inner frame 3 are connected by side rivets 34. This assembly method allows for disassembly and replacement, facilitating long-term maintenance.

[0082] In this embodiment, please refer to Figure 2 , Figure 7 , Figure 8 , Figure 11 The outer frame 1 has a first fixing hole 113 on the side of the horizontal frame 11 close to the side wall 222 of the liquid cooling box 2, and a second fixing hole 123 on the side of the vertical frame 12 close to the side wall 222 of the liquid cooling box 2. By passing the side rivet 34 through the L-shaped connecting piece 33, the side wall 222, and the first fixing hole 113, and by passing the side rivet 34 through the L-shaped connecting piece 33, the side wall 222, and the second fixing hole 123, the liquid cooling box 2 and the inner and outer frames can be reliably fixed, ensuring good stability.

[0083] In this embodiment, the crossbeam 31 and the longitudinal beam 32 can be provided with multiple through-holes to ensure structural strength while meeting the requirements for lightweighting.

[0084] In this embodiment, bottom fixing holes 311 are provided at the bottom of the crossbeam 31 and the longitudinal beam 32, and through holes are also provided in the liquid cooling box 2. The crossbeam 31, the longitudinal beam 32 and the liquid cooling box 2 are connected by rivets, which can further strengthen the fixation of the liquid cooling box 2 and increase the overall stability of the box.

[0085] In addition to the aforementioned housing, this utility model also provides an electrical device, including the housing described in any of the above embodiments and a battery module disposed within the housing. The electrical device includes, but is not limited to, vehicles, and can be any device powered by the battery module.

[0086] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0087] The liquid-cooled box, housing, and electrical equipment provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make several improvements and modifications to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A liquid cooling box, characterized by, The application relates to a battery module cooling device, which comprises the following parts: a low-thermal-conductivity part (22) which is integrally formed and is provided with a placing cavity (225) for placing a battery module, the placing cavity (225) being provided with an inner bottom (223); a liquid cooling part (25) which is connected to the surface of the inner bottom (223) or is arranged in the inner cavity of the inner bottom (223); a high-thermal-conductivity part (21) which is connected to the inner bottom (223), the side of the high-thermal-conductivity part (21) which is far away from the inner bottom (223) being used for contacting the battery module, and the side of the high-thermal-conductivity part (21) which is close to the inner bottom (223) being connected to the liquid cooling part (25) or the inner bottom (223).

2. The liquid cooling box according to claim 1, characterized in that, The liquid cooling part (25) is arranged in a curved shape on the inner bottom (223), the inner bottom (223) is provided with connecting holes (224) corresponding to the high-thermal-conductivity part (21), and the connecting holes (224) are arranged away from the liquid cooling part (25).

3. The liquid cooling box of claim 2, wherein, The connecting holes (224) at least comprise a plurality of rows of first connecting holes and a plurality of rows of second connecting holes, the first connecting holes are arranged along a first direction of the placing cavity (225), the second connecting holes are arranged along a second direction of the placing cavity (225), and the first direction is perpendicular to the second direction.

4. The liquid cooling box of claim 3, wherein, An adhesive part (23) is further arranged between the low-thermal-conductivity part (22) and the high-thermal-conductivity part (21), and the adhesive part (23) is arranged away from the connecting holes (224) and the liquid cooling part (25).

5. A case characterized by comprising: The application further relates to a battery module cooling device, which comprises the following parts: a liquid cooling box (2) which is the liquid cooling box (2) as claimed in any one of claims 1 to 4; an outer frame (1), and the edges of the liquid cooling box (2) are connected to the inner wall of the outer frame (1) to obtain support.

6. The case of claim 5, wherein, The outer frame (1) comprises a horizontal frame (11), a vertical frame (12) and a connecting part (13), the horizontal frame (11) and the vertical frame (12) each have a plurality of first cavities (101), and the two ends of the connecting part (13) are respectively inserted into corresponding first cavities (101) to fix the horizontal frame (11) and the vertical frame (12).

7. The case of claim 6, wherein, The side of the horizontal frame (11) and the vertical frame (12) which is close to the liquid cooling box (2) is provided with the first cavities (101), the side of the horizontal frame (11) and the vertical frame (12) which is far away from the liquid cooling box (2) is provided with second cavities (102), and the cavity wall of the second cavities (102) is at least partially arranged in an inclined manner relative to the wall of the first cavities (101).

8. The case of claim 7, wherein, The top of the liquid cooling box (2) is provided with a connecting part (221) which is arranged in a direction away from the center of the placing cavity (225), the connecting part (221) is connected to the horizontal frame (11) or the vertical frame (12), and the edge of the connecting part (221) does not exceed the edge of the horizontal frame (11) or the vertical frame (12).

9. The case of claim 8, wherein, The liquid cooling box (2) is internally provided with an inner frame (3), the side wall (222) and the inner bottom (223) of the liquid cooling box (2) are connected with the inner frame (3), so that the inner frame (3) can divide the placing chamber (225) into several independent spaces.

10. An electric device, characterized by The battery module is arranged in the box body of any one of claims 5 to 9.

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