Battery box body, battery pack and electric equipment

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a battery box body, a battery pack and electric equipment. The battery box body comprises a box shell, wherein the box shell comprises a bottom plate, and a first side plate structure and a second side plate structure which are oppositely arranged in a first direction; the heat exchange plate is arranged in the box shell, the two opposite ends, in the first direction, of the heat exchange plate are the first end and the second end correspondingly, the first end is connected with the first side plate structure, the second end is connected with the second side plate structure, and the position, close to the first end, of the top face of the heat exchange plate is provided with a liquid inlet and outlet connector assembly and a drainage hole penetrating through the heat exchange plate; the heat exchange plate is obliquely arranged relative to the bottom plate, and the height of the second end is larger than that of the first end. According to the utility model, the cooling liquid remained on the surface of the heat exchange plate can be guided to the drain holes and is reserved to the space below the heat exchange plate through the drain holes, so that the phenomenon of corrosion and liquid leakage of a battery shell caused by electrolytic reaction due to long-term accumulation of the cooling liquid is prevented, the service life of a battery is prolonged, and the performance of the battery is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and particularly relates to a battery box body, a battery and an electrical equipment. Background Art

[0002] With the application and popularization of new energy technologies, the safety and reliability of battery packs, which are the core components of new energy vehicles, during use have also become the focus of user attention. Among them, the application of liquid cooling plates plays a crucial role in the safety and service life of battery packs. Since there is a risk of coolant leakage during the use of liquid cooling plates, the leaked coolant remains on the surface of the liquid cooling plate. Long-term accumulation is likely to cause a potential difference between the battery housing and the box body, resulting in insulation failure. The electrolytic reaction of the coolant remaining on the surface of the liquid cooling plate will cause corrosion of the battery housing and then lead to liquid leakage. Although some liquid cooling plate solutions with diversion structures are provided in the prior art, they only act on local areas of the liquid cooling plate and it is difficult to achieve the overall diversion and anti-corrosion effects of the liquid cooling plate. Summary of the Utility Model

[0003] In view of this, in order to improve at least one of the above problems existing in the prior art, the utility model provides a battery box body, a battery pack and an electrical equipment.

[0004] The technical solution of the utility model provides a battery box body, including: a box shell, the box shell includes a bottom plate and a first side plate structure and a second side plate structure oppositely arranged in a first direction; a heat exchange plate, arranged inside the box shell, the opposite ends of the heat exchange plate in the first direction are respectively a first end and a second end, the first end is connected to the first side plate structure, the second end is connected to the second side plate structure, and an inlet and outlet liquid interface assembly and a drain hole penetrating the heat exchange plate are arranged at a position on the top surface of the heat exchange plate close to the first end; wherein, the heat exchange plate is inclined relative to the bottom plate, and the height of the second end is greater than the height of the first end.

[0005] In a feasible implementation manner, a first groove is arranged at a position on the top surface of the heat exchange plate close to the first end, the first groove is communicated with the drain hole, and the inlet and outlet liquid interface assembly is arranged in the first groove.

[0006] In a feasible implementation manner, at least one diversion groove and at least one drain hole are arranged on the top surface of the heat exchange plate; the diversion grooves extend along the first direction, and each diversion groove is communicated with a corresponding drain hole.

[0007] In a feasible implementation manner, there is a gap space between the bottom surface of the heat exchange plate and the bottom plate; the battery box body further includes a liquid absorption member, the liquid absorption member is arranged in the gap space and is used for absorbing the liquid flowing into the gap space from the drain hole; the liquid absorption member is arranged corresponding to the diversion groove.

[0008] In a feasible implementation, a liquid leakage detector is disposed in the first groove for detecting whether there is liquid leakage in the first groove, and the liquid leakage detector is adapted to transmit the detection result to the control system of the battery.

[0009] In a feasible implementation, the first side plate structure includes a first side plate body and a first protruding portion provided on the inner side wall of the first side plate body, and the second side plate structure includes a second side plate body and a second protruding portion provided on the inner side wall of the second side plate body. The top surface of the first protruding portion is flush with the top surface of the second protruding portion for supporting the battery assembly. Among them, the bottom surface of the second protruding portion is higher than the bottom surface of the first protruding portion. The position on the top surface of the heat exchange plate close to the first end is connected to the bottom surface of the first protruding portion, and the position on the top surface of the heat exchange plate close to the second end is connected to the bottom surface of the second protruding portion.

[0010] In a feasible implementation, the top surface of the heat exchange plate includes a first connection surface, a main surface portion, and a second connection surface that are sequentially connected in a first direction. Both the first connection surface and the second connection surface are flat surfaces, and the height of the second connection surface is greater than the height of the first connection surface. The first connection surface is attached to and connected to the bottom surface of the first protruding portion, the second connection surface is attached to and connected to the bottom surface of the second protruding portion, and the main surface portion is an inclined surface inclined along the first direction.

[0011] In a feasible implementation, the top surface of the heat exchange plate is an inclined surface inclined relative to the first direction. The bottom surface of the first protruding portion is parallel to the top surface of the heat exchange plate and is attached to and connected to the position on the top surface of the heat exchange plate close to the first end. The bottom surface of the second protruding portion is parallel to the top surface of the heat exchange plate and is attached to and connected to the position on the top surface of the heat exchange plate close to the second end.

[0012] The second aspect technical solution of the present utility model provides a battery pack, including: the battery box body in any one of the above first aspects; a battery assembly disposed in the battery box body and connected to the box shell of the battery box body. Among them, a heat conducting member is filled between the heat exchange plate of the battery box body and the battery assembly.

[0013] The third aspect technical solution of the present utility model provides an electrical device, including the battery pack in any one of the above second aspects.

[0014] The beneficial effects in the above technical solutions of the present utility model are reflected in:

[0015] The structure and setting method of the heat exchange plate are improved, which can make the coolant remaining on the surface of the heat exchange plate flow to the area close to the first end and flow to the space below the heat exchange plate through the drain hole, realizing timely liquid drainage, thereby preventing the phenomenon that the battery shell is corroded and leaks due to the long-term accumulation of the coolant and electrolytic reaction, being able to play a protective effect on the battery assembly, and keeping the battery shell insulated from the box shell, which is beneficial to extending the battery service life and improving the battery performance. Brief Description of the Drawings

[0016] Figure 1 Shown is a perspective view of a battery box body provided by an embodiment of the present utility model.

[0017] Figure 2 Shown is a top view of a battery box body provided by an embodiment of the present utility model.

[0018] Figure 3 Shown is a side view of the internal structure of a battery box body provided by an embodiment of the present utility model.

[0019] Figure 4 Shown is an exploded view of a battery box body provided by an embodiment of the present utility model.

[0020] Figure 5 Shown is a partial view of the internal structure of a battery box body provided by an embodiment of the present utility model.

[0021] Figure 6 Shown is a schematic view of a heat exchange plate and a liquid absorption member provided by an embodiment of the present utility model.

[0022] Figure 7 Shown is a side view of the internal structure of a battery box body provided by an embodiment of the present utility model.

[0023] Figure 8 Shown is a side view of the internal structure of another battery box body provided by an embodiment of the present utility model.

[0024] Figure 9 Shown is a side view of the internal structure of a battery pack provided by an embodiment of the present utility model.

[0025] Figure 10 Shown is a schematic block diagram of an electrical device provided by an embodiment of the present utility model.

[0026] Among them, in the above figures, arrow F1 represents the first direction, arrow F2 represents the second direction, and arrow F3 is the height direction.

[0027] Description of the Reference Numerals:

[0028] 100 Battery box body;

[0029] 1 Box shell, 11 Bottom plate, 12 First side plate structure, 121 First protruding portion, 122 First side plate body, 13 Second side plate structure, 131 Second protruding portion, 132 Second side plate body, 14 Gap space, 15 Third side plate structure, 16 Fourth side plate structure, 17 Partition;

[0030] 2 heat exchange plates, 21 first end, 22 second end, 23 liquid inlet and outlet interface assembly, 231 liquid inlet interface, 232 liquid outlet interface, 24 drain hole, 25 first groove, 26 diversion groove, 271 first connection surface, 272 main surface portion, 273 second connection surface;

[0031] 31 liquid absorption member, 32 liquid leakage detector;

[0032] 400 battery pack, 410 battery assembly, 420 heat conducting member;

[0033] 500 electrical equipment. Detailed implementation manners

[0034] In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back, top, bottom...) are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, then the directional indications will also change accordingly. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0035] In addition, referring to "embodiments" in this article means that specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various positions in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0036] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0037] Application overview

[0038] In the field of new energy batteries, a liquid cooling plate is usually provided in the battery pack housing to dissipate heat from the battery components. Since there is a risk of coolant leakage during the use of the liquid cooling plate (especially at the inlet and outlet interfaces of the liquid cooling plate), the leaked coolant remains on the surface of the liquid cooling plate. Long-term accumulation can easily cause a potential difference between the battery housing and the housing, resulting in insulation failure. The electrolytic reaction of the coolant remaining on the surface of the liquid cooling plate can cause corrosion of the battery housing and then lead to liquid leakage. Although some liquid cooling plate solutions with diversion structures are provided in the prior art, it is difficult to achieve the overall effects of diversion and anti-corrosion of the liquid cooling plate, and the battery components still have the risk of corrosion damage.

[0039] Some embodiments of the battery housing, battery pack, and electrical equipment in the technical solution of the present invention are provided below.

[0040] In an embodiment of the present invention, a battery housing 100 is provided, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown. The battery housing 100 includes a housing 1 and a heat exchange plate 2. The housing 1 includes a bottom plate 11 and a first side plate structure 12 and a second side plate structure 13 oppositely arranged in a first direction F1, and forms a chamber capable of accommodating battery components. Among them, the first direction F1 is a horizontal direction. The heat exchange plate 2 is arranged in the housing 1, as Figure 5 in the example, to exchange heat with the battery components 410 after the battery components 410 are assembled in the housing 1, including cooling and heating insulation; the heat exchange plate 2 has a first end 21 and a second end 22 oppositely arranged in the first direction F1. The first end 21 is located near the first side plate structure 12 and is connected to the first side plate structure 12. The second end 22 is located near the second side plate structure 13 and is connected to the second side plate structure 13; an inlet and outlet interface assembly 23 and a drain hole 24 are provided on the top surface of the heat exchange plate 2. Both the inlet and outlet interface assembly 23 and the drain hole 24 are located at a position near the first end 21 in the first direction F1. Among them, the inlet and outlet interface assembly 23 is used to connect with the pipeline of the heat exchange system. For example, Figure 1 the inlet interface 231 and the outlet interface 232 shown are respectively connected to the inlet pipeline and the outlet pipeline to enable the liquid in the heat exchange plate 2 to circulate during use; the drain hole 24 penetrates the heat exchange plate 2, that is, the upper space of the heat exchange plate 2 is communicated with the lower gap space 14 through the drain hole 24. Correspondingly, the heat exchange plate 2 is inclined relative to the bottom plate 11 of the housing, and the height of the second end 22 of the heat exchange plate 2 is greater than the height of the first end 21, so that the liquid remaining on the heat exchange plate 2 can flow under the action of gravity to a position near the first end 21, and then flow through the drain hole 24 to the gap space 14 below the heat exchange plate 2.

[0041] It can be understood that during the long-term use of the battery pack, the heat exchange plate may cause coolant leakage due to reasons such as aging, loose interfaces, and damaged surfaces. In particular, the risk of leakage at the liquid inlet and outlet interfaces is relatively high. If the leaked coolant cannot be discharged in time, it will accumulate on the surface of the heat exchange plate for a long time. When there is an electric potential difference between the battery housing and the box housing, the coolant on the surface of the heat exchange plate 2 will undergo an electrolysis reaction, which will cause the battery housing to corrode and leak, affecting the performance and service life of the battery.

[0042] In this embodiment, the structure and installation method of the heat exchange plate 2 are improved, which can make the coolant remaining on the surface of the heat exchange plate 2 flow to the area near the first end 21 and drain downward through the drain hole 24 into the gap space 14 below the heat exchange plate 2, realizing timely liquid drainage. Thus, it can prevent the electrolysis reaction caused by the long-term accumulation of coolant, avoid the corrosion and leakage of the battery housing, protect the battery assembly 410, and keep the battery housing insulated from the box housing 1, which is beneficial to extending the service life of the battery and improving the battery performance.

[0043] It should be noted that in practical applications, according to specific usage requirements, the box housing 1 can also be provided with a third side plate structure 15 and a fourth side plate structure 16 connecting the first side plate structure 12 and the second side plate structure 13. The third side plate structure 15 and the fourth side plate structure 16 extend along a second direction F2 perpendicular to the first direction F1, so that the box housing 1 forms a rectangular frame structure. According to needs, a box cover that can be opened or closed can also be provided on the top of the box housing 1. In addition, a corresponding drainage pipeline or water absorbent can be provided below the heat exchange plate 2 according to needs.

[0044] In addition, the heat exchange plate 2 in this embodiment is not limited to a liquid cooling plate, and the same is true for the following embodiments.

[0045] In a further embodiment of the present utility model, as Figure 1 and Figure 2 shown, a first groove 25 is provided at a position on the top surface of the heat exchange plate 2 near the first end 21. The bottom surface height of the first groove 25 is lower than the top surface height of the heat exchange plate 2, and the first groove 25 is communicated with the drain hole 24. The liquid inlet and outlet interface assembly 23 of the heat exchange plate 2 is arranged in the first groove 25. In practical applications, when a liquid leakage occurs at the liquid inlet and outlet interface assembly 23, as Figure 1 in the example, the leaked coolant usually flows into the first groove 25. The first groove 25 can limit the flow and diffusion of the coolant to other areas, and the coolant can flow through the first drain hole 24 in the first groove 25 to the gap space 14 below the heat exchange plate 2.

[0046] Preferably, as Figure 3 and Figure 6In the example, the heat exchange plate 2 includes a top plate and a flow channel plate that are joined together in the height direction F3. By machining corresponding flow channel grooves on the flow channel plate, corresponding flow channels are formed after the top plate and the flow channel plate are joined together. Among them, the top plate adopts a double-layer plate structure. For example Figure 6 In the example, during machining, corresponding notches are machined on the upper plate body of the top plate, so as to form a first groove 25 by combining the lower body attached to the lower part of the upper plate body with the notch, which can effectively improve the machining efficiency and reduce the machining difficulty.

[0047] It should be noted that the first groove 25 is not limited to Figure 2 and Figure 6 the semi-circular structure shown in, and can also be set to other shapes according to actual needs.

[0048] Furthermore, as Figures 1 to 4 shown, at least one diversion groove 26 is provided on the top surface of the heat exchange plate 2. The diversion groove 26 extends along the first direction F1 and communicates with the drain hole 24. The coolant on the surface of the heat exchange plate 2 is guided through the diversion groove 26, so that the coolant can flow along the diversion groove 26 to the drain hole 24 and flow from the drain hole 24 to the gap space 14 below the heat exchange plate 2. Among them, the number of drain holes 24 on the heat exchange plate 2 is also at least one. When the number of diversion grooves 26 is multiple, correspondingly, the number of drain holes 24 on the heat exchange plate 2 is also multiple, and each diversion groove 26 communicates with one of the drain holes 24, so as to increase the diversion and drainage channels on the surface of the heat exchange plate 2, so that the coolant retained at different positions can be discharged to the gap space 14 below the heat exchange plate 2 through different diversion grooves 26 and drain holes 24.

[0049] It should be noted that when the top plate of the heat exchange plate 2 adopts the double-layer plate structure shown in Figure 6 , corresponding notches can be machined on the upper plate body of the top plate to form a diversion groove 26 in combination with the lower body, which can effectively improve the machining efficiency and reduce the machining difficulty.

[0050] Furthermore, as Figure 3 and Figure 6 shown, there is a gap space 14 (i.e., the space below the heat exchange plate 2) between the bottom surface of the heat exchange plate 2 and the bottom plate 11 of the box shell 1. The drain hole 24 communicates with the gap space 14, so that the coolant on the upper surface of the heat exchange plate 2 can flow into the gap space 14 through the drain hole 24. Among them, a liquid absorbing member 31 is arranged in the gap space 14 for absorbing the coolant flowing into the gap space 14 through the drain hole 24; specifically, the liquid absorbing member 31 can adopt a water-absorbing foam, and the compression amount of the water-absorbing foam wing plate is about 30%, which can not only increase the liquid absorption amount, but also play a certain supporting role. Preferably, as Figure 7In the example in [reference], the liquid absorbent member 31 is correspondingly arranged with the flow guiding groove 26, which can buffer the position of the flow guiding groove 26 and prevent liquid leakage from the flow guiding groove 26. When multiple flow guiding grooves 26 are provided, multiple liquid absorbent members 31 can be correspondingly arranged in the gap space 14 so that a liquid absorbent member 31 is correspondingly arranged below each flow guiding groove 26. Of course, the shape of the liquid absorbent member 31 is not limited to Figure 7 In the example in [reference], in practical applications, a liquid absorbent member 31 with a relatively large area can also be provided, which can cover multiple flow guiding grooves 26 at the same time and can be set according to specific usage requirements.

[0051] In a further embodiment of the present invention, such as Figure 6 In the example in [reference], the battery box body 100 further includes a liquid leakage detector 32. The liquid leakage detector 32 is arranged in the first groove 25 of the heat exchange plate 2 and is used to detect whether there is liquid leakage in the first groove 25. The liquid leakage detector 32 can establish a communication connection with the control system of the battery to transmit the detection result to the control system. When the liquid leakage detector 32 detects liquid leakage in the first groove 25, it can timely transmit a corresponding liquid leakage signal to the control system to play an alarm and reminder role, so that the user can timely discover the liquid leakage phenomenon and perform corresponding repair operations on the battery pack, thereby preventing the expansion of losses and being beneficial to reducing the safety risk.

[0052] In a further embodiment of the present invention, such as Figure 4 、 Figure 8 and Figure 9 As shown in [reference], the first side plate structure 12 includes a first side plate body 122 and a first protrusion 121. The first protrusion 121 is arranged on the inner side wall of the first side plate body 122 and extends a distance along the first direction F1. Similarly, the second side plate includes a second side plate body 132 and a second protrusion 131. The second protrusion 131 is arranged on the inner side wall of the second side plate body 132 and extends a distance along the first direction F1. The top surface of the first protrusion 121 is flush with the top surface of the second protrusion 131. When the battery assembly 410 is assembled in the battery box body 100, the first protrusion 121 and the second protrusion 131 are used to support the battery assembly 410 to facilitate the fixation of the battery assembly 410. Among them, as in Figure 8 and Figure 9 In the example in [reference], the bottom surface height of the second protrusion 131 is higher than the bottom surface height of the first protrusion 121, that is, in the height direction F3, the thickness of the first protrusion 121 is greater than the thickness of the second protrusion 131 to be adapted to the heat exchange plate 2. The position on the top surface of the heat exchange plate 2 close to the first end 21 is connected to the bottom surface of the first protrusion 121. Correspondingly, the position on the top surface of the heat exchange plate 2 close to the second end 22 is connected to the bottom surface of the second protrusion 131. The specific connection method is not limited to bolt connection, welding, etc.

[0053] In this embodiment, by providing the first protrusion 121 and the second protrusion 131, on the one hand, they can be used to support the battery module 410 and connect to the heat exchange plate 2, and on the other hand, they can also keep an appropriate gap between the heat exchange plate 2 and the battery module 410, so that the battery module 410 will not directly press on the heat exchange plate 2, effectively preventing the heat exchange plate 2 from being deformed under pressure.

[0054] It should be noted that when the battery module 410 is assembled in the battery box 100, a corresponding heat conducting member 420 can be provided between the heat exchange plate 2 and the battery module 410 to utilize the heat conducting member 420 to conduct heat and improve the heat exchange efficiency of the heat exchange plate 2 for the battery module 410.

[0055] In addition, in practical applications, according to the assembly requirements, the first end 21 of the heat exchange plate 2 can be connected to the first side plate body 122, and the second end 22 of the heat exchange plate 2 can be connected to the second side plate body 132 to further strengthen the connection strength between the heat exchange plate 2 and the box shell 1.

[0056] Furthermore, in a specific implementation manner, as Figure 1 and Figure 8 shown, the top surface of the heat exchange plate 2 includes a first connection surface 271, a main surface portion 272, and a second connection surface 273 that are sequentially connected in the first direction F1. Among them, both the first connection surface 271 and the second connection surface 273 are planes extending in the first direction F1, and the main surface portion 272 is an inclined surface inclined with respect to the first direction F1; the height of the second connection surface 273 is greater than the height of the first connection surface 271 to be adapted to the bottom surface heights of the first protrusion 121 and the second protrusion 131; the first connection surface 271 is attached to and connected to the bottom surface of the first protrusion 121, and the second connection surface 273 is attached to and connected to the bottom surface of the second protrusion 131, for example, by using rivet nuts for connection, to achieve the connection and fixation between the heat exchange plate 2 and the box shell 1, and utilize the inclined surface structure of the main surface portion 272 to enable the coolant on the surface to flow towards the first end 21 of the heat exchange plate 2 under the action of gravity, and then drain out through the drain hole 24 into the lower gap space 14 of the heat exchange plate 2.

[0057] Furthermore, in another specific implementation manner, as Figure 2 and Figure 9As shown, the top surface of the heat exchange plate 2 is an inclined surface that is inclined as a whole with respect to the first direction F1. Correspondingly, the bottom surface of the first protruding portion 121 is an inclined surface parallel to the top surface of the heat exchange plate 2, and the bottom surface of the first protruding portion 121 is attached to and connected to a position on the top surface of the heat exchange plate 2 close to the first end 21. The bottom surface of the second protruding portion 131 is attached to and connected to a position on the top surface of the heat exchange plate 2 close to the second end 22, for example, by a blind rivet nut connection, to realize the connection and fixation between the heat exchange plate 2 and the box shell 1, and utilize the inclined surface structure of the main surface portion 272 to enable the coolant on the surface to flow towards the first end 21 of the heat exchange plate 2 under the action of gravity, and then leave the heat exchange plate 2 through the drain hole 24 to the lower gap space 14.

[0058] Furthermore, in practical applications, such as Figure 4 in the example, at least one partition 17 is further provided in the box shell 1. For example, the partition 17 extends along the first direction F1 or along the second direction F2 perpendicular to the first direction F1 to divide the internal space of the box shell 1 into multiple sub-spaces to accommodate different modules in the battery assembly 410. Taking 4 as an example, a partition 17 extending along the first direction F1 and a partition 17 extending along the second direction F2 are provided in the box shell 1. Among them, protruding structures extending along the first direction F1 are respectively provided on both sides of the partition 17 extending along the second direction F2 to cooperate with the first protruding portion 121 of the first side plate structure 12 and the second protruding portion 131 of the second side plate structure 13 respectively to jointly provide support for the battery assembly 410, which is beneficial to enhancing the supporting force of the box shell 1 on the battery assembly 410.

[0059] In an embodiment of the second aspect of the present invention, a battery pack 400 is further provided, such as Figure 1 and Figure 5As shown in the figure, it includes the battery box body 100 and the battery assembly 410 in any embodiment of the first aspect above. The battery assembly 410 is arranged in the battery box body 100 and is connected to the box shell 1 of the battery box body 100; the heat exchange plate 2 of the battery box body 100 is located below the battery assembly 410, and a heat conduction member 420, such as thermal conductive glue, is filled between the heat exchange plate 2 and the battery assembly 410 to conduct heat between the heat exchange plate 2 and the battery assembly 410 through the heat conduction member 420, so as to realize the heat exchange of the heat exchange plate 2 for the battery assembly 410. It is not limited to cooling and heat dissipation of the battery assembly 410, and can also be heating and heat preservation of the battery assembly 410. Among them, the liquid inlet and outlet interface assembly 23 of the heat exchange plate 2 can be connected to the pipeline of the external heat exchange system, so that the coolant can circulate to realize the heat exchange of the heat exchange plate 2; the liquid inlet and outlet interface assembly 23 is located at a position on the heat exchange plate 2 close to the first end 21, and a drain hole 24 is provided near the liquid inlet and outlet interface assembly 23. When the liquid inlet and outlet interface assembly 23 leaks, the leaked coolant can flow through the drain hole 24 to the gap space 14 below the heat exchange plate 2 to prevent the coolant from accumulating on the surface of the heat exchange plate 2 and causing corrosion and damage to the shell of the battery assembly 410.

[0060] In practical applications, such as Figure 1 In the example shown, the battery shell adopts a box shell 1 with a bottom plate 11 and four side wall structures to form a chamber for accommodating the battery assembly 410 and can protect the periphery of the battery assembly 410.

[0061] Furthermore, according to specific usage requirements, the battery box body 100 may further include a box cover covering the top of the box shell 1 so that the battery assembly 410 is located in a relatively enclosed space.

[0062] In addition, the battery pack 400 in this embodiment has all the beneficial effects of the battery box body 100 in any of the above embodiments, which will not be elaborated here.

[0063] In the embodiment of the third aspect of the present invention, an electrical device 500 is provided, such as Figure 10 As shown in the figure, the electrical device 500 includes the battery pack 400 in any embodiment of the second aspect above to supply power to the electrical device 500 through the battery pack 400.

[0064] In addition, the electrical device 500 in this embodiment has all the beneficial effects of the battery pack 400 in any of the above embodiments, which will not be elaborated here.

[0065] The basic principles of the present utility model have been described in conjunction with specific embodiments. However, it should be noted that the advantages, benefits, effects, etc. mentioned in the present utility model are only examples and not limitations. It cannot be considered that these advantages, benefits, effects, etc. are essential for each embodiment of the present utility model. Additionally, the specific details disclosed above are only for illustrative and easy-to-understand purposes and not for limitation. The above details do not limit the present utility model to necessarily implementing with the above specific details.

[0066] The block diagrams of the devices, apparatuses, equipment, and systems involved in the present utility model are only illustrative examples and do not intend to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open-ended terms, meaning "including but not limited to", and can be used interchangeably with each other. The word "or" and "and" used herein refer to the phrase "and / or" and can be used interchangeably with each other, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to" and can be used interchangeably with each other. It also needs to be pointed out that in the devices and equipment of the present utility model, each component can be disassembled and / or recombined. These disassembly and / or recombination should be regarded as equivalent solutions of the present utility model.

[0067] The above description has been given for purposes of illustration and description. In addition, this description does not intend to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions, and sub-combinations thereof. The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these aspects are very obvious to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present utility model. Therefore, the present utility model does not intend to be limited to the aspects shown herein, but rather to the broadest scope consistent with the principles and novel features of the present utility model.

[0068] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A battery box, characterized in that, Comprising: A box shell (1), the box shell (1) comprising a bottom plate (11) and a first side plate structure (12) and a second side plate structure (13) oppositely arranged in a first direction (F1); A heat exchange plate (2), arranged inside the box shell (1), opposite ends of the heat exchange plate (2) in the first direction (F1) are respectively a first end (21) and a second end (22), the first end (21) is connected to the first side plate structure (12), the second end (22) is connected to the second side plate structure (13), and a liquid inlet / outlet interface assembly (23) and a drain hole (24) penetrating the heat exchange plate (2) are arranged at a position on the top surface of the heat exchange plate (2) close to the first end (21); Wherein, the heat exchange plate (2) is inclined relative to the bottom plate (11), and the height of the second end (22) is greater than the height of the first end (21).

2. The battery box according to claim 1, characterized in that, A first groove (25) is arranged at a position on the top surface of the heat exchange plate (2) close to the first end (21), the first groove (25) communicates with the drain hole (24), and the liquid inlet / outlet interface assembly (23) is arranged in the first groove (25).

3. The battery box according to claim 2, characterized in that, At least one flow guiding groove (26) and at least one drain hole (24) are arranged on the top surface of the heat exchange plate (2); The flow guiding groove (26) extends along the first direction (F1), and each flow guiding groove (26) communicates with a corresponding drain hole (24).

4. The battery box according to claim 3, characterized in that, A gap space (14) exists between the bottom surface of the heat exchange plate (2) and the bottom plate (11); The battery box further comprises a liquid absorbing member (31), the liquid absorbing member (31) is arranged in the gap space (14) and is used for absorbing the liquid flowing into the gap space (14) from the drain hole (24); The liquid absorbing member (31) is arranged corresponding to the flow guiding groove (26).

5. The battery box according to claim 2, characterized in that, Further comprising: A liquid leakage detector (32), arranged in the first groove (25), used for detecting whether there is liquid leakage in the first groove (25), and the liquid leakage detector (32) is adapted to transmit the detection result to the control system of the battery.

6. The battery box according to any one of claims 1 to 5, characterized in that, The first side plate structure (12) includes a first side plate body and a first protruding portion (121) provided on the inner side wall of the first side plate body. The second side plate structure (13) includes a second side plate body and a second protruding portion (131) provided on the inner side wall of the second side plate body. The top surface of the first protruding portion (121) is flush with the top surface of the second protruding portion (131) for supporting the battery assembly (410). Among them, the bottom surface of the second protruding portion (131) is higher than the bottom surface of the first protruding portion (121). The position on the top surface of the heat exchange plate (2) close to the first end (21) is connected to the bottom surface of the first protruding portion (121), and the position on the top surface of the heat exchange plate (2) close to the second end (22) is connected to the bottom surface of the second protruding portion (131).

7. The battery box according to claim 6, wherein the top surface of the heat exchange plate (2) includes a first connection surface (271), a main surface portion (272), and a second connection surface (273) that are sequentially connected in the first direction (F1); both the first connection surface (271) and the second connection surface (273) are flat surfaces, and the height of the second connection surface (273) is greater than the height of the first connection surface (271); the first connection surface (271) is attached to and connected to the bottom surface of the first protruding portion (121), the second connection surface (273) is attached to and connected to the bottom surface of the second protruding portion (131), and the main surface portion (272) is an inclined surface inclined along the first direction (F1).

8. The battery box according to claim 6, wherein the top surface of the heat exchange plate (2) is an inclined surface inclined relative to the first direction (F1); the bottom surface of the first protruding portion (121) is parallel to the top surface of the heat exchange plate (2) and is attached to and connected to the position on the top surface of the heat exchange plate (2) close to the first end (21); the bottom surface of the second protruding portion (131) is parallel to the top surface of the heat exchange plate (2) and is attached to and connected to the position on the top surface of the heat exchange plate (2) close to the second end (22).

9. A battery pack, characterized in that, Comprising: the battery box according to any one of claims 1 to 8; a battery assembly (410) disposed in the battery box and connected to the box shell (1) of the battery box. Among them, a heat conducting member (420) is filled between the heat exchange plate (2) of the battery box and the battery assembly (410).

10. An electrical device, characterized in that, Comprising: the battery pack according to claim 9.

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