Battery box body, power supply device and electric equipment

Abstract

The invention provides a battery box body, a power supply device and electric equipment, the battery box body comprises a liquid cooling plate, the liquid cooling plate is provided with a containing cavity, the containing cavity is used for containing cooling liquid, and the liquid cooling plate comprises a first area and a second area which are adjacent to each other; the frame assembly is arranged in the first area and is used for defining a space for accommodating the battery module; the water nozzle assembly comprises a mounting table, an external water nozzle and a first sealing ring, the mounting table is arranged in the second area and connected to the outer wall of the frame assembly, the external water nozzle comprises a pipe body part and a flange part, the flange part is connected to the periphery of the pipe body part in a surrounding mode, the mounting table is provided with a mounting hole, and the pipe body part is inserted into the mounting hole and communicates with the containing cavity; the flange part abuts against the appearance face, away from the liquid cooling plate, of the mounting table, and the first sealing ring is arranged between the flange part and the mounting table. According to the application, the first sealing ring is arranged between the flange part and the mounting table, so that external water vapor is difficult to enter the area of the battery box body for placing the battery module.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a battery housing, a power supply device, and an electrical appliance. Background Technology

[0002] As battery cell development continues to advance towards higher energy and higher power technologies, higher demands are being placed on the heat dissipation capabilities of battery packs. Liquid cooling plates are currently one of the commonly used heat dissipation methods for battery packs. In related technologies, a liquid-cooled battery pack includes a liquid cooling plate, a frame assembly, a water nozzle assembly, and a battery module. The battery module is placed within the area defined by the frame assembly. Both the frame assembly and the water nozzle assembly are mounted on the liquid cooling plate. The liquid cooling plate has a first flow channel and a second flow channel that are connected. The first flow channel is located below the frame assembly, and the second flow channel is located below the water nozzle assembly, with the water nozzle assembly connected to the second flow channel. When friction stir welding is used to weld the frame assembly and the liquid cooling plate, because the liquid cooling plate below the water nozzle assembly has a second flow channel, the frame assembly and the liquid cooling plate near the water nozzle assembly cannot be welded; otherwise, the first and second flow channels would be isolated. However, if the frame assembly and liquid cooling plate near the water nozzle assembly are not welded, a certain gap will exist between the frame assembly and the liquid cooling plate in this area. This may cause external moisture to enter the water nozzle assembly and then enter the area where the battery module is placed through the gap between the frame assembly and the liquid cooling plate, thus affecting the safety of the battery module. Summary of the Invention

[0003] This application provides a battery housing, a power supply device, and an electrical appliance, including but not limited to solving the problem that external moisture may seep into the area where the battery module is placed inside the battery housing.

[0004] In a first aspect, this application provides a battery housing, the battery housing comprising: A liquid cooling plate having a receiving cavity for containing coolant, the liquid cooling plate including adjacent first and second regions; A frame component, wherein the frame component is disposed in the first region and defines a space for accommodating the battery module; and A water tap assembly includes a mounting platform, an external water tap, and a first sealing ring. The mounting platform is disposed in the second region and connected to the outer wall of the frame assembly. The external water tap includes a tube body and a flange. The flange surrounds and connects to the outer periphery of the tube body. The mounting platform has a mounting hole. The tube body is inserted into the mounting hole and communicates with the receiving cavity. The flange abuts against the outer surface of the mounting platform that is opposite to the liquid cooling plate. The first sealing ring is disposed between the flange and the mounting platform.

[0005] In some embodiments, the flange portion has a first mounting groove on the side facing the outer surface, and the first sealing ring is at least partially disposed in the first mounting groove of the flange portion; and / or, the outer surface of the mounting platform has a first mounting groove, and the first sealing ring is at least partially disposed in the first mounting groove of the mounting platform.

[0006] In some embodiments, the liquid cooling plate includes a plate body and a cold plate nozzle. The plate body has the receiving cavity. The cold plate nozzle protrudes from the plate body and communicates with the receiving cavity. The cold plate nozzle is inserted into the mounting hole, and the outer side wall of the cold plate nozzle is spaced apart from the inner side wall of the mounting hole. The tube portion of the external nozzle is inserted into the cold plate nozzle, or the cold plate nozzle is inserted into the tube portion of the external nozzle.

[0007] In some embodiments, the tube portion of the external water nozzle is sealed to the cold plate water nozzle, and the water nozzle assembly further includes at least one second sealing ring disposed between the tube portion of the external water nozzle and the cold plate water nozzle; the tube portion of the external water nozzle is inserted into the cold plate water nozzle, and a second mounting groove is provided on the outer periphery of the tube portion of the external water nozzle, and the second sealing ring is at least partially disposed in the second mounting groove.

[0008] In some embodiments, the flange portion of the external water nozzle is further provided with a clearance groove, the clearance groove surface is opposite to the mounting hole, the material thickness of the end of the cold plate water nozzle away from the plate body is less than the width of the clearance groove, and the clearance groove is used to space the end of the cold plate water nozzle away from the plate body from the flange portion.

[0009] In some embodiments, the cold plate water tap includes a water tap seat and a water tap tube. The water tap seat is connected to the plate body, and the water tap tube is connected to the side of the water tap seat away from the plate body. The tube portion of the external water tap is inserted into the water tap tube, and the tube portion of the external water tap is opposite to and spaced apart from the water tap seat.

[0010] In some embodiments, the wall of the mounting hole extends longitudinally from the outer surface of the mounting platform to the plate body, and a preset gap is formed between the wall of the mounting hole and the cold plate water nozzle. The mounting platform is provided with a third mounting groove on the side opposite to the outer surface. The water nozzle assembly also includes a third sealing ring, which is disposed between the mounting platform and the plate body, and is located in the third mounting groove and surrounds the mounting hole.

[0011] In some embodiments, the mounting platform has two mounting holes, and the faucet assembly includes two external faucets, which are respectively disposed in the two mounting holes. The external faucets also include a first protrusion and a second protrusion, which are respectively connected to opposite sides of the flange. The first protrusion and the second protrusion are used to connect to a connector so that the external faucets are fixed to the mounting platform. The arrangement direction of the two external faucets is not parallel to the arrangement direction of the first protrusion and the second protrusion.

[0012] In some embodiments, the battery housing further includes a bottom protective plate disposed on the side of the liquid cooling plate opposite to the frame assembly; the edges of the frame assembly and the bottom protective plate are connected by rivet nuts and rivet bolts, and the annular boss on the rivet nut is located between the frame assembly and the bottom protective plate; the mounting platform includes a mounting body and at least one raised portion, the raised portion protruding from the edge of the mounting body facing the bottom protective plate, the raised portion abutting against the bottom protective plate, and the thickness of the raised portion is the same as the thickness of the annular boss.

[0013] In some embodiments, the mounting platform further includes at least one protrusion located on the side of the mounting body opposite to the raised portion. The mounting platform is connected to the bottom guard plate by a press-fit bolt, which passes through the bottom guard plate and the raised portion in sequence to form a connection with the protrusion.

[0014] In some embodiments, the battery housing further includes a sealing gasket disposed along the outer periphery of the liquid cooling plate, a sealing gasket surrounding the first region disposed between the frame assembly and the bottom protective plate, and a sealing gasket surrounding the second region disposed between the mounting platform and the bottom protective plate. The sealing gasket has at least one notch for avoiding the raised portion.

[0015] Secondly, this application also provides a power supply device, which includes a battery module and the aforementioned battery housing, wherein the battery module is placed in the battery housing.

[0016] Thirdly, this application also provides an electrical device, which includes a device body and the aforementioned power supply device, wherein the power supply device is used to supply power to the device body.

[0017] Compared with the prior art, the beneficial effects of this application are as follows: In this application, a first sealing ring is provided between the flange and the mounting platform. This first sealing ring can tightly fit the flange and the mounting platform to achieve a sealing effect, thereby preventing or reducing the problem of external moisture entering the mounting hole of the mounting platform through the gap between the flange and the mounting platform, then flowing into the gap between the frame assembly and the liquid cooling plate, and finally reaching the area where the battery module is placed. Therefore, by providing a first sealing ring between the flange and the mounting platform, this application can largely block the path of external moisture entering the area where the battery module is placed through the mounting platform. In other words, even if the nearby liquid cooling plate and frame assembly are not welded, external moisture is unlikely to enter the area of ​​the battery box where the battery module is placed, thereby improving electrical safety. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the battery housing provided in an embodiment of this application.

[0020] Figure 2 This is an exploded view of the battery housing provided in an embodiment of this application.

[0021] Figure 3 This is a schematic diagram showing the division of the first and second regions of the liquid cooling plate provided in an embodiment of this application.

[0022] Figure 4 This is a partial schematic diagram of the liquid cooling plate provided in an embodiment of this application.

[0023] Figure 5 An exploded view of the liquid cooling plate, water tap assembly, and frame assembly near the water tap assembly in the battery housing provided in the embodiments of this application.

[0024] Figure 6 for Figure 5 The assembly diagram shown includes the liquid cooling plate, water nozzle assembly, and frame assembly.

[0025] Figure 7 This is an exploded view of the faucet assembly provided in an embodiment of this application.

[0026] Figure 8 for Figure 7 The faucet assembly shown is a top view in its assembled state.

[0027] Figure 9 This is a schematic diagram of an external water tap provided in an embodiment of this application.

[0028] Figure 10 for Figure 6 The assembly structure shown is a cross-sectional view along line AA.

[0029] Figure 11 This is a schematic diagram illustrating the theoretical path of external moisture seeping into the area where the battery module is located.

[0030] Figure 12 This is a cross-sectional view of an external water tap provided in an embodiment of this application.

[0031] Figure 13 for Figure 4 The liquid cooling plate shown is a cross-sectional view along line BB.

[0032] Figure 14 This is a schematic diagram illustrating the theoretical path of coolant seeping into the area where the battery module is located.

[0033] Figure 15 for Figure 13 The exploded view of the liquid cooling plate is shown.

[0034] Figure 16 This is a top view of the battery housing provided in an embodiment of this application.

[0035] Figure 17 for Figure 16 The battery casing shown is a cross-sectional view along line CC.

[0036] Figure 18 This is a schematic diagram of the mounting platform provided in an embodiment of this application.

[0037] Figure 19 for Figure 16 The battery casing shown is a cross-sectional view along line DD.

[0038] Figure 20 An exploded view of the mounting platform and sealing gasket provided in the embodiments of this application.

[0039] Figure 21 This is a simplified schematic diagram of the power supply device.

[0040] Figure 22 This is a simplified schematic diagram of electrical equipment.

[0041] Explanation of key figure labels: Electrical equipment 100; power supply device 101; equipment body 102; battery box 103; battery module 104; liquid cooling plate 11; plate 111; upper plate 1111; lower plate 1112; cooling plate water nozzle 112; water nozzle pipe 1121; water nozzle seat 1122; limiting ring 1123; frame assembly 12; side beam 121; water nozzle assembly 13; mounting platform 131; mounting body 1311; raised part 1312; protrusion 1313; external water nozzle 132; pipe body 1321; upper pipe body 1321a; lower pipe body 1321b; flange part 13 22; First protrusion 1323; Second protrusion 1324; First sealing ring 133; Second sealing ring 134; Third sealing ring 135; Connector 136; Bottom guard plate 14; Sealing gasket 15; Rivet bolt 16; Rivet nut 17; Annular boss 171; Press-fit bolt 18; Surface M1; First area A1; Second area A2; Safety clearance Y1; Preset clearance Y2; Receiving cavity X1; Mounting hole X2; First mounting groove X3; Clearance groove X4; Second mounting groove X5; Third mounting groove X6; Connecting hole X7; Accommodation space X8; Notch X9. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0044] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0045] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0046] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0047] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0048] Please refer to Figures 1 to 4 This application provides a battery housing 103 for accommodating a battery module. The battery housing 103 includes: a liquid cooling plate 11, a frame assembly 12, and a water inlet assembly 13. The liquid cooling plate 11 has a receiving cavity X1 (e.g., ...). Figure 4 As shown), the receiving cavity X1 is used to receive coolant, and the liquid cooling plate 11 includes adjacent first region A1 and second region A2 (as shown). Figure 3 (As shown). The frame component 12 is disposed in the first region A1 and is used to define the space for accommodating the battery module.

[0049] Please refer to Figures 5 to 10 The faucet assembly 13 includes a mounting platform 131, an external faucet 132, and a first sealing ring 133 (see...). Figure 6 The mounting platform 131 is disposed in the second region A2 and connected to the outer wall of the frame assembly 12. The external water nozzle 132 includes a pipe body 1321 and a flange 1322 (see...). Figure 9 The flange portion 1322 is connected to the outer periphery of the pipe body portion 1321. The mounting platform 131 is provided with mounting holes X2 (see...). Figure 7 The tube body 1321 is inserted into the mounting hole X2 and communicates with the receiving cavity X1 (see...). Figure 10 The flange portion 1322 abuts against the outer surface M1 of the mounting platform 131, which is opposite to the liquid cooling plate 11. The first sealing ring 133 is disposed between the flange portion 1322 and the mounting platform 131.

[0050] The liquid cooling plate 11 is a plate-shaped structure with an internal receiving cavity X1 for introducing coolant. The receiving cavity X1 can be in the form of a flow channel, which can extend in a curved form. Furthermore, most of the area of ​​the liquid cooling plate 11 is provided with flow channels to achieve efficient heat exchange with the battery module.

[0051] The liquid cooling plate 11 can be divided into a first region A1 and a second region A2. A portion of the receiving cavity X1 is located in the first region A1, and another portion of the receiving cavity X1 is located in the second region A2. The receiving cavities X1 in the first region A1 and the receiving cavities X1 in the second region A2 are interconnected. That is, the receiving cavity X1 can include a first flow channel and a second flow channel, wherein the first flow channel is located within the first region A1, the second flow channel is located within the second region A2, and the first and second flow channels are interconnected.

[0052] The liquid cooling plate 11 can be made of a metal with high thermal conductivity, such as aluminum alloy, to facilitate efficient heat exchange with the battery module. The coolant flowing into the liquid cooling plate 11 can be of low conductivity, such as ethylene glycol solution, to prevent short circuits in the battery module caused by coolant leakage.

[0053] In one embodiment, the coolant in the liquid cooling plate 11 can be used for heat dissipation. For example, when the battery module is discharged at high power or charged at a high rate, the battery module will generate a lot of heat. At this time, the coolant is used to efficiently remove this heat, prevent the battery module temperature from getting too high, and avoid the risk of thermal runaway.

[0054] In another embodiment, the coolant in the liquid cooling plate 11 can be used for heating. For example, in low-temperature environments, the performance of the battery module will decrease. At this time, the battery module can be heated by circulating coolant at a certain temperature, allowing it to quickly reach its optimal operating temperature.

[0055] In another embodiment, the coolant in the liquid cooling plate 11 can be used to equalize the temperature. For example, uneven temperature among the cells can lead to inconsistent internal resistance and decay rates, which seriously affects the performance and lifespan of the entire battery pack. In this case, the coolant is used to ensure that all cells are in a uniform temperature field (ideally, the temperature difference requirement is <5°C).

[0056] The frame assembly 12 is disposed above the first region A1 of the liquid cooling plate 11, and may include multiple side beams 121 (see...). Figure 2 and Figure 6Multiple side beams 121 are respectively disposed at different edges of the first region A1 to jointly define the accommodating space X8 for accommodating the battery module. The side beams 121 can be made of high-strength materials such as aluminum alloy or steel to provide better protection for the battery module. The side beams 121 can be hollow structures, which can reduce the overall weight of the battery box 103 and meet the requirements of lightweighting. The hollow structure allows the side beams 121 to have higher torsional stiffness and bending strength while being lightweight, which can stably support the battery module and prevent structural deformation of the battery box 103 during driving or collision, thus ensuring the structural integrity of the battery module.

[0057] The water nozzle assembly 13 is disposed above the second region A2 of the liquid cooling plate 11, and is used to connect to the receiving cavity X1 located in the second region A2, so that the coolant in the liquid cooling plate 11 can circulate. The water nozzle assembly 13 includes a mounting platform 131 and two external water nozzles 132 (see...). Figure 7 The mounting platform 131 is fixed to the frame assembly 12, and two external water nozzles 132 are mounted on the mounting platform 131 and connected to the receiving cavity X1 located in the first region A1. The two external water nozzles 132 are a liquid inlet nozzle and a liquid outlet nozzle, respectively. The liquid inlet nozzle is used to guide external coolant into the receiving cavity X1 of the liquid cooling plate 11, and the liquid outlet nozzle is used to guide the coolant in the receiving cavity X1 of the liquid cooling plate 11 to the outside. Both the liquid inlet nozzle and the liquid outlet nozzle are used for external connectors (or liquid delivery pipes) to allow the coolant in the liquid cooling plate 11 to circulate with the external coolant, thereby achieving heat exchange.

[0058] Mounting platform 131 can be connected to the outer wall of the side beam 121 of the frame assembly 12. The connection method can be, but is not limited to, welding, bonding, bolting, etc. The material of mounting platform 131 can be metal, composite material, etc. Mounting platform 131 optimizes sealing performance and reliability, and at the same time, as a reinforcing structure, it better bears and disperses mechanical stress (such as tightening force, pulling force, bending moment, etc.), preventing it from acting directly on the liquid cooling plate 11 or the frame assembly 12, thereby avoiding fatigue damage or leakage. Mounting platform 131 can be manufactured by, but is not limited to, casting, injection molding, turning, etc. Optionally, mounting platform 131 is a casting, which is simple in process and has high production efficiency.

[0059] The external water tap 132 includes a pipe body 1321 and a flange 1322 surrounding the outer periphery of the pipe body 1321 (see...). Figure 9 The tube body 1321 is a hollow tubular structure, and the flange 1322 is located between the two ends of the tube body 1321 along its length, so that the tubular portion consists of an upper tube body 1321a and a lower tube body 1321b (see...). Figure 9The upper tube 1321a is used for an external connector (or infusion tube), and the lower tube 1321b is used to connect to the receiving cavity X1 of the liquid cooling plate 11.

[0060] Mounting platform 131 is provided with mounting holes X2 (see...) Figure 7 The mounting hole X2 extends through both opposite sides of the mounting platform 131. The lower tube 1321b of the tube body 1321 is inserted into the mounting hole X2 to connect to the receiving cavity X1 of the liquid cooling plate 11. The flange 1322 of the external water nozzle 132 abuts against the outer surface M1 of the mounting platform 131 (see...). Figure 7 and Figure 9 On the mounting platform 131, the outer surface M1 refers to the outer surface of the mounting platform 131 that is away from the liquid cooling plate 11.

[0061] A first sealing ring 133 is provided between the flange 1322 of the external water nozzle 132 and the mounting platform 131 (see...). Figure 10 The first sealing ring 133 is annular and surrounds the pipe body 1321 to provide a seal in the circumferential direction. The first sealing ring 133 is elastic and can be made of elastic materials such as silicone rubber, foamed silicone, or ethylene propylene diene monomer (EPDM). It is understood that when the first sealing ring 133 is placed between the flange 1322 and the mounting platform 131, it is subjected to the combined compression of the flange 1322 and the mounting platform 131, resulting in elastic deformation that tightly adheres to both surfaces, thus achieving a seal.

[0062] Understandably, since one portion of the receiving cavity X1 is located below the water nozzle assembly 13 and the other portion is located below the frame assembly 12, if friction stir welding is used to weld the frame assembly 12 and the liquid cooling plate 11 near the water nozzle assembly 13, the receiving cavity X1 in the first region A1 and the receiving cavity X1 in the second region A2 will be isolated. However, if the frame assembly 12 and the liquid cooling plate 11 near the water nozzle assembly 13 are not welded, a certain gap will inevitably exist between the frame assembly 12 and the liquid cooling plate 11 in this region. External moisture may enter the mounting platform 131 through the mounting hole X2, then reach the bottom of the mounting hole X2, pass through the gap between the mounting platform 131 and the liquid cooling plate 11 from the bottom, and finally enter the area where the battery module is placed through the gap between the frame assembly 12 and the liquid cooling plate 11, thus affecting the safety of the battery module. Please refer to [link / reference needed] for details. Figure 11 The theoretical path by which external moisture seeps into the area where the battery module is placed (i.e., the aforementioned accommodating space X8) is shown. Figure 11 In the diagram, the direction indicated by the arrow is the direction in which external water vapor seeps in.

[0063] In this application, by providing a first sealing ring 133 between the flange 1322 and the mounting platform 131, the first sealing ring 133 can tightly fit the flange 1322 and the mounting platform 131 to achieve a sealing effect. This can prevent or reduce the problem of external moisture entering the mounting hole X2 of the mounting platform 131 through the gap between the flange 1322 and the mounting platform 131, then flowing into the gap between the frame assembly 12 and the liquid cooling plate 11, and finally reaching the area where the battery module is placed. Therefore, by providing a first sealing ring 133 between the flange 1322 and the mounting platform 131, this application can largely block the path of external moisture entering the area where the battery module is placed through the mounting platform 131. In other words, even if the nearby liquid cooling plate 11 and frame assembly 12 are not welded, it is difficult for external moisture to enter the area where the battery module is placed in the battery box 103, thereby improving electrical safety.

[0064] Please refer to Figure 10 and Figure 12 In some embodiments, the flange portion 1322 has a first mounting groove X3 on the side facing the outer surface M1, and the first sealing ring 133 is at least partially disposed within the first mounting groove X3 of the flange portion 1322; and / or, the outer surface M1 of the mounting platform 131 has a first mounting groove X3, and the first sealing ring 133 is at least partially disposed within the first mounting groove X3 of the mounting platform 131. Wherein, the first mounting groove X3 is an annular groove that matches the shape of the first sealing ring 133.

[0065] Specifically, the first mounting slot X3 can be configured in the following three ways: In one embodiment, a first mounting groove X3 is provided only on the side of the flange portion 1322 facing the outer surface M1, and a first sealing ring 133 is at least partially disposed within the first mounting groove X3 of the flange portion 1322, such as Figure 10 As shown.

[0066] In another embodiment, a first mounting groove X3 is provided only on the side of the mounting platform 131 facing the flange portion 1322, and a first sealing ring 133 is at least partially disposed in the first mounting groove X3 of the mounting platform 131.

[0067] In another embodiment, a first mounting groove X3 is provided on the opposite side of the flange portion 1322 and the mounting platform 131, and a first sealing ring 133 is provided in both the first mounting groove X3 of the flange portion 1322 and the first mounting groove X3 of the mounting platform 131.

[0068] In the above embodiments, during the assembly process, the first sealing ring 133 can be embedded in the first mounting groove X3 firstly, and then the external water nozzle 132 can be assembled into the mounting platform 131. In this way, the first sealing ring 133 can be prevented from deviating from the correct position and affecting the sealing effect. Therefore, the setting of the first mounting groove X3 plays a positioning role for the first sealing ring 133.

[0069] It should be noted that the depth of the first mounting groove X3 is less than the thickness of the first sealing ring 133 in its natural state in its own axial direction, so that the first sealing ring 133 can be squeezed by the flange portion 1322 and the mounting platform 131 at the same time.

[0070] The depth of the first mounting slot X3 can be set from 1.3mm to 3.3mm, with specific values ​​including 1.3mm, 1.4mm, 1.5mm, 1.62mm, 1.88mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.56mm, 2.6mm, 2.9mm, 3mm, 3.2mm, and 3.3mm.

[0071] In its natural state, the thickness of the first sealing ring 133 in its axial direction can be from 2mm to 4mm, specifically 2mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.56mm, 2.6mm, 2.9mm, 3mm, 3.2mm, 3.5mm, 3.78mm, 3.9mm, 4.0mm, etc. In its assembled state, the compression ratio of the first sealing ring 133 can be, but is not limited to, 15%, 20%, 25%, 30%, etc.

[0072] Optionally, the width of the first mounting groove X3 can be less than the thickness of the first sealing ring 133 in its natural state in its radial direction, so that the first mounting groove X3 and the first sealing ring 133 are interference fit. In this way, the first sealing ring 133 can not only abut against the bottom wall of the first mounting groove X3, but also against the two side walls of the first mounting groove X3, which increases the contact area and improves the sealing effect.

[0073] It should be noted that the "first sealing ring 133 in its natural state" mentioned above refers to the state when the first sealing ring 133 has not yet been installed into the first mounting groove X3.

[0074] Please refer to Figure 10 and Figure 13 In some embodiments, the liquid cooling plate 11 includes a plate body 111 and a cooling plate nozzle 112 (see...). Figure 13The plate body 111 has the receiving cavity X1. The cold plate water nozzle 112 protrudes from the plate body 111 and communicates with the receiving cavity X1. The cold plate water nozzle 112 is inserted into the mounting hole X2, and the outer side wall of the cold plate water nozzle 112 is spaced apart from the inner side wall of the mounting hole X2. The tube portion 1321 of the external water nozzle 132 is inserted into the cold plate water nozzle 112, or the cold plate water nozzle 112 is inserted into the tube portion 1321 of the external water nozzle 132.

[0075] Specifically, plate 111 is the main body of liquid cooling plate 11, with one part located in the first region A1 and the other part located in the second region A2. Plate 111 may include an upper plate 1111 and a lower plate 1112, which are arranged opposite to each other and connected together to jointly enclose the aforementioned receiving cavity X1. At least one of the upper plate 1111 and the lower plate 1112 is provided with a groove, which is used to form the receiving cavity X1.

[0076] The cold plate water nozzle 112 is a hollow tubular structure, which is installed on the plate body 111 and connected to the receiving cavity X1 of the plate body 111. The cold plate water nozzle 112 is inserted into the mounting hole X2 and spaced apart from the inner sidewall of the mounting hole X2. That is, the diameter of the mounting hole X2 is larger than the outer diameter of the cold plate water nozzle 112. There are two cold plate water nozzles 112, and the two cold plate water nozzles 112 are respectively connected to the two external water nozzles 132 to allow the coolant in the liquid cooling plate 11 to circulate.

[0077] The cold-plate water nozzle 112 can be connected to the upper plate 1111 within the plate body 111. The cold-plate water nozzle 112 and the upper plate 1111 of the plate body 111 can be either an integral structure or a separate structure. An integral structure means that the cold-plate water nozzle 112 and the upper plate 1111 are manufactured as a single piece, while a separate structure means that the cold-plate water nozzle 112 and the upper plate 1111 are two independently manufactured components, which are then assembled together. The subsequent description in this application is based on the separate structure. In the separate structure design, the cold-plate water nozzle 112 and the upper plate 1111 can be connected together by welding, bonding, or other methods.

[0078] Regarding the positional relationship between the cold plate water nozzle 112 and the external water nozzle 132, it is possible that the tube body 1321 of the external water nozzle 132 is inserted into the cold plate water nozzle 112, or the cold plate water nozzle 112 is inserted into the tube body 1321 of the external water nozzle 132. No limitation is made here. The following description will only use "the tube body 1321 of the external water nozzle 132 is inserted into the cold plate water nozzle 112" as an example. During assembly, the mounting platform 131 can be assembled with the liquid cooling plate 11 first, so that the cold plate water nozzle 112 is inserted into the mounting hole X2 of the mounting platform 131, and then the external water nozzle 132 can be inserted into the cold plate water nozzle 112.

[0079] In this embodiment, by setting the cold plate water nozzle 112 and the inner sidewall of the mounting hole X2 at intervals, the cold plate water nozzle 112 can be smoothly inserted into the mounting hole X2, and the insertion process can be prevented from causing the cold plate water nozzle 112 to be skewed, thus affecting the assembly of the external water nozzle 132.

[0080] Please refer to Figure 10 and Figure 12 In some embodiments, the tube portion 1321 of the external water nozzle 132 is sealed to the cold plate water nozzle 112. The water nozzle assembly 13 further includes at least one second sealing ring 134, which is disposed between the tube portion 1321 of the external water nozzle 132 and the cold plate water nozzle 112. The tube portion 1321 of the external water nozzle 132 is inserted into the cold plate water nozzle 112, and a second mounting groove X5 is provided on the outer periphery of the tube portion 1321 of the external water nozzle 132, and the second sealing ring 134 is at least partially disposed within the second mounting groove X5. The second mounting groove X5 is an annular groove that matches the second sealing ring 134.

[0081] Specifically, the second sealing ring 134 is annular and surrounds the tube body 1321 to provide a seal in the circumferential direction. The second sealing ring 134 is elastic and can be made of elastic materials such as silicone rubber, foamed silicone, and ethylene propylene diene monomer (EPDM). The number of second sealing rings 134 can be one, two, three, etc.; this application illustrates two.

[0082] It is understandable that when the coolant flows through the external water nozzle 132 and the cold plate water nozzle 112, the coolant may overflow from the gap between them into the mounting hole X2, then reach the bottom of the mounting hole X2, pass through the gap between the mounting platform 131 and the liquid cooling plate 11 from the bottom, and finally enter the area where the battery module is placed through the gap between the frame assembly 12 and the liquid cooling plate 11. Please refer to [the relevant documentation] for details. Figure 14 The theoretical path shown is that the coolant seeps into the area where the battery module is located. Figure 14In the diagram, the direction indicated by the arrow is the direction in which the coolant seeps in.

[0083] In this embodiment, a second sealing ring 134 is provided between the tube body 1321 of the external water nozzle 132 and the cold plate water nozzle 112. This second sealing ring 134 is compressed by both the tube body 1321 and the cold plate water nozzle 112, thus tightly fitting against the sidewalls of the tube body 1321 and the cold plate water nozzle 112 to achieve a sealing effect. This prevents or reduces the problem of coolant flowing out from the gap between the tube body 1321 and the cold plate water nozzle 112 into the mounting hole X2, then flowing from the mounting hole X2 into the gap between the frame assembly 12 and the liquid cooling plate 11, and finally reaching the area where the battery module is placed. Therefore, by providing a second sealing ring 134 between the tube body 1321 and the cold plate water nozzle 112, the path of coolant from the mounting platform 131 into the area where the battery module is placed can be greatly blocked, thereby improving electrical safety.

[0084] It should be noted that the depth of the second mounting groove X5 is less than the thickness of the second sealing ring 134 in its natural state in its radial direction, so that the second sealing ring 134 can be squeezed by the tube body 1321 of the external water nozzle 132 and the cold plate water nozzle 112 at the same time.

[0085] Optionally, the width of the second mounting groove X5 can also be less than the thickness of the second sealing ring 134 in its natural state in its axial direction, so that the second mounting groove X5 and the second sealing ring 134 are interference fit. In this way, the second sealing ring 134 can not only abut against the bottom wall of the second mounting groove X5, but also against the two side walls of the second mounting groove X5, which increases the contact area and improves the sealing effect.

[0086] It should be noted that the "second sealing ring 134 in its natural state" mentioned above refers to the state when the second sealing ring 134 has not yet been installed into the second mounting groove X5.

[0087] During assembly, the second seal can be first embedded in the second mounting groove X5 on the external water nozzle 132, and then the external water nozzle 132 can be inserted into the cold plate water nozzle 112. In this way, the second sealing ring 134 can be prevented from deviating from the correct position and affecting the sealing effect. Therefore, the setting of the second mounting groove X5 plays a positioning role for the second sealing ring 134.

[0088] Please refer to Figure 10 and Figure 12In some embodiments, the flange portion 1322 of the external water nozzle 132 is further provided with a clearance groove X4, the clearance groove X4 facing the mounting hole X2. The material thickness of the end of the cold plate water nozzle 112 away from the plate body 111 is less than the width of the clearance groove X4. The clearance groove X4 is used to space the end of the cold plate water nozzle 112 away from the plate body 111 from the flange portion 1322.

[0089] Specifically, the clearance groove X4 is an annular groove, which is provided around the pipe body 1321 on the side of the flange 1322 facing the liquid cooling plate 11. The clearance groove X4 is directly opposite the cold plate water nozzle 112, and the material thickness of the end of the cold plate water nozzle 112 away from the plate body 111 (hereinafter referred to as the target end) is less than the width of the clearance groove X4. In other words, the major diameter of the clearance groove X4 is greater than the outer diameter of the target end, and the minor diameter of the clearance groove X4 is smaller than the inner diameter of the target end. Or, the orthographic projection of the target end at the location of the clearance groove X4 falls entirely within the range of the clearance groove X4. It is understandable that if the clearance groove X4 is not provided, during the process of inserting the external water nozzle 132 into the cold plate water nozzle 112, due to factors such as processing errors, the target end of the cold plate water nozzle 112 may collide with the flange 1322 of the external water nozzle 132, resulting in assembly misalignment and weakening the sealing effect of the second sealing ring 134. In this embodiment, by setting the avoidance groove X4, during the process of the external water nozzle 132 being inserted into the cold plate water nozzle 112, the target end of the cold plate water nozzle 112 can be prevented from colliding with the flange portion 1322 of the external water nozzle 132. That is, the avoidance groove X4 plays the role of avoiding the target end, thus ensuring that the second sealing ring 134 has a good sealing effect.

[0090] It should be noted that, in the assembled state where the external water nozzle 132 has been inserted into the cold plate water nozzle 112, the target end of the cold plate water nozzle 112 can be outside the clearance groove X4 or inside the clearance groove X4.

[0091] In this embodiment, the depth of the clearance groove X4 can be the same as or different from the depth of the first mounting groove X3. The depth of the clearance groove X4 can be set from 1.3mm to 3.3mm, and specific values ​​can be 1.3mm, 1.4mm, 1.5mm, 1.62mm, 1.88mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.56mm, 2.6mm, 2.9mm, 3mm, 3.2mm, 3.3mm, etc.

[0092] Please refer to Figure 10 and Figure 15 In some embodiments, the cold plate water nozzle 112 includes a nozzle seat 1122 and a nozzle tube 1121 (see...). Figure 15The faucet seat 1122 is connected to the plate 111. The faucet tube 1121 is connected to the side of the faucet seat 1122 away from the plate 111. The tube body 1321 of the external faucet 132 is inserted into the faucet tube 1121, and the tube body 1321 of the external faucet 132 is opposite to and spaced apart from the faucet seat 1122.

[0093] Specifically, both the faucet holder 1122 and the faucet tube 1121 are hollow structures, allowing the external faucet 132 to connect to the receiving cavity X1 of the plate body 111 via the cold plate faucet 112. The faucet holder 1122 is used to connect to the plate body 111, so that the cold plate faucet 112 can be fixed on the plate body 111 and communicate with the receiving cavity X1 of the plate body 111. The faucet tube 1121 is used for the insertion of the tube body 1321 of the external faucet 132, so that the cold plate faucet 112 can connect to the external faucet 132.

[0094] The inner diameter of the faucet seat 1122 is smaller than the inner diameter of the faucet tube 1121. In the assembled state where the external faucet 132 is inserted into the cold plate faucet 112, the tube body 1321 of the external faucet 132 and the faucet seat 1122 of the cold plate faucet 112 are in a spaced-apart relative state, thus forming a safety gap Y1 (see...). Figure 10 This relative interval can be achieved during the research and development phase by setting the length of the lower tube 1321b of the external water nozzle 132 within a preset range. In other words, by setting the length of the lower tube 1321b of the external water nozzle 132 within a preset range, it can be ensured that the tube body 1321 of the external water nozzle 132 and the water nozzle seat 1122 of the cold plate water nozzle 112 are in a relatively relative, spaced-apart state, thus forming the aforementioned safety gap Y1. Here, the lower tube 1321b of the external water nozzle 132 refers to the portion of the tube body 1321 used to connect to the cold plate water nozzle 112.

[0095] It is understandable that by setting the tube body 1321 of the external water nozzle 132 and the water nozzle seat 1122 of the cold plate water nozzle 112 at intervals, the end of the tube body 1321 can be prevented from colliding with the water nozzle seat 1122 during the process of inserting the external water nozzle 132 into the cold plate water nozzle 112, thereby avoiding misalignment of the assembly and affecting the sealing effect of the second sealing ring 134.

[0096] In this embodiment, the gap between the tube body 1321 of the external water nozzle 132 and the water nozzle seat 1122 of the cold plate water nozzle 112 can be set to 1.5mm to 2.5mm, and the specific values ​​can be 1.5mm, 1.62mm, 1.8mm, 1.93mm, 2.0mm, 2.1mm, 2.3mm, 2.49mm, 2.5mm, etc.

[0097] Please refer to Figure 15In some embodiments, the upper plate 1111 of the plate 111 is provided with a connecting hole X7, which penetrates the upper plate 1111 to connect with the receiving cavity X1 of the plate 111. The cold plate water nozzle 112 also includes an annular limiting ring 1123, which protrudes from the side of the water nozzle seat 1122 opposite to the water nozzle tube 1121, and is used to be inserted into the connecting hole X7 of the upper plate 1111. It can be understood that by the cooperation between the limiting ring 1123 and the connecting hole X7, the degree of freedom of the cold plate water nozzle 112 in the radial direction of the connecting hole X7 can be restricted, so that the cold plate water nozzle 112 cannot move relative to the plate 111 in the radial direction. Therefore, the connecting hole X7 can play a positioning role in the assembly of the cold plate water nozzle 112, thereby ensuring that the cold plate water nozzle 112 can be stably installed on the plate 111.

[0098] Please refer to Figure 10 In some embodiments, the wall of the mounting hole X2 extends longitudinally from the outer surface M1 of the mounting platform 131 to the surface of the plate 111, and a preset gap Y2 is formed between the wall of the mounting hole X2 and the cold plate water nozzle 112. A third mounting groove X6 is provided on the side of the mounting platform 131 opposite to the outer surface M1, and the water nozzle assembly 13 further includes a third sealing ring 135. The third sealing ring 135 is disposed between the mounting platform 131 and the plate 111, and is located within the third mounting groove X6 and surrounds the mounting hole X2.

[0099] Specifically, the third sealing ring 135 is annular and surrounds the outer circumference of the cold plate water nozzle 112 to provide a seal in the circumferential direction. The third sealing ring 135 is elastic and can be made of elastic materials such as silicone rubber, foamed silicone, or ethylene propylene diene monomer (EPDM). The third sealing ring 135 and the third mounting groove X6 can be an interference fit for better sealing.

[0100] It is understandable that, in this embodiment, after a preset gap Y2 is formed between the cold plate water nozzle 112 and the wall of the mounting hole X2, both external water vapor (which seeps in from between the mounting platform 131 and the flange portion 1322 of the external water nozzle 132) and coolant (which overflows from between the external water nozzle 132 and the cold plate water nozzle 112) will inevitably flow into the preset gap Y2 and then reach the bottom of the mounting hole X2. Secondly, in this embodiment, a third mounting groove X6 is also provided at the bottom of the mounting platform 131 (i.e., the side of the mounting platform 131 facing the plate body 111 of the liquid cooling plate 11). A third sealing ring 135 is provided in the third mounting groove X6. The third sealing ring 135 will be jointly squeezed by the mounting platform 131 and the plate body 111 of the liquid cooling plate 11, thereby forming a seal between the mounting platform 131 and the plate body 111 of the liquid cooling plate 11. As can be seen, after the external moisture or coolant reaches the bottom of the mounting hole X2, it will be blocked by the third sealing ring 135, making it difficult to reach the gap between the frame assembly 12 and the liquid cooling plate 111, and thus seep into the area where the battery module is placed.

[0101] Referring to the previous embodiment with the first sealing ring 133 and the second sealing ring 134: regarding the path of external moisture seeping into the area where the battery module is placed (please refer to...) Figure 10 and Figure 11 The first sealing ring 133 forms the first barrier along this path, and the third sealing ring 135 forms the second barrier along this path; for the path where coolant seeps into the area where the battery module is placed (please refer to...), Figure 10 and Figure 14 The second sealing ring 134 forms the first barrier along this path, and the third sealing ring 135 forms the second barrier along this path. In other words, whether it is external moisture or coolant, there are two barriers to prevent it from seeping into the area where the battery module is placed, thus achieving multiple layers of protection.

[0102] Furthermore, the projection of the preset gap Y2 exceeds the projection range of the clearance groove X4, and the projection of the tubular part falls within the range of the clearance groove X4. This arrangement reduces the cross-section of the coolant overflow path. The projection direction of each feature is parallel to the axial direction of the cold plate water nozzle 112.

[0103] In this embodiment, the preset gap Y2 formed between the wall of the mounting hole X2 and the outer wall of the water nozzle pipe 1121 of the cold plate water nozzle 112 can be set to 1mm to 2.5mm, and the specific values ​​can be 1mm, 1.2mm, 1.35mm, 1.5mm, 1.61mm, 1.8mm, 2.05mm, 2.3mm, 2.5mm, etc.

[0104] In this embodiment, the depth of the third mounting groove X6 in the axial direction of the mounting hole X2 can be set to 1.5mm to 3.5mm, and the specific values ​​can be 1.5mm, 1.61mm, 1.8mm, 2.05mm, 2.3mm, 2.5mm, 2.66mm, 2.9mm, 3.0mm, 3.2mm, 3.31mm, 3.5mm, etc.

[0105] In this embodiment, the thickness of the third sealing ring 135 in its natural state along its axial direction can be set to 4mm to 6mm, specifically values ​​such as 4.0mm, 4.11mm, 4.2mm, 4.5mm, 4.72mm, 4.9mm, 5.0mm, 5.2mm, 5.5mm, 5.8mm, and 6.0mm. The term "third sealing ring 135 in its natural state" refers to the state before the third sealing ring 135 is installed into the third mounting slot X6. In the assembled state, the compression rate of the third sealing ring 135 can be, but is not limited to, 30%, 40%, 50%, 55%, and 60%.

[0106] Please refer to Figure 8 and Figure 9 In some embodiments, the mounting platform 131 has two mounting holes X2, and the faucet assembly 13 includes two external faucets 132, which are respectively disposed within the two mounting holes X2. Each external faucet 132 further includes a first protrusion 1323 and a second protrusion 1324. The first protrusion 1323 and the second protrusion 1324 are respectively connected to opposite sides of the flange portion 1322. The first protrusion 1323 and the second protrusion 1324 are used to connect the connector 136, thereby fixing the external faucet 132 to the mounting platform 131. The arrangement direction of the two external faucets 132 is not parallel to the arrangement direction of the first protrusion 1323 and the second protrusion 1324.

[0107] Specifically, the first protrusion 1323 and the second protrusion 1324 are equivalent to two ears on the external water nozzle 132, which serve a fixing function. The first protrusion 1323 and the second protrusion 1324 are connected to the mounting platform 131 via a connector 136, which can be, but is not limited to, fasteners such as bolts, screws, rivets, and pins. Optionally, the external water nozzle 132 can be detachably connected to the mounting platform 131 via the connector 136, which facilitates subsequent disassembly, maintenance, and replacement of parts.

[0108] Understandably, due to cost-saving factors, the external water nozzle 132 can use a standard part. However, the shape and size of the standard part are fixed and may not match the design dimensions of the mounting platform 131. For example, if the first protrusion 1323 and the second protrusion 1324 of each external water nozzle 132 are arranged in a direction parallel to the arrangement direction of the two external water nozzles 132, it will cause the two external water nozzles 132 to interfere with each other.

[0109] In this embodiment, the statement that "the arrangement direction of the two external water nozzles 132 is not parallel to the arrangement direction of the first external protrusion 1323 and the second external protrusion 1324" means that "the external water nozzles 132 are arranged at an angle," such as... Figure 8 As shown. This arrangement avoids interference between the first protrusion 1323 and the second protrusion 1324 on different external water nozzles 132. It is evident that the inclined arrangement makes efficient use of the platform space of the mounting table 131, avoiding the need to increase the size of the mounting table 131 to overcome interference issues. It should be noted that the inclination angles of the two external water nozzles 132 can be the same or different; this application does not impose any limitation on this.

[0110] Please combine Figure 2 Reference Figures 16 to 19 In some embodiments, the battery housing 103 further includes a bottom protective plate 14, which is disposed on the side of the liquid cooling plate 11 opposite to the frame assembly 12. The edges of the frame assembly 12 and the bottom protective plate 14 are connected by rivet nuts 17 and rivet bolts 16 (see...). Figure 16 and Figure 17 The annular boss 171 on the rivet nut 17 is located between the frame assembly 12 and the bottom guard plate 14. The mounting platform 131 includes a mounting body 1311 and at least one raised portion 1312 (see [link to mounting platform]). Figure 18 and Figure 19 The raised portion 1312 protrudes from the edge of the mounting body 1311 facing the bottom guard plate 14. The raised portion 1312 abuts against the bottom guard plate 14, and the thickness of the raised portion 1312 is the same as the thickness of the annular boss 171.

[0111] Specifically, the bottom protective plate 14 is a protective plate located at the bottom of the battery box 103, and its projected shape can be approximately the same as the projected shape of the liquid cooling plate 11. The bottom protective plate 14 serves to protect against bottom impacts and corrosion, while also providing lightweighting and heat dissipation. The material of the bottom protective plate 14 can be, but is not limited to, composite materials, steel, aluminum alloys, etc. The bottom protective plate 14 can have a multi-layer structure, such as two layers (e.g., ...). Figure 17 (As shown).

[0112] One portion of the bottom cover plate 14 is located below the frame assembly 12, while another portion is located below the mounting platform 131. The edge of the bottom cover plate 14 located below the frame assembly 12 is connected to the frame assembly 12 via rivet nuts 17 and rivet bolts 16. The rivet nuts 17 are inserted into the frame assembly 12, while the rivet bolts 16 pass through the bottom cover plate 14 from the side facing away from the frame assembly 12 and are screwed onto the rivet nuts 17. The head of the rivet nuts 17 is an annular boss 171, which is located between the frame assembly 12 and the bottom cover plate 14, thus creating a spaced-out relationship between them. The annular boss 171 provides a precise positioning reference, ensuring accurate installation of the bottom cover plate 14 and uniform gaps. The gap formed by the annular boss 171 acts as a buffer structure, absorbing bottom impact energy and protecting the battery module. Except for the area near the mounting platform 131, the circumferential edges of the bottom protective plate 14 can be connected to the frame assembly 12 using rivet nuts 17 and rivet bolts 16. Multi-point riveting connections evenly distribute the load, avoid stress concentration, and extend the service life of the battery box 103.

[0113] The mounting body 1311 of the mounting platform 131 is connected to the frame assembly 12. Due to the presence of the aforementioned annular boss 171, the mounting body 1311 and the edge of the bottom guard plate 14 are also spaced apart. Furthermore, a raised portion 1312 is provided on the side of the mounting body 1311 facing the bottom guard plate 14, and the thickness of the raised portion 1312 is the same as the thickness of the annular boss 171. It can be understood that by providing the raised portion 1312 on the mounting platform 131, the height difference caused by the annular boss 171 can be offset, so that the circumferential edge of the bottom guard plate 14 is flat, that is, the distance from the edge of the bottom guard plate 14 to the mounting body 1311 is the same as the distance from the edge of the bottom guard plate 14 to the frame assembly 12. This ensures that the bottom guard plate 14 is stably set at the bottom of the frame assembly 12. The number of raised parts 1312 may be, but is not limited to, 1, 2, 3, 4, 5, etc. When there are multiple raised parts 1312, the multiple raised parts 1312 are arranged at intervals along the edge of the mounting body 1311.

[0114] Please refer to Figure 18 and Figure 19 In some embodiments, the mounting platform 131 further includes at least one protrusion 1313, which is located on the side of the mounting body 1311 opposite to the raised portion 1312. The mounting platform 131 is connected to the bottom guard plate 14 by a press-fit bolt 18. The press-fit bolt 18 passes sequentially through the bottom guard plate 14 and the raised portion 1312 to form a connection with the protrusion 1313.

[0115] Specifically, the number of protrusions 1313 and raised portions 1312 is the same. When multiple protrusions 1313 and raised portions 1312 are provided, they are arranged one-to-one. The protrusions 1313, raised portions 1312, and mounting body 1311 can be an integral structure, which increases structural strength. The bottom guard plate 14 located below the mounting platform 131 is connected to the mounting platform 131 by press-fit bolts 18, and the press-fit bolts 18 are sequentially inserted into the bottom guard plate 14, raised portions 1312, and protrusions 1313. It can be understood that by providing protrusions 1313, the connection length between the mounting platform 131 and the press-fit bolts 18 can be increased, enhancing torsional and tensile strength, and improving the connection stability and sealing reliability between the bottom guard plate 14 and the mounting platform 131. The height of the protrusions 1313 can be greater than the height of the raised portions 1312 to connect to most of the press-fit bolts 18, thereby improving connection stability. The tail end of the press-fit bolt 18 can be completely hidden inside the protrusion 1313, which can prevent the press-fit bolt 18 from being corroded and thus causing a deterioration in the connection effect.

[0116] Please combine Figure 2 Reference Figure 17 , Figure 19 as well as Figure 20 In some embodiments, the battery housing 103 further includes a sealing gasket 15 disposed along the outer periphery of the liquid cooling plate 11. The sealing gasket 15 surrounding the first region A1 is located between the frame assembly 12 and the bottom protective plate 14. The sealing gasket 15 surrounding the second region A2 is located between the mounting platform 131 and the bottom protective plate 14. The sealing gasket 15 has at least one notch X9 (see...). Figure 20 The notch X9 is used to avoid the raised portion 1312.

[0117] Specifically, the sealing gasket 15 can be considered as a ring, and it is arranged along the edge of the bottom protective plate 14, that is, the sealing gasket 15 and the edge shape of the bottom protective plate 14 are the same. The sealing gasket 15 can be made of elastic materials such as silicone rubber, foamed silicone, and ethylene propylene diene monomer (EPDM). A portion of the sealing gasket 15 is disposed between the frame assembly 12 and the bottom protective plate 14, and is compressed by the frame assembly 12 and the bottom protective plate 14 to achieve a sealing effect between them. Another portion of the sealing gasket 15 is disposed between the mounting platform 131 and the bottom protective plate 14, and is compressed by the mounting platform 131 and the bottom protective plate 14 to achieve a sealing effect between them.

[0118] The sealing gasket 15 located between the mounting platform 131 and the bottom protective plate 14 has a notch X9, which corresponds to the raised portion 1312 of the mounting platform 131. The notch X9 on the sealing gasket 15 is used to avoid the raised portion 1312 (i.e., the raised portion 1312 is located in the notch X9), so that the raised portion 1312 can abut against the edge of the bottom protective plate 14. The number of notches X9 is the same as the number of raised portions 1312. When there are multiple notches X9, multiple notches X9 are provided in a one-to-one correspondence with multiple raised portions 1312. The shape of the notch X9 and the shape of the raised portion 1312 can be the same or different, and there is no limitation here.

[0119] Please refer to Figure 21 This application also provides a power supply device 101, which includes a battery module 104 and a battery housing 103 as described in any of the above embodiments, with the battery module 104 placed in the battery housing 103. In the vehicle field, the power supply device 101 can also be referred to as a battery pack, and a battery pack can contain multiple battery modules 104 connected in series and parallel, a battery management system (BMS), a thermal management system, etc.

[0120] Please refer to Figure 22 This application also provides an electrical device 100, which includes a device body 102 and the aforementioned power supply device 101, wherein the power supply device 101 is used to supply power to the device body 102.

[0121] The electrical equipment 100 may include, but is not limited to, vehicles (such as electric cars, cruise ships, airplanes, etc.), digital products (such as computers, audio equipment, digital cameras, etc.), home appliances (such as vacuum cleaners, robot vacuum cleaners, washing machines, etc.), processing equipment (such as cutting machines, electric drills, angle grinders, etc.), health monitoring equipment (such as portable electrocardiographs, blood glucose meters, etc.), and electric toys (such as remote control cars, drones, remote control boats, etc.). This application only illustrates the electrical equipment 100 as an electric car. For electric cars, they may include, but are not limited to, cars, buses, trucks, off-road vehicles, electric bicycles, etc., and their equipment body 102 may include a frame, various electrical loads (such as power systems, lighting systems, etc.).

[0122] The technical means disclosed in this application are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. A battery housing, characterized in that, The battery housing (103) includes: The liquid cooling plate (11) has a receiving cavity (X1) for receiving coolant, and the liquid cooling plate (11) includes an adjacent first region (A1) and a second region (A2). A frame component (12) is disposed in the first region (A1) and defines a space for accommodating the battery module; and A water tap assembly (13) includes a mounting platform (131), an external water tap (132), and a first sealing ring (133). The mounting platform (131) is located in the second region (A2) and connected to the outer wall of the frame assembly (12). The external water tap (132) includes a tube body (1321) and a flange (1322). The flange (1322) is connected around the outer periphery of the tube body (1321). The mounting platform (131) is provided with a mounting hole (X2). The tube body (1321) is inserted into the mounting hole (X2) and communicates with the receiving cavity (X1). The flange (1322) abuts against the outer surface (M1) of the mounting platform (131) facing away from the liquid cooling plate (11). The first sealing ring (133) is located between the flange (1322) and the mounting platform (131).

2. The battery housing as described in claim 1, characterized in that, The flange portion (1322) has a first mounting groove (X3) on the side facing the outer surface (M1), and the first sealing ring (133) is at least partially disposed in the first mounting groove (X3) of the flange portion (1322); And / or, the mounting platform (131) has a first mounting groove (X3) on its outer surface (M1), and the first sealing ring (133) is at least partially located in the first mounting groove (X3) of the mounting platform (131).

3. The battery housing as described in claim 1, characterized in that, The liquid cooling plate (11) includes a plate body (111) and a cold plate water nozzle (112). The plate body (111) has the receiving cavity (X1). The cold plate water nozzle (112) protrudes from the plate body (111) and communicates with the receiving cavity (X1). The cold plate water nozzle (112) is inserted into the mounting hole (X2), and the outer side wall of the cold plate water nozzle (112) is spaced apart from the inner side wall of the mounting hole (X2). The tube body (1321) of the external water nozzle (132) is inserted into the cold plate water nozzle (112), or the cold plate water nozzle (112) is inserted into the tube body (1321) of the external water nozzle (132).

4. The battery housing as described in claim 3, characterized in that, The tube body (1321) of the external water nozzle (132) is sealed to the cold plate water nozzle (112), and the water nozzle assembly (13) further includes at least one second sealing ring (134), which is disposed between the tube body (1321) of the external water nozzle (132) and the cold plate water nozzle (112). The tube body (1321) of the external water nozzle (132) is inserted into the cold plate water nozzle (112), and a second mounting groove (X5) is provided on the outer periphery of the tube body (1321) of the external water nozzle (132), and the second sealing ring (134) is at least partially provided in the second mounting groove (X5).

5. The battery housing as described in claim 3, characterized in that, The flange portion (1322) of the external water nozzle (132) is also provided with a relief groove (X4), the relief groove (X4) faces the mounting hole (X2), the material thickness of the end of the cold plate water nozzle (112) away from the plate body (111) is less than the width of the relief groove (X4), and the relief groove (X4) is used to space the end of the cold plate water nozzle (112) away from the plate body (111) from the flange portion (1322).

6. The battery housing as described in claim 3, characterized in that, The cold plate water tap (112) includes a water tap seat (1122) and a water tap tube (1121). The water tap seat (1122) is connected to the plate body (111). The water tap tube (1121) is connected to the side of the water tap seat (1122) away from the plate body (111). The tube body (1321) of the external water tap (132) is inserted into the water tap tube (1121). The tube body (1321) of the external water tap (132) is opposite to and spaced apart from the water tap seat (1122).

7. The battery housing as described in claim 3, characterized in that, The wall of the mounting hole (X2) extends longitudinally from the outer surface (M1) of the mounting platform (131) to the plate (111). A preset gap (Y2) is formed between the wall of the mounting hole (X2) and the cold plate water nozzle (112). The mounting platform (131) is provided with a third mounting groove (X6) on the side away from the outer surface (M1). The water nozzle assembly (13) also includes a third sealing ring (135). The third sealing ring (135) is located between the mounting platform (131) and the plate (111), and is located in the third mounting groove (X6) and surrounds the mounting hole (X2).

8. The battery housing as described in claim 1, characterized in that, The mounting platform (131) is provided with two mounting holes (X2), and the water tap assembly (13) includes two external water taps (132), which are respectively disposed in the two mounting holes (X2); The external water nozzle (132) further includes a first protrusion (1323) and a second protrusion (1324), the first protrusion (1323) and the second protrusion (1324) being respectively connected to opposite sides of the flange (1322), the first protrusion (1323) and the second protrusion (1324) being used to connect the connector (136) so that the external water nozzle (132) is fixed to the mounting platform (131); The arrangement direction of the two external water nozzles (132) is not parallel to the arrangement direction of the first external protrusion (1323) and the second external protrusion (1324).

9. The battery housing as described in any one of claims 1 to 8, characterized in that, The battery housing (103) also includes a bottom protective plate (14), which is located on the side of the liquid cooling plate (11) away from the frame assembly (12); The edges of the frame assembly (12) and the bottom guard plate (14) are connected by rivet nuts (17) and rivet bolts (16), and the annular boss (171) on the rivet nut (17) is located between the frame assembly (12) and the bottom guard plate (14); The mounting platform (131) includes a mounting body (1311) and at least one raised portion (1312), the raised portion (1312) protruding from the edge of the mounting body (1311) facing the bottom guard plate (14), the raised portion (1312) abutting against the bottom guard plate (14), and the thickness of the raised portion (1312) is the same as the thickness of the annular boss (171).

10. The battery housing as described in claim 9, characterized in that, The mounting platform (131) further includes at least one protrusion (1313), which is located on the side of the mounting body (1311) away from the raised part (1312). The mounting platform (131) is connected to the bottom guard plate (14) by a press-fit bolt (18), which passes through the bottom guard plate (14) and the raised part (1312) in sequence to form a connection with the protrusion (1313).

11. The battery housing as described in claim 9, characterized in that, The battery housing (103) also includes a sealing gasket (15), which is disposed along the outer periphery of the liquid cooling plate (11). The sealing gasket (15) surrounding the first region (A1) is disposed between the frame assembly (12) and the bottom protective plate (14), and the sealing gasket (15) surrounding the second region (A2) is located between the mounting platform (131) and the bottom protective plate (14). The sealing gasket (15) is provided with at least one notch (X9), which is used to avoid the raised portion (1312).

12. A power supply device, characterized in that, The power supply device (101) includes a battery module (104) and a battery housing (103) as described in any one of claims 1 to 11, wherein the battery module (104) is placed in the battery housing (103).

13. An electrical appliance, characterized in that, The electrical equipment (100) includes a device body (102) and a power supply device (101) as described in claim 12, the power supply device (101) being used to supply power to the device body (102).

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