Battery box and electric vehicle

Abstract

The invention provides a battery box and an electric vehicle. The battery box comprises a box body with an accommodating cavity; the battery module is positioned in the accommodating cavity, the battery module comprises a first battery cell unit and a second battery cell unit, the first battery cell unit comprises a plurality of first battery cells, and the plurality of first battery cells are arranged at intervals along a first direction; the second battery cell unit comprises a plurality of second battery cells, and the plurality of second battery cells are arranged at intervals along the first direction; the temperature adjusting assembly comprises a direct cooling plate, and the direct cooling plate is arranged in the box body and communicates with a refrigerating system of the electric vehicle; in the second direction, the direct cooling plate is located between the end part of the adjacent first battery cell and the end part of the adjacent second battery cell, and a channel for a refrigerant to flow is formed in the direct cooling plate, so that heat exchange is performed on the first battery cell and the second battery cell; wherein an included angle is formed between the first direction and the second direction. According to the invention, the number of required direct cooling plates is reduced, the cooling efficiency is improved, and no extra cooling equipment is needed.

Description

Technical Field

[0001] The present application relates to a battery box and an electric vehicle, belonging to the technical field of new energy batteries. Background Art

[0002] With the development of the new energy industry, new energy vehicles powered by lithium-ion batteries are becoming increasingly popular among consumers. However, when thermal runaway occurs in the battery, the safety of the passengers has attracted much attention.

[0003] During the process of conceiving and implementing this application, the applicant discovered that there are at least the following problems: the current battery module basically uses a water-cooling belt design, each column of battery cells requires a water-cooling belt, and the groups of cooling belts need to be connected in series through pipes, resulting in complex pipe layout and bringing difficulties to the design.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Summary of the Invention

[0005] The present application provides a battery box and an electric vehicle, which reduce the number of required direct cooling plates, improve cooling efficiency, and do not require additional cooling equipment.

[0006] The present application provides a battery box provided in an electric vehicle, the battery box comprising:

[0007] A box body having a receiving cavity;

[0008] A battery module is located in the accommodating cavity, the battery module includes a first battery cell unit and a second battery cell unit, the first battery cell unit includes a plurality of first battery cells, and the plurality of first battery cells are spaced apart along a first direction;

[0009] The second battery cell unit includes a plurality of second battery cells, and the plurality of second battery cells are spaced apart along the first direction;

[0010] The temperature control component includes a direct cooling plate, which is arranged in the box and connected to the refrigeration system of the electric vehicle;

[0011] Along the second direction, the direct cooling plate is located between the end of the adjacent first battery cell and the end of the adjacent second battery cell, and a channel for the flow of refrigerant is provided in the direct cooling plate to exchange heat between the first battery cell and the second battery cell;

[0012] There is an angle between the first direction and the second direction.

[0013] The beneficial effects of the present application are: by sandwiching the direct cooling plate between the first battery cell and the second battery cell, it is possible to cool the first battery cell and the second battery cell at the same time, thereby improving the cooling efficiency, ensuring that the battery maintains a suitable temperature during operation, and extending the service life of the battery; since the direct cooling plate can cool the first battery cell and the second battery cell on both sides at the same time, the number of required direct cooling plates is reduced, thereby reducing material costs and manufacturing complexity; in addition, by directly connecting the direct cooling plate to the refrigeration system of the electric vehicle, the existing air-conditioning refrigeration system of the electric vehicle is directly utilized without the need for additional cooling equipment, eliminating the additional equipment required in traditional liquid cooling solutions, further reducing costs, reducing the weight of the entire vehicle, and also reducing the energy consumption of the entire vehicle.

[0014] In some optional embodiments, the temperature adjustment assembly further includes at least two heating elements, and along the second direction, the at least two heating elements are respectively attached to opposite sides of the direct cooling plate.

[0015] It should be noted that the heating elements are respectively attached to opposite sides of the direct cooling plate, so that they can heat the first battery cell and the second battery cell at the same time, ensuring that the battery can quickly reach the optimal operating temperature in a low temperature environment, thereby improving the performance and efficiency of the battery.

[0016] In some optional embodiments, the heating element is a heating film;

[0017] The temperature control component also includes a power connection terminal, which is arranged at the end of the heating element and is configured to be connected to the power supply of the battery box.

[0018] It should be noted that the heating film has excellent thermal conductivity and can quickly and evenly heat the battery cell, ensuring that the battery quickly reaches the optimal operating temperature in a low-temperature environment, thereby improving the performance and efficiency of the battery.

[0019] In some optional embodiments, the battery box further includes at least two thermally conductive structural adhesives;

[0020] One of the at least two thermally conductive structural adhesives is disposed between one of the at least two heating elements and the first battery core;

[0021] The other one of the at least two heat-conducting structural adhesives is disposed between the other one of the two heating elements and the second battery core.

[0022] It should be noted that the thermal conductive structural adhesive filled between the heating film and the battery cell can effectively conduct heat, ensuring that the heat energy generated by the heating film is quickly and evenly transferred to the battery cell, improving the heating efficiency and enabling the battery to reach the operating temperature faster in a low temperature environment.

[0023] In some optional embodiments, the battery box further includes a rubber strip, which is provided on a side of the thermally conductive structural adhesive facing away from the direct cooling plate, and extends along the first direction.

[0024] It should be noted that by providing a rubber strip between the thermally conductive structural adhesive and the battery cell, the amount of thermally conductive structural adhesive used can be effectively reduced, and reducing its amount can significantly reduce the overall material cost.

[0025] In some optional embodiments, the battery box further includes a pipeline assembly, which is provided in the box body and includes a feed pipe and a discharge pipe that are interconnected;

[0026] The feed pipe is connected to the discharge end of the refrigeration system of the electric vehicle and the feed port of the direct cooling plate;

[0027] The discharge pipe is connected to the feed end of the refrigeration system of the electric vehicle and the discharge port of the direct cooling plate.

[0028] It should be noted that through the design of the piping assembly, the refrigerant of the refrigeration system can efficiently flow through the direct cooling plate to achieve heat exchange with the battery cells, ensuring that the battery can effectively dissipate heat under high load or high temperature environments and maintain the optimal operating temperature.

[0029] In some optional embodiments, the direct cooling plate includes a direct cooling body and a material guide pipe that are interconnected, the direct cooling body extends along the first direction, and the material guide pipe is provided in the box and is located at the end of the direct cooling body;

[0030] The temperature regulating assembly further includes a separator, which is arranged in the material guiding pipe to separate the material guiding pipe into a feeding channel and a discharging channel along the third direction;

[0031] The feed channel is connected to the feed pipe, and the discharge channel is connected to the discharge pipe;

[0032] There is an angle between the third direction, the first direction and the second direction.

[0033] It should be noted that by setting a partition in the material guide pipe to separate it into a feed channel and a discharge channel, it is ensured that the refrigerant can flow through the direct cooling body efficiently, thereby optimizing the flow path of the refrigerant, reducing flow resistance, and improving cooling efficiency.

[0034] In some optional embodiments, the feed pipe includes a feed body and a first base, the feed body is connected to the discharge end of the refrigeration system of the electric vehicle, the first base is provided on the feed body, the first base has a first mounting portion and a first flow portion, and the first flow portion is connected to the feed body;

[0035] The material guide pipe is provided with a second base, the second base has a second mounting portion and a second circulation portion, and the second circulation portion is connected to the feed channel;

[0036] The first installation portion is connected to the second installation portion, and the first circulation portion is communicated with the second circulation portion.

[0037] It should be noted that the feed pipe includes a feed body and a first base, and the guide pipe has a second base. This modular design allows each component to be manufactured and assembled independently, thereby improving production flexibility and efficiency.

[0038] In some optional embodiments, the discharge pipe includes a discharge body and a third base, the discharge body is connected to the feed end of the refrigeration system of the electric vehicle, the third base is provided on the discharge body, the third base has a third mounting portion and a third flow portion, and the third flow portion is connected to the discharge body;

[0039] The material guide pipe is further provided with a fourth base, the fourth base having a fourth mounting portion and a fourth circulation portion, and the fourth circulation portion is connected to the discharge channel;

[0040] The third installation portion is connected to the fourth installation portion, and the third circulation portion is communicated with the fourth circulation portion.

[0041] It should be noted that the discharge pipe includes a discharge body and a third base, and the guide pipe has a fourth base. This modular design allows each component to be manufactured and assembled independently, improving production flexibility and efficiency.

[0042] In addition, the present application also provides an electric vehicle comprising the above-mentioned battery box.

[0043] The battery box and electric vehicle provided in the present application, the electric vehicle includes a battery box; the battery box includes a box body, which has a accommodating cavity; a battery module is located in the accommodating cavity, the battery module includes a first battery cell unit and a second battery cell unit, the first battery cell unit includes a plurality of first battery cells, and the plurality of first battery cells are arranged at intervals along the first direction; the second battery cell unit includes a plurality of second battery cells, and the plurality of second battery cells are arranged at intervals along the first direction; the temperature control component includes a direct cooling plate, the direct cooling plate is provided in the box body, and is connected to the refrigeration system of the electric vehicle; along the second direction, the direct cooling plate is located between the end of the adjacent first battery cell and the end of the second battery cell, and the direct cooling plate has a channel for the flow of refrigerant to exchange heat between the first battery cell and the second battery cell; wherein, there is an angle between the first direction and the second direction.

[0044] By sandwiching the direct cooling plate between the first battery cell and the second battery cell, it can cool the first battery cell and the second battery cell at the same time, thereby improving the cooling efficiency, ensuring that the battery maintains a suitable temperature during operation, and extending the service life of the battery. Since the direct cooling plate can cool the first battery cell and the second battery cell on both sides at the same time, the number of required direct cooling plates is reduced, thereby reducing material costs and manufacturing complexity. In addition, by directly connecting the direct cooling plate to the refrigeration system of the electric vehicle, the existing air-conditioning refrigeration system of the electric vehicle is directly utilized without the need for additional cooling equipment, eliminating the additional equipment required in traditional liquid cooling solutions, further reducing costs, reducing the weight of the entire vehicle, and also reducing the energy consumption of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and other objects, features and advantages of the embodiments of the present application will become more readily understood through the following detailed description with reference to the accompanying drawings, in which various embodiments of the present application are illustrated by way of example and not limitation, wherein:

[0046] Figure 1 This is a schematic structural diagram of a battery box according to an embodiment of the present application;

[0047] Figure 2 This is an exploded schematic diagram of a battery box according to an embodiment of the present application;

[0048] Figure 3 This is a schematic structural diagram of the lower cover of the battery box according to an embodiment of the present application from a first perspective;

[0049] Figure 4 This is a structural schematic diagram of the lower cover of the battery box according to the embodiment of the present application from a second perspective;

[0050] Figure 5 This is an exploded schematic diagram of the temperature regulating assembly of the lower cover of the battery box according to an embodiment of the present application from a third perspective;

[0051] Figure 6 for Figure 5 A local enlarged schematic diagram of point I in the middle;

[0052] Figure 7 This is a schematic diagram of the assembly of the battery module and the piping assembly in the battery box according to an embodiment of the present application;

[0053] Figure 8 for Figure 7 A partial enlarged schematic diagram of point II in the middle;

[0054] Figure 9 This is a schematic diagram of the assembly of the temperature control component and the piping component in the battery box of an embodiment of the present application from a first perspective;

[0055] Figure 10 This is a schematic diagram of the flow of coolant in a pipe assembly in a battery box according to an embodiment of the present application;

[0056] Figure 11 This is a schematic diagram of the assembly of the temperature control component and the piping component in the battery box according to an embodiment of the present application from a second perspective;

[0057] Figure 12 for Figure 11 A partial enlarged schematic diagram of point III in the middle;

[0058] Figure 13 This is a schematic diagram of the assembly of the temperature control component and the piping component in the battery box according to an embodiment of the present application from a third perspective;

[0059] Figure 14 for Figure 11 A partial enlarged schematic diagram of position IV in the middle;

[0060] Figure 15 This is a schematic diagram of the assembly of the temperature control component and the piping component in the battery box according to an embodiment of the present application from a fourth perspective;

[0061] Figure 16 for Figure 15 A partial enlarged schematic diagram of the V in the middle;

[0062] Figure 17 This is a schematic assembly diagram of the temperature control assembly and the piping assembly in the battery box according to an embodiment of the present application from a fifth perspective;

[0063] Figure 18 for Figure 17 A partial enlarged schematic diagram of point VI in the middle.

[0064] Reference numerals:

[0065] 100-battery box;

[0066] 110- cabinet;

[0067] 111- upper box cover;

[0068] 112-lower box cover;

[0069] 120-battery module;

[0070] 121-first battery cell unit;

[0071] 1211-first battery cell;

[0072] 122-second battery cell unit;

[0073] 1221-second battery cell;

[0074] 130-temperature control component;

[0075] 131-direct cooling plate;

[0076] 1311-direct cooling body;

[0077] 1312- guide tube;

[0078] 132- heating element;

[0079] 133-power terminal;

[0080] 134-Separator;

[0081] 135-thermal insulation foam;

[0082] 136-Second base;

[0083] 1361-second installation part;

[0084] 1362-Second Circulation Department;

[0085] 137-fourth pedestal;

[0086] 1371-fourth installation part;

[0087] 1372-4th Circulation Department;

[0088] 140-thermal conductive structural adhesive;

[0089] 150-strips;

[0090] 160-pipeline assembly;

[0091] 161-feeding pipe;

[0092] 162-discharge pipe;

[0093] 163-temperature sensor;

[0094] 164-first base;

[0095] 1641-first installation part;

[0096] 1642-First Circulation Department;

[0097] 165-feed body;

[0098] 166-discharging body;

[0099] 167-third base;

[0100] 1671-third installation part;

[0101] 1672-Third Circulation Department;

[0102] 170-first fastener;

[0103] 180-Second fastener. DETAILED DESCRIPTION

[0104] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. All other embodiments obtained are within the scope of protection of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0105] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0106] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0107] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0108] During the process of conceiving and implementing this application, the applicant discovered that there are at least the following problems: the current battery module basically uses a water-cooling belt design, each column of battery cells requires a water-cooling belt, and the groups of cooling belts need to be connected in series through pipes, resulting in complex pipe layout and bringing difficulties to the design.

[0109] The battery box proposed in the present application sandwiches a direct cooling plate between the first battery cell and the second battery cell, so that the first battery cell and the second battery cell can be cooled at the same time, thereby improving the cooling efficiency, ensuring that the battery maintains a suitable temperature during operation, and extending the service life of the battery. Since the direct cooling plate can cool the first battery cell and the second battery cell on both sides at the same time, the number of required direct cooling plates is reduced, thereby reducing material costs and manufacturing complexity. In addition, by directly connecting the direct cooling plate to the refrigeration system of the electric vehicle, the existing air-conditioning refrigeration system of the electric vehicle is directly utilized without the need for additional cooling equipment, eliminating the additional equipment required in traditional liquid cooling solutions, further reducing costs, reducing the weight of the entire vehicle, and also reducing the energy consumption of the entire vehicle.

[0110] The battery box provided in this application is described in detail below with reference to specific embodiments.

[0111] Figure 1 This is a schematic diagram of the structure of the battery box according to an embodiment of the present application. Figure 2 This is an exploded diagram of a battery box according to an embodiment of the present application. Figure 3 This is a structural diagram of the lower cover of the battery box in the embodiment of the present application from a first perspective. Figure 4 This is a structural diagram of the lower cover of the battery box in the embodiment of the present application from a second perspective. Figure 5 This is an exploded schematic diagram of the temperature regulating assembly of the lower cover of the battery box according to an embodiment of the present application from a third perspective. Figure 6 for Figure 5 A local enlarged schematic diagram of point I in the middle.

[0112] like Figures 1 to 6 As shown, the embodiment of the present application provides a battery box 100, which is provided in an electric vehicle. The battery box 100 includes:

[0113] The box body 110 has a receiving cavity;

[0114] The battery module 120 is located in the accommodating cavity. The battery module 120 includes a first battery cell unit 121 and a second battery cell unit 122. The first battery cell unit 121 includes a plurality of first battery cells 1211. The plurality of first battery cells 1211 are spaced apart along a first direction.

[0115] The second battery cell unit 122 includes a plurality of second battery cells 1221 , and the plurality of second battery cells 1221 are spaced apart along the first direction;

[0116] The temperature control assembly 130 includes a direct cooling plate 131 , which is disposed in the housing 110 and is connected to the refrigeration system of the electric vehicle;

[0117] Along the second direction, the direct cooling plate 131 is located between the ends of the adjacent first battery core 1211 and the ends of the second battery core 1221. The direct cooling plate 131 has a channel for the flow of refrigerant to exchange heat between the first battery core 1211 and the second battery core 1221.

[0118] There is an angle between the first direction and the second direction.

[0119] It is understandable that the function of the accommodating cavity is to accommodate the battery module 120. It is also not difficult to understand that the accommodating cavity is in a sealed state to prevent side reactions from occurring in the internal systems of the first battery cell 1211 and the second battery cell 1221 in the battery module 120, thereby affecting the performance of the first battery cell 1211 and the second battery cell 1221.

[0120] For example, the size or shape of the accommodating cavity matches the size and shape of the battery module 120. Specifically, corresponding adjustments can be made according to actual conditions, and the embodiments of the present application do not impose any additional restrictions thereon.

[0121] In the embodiment of the present application, the battery module 120 may be configured as a rectangular structure, wherein the battery module 120 may be located inside the box 110 .

[0122] It can be understood that the box 110 can be used to support the battery module 120 .

[0123] The size of the box 110 can be set according to actual needs, and the embodiment of the present application does not impose any additional restrictions thereon.

[0124] In addition, it should be noted that this embodiment does not limit the shape of the box body 110. For example, the box body 110 can be in a regular shape such as a cuboid or a cylinder. Of course, the box body 110 can also be in other irregular shapes.

[0125] In a possible implementation, the box body 110 may be a rectangular structure, and the size of the box body 110 may be greater than or equal to the size of the battery module 120 , so that the box body 110 can carry the battery module 120 .

[0126] like Figure 1 and Figure 2 As shown, in some embodiments, the box body 110 includes an upper box cover 111 and a lower box cover 112, and the upper box cover 111 and the lower box cover 112 are buckled together to form a receiving cavity.

[0127] It should be noted that the battery cell consists of a positive electrode sheet, a negative electrode sheet and a separator arranged between the two, and the battery cell is formed by winding or stacking. The positive electrode sheet includes a positive electrode collector and a positive electrode active material. The positive electrode collector can be made of metal materials such as aluminum foil, nickel foil, stainless steel, or a composite foil formed by a combination of metal and insulating materials. The positive electrode active material includes a positive electrode active main material, a conductive agent, an adhesive, etc. The positive electrode active main material includes one or more lithium-containing positive electrode active materials such as lithium iron phosphate, a ternary material containing nickel, cobalt and manganese, and lithium iron manganese phosphate.

[0128] Similarly, the negative electrode sheet includes a negative electrode current collector and a negative electrode active material. The negative electrode current collector can be made of metal materials such as copper foil, aluminum foil, stainless steel, or a composite foil formed by a combination of metal and insulating materials; the negative electrode active material includes a negative electrode active main material, a conductive agent, an adhesive, etc. The negative electrode active main material includes one or more negative electrode active main materials such as artificial graphite, natural graphite, silicon carbon, silicon oxide, lithium titanate, etc.

[0129] The tab serves as the current output end of the battery cell, and the tab is connected to the positive electrode sheet or the negative electrode sheet in one piece or in separate pieces.

[0130] The diaphragm acts as an insulating layer, preventing contact between the positive and negative electrodes, which could cause a short circuit within the battery cell. It also acts as a semi-permeable layer, preventing the passage of larger molecules while allowing smaller charged ions. The base of the tab is the edge of the active material coating area of ​​the electrode.

[0131] It should be noted that the first battery cell unit 121 and the second battery cell unit 122 have the same structure, and there are at least two of the first battery cell unit 121 and the second battery cell unit 122 .

[0132] In some embodiments, along the second direction, the first battery cell unit 121 , the second battery cell unit 122 , the first battery cell unit 121 , and the second battery cell unit 122 are spaced apart.

[0133] In some embodiments, the box body 110 further includes a crossbeam, which divides the accommodating cavity into a plurality of cavities.

[0134] Among them, a first battery cell unit 121 and a second battery cell unit 122 form a group and are located in the same cavity, and another first battery cell unit 121 and another second battery cell unit 122 form a group and are located in the same cavity.

[0135] It should be noted that a direct cooling plate 131 is provided between the first battery cell unit 121 and the second battery cell unit 122 in the same cavity. The direct cooling plate 131 is used to perform heat exchange between the first battery cell unit 121 and the second battery cell unit 122 .

[0136] Furthermore, the first battery cell unit 121 includes a plurality of first battery cells 1211, which are spaced apart along the first direction X, wherein the pole tabs of the first battery cells 1211 are located along the second direction Y at an end of the first battery cell 1211 away from the direct cooling plate 131, that is, the pole tabs of the first battery cells 1211 are facing the side of the box body 110, rather than upward.

[0137] Correspondingly, the second battery cell unit 122 includes a plurality of second battery cells 1221, which are arranged at intervals along the first direction X, wherein the pole ears of the second battery cells 1221 are located along the second direction Y at the end of the first battery cell 1211 away from the direct cooling plate 131, that is, the pole ears of the second battery cells 1221 are facing the side of the box body 110, rather than upward.

[0138] Along the second direction Y, the direct cooling plate 131 abuts between the ends of the adjacent first battery cell 1211 and the ends of the second battery cell 1221, that is, the direct cooling plate 131 abuts between the conductive ends of the adjacent first battery cell 1211 and the conductive ends of the second battery cell 1221 to exchange heat between the first battery cell 1211 and the second battery cell 1221.

[0139] In some embodiments, the first battery cell 1211 and the second battery cell 1221 can be cylindrical battery cells, which are arranged end to end in groups. Compared with the conventional water-cooling belt solution, with the same group arrangement, the two columns of battery cells only need a direct cooling plate 131 in the middle. Therefore, the number of direct cooling plates 131 is reduced by half compared to the water-cooling belt, the pipeline design is simpler, and the cost is greatly reduced.

[0140] It should be noted that conventional cylindrical PACK cells are grouped in a standing position. To break the cylindrical surface cooling and take into account the cooling effect, the cylindrical cells are arranged lying down, and a direct cooling solution is implemented at the ends of the cells. The cold plate is sandwiched between the two rows of first cells 1211 and second cells 1221, and the ends of the first cells 1211 and the ends of the second cells 1221 are butted together to achieve a double-sided cooling effect of the direct cooling plate 131. This simplifies the stacking of the battery modules 120, reduces the number of direct cooling plates 131, and optimizes the pipeline layout.

[0141] In addition, the direct cooling plate 131 is connected to the refrigeration system of the electric vehicle. Compared with the traditional liquid cooling solution, the direct cooling solution reduces a water pump system on the vehicle end and directly adopts the original air conditioning and refrigeration system of the electric vehicle, greatly reducing the cost and vehicle weight.

[0142] Wherein, X represents a first direction, which may be the width direction of the box 110 or the length direction of the box 110 ; correspondingly, Y represents a second direction, which may be the width direction of the box 110 or the length direction of the box 110 .

[0143] For ease of description, the first direction X may be the length direction of the box body 110 , and the second direction Y may be the width direction of the box body 110 .

[0144] Through the above-mentioned arrangement, that is, by sandwiching the direct cooling plate 131 between the first battery cell 1211 and the second battery cell 1221, the first battery cell 1211 and the second battery cell 1221 can be cooled at the same time, thereby improving the cooling efficiency, ensuring that the battery maintains a suitable temperature during operation, and extending the service life of the battery. Since the direct cooling plate 131 can cool the first battery cell 1211 and the second battery cell 1221 on both sides at the same time, the number of required direct cooling plates 131 is reduced, thereby reducing material cost and manufacturing complexity. In addition, by directly connecting the direct cooling plate 131 to the refrigeration system of the electric vehicle, the existing air-conditioning refrigeration system of the electric vehicle is directly utilized without the need for additional cooling equipment, eliminating the additional equipment required in the traditional liquid cooling solution, further reducing costs, reducing the weight of the entire vehicle, and also reducing the energy consumption of the entire vehicle.

[0145] like Figures 1 to 6 As shown, in some optional embodiments, the temperature adjustment component 130 further includes at least two heating elements 132 , and along the second direction, the at least two heating elements 132 are respectively attached to opposite sides of the direct cooling plate 131 .

[0146] It should be noted that the heating elements 132 are respectively attached to opposite sides of the direct cooling plate 131, so that they can heat the first battery cell 1211 and the second battery cell 1221 at the same time, ensuring that the battery can quickly reach the optimal operating temperature in a low temperature environment, thereby improving the performance and efficiency of the battery.

[0147] Furthermore, the heating element 132 is able to quickly respond to temperature changes and provide immediate heat compensation, which is crucial for starting and operating the electric vehicle in cold environments, ensuring the reliability of the vehicle in various climate conditions.

[0148] It should be noted that due to the arrangement of the heating element 132, heat can be evenly transferred to various parts of the first battery cell 1211 and the second battery cell 1221, avoiding local overheating or overcooling, and further protecting the life and safety of the battery.

[0149] Furthermore, the integrated design of the heating element 132 and the direct cooling plate 131 simplifies the structure of the battery box 100 , reduces additional installation space and complexity, and also reduces manufacturing and maintenance costs.

[0150] In some embodiments, the battery box 100 further includes a control system, through which the heating element 132 can be adjusted according to actual needs, thereby avoiding unnecessary energy consumption and improving the energy efficiency of the entire vehicle.

[0151] like Figures 1 to 6 As shown, in some optional embodiments, the heating element 132 is a heating film;

[0152] The temperature control assembly 130 further includes a power connection terminal 133 , which is disposed at an end of the heating element 132 and is configured to be connected to a power supply of the battery box 100 .

[0153] It should be noted that the heating film has excellent thermal conductivity and can quickly and evenly heat the battery cell, ensuring that the battery quickly reaches the optimal operating temperature in a low-temperature environment, thereby improving the performance and efficiency of the battery.

[0154] Furthermore, the heating film is thinner and lighter than conventional heating elements, which helps to reduce the overall weight of the battery box 100 while saving space, making the design of the battery box 100 more compact.

[0155] In some embodiments, the heating film can be customized according to the specific shape and size of the battery box 100, providing a more flexible design solution to ensure maximum heating effect.

[0156] Furthermore, due to the small thermal inertia of the heating film, it can quickly respond to temperature changes and provide instant heat compensation, ensuring the reliability of starting and operating electric vehicles in cold environments.

[0157] It should be noted that the provision of the power connection terminal 133 enables the heating film to be conveniently connected to the power supply of the battery box 100 , thereby achieving efficient transmission and control of power and simplifying the complexity of electrical connection.

[0158] In some embodiments, there are two direct cooling plates 131 and correspondingly there are four heating elements 132. The four heating elements 132 have four power connection terminals 133, and the four power connection terminals 133 are respectively located on the same side of the box body 110, which facilitates unified power connection of the power supply integrated in the battery box 100 and facilitates wiring.

[0159] Continue to refer Figures 1 to 6 , in some optional embodiments, the battery box 100 further includes at least two thermally conductive structural adhesives 140;

[0160] One of the at least two thermally conductive structural adhesives 140 is disposed between one of the at least two heating elements 132 and the first battery cell 1211 ;

[0161] The other one of the at least two thermally conductive structural adhesives 140 is disposed between the other one of the two heating elements 132 and the second battery core 1221 .

[0162] It should be noted that the thermal conductive structural adhesive 140 is filled between the heating film and the battery cell, which can effectively conduct heat and ensure that the heat energy generated by the heating film is quickly and evenly transferred to the battery cell, thereby improving the heating efficiency and enabling the battery to reach the operating temperature faster in a low temperature environment.

[0163] Furthermore, the design of the direct cooling plate 131 with the heating film directly attached to both sides enables cooling and heating functions to be achieved in the same structure. The use of thermal conductive structural adhesive 140 further optimizes the heat conduction path, ensuring the dual cooling and heating effects.

[0164] In addition, the thermally conductive structural adhesive 140 not only has good thermal conductivity, but also provides a certain mechanical strength, helping to fix the position of the heating film and the battery cell, thereby enhancing the structural stability of the battery module 120.

[0165] The thermally conductive structural adhesive 140 can fill the tiny gap between the heating film and the surface of the battery cell, reduce thermal resistance, prevent the occurrence of local overheating, and improve the overall reliability and safety of the battery box 100.

[0166] Through effective thermal management, the battery box 100 can maintain stable performance in a wider range of ambient temperatures, thereby improving the adaptability and market competitiveness of electric vehicles.

[0167] In some embodiments, the thermal conductive structural adhesive 140 is disposed on a side of the heating element 132 facing away from the direct cooling plate 131 .

[0168] Continue to refer Figures 1 to 6 In some optional embodiments, the battery box 100 further includes a rubber strip 150 , which is disposed on a side of the thermal conductive structural adhesive 140 away from the direct cooling plate 131 , and extends along the first direction.

[0169] It should be noted that by providing the adhesive strip 150 between the thermally conductive structural adhesive 140 and the battery cell, the usage of the thermally conductive structural adhesive 140 can be effectively reduced, and reducing its usage can significantly reduce the overall material cost.

[0170] The provision of the adhesive strip 150 helps to precisely control the thickness of the thermally conductive structural adhesive 140 , ensuring the optimization of the heat conduction path, thereby improving the heat conduction efficiency and helping to transfer heat from the heating film to the battery cell, or from the battery cell to the direct cooling plate 131 more quickly.

[0171] In addition, the adhesive strip 150 provides additional support and cushioning, helping to fix the position of the thermal conductive structural adhesive 140 and the battery cell, thereby enhancing the structural stability and shock resistance of the battery module 120 .

[0172] Furthermore, by using the adhesive strip 150 , the thickness of the thermally conductive structural adhesive 140 can be better controlled to ensure its uniform distribution, thereby avoiding an increase in local thermal resistance due to uneven thickness.

[0173] In addition, the cushioning effect of the adhesive strip 150 helps absorb stress caused by thermal expansion or mechanical vibration, reduces the risk of cracking or falling off of the thermal conductive structural adhesive 140, and improves the overall reliability and durability of the battery box 100.

[0174] In some embodiments, at least two adhesive strips 150 are provided on a thermally conductive structural adhesive 140 . The adhesive strip 150 is located in the middle of the battery cell. The provision of at least two adhesive strips 150 ensures the stability of the battery cell.

[0175] Figure 7 This is a schematic diagram of the assembly of the battery module and the piping assembly in the battery box of the embodiment of the present application. Figure 8 for Figure 7 A partial enlarged schematic diagram of point II in the middle. Figure 9 This is a schematic diagram of the assembly of the temperature control component and the piping component in the battery box of the embodiment of the present application from the first perspective. Figure 10 Schematic diagram of the flow of coolant in the pipe assembly of the battery box according to an embodiment of the present application.

[0176] like Figures 4 to 10 As shown, in some optional embodiments, the battery box 100 further includes a pipe assembly 160, which is provided in the box body 110, and the pipe assembly 160 includes a feed pipe 161 and a discharge pipe 162 that are interconnected;

[0177] The feed pipe 161 is connected to the discharge end of the refrigeration system of the electric vehicle and the feed port of the direct cooling plate 131;

[0178] The discharge pipe 162 is connected to the feed end of the refrigeration system of the electric vehicle and the discharge port of the direct cooling plate 131 .

[0179] It should be noted that through the design of the piping assembly 160 , the refrigerant of the refrigeration system can efficiently flow through the direct cooling plate 131 to achieve heat exchange with the battery cell, ensuring that the battery can effectively dissipate heat under high load or high temperature environment and maintain the optimal operating temperature.

[0180] Furthermore, the provision of the feed pipe 161 and the discharge pipe 162 enables seamless integration of the battery box 100 with the electric vehicle refrigeration system, utilizing the existing refrigeration system for cooling without the need for additional cooling equipment, thus simplifying the system design.

[0181] It should be noted that the design of piping assembly 160 ensures an optimized refrigerant flow path within direct cooling plate 131, reducing flow resistance and heat loss, and improving cooling efficiency. Piping assembly 160 can be adjusted based on the specific design of battery box 100, providing a flexible layout solution to accommodate different vehicle models and battery configurations.

[0182] Furthermore, the secure connection and optimized design of the pipe assembly 160 reduce the risk of leakage and failure, thereby improving the reliability of the entire thermal management system.

[0183] In some embodiments, refrigerant, cooling liquid, etc. may flow through the feed pipe 161 and the discharge pipe 162 , and the specific details are not limited here.

[0184] In some embodiments, the feed pipe 161 and the discharge pipe 162 may be aluminum tubes. In order to prevent condensed water from forming on their peripheries, thermal insulation cotton may be wrapped around the periphery of at least one of the feed pipe 161 and the discharge pipe 162 .

[0185] In some embodiments, the pipe assembly 160 further includes a temperature sensor 163 . The temperature sensor 163 is disposed on the feed pipe 161 to monitor the temperature of the refrigerant flowing in the feed pipe 161 .

[0186] In some embodiments, a thermal insulation foam 135 is provided at the bottom of the lower case cover 112 . The thermal insulation foam 135 is located between the battery module 120 and the bottom of the lower case cover 112 to support the battery module 120 and provide a buffer.

[0187] Figure 11 This is a schematic diagram of the assembly of the temperature control component and the pipeline component in the battery box of the embodiment of the present application from a second perspective. Figure 12 for Figure 11 A partial enlarged schematic diagram of point III in the middle.

[0188] like Figures 4 to 12 As shown, in some optional embodiments, the direct cooling plate 131 includes a direct cooling body 1311 and a material guide pipe 1312 that are interconnected. The direct cooling body 1311 extends along the first direction. The material guide pipe 1312 is provided in the box 110 and is located at the end of the direct cooling body 1311.

[0189] The temperature regulating assembly 130 further includes a partition 134 , which is disposed in the material guiding tube 1312 to separate the material guiding tube 1312 into a feeding channel and a discharging channel along the third direction;

[0190] The feed channel is connected to the feed pipe 161, and the discharge channel is connected to the discharge pipe 162;

[0191] There is an angle between the third direction, the first direction and the second direction.

[0192] It should be noted that by setting a partition 134 in the guide tube 1312, it is divided into a feed channel and a discharge channel, ensuring that the refrigerant can flow through the direct cooling body 1311 efficiently, optimizing the flow path of the refrigerant, reducing flow resistance, and improving cooling efficiency.

[0193] It is understandable that the provision of the partition 134 effectively prevents the coolant in the feed channel from entering the discharge channel, thereby avoiding flow chaos of the coolant or refrigerant.

[0194] That is to say, the guide tube 1312 is divided into an independent feed channel and a discharge channel by the partition 134, which reduces the mixed flow and turbulence during the flow of the refrigerant and improves the stability and reliability of the system.

[0195] Furthermore, the direct cooling body 1311 extends along the first direction X, and the material guide tube 1312 is located at its end, making the design of the entire direct cooling plate 131 more compact, helping to save space and adapting to the compact layout requirements of the battery box 100.

[0196] It should be noted that Z represents a third direction, and the third direction Z may be a thickness direction of the box body 110 .

[0197] In some embodiments, the divider 134 may be a partition.

[0198] In some embodiments, a notch is defined on the guide tube 1312 , and the separator 134 can be installed in the notch.

[0199] In some embodiments, along the third direction, the feed channel is located above the discharge channel.

[0200] Figure 13 This is a schematic diagram of the assembly of the temperature control component and the pipeline component in the battery box of the embodiment of the present application from a third perspective. Figure 14 for Figure 11 A partial enlarged schematic diagram of IV in the middle. Figure 15 This is a schematic diagram of the assembly of the temperature control component and the pipeline component in the battery box of the embodiment of the present application from the fourth perspective. Figure 16 for Figure 15 A partial enlarged schematic diagram of the V in the middle. Figure 17 This is a schematic diagram of the assembly of the temperature control component and the piping component in the battery box of the embodiment of the present application from the fifth perspective. Figure 18 for Figure 17 A partial enlarged schematic diagram of point VI in the middle.

[0201] like Figures 4 to 18As shown, in some optional embodiments, the feed pipe 161 includes a feed body 165 and a first base 164. The feed body 165 is connected to the discharge end of the refrigeration system of the electric vehicle. The first base 164 is provided on the feed body 165. The first base 164 has a first mounting portion 1641 and a first flow portion 1642. The first flow portion 1642 is connected to the feed body 165.

[0202] The material guide tube 1312 is provided with a second base 136 , the second base 136 has a second mounting portion 1361 and a second circulation portion 1362 , and the second circulation portion 1362 is communicated with the feed channel;

[0203] The first mounting portion 1641 is connected to the second mounting portion 1361 , and the first circulation portion 1642 is communicated with the second circulation portion 1362 .

[0204] It should be noted that the feed pipe 161 includes a feed body 165 and a first base 164, and the guide pipe 1312 has a second base 136. This modular design allows each component to be manufactured and assembled independently, thereby improving production flexibility and efficiency.

[0205] The first circulation portion 1642 is connected to the feed body 165, and the second circulation portion 1362 is connected to the feed channel. The first circulation portion 1642 and the second circulation portion 1362 are connected to each other, thereby achieving efficient fluid transfer. This design ensures the smooth flow of refrigerant from the refrigeration system to the direct cooling plate 131, thereby optimizing the cooling effect.

[0206] In addition, the first mounting portion 1641 is connected to the second mounting portion 1361 to ensure the installation between the feeding pipe 161 and the material guiding pipe 1312 .

[0207] In some embodiments, the first base 164 is welded to the feed body 165 , and the first mounting portion 1641 is connected to the second mounting portion 1361 via a first fastener 170 .

[0208] For example, the first fastener 170 may be a bolt.

[0209] In some embodiments, the first circulation portion 1642 extends into the second circulation portion 1362. Since both are made of aluminum, a sealing ring can be added during assembly to ensure the sealing of fluid flow.

[0210] like Figures 4 to 18As shown, in some optional embodiments, the discharge pipe 162 includes a discharge body 166 and a third base 167. The discharge body 166 is connected to the feed end of the refrigeration system of the electric vehicle. The third base 167 is provided on the discharge body 166. The third base 167 has a third mounting portion 1671 and a third flow portion 1672. The third flow portion 1672 is connected to the discharge body 166.

[0211] The material guide pipe 1312 is further provided with a fourth base 137 , which has a fourth mounting portion 1371 and a fourth circulation portion 1372 , and the fourth circulation portion 1372 is connected to the discharge channel;

[0212] The third mounting portion 1671 is connected to the fourth mounting portion 1371 , and the third circulation portion 1672 is communicated with the fourth circulation portion 1372 .

[0213] It should be noted that the discharge pipe 162 includes a discharge body 166 and a third base 167, and the guide pipe 1312 has a fourth base 137. This modular design allows each component to be manufactured and assembled independently, thereby improving production flexibility and efficiency.

[0214] The third circulation part 1672 is connected to the discharge body 166, and the fourth circulation part 1372 is connected to the discharge channel. The third circulation part 1672 and the fourth circulation part 1372 are connected, which realizes the efficient discharge of the refrigerant and ensures that the refrigerant can smoothly return to the refrigeration system after passing through the direct cooling plate 131, thereby optimizing the overall cooling cycle.

[0215] The connection design between the third mounting portion 1671 and the fourth mounting portion 1371 simplifies the installation and maintenance process, reduces the requirements for precise alignment, and reduces assembly difficulty and time.

[0216] In addition, the third mounting portion 1671 is connected to the fourth mounting portion 1371 to ensure the installation between the discharge pipe 162 and the guide pipe 1312 .

[0217] In some embodiments, the third base 167 is welded to the discharge body 166 , and the third mounting portion 1671 is connected to the fourth mounting portion 1371 via a second fastener 180 .

[0218] For example, the second fastener 180 may be a bolt.

[0219] In some embodiments, the third circulation portion 1672 extends into the fourth circulation portion 1372. Since both are made of aluminum, a sealing ring can be added during assembly to ensure the sealing of fluid flow.

[0220] The battery box provided in the embodiment of the present application includes a box body with a accommodating cavity; a battery module is located in the accommodating cavity, the battery module includes a first battery cell unit and a second battery cell unit, the first battery cell unit includes a plurality of first battery cells, and the plurality of first battery cells are arranged at intervals along the first direction; the second battery cell unit includes a plurality of second battery cells, and the plurality of second battery cells are arranged at intervals along the first direction; a temperature control component includes a direct cooling plate, the direct cooling plate is provided in the box body, and is connected to the refrigeration system of the electric vehicle; along the second direction, the direct cooling plate is located between the end of the adjacent first battery cell and the end of the second battery cell, and the direct cooling plate has a channel for the flow of refrigerant to exchange heat between the first battery cell and the second battery cell; wherein, there is an angle between the first direction and the second direction.

[0221] By sandwiching the direct cooling plate between the first battery cell and the second battery cell, it can cool the first battery cell and the second battery cell at the same time, thereby improving the cooling efficiency, ensuring that the battery maintains a suitable temperature during operation, and extending the service life of the battery. Since the direct cooling plate can cool the first battery cell and the second battery cell on both sides at the same time, the number of required direct cooling plates is reduced, thereby reducing material costs and manufacturing complexity. In addition, by directly connecting the direct cooling plate to the refrigeration system of the electric vehicle, the existing air-conditioning refrigeration system of the electric vehicle is directly utilized without the need for additional cooling equipment, eliminating the additional equipment required in traditional liquid cooling solutions, further reducing costs, reducing the weight of the entire vehicle, and also reducing the energy consumption of the entire vehicle.

[0222] In addition, an embodiment of the present application further provides an electric vehicle 200 , including a battery box 100 .

[0223] It should be noted that the specific structure of the battery box 100 is not limited here and reference may be made to the above.

[0224] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present application.

[0225] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0226] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned implementation modes, ordinary technicians in this field should understand that they can still modify the technical solutions described in the aforementioned implementation modes, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation modes of the present application.

Claims

1. A battery box (100) provided in an electric vehicle, characterized in that: The battery box (100) comprises: A box body (110) having a receiving cavity; A battery module (120) is located in the accommodating cavity, the battery module (120) comprising a first battery cell unit (121) and a second battery cell unit (122), the first battery cell unit (121) comprising a plurality of first battery cells (1211), the plurality of first battery cells (1211) being spaced apart along a first direction; The second battery cell unit (122) comprises a plurality of second battery cells (1221), and the plurality of second battery cells (1221) are arranged at intervals along the first direction; A temperature adjustment component (130) includes a direct cooling plate (131), wherein the direct cooling plate (131) is provided on the box (110) and is connected to the refrigeration system of the electric vehicle; Along the second direction, the direct cooling plate (131) is located between the end of the adjacent first battery core (1211) and the end of the second battery core (1221), and a channel for the flow of refrigerant is provided in the direct cooling plate (131) to exchange heat between the first battery core (1211) and the second battery core (1221); Wherein, there is an angle between the first direction and the second direction.

2. The battery box (100) according to claim 1, characterized in that The temperature adjustment component (130) further includes at least two heating elements (132). Along the second direction, at least two of the heating elements (132) are respectively attached to opposite sides of the direct cooling plate (131).

3. The battery box (100) according to claim 2, characterized in that: The heating element (132) is a heating film; The temperature adjustment component (130) further includes a power connection terminal (133), which is provided at the end of the heating element (132), and is configured to be connected to a power supply of the battery box (100).

4. The battery box (100) according to claim 3, characterized in that: The battery box (100) further includes at least two thermally conductive structural adhesives (140); One of at least two of the heat-conducting structural adhesives (140) is disposed between one of the at least two heating elements (132) and the first battery core (1211); The other of the at least two thermally conductive structural adhesives (140) is disposed between the other of the two heating elements (132) and the second battery core (1221).

5. The battery box (100) according to claim 4, characterized in that: The battery box (100) further includes a rubber strip (150), wherein the rubber strip (150) is provided on a side of the heat-conducting structural adhesive (140) facing away from the direct cooling plate (131), and the rubber strip (150) extends along the first direction.

6. The battery box (100) according to any one of claims 1 to 5, characterized in that: The battery box (100) further includes a pipeline assembly (160), the pipeline assembly (160) being arranged on the box body (110), the pipeline assembly (160) including a feed pipe (161) and a discharge pipe (162) that are interconnected; The feed pipe (161) is connected to the discharge end of the refrigeration system of the electric vehicle and the feed port of the direct cooling plate (131); The discharge pipe (162) is connected to the feed end of the refrigeration system of the electric vehicle and the discharge port of the direct cooling plate (131).

7. The battery box (100) according to claim 6, characterized in that: The direct cooling plate (131) comprises a direct cooling body (1311) and a material guide pipe (1312) that are interconnected, the direct cooling body (1311) extends along the first direction, and the material guide pipe (1312) is provided in the box (110) and is located at an end of the direct cooling body (1311); The temperature adjustment component (130) further includes a separator (134), wherein the separator (134) is disposed in the material guide tube (1312) to separate the material guide tube (1312) into a feed channel and a discharge channel along a third direction; The feed channel is connected to the feed pipe (161), and the discharge channel is connected to the discharge pipe (162); Wherein, the third direction, the first direction and the second direction all have an included angle therebetween.

8. The battery box (100) according to claim 7, characterized in that: The feed pipe (161) includes a feed body (165) and a first base (164), wherein the feed body (165) is connected to the discharge end of the refrigeration system of the electric vehicle, and the first base (164) is provided on the feed body (165). The first base (164) has a first mounting portion (1641) and a first circulation portion (1642), and the first circulation portion (1642) is connected to the feed body (165); The material guide tube (1312) is provided with a second base (136), the second base (136) has a second mounting portion (1361) and a second circulation portion (1362), and the second circulation portion (1362) is connected to the feed channel; The first mounting portion (1641) is connected to the second mounting portion (1361), and the first circulation portion (1642) is communicated with the second circulation portion (1362).

9. The battery box (100) according to claim 7, characterized in that: The discharge pipe (162) includes a discharge body (166) and a third base (167), wherein the discharge body (166) is connected to the feed end of the refrigeration system of the electric vehicle, and the third base (167) is provided on the discharge body (166), wherein the third base (167) has a third mounting portion (1671) and a third circulation portion (1672), and the third circulation portion (1672) is connected to the discharge body (166); The material guide tube (1312) is further provided with a fourth base (137), the fourth base (137) having a fourth mounting portion (1371) and a fourth circulation portion (1372), the fourth circulation portion (1372) being in communication with the material discharge channel; The third mounting portion (1671) is connected to the fourth mounting portion (1371), and the third circulation portion (1672) is communicated with the fourth circulation portion (1372).

10. An electric vehicle, characterized in that: A battery box (100) comprising any one of claims 1 to 9.

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