CTB battery box and electric automobile

Abstract

The utility model provides a CTB battery box and an electric vehicle. The CTB battery box comprises a box body, the box body comprises a box cover, a frame and a bottom protection plate, the box cover is provided with a liquid cooling flow channel allowing cooling liquid to flow, and the box cover and the bottom protection plate are located on the two opposite sides of the frame respectively to form a containing cavity; the battery module is located in the containing cavity, and the box cover is used for conducting heat exchange on the battery module; the frame is provided with a sealing beam, the sealing beam is located on the side, away from the bottom protection plate, of the frame and extends in the direction facing the box cover, and the box cover is arranged on the sealing beam. The deformation risk can be reduced, and the strength is high.

Description

Technical Field

[0001] This application relates to a CTB battery box and an electric vehicle, belonging to the field of new energy battery technology. Background Technology

[0002] As electric vehicles become increasingly integrated, and to increase the space and comfort of the passenger compartment, the CTB (Battery to Body) solution is being used more and more.

[0003] In the process of conceiving and implementing this application, the applicant discovered at least the following problems: Currently, when the cover of the CTB battery box is connected to the frame, the cover is fastened to the frame with a flange structure, which makes the entire cover prone to deformation after repeated stepping.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] This application provides a CTB battery box and an electric vehicle that can reduce the risk of deformation and has high strength.

[0006] This application provides a CTB battery box, including:

[0007] The enclosure includes a cover, a frame, and a bottom plate. The cover has liquid cooling channels for coolant flow. The cover and the bottom plate are located on opposite sides of the frame to form a receiving cavity.

[0008] The battery module is located inside the housing cavity, and the cover is used for heat exchange of the battery module.

[0009] The frame is equipped with a sealing beam, which is located on the side of the frame away from the bottom protective plate and extends towards the box cover, which is located on the sealing beam.

[0010] The beneficial effects of this application are: by setting the sealing beam, the box cover can be directly installed on the sealing beam, thereby achieving a sealed installation on the frame. Compared with some embodiments, the box cover in this application reduces the flange structure, which can reduce the risk of deformation and has higher strength; in addition, the box cover has a liquid cooling channel, which can exchange heat with the battery module and has a good heat exchange effect.

[0011] In some alternative implementations, the cover is either a stamped liquid-cooled plate or a profile liquid-cooled plate.

[0012] It should be noted that, compared to traditional air-cooling systems, it can manage the heat inside the equipment more effectively.

[0013] In some alternative implementations, the lid is a flat panel structure.

[0014] It should be noted that the flat-plate structural design reduces the number of flanges, thereby decreasing the likelihood of deformation under external forces (such as bottom support). This design enhances the overall rigidity and stability of the structure.

[0015] In some alternative implementations, the CTB battery box also includes connectors;

[0016] The sealing beam is a hollow structure. A first mounting hole is opened on the box cover, and a second mounting hole is opened on the sealing beam. The connector passes through the first mounting hole and the second mounting hole to connect the box cover and the sealing beam.

[0017] It should be noted that by providing a first mounting hole and a second mounting hole on the cover and sealing beam respectively, and using connectors for connection, the installation process is simplified, reducing assembly time and complexity. The connectors tightly bind the cover and sealing beam together through the mounting holes, forming a unified whole, thus enhancing the overall strength and rigidity of the structure.

[0018] In some optional embodiments, there are multiple first mounting holes, which are spaced apart on the cover.

[0019] The distance between two adjacent first mounting holes is between 30mm and 50mm.

[0020] It should be noted that this design can effectively reduce the deformation of the box cover caused by stepping on it. The design of multiple mounting holes can evenly distribute the load between the box cover and the sealing beam, reduce local stress concentration, and enhance the stability and durability of the overall structure.

[0021] In some alternative embodiments, the sealing beam further includes a front sealing beam, a left sealing beam, a right sealing beam, and a rear sealing beam, which are connected in sequence to surround the edge of the frame.

[0022] It should be noted that this wraparound design enhances the overall structural integrity and rigidity of the frame, better resisting external mechanical stress and impact, and effectively preventing external environmental factors (such as water, dust, gas, etc.) from entering the frame, providing comprehensive sealing protection.

[0023] In some alternative implementations, the CTB battery box also includes thermally conductive adhesive located between the box cover and the battery module, which is used to transfer heat from the battery module to the box cover.

[0024] It should be noted that the thermally conductive adhesive has excellent thermal conductivity, which can effectively transfer the heat generated by the battery module to the casing cover, thereby achieving rapid heat dissipation and preventing the battery from overheating. The uniform distribution of the thermally conductive adhesive helps maintain the temperature uniformity of the battery module, reduces localized overheating, and improves the overall performance and lifespan of the battery.

[0025] In some alternative implementations, the CTB battery box also includes a base plate disposed on the frame to support the battery module, the base plate being located between the frame and the bottom protective plate.

[0026] It should be noted that the base plate provides a stable support platform for the battery module, ensuring that the battery module remains stable during vehicle operation and reducing vibration and displacement.

[0027] In some alternative implementations, the CTB battery box also includes a buffer located between the base plate and the bottom cover plate.

[0028] It should be noted that the buffer can effectively absorb and reduce the impact and vibration from the road surface, protect the bottom plate and battery module, reduce the impact on the bottom plate from being directly transmitted to the battery module, reduce the risk of damage caused by uneven road surface or bottoming out, and extend the service life of the battery and vehicle.

[0029] In addition, this application also provides an electric vehicle including the aforementioned CTB battery box.

[0030] The CTB battery box and electric vehicle provided in this application include a CTB battery box. The CTB battery box includes: a box body, including a box cover, a frame, and a bottom guard plate. The box cover has a liquid cooling channel for coolant flow. The box cover and the bottom guard plate are located on opposite sides of the frame to form a receiving cavity. A battery module is located in the receiving cavity. The box cover is used for heat exchange of the battery module. A sealing beam is provided on the frame. The sealing beam is located on the side of the frame away from the bottom guard plate and extends in the direction facing the box cover. The box cover is located on the sealing beam.

[0031] By setting a sealing beam, the cover can be directly installed on the sealing beam, thereby achieving a sealed installation on the frame. Compared with some embodiments, the cover in this application reduces the flange structure, which can reduce the risk of deformation and has higher strength. In addition, the cover has a liquid cooling channel, which can exchange heat with the battery module and has a good heat exchange effect. Attached Figure Description

[0032] The above and other objects, features, and advantages of embodiments of this application will become more readily understood through the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application will be described by way of example and non-limitation, wherein:

[0033] Figure 1 This is a schematic diagram of the CTB battery box according to an embodiment of this application;

[0034] Figure 2 This is an exploded view of the CTB battery box according to an embodiment of this application;

[0035] Figure 3This is a schematic diagram of the structure of the cover of the CTB battery box according to an embodiment of this application;

[0036] Figure 4 This is a schematic diagram of the frame structure in the CTB battery box according to an embodiment of this application;

[0037] Figure 5 This is a cross-sectional view of the frame and the left or right sealing beam assembled in the CTB battery box according to an embodiment of this application.

[0038] Figure 6 This is a cross-sectional view of the assembly of the frame and the front sealing beam in the CTB battery box according to an embodiment of this application.

[0039] Figure 7 This is a cross-sectional view of the frame and rear sealing beam assembly in the CTB battery box according to an embodiment of this application.

[0040] Figure label:

[0041] 100-CTB battery box;

[0042] 110 - Enclosure;

[0043] 111 - Box lid;

[0044] 1111 - First mounting hole;

[0045] 112-Frame;

[0046] 113 - Bottom guard plate;

[0047] 120 - Sealing beam;

[0048] 121 - Front sealing beam;

[0049] 122 - Left sealing beam;

[0050] 123 - Right sealing beam;

[0051] 124 - Rear sealing beam;

[0052] 125 - Second mounting hole;

[0053] 130 - Connector;

[0054] 140 - Base Plate;

[0055] 150-Buffer. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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, 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. All other obtained embodiments are within the scope of protection of this application. In the absence of conflict, the following embodiments and features can be combined with each other.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] In the process of conceiving and implementing this application, the applicant discovered at least the following problems: Currently, when the cover of the CTB battery box is connected to the frame, the cover is fastened to the frame with a flange structure, which makes the entire cover prone to deformation after repeated stepping.

[0061] The CTB battery box proposed in this application, through the setting of the sealing beam, allows the box cover to be directly installed on the sealing beam, thereby achieving a sealed installation on the frame. Compared with some embodiments, the box cover in this application reduces the flange structure, which can reduce the risk of deformation and has higher strength. In addition, the box cover has a liquid cooling channel inside, which can exchange heat for the battery module and has a good heat exchange effect.

[0062] The CTB battery box provided in this application will be described in detail below with reference to specific embodiments.

[0063] Figure 1 This is a schematic diagram of the CTB battery box according to an embodiment of this application. Figure 2 This is an exploded view of the CTB battery box according to an embodiment of this application.

[0064] like Figure 1 and Figure 2 As shown in the figure, this application provides a CTB battery box 100, comprising:

[0065] The housing 110 includes a cover 111, a frame 112, and a bottom guard plate 113. The cover 111 has a liquid cooling channel for coolant flow. The cover 111 and the bottom guard plate 113 are located on opposite sides of the frame 112 to form a receiving cavity.

[0066] The battery module is located inside the housing cavity, and the cover 111 is used for heat exchange of the battery module.

[0067] A sealing beam 120 is provided on the frame 112. The sealing beam 120 is located on the side of the frame 112 away from the bottom guard plate 113 and extends in the direction facing the box cover 111. The box cover 111 is located on the sealing beam 120.

[0068] It should be noted that the cover 111 provides an effective heat dissipation path for the battery module through a liquid cooling channel. The coolant flows in the channel, carrying away the heat generated by the battery module, thereby keeping the battery's operating temperature within a safe range and improving battery performance and lifespan.

[0069] In one possible implementation, the housing 110 can be a rectangular structure, and the size of the housing 110 can be greater than or equal to the size of the battery module, so that the housing 110 can support the battery module.

[0070] It is understandable that the purpose of the cavity is to house the battery module. It is also easy to understand that the cavity is sealed to prevent side reactions from occurring within the battery cells, which could affect the cell performance.

[0071] For example, the size or shape of the receiving cavity is matched with the size and shape of the battery module. Specifically, it can be adjusted according to the actual situation. This application embodiment does not impose too many restrictions here.

[0072] In this embodiment, the battery module can be configured as a rectangular structure. The battery module can be located inside the housing 110.

[0073] Understandably, housing 110 can be used to support the battery module.

[0074] The dimensions of the aforementioned housing 110 can be set according to actual needs, and this embodiment of the application does not impose any restrictions on them.

[0075] In addition, it should be noted that the shape of the box 110 is not limited in this embodiment. For example, the box 110 can be a regular shape such as a cuboid or a cylinder. Of course, the box 110 can also be other irregular shapes.

[0076] It should be noted that a sealing beam 120 is provided on the frame 112. The sealing beam 120 protrudes from the frame 112, and the box cover 111 is installed on the frame 112 through the sealing beam 120, which has a good sealing effect.

[0077] With the above-mentioned configuration, namely, the sealing beam 120, the cover 111 is directly installed on the sealing beam 120, thereby achieving a sealed installation on the frame 112. Compared with some embodiments, the cover 111 in this application reduces the flange structure, which can reduce the risk of deformation and has higher strength. In addition, the cover 111 has a liquid cooling channel inside, which can exchange heat for the battery module and has a good heat exchange effect.

[0078] Figure 3 This is a schematic diagram of the structure of the cover of the CTB battery box according to an embodiment of this application.

[0079] like Figure 3 As shown, in some alternative embodiments, the cover 111 is one of a stamped liquid-cooled plate and a profile liquid-cooled plate.

[0080] It should be noted that, compared to traditional air-cooling systems, it can manage the heat inside the equipment more effectively.

[0081] Furthermore, stamped liquid cooling plates and profile liquid cooling plates are usually made of metal materials, providing good structural strength and being able to withstand external pressure and mechanical stress.

[0082] Stamping processes and profile design can optimize material usage and reduce unnecessary weight, thereby improving equipment portability and ease of installation. Stamping is typically suitable for mass production, reducing unit costs. Meanwhile, profile liquid cooling plates can achieve complex internal channel designs through processes such as extrusion molding, making them suitable for customized needs.

[0083] In some embodiments, the cover 111 can be a stamped liquid cooling plate, which is spliced ​​by brazing aluminum plates. In order to achieve lightweighting, the upper and lower plates are made of thinner materials, while having more efficient thermal management performance. In addition, the water nozzle is external, which is convenient for installation and also reduces the configuration of joints and hoses inside the box.

[0084] In some embodiments, the cover 111 can be a profile liquid-cooled plate. The structural design of the profile liquid-cooled plate can provide additional mechanical strength and rigidity, enhance the structural stability of the entire battery box, and reduce deformation or damage caused by vibration or impact.

[0085] Specifically, the cover 111 contains the cavity required for the liquid cooling plate flow channel. The side is integrally extruded to form the frame structure, that is, the left side is integrally extruded to form the left frame and the right side is integrally extruded to form the right frame. The bottom material of the side structure is thicker, which ensures the strength of the frame structure. At the same time, the integral extrusion structure improves the overall strength and modality, reduces the cost of manual welding, and reduces the amount of welding deformation.

[0086] It should be noted that this case uses the example of the box cover 111 being a stamped liquid cooling plate for illustration.

[0087] like Figures 1 to 3 As shown, in some alternative embodiments, the box cover 111 is a flat panel structure.

[0088] It should be noted that the flat-plate structural design reduces the number of flanges, thereby decreasing the likelihood of deformation under external forces (such as bottom support). This design enhances the overall rigidity and stability of the structure.

[0089] By reducing deformation, the cold plate can maintain its designed geometry and flow channel layout, thereby ensuring unimpeded flow of liquid coolant and maintaining efficient heat conduction and heat dissipation performance.

[0090] Flat-plate structural components are generally simpler. Reducing the flanging process can simplify the manufacturing process, lower production costs, and improve production efficiency. By optimizing the structural design and reducing unnecessary flanging, the weight of the components can be effectively reduced, which is especially important for applications such as electric vehicles where energy efficiency is a key consideration.

[0091] like Figures 1 to 3 As shown, in some alternative embodiments, the CTB battery box 100 also includes a connector 130;

[0092] The sealing beam 120 is a hollow structure. The box cover 111 has a first mounting hole 1111 and the sealing beam 120 has a second mounting hole 125. The connector 130 passes through the first mounting hole 1111 and the second mounting hole 125 to connect the box cover 111 and the sealing beam 120.

[0093] It should be noted that by providing a first mounting hole 1111 and a second mounting hole 125 on the cover 111 and the sealing beam 120 respectively, and connecting them with a connector 130, the installation process is simplified, and assembly time and complexity are reduced. The connector 130 tightly joins the cover 111 and the sealing beam 120 together through the mounting holes to form a whole, enhancing the overall strength and rigidity of the structure.

[0094] The hollow-structured sealing beam 120 significantly reduces weight while maintaining the necessary strength, which is crucial for applications where overall weight is a consideration, such as electric vehicles.

[0095] It should be noted that, in this embodiment of the application, considering the cost of the connector 130, the connector 130 can be a threaded fastener. Correspondingly, a first mounting hole 1111 is provided on the cover 111. The first mounting hole 1111 can be a threaded hole. The connector 130 can pass through the first mounting hole 1111 and can be adjusted for fixed and disassembled by tightening or loosening.

[0096] In addition, a second mounting hole 125 is provided on the sealing beam 120. The second mounting hole 125 can also be a threaded hole. The connector 130 can pass through the first mounting hole 1111 and can be adjusted for fixed and disassembled by tightening or loosening.

[0097] Specifically, the connector 130 passes through the first mounting hole 1111 and the second mounting hole 125 in sequence and is tightened, thereby fixing the cover 111 to the sealing beam 120. Of course, when it is necessary to remove the cover 111, simply loosen the connector 130 and then remove the connector 130 from the second mounting hole 125 and the first mounting hole 1111 in sequence.

[0098] like Figures 1 to 3 As shown, in some optional embodiments, there are multiple first mounting holes 1111, and the multiple first mounting holes 1111 are spaced apart on the cover 111.

[0099] The distance between two adjacent first mounting holes 1111 is between 30mm and 50mm.

[0100] It should be noted that this design can effectively reduce the deformation of the box cover 111 caused by stepping. The design of multiple mounting holes can make the connector 130 evenly distribute the load between the box cover 111 and the sealing beam 120, reduce local stress concentration, and enhance the stability and durability of the overall structure.

[0101] In addition, by using a reasonable spacing A (30mm-50mm), it can be ensured that the connector 130 provides sufficient support and fixing force throughout the structure to prevent loosening or displacement.

[0102] The tight connection of multiple mounting holes ensures a seal between the sealing beam 120 and the cover 111, preventing the external environment from affecting the internal components. Appropriate mounting hole spacing helps control vibration transmission, reduces structural fatigue and noise caused by vibration, and improves system reliability and comfort.

[0103] In some embodiments, the flow channel design of the lid 111 should avoid areas that are frequently stepped on.

[0104] In some embodiments, the distance A between two adjacent first mounting holes 1111 can be 30mm, 32mm, 34mm, 36mm, 38mm, 40mm, 42mm, 44mm, 46mm, 48mm, 50mm or any one of them.

[0105] Figure 4 This is a schematic diagram of the frame structure in the CTB battery box according to an embodiment of this application. Figure 5 This is a cross-sectional view of the frame and the left or right sealing beam assembled in the CTB battery box according to an embodiment of this application. Figure 6 This is a cross-sectional view of the assembly of the frame and the front sealing beam in the CTB battery box according to an embodiment of this application. Figure 7 This is a cross-sectional view of the frame and rear sealing beam assembly in the CTB battery box according to an embodiment of this application.

[0106] like Figures 1 to 7 As shown, in some optional embodiments, the sealing beam 120 further includes a front sealing beam 121, a left sealing beam 122, a right sealing beam 123, and a rear sealing beam 124, which are connected in sequence to surround the edge of the frame 112.

[0107] It should be noted that this wraparound design enhances the overall structural integrity and rigidity of the frame 112, enabling it to better resist external mechanical stress and impact. It can effectively prevent external environmental factors (such as water, dust, gas, etc.) from entering the interior of the frame 112, providing comprehensive sealing protection.

[0108] By arranging the sealing beams 120 around the edge of the frame 112, the load can be distributed more evenly, local stress concentration can be reduced, and the durability of the structure can be improved.

[0109] In some alternative embodiments, the CTB battery box 100 also includes thermally conductive adhesive located between the box cover 111 and the battery module, the thermally conductive adhesive being used to transfer heat from the battery module to the box cover 111.

[0110] It should be noted that the thermally conductive adhesive has excellent thermal conductivity, which can effectively transfer the heat generated by the battery module to the cover 111, thereby achieving rapid heat dissipation and preventing the battery from overheating. The uniform distribution of the thermally conductive adhesive helps maintain the temperature uniformity of the battery module, reduces localized overheating, and improves the overall performance and lifespan of the battery.

[0111] Understandably, effective thermal management can reduce the thermal stress on battery modules, reduce battery performance degradation or failures caused by overheating, and thus improve the reliability and safety of the system.

[0112] In addition to its thermal conductivity, thermally conductive adhesive also provides shock absorption and cushioning, protecting the battery module from vibration and impact. It can fill gaps between irregular surfaces, ensuring good contact and thermal conduction, and works effectively even in complex geometries.

[0113] like Figures 1 to 3 As shown, in some alternative embodiments, the CTB battery box 100 further includes a base plate 140 disposed on the frame 112 to support the battery module, and the base plate 140 is located between the frame 112 and the bottom protective plate 113.

[0114] It should be noted that the base plate 140 provides a stable support platform for the battery module, ensuring that the battery module remains stable during vehicle operation and reducing vibration and displacement.

[0115] In some embodiments, the base plate 140 is first installed on the frame 112, and the battery module is then placed into the box. The base plate 140 provides support for the battery module. Considering the strength of the base plate 140, a bottom protective plate 113 is added to the outside to further provide strength and prevent external damage to the box 110.

[0116] Specifically, the base plate 140 is located between the frame 112 and the bottom guard plate 113, forming a protective layer that can effectively absorb and disperse the impact and vibration from the road surface, reducing the direct impact on the battery module.

[0117] The presence of the base plate 140 can serve as an additional protective layer, enhancing the overall safety of the battery box. In particular, it can provide an additional physical barrier to protect the battery modules from damage in the event of a collision or bottoming out.

[0118] The addition of the base plate 140 can increase the structural rigidity of the entire battery box, improve torsional and bending resistance, and enhance the overall dynamic performance of the vehicle.

[0119] like Figures 1 to 3 As shown, in some alternative embodiments, the CTB battery box 100 further includes a buffer 150 located between the base plate 140 and the bottom guard plate 113.

[0120] It should be noted that the buffer 150 can effectively absorb and reduce the impact and vibration from the road surface, protect the bottom plate 140 and the battery module, reduce the impact on the bottom guard plate 113 from being directly transmitted to the battery module, reduce the risk of damage caused by uneven road surface or bottoming out, and extend the service life of the battery and the vehicle.

[0121] Specifically, in the event of a collision, the buffer 150 can act as an additional energy absorption layer, reducing the direct impact of the impact on the battery module and improving the overall vehicle safety.

[0122] In some embodiments, the buffer 150 may be made of a variety of materials, such as rubber, foam, polymer, etc., and the appropriate material may be selected as needed to achieve the best performance and cost balance.

[0123] In some embodiments, the cushioning element 150 may be cushioning foam.

[0124] The CTB battery box provided in this application embodiment includes a box body, including a box cover, a frame, and a bottom protective plate. The box cover has a liquid cooling channel for coolant flow. The box cover and the bottom protective plate are located on opposite sides of the frame to form a receiving cavity. A battery module is located in the receiving cavity, and the box cover is used for heat exchange of the battery module. A sealing beam is provided on the frame. The sealing beam is located on the side of the frame away from the bottom protective plate and extends in the direction facing the box cover. The box cover is located on the sealing beam.

[0125] By setting a sealing beam, the cover can be directly installed on the sealing beam, thereby achieving a sealed installation on the frame. Compared with some embodiments, the cover in this application reduces the flange structure, which can reduce the risk of deformation and has higher strength. In addition, the cover has a liquid cooling channel, which can exchange heat with the battery module and has a good heat exchange effect.

[0126] In addition, this application embodiment also provides a CTB battery box 100 including the above-described embodiment.

[0127] It should be noted that the specific structure of the CTB battery box 100 will not be specified here; please refer to the above.

[0128] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0129] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0130] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A CTB battery box (100), characterized in that, include: The housing (110) includes a cover (111), a frame (112), and a bottom guard plate (113). The cover (111) has a liquid cooling channel for coolant flow. The cover (111) and the bottom guard plate (113) are located on opposite sides of the frame (112) to form a receiving cavity. The battery module is located in the receiving cavity, and the cover (111) is used to exchange heat for the battery module; The frame (112) is provided with a sealing beam (120), which is located on the side of the frame (112) away from the bottom guard plate (113) and extends toward the box cover (111), which is located on the sealing beam (120).

2. The CTB battery box (100) according to claim 1, characterized in that, The cover (111) is either a stamped liquid-cooled plate or a profile liquid-cooled plate.

3. The CTB battery box (100) according to claim 1, characterized in that, The box cover (111) is a flat plate structure.

4. The CTB battery box (100) according to any one of claims 1-3, characterized in that, The CTB battery box (100) also includes a connector (130); The sealing beam (120) is a hollow structure. The box cover (111) has a first mounting hole (1111) and the sealing beam (120) has a second mounting hole (125). The connector (130) passes through the first mounting hole (1111) and the second mounting hole (125) to connect the box cover (111) and the sealing beam (120).

5. The CTB battery box (100) according to claim 4, characterized in that, There are multiple first mounting holes (1111), and the multiple first mounting holes (1111) are spaced apart on the box cover (111); The distance between two adjacent first mounting holes (1111) is between 30mm and 50mm.

6. The CTB battery box (100) according to any one of claims 1-3, characterized in that, The sealing beam (120) also includes a front sealing beam (121), a left sealing beam (122), a right sealing beam (123), and a rear sealing beam (124), which are connected in sequence to surround the edge of the frame (112).

7. The CTB battery box (100) according to any one of claims 1-3, characterized in that, The CTB battery box (100) also includes thermally conductive adhesive located between the box cover (111) and the battery module, the thermally conductive adhesive being used to transfer heat from the battery module to the box cover (111).

8. The CTB battery box (100) according to any one of claims 1-3, characterized in that, The CTB battery box (100) also includes a base plate (140), which is disposed on the frame (112) to support the battery module. The base plate (140) is located between the frame (112) and the bottom protective plate (113).

9. The CTB battery box (100) according to claim 8, characterized in that, The CTB battery box (100) also includes a buffer (150) located between the base plate (140) and the bottom protective plate (113).

10. An electric vehicle, characterized in that, Includes the CTB battery box (100) as described in any one of claims 1 to 9.

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