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CN-224232792-U - CTB battery box and electric automobile

CN224232792UCN 224232792 UCN224232792 UCN 224232792UCN-224232792-U

Abstract

The application provides a CTB battery box and an electric automobile. The CTB battery box comprises a box body, a battery module, a box cover and a box cover, wherein the box body comprises a box cover, a frame and a bottom guard plate, the box cover is provided with a liquid cooling flow channel for cooling liquid to flow, the box cover and the bottom guard plate are respectively positioned on two opposite sides of the frame to form a containing cavity, the battery module is positioned in the containing cavity, the box cover is used for carrying out heat exchange on the battery module, a sealing beam is arranged on the frame, is positioned on one side of the frame, which is far away from the bottom guard plate, extends towards the direction facing the box cover, and the box cover is arranged on the sealing beam. The application can reduce the risk of deformation and has higher strength.

Inventors

  • LIANG XINLONG
  • LI XIN
  • ZHOU QINGFENG
  • YU CHANGHAI
  • LV XIXIANG

Assignees

  • 合肥国轩高科动力能源有限公司

Dates

Publication Date
20260512
Application Date
20250410

Claims (10)

  1. 1. A CTB battery case (100), characterized by comprising: The box body (110) comprises a box cover (111), a frame (112) and a bottom guard plate (113), wherein the box cover (111) is provided with a liquid cooling flow channel for cooling liquid to flow, and the box cover (111) and the bottom guard plate (113) are respectively positioned on two opposite sides of the frame (112) so as to form a containing cavity; The battery module is positioned in the accommodating cavity, and the box cover (111) is used for exchanging heat with the battery module; The sealing beam (120) is arranged on the frame (112), the sealing beam (120) is located on one side of the frame (112) away from the bottom guard plate (113) and extends towards the direction facing the box cover (111), and the box cover (111) is arranged on the sealing beam (120).
  2. 2. The CTB battery case (100) according to claim 1, wherein the case cover (111) is one of a stamped liquid cooling plate and a profile liquid cooling plate.
  3. 3. The CTB battery case (100) according to claim 1, wherein the case cover (111) is a flat plate type structural member.
  4. 4. The CTB battery case (100) according to any of claims 1-3, wherein the CTB battery case (100) further comprises a connector (130); The sealing beam (120) is of a hollow structure, a first mounting hole (1111) is formed in the box cover (111), a second mounting hole (125) is formed in the sealing beam (120), and the connecting piece (130) penetrates through the first mounting hole (1111) and the second mounting hole (125) so that the box cover (111) is connected with the sealing beam (120).
  5. 5. The CTB battery case (100) according to claim 4, wherein the first mounting holes (1111) are plural, and the plural first mounting holes (1111) are provided at intervals to the case cover (111); the distance between two adjacent first mounting holes (1111) is 30mm-50 mm.
  6. 6. A CTB battery box (100) according to any of claims 1-3, wherein the sealing beam (120) further comprises a front sealing beam (121), a left sealing beam (122), a right sealing beam (123) and a rear sealing beam (124), the front sealing beam (121), the left sealing beam (122), the right sealing beam (123) and the rear sealing beam (124) being connected in sequence so as to enclose the edge of the frame (112).
  7. 7. A CTB battery case (100) according to any of claims 1-3, wherein the CTB battery case (100) further comprises a heat conductive glue between the case cover (111) and the battery module, the heat conductive glue being for transferring heat of the battery module to the case cover (111).
  8. 8. A CTB battery case (100) according to any of claims 1-3, wherein the CTB battery case (100) further comprises a base plate (140), the base plate (140) being provided to the frame (112) to support the battery module, the base plate (140) being located between the frame (112) and the bottom guard (113).
  9. 9. The CTB battery case (100) according to claim 8, wherein the CTB battery case (100) further comprises a buffer (150), the buffer (150) being located between the base plate (140) and the bottom guard plate (113).
  10. 10. An electric vehicle characterized by comprising the CTB battery box (100) according to any one of claims 1 to 9.

Description

CTB battery box and electric automobile Technical Field The application relates to a CTB battery box and an electric automobile, and belongs to the technical field of new energy batteries. Background As the integration of electric vehicles increases, and at the same time, the space and comfort of the passenger compartment in the vehicle increases, CTB schemes, i.e., battery-to-body integration schemes, are increasingly being used. In the process of designing and realizing the application, the applicant finds that at least the following problems exist that at present, when a box cover in a CTB battery box is connected with a frame, the box cover is buckled on the frame by adopting a flanging structure, so that the whole box cover is easy to deform under multiple treads. The foregoing description is provided for general background information and does not necessarily constitute prior art. Disclosure of utility model The application provides a CTB battery box and an electric automobile, which can reduce the risk of deformation and have higher strength. The present application provides a CTB battery case comprising: The box body comprises a box cover, a frame and a bottom guard plate, wherein the box cover is provided with a liquid cooling flow channel for cooling liquid to flow, and the box cover and the bottom guard plate are respectively positioned at two opposite sides of the frame so as to form a containing cavity; The battery module is positioned in the accommodating cavity, and the case cover is used for exchanging heat with the battery module; The frame is provided with a sealing beam, the sealing beam is positioned on one side of the frame, which is away from the bottom guard plate, and extends towards the direction facing the box cover, and the box cover is arranged on the sealing beam. The box cover has the beneficial effects that through the arrangement of the sealing beam, the box cover is directly arranged on the sealing beam, so that the box cover is hermetically arranged on the frame, and compared with the box cover in some embodiments, the box cover has the advantages that the flanging structure is reduced, the risk of deformation can be reduced, and the strength is higher; in addition, the case cover is internally provided with a liquid cooling runner, so that heat exchange can be performed on the battery module, and the heat exchange effect is good. In some alternative embodiments, the cover is one of a stamped liquid cooled panel and a profile liquid cooled panel. It should be noted that, compared with the traditional air cooling system, the heat in the equipment can be managed more effectively. In some alternative embodiments, the cover is a flat structural member. It should be noted that the design of the flat plate structure reduces the flanging structure, thereby reducing the possibility of deformation when external force (such as supporting bottom) is applied. This design can enhance the overall rigidity and stability of the structure. In some alternative embodiments, the CTB battery case further comprises a connector; The sealing beam is of a hollow structure, a first mounting hole is formed in the box cover, a second mounting hole is formed in the sealing beam, and the connecting piece penetrates through the first mounting hole and the second mounting hole so that the box cover is connected with the sealing beam. It should be noted that, through setting up first mounting hole and second mounting hole respectively on case lid and sealing beam to use the connecting piece to connect, simplified the installation, reduced assembly time and complexity. The connecting piece tightly combines the box cover and the sealing beam together through the mounting hole to form a whole, so that the overall strength and rigidity of the structure are enhanced. In some alternative embodiments, the first mounting holes are multiple, and the first mounting holes are arranged on the case cover at intervals; The distance between two adjacent first mounting holes is 30mm-50 mm. The box cover deformation caused by trampling can be effectively reduced by the arrangement, the load of the connecting piece can be uniformly distributed between the box cover and the sealing beam by the design of the plurality of mounting holes, the local stress concentration is reduced, and the stability and the durability of the whole structure are enhanced. In some alternative embodiments, the sealing beams further comprise a front sealing beam, a left sealing beam, a right sealing beam and a rear sealing beam, which are connected in sequence to enclose the edges of the frame. It should be noted that the surrounding design enhances the overall structural integrity and rigidity of the frame, is better resistant to external mechanical stresses and impacts, and effectively prevents external environmental factors (e.g., water, dust, gas, etc.) from entering the interior of the frame, providing overall sealing protection. In some altern