Double-layer battery replacement battery pack

Abstract

The invention discloses a double-layer battery swap battery pack, which comprises a lower box body; the lower temperature adjusting mechanism is mounted at the bottom of the lower box body; the upper temperature adjusting structure is arranged near the upper part of the lower box body; the battery module is mounted on the lower temperature adjusting mechanism and the upper temperature adjusting mechanism; and the upper cover plate covers the upper end of the lower box body. Double-layer arrangement is adopted, the box body integrates liquid cooling and PTC functions, and the requirements of high electric quantity, integrated cooling and heating are met.

Description

Technical Field

[0001] The present invention belongs to the technical field of power batteries, and in particular relates to a double-layer battery replacement battery pack. Background Art

[0002] In the process of implementing the present invention, the inventors found that the prior art has at least the following problems:

[0003] The trend of electrification is getting stronger and stronger. As the most important component of electric vehicles, battery packs have always been concerned about battery life, fast charging, and normal operation at high and low temperatures. Therefore, solving the problems of integrated cooling and heating functions, fast charging, and high power consumption of battery packs has always been urgent and important. Traditional batteries cannot meet the goals of high power consumption and integrated cooling and heating functions.

[0004] CN112757885A-A method for improving the versatility of the middle mounting point of a battery pack and the vehicle body connection structure discloses a method for improving the versatility of the middle mounting point of a battery pack and the vehicle body connection structure. When designing the front floor assembly of the vehicle body, the present invention reserves mounting holes for the middle mounting points involved in all battery configurations, so that the front floor assembly has a flexible installation function, which improves compatibility with different battery packs, but cannot solve the above-mentioned technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a double-layer battery replacement battery pack with a double-layer layout and a box with integrated liquid cooling and PTC functions to meet the needs of high power, integrated cooling and heating.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a double-layer battery pack having:

[0007] lower box;

[0008] A lower temperature regulating mechanism is installed at the bottom of the lower box;

[0009] An upper temperature regulating structure is installed near the upper portion of the lower box;

[0010] A battery module is mounted on the lower temperature regulating mechanism and the upper temperature regulating structure;

[0011] An upper cover plate covers the upper end of the lower box body.

[0012] The lower box has:

[0013] The left longitudinal beam, the right longitudinal beam, the front cross beam and the rear cross beam are enclosed in a frame structure; the lower temperature regulating mechanism is installed at the bottom of the left longitudinal beam and the right longitudinal beam.

[0014] The bottoms of the left longitudinal beam and the right longitudinal beam are provided with lower steps, and the lower temperature regulating mechanism is installed on the lower steps.

[0015] An upper step is provided on the upper part of the left longitudinal beam and the right longitudinal beam, and the upper temperature regulating structure is installed on the upper step.

[0016] The lower temperature adjustment mechanism has a lower liquid cooling plate and a lower PCT, and the lower PCT is mounted on the lower liquid cooling plate.

[0017] The upper temperature adjustment structure has an upper liquid cooling plate and an upper PCT, and the upper PCT is mounted on the upper liquid cooling plate.

[0018] The lower liquid cooling plate is provided with a lower groove, and the lower PCT is installed in the lower groove.

[0019] A middle crossbeam is also provided near the middle of the lower box body, and the middle crossbeam separates the battery modules.

[0020] An upper support beam is disposed on the upper liquid cooling plate, and the upper support beam can support the battery module.

[0021] The upper liquid cooling plate is also provided with a BMS module.

[0022] One of the above technical solutions has the following advantages or beneficial effects: a double-layer arrangement is adopted, and the box integrates liquid cooling and PTC functions to meet the needs of high power, integrated cooling and heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a double-layer battery replacement battery pack provided in an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure of a double-layer battery replacement pack;

[0025] Figure 3 for Figure 1 A schematic diagram of the structure of a double-layer battery replacement pack;

[0026] Figure 4 for Figure 1 A schematic diagram of the structure of a double-layer battery replacement pack;

[0027] Figure 5 for Figure 1 A schematic diagram of the structure of a double-layer battery replacement pack;

[0028] Figure 6 for Figure 1 A schematic diagram of the structure of a double-layer battery replacement pack;

[0029] Figure 7 for Figure 1A schematic diagram of the structure of a double-layer battery replacement pack;

[0030] Figure 8 for Figure 1 A schematic diagram of the structure of a double-layer battery replacement pack;

[0031] Fig. 9 for Figure 1 A schematic diagram of the structure of a double-layer battery replacement pack;

[0032] The marks in the above figure are:

[0033] 1. Lower box, 11. Left longitudinal beam, 12. Right longitudinal beam, 13. Front cross beam, 14. Rear cross beam, 15. Middle cross beam, 16. Upper step, 17. Lower step;

[0034] 2. lower temperature regulating mechanism, 21. lower liquid cooling plate, 211. lower groove, 22. lower PCT;

[0035] 3. upper temperature regulating structure, 31. upper liquid cooling plate, 32. upper PCT, 33. upper support beam;

[0036] 4. Battery module;

[0037] 5. BMS module;

[0038] 6. Upper cover. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figures 1 to 9 A double-layer battery pack includes: a lower box 1; a lower temperature regulating mechanism 2, mounted on the bottom of the lower box 1; an upper temperature regulating structure 3, mounted near the upper part of the lower box 1; a battery module 4, mounted on the lower temperature regulating mechanism 2 and the upper temperature regulating structure 3; and an upper cover plate 6, covering the upper end of the lower box 1. The double-layer arrangement is adopted, and the box integrates liquid cooling and PTC functions to meet the needs of high power, integrated cooling and heating.

[0041] The lower box body 1 comprises: a left longitudinal beam 11, a right longitudinal beam 12, a front cross beam 13 and a rear cross beam 14, which form a frame structure to constitute the frame of the lower box body 1; the lower temperature regulating mechanism 2 is installed at the bottom of the left longitudinal beam 11 and the right longitudinal beam 12, and the left longitudinal beam 11 and the right longitudinal beam 12 play the role of supporting the lower temperature regulating mechanism 2.

[0042] A lower step 17 is provided at the bottom of the left longitudinal beam 11 and the right longitudinal beam 12, and the lower temperature regulating mechanism 2 is installed on the lower step 17, which plays a role in supporting the lower temperature regulating mechanism 2, and the support is stable and reliable.

[0043] An upper step 16 is provided on the upper part of the left longitudinal beam 11 and the right longitudinal beam 12, and the upper temperature regulating structure 3 is installed on the upper step 16 to support the upper temperature regulating mechanism, and the support is stable and reliable.

[0044] The lower temperature regulating mechanism 2 has a lower liquid cooling plate 21 and a lower PCT 22. The lower PCT 22 is installed on the lower liquid cooling plate 21. The lower liquid cooling plate 21 integrates the liquid cooling plate and the heating PCT at the same time. Different functional structures can be selected according to different seasons to achieve heat dissipation or heating. The structure is compact and occupies little space.

[0045] The upper temperature regulating structure 3 has an upper liquid cooling plate 31 and an upper PCT 32. The upper PCT 32 is installed on the upper liquid cooling plate 31. The upper liquid cooling plate 31 integrates both the liquid cooling plate and the heating PCT. Different functional structures can be selected according to different seasons to achieve heat dissipation or heating. The structure is compact and occupies little space.

[0046] A lower groove 211 is provided on the lower liquid cooling plate 21 , and the lower PCT 22 is installed in the lower groove 211 , which facilitates the installation of the lower PCT 22 .

[0047] A middle cross beam 15 is also provided near the middle of the lower box body 1 , and the middle cross beam 15 separates the battery modules 4 . The middle cross beam 15 can separate the battery modules 4 while improving the strength of the lower box body 1 to prevent collisions between the battery modules 4 .

[0048] An upper support beam 33 is provided on the upper liquid cooling plate 31 , and the upper support beam 33 can support the battery module 4 , thereby increasing the structural strength of the upper liquid cooling plate 31 and supporting the battery module 4 more stably and reliably.

[0049] A BMS module 5 is also provided on the upper liquid cooling plate 31 to control the battery module 4 .

[0050] The box body adopts aluminum profile technology, and the aluminum profile is welded into the lower box body by stir friction welding; the bottom bracket of the lower box body integrates liquid cooling and PTC functions; the box body integrates a two-layer plate fixing structure, and the second layer plate is locked on the fixing structure by bolts; the second layer plate integrates liquid cooling and PTC functions; the quick-change water nozzle and connectors are arranged on the box cover.

[0051] The present invention adopts a double-layer box body to integrate liquid cooling and PTC functions, and a double-layer battery pack to integrate a fast battery replacement function.

[0052] After adopting the above structure, a double-layer layout is adopted, and the box integrates liquid cooling and PTC functions to meet the needs of high power, integrated cooling and heating.

[0053] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-layer battery pack, characterized in that: have: lower box; A lower temperature regulating mechanism is installed at the bottom of the lower box; An upper temperature regulating structure is installed near the upper portion of the lower box; A battery module is mounted on the lower temperature regulating mechanism and the upper temperature regulating structure; An upper cover plate covers the upper end of the lower box body.

2. The double-layer battery pack according to claim 1, characterized in that: The lower box has: The left longitudinal beam, the right longitudinal beam, the front cross beam and the rear cross beam are enclosed in a frame structure; the lower temperature regulating mechanism is installed at the bottom of the left longitudinal beam and the right longitudinal beam.

3. The double-layer battery pack according to claim 2, characterized in that: The bottoms of the left longitudinal beam and the right longitudinal beam are provided with lower steps, and the lower temperature regulating mechanism is installed on the lower steps.

4. The double-layer battery pack according to claim 3, characterized in that: An upper step is provided on the upper part of the left longitudinal beam and the right longitudinal beam, and the upper temperature regulating structure is installed on the upper step.

5. The double-layer battery pack according to claim 4, characterized in that: The lower temperature adjustment mechanism has a lower liquid cooling plate and a lower PCT, and the lower PCT is mounted on the lower liquid cooling plate.

6. The double-layer battery pack according to claim 5, characterized in that: The upper temperature adjustment structure has an upper liquid cooling plate and an upper PCT, and the upper PCT is mounted on the upper liquid cooling plate.

7. The double-layer battery pack according to claim 6, characterized in that: The lower liquid cooling plate is provided with a lower groove, and the lower PCT is installed in the lower groove.

8. The double-layer battery pack according to claim 7, characterized in that: A middle crossbeam is also provided near the middle of the lower box body, and the middle crossbeam separates the battery modules.

9. The double-layer battery pack according to claim 8, characterized in that: An upper support beam is disposed on the upper liquid cooling plate, and the upper support beam can support the battery module.

10. The double-layer battery pack according to claim 9, characterized in that: The upper liquid cooling plate is also provided with a BMS module.

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