Quick-release battery pack shell and battery pack with same

Abstract

The invention relates to the field of battery packs, in particular to a quick release type battery pack shell and a battery pack with the battery pack shell, the quick release type battery pack shell comprises a lower box body and an upper cover plate, and the upper cover plate comprises an upper cover body; the periphery of the upper cover body is provided with a fitting flange; the upper cover plate covers the lower box body in an attached mode through the attached turned-over edge. The lower box body is connected with the upper cover plate through a clamping structure; the clamping structure comprises a plurality of padlock mechanisms; the plurality of padlock mechanisms are distributed in the circumferential direction of the battery pack shell at intervals; each padlock mechanism comprises a padlock base mounted on the lower box body; a lock hook is arranged on the padlock base; the lock hook is connected with a lock handle; the lock handle drives the lock hook to move; according to the invention, the clamping structure is arranged; the connection between the lower box body and the upper cover plate is facilitated, and the problems that when bolts or rivets are traditionally used for connection, the number of assembled or disassembled fasteners is large, and the assembling or disassembling process is tedious are solved.

Description

Technical Field

[0001] The present invention relates to the field of battery packs, and in particular to a quick-detachable battery pack shell and a battery pack having the battery pack shell. Background Art

[0002] The existing battery pack cover and box body are connected by bolts and rivet nuts, and a sealing strip is added in the middle for sealing. The torque of the bolts and nuts needs to be strictly controlled. If the torque is too small, it is easy to leak, and if the torque is too large, it is easy to be damaged. The spacing requirement is very small (generally less than 70). Such a large battery pack requires more than 100 bolts for locking connection.

[0003] Moreover, more than 100 rivet nuts are required, and the solution for locking the box cover is time-consuming and inefficient.

[0004] In addition, during the use of the battery pack, electrical components, connecting wires or BMS are prone to failure. Under the current circumstances, they need to be opened for repair or replacement. The efficiency of disassembling and assembling bolts is low. In addition, the bolts and nuts have service life issues and are generally scrapped after being disassembled several times, which increases costs and is unsafe. If individual bolts are not firmly fixed and are not discovered, it is very easy for water to enter the battery pack, and there is a risk of insulation failure or battery short circuit.

[0005] In addition, as the most important component of electric vehicles, battery packs have always been concerned about battery life, rapid charging, and normal operation at high and low temperatures. Therefore, solving the problems of battery packs with integrated cooling and heating functions, rapid charging, and high power consumption has always been urgent and important. Traditional batteries cannot meet the goals of high power consumption and integrated cooling and heating functions.

[0006] 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.

[0007] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the design of the existing battery pack structure. Summary of the invention

[0008] The purpose of the present invention is to provide a new battery pack housing which is convenient for installation and disassembly.

[0009] In order to achieve the above object, the technical solution adopted by the present invention is:

[0010] A quick-release battery pack shell, comprising a lower box body and an upper cover plate, wherein the upper cover plate comprises an upper cover body; a fitting flange is provided around the upper cover body; and the upper cover plate is fitted and covered on the lower box body through the fitting flange;

[0011] The lower box body and the upper cover plate are connected via a clamping structure;

[0012] The clamping structure includes a plurality of padlock mechanisms;

[0013] The plurality of padlock mechanisms are spaced apart and distributed around the battery pack housing;

[0014] Each of the padlock mechanisms comprises a padlock base mounted on the lower box body; a lock hook is arranged on the padlock base; the lock hook is connected to a lock handle; and the lock hook is driven to move by the lock handle.

[0015] The lock hook comprises a lock hook horizontal plate; the lock hook horizontal plate is connected to a lock hook connecting plate, and the lock hook horizontal plate and the lock hook connecting plate are arranged to intersect; the lock hook horizontal plate is connected to the lock handle through the lock hook connecting plate; and an anti-slip rubber pad is provided on the lock hook horizontal plate.

[0016] The lock handle is connected to the padlock base through a first rotating component, and the lock handle is connected to the lock hook through a second rotating component; the first rotating component and the second rotating component are spaced apart; the lock handle drives the lock hook to rotate and cover the fitting flange of the upper cover plate through the first rotating component and the second rotating component;

[0017] The first rotating component comprises a padlock support arranged on the padlock base, and the lock handle is connected to the padlock base via a first rotating shaft; the second rotating component comprises a second rotating shaft, and the lock handle is connected to the lock hook via the second rotating shaft.

[0018] The first rotating shaft and the second rotating shaft are staggered; the vertical distance between the central axis of the first rotating shaft and the outer side surface of the battery pack shell is greater than the vertical distance between the central axis of the second rotating shaft and the outer side surface of the battery pack shell.

[0019] The padlock mechanism also includes a limiting mechanism arranged on the padlock base; the limiting mechanism includes an anti-detachment hook arranged on the padlock base, the anti-detachment hook is connected to the padlock base through a rotating pin shaft, and the anti-detachment hook is connected to a reset spring for resetting the anti-detachment hook; the reset spring is sleeved on the rotating pin shaft, one end of the reset spring presses against the padlock base, and the other end presses against the anti-detachment hook.

[0020] The lock handle is provided with an anti-dropping protrusion used in conjunction with the anti-dropping hook; the anti-dropping hook is hooked on the anti-dropping protrusion of the corresponding lock handle.

[0021] The padlock mechanism also includes a protection mechanism; the protection mechanism includes a protection horizontal plate, and the protection horizontal plate is arranged perpendicular to the padlock base; the protection horizontal plate is provided with a protruding anti-drop hook; and an anti-drop limit column is provided on the side of the protection horizontal plate away from the padlock base.

[0022] A plurality of protective protrusions are arranged on the fitting flange; each of the protective protrusions is arranged in the area between adjacent padlock mechanisms.

[0023] A double-layer battery pack, comprising a battery pack shell; a lower temperature regulating mechanism, an upper temperature regulating structure and a battery module are arranged in the battery pack shell; an upper cover in the battery pack shell covers a lower box;

[0024] A lower temperature regulating mechanism is installed at the bottom of the lower box;

[0025] An upper temperature regulating structure is installed at one end of the lower box body close to the upper cover plate;

[0026] The battery module is mounted on the lower temperature regulating mechanism and the upper temperature regulating structure.

[0027] The lower box body includes a left longitudinal beam, a right longitudinal beam, a front cross beam and a rear cross beam, and the left longitudinal beam, the right longitudinal beam, the front cross beam and the rear cross beam form a frame structure; the lower temperature regulating mechanism is installed at the bottom of the left longitudinal beam and the right longitudinal beam; the bottom of the left longitudinal beam and the right longitudinal beam is provided with a lower step, and the lower temperature regulating mechanism is installed on the lower step; the upper part of the left longitudinal beam and the right longitudinal beam is provided with an upper step, and the upper temperature regulating structure is installed on the upper step.

[0028] The advantages of the present invention are:

[0029] The invention discloses a quick-detachable battery pack shell and a battery pack having the battery pack shell.

[0030] The present invention facilitates the connection between the lower box body and the upper cover plate by setting a clamping structure, and avoids the problems of a large number of fasteners to be assembled or disassembled and a complicated assembly or disassembly process when bolts or rivets are used for connection in the traditional way. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0032] Figure 1 It is a schematic structural diagram of the battery pack shell from the first perspective in the present invention.

[0033] Figure 2 It is a schematic structural diagram of the battery pack shell from a second viewing angle in the present invention.

[0034] Figure 3It is a structural schematic diagram of the padlock mechanism of the present invention from the first perspective.

[0035] Figure 4 It is a schematic diagram of the structure of the padlock mechanism of the present invention after the anti-unhooking is removed.

[0036] Figure 5 It is a structural schematic diagram of the padlock mechanism of the present invention from the first perspective.

[0037] Figure 6 This is a schematic diagram of the structure of the double-layer battery pack after removing the upper cover plate in the present invention;

[0038] Figure 7 It is a structural schematic diagram of the upper temperature adjustment structure arranged on the lower box body in the present invention.

[0039] Figure 8 It is a structural schematic diagram of the upper temperature adjustment structure in the present invention.

[0040] Fig. 9 It is a structural schematic diagram of the lower box body and the lower temperature adjustment structure when connected in the present invention.

[0041] Fig.10 It is a structural schematic diagram of the lower temperature adjustment structure of the present invention.

[0042] Fig.11 It is a structural schematic diagram of the lower box body in the present invention.

[0043] Fig.12 It is a schematic diagram of the structure of the lower liquid cooling plate in the present invention.

[0044] Fig.13 It is a schematic diagram of the structure of PCT in the present invention.

[0045] The marks in the above figure are:

[0046] 1-1 battery pack shell, 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;

[0047] 2. lower temperature regulating mechanism, 21. lower liquid cooling plate, 211. lower groove, 22. lower PCT;

[0048] 3. upper temperature regulating structure, 31. upper liquid cooling plate, 32. upper PCT, 33. upper support beam;

[0049] 4. Battery module;

[0050] 5. BMS module;

[0051] 6. Upper cover;

[0052] 701. Clamping structure. 7. Padlocking mechanism. DETAILED DESCRIPTION

[0053] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0054] A quick-release battery pack shell 1-1 includes a lower box body 1 and an upper cover plate 6, wherein the upper cover plate 6 includes an upper cover body 61; a fitting flange 62 is provided around the upper cover body 61; the upper cover plate 6 is fitted and covered on the lower box body 1 through the fitting flange 62; the lower box body 1 and the upper cover plate 6 are connected by a clamping structure 701; the present invention facilitates the connection between the lower box body 1 and the upper cover plate 6 through the setting of the clamping structure 701, avoiding the problem of a large number of fasteners for assembly or disassembly and a cumbersome assembly or disassembly process when traditional bolts or rivets are used for connection.

[0055] The battery pack shell 1-1 disclosed in the present invention mainly includes a lower box body 1 and an upper cover plate 6. The lower box body 1 and the upper cover plate 6 form a box structure, which facilitates the placement and arrangement of subsequent battery modules.

[0056] In addition, in the present invention, the upper cover 6 includes an upper cover body 61; a fitting flange 62 is provided around the upper cover body 61; the upper cover 6 is fitted and covered on the lower box body 1 through the fitting flange 62; based on such a setting, the vertical cross-section of the upper cover 6 is in the shape of a "J", which is convenient for increasing the storage space inside the battery pack shell 1-1, and at the same time, it is convenient for the fitting installation between the upper cover 6 and the lower box body 1.

[0057] In addition, in the present invention, the lower box body 1 and the upper cover plate 6 are connected via a clamping structure 701; the clamping structure 701 is mainly used to replace the use of traditional fastening bolts, thereby reducing the trouble of tightening the bolts one by one during subsequent assembly.

[0058] In the present invention, the clamping structure 701 includes a plurality of padlock mechanisms 7; the plurality of padlock mechanisms 7 are spaced apart in the circumferential direction of the battery pack shell 1-1; the padlock mechanism 7 disclosed in the present invention is essentially a quick clamp structure, which mainly realizes the connection and tightening between the upper cover plate 6 and the lower box body 1 through the squeezing of the padlock mechanism 7.

[0059] In the present invention, each of the padlock mechanisms 7 includes a padlock base 74 installed on the lower box body 1; the padlock base 74 is fixedly connected to the lower box body 1; a lock hook 71 is provided on the padlock base 74; the lock hook 71 is connected to a lock handle 73; the lock hook 71 is driven to move by the lock handle 73; the padlock base 74 is fastened to the lower box body 1, the lock hook 71 acts as a hook structure, and the lock handle 73 is a holding rod or an operating rod. In subsequent use, the position of the lock handle 73 is controlled so that the lock handle 73 drives the lock hook 71 to move, thereby controlling the installation connection of the lock hook 71 on the battery pack shell 1-1.

[0060] Furthermore, in the present invention, the lock hook 71 includes a lock hook transverse plate 711; the lock hook transverse plate 711 is connected to a lock hook connecting plate 712, and the lock hook transverse plate 711 and the lock hook connecting plate 712 are arranged to intersect; the lock hook transverse plate 711 is connected to the lock handle 73 through the lock hook connecting plate 712; generally, the lock hook connecting plate 712 and the lock hook transverse plate 711 are arranged perpendicular to each other, and such an arrangement facilitates the sufficient contact between the lock hook transverse plate 711 and the upper end of the fitting flange 62 during subsequent use; at the same time, in order to ensure the stability of the lock hook 71 when installed on the battery pack shell 1-1, in the present invention, an anti-slip rubber pad 72 is provided on the lock hook transverse plate 711; the anti-slip rubber pad 72 plays a good protective role, mainly used to increase the friction between the lock hook 71 and the upper cover plate 6, and at the same time absorb the gap caused by the upper and lower tolerances during the production of the components through the rubber interference fit.

[0061] Furthermore, in the present invention, the lock handle 73 is connected to the padlock base 74 through a first rotating component, and the lock handle 73 is connected to the lock hook 71 through a second rotating component; the first rotating component and the second rotating component are distributed at intervals; the lock handle 73 drives the lock hook 71 to rotate and press on the fitting flange 62 of the upper cover 6 through the first rotating component and the second rotating component; the first rotating component and the second rotating component are the rotation basis, which facilitates the lock handle 73 to drive the lock hook 71.

[0062] Furthermore, in the present invention, the first rotating component includes a padlock support 751 arranged on the padlock base 74, and the lock handle 73 is connected to the padlock base 74 through a first rotating shaft 75; the second rotating component includes a second rotating shaft 76, and the lock handle 73 is connected to the lock hook 71 through the second rotating shaft 76; the first rotating shaft 75 is the rotation fulcrum of the lock handle 73, and the second rotating shaft 76 is the connection point between the lock handle 73 and the lock hook 71; the padlock support 751 plays a good supporting and heightening role.

[0063] At the same time, in the present invention, the first rotating shaft 75 and the second rotating shaft 76 are staggered; the vertical distance between the central axis of the first rotating shaft 75 and the outer side of the battery pack shell 1-1 is greater than the vertical distance between the central axis of the second rotating shaft 76 and the outer side of the battery pack shell 1-1; such a setting can prevent the lock handle 73 from being offset without the action of external force; and avoid the lack of binding force between the lower box body 1 and the upper cover plate 6.

[0064] Furthermore, the padlock mechanism 7 in the present invention also includes a limiting mechanism arranged on the padlock base 74; the setting of the limiting mechanism can limit the position of the lock handle 73 to prevent the lock handle 73 from being offset and causing the loss of binding force between the lower box body 1 and the upper cover plate 6.

[0065] Specifically, the limiting mechanism in the present invention includes an anti-detachment hook 77 arranged on the padlock base 74, and the anti-detachment hook 77 is connected to the padlock base 74 through a rotating pin 771, and the anti-detachment hook 77 is connected to a reset spring 772 for resetting the anti-detachment hook 77; the reset spring 772 is sleeved on the rotating pin 771, and one end of the reset spring 772 presses against the padlock base 74, and the other end presses against the anti-detachment hook 77; in the present invention, the anti-detachment hook 77 is hung on the lock handle 73, and the anti-detachment hook 77 plays a restraining role to prevent the lock handle 73 from rotating.

[0066] At the same time, in order to facilitate the connection between the locking handle 73 and the anti-detachment hook 77, the locking handle 73 in the present invention is provided with an anti-detachment protrusion 731 used in conjunction with the anti-detachment hook 77; the anti-detachment hook 77 is hung on the anti-detachment protrusion 731 of the corresponding locking handle 73; based on such a setting, the connection between the locking handle 73 and the anti-detachment hook 77 is facilitated.

[0067] Furthermore, the padlock mechanism 7 in the present invention also includes a protective mechanism; the protective mechanism plays a protective role to prevent the anti-detachment hook 77 from rotating due to a lateral impact, and to prevent the anti-detachment hook 77 from detaching from the lock handle 73.

[0068] Specifically, the protection mechanism described in the present invention includes a protection transverse plate 78, and the protection transverse plate 78 is arranged perpendicular to the padlock base 74; the protection transverse plate 78 protrudes the anti-disconnection hook 77; the vertical distance between the outer side surface of the protection transverse plate 78 and the outer side surface of the battery pack shell 1-1 is greater than the vertical distance between the outer side surface of the anti-disconnection hook 77 and the outer side surface of the battery pack shell 1-1; based on this, when there is a lateral impact force, the impact force will first hit the protection transverse plate 78, thereby preventing the impact force from hitting the anti-disconnection hook 77, causing the anti-disconnection hook 77 to disengage from the lock handle 73.

[0069] At the same time, in the present invention, an anti-drop limit column 79 is provided on the side of the protective horizontal plate 78 away from the padlock base 74; the anti-drop limit column 79 plays a good lateral limiting role and can control the rotation range of the anti-drop hook 77.

[0070] Furthermore, in the present invention, a plurality of protective protrusions 63 are provided on the fitting flange 62; each of the protective protrusions 63 is arranged in the area between adjacent padlock mechanisms 7; the protective protrusions 63 are used to strengthen the strength of the fitting flange 62 of the upper cover plate 6 to prevent deformation of the fitting flange 62 in the area without the padlock mechanism 7 and cause air leakage.

[0071] A double-layer battery pack, comprising a battery pack shell 1-1; a lower temperature regulating mechanism, an upper temperature regulating structure and a battery module are arranged in the battery pack shell 1-1; an upper cover 61 in the battery pack shell 1-1 covers a lower box 1; a lower temperature regulating mechanism is installed at the bottom of the lower box 1; an upper temperature regulating structure is installed at one end of the lower box 1 close to the upper cover 6; a battery module is installed on the lower temperature regulating mechanism and the upper temperature regulating structure; the lower box 1 comprises a left longitudinal beam, a right longitudinal beam, a front cross beam and a rear cross beam The left longitudinal beam, the right longitudinal beam, the front cross beam and the rear cross beam form a frame structure; the lower temperature regulating mechanism is installed at the bottom of the left longitudinal beam and the right longitudinal beam; the bottom of the left longitudinal beam and the right longitudinal beam is provided with a lower step, and the lower temperature regulating mechanism is installed on the lower step; the upper part of the left longitudinal beam and the right longitudinal beam is provided with an upper step, and the upper temperature regulating structure is installed on the upper step; through the above design, the battery disclosed in the present invention includes a double-layer arrangement, and the box body integrates liquid cooling and PTC functions to meet the needs of high power, integrated cooling and heating.

[0072] See also Figure 1-9 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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 .

[0079] 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 .

[0080] 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.

[0081] A BMS module 5 is also provided on the upper liquid cooling plate 31 to control the battery module 4 .

[0082] The box body adopts aluminum profile technology, and the aluminum profile is welded into the lower box body 1 by stir friction welding; the bottom bracket of the lower box body 1 integrates liquid cooling and PTC functions; the box body integrates a two-layer plate fixing structure, and the two-layer plate is locked on the fixing structure by bolts; the two-layer plate integrates liquid cooling and PTC functions; the quick-change water nozzle and connectors are arranged on the box cover.

[0083] 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.

[0084] 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.

[0085] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A quick-release battery pack housing, characterized in that: It includes a lower box body and an upper cover plate, wherein the upper cover plate includes an upper cover body; a fitting flange is provided around the upper cover body; and the upper cover plate is fitted and covered on the lower box body through the fitting flange; The lower box body and the upper cover plate are connected via a clamping structure; The clamping structure includes a plurality of padlock mechanisms; The plurality of padlock mechanisms are spaced apart and distributed around the battery pack housing; Each of the padlock mechanisms comprises a padlock base mounted on the lower box body; a lock hook is arranged on the padlock base; the lock hook is connected to a lock handle; and the lock hook is driven to move by the lock handle.

2. A quick-release battery pack housing according to claim 1, characterized in that: The lock hook comprises a lock hook horizontal plate; the lock hook horizontal plate is connected to a lock hook connecting plate, and the lock hook horizontal plate and the lock hook connecting plate are arranged to intersect; the lock hook horizontal plate is connected to the lock handle through the lock hook connecting plate; and an anti-slip rubber pad is provided on the lock hook horizontal plate.

3. The quick-release battery pack housing according to claim 1, characterized in that: The lock handle is connected to the padlock base through a first rotating component, and the lock handle is connected to the lock hook through a second rotating component; the first rotating component and the second rotating component are spaced apart; the lock handle drives the lock hook to rotate and cover the fitting flange of the upper cover plate through the first rotating component and the second rotating component; The first rotating component comprises a padlock support arranged on the padlock base, and the lock handle is connected to the padlock base via a first rotating shaft; the second rotating component comprises a second rotating shaft, and the lock handle is connected to the lock hook via the second rotating shaft.

4. A quick-release battery pack housing according to claim 3, characterized in that: The first rotating shaft and the second rotating shaft are staggered; the vertical distance between the central axis of the first rotating shaft and the outer side surface of the battery pack shell is greater than the vertical distance between the central axis of the second rotating shaft and the outer side surface of the battery pack shell.

5. The quick-release battery pack housing according to claim 1, characterized in that: The padlock mechanism also includes a limiting mechanism arranged on the padlock base; the limiting mechanism includes an anti-detachment hook arranged on the padlock base, the anti-detachment hook is connected to the padlock base through a rotating pin shaft, and the anti-detachment hook is connected to a reset spring for resetting the anti-detachment hook; the reset spring is sleeved on the rotating pin shaft, one end of the reset spring presses against the padlock base, and the other end presses against the anti-detachment hook.

6. The quick-release battery pack housing according to claim 5, characterized in that: The lock handle is provided with an anti-dropping protrusion used in conjunction with the anti-dropping hook; the anti-dropping hook is hooked on the anti-dropping protrusion of the corresponding lock handle.

7. The quick-release battery pack housing according to claim 5, characterized in that: The padlock mechanism also includes a protection mechanism; the protection mechanism includes a protection horizontal plate, and the protection horizontal plate is arranged perpendicular to the padlock base; the protection horizontal plate is provided with a protruding anti-drop hook; and an anti-drop limit column is provided on the side of the protection horizontal plate away from the padlock base.

8. The quick-release battery pack housing according to claim 1, characterized in that: A plurality of protective protrusions are arranged on the fitting flange; each of the protective protrusions is arranged in the area between adjacent padlock mechanisms.

9. A double-layer battery pack, characterized in that: Comprising a battery pack shell as described in claims 1-8; a lower temperature regulating mechanism, an upper temperature regulating structure and a battery module are arranged in the battery pack shell; an upper cover in the battery pack shell covers the lower box body; A lower temperature regulating mechanism is installed at the bottom of the lower box; An upper temperature regulating structure is installed at one end of the lower box body close to the upper cover plate; The battery module is mounted on the lower temperature regulating mechanism and the upper temperature regulating structure.

10. A double-layer battery pack as claimed in claim 9, characterized in that: The lower box body comprises a left longitudinal beam, a right longitudinal beam, a front cross beam and a rear cross beam, and the left longitudinal beam, the right longitudinal beam, the front cross beam and the rear cross beam form a frame structure; the lower temperature adjustment mechanism is installed at the bottom of the left longitudinal beam and the right longitudinal beam; The bottom of the left longitudinal beam and the right longitudinal beam is provided with a lower step, and the lower temperature regulating mechanism is installed on the lower step; the upper part of the left longitudinal beam and the right longitudinal beam is provided with an upper step, and the upper temperature regulating structure is installed on the upper step.

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