Battery pack release device, power battery system and vehicle

Abstract

The utility model belongs to the installation field of vehicle electric propulsion device, specifically provides a battery pack release device, power battery system and vehicle. The release device includes upper bracket and lower bracket, and the lateral both sides of lower bracket are hinged with the pressure bar that can swing up and down, and the lateral both sides of upper bracket are equipped with the pressure solid structure, and the pressure solid structure is equipped with the pressure solid bolt for the pressure bar, after the inward movement of upper bracket is in place, the pressure bar is pasted and presses on the pressure solid structure, and the outer end of pressure bar is fixed on lower bracket through pressure solid bolt, to fix upper bracket and lower bracket. The power battery system includes the release device, and the vehicle includes the power battery system. The fixing of the upper bracket and the lower bracket of the release device is realized through the pressure joint of the pressure bar and the pressure solid structure, when the battery pack is normally used, the pressure bar is pressed on the pressure solid structure, and is locked firmly with the pressure solid bolt, there is no more complex lock hook structure, has higher reliability, is suitable for the vehicle that vibration is stronger.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle electric propulsion device installation, and in particular relates to a battery pack release device, a power battery system and a vehicle. Background Technology

[0002] With the rapid popularization of new energy vehicles, fire accidents caused by battery pack thermal runaway in end-user new energy vehicles have also occurred from time to time. As the primary key characteristic of new energy vehicles, safety is receiving increasing attention.

[0003] To enhance safety, in emergency situations, quickly separating the faulty battery pack from the vehicle is a viable measure to ensure personnel safety and preserve the vehicle's integrity as much as possible.

[0004] Chinese invention patent application CN119428204A discloses a remotely controllable quick-release device for a battery pack. This device includes an upper bracket, a lower bracket, a locking mechanism, an actuator, and a cylinder. The upper and lower brackets are slidably connected via a sliding assembly. The battery pack can be fixedly mounted on the upper bracket, and the lower bracket can be fixed to a vehicle carrier. The locking mechanism is located on the lower bracket, and the actuator is located on the upper bracket. When the upper bracket slides into the lower bracket, the locking mechanism locks the actuator, achieving relative fixation between the upper and lower brackets. The actuator includes an unlocking body and a spring. In an emergency, the cylinder actuates, pushing the unlocking body outward, triggering the locking mechanism to unlock, and pushing the upper bracket out, thus quickly releasing the battery pack.

[0005] Currently, commercial vehicles such as heavy-duty trucks and mining trucks are also moving towards electrification. Unlike buses and passenger cars, heavy-duty trucks and mining trucks often operate on poor road conditions, especially mining trucks, which experience significant vibrations during operation. The aforementioned release devices are quite complex in structure, including locking mechanisms such as locking hooks and locking tongues. For vehicles like mining trucks operating under harsh conditions, using such release devices could easily damage the locking mechanism due to the vehicle's vibrations being transmitted to the battery pack. In other words, these release devices suffer from reliability issues. Utility Model Content

[0006] The purpose of this invention is to provide a battery pack release device to solve the technical problem of insufficient reliability in existing battery pack release devices. Another purpose of this invention is to provide a power battery system to solve the same problem. A further purpose of this invention is to provide a vehicle to solve the same problem.

[0007] To achieve the above objectives, the technical solution of the battery pack release device provided by this utility model is as follows: A battery pack release device includes a lower bracket and a movable upper bracket. The upper bracket is used to fix the battery pack so that the battery pack can be released by moving from the inside to the outside and installed by moving from the outside to the inside through the translation of the upper bracket relative to the lower bracket. The translation direction of the upper bracket is defined as longitudinal. The lower bracket has a pressure rod that can swing up and down hinged on both sides of its transverse direction. The upper bracket has a clamping structure on both sides of its transverse direction. The pressure rod is equipped with a clamping bolt. After the upper bracket moves inward into place, the pressure rod presses against the clamping structure, and the outer end of the pressure rod is fixed to the lower bracket by the clamping bolt to fix the upper bracket and the lower bracket.

[0008] As a further improvement, in the longitudinal direction, the length of the pressure bar is greater than the length of the upper bracket, and both ends of the pressure bar extend beyond the longitudinal ends of the upper bracket.

[0009] As a further improvement, the lower bracket includes a left longitudinal beam and a right longitudinal beam that extend longitudinally and are arranged laterally at intervals. A front crossbeam and a rear crossbeam that extend laterally and are arranged longitudinally at intervals are connected between the left and right longitudinal beams. A guide is mounted on the upper bracket, and the left and right longitudinal beams are provided with a guide engagement structure that cooperates with the guide.

[0010] As a further improvement, the guide is a roller mounted on the upper bracket, and the left and right longitudinal beams have guide grooves with upward openings for guiding the movement of the rollers, and the guide grooves constitute a guiding fit structure.

[0011] As a further improvement, the compression structure consists of compression edges that extend continuously in the longitudinal direction on both sides of the upper bracket.

[0012] This utility model is an improved invention with the following advantages: In the event of an emergency with the battery pack, the release device can move the upper bracket horizontally, thereby moving the battery pack outwards and releasing it, preventing the battery pack from affecting personnel or other vehicle components, thus improving safety. Unlike existing technologies, the upper and lower brackets are fixed through a pressure rod and a clamping structure. Specifically, during normal battery pack use, the pressure rod presses against the clamping structure and is firmly locked with clamping bolts. There is no complex locking hook structure, resulting in high reliability and suitability for vehicles with strong vibrations. In case of an emergency, removing the clamping bolts releases the pressure rod, and lifting the pressure rod releases the pressure on the clamping structure, allowing the upper bracket to move normally.

[0013] To achieve the above objectives, the technical solution of the power battery system provided by this utility model is as follows: A power battery system includes a battery pack and a release device. The release device includes a lower bracket and an upper bracket. The battery pack is fixed on the upper bracket, and the lower bracket is used to fix it on a vehicle carrier. The upper bracket can be translated relative to the lower bracket to drive the battery pack to be translated from the inside to the outside for release and from the outside to the inside for installation. The translation direction of the upper bracket is defined as longitudinal. The lower bracket has a pressure rod that can swing up and down hinged on its two transverse sides. The upper bracket has a clamping structure on its two transverse sides, and clamping bolts are provided for the pressure rods. After the upper bracket moves inward into place, the pressure rods press against the clamping structure, and the outer end of the pressure rods is fixed to the lower bracket by the clamping bolts to fix the upper bracket and the lower bracket.

[0014] As a further improvement, a panel is provided at the inward end of the battery pack, and an electrical connector for connecting the battery pack to the vehicle is provided on the panel. A manual maintenance switch is provided at the outward end of the battery pack or at one of the two lateral ends of the battery pack.

[0015] As a further improvement, in the longitudinal direction of the release device, the length of the pressure rod is greater than the length of the upper bracket, and both ends of the pressure rod extend beyond the longitudinal ends of the upper bracket.

[0016] As a further improvement, the lower bracket includes a left longitudinal beam and a right longitudinal beam that extend longitudinally along the release device and are arranged laterally at intervals. A front crossbeam and a rear crossbeam that extend laterally and are arranged longitudinally at intervals are connected between the left and right longitudinal beams. A guide is mounted on the upper bracket, and the left and right longitudinal beams are provided with a guide engagement structure that cooperates with the guide.

[0017] As a further improvement, the guide is a roller mounted on the upper bracket, and the left and right longitudinal beams have guide grooves with upward openings for guiding the movement of the rollers, and the guide grooves constitute a guiding fit structure.

[0018] As a further improvement, the compression structure consists of compression edges that extend continuously in the longitudinal direction on both sides of the upper bracket.

[0019] This utility model is an improved invention with the following advantages: The power battery system is equipped with a release device for the battery pack. In case of an emergency, this device can move the upper bracket horizontally, thereby moving the battery pack outwards to release it, preventing the battery pack from affecting personnel or other vehicle components and improving safety. Unlike existing technologies, the upper and lower brackets are fixed through a pressure rod and a clamping structure. Specifically, during normal use, the pressure rod presses against the clamping structure and is firmly locked with clamping bolts. There is no complex locking hook structure, resulting in high reliability and suitability for vehicles with strong vibrations. In case of an emergency, removing the clamping bolts releases the pressure rod, and lifting the pressure rod releases the pressure on the clamping structure, allowing the upper bracket to move normally.

[0020] To achieve the above objectives, the technical solution for the vehicle provided by this utility model is as follows: A vehicle includes a power battery system, which includes a battery pack and a release device. The release device includes a lower bracket and an upper bracket. The battery pack is fixed on the upper bracket, and the lower bracket is used to fix it to the vehicle carrier. The upper bracket can be translated relative to the lower bracket to drive the battery pack to be translated from the inside to the outside for release and from the outside to the inside for installation. The translation direction of the upper bracket is defined as longitudinal. The lower bracket has a pressure rod that can swing up and down hinged on its two transverse sides. The upper bracket has a clamping structure on its two transverse sides, and clamping bolts are provided for the pressure rods. After the upper bracket moves inward into place, the pressure rods press against the clamping structure, and the outer end of the pressure rods is fixed to the lower bracket by the clamping bolts to fix the upper bracket and the lower bracket.

[0021] As a further improvement, a panel is provided at the inward end of the battery pack, and an electrical connector for connecting the battery pack to the vehicle is provided on the panel. A manual maintenance switch is provided at the outward end of the battery pack or at one of the two lateral ends of the battery pack.

[0022] As a further improvement, in the longitudinal direction of the release device, the length of the pressure rod is greater than the length of the upper bracket, and both ends of the pressure rod extend beyond the longitudinal ends of the upper bracket.

[0023] As a further improvement, the lower bracket includes a left longitudinal beam and a right longitudinal beam that extend longitudinally along the release device and are arranged laterally at intervals. A front crossbeam and a rear crossbeam that extend laterally and are arranged longitudinally at intervals are connected between the left and right longitudinal beams. A guide is mounted on the upper bracket, and the left and right longitudinal beams are provided with a guide engagement structure that cooperates with the guide.

[0024] As a further improvement, the guide is a roller mounted on the upper bracket, and the left and right longitudinal beams have guide grooves with upward openings for guiding the movement of the rollers, and the guide grooves constitute a guiding fit structure.

[0025] As a further improvement, the compression structure consists of compression edges that extend continuously in the longitudinal direction on both sides of the upper bracket.

[0026] This utility model is an improved invention with the following advantages: The power battery system is equipped with a release device for the battery pack. In case of an emergency, this device can move the upper bracket horizontally, thereby moving the battery pack outwards to release it, preventing the battery pack from affecting personnel or other vehicle components and improving safety. Unlike existing technologies, the upper and lower brackets are fixed through a pressure rod and a clamping structure. Specifically, during normal use, the pressure rod presses against the clamping structure and is firmly locked with clamping bolts. There is no complex locking hook structure, resulting in high reliability and suitability for vehicles with strong vibrations. In case of an emergency, removing the clamping bolts releases the pressure rod, and lifting the pressure rod releases the pressure on the clamping structure, allowing the upper bracket to move normally. Attached Figure Description

[0027] Figure 1 This is an isometric view of one of the embodiments of the power battery system in this utility model. Figure 2 This is an isometric view of another perspective of the power battery system implementation method in this utility model; Figure 3 This is a schematic diagram of the structure of the battery pack release device in this utility model; Figure 4 This is a schematic diagram of the upper bracket of the battery pack release device in this utility model.

[0028] Explanation of reference numerals in the attached figures: 1. Battery pack; 2. Upper bracket; 201. Crimp edge; 202. Roller; 3. Lower bracket; 4. Fastening bolt; 5. Pressure rod; 101. Panel; 102. Manual maintenance switch; 103. Electrical connector; 301. Left longitudinal beam; 302. Right longitudinal beam; 303. Front crossbeam; 304. Rear crossbeam. Detailed Implementation

[0029] To improve the reliability of the battery pack release device, the basic technical concept of this utility model is to use a pressure rod to press and fix the upper bracket onto the lower bracket. When the vehicle is in normal driving, the pressure rod presses against the upper bracket from top to bottom and is locked with a clamping bolt. There is no need for a complicated locking hook structure, and the fixing effect is reliable.

[0030] Based on the above concept, the present invention will be further described in detail below with reference to the embodiments.

[0031] Specific implementation of the power battery system provided by this utility model: like Figure 1 and Figure 2As shown, the power battery system provided in this embodiment includes a battery pack 1 and a release device. The battery pack 1 can supply power to the vehicle, and the release device can be used to fix the battery pack 1 to the vehicle. Specifically, the release device includes an upper bracket 2 and a lower bracket 3. The upper bracket 2 is located on top of the lower bracket 3 and can be translated relative to the lower bracket 3. The battery pack 1 can be fixed on the upper bracket 2, that is, the upper bracket 2 is used to fix the battery pack 1. The battery pack 1 can be fixed on the upper bracket 2 using existing technology, such as bolts, rivets, etc. During vehicle installation, the lower bracket 3 can be fixed to the vehicle carrier. During normal installation (vehicle installation), the upper bracket 2 can be pushed from the outside to the inside to allow the battery pack 1 to be normally connected to the vehicle, completing the installation. In case of an accident involving the battery pack 1, the upper bracket 2 can be pulled from the inside to the outside to release the connection between the battery pack 1 and the vehicle, detaching the battery pack 1, ensuring personnel safety, and minimizing the impact of the battery pack 1 on other parts of the vehicle.

[0032] To facilitate a clear and complete description of the technical solution, the horizontal and vertical directions of the release device are first defined here, such as... Figure 1 As shown, the longitudinal direction of the release device is the direction of movement of the upper bracket 2 relative to the lower bracket 3, and the lateral direction is the direction perpendicular to both the longitudinal and vertical directions. The longitudinal direction can also be referred to as the front-to-back direction, meaning that the upper bracket 2 is considered to move in the front-to-back direction. It should be emphasized that the longitudinal and lateral directions referred to here are the directions of movement of the upper bracket 2. When the power battery system is used in a vehicle, the power battery system has different installation methods and does not necessarily strictly correspond to the known longitudinal and lateral directions of a vehicle.

[0033] like Figure 1 and Figure 2 As shown, pressure rods 5 are hinged to both sides of the lower bracket 3. The pressure rods 5 can swing up and down. The function of the pressure rods 5 is to push the upper bracket 2 inward (i.e., Figure 1 After the upper bracket 2 (located on the right side) is moved into place, it is fixed. Correspondingly, the upper bracket 2 has a clamping structure on both sides of its lateral direction. The pressure rod 5 can swing downwards to press against the clamping structure, thereby fixing the upper bracket 2 from top to bottom. In simple terms, the upper bracket 2 has parts located below the pressure rod 5 at both ends of its lateral direction to cooperate with the pressure rod 5 and achieve the fixation of the upper bracket 2.

[0034] To ensure that the pressure rod 5 can be reliably pressed against the clamping structure, the release device is equipped with clamping bolts 4 for the pressure rod 5, such as... Figure 1 As shown, after the upper bracket 2 moves inward into place, the outer end of the pressure rod 5 is fixed to the lower bracket 3 by the clamping bolt 4, thereby fixing the upper bracket 2 and the lower bracket 3, and thus fixing the battery. During the tightening of the clamping bolt 4, the preload is applied to the pressure rod 5 to ensure that the pressure rod 5 can press the upper bracket 2 tightly.

[0035] Specifically, there are several ways to connect the clamping bolt 4. For example, a threaded hole can be provided on the lower bracket 3, and a smooth hole can be provided on the pressure rod 5 for the clamping bolt 4 to pass through. The clamping bolt 4 passes through the pressure rod 5 from top to bottom and is connected to the lower bracket 3. A washer can be added if necessary. Alternatively, a threaded hole can be provided on the pressure rod 5, and a smooth hole can be provided on the lower bracket 3. The clamping bolt 4 passes through the lower bracket 3 from bottom to top and is connected to the pressure rod 5. Or, smooth holes can be provided on both the pressure rod 5 and the lower bracket 3. After the clamping bolt 4 passes through the lower bracket 3 and the pressure rod 5, a lock nut is used to secure it.

[0036] As can be seen from the above analysis, during implementation, the pressure rod 5 in the release device can reliably press the upper bracket 2 onto the lower bracket 3, and the position of the upper bracket 2 in different directions can be restricted by the pressure rod 5. Unlike existing technologies, the release device does not rely on a complex locking hook structure to achieve reliable fixation. Both the clamping bolt 4 and the pressure rod 5 have superior vibration resistance, making it suitable for vehicles with strong vibrations.

[0037] Regarding how to further improve the fixing reliability of the upper bracket 2, the following preferred implementation methods are provided.

[0038] In some preferred embodiments, such as Figure 1 and Figure 2 As shown, in the longitudinal direction, the length of the pressure rod 5 is greater than the length of the upper bracket 2, and both ends of the pressure rod 5 extend beyond the longitudinal ends of the upper bracket 2. This forms a way in which the pressure rod 5 presses the upper bracket 2 down as a whole, ensuring that different positions of the upper bracket 2 in the longitudinal direction can be reliably pressed and improved in reliability.

[0039] It should be noted that the above is only a preferred embodiment. In some other embodiments, the length of the pressure rod 5 does not necessarily have to be greater than the length of the upper bracket 2. For example, a pressure-fixing structure can be set at the outer end of the upper bracket 2. Naturally, the pressure rod 5 does not need to be too long, as long as it can be pressed normally onto the pressure-fixing structure.

[0040] In some preferred embodiments, to ensure a larger contact area between the pressure rod 5 and the clamping structure, the clamping structure is composed of longitudinally extending pressing edges 201 (edges) on both sides of the upper bracket 2. Compared to embodiments with longitudinally spaced pressing edges, the continuously extending pressing edges 201 obviously allow for a larger contact area between the pressure rod 5 and the pressing edges, naturally resulting in a more stable fixing effect.

[0041] To further improve the reliability of the release device and simplify its structure, such as... Figures 1-3As shown, the lower bracket 3 of the release device is configured as a frame structure composed of steel profiles. Specifically, the lower bracket 3 includes a left longitudinal beam 301 and a right longitudinal beam 302 that extend longitudinally and are arranged laterally at intervals. A front crossbeam 303 and a rear crossbeam 304 that extend laterally and are arranged longitudinally at intervals are connected between the left longitudinal beam 301 and the right longitudinal beam 302. The left longitudinal beam 301, the right longitudinal beam 302, the front crossbeam 303, and the rear crossbeam 304 form a "U"-shaped structure. Guide components are mounted on the upper bracket 2. The left longitudinal beam 301 and the right longitudinal beam 302 are provided with guide engagement structures that cooperate with the guide components. When the upper bracket 2 is pulled outward or pushed inward, the guide structure and the guide engagement structure cooperate with each other to limit the translational direction of the upper bracket 2.

[0042] More preferably, to facilitate the movement of the upper bracket 2, the guide component mounted on the upper bracket 2 is a roller 202, such as... Figure 3 and Figure 4 As shown, guide grooves with upward openings are provided on the left longitudinal beam 301 and the right longitudinal beam 302 to guide the movement of the roller 202. The friction between the upper bracket 2 and the lower bracket 3 is rolling friction, which facilitates the movement of the upper bracket 2. At the same time, the lower bracket 3 can be directly made of channel steel, which is more convenient and less costly.

[0043] It should be noted that, as Figure 1 As shown, in order to facilitate the connection of the clamping bolt 4 and not affect the movement of the upper bracket 2 along the guide groove, a fixing seat is also connected to one side of the left longitudinal beam 301 and the right longitudinal beam 302. The clamping bolt 4 can be connected to the fixing seat to make room for the guide groove.

[0044] The connections between the longitudinal beams and transverse beams described above can be made using bolts or welding.

[0045] The battery pack 1 has a panel 101 at its inward-facing end. The panel 101 has an electrical connector 103 for connecting the battery pack 1 to the vehicle. When assembling the battery pack 1 inward, pushing the battery pack 1 inward moves the electrical connector 103 to a position where it can connect to the vehicle. Preferably, to improve assembly efficiency, the electrical connector 103 can be a plug-in connector. Correspondingly, guide posts can be provided on the panel 101. When pushing the battery pack 1, the connector smoothly mates under the guidance of the guide posts, completing the electrical connection between the battery pack 1 and the vehicle.

[0046] Considering maintenance needs, battery pack 1 is equipped with a manual maintenance switch, also known as MSD (Manual Service Disconnect). During maintenance work, the MSD switch can be manually pulled out to directly cut off the high-voltage circuit. The specific principle is existing technology and will not be described in detail here.

[0047] Unlike existing methods that integrate the manual maintenance switch 102 onto the panel 101, in the preferred embodiment, such as Figure 1 As shown, the manual maintenance switch 102 is located at the outward-facing end of the battery pack 1. This allows the MSD switch to be pulled out before pushing the battery pack 1 inward, enabling operation with the high-voltage circuit disconnected, thus improving operational safety. After the battery pack 1 is assembled in place, the MSD switch can be plugged in. Similarly, during battery pack repair or maintenance, the MSD switch can be pulled out immediately to disconnect the high-voltage circuit and reduce safety risks.

[0048] It should be noted that in other embodiments, it is also possible to set the manual maintenance switch 102 at one of the two lateral ends of the battery pack 1. This is because the battery pack 1 of some mining trucks is installed on the left and right sides of the frame. In fact, one of the two lateral ends of the battery pack 1 can be conveniently used by the operator to plug and unplug the MSD switch. In this case, the manual maintenance switch 102 can be set at one of the two lateral ends of the battery pack 1.

[0049] Specific implementation of the battery pack release device in this utility model: The implementation method of the battery pack release device is the same as the release device described in the above-described implementation method of the power battery system, and will not be described in detail here. However, it should be added that the release device can be used not only in the power battery system of a vehicle, but also in energy storage cabinets.

[0050] Specific embodiments of the vehicle provided by this utility model: The vehicle is a new energy vehicle, specifically a pure electric vehicle or a hybrid electric vehicle, which can be either a commercial vehicle or a passenger vehicle. The vehicle is equipped with a power battery system, and the specific implementation method of the power battery system is the same as that described above, so it will not be described in detail here.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery pack release device comprising a lower carriage and a translatable upper carriage, the upper carriage being configured to secure a battery pack for release and installation by translation of the upper carriage relative to the lower carriage to move the battery pack outwardly from an inner position and inwardly from an outer position, characterised in that The upper bracket moves longitudinally, and the lower bracket has hinged pressure rods that can swing up and down on both sides of its transverse direction. The upper bracket has a clamping structure on both sides of its transverse direction, and clamping bolts are provided for the pressure rods. After the upper bracket moves inward into place, the pressure rods press against the clamping structure, and the outer end of the pressure rods is fixed to the lower bracket by clamping bolts to fix the upper bracket and the lower bracket.

2. The battery pack release apparatus according to claim 1, characterized by, In the longitudinal direction, the length of the pressure bar is greater than the length of the upper bracket, and both ends of the pressure bar extend beyond the longitudinal ends of the upper bracket.

3. The battery pack release device according to claim 1 or 2, characterized by, The lower bracket includes a left longitudinal beam and a right longitudinal beam that extend longitudinally and are arranged laterally at intervals. A front crossbeam and a rear crossbeam that extend laterally and are arranged longitudinally at intervals are connected between the left and right longitudinal beams. A guide is mounted on the upper bracket, and a guide engagement structure that cooperates with the guide is provided on the left and right longitudinal beams.

4. The battery pack release device according to claim 3, characterized in that, The guide component is a roller mounted on the upper bracket. The left and right longitudinal beams have guide grooves with upward openings to guide the movement of the rollers. The guide grooves constitute a guiding fit structure.

5. The battery pack release apparatus according to claim 1 or 2, characterized by, The compression structure consists of compression edges that extend continuously along the longitudinal direction on both sides of the upper bracket.

6. A power battery system, comprising a battery pack and a release device, the release device comprising a lower bracket and an upper bracket, the battery pack being fixed on the upper bracket, the lower bracket being used to fix it on a vehicle carrier, the upper bracket being translatable relative to the lower bracket to drive the battery pack to translate from the inside out for release and from the outside in for installation, characterized in that, the definition is... The upper bracket moves longitudinally, and the lower bracket has hinged pressure rods that can swing up and down on both sides of its transverse direction. The upper bracket has a clamping structure on both sides of its transverse direction, and clamping bolts are provided for the pressure rods. After the upper bracket moves inward into place, the pressure rods press against the clamping structure, and the outer end of the pressure rods is fixed to the lower bracket by clamping bolts to fix the upper bracket and the lower bracket.

7. The power battery system of claim 6, wherein, The battery pack has a panel at one end facing inwards, which has an electrical connector for connecting the battery pack to the vehicle. A manual maintenance switch is provided at one end of the battery pack facing outwards or at one of the two lateral ends of the battery pack.

8. The power battery system according to claim 6 or 7, characterized in that, In the longitudinal direction of the release device, the length of the pressure rod is greater than the length of the upper bracket, and both ends of the pressure rod extend beyond the longitudinal ends of the upper bracket.

9. The power battery system according to claim 6 or 7, characterized in that, The lower bracket includes a left longitudinal beam and a right longitudinal beam that extend longitudinally along the release device and are arranged laterally at intervals. A front crossbeam and a rear crossbeam that extend laterally and are arranged longitudinally at intervals are connected between the left and right longitudinal beams. A guide is mounted on the upper bracket, and a guide engagement structure that cooperates with the guide is provided on the left and right longitudinal beams.

10. The power battery system of claim 9, wherein, The guide component is a roller mounted on the upper bracket. The left and right longitudinal beams have guide grooves with upward openings to guide the movement of the rollers. The guide grooves constitute a guiding fit structure.

11. The power battery system of claim 6 or 7, wherein, The compression structure consists of compression edges that extend continuously along the longitudinal direction on both sides of the upper bracket.

12. A vehicle comprising a power battery system, characterized in that The power battery system is the power battery system as described in any one of claims 6-11.

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