Battery pack, battery pack replacement device and automobile

Abstract

The utility model discloses a battery pack which comprises a battery module and further comprises a bottom plate, a battery pack body and a battery pack cover, and the battery module is fixedly connected to one side of the bottom plate; the groove bottom of the battery groove is a floor of the automobile, and two groove side walls, which are oppositely arranged, of the battery groove are formed by downward extension of thresholds on two sides of the automobile; the battery module is arranged in the battery groove, and the bottom plate covers a groove opening of the battery groove and is detachably and fixedly connected with the battery groove. The battery jar structure is formed by the vehicle body floor and the vehicle body threshold, a box body of the battery pack is omitted, the weight of the vehicle is further reduced, the overall strength of the vehicle can be improved by using the reduced weight to increase the strength of the vehicle body floor and the vehicle body threshold, and therefore the overall safety and stability of the vehicle are improved. The utility model further discloses a battery pack replacing device and an automobile with the battery pack.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile batteries, and in particular relates to a battery pack of a new energy vehicle, a replacement device for the battery pack, and a vehicle with the battery pack. Background Art

[0002] New energy vehicles have become widely popular. Improving the energy density of power batteries is crucial for improving their performance. Battery packs are a crucial component of power batteries, and lightweighting them is an effective way to increase energy density. Battery packs typically consist of a battery module and a battery case, with the battery module housed in the battery case. Currently, when considering lightweighting, weight reduction is typically implemented on the battery module or the battery case. However, this weight reduction can compromise the strength and rigidity of the battery pack itself, making it susceptible to damage.

[0003] Chinese patent CN217944883U discloses a battery pack comprising an upper cover assembly, a module assembly, and a lower case. The upper cover assembly is connected to the lower case, and the module assembly is located within the accommodation space formed by the upper cover assembly and the lower case. The upper cover assembly includes an upper cover, a seat crossbeam, and a reinforcement beam disposed thereon, and serves as a vehicle floor panel connected to the vehicle body. The lower case has at least one longitudinal beam disposed on the surface facing the upper cover assembly, with the longitudinal beam extending perpendicularly to the seat crossbeam and connected to the upper cover. This solution reduces the weight of the battery pack while maintaining its inherent strength and rigidity.

[0004] Chinese patent CN220535386U discloses a battery pack comprising a housing and a cover mounted on top of the housing. The housing is equipped with multiple battery crossbars, which divide the housing's interior into multiple accommodating chambers. The tops of the battery crossbars are provided with first protrusions that protrude toward the cover. The cover is provided with grooves that mate with the first protrusions. The grooves extend along a side away from the housing to form second protrusions, which form seat crossbars. This solution simplifies the vehicle body structure, increases the rigidity and strength of the battery crossbars, enhances the safety of the battery pack, ensures the reliability of the seats after installation, reduces vehicle weight and cost, and increases interior passenger space.

[0005] Although the above patent solves the problem that the strength and rigidity of the battery pack itself will be affected after the weight of the battery pack is reduced, the technical solution of the above patent installs the battery pack on the new energy vehicle body through several fixing feet around the battery pack. Since the battery pack needs to be fixed, the strength of the vehicle body at the connection part of the battery pack needs to be strengthened, and the battery pack box and the vehicle body are set separately, so that the battery pack is not well integrated with the vehicle body when installed on the vehicle. Utility Model Content

[0006] The purpose of the utility model is to solve the problems of poor weight reduction design of battery packs in existing new energy vehicles and weak integrity between the battery pack and the vehicle body.

[0007] In order to solve the above technical problems, an embodiment of the present utility model discloses a battery pack, including a battery module, and also including: a base plate, the battery module is fixedly connected to one side of the base plate; a battery slot, the bottom of the battery slot is the floor of the car, and the two oppositely arranged slot side walls of the battery slot are formed by the door sills on both sides of the car extending downward; the battery module is arranged in the battery slot, the base plate covers the notch of the battery slot, and is detachably fixed to the battery slot.

[0008] The above technical solution utilizes the vehicle body floor and door sills to form the battery compartment structure, eliminating the battery pack housing and thus reducing vehicle weight. This reduced weight can be used to increase the strength of the vehicle body floor and door sills, thereby enhancing the vehicle's overall strength and safety. Furthermore, the lack of a battery pack housing allows for a thinner chassis design, reducing chassis thickness and increasing ground clearance, improving vehicle maneuverability and maneuverability. This also potentially provides more usable space for passengers and cargo. Furthermore, this solution, through the integrated design of the vehicle body structure, simplifies the interface between the vehicle body and the battery pack, improving the overall integration of the vehicle, reducing the need for additional reinforcement components, facilitating assembly simplification, and further promoting lightweighting and cost control.

[0009] According to another specific embodiment of the present invention, the battery pack disclosed in the embodiment of the present invention further includes two locking parts respectively arranged on the two slot side walls; each locking part includes a locking block, which is arranged at one end of the corresponding slot side wall to form a slot, and the locking block switches between a locked state and an unlocked state, wherein when the locking block is in a locked state, one end of the locking block abuts against the other side of the bottom plate, and the bottom plate is fixedly connected to the battery slot through the locking block; when the locking block is in an unlocked state, one end of the locking block is away from the other side of the bottom plate, and the bottom plate and the battery slot are separable.

[0010] According to another specific embodiment of the present invention, the battery pack disclosed in the embodiment of the present invention, the bottom plate includes two rotating plates located on both sides of the bottom plate along the width direction, and a bottom plate main body located in the middle of the bottom plate along the width direction; each rotating plate is rotatably connected to the bottom plate main body and can rotate around the length direction of the bottom plate; the other end of the locking block is slidably connected to the corresponding groove side wall, and the locking block can slide up and down relative to the groove side wall; wherein when the locking block is in a locked state, one end of the locking block abuts against the corresponding rotating plate and presses the rotating plate against the groove side wall of the battery groove, and the rotating plate is relatively fixed to the bottom plate main body, wherein the width of the part where one end of the locking block abuts against the corresponding rotating plate is smaller than the width of the rotating plate; when the locking block slides downward relative to the groove side wall to an unlocked state, the rotating plate rotates downward around the length direction of the bottom plate to one end away from the locking block, and the bottom plate can move downward and separate from the battery groove.

[0011] According to another specific embodiment of the present invention, in the battery pack disclosed in the embodiment of the present invention, the side of the locking block is L-shaped; one end of the locking block extends along the width direction of the base plate, and the other end extends along the height direction of the corresponding groove side wall and is slidably connected to the groove side wall.

[0012] According to another specific embodiment of the present invention, in the battery pack disclosed in the embodiment of the present invention, each locking part also includes a lifting screw, and each groove side wall is provided with a hole extending along the height direction of the groove side wall; the other end of the lifting screw and the locking block are both provided in the holes of the corresponding groove side wall; wherein one end of the lifting screw is rotatably connected to the hole, and the lifting screw can rotate around its axis relative to the groove side wall; the locking block is sleeved on the outer periphery of the lifting screw and is threadedly connected to the lifting screw, and the other end of the lifting screw is exposed outside the locking block; the lifting screw rotation links the locking block to slide up and down relative to the groove side wall.

[0013] An embodiment of the present invention also discloses a battery pack replacement device for replacing the battery pack disclosed in the present invention. The battery pack replacement device includes a main body, a lifting mechanism, and a pallet. One end of the lifting mechanism is arranged on the main body, and the other end is fixedly connected to one side of the pallet. The pallet can be moved up and down relative to the main body through the lifting mechanism. The other side of the pallet is used to abut against the side of the bottom plate of the battery pack away from the battery module, and provide public support for the bottom plate and the battery module.

[0014] The above technical solution can realize the quick and easy disassembly and assembly of the battery module and the base plate, thereby reducing the time and labor costs required for battery replacement and improving service efficiency.

[0015] According to another specific embodiment of the present invention, the battery pack replacement device disclosed in the embodiment of the present invention also includes two unlocking mechanisms, each unlocking mechanism is connected to the main body, and the two unlocking mechanisms correspond to the two locking parts of the battery pack respectively, and are used to control the locking block to switch between the locked state and the unlocked state.

[0016] According to another specific embodiment of the present invention, the battery pack replacement device disclosed in the embodiment of the present invention also includes two telescopic mechanisms, one end of each telescopic mechanism is fixedly connected to one side of the support plate, and the other end can move left and right relative to the support plate; the two telescopic mechanisms respectively correspond to the two rotating plates of the battery pack, and the other end of each telescopic mechanism is used to push the corresponding rotating plate to rotate.

[0017] According to another specific embodiment of the present invention, in the battery pack replacement device disclosed in the embodiment of the present invention, each unlocking mechanism includes a slide rail, a lifting frame, a motor, and a screw rod; the slide rail is arranged at one end in the width direction of the main body, one end of the lifting frame is slidably connected to the corresponding slide rail, and the other end is fixedly connected to the motor; and the lifting frame and the motor can be lifted and lowered along with the lifting mechanism; one end of the screw rod is connected to the output shaft of the corresponding motor, and the other end is used to engage with the end of the corresponding lifting screw exposed outside the locking block; and the rotation of the motor drives the screw rod to rotate, thereby driving the lifting screw to rotate.

[0018] An embodiment of the present utility model further discloses a car, which includes the battery pack disclosed in the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic cross-sectional view of the battery pack disclosed in the present invention along the width direction of the bottom plate, wherein the locking block is in a locked state;

[0020] Figure 2 This is a schematic cross-sectional view of the battery pack disclosed in the present invention along the length direction of the bottom plate;

[0021] Figure 3 This is a bottom view structural diagram of the bottom plate of the battery pack disclosed in the present utility model;

[0022] Figure 4 This is a structural schematic diagram of the battery pack replacement device disclosed in the present utility model when used to replace the battery pack, wherein the locking block is in a locked state.

[0023] Description of reference numerals:

[0024] 1. Battery pack;

[0025] 10. Battery module; 11. Bottom plate; 111. Rotating plate; 112. Bottom plate body; 113. Hinge; 12. Battery slot; 121. Slot bottom; 122. Slot sidewall; 13. Locking portion; 131. Locking block; 132. Lifting screw;

[0026] 2. Battery pack replacement device;

[0027] 21. Main body; 22. Lifting mechanism; 23. Support plate; 24. Unlocking mechanism; 241. Slide rail; 242. Lifting frame; 243. Motor; 244. Twist rod; 25. Telescopic mechanism;

[0028] 3. Threshold. DETAILED DESCRIPTION

[0029] Lightweighting battery packs is an effective way to increase the energy density of power batteries. Existing technologies typically achieve this by reducing weight in the battery module or battery case. However, this approach compromises the strength and rigidity of the battery pack itself. Other approaches involve integrating a portion of the battery pack case cover into the vehicle body, such as by providing a protruding portion on the cover to form a seat crossbeam or using the cover as the vehicle floor. However, this requires strengthening the vehicle body at the connection point between the battery pack and the battery pack case, and the separate design of the battery pack case and the vehicle body can compromise the integrity of the battery pack after installation.

[0030] To address the aforementioned issues, the present invention discloses a battery pack that forms a battery slot structure within the vehicle body structure, serving as a battery pack enclosure. This eliminates the need for an additional battery pack enclosure, thereby reducing vehicle weight. The reduced weight can be used to increase the strength of the vehicle's floor and door sills, thereby increasing overall vehicle strength. Furthermore, a replacement device for the battery pack is also disclosed, enabling rapid replacement of the battery pack. The solution disclosed in the present invention not only successfully reduces the weight of the battery pack and strengthens the vehicle structure, but also facilitates battery pack maintenance and replacement.

[0031] In order to more clearly understand the structure and configuration of the battery pack, the battery pack replacement device, and the vehicle disclosed in the present invention, a detailed description will be given below through specific embodiments and drawings.

[0032] Example 1

[0033] The utility model discloses a battery pack, such as Figure 1 and Figure 2As shown, the battery pack 1 includes: a battery module 10, which is the basis of the battery pack 1 and mainly includes a plurality of battery cells; a base plate 11, the battery module 10 is fixedly connected to one side of the base plate 11, and the base plate 11 is specifically located below the battery module 10 and is used to support the battery module 10; a battery slot 12, the bottom 121 of the battery slot 12 is the floor of the car, and the two oppositely arranged slot side walls 122 of the battery slot 12 are formed by the door sills 3 on the left and right sides of the car extending downward; the battery module 10 is arranged in the battery slot 12, the size of the base plate 11 matches the size of the battery slot 12 and covers the notch of the battery slot 12, that is, the battery slot 12 and the base plate 11 constitute the box body of the battery pack 1, and the base plate 11 and the battery slot 12 are detachably fixedly connected. It should be noted that the battery module 10 is housed in the battery slot 12, with a gap or contact with the inner wall of the battery slot 12, but not a fixed connection. Specifically, the bottom plate 11 and the battery slot 12 can be screwed together using bolts, or they can be snapped together using corresponding structures, or they can be connected together using other auxiliary structures. Because the bottom plate 11 is located below the vehicle, this arrangement facilitates the removal of the bottom plate 11, allowing the bottom plate 11 and the battery module 10 above it to be separated from the vehicle body, thereby enabling the replacement of the battery module 10 in the battery pack 1.

[0034] The battery pack disclosed in the present invention uses the vehicle body floor and vehicle body door sill to form a battery slot structure, eliminating the battery pack box, thereby reducing the weight of the vehicle. The reduced weight can be used to increase the strength of the vehicle body floor and vehicle body door sill to increase the overall strength of the vehicle, thereby improving the overall safety and stability of the vehicle. In addition, since the battery pack box is not used, the vehicle chassis can be designed to be thinner, reducing the chassis thickness of the vehicle, increasing the vehicle's ground clearance, and improving the vehicle's passability and sports performance; at the same time, it may also open up more available space for passengers and cargo. In addition, this solution simplifies the interface between the vehicle body and the battery pack through the integrated design of the vehicle body structure, improves the overall integration of the vehicle, reduces the need for additional reinforcement components, facilitates assembly simplification, and further promotes lightweighting and cost control.

[0035] According to one specific embodiment of the present invention, Figure 1 As shown, the battery pack 1 also includes two locking portions 13 respectively arranged on the two slot side walls 122. Each locking portion 13 is arranged on one of the two sides in the width direction of the vehicle body (y direction in the figure) to assist in the fixed connection between the corresponding side of the bottom plate 11 and the battery slot 12.

[0036] Each locking portion 13 includes a locking block 131, which is arranged at one end of the slot formed by the corresponding slot side wall 122, that is, the end facing the bottom of the car. The locking block 131 switches between a locked state and an unlocked state, wherein when the locking block 131 is in the locked state, one end of the locking block 131 abuts against the other side of the bottom plate 11 (that is, the side facing the bottom of the car), and the bottom plate 11 and the battery slot 12 are fixedly connected through the locking block 131; specifically, in the locked state, the locking block 131 will give the bottom plate 11 an upward supporting force, so that the bottom plate 11 and the battery slot 12 are connected together; more specifically, the extension direction of the bottom plate 11 parallel to the width direction (y direction) of the vehicle body is defined as the width direction, and the extension direction parallel to the length direction (x direction) of the vehicle body is defined as the length direction, which can be as follows Figure 1 As shown, the two sets of locking blocks 131 are respectively abutted against the lower sides of the two ends of the bottom plate 11 in the width direction, providing an upward supporting force for the bottom plate 11, and then the upper sides of the two ends of the bottom plate 11 in the width direction are respectively abutted against the end parts of the two side groove side walls 122 of the battery slot 12 facing the bottom of the vehicle; it can also be set so that the two sets of locking blocks 131 are respectively abutted against the lower sides of the two ends of the bottom plate 11 in the width direction, providing an upward supporting force for the bottom plate 11, and then the end parts of the two ends of the bottom plate 11 in the width direction are respectively abutted against the inner walls of the two side groove side walls 122 of the battery slot 12 at the slot position; other methods can also be set, as long as the bottom plate 11 and the battery module 10 can be connected together through the locking blocks 131.

[0037] When the locking block 131 is in the unlocked state, one end of the locking block 131 is away from the other side of the base plate 11, and the base plate 11 and the battery slot 12 can be separated. Specifically, the locking block 131 is separated from the base plate 11 by an external force, thereby converting the locking block 131 to the unlocked state. The locking block 131 no longer provides an upward supporting force to the base plate 11, and the base plate 11 can also be separated from the battery slot 12. It should be noted that the external force can be human power or a force generated by a driving device such as a motor 243. Specifically, the locking block 131 can be detachably connected to the vehicle body or battery slot 12, and unlocking can be achieved by removing the locking block 131. The locking block 131 can be detachably connected to the vehicle body or battery slot 12, and unlocking can be achieved by removing the locking block 131. Preferably, the locking block 131 is rotatably connected to the vehicle body or battery slot 12 or is movable up and down, and unlocking can be achieved by rotating the locking block 131 outward or downward, or by lowering the locking block 131.

[0038] According to one specific embodiment of the present invention, Figure 1 and Figure 3As shown, the bottom plate 11 includes two rotating plates 111 located on both sides of the bottom plate 11 along the width direction, and a bottom plate body 112 located in the middle of the bottom plate 11 along the width direction; each rotating plate 111 is rotatably connected to the bottom plate body 112 and can rotate around the length direction of the bottom plate 11. Specifically, as shown in FIG. Figure 3 As shown, each rotating plate 111 is a long plate-like structure extending along the length direction of the bottom plate 11. Figure 1 and Figure 3 As shown, each rotating plate 111 and the bottom plate body 112 may be connected via a hinge 113 .

[0039] like Figure 1 As shown, the other end of the locking block 131 is slidably connected to the corresponding groove side wall 122, and the locking block 131 can slide up and down relative to the groove side wall 122; specifically, the locking block 131 and the corresponding groove side wall 122 can achieve relative sliding by setting a matching sliding structure, such as a matching slide rail 241 and a slider. When the locking block 131 is in a locked state, the end of the locking block 131 close to the center of the length direction of the car abuts against the corresponding rotating plate 111, and presses the rotating plate 111 against the groove side wall 122 of the battery slot 12, and the rotating plate 111 is relatively fixed to the bottom plate body 112, wherein the width of the portion where this end of the locking block 131 abuts against the corresponding rotating plate 111 is smaller than the width of the rotating plate 111, wherein the width direction of the locking block 131 and the width of the rotating plate 111 are both parallel to the width direction of the bottom plate 11. As shown Figure 4 As shown, when the locking block 131 slides downward relative to the slot sidewall 122 to an unlocked state, specifically, when the downward sliding distance exceeds the width of the rotating plate 111, the rotating plate 111 rotates downwardly along the length of the base plate 11 to the end away from the locking block 131 due to gravity. That is, the rotating plate 111 and the base plate body 112 are approximately 90 degrees apart, shortening the width of the base plate 11. Since the width of the portion where the locking block 131 abuts the corresponding rotating plate 111 is smaller than the width of the rotating plate 111, the locking block 131 does not hinder the downward movement of the base plate 11, allowing the base plate 11 to drive the battery module 10 to separate from the battery slot 12. It should be noted that the rotating plate 111 can be configured to rotate only within a straight line relative to the base plate body 112 and within the range of the rotating plate 111's position below the vehicle. Alternatively, the rotating range of the rotating plate 111 relative to the base plate body 112 can be unlimited. However, the rotating connection position between the rotating plate 111 and the base plate body 112 should be configured to not be located within the cavity of the battery slot 12.

[0040] By adopting the above embodiment, the structure of the long rotating plate and the liftable locking block is matched to make the load-bearing force distribution more uniform, enhance the stability of the battery installation area, and ensure that the battery can be safely and firmly installed in the car even in the absence of a traditional battery pack body.

[0041] According to one specific embodiment of the present invention, Figure 1 and Figure 4 As shown, each locking block 131 is L-shaped when viewed from the side; one end of the locking block 131 close to the center of the vehicle's length direction (x direction) extends along the width direction of the base plate 11, and the other end extends along the height direction of the corresponding groove side wall 122 and is slidably connected to the groove side wall 122.

[0042] According to one specific embodiment of the present invention, Figure 1 and Figure 4 As shown, each locking portion 13 also includes a lifting screw 132, and each groove side wall 122 is provided with a hole extending along the height direction of the groove side wall 122; the other end of the lifting screw 132 and the locking block 131 of each locking portion 13 are both provided in the hole of the corresponding groove side wall 122. The locking block 131 is connected to the lifting screw 132 at one end (upper end) and the upper end of the hole in a rotatable manner through a bearing, so that the lifting screw 132 can rotate around its axis relative to the groove side wall 122; the locking block 131 is sleeved on the outer periphery of the lifting screw 132 at one end away from the longitudinal center of the car and is threadedly connected to the lifting screw 132, that is, the locking block 131 is matched with the lifting screw 132 as a slider, so that the locking block 131 can be linked to slide up and down relative to the groove side wall 122 by rotating the lifting screw 132, thereby realizing the conversion of the locking block 131 between the locked state and the unlocked state; and the other end (lower end) of the lifting screw 132 is exposed outside the locking block 131, so that it is convenient to apply external force to the lower end of the lifting screw 132 to rotate the lifting screw 132.

[0043] With this embodiment, when the battery module 10 needs to be replaced, it is only necessary to apply external force to the lower end of the lifting screw 132 to rotate the lifting screw 132. The rotation of the lifting screw 132 drives the locking block 131 to descend, so that the locking block 131 is away from the rotating plate 111. Then, the rotating plate 111 deflects downward under the action of gravity. When the bottom plate 11 has no upward supporting force, the bottom plate 11 and the battery module 10 can be lowered and separated from the vehicle body. Figure 4 The battery pack is in the state shown, and the battery module 10 and the bottom plate 11 are disassembled. When the battery module 21 and the bottom plate 11 need to be installed, the bottom plate 11 and the battery module 10 are moved to the position where the battery slot 12 matches. The rotating plate 111 is rotated upward by external force, and external force is applied to rotate the lifting screw 132 in the opposite direction, thereby driving the locking block 131 to move upward to squeeze the rotating plate 111 to continue to deflect upward. When the rotating block moves upward to the position, the rotating plate 111 reaches a horizontal state, that is, Figure 1 The external force can be a man-made force or a power provided by a driving device such as a motor 243.

[0044] Therefore, this embodiment utilizes the cooperation of the locking block, the rotating plate, the lifting screw and other mechanisms to facilitate the quick and easy disassembly and assembly of the battery module and the base plate, thereby reducing the time and labor costs required for battery replacement.

[0045] Example 2

[0046] The present utility model also discloses a battery pack replacement device for replacing the battery pack of embodiment 1, such as Figure 4 As shown, the battery pack replacement device 2 includes a main body 21, a lifting mechanism 22, and a support plate 23; the main body 21 is the supporting body of the battery pack replacement device 2, which is used to be set on the ground. Rollers can be set at the lower end of the main body 21 to facilitate the movement of the replacement device. The lifting mechanism 22 is a mechanism that can achieve relative lifting, such as a pneumatic rod, a hydraulic rod, a lifting screw, a cross lifting mechanism, etc. One end of the lifting mechanism 22 is set on the main body 21 and is fixedly connected or slidably connected to the main body 21, and the other end is fixedly connected to one side (i.e., the lower side) of the support plate 23; the support plate 23 can move up and down relative to the main body 21 through the lifting mechanism 22, and the other side (i.e., the upper side) of the support plate 23 is used to abut against the side of the bottom plate 11 of the battery pack 1 away from the battery module 10, and provide support for the bottom plate 11 and the battery module 10.

[0047] In this embodiment, when the battery module 10 needs to be replaced, Figure 4 As shown, the vehicle body can be lifted, and the battery pack replacement device 2 can be placed under the vehicle. The lifting mechanism 22 can then be raised to drive the support plate 23 to rise and contact the bottom plate 11 of the battery pack 1, supporting the bottom plate 11. The bottom plate 11 can then be removed and separated from the battery slot 12. After separation, the lifting mechanism can be lowered to drive the support plate 23 to lower the bottom plate 11 of the battery pack 1 and the battery module 10, thereby achieving the removal of the battery module 10 from the bottom plate 11. The reverse operation can be performed to achieve the installation of the bottom plate 11 and battery module 10, which will not be repeated here.

[0048] The battery pack replacement device disclosed in the utility model can realize the rapid and easy disassembly and assembly of the battery module and the base plate, thereby reducing the time and labor cost required for battery replacement and improving service efficiency.

[0049] According to one specific embodiment of the present invention, Figure 4 As shown, the battery pack replacement device 2 also includes two unlocking mechanisms 24, each unlocking mechanism 24 is connected to the main body 21, and the two unlocking mechanisms 24 are respectively arranged to correspond to the positions and structures of the two locking parts 13 of the battery pack 1, and are used to control the locking block 131 to switch between the locked state and the unlocked state.

[0050] According to one specific embodiment of the present invention, Figure 4As shown, the battery pack replacement device 2 also includes two telescopic mechanisms 25. One end of each telescopic mechanism 25 is fixedly connected to one side of the support plate 23 in the width direction, and the other end can move left and right relative to the support plate 23. The two telescopic mechanisms 25 correspond to the two rotating plates 111 of the battery pack 1, and the other end of each telescopic mechanism 25 is used to push the corresponding rotating plate 111 upward when installing the battery module 10 and the base plate 11. Specifically, the telescopic mechanism 25 can be a telescopic rod, a pneumatic rod, etc.

[0051] According to one specific embodiment of the present invention, Figure 4 As shown, each unlocking mechanism 24 includes a slide rail 241, a lifting frame 242, a motor 243, and a screw rod 244; and the screw rod 244 and the lower end of the lifting screw 132 are set to a mutually matching locking structure, so that the screw rod 244 can drive the rotation of the lifting screw 132. For example, the lower end of the lifting screw 132 can be set to have an inner hexagonal hole or other screw hole, and the upper end of the screw rod 244 is set to a matching structure that can be inserted into the hole.

[0052] The slide rail 241 is arranged at one end of the width direction of the main body 21, that is, the two slide rails 241 are respectively arranged at both ends of the width direction of the main body 21 (parallel to the width direction of the base plate 11 when in use), one end of each lifting frame 242 is slidably connected to the corresponding slide rail 241, and the other end is fixedly connected to the corresponding motor 243; and the lifting frame 242 and the motor 243 can be raised and lowered along with the lifting mechanism 22; one end of the screw rod 244 is connected to the output shaft of the corresponding motor 243, and the other end extends upward to engage with the end of the corresponding lifting screw 132 exposed outside the locking block 131, and the motor 243 rotates to drive the screw rod 244 to rotate, driving the lifting screw 132 to rotate.

[0053] When the battery pack 1 needs to be replaced, the vehicle body is first lifted, and the battery pack replacement device 2 is placed under the vehicle. The lifting mechanism 22 is then controlled to rise, so that the support plate 23 supports the bottom plate 11. The lifting frame 242 is then driven by the electric slide rail 241 to rise. When the screw rod 244 is inserted into the screw hole at the lower end of the lifting screw 132, the motor 243 rotates to drive the lifting screw 132 to rotate. The rotation of the lifting screw 132 drives the locking block 131 to descend. The locking block 131 descends so that the locking block 131 disengages from the rotating plate 111, and then the rotating plate 111 deflects downward under the action of gravity. When the motor 243 rotates, the electric slide rail 241 follows and descends, and then the lifting mechanism 22 descends, thereby driving the battery module 21 and the bottom plate 11 to descend. Since the rotating plate 111 is deflected by gravity, the rotating plate 111 is located inside the locking block 131, and the state of the battery pack 1 is as follows. Figure 4 As shown, the lifting mechanism 22 then descends to drive the bottom plate 11 and the battery module 21 to descend, thereby realizing the disassembly of the battery module 21 and the bottom plate 11.

[0054] When the battery module 10 and the base plate 11 need to be installed, the battery module 10 and the base plate 11 are placed on the support plate 23, and the lifting mechanism 22 is controlled to lift the support plate 23, driving the base plate 11 to rise. When the base plate 11 rises into place, the telescopic mechanisms 25 on both sides are controlled to extend to push the rotating plate 111 outward, so that the rotating plate 111 rotates upward, and then the lifting mechanism 22 is controlled to descend. When the outer end of the rotating plate 111 contacts the locking block 131, the telescopic mechanism 25 is controlled to retract, and then the lifting mechanism 22 is stopped, and the motor 243 and the electric slide rail 241 are controlled to work to screw the lifting screw 132, thereby driving the locking block 131 to move upward. The locking block 131 moves upward to squeeze the rotating plate 111 to deflect upward. When the locking block 131 moves upward into place, the rotating plate 111 rotates to a horizontal state, and the state of the battery pack 1 is as follows: Figure 1 As shown, the installation is completed.

[0055] Example 3

[0056] The utility model also discloses a car, which includes the battery pack disclosed in embodiment 1.

[0057] It should be noted that, in addition to the implementation methods of the present invention described in the above-mentioned specific embodiments, those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention is introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation method. On the contrary, the purpose of introducing the utility model in conjunction with the implementation method is to cover other options or modifications that may be extended based on the claims of the present utility model. In order to disclose a deep understanding of the present utility model, the above description contains many specific details, and the present utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0058] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0059] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model 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. Therefore, they cannot be understood as a limitation on the utility model.

[0060] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0061] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above description is provided to further illustrate the present invention in conjunction with specific embodiments, and that the present invention should not be construed as being limited to these descriptions. Those skilled in the art may make various changes in form and detail, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A battery pack, comprising a battery module, characterized in that: The battery pack further includes: a bottom plate, the battery module being fixedly connected to one side of the bottom plate; A battery trough, wherein the bottom of the battery trough is the floor of the car, and the two oppositely arranged side walls of the battery trough are formed by the door sills on both sides of the car extending downward; the battery module is arranged in the battery trough, and the bottom plate covers the notch of the battery trough and is detachably fixedly connected to the battery trough.

2. The battery pack according to claim 1, wherein: The battery pack further comprises two locking portions respectively arranged on the two side walls of the groove; each locking portion comprises a locking block, the locking block being arranged at one end of the corresponding side wall of the groove forming the notch, and the locking block switching between a locked state and an unlocked state, wherein When the locking block is in a locked state, one end of the locking block abuts against the other side of the bottom plate, and the bottom plate is fixedly connected to the battery slot through the locking block; When the locking block is in an unlocked state, the one end of the locking block is away from the other side of the bottom plate, and the bottom plate and the battery slot are separable.

3. The battery pack according to claim 2, wherein: The bottom plate includes two rotating plates located on both sides of the bottom plate in the width direction, and a bottom plate body located in the middle of the bottom plate in the width direction; each rotating plate is rotatably connected to the bottom plate body and can rotate around the length direction of the bottom plate; The other end of the locking block is slidably connected to the corresponding groove side wall, and the locking block can slide up and down relative to the groove side wall; in When the locking block is in the locked state, the one end of the locking block abuts against the corresponding rotating plate and presses the rotating plate against the side wall of the battery slot, and the rotating plate is relatively fixed to the bottom plate body, wherein the width of the portion where the one end of the locking block abuts against the corresponding rotating plate is smaller than the width of the rotating plate; When the locking block slides downward relative to the slot side wall to the unlocked state, the rotating plate rotates downward around the length direction of the bottom plate to the end away from the locking block, and the bottom plate can move downward to separate from the battery slot.

4. The battery pack according to claim 3, wherein: The side surface of the locking block is L-shaped; one end of the locking block extends along the width direction of the bottom plate, and the other end extends along the height direction of the corresponding groove side wall and is slidably connected to the groove side wall.

5. The battery pack according to claim 4, wherein: Each of the locking parts further comprises a lifting screw, and each of the groove side walls is provided with a hole extending in the height direction of the groove side wall; the other ends of the lifting screw and the locking block are both provided in the holes of the corresponding groove side walls; wherein One end of the lifting screw is rotatably connected to the hole, and the lifting screw can rotate around its axis relative to the side wall of the groove; the locking block is sleeved on the outer periphery of the lifting screw and is threadedly connected to the lifting screw, and the other end of the lifting screw is exposed outside the locking block; The lifting screw is rotated to link the locking block to slide up and down relative to the groove side wall.

6. A battery pack replacement device, characterized in that: Used to replace the battery pack according to any one of claims 1 to 5, the battery pack replacement device includes a main body, a lifting mechanism, and a tray; one end of the lifting mechanism is arranged on the main body, and the other end is fixedly connected to one side of the tray; and the tray can be moved up and down relative to the main body through the lifting mechanism, and the other side of the tray is used to abut against the side of the bottom plate of the battery pack away from the battery module, and provide support for the bottom plate and the battery module.

7. The battery pack replacement device according to claim 6, wherein: The battery pack replacement device also includes two unlocking mechanisms, each of which is connected to the body, and the two unlocking mechanisms respectively correspond to the two locking parts of the battery pack, and are used to control the locking block to switch between a locked state and an unlocked state.

8. The battery pack replacement device according to claim 7, wherein: The battery pack replacement device also includes two telescopic mechanisms, one end of each of the telescopic mechanisms is fixedly connected to one side of the support plate, and the other end can move left and right relative to the support plate; the two telescopic mechanisms correspond to the two rotating plates of the battery pack respectively, and the other end of each telescopic mechanism is used to push the corresponding rotating plate to rotate.

9. The battery pack replacement device according to claim 8, wherein: Each of the unlocking mechanisms includes a slide rail, a lifting frame, a motor, and a screw rod; wherein The slide rail is arranged at one end in the width direction of the body, one end of the lifting frame is slidably connected to the corresponding slide rail, and the other end is fixedly connected to the motor; and the lifting frame and the motor can be raised and lowered along with the lifting mechanism; one end of the screw rod is connected to the output shaft of the corresponding motor, and the other end is used to engage with the end of the corresponding lifting screw exposed outside the locking block; and the rotation of the motor drives the screw rod to rotate, thereby driving the lifting screw to rotate.

10. An automobile, characterized in that: The automobile comprises the battery pack according to any one of claims 1 to 5.

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