WO2017067440A1

WO2017067440A1 - Electric vehicle battery pack swap control system and method

Info

Publication number: WO2017067440A1
Application number: PCT/CN2016/102416
Authority: WO
Inventors: 陆中奎; 邵桂欣; 魏跃远; 代康伟
Original assignee: 北京新能源汽车股份有限公司
Priority date: 2015-10-19
Filing date: 2016-10-18
Publication date: 2017-04-27
Also published as: CN105216645A; MX2018004736A; CN105216645B

Abstract

Disclosed are an electric vehicle battery pack swap control system and method, the system comprising: a battery pack swap device (1000), said device (1000) comprising a battery pack lock mechanism (100) and a tray lifting mechanism (110); a battery manager (2000); and a vehicle controller (3000). On the basis of a battery pack swap signal, a battery pack locking signal and vehicle state information, the controller (3000) generates a corresponding control command then sends said command to the battery manager (2000) to control the high voltage power-up or power-down of the electric vehicle, so as to control the battery pack swap process. The present system monitors the electric vehicle battery changing process and fully automates battery swapping, thereby improving battery swap process efficiency and safety.

Description

Battery pack quick change control system and method for electric vehicle

Cross-reference to related applications

The present application is based on a Chinese patent application No. 20151068038, filed on Jan. 19, 2015, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present invention relates to the field of electric vehicle technology, and in particular, to a battery pack quick change control system and method for an electric vehicle.

Background technique

Based on environmental, energy and technological development factors, new energy vehicles are the trend of current and future automotive development, of which pure electric vehicles are mainstream products. Due to the limitation of the space of the electric vehicle and the low energy density of the battery system itself, the current charging range of the pure electric vehicle cannot meet the long-distance driving of the vehicle. In order to solve this problem, a variety of pure electric vehicle battery system quick change schemes have emerged to meet the needs of the rapid replacement battery system to ensure the driving range of electric vehicles.

However, the current rapid replacement of battery systems is mostly for the mechanical mechanism of the quick change mechanism (including quick change implementation equipment and quick change control system, battery system and vehicle chassis); vehicle, battery system and quick change mechanism There is no or little information interaction between the drivers and the power-exchange operators themselves to supervise the power-changing process, resulting in high staff consumption and low efficiency. If the supervisors have low responsibility, the supervision is not in place, and the vehicle system is in place. If the process of changing the power cannot be monitored, there is a phenomenon that the whole vehicle is forced to change with high-voltage power, and there are safety hazards such as high-voltage short-circuit, which may damage personal safety and equipment safety.

Summary of the invention

The present invention aims to solve at least one of the technical problems in the related art to some extent. To this end, an object of the present invention is to provide a battery pack quick change control system for an electric vehicle, which improves the efficiency and safety of the battery quick change process, thereby greatly improving the user experience.

A second object of the present invention is to provide a battery pack quick change control method for an electric vehicle.

In order to achieve the above object, a battery pack quick change control system for an electric vehicle according to the first aspect of the present invention includes: a battery pack quick change device, the battery pack quick change device including a battery pack lock mechanism and a tray jacking mechanism; a controller, and the vehicle controller is respectively connected to the battery pack locking mechanism and the tray jacking mechanism to obtain a battery pack quick change signal and a battery pack lock signal, the vehicle controller And communicating with the battery manager, the vehicle controller generates a corresponding control instruction according to the battery pack quick change signal, the battery pack lock signal, and status information of the electric vehicle, and the corresponding control instruction Control instructions are sent to the battery manager to power up or down the electric vehicle Electrical control to control the battery pack quick change process.

According to the battery pack quick change control system of the electric vehicle according to the embodiment of the invention, the vehicle controller and the battery pack quick change device perform information interaction to obtain the battery pack quick change signal and the battery pack lock signal, and according to the battery pack quick change signal The battery pack lockout signal and the state information of the electric vehicle generate corresponding control commands, and send corresponding control commands to the battery manager to perform high voltage power-on or power-off control on the electric vehicle to control the battery pack quick change process. The control system improves the efficiency and safety of the battery quick change process, thereby greatly improving the user experience.

In an embodiment of the invention, wherein when the battery pack locking mechanism sends an unlocking signal to the vehicle controller and the tray jacking mechanism sends a jacking signal to the vehicle controller, The vehicle controller acquires the battery pack quick change signal; when the battery pack lock mechanism issues a lock signal to the vehicle controller, the vehicle controller acquires the battery pack lock signal.

In an embodiment of the present invention, the apparatus further includes a meter, wherein the meter communicates with the vehicle controller, wherein the vehicle is when the vehicle controller acquires the battery pack quick change signal The controller determines whether the vehicle speed of the electric vehicle is 0. If the vehicle speed is 0, the first prompt information is sent to the meter to prompt the user to put the vehicle key in the OFF position; the vehicle controller also determines Whether the car key is in the OFF position, if yes, sending a power-off control command to the battery manager to perform high-voltage power-off control on the electric vehicle, and if not, after delaying the first preset time A power down control command is sent to the battery manager to perform high voltage power down control of the electric vehicle.

In an embodiment of the present invention, when the vehicle controller does not acquire the battery pack quick change signal and does not acquire the battery pack lock signal, if the vehicle controller determines the electric power When the automobile is in the driving mode, sending the second prompt information to the meter to prompt the user to stop, and sending a power-off control command to the battery manager to delay the electric power after delaying the second preset time The vehicle performs high-voltage power-off control; if the vehicle controller determines that the pure electric vehicle is in the driving mode, the power-on control command is prohibited from being sent to the battery manager to prohibit the electric vehicle from performing high voltage Powering up, and sending a third prompt message to the meter to prompt the user to check the installation of the power battery.

In an embodiment of the present invention, when the vehicle controller does not acquire the battery pack quick change signal, when the battery pack lock signal is acquired, if the vehicle controller determines the electric vehicle In the driving mode, controlling the electric vehicle to maintain the driving mode; if the vehicle controller determines that the electric vehicle is in a power-on process, the vehicle controller sends a power-on control command to the battery The manager performs high voltage power-on control on the electric vehicle.

In an embodiment of the present invention, the battery pack locking mechanism includes: a plurality of locking blocks, the locking block is provided with a locking groove; a plurality of locking pins, the plurality of locking pins Corresponding to the plurality of locking blocks respectively, at least a part of the locking pin is located in a locking groove of the corresponding locking block; and a linkage structure, the linkage structure is connected to the plurality of locking pins, and the The linkage structure is configured to enable the plurality of latches to act synchronously such that each of the latches can open or close the corresponding latching slot.

In one embodiment of the invention, the linkage structure is configured to enable the plurality of locking pins to pivot with respective pivot axes of each of the locking pins.

In order to achieve the above object, a battery pack quick change control method for an electric vehicle according to a second aspect of the present invention, the battery pack quick change control system of the electric vehicle includes a battery pack quick change device, a battery manager, and a vehicle controller, The battery pack quick change device includes a battery pack lock mechanism and a tray jacking mechanism, and the battery pack quick change control method includes the following steps: the whole vehicle controller and the battery pack lock mechanism and the tray jacking mechanism respectively Communicating to obtain a battery pack quick change signal and a battery pack lock signal; the vehicle controller generates corresponding control according to the battery pack quick change signal, the battery pack lock signal, and the state information of the electric vehicle And the vehicle controller sends the corresponding control command to the battery manager to perform high voltage power-on or power-off control on the electric vehicle to control the battery pack quick change process.

According to the battery pack quick change control method of the electric vehicle according to the embodiment of the invention, the vehicle controller and the battery pack quick change device perform information exchange to obtain the battery pack quick change signal and the battery pack lock signal, and according to the battery pack quick change signal The battery pack lockout signal and the state information of the electric vehicle generate corresponding control commands, and send corresponding control commands to the battery manager to perform high voltage power-on or power-off control on the electric vehicle to control the battery pack quick change process. The control method improves the efficiency and security of the battery quick change process, thereby greatly improving the user experience.

In an embodiment of the present invention, the electric vehicle further includes a meter, the meter is in communication with the vehicle controller, wherein when the vehicle controller acquires the battery pack quick change signal, The vehicle controller determines whether the vehicle speed of the electric vehicle is 0, and if the vehicle speed is 0, sends a first prompt information to the meter to prompt the user to place the vehicle key in the OFF position; The controller further determines whether the car key is in an OFF position, and if so, sends a power-off control command to the battery manager to perform high-voltage power-off control on the electric vehicle, and if not, delays first A power down control command is sent to the battery manager after a preset time to perform high voltage power down control of the electric vehicle.

In an embodiment of the present invention, the method further includes: when the vehicle controller does not obtain the battery pack quick change signal and does not acquire the battery pack lock signal, if the vehicle controller determines When the electric vehicle is in the driving mode, sending the second prompt information to the meter to prompt the user to stop, and sending a power-off control command to the battery manager after delaying the second preset time to The electric vehicle performs high-voltage power-off control; if the vehicle controller determines that the pure electric vehicle is in a driving mode, the power-on control command is prohibited from being sent to the battery manager to prohibit the electric The vehicle performs high voltage power-on and sends a third prompt message to the meter to prompt the user to check the installation of the power battery.

In an embodiment of the present invention, the method further includes: when the vehicle controller does not obtain the battery pack quick change signal, when the battery pack lock signal is acquired, if the vehicle controller determines When the electric vehicle is in the running mode, the electric vehicle is controlled to maintain the driving mode; if the vehicle controller determines that the electric vehicle is in the power-on process, the vehicle controller sends a power-on control command to The battery manager performs high voltage power-on control on the electric vehicle.

DRAWINGS

1 is a schematic view showing the position of a battery pack locking mechanism according to an embodiment of the present invention;

2 is a schematic structural view of a battery pack locking mechanism according to an embodiment of the present invention, and the locking pin closes the locking groove;

3 is a schematic structural view of a battery pack locking mechanism according to an embodiment of the present invention, and the lock pin opens the locking groove;

4 is a schematic structural view of a locking mechanism and a battery pack according to an embodiment of the present invention;

5 is a block diagram showing a battery pack quick change control system for an electric vehicle according to an embodiment of the present invention;

6 is a block diagram showing a battery pack quick change control system for an electric vehicle according to another embodiment of the present invention;

7 is a flow chart of a battery pack quick change control method for an electric vehicle according to an embodiment of the present invention;

8 is a flow chart of a battery pack quick change control method for an electric vehicle according to an embodiment of the present invention.

Reference mark:

Battery pack quick change device 1000, lock mechanism 100, lock block 10, lock groove 11, inlet section 12, lock pin 20, lock pin pivoting structure 21, lock pin connection structure 22, lock tongue portion 23, linkage structure 30, the buffer structure 40, the contact block 50, the frame body 200, the support block 300, the battery pack 400;

The battery pack quick change device 1000, the battery manager 2000, the vehicle controller 3000, the meter 4000, the battery pack lock mechanism 100, and the tray jacking mechanism 110.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

Before describing the battery pack quick change control system and method of the electric vehicle proposed by the embodiment of the present invention, the lock mechanism 100 for the battery pack quick change device will be first introduced.

As shown in FIG. 1, the locking mechanism 100 may be disposed on the inner side of the frame body 200 of the battery pack quick change device 1000.

2 and 3, the locking mechanism 100 of some embodiments of the present invention may include a plurality of locking blocks 10, a plurality of locking pins 20, and a linkage structure 30.

As shown in FIG. 2 and FIG. 3, the locking block 10 is provided with a locking groove 11, and a battery pack mounting post (not shown) provided on the battery pack can fit in the locking groove 11. The plurality of locking pins 20 respectively correspond to the plurality of locking blocks 10, that is, the number of the locking pins 20 and the locking block 10 are identical. For example, referring to the example of FIG. 2, the locking pin 20 and the locking block 10 are both 3, but not limited to this.

At least a portion of the locking pin 20 is located within the locking slot 11 of the corresponding locking block 10. In the example of Figures 2 and 3, the locking pin 20 is partially within the locking slot 11 and the other portion is within the locking slot 11. Extending out. The linkage structure 30 is coupled to the plurality of locking pins 20, and the linkage structure 30 is configured to enable the plurality of locking pins 20 to act synchronously such that each locking pin 20 can open or close the corresponding locking slot 11, in other words, through the linkage structure 30. The plurality of locking pins 20 are driven to open or close the corresponding locking slots 11 in synchronization, so that the switching of the states of the plurality of locking slots 11 can be realized by operating a linkage structure 30, that is, the locking mechanism 100 according to the embodiment of the present invention. The plurality of locking pins 20 are operated by a linkage structure 30, which greatly simplifies the construction and the volume of the locking mechanism 100, and is easy to operate.

Wherein, the battery pack quick change device 1000 can be applied to a vehicle (for example, an electric vehicle), the battery pack quick change device 1000 can be used for quickly replacing the battery pack 400, and the lock mechanism 100 can lock the battery pack 400 to install the battery pack 400. On the battery pack quick change device 1000, the battery pack 400 can be used as a power source for the vehicle. Wherein, as described above, the battery pack 400 is provided with a battery pack mounting post (not shown), and the lock mechanism 100 locks the battery pack mounting post by locking the battery pack mounting post to the lock slot. The limit is implemented within 20 so that the battery pack 400 can be mounted on the battery pack quick change device 1000.

In accordance with an embodiment of the present invention, the linkage structure 30 can be configured to enable the plurality of locking pins 20 to pivot with respective pivot axes of each of the locking pins 20. That is, when the linkage structure 30 drives the plurality of lock pins 20 to pivotally move about the respective pivot axes, the lock pin 20 can open or close the corresponding lock groove 11.

Wherein, when the linkage structure 30 drives the locking pin 20 to open the locking groove 11 , the battery pack mounting post can enter the locking groove 11 or be disengaged from the locking groove 11 . As shown in FIG. 4, when the linkage structure 30 drives the lock pin 20 to close the lock groove 11, the lock pin 20 can define the battery pack mounting post in the lock groove 11, so that the battery pack 400 is mounted on the battery pack quick change device. 1000. When the battery pack mounting post enters the lock groove 11, the lock pin 20 can start to close the lock groove 11, which can make the lock mechanism 100 lock the process quickly.

In addition, it should be noted that the portion of the lock pin 20 that opens or closes the lock groove 11 may be a portion that protrudes into the lock groove 11. Specifically, as shown in FIGS. 2 and 3, the lock pin 20 has a lock tongue portion 23 The locking tongue 23 pivots about the pivot axis with the locking pin 20 to open or close the corresponding locking groove 11. The lock tongue portion 23 is provided at the lock groove 11, and after the battery pack mounting post projects into the lock groove 11, the lock tongue portion 23 closes the lock groove 11 to mount the battery pack 400 on the battery pack quick change device 1000.

As described above, the linkage structure 30 is coupled to the plurality of locking pins 20 such that the linkage structure 30 drives the plurality of locking pins 20 to simultaneously close or open the corresponding locking slots 11, that is, the locking mechanism 100 can simultaneously lock more The battery pack mounting post allows the battery pack 400 to be reliably mounted on the battery pack quick change device 1000.

Similarly, when the battery pack quick change device 1000 replaces the battery pack 400 (ie, the lock mechanism 100 unlocks the battery pack 400), the linkage structure 30 drives the lock pin 20 to open the lock slot 11, and the battery pack mounting post can be disengaged from the lock slot 11 Thus, the battery pack 400 can be detached from the battery pack quick change device 1000. Thereby, the battery pack 400 is easily disassembled.

The lock mechanism 100 for the battery pack quick change device 1000 according to the embodiment of the present invention can realize that the plurality of lock pins 20 simultaneously close or open the corresponding lock grooves 11 by providing the linkage structure 30, and the lock mechanism 100 can be Simultaneously locking a plurality of battery pack mounting posts allows the battery pack 400 to be reliably mounted on the battery pack quick change device 1000. Moreover, the locking mechanism 100 has a simple structure and a fast locking process.

In some examples of the present invention, as shown in FIG. 2 and FIG. 3, the locking mechanism 100 may further include: a locking pin pivoting structure 21, each of which is provided with a locking pin pivoting structure 21, a locking pin 20 is rotatably sleeved on the corresponding locking pin pivoting structure 21, wherein the central axis of the locking pin pivoting structure 21 constitutes the aforementioned pivot axis. In other words, when the lock pin 20 opens or closes the lock groove 11, the lock pin 20 pivotally moves about the central axis of the lock pin pivoting structure 21 (ie, the pivot axis). Alternatively, the lock pin pivoting structure 21 may be a rivet that mounts one end of the locking pin 20 on the locking block 10 and the locking pin 20 is pivotally movable about a central axis of the rivet. Thereby, the locking mechanism 100 has a simple structure, and the locking pin 20 and the locking block 10 are reliably connected.

As shown in FIG. 2 and FIG. 3, the locking mechanism 100 may further include: a plurality of locking pin connecting structures 22 respectively corresponding to the plurality of locking pins 20, and each locking pin 20 passes corresponding The lock pin connection structure 22 is coupled to the linkage structure 30 such that the linkage structure 30 pivots the lock pin 20 about the pivot axis through the lock pin connection structure 22. Alternatively, the lock pin connection structure 22 may be a rivet that can mount the other end of the lock pin 20 on the linkage structure 30, wherein the lock pin 20 can be rotationally moved relative to the linkage structure 30. Thereby, the locking mechanism 100 has a simple structure, and the locking pin 20 and the linkage structure 30 are reliably connected.

Further, a locking pin receiving groove (not shown) may be disposed on the locking block 10, a part of the locking pin 20 is disposed in the locking pin receiving groove, and another part of the locking pin 20 extends upward from the locking pin receiving groove Out, and the upwardly extending portion of the locking pin 20 can be coupled to the linkage structure 30 by the locking pin connection structure 22. It can be understood that the locking pin 20 can be connected to the linkage structure 30 through the locking pin receiving groove. By providing the lock pin receiving groove, it is possible to facilitate the rotation of the lock pin 20 about its own pivot axis.

In some specific examples of the present invention, as shown in FIG. 2 and FIG. 3, the locking block 10 may further be provided with an inlet section 12, the inlet section 12 communicates with the locking groove 11, and the locking pin 20 has a locking tongue portion 23, a lock The tongue 23 is disposed at the interface of the locking groove 11 and the inlet section 12, and the locking tongue 23 is used to open or close the locking groove 11. In other words, the tongue portion 23 of the locking pin 20 can communicate the locking groove 11 and the inlet section 12, as well as the inlet section 12 and the locking groove 11. When the locking tongue portion 23 opens the locking groove 11, the battery pack mounting post can enter the locking groove 11 through the inlet section 12, and when the locking tongue portion 23 closes the locking groove 11, the battery pack mounting post is limited to the locking Inside the slot 11.

Optionally, as shown in FIG. 3, the locking groove 11 and the inlet section 12 are configured as an inverted "L"-shaped groove structure, and are imported. The segment 12 is connected below one side of the locking groove 11 and open downward. It can be understood that the inlet section 12 which is open downward can facilitate the battery pack mounting column to enter the inlet section 12 from below and into the locking groove 11, and can facilitate the battery pack mounting post to be disengaged from the locking slot 11 and the inlet. The segment 12, that is, the inlet section 12 that is open toward the lower side can facilitate the installation and disassembly of the battery pack 400, can improve the efficiency of installing and disassembling the battery pack 400 of the battery pack quick change device 1000, improve the performance of the vehicle, and improve the user experience. .

It should be noted that the locking groove 11 and the inlet section 12 may be defined by the structure of the locking block 10. Alternatively, the locking block 10 may be an integrally formed piece. Thereby, the lock block 10 has a simple and reliable structure and is low in manufacturing cost. Moreover, the locking block 10 can be fixedly attached to the bezel body 200 by rivets. The number of rivets can be set according to actual production and installation needs.

Preferably, as shown in FIG. 3, the width of the lower end opening of the inlet section 12 may be greater than the width of the remainder of the inlet section 12. Thus, the width of the lower end opening of the inlet section 12 can be greater than the width of the upper end opening of the inlet section 12. When the battery pack quick change device 1000 is installed with the battery pack 400, the inlet section 12 having a larger width of the lower end opening can be installed on the battery pack. The column can play a guiding role to facilitate the entry of the battery pack mounting post into the inlet section 12, thereby shortening the time for the battery pack mounting post to enter the lock slot 11, and improving the installation efficiency of the battery pack quick change device 1000. Specifically, as shown in FIGS. 2 and 3, the two side walls of the lock block 10 constituting the inlet section 12 may be generally distributed in an "eight" shape.

In some specific examples of the invention, at least a portion of the slot wall of the locking slot 11 may be provided with a cushioning structure 40. Optionally, the buffer structure 40 may be disposed on the groove wall of the locking groove 11 corresponding to the locking tongue portion 23, but is not limited thereto, and the buffer structure 40 may also be disposed adjacent to the locking tongue portion 23. The groove wall of the locking groove 11 is. It should be noted that during the running of the vehicle, the battery pack mounting column moves in the locking slot 11 due to the driver's operation (such as acceleration or deceleration) or the road surface, and the battery pack mounting post and the locking slot 11 The side walls collide and rub. By providing the buffer structure 40, the collision and friction between the battery pack mounting post and the groove wall of the lock groove 11 during the movement of the vehicle can be alleviated, and the damage degree of the battery pack mounting post and the lock block 10 can be reduced, thereby extending The service life of the locking block 10 and the service life of the battery pack mounting post. Preferably, the buffer structure 40 may be a rubber mat, but is not limited thereto.

According to an embodiment of the present invention, as shown in FIG. 2, the locking mechanism 100 may further include: a contact block 50 disposed on the linkage structure 30, wherein the quick change device (not shown) is adapted to be in contact The block 50 drives the linkage structure 30 to drive the plurality of lock pins 20 to operate synchronously. The quick change device can transport the battery pack 400 to be installed to the battery pack quick change device 1000, wherein the quick change device can be provided with a telescopic structure for driving the contact block 50.

When the battery pack 400 is installed, the quick change device drives the battery pack 400 to move from the bottom up and gradually approach the battery pack quick change device 1000. When the battery pack mounting post enters the inlet section 12 or approaches the lock tongue portion 23 of the lock pin 20, it is fast. The telescopic structure on the changing device can drive the linkage structure 30 to move upwards, so that the linkage structure 30 can drive the plurality of locking pins 20 to pivot in the positive direction about the respective pivot axes (set the locking pin 20 when the locking slot 11 is opened) The pivoting direction of 20 is the positive direction), the locking pin 20 opens the corresponding locking slot 11, the battery pack mounting post enters the corresponding locking slot 11, and the battery pack mounting post can be It moves from the back to the inside in the lock groove 11. Moreover, when the battery pack mounting post enters the locking groove 11 and contacts the buffer structure 40, the telescopic structure on the quick change device can be retracted downward, that is, the telescopic structure no longer stops against the contact block 50, thereby The contact block 50 and the linkage structure 30 can drive the plurality of locking pins 20 to pivot in opposite directions about the respective pivot axes (the pivoting direction of the locking pin 20 when the locking pin 20 closes the locking groove 11 is opposite), the lock The locking tongue portion 23 of the pin 20 closes the locking groove 11 to define the battery pack mounting post within the locking groove 11, so that the process of mounting the battery pack 400 on the battery pack quick change device 1000 can be completed.

Optionally, the contact block 50 and the linkage structure 30 may be a separate structure, and the contact block 50 may be integrally disposed under the linkage structure 30, and may be located between the two locking blocks 10, so that the locking mechanism 100 can be reduced. The space of the battery pack 400 increases the space utilization rate of the battery pack quick change device 1000. Wherein, optionally, the height of the contact block 50 may be less than or equal to the height of the locking block 10, so that the arrangement of the contact block 50 may be facilitated, but the invention is not limited thereto.

Thus, by providing the contact block 50, the process of installing the column top unlocking pin 20 into the locking groove 11 can be omitted, that is, the battery pack mounting post does not need to be in contact with the locking tongue portion 23 of the locking pin 20 to enter. The locking groove 11 is inside, so that the installation difficulty of the battery pack 400 can be reduced, the efficiency of installing the battery pack 400 of the battery pack quick change device 1000 can be improved, and the service life of the battery pack mounting post and the lock pin 20 can be prolonged.

According to an embodiment of the invention, the linkage structure 30 can be constructed as an elongated linkage. thus. The plurality of lock pins 20 and the plurality of lock blocks 10 may be spaced apart in the longitudinal direction of the elongated link bars. Alternatively, the linkage bar can be located above the plurality of locking blocks 10. When the lock pin 20 closes the lock groove 11, the lock pin 20 can quickly close the lock groove 11 under the gravity of the lock pin 20 and the linkage lever, so that the lock mechanism 100 can be quickly locked. Moreover, when the locking pin 20 closes the locking groove 11, the interlocking rods are stopped on the upper surfaces of the plurality of locking blocks 10, at least to some extent, the battery pack mounting post can be prevented from opening the locking pin 20 to open the locking groove 11. Further, the locking reliability of the lock mechanism 100 can be improved.

Alternatively, as shown in FIG. 2, the thickness H1 of the locking block 10 may be 10 mm to 15 mm. Preferably, the thickness H1 of the locking block 10 may be 15 mm. Thus, when the lock mechanism 100 is mounted on the inner surface of the bezel body 200, the occupied space is small, so that the battery pack 400 can be maximized in design and the mileage of the vehicle can be maximized.

Optionally, the locking mechanism 100 is mounted on the frame body 200 of the quick change device, and the gap between the linkage structure 30 and the frame body 200 is 2 mm to 3 mm. Thereby, the contact of the interlocking structure 30 with the bezel body 200 can be effectively prevented, so that the interlocking structure 30 can be freely moved, so that the locking mechanism 100 is locked and reliable. Preferably, the gap between the linkage structure 30 and the bezel body 200 may be 2.4 mm.

Based on the lock mechanism 100 for a battery pack quick change device described in the above embodiment, a battery pack quick change control system and method for an electric vehicle according to an embodiment of the present invention will be described below with reference to FIGS. 5-8.

FIG. 5 is a block schematic diagram of a battery pack quick change control system for an electric vehicle according to an embodiment of the present invention. As shown in FIG. 5, a battery pack quick change control system for an electric vehicle according to an embodiment of the present invention includes: a battery pack quick change device 1000, a battery manager 2000, and a vehicle controller 3000, wherein the battery pack quick change device 1000 includes Battery pack locking mechanism 100 And a tray jacking mechanism 110.

The vehicle controller 3000 is respectively connected to the battery pack locking mechanism 100 and the tray jacking mechanism 110 to obtain a battery pack quick change signal and a battery pack lock signal, and the vehicle controller 3000 also communicates with the battery manager 2000. The vehicle controller 3000 generates a corresponding control command according to the battery pack quick change signal, the battery pack lock signal and the state information of the electric vehicle, and sends a corresponding control command to the battery manager 2000 to perform high voltage power-on or power-off of the electric vehicle. Control to control the battery pack quick change process.

In an embodiment of the present invention, when the battery pack locking mechanism 100 issues an unlocking signal to the vehicle controller 3000 and the tray jacking mechanism 110 sends a jacking signal to the vehicle controller 3000, the vehicle controller 3000 The battery pack quick change signal is acquired; when the battery pack lock mechanism 100 issues a lock signal to the vehicle controller 3000, the vehicle controller 3000 acquires the battery pack lock signal.

Specifically, when the battery pack locking mechanism 100 issues an unlocking signal to the vehicle controller 3000 and the tray jacking mechanism 110 sends a jacking signal to the vehicle controller 3000, the vehicle controller 3000 acquires a battery pack quick change signal, This is the battery pack quick change signal at this time is true. Conversely, when the battery pack quick change signal is not true, the vehicle controller 3000 does not obtain the battery pack quick change signal.

Similarly, when the battery pack locking mechanism 100 issues a lock signal to the vehicle controller 3000, the vehicle controller 3000 acquires the battery pack lock signal, that is, the battery pack lock signal is true at this time. Conversely, when the battery pack lockout signal is not true, the vehicle controller 3000 does not acquire the battery pack lockout signal.

In an embodiment of the present invention, as shown in FIG. 6, the battery pack quick change control system further includes a meter 4000, and the meter 4000 communicates with the vehicle controller 3000, wherein when the vehicle controller 3000 obtains the battery pack When the signal is changed quickly, the vehicle controller 3000 determines whether the vehicle speed of the electric vehicle is 0. If the vehicle speed is 0, the first prompt information is sent to the meter 4000 to prompt the user to put the vehicle key in the OFF position; the vehicle controller 3000 It is further determined whether the car key is in the OFF position, and if yes, the power-off control command is sent to the battery manager 2000 to perform high-voltage power-off control on the electric vehicle, and if not, the power is turned off after the first preset time delay. Control commands are sent to the battery manager 2000 to perform high voltage power down control of the electric vehicle.

Specifically, when the user needs to replace the battery pack of the electric vehicle, the battery pack quick change device can disassemble and replace the battery pack to realize a quick change of the pure electric vehicle power battery.

More specifically, first, the electric vehicle enters the quick change station in the state of starting the quick change. If the vehicle controller 3000 obtains the battery pack quick change signal, that is, the battery pack quick change signal is true, then the vehicle controller 3000 further detects whether the vehicle speed is 0. If the vehicle speed is 0, the first prompt information is sent to the meter 4000 to prompt the user to put the vehicle key in the OFF position. For example, through the meter 4000, “the quick change is about to enter, please use the key. In the OFF position, if the vehicle speed is not 0, there is no operation. If the user sees the first prompt information on the meter 4000, the key is placed in the OFF position, and the vehicle controller 3000 enters the power-off process when the key is already placed in the OFF position, and completes the power-off; if the vehicle controller 3000 at After the first prompt message is sent, it is judged that the key is still not in the OFF position, and then waits, and in the first preset time, the state of the key is still detected, and the first prompt information is continuously output to the meter 4000, if the waiting time If the first preset time is exceeded, the power-off process is directly entered and the power is turned off.

In an embodiment of the present invention, when the vehicle controller 3000 does not acquire the battery pack quick change signal and does not acquire the battery pack lock signal, if the vehicle controller 3000 determines that the electric vehicle is in the running mode, the first The second prompt information is sent to the meter 4000 to prompt the user to stop, and after the second preset time delay, the power-off control command is sent to the battery manager 2000 to perform high-voltage power-off control on the electric vehicle; if the vehicle controller 3000 determines When the pure electric vehicle is in the driving mode of the driving mode, the power-on control command is prohibited from being sent to the battery manager 2000 to prohibit the electric vehicle from performing high-voltage power-on, and the third prompt information is sent to the meter 4000 to prompt the user to check the power battery. installation.

Specifically, if the vehicle controller 3000 detects that the battery pack quick change signal is not true and the battery pack lock signal is not true, the vehicle controller 3000 further determines whether the electric vehicle is currently in the running mode, and if so, Note that when the battery pack is not locked yet, the second prompt information is sent to the meter 4000 to prompt the user to stop. For example, the meter 4000 displays “quick change battery lock fault, please lean back”, and delays the second preset. After the time t2, the power-off process is entered to ensure the safety of the electric vehicle and the user; if the vehicle controller 3000 determines that the electric vehicle is not currently in the driving mode, it further determines whether the power-on process is currently in the driving mode, and if so, due to this When the battery pack is not locked, the high voltage power-on is prohibited, and the third prompt information is also sent to the meter 4000. For example, the meter 4000 displays "the power battery is not installed, please check" to prompt the user.

In an embodiment of the present invention, when the vehicle controller 3000 does not acquire the battery pack quick change signal and acquires the battery pack lock signal, if the vehicle controller 3000 determines that the electric vehicle is in the running mode, the electric vehicle is controlled. If the vehicle controller 3000 determines that the electric vehicle is in the power-on process, the vehicle controller 3000 sends a power-on control command to the battery manager 2000 to perform high-voltage power-on control on the electric vehicle.

Specifically, when the vehicle controller 3000 detects that the battery pack quick change signal is not true, but the battery pack lockout signal is true, it indicates that the electric vehicle is not ready for quick change or is changing quickly, then the whole vehicle The controller 3000 allows the electric vehicle to perform high voltage power-on, running, and the like. For example, if the electric vehicle is currently in the driving mode, keep the current state of the electric vehicle running. If the electric vehicle is currently in the power-on process, continue the power-on process and complete the power-on. If the electric vehicle is currently in other states, continue to maintain The current state.

In summary, the vehicle controller exchanges information with the battery pack quick change device to realize the phased monitoring of the whole vehicle to the power exchange process, and realizes the whole process of power exchange automation; meanwhile, if the vehicle high voltage system is still at the start of power exchange In the dangerous state of connected electrification, automatic disconnection of high-voltage power-off can be realized, and the relevant operator can be informed by the instrument and other means, which improves the efficiency and safety of the battery quick-change process and improves the power-changing operation. User-friendly service, easy to streamline the application of the process and the application of bulk switching.

The battery pack quick change control system of the electric vehicle of the embodiment of the invention, the whole vehicle controller and the battery pack quick change device carry out the letter Interacting to obtain the battery pack quick change signal and the battery pack lock signal, and generating corresponding control commands according to the battery pack quick change signal, the battery pack lock signal and the electric vehicle state information, and sending corresponding control commands to the battery manager The high-voltage power-on or power-off control of the electric vehicle is implemented to control the battery pack quick change process, and the control system improves the efficiency and safety of the battery quick change process, thereby greatly improving the user experience.

In order to implement the above embodiments, the present invention also provides a battery pack quick change control method for an electric vehicle.

7 is a flow chart of a battery pack quick change control method for an electric vehicle according to an embodiment of the present invention. The battery pack quick change control system of the electric vehicle includes a battery pack quick change device, a battery manager and a vehicle controller, and the battery pack quick change device includes a battery pack lock mechanism and a tray jacking mechanism, and the whole vehicle controller respectively The battery pack locking mechanism is connected to the tray jacking mechanism. As shown in FIG. 7, the battery pack quick change control method of the electric vehicle according to the embodiment of the present invention includes the following steps:

S1. The vehicle controller communicates with the battery pack locking mechanism and the tray jacking mechanism respectively to obtain a battery pack quick change signal and a battery pack lock signal.

In an embodiment of the present invention, when the battery pack locking mechanism sends an unlocking signal to the vehicle controller and the tray jacking mechanism sends a jacking signal to the vehicle controller, the vehicle controller obtains a battery pack quick change. Signal; when the battery pack locking mechanism sends a lock signal to the vehicle controller, the vehicle controller acquires the battery pack lock signal.

Specifically, when the battery pack locking mechanism sends an unlocking signal to the vehicle controller and the tray jacking mechanism sends a jacking signal to the vehicle controller, the vehicle controller obtains a battery pack quick change signal, that is, the battery at this time. The packet quick change signal is true. Conversely, when the battery pack quick change signal is not true, the vehicle controller does not obtain the battery pack quick change signal.

Similarly, when the battery pack locking mechanism issues a lock signal to the vehicle controller, the vehicle controller acquires the battery pack lock signal, that is, the battery pack lock signal is true at this time. Conversely, when the battery pack lockout signal is not true, the vehicle controller does not acquire the battery pack lockout signal.

S2. The vehicle controller generates a corresponding control command according to the battery pack quick change signal, the battery pack lock signal, and the state information of the electric vehicle.

Specifically, the state information of the electric vehicle may be a vehicle speed, a current mode (for example, a traveling mode), or the like. For example, if the vehicle controller obtains the battery pack quick change signal and the speed of the electric vehicle is 0, it indicates that the electric vehicle is ready to replace the battery pack. In order to ensure the safety of the battery pack replacement, it is necessary to ensure that the entire vehicle is not charged. Then, the vehicle controller generates a power-off control command.

S3, the vehicle controller sends corresponding control commands to the battery manager to perform high voltage power-on or power-off control on the electric vehicle to control the battery pack quick change process.

In an embodiment of the present invention, the vehicle controller further communicates with the meter of the electric vehicle, wherein when the vehicle controller obtains the battery pack quick change signal, the vehicle controller determines whether the speed of the electric vehicle is 0. If the vehicle speed is 0, the first prompt information is sent to the meter to prompt the user to put the vehicle key in the OFF position; the vehicle controller also determines whether the vehicle key is in the OFF position, and if so, sends the power-off control command to Battery manager to control electric vehicles under high voltage If no, the power-off control command is sent to the battery manager after the first predetermined time delay to perform high-voltage power-off control of the electric vehicle.

More specifically, first, the electric vehicle enters the quick change station and starts to change state. If the vehicle controller obtains the battery pack quick change signal, that is, the battery pack quick change signal is true, then the whole vehicle controller is Further detecting whether the vehicle speed is 0. If the vehicle speed is 0, the first prompt information is sent to the meter to prompt the user to put the vehicle key in the OFF position. For example, through the meter, “The quick change is about to enter, please put the key in the OFF position. "If the speed is not 0, there is no operation." If the user sees the first prompt information on the meter, the key is placed in the OFF position, and the vehicle controller enters the power-off process when the key is determined to be in the OFF position, and the power-off is completed; if the vehicle controller is transmitting After the first prompt message is completed, it is judged that the key is still not in the OFF position, and then waits, and in the first preset time, the state of the key is still detected, and the first prompt information is continuously output to the meter, if the waiting time exceeds The first preset time is directly entered into the power-off process, and the power is turned off.

In an embodiment of the present invention, the method further includes: when the vehicle controller does not obtain the battery pack quick change signal and does not obtain the battery pack lock signal,

If the vehicle controller determines that the electric vehicle is in the driving mode, sending the second prompt information to the meter to prompt the user to stop, and sending the power-off control command to the battery manager after the second preset time delay to the electric vehicle Perform high voltage power-off control;

If the vehicle controller determines that the pure electric vehicle is in the driving mode of the driving mode, the power-on control command is prohibited from being sent to the battery manager to prohibit the electric vehicle from performing high-voltage power-on, and the third prompt information is sent to the meter to prompt the user. Check the installation of the power battery.

Specifically, if the vehicle controller detects that the battery pack quick change signal is not true and the battery pack lock signal is not true, the vehicle controller further determines whether the electric vehicle is currently in the running mode, and if so, the description When the battery pack is not locked, the second prompt message is sent to the meter to prompt the user to stop. For example, the meter displays “Fast change battery lock fault, please stop by the side”, and enters the next delay after the second preset time. The electric flow is to ensure the safety of the electric vehicle and the user; if the vehicle controller determines that the electric vehicle is not currently in the driving mode, further judge whether the current power-on process is in the driving mode, and if so, the battery pack is not locked at this time. Then, the high voltage power-on is prohibited, and the third prompt information is also sent to the meter. For example, the meter displays “The power battery is not installed, please check” to prompt the user.

In an embodiment of the present invention, the method further includes: when the vehicle controller does not obtain the battery pack quick change signal, and obtains the battery pack lock signal,

If the vehicle controller determines that the electric vehicle is in the driving mode, controlling the electric vehicle to maintain the driving mode;

If the vehicle controller determines that the electric vehicle is in the power-on process, the vehicle controller sends a power-on control command to the battery manager to perform high-voltage power-on control of the electric vehicle.

Specifically, when the vehicle controller detects that the battery pack quick change signal is not true, but the battery pack lockout signal is true, it indicates that the electric vehicle is not in the ready for quick change or is in the fast change state, then the whole vehicle control The device allows the electric vehicle to perform high-voltage power-on, driving, and the like. For example, if the electric vehicle is currently in the driving mode, keep the current state of the electric vehicle running. If the electric vehicle is currently in the power-on process, continue the power-on process and complete the power-on. If the electric vehicle is currently in other states, continue to maintain The current state.

8 is a flow chart of a battery pack quick change control method for an electric vehicle according to an embodiment of the present invention. The execution body in the flowchart is a vehicle controller. For convenience of description, the subject vehicle controller is omitted in the steps shown in FIG. 8.

As shown in FIG. 8, the battery pack quick change control method includes the following steps: S101: determining whether the battery pack quick change signal is true. If so, the steps shown in S102 in the figure are executed. If not, execute S103 to determine whether the battery pack lock signal is true. If it is judged that the battery pack lock signal is not true, the steps shown in S104 in the figure are executed. If it is judged that the battery pack lock signal is true, the steps shown in S105 in the figure are executed.

In the battery pack quick change control method of the electric vehicle according to the embodiment of the invention, the vehicle controller and the battery pack quick change device perform information interaction to obtain the battery pack quick change signal and the battery pack lock signal, and according to the battery pack quick change signal, The battery pack lock signal and the state information of the electric vehicle generate corresponding control commands, and send corresponding control commands to the battery manager to perform high voltage power-on or power-off control on the electric vehicle to control the battery pack quick change process. The control method improves the efficiency and security of the battery quick change process, thereby greatly improving the user experience.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " After, "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship of the "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description of the present invention and simplified description, and does not indicate or imply the indicated device or component. It must be constructed and operated in a particular orientation, and is not to be construed as limiting the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

In the present invention, the terms "installation", "connected", "connected", "fixed" and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements, unless otherwise specified Limited. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the present invention, the first feature may be "on" or "under" the second feature unless otherwise specifically stated and defined. The first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

A battery pack quick change control system for an electric vehicle, comprising:

a battery pack quick change device, the battery pack quick change device comprising a battery pack locking mechanism and a tray jacking mechanism;

Battery manager;

a vehicle controller, wherein the vehicle controller is respectively connected to the battery pack locking mechanism and the tray jacking mechanism to obtain a battery pack quick change signal and a battery pack lock signal, and the vehicle controller is further The battery manager communicates, and the vehicle controller generates a corresponding control command according to the battery pack quick change signal, the battery pack lock signal, and status information of the electric vehicle, and sends the corresponding control command to The battery manager performs high voltage power-on or power-off control on the electric vehicle to control the battery pack quick change process.
The battery pack quick change control system for an electric vehicle according to claim 1, further comprising a meter, wherein the meter communicates with the vehicle controller, wherein

When the vehicle controller acquires the battery pack quick change signal, the vehicle controller determines whether the vehicle speed of the electric vehicle is 0, and if the vehicle speed is 0, sends the first prompt information to The meter prompts the user to place the car key in the OFF position;

The vehicle controller further determines whether the car key is in an OFF position, and if yes, sends a power-off control command to the battery manager to perform high-voltage power-off control on the electric vehicle, and if not, After the first preset time is delayed, a power-off control command is sent to the battery manager to perform high-voltage power-off control on the electric vehicle.
The battery pack quick change control system for an electric vehicle according to claim 2, wherein when the vehicle controller does not acquire the battery pack quick change signal and does not acquire the battery pack lock signal ,

If the vehicle controller determines that the electric vehicle is in the driving mode, sending a second prompt message to the meter to prompt the user to stop, and sending a power-off control command after delaying the second preset time Go to the battery manager to perform high voltage power-off control on the electric vehicle;

If the vehicle controller determines that the pure electric vehicle is in the driving mode, the power-on control command is prohibited from being sent to the battery manager to prohibit the electric vehicle from performing high-voltage power-on, and the third A prompt message is sent to the meter to prompt the user to check the installation of the power battery.
The battery pack quick change control system for an electric vehicle according to claim 2, wherein when the vehicle controller does not acquire the battery pack quick change signal and acquires the battery pack lock signal,

If the vehicle controller determines that the electric vehicle is in a driving mode, controlling the electric vehicle to maintain the driving mode;

If the vehicle controller determines that the electric vehicle is in a power-on process, the vehicle controller sends a power-on control command to the battery manager to perform high-voltage power-on control on the electric vehicle.
The battery pack quick-change control system for an electric vehicle according to claim 1, wherein the battery pack locking mechanism comprises:

a plurality of locking blocks, wherein the locking block is provided with a locking groove;

a plurality of locking pins respectively corresponding to the plurality of locking blocks, at least a portion of the locking pins being located in a locking groove of the corresponding locking block;

a linkage structure, the linkage structure is coupled to the plurality of locking pins, and the linkage structure is configured to enable the plurality of locking pins to act synchronously such that each of the locking pins can open or close the corresponding locking Stop groove.
A battery pack quick change control system for an electric vehicle according to claim 5, wherein said interlocking structure is provided to enable said plurality of lock pins to pivot with respective pivot axes of each of said lock pins.
A battery pack quick change control method for an electric vehicle, characterized in that the battery pack quick change control system of the electric vehicle comprises a battery pack quick change device, a battery manager and a vehicle controller, and the battery pack quick change device The battery pack locking mechanism and the tray lifting mechanism include the following steps:

The vehicle controller communicates with the battery pack locking mechanism and the tray jacking mechanism respectively to obtain a battery pack quick change signal and a battery pack lock signal;

The vehicle controller generates a corresponding control command according to the battery pack quick change signal, the battery pack lock signal, and status information of the electric vehicle;

The vehicle controller sends the corresponding control command to the battery manager to perform high voltage power-on or power-off control on the electric vehicle to control the battery pack quick change process.
A battery pack quick change control method for an electric vehicle according to claim 7, wherein

When the battery pack locking mechanism sends an unlocking signal to the vehicle controller and the tray jacking mechanism sends a jacking signal to the vehicle controller, the vehicle controller acquires the battery pack fast Change signal

When the battery pack locking mechanism issues a lock signal to the vehicle controller, the vehicle controller acquires the battery pack lock signal.
The battery pack quick change control method for an electric vehicle according to claim 7 or 8, wherein the vehicle controller further communicates with a meter of the electric vehicle, wherein

When the vehicle controller acquires the battery pack quick change signal, the vehicle controller determines whether the vehicle speed of the electric vehicle is 0, and if the vehicle speed is 0, sends the first prompt information to The meter prompts the user to place the car key in the OFF position;

The vehicle controller further determines whether the car key is in an OFF position, and if yes, sends a power-off control command to the battery manager to perform high-voltage power-off control on the electric vehicle, and if not, After the first preset time is delayed, a power-off control command is sent to the battery manager to perform high-voltage power-off control on the electric vehicle.
The battery pack quick change control method for an electric vehicle according to claim 9, further comprising: When the vehicle controller does not obtain the battery pack quick change signal and does not acquire the battery pack lock signal,

If the vehicle controller determines that the electric vehicle is in the driving mode, sending a second prompt message to the meter to prompt the user to stop, and sending a power-off control command after delaying the second preset time Go to the battery manager to perform high voltage power-off control on the electric vehicle;

If the vehicle controller determines that the pure electric vehicle is in the driving mode, the power-on control command is prohibited from being sent to the battery manager to prohibit the electric vehicle from performing high-voltage power-on, and the third A prompt message is sent to the meter to prompt the user to check the installation of the power battery.
The battery pack quick change control method for an electric vehicle according to claim 9, further comprising: when the vehicle controller does not acquire the battery pack quick change signal, obtaining the battery pack lock Signal,

If the vehicle controller determines that the electric vehicle is in a driving mode, controlling the electric vehicle to maintain the driving mode;

If the vehicle controller determines that the electric vehicle is in a power-on process, the vehicle controller sends a power-on control command to the battery manager to perform high-voltage power-on control on the electric vehicle.