High-speed battery replacement control method for new energy pure electric vehicle

Abstract

The invention discloses a new energy pure electric vehicle high-speed battery replacement control method, which is characterized in that an energy complementing road entering from a ramp is arranged outside a main road of a high-speed road, and the energy complementing road is sequentially provided with a power unloading area and a power on area; vehicles driving into the energy complementing road from the high-speed main road sequentially pass through the unloading area and the electrifying area to complete unloading and electrifying processes of the replaceable batteries of the vehicles; when a vehicle runs in an unloading area, the vehicle unlocks a locking mechanism of a battery pack; and in the power-on area, when the battery pack is detected, the battery pack is locked in the battery compartment of the automobile chassis through the battery pack locking mechanism. The method has the advantages that rapid energy supplementation is achieved without stopping in the high-speed driving process, the endurance anxiety is reduced, the endurance of the vehicle is improved, and the purpose of rapidly completing battery replacement is achieved.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle battery swapping technology, and in particular to a high-speed battery swapping control method for new energy pure electric vehicles. Background Technology

[0002] In recent years, the number of new energy vehicles on the road has been increasing, and more people are willing to buy and drive them, so new energy vehicles are bound to become more widespread in the future. However, the shortcomings of new energy vehicles are also obvious at present, mainly in terms of range, and there has been no effective solution yet.

[0003] Currently, major manufacturers are primarily employing two approaches to address this issue: increasing battery capacity to extend the vehicle's range on a single charge, and improving charging speed by utilizing higher voltage levels to fully charge the battery in a shorter time. Battery replacement is another option, allowing for quicker installation of a fully charged battery. All of these methods require a certain amount of time to charge. While these methods may meet users' travel needs in urban areas or for short trips, they are insufficient for long-distance travel, especially on highways. During peak travel periods like the Spring Festival and National Day holidays, long queues form at highway service areas, highlighting the inability of traditional charging methods to meet the demand for rapid recharging of electric vehicles. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-speed battery swapping control method for new energy pure electric vehicles, which can achieve rapid energy replenishment without stopping during high-speed driving, reduce range anxiety, improve vehicle range, and achieve the goal of quickly completing battery swapping.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a high-speed battery swapping control method for new energy pure electric vehicles, wherein a charging road is set up outside the main road of the highway, which is accessed by a ramp, and the charging road is sequentially set up with a battery unloading area and a charging area; vehicles entering the charging road from the main road of the highway sequentially pass through the battery unloading area and the charging area to complete the battery unloading and charging process of the vehicle's swappable battery; wherein when the vehicle is driving in the battery unloading area, the vehicle unlocks the battery pack locking mechanism; when the vehicle is in the charging area, when the battery pack is detected, the battery pack locking mechanism locks the battery pack in the battery compartment of the vehicle chassis.

[0006] After entering the charging road, the vehicle's speed signal is detected; if the vehicle speed is within the set speed range in the unloading area, it enters the charging area and completes the charging operation in the charging area; if the vehicle speed is outside the speed range in the unloading area, the vehicle alarm will issue a reminder to maintain the vehicle speed; if the vehicle speed is outside the speed range when entering the charging area or leaving the unloading area, it enters the static battery swapping mode.

[0007] The charging road is equipped with a control unit, and detection modules are installed at the entrance and exit of the charging road to detect the entry and exit of vehicles. At the entrance of the charging road, there is a real-time updated electronic sign. The control unit is used to drive the sign to show whether the charging road is currently occupied.

[0008] A gate is installed at the entrance of the charging road. When the charging road is detected to be in static battery swapping mode, the gate is closed, prohibiting vehicles from entering the charging road; otherwise, the gate is open, and the gate is open by default.

[0009] In the battery unloading area of ​​the refueling road, there is a groove along the vehicle's travel direction to accommodate the battery pack that is removed during travel.

[0010] When the vehicle is detected to be gradually decelerating within a set speed range during the power-on phase, the power-on process is initiated. The fully charged battery pack is placed in the battery compartment of the vehicle chassis. Once the vehicle detects the battery pack, it activates the locking mechanism to lock the battery pack inside.

[0011] After the battery pack is locked in the power-on area, the vehicle enters the high-voltage power-on process to determine if the power-on is normal. If the power-on is normal, the vehicle will drive out of the battery swapping road. Otherwise, if the power-on is abnormal, the vehicle will gradually stop on the battery swapping road. When the vehicle stops in the power-on area, the ramp at the entrance of the battery swapping road will be closed and an alarm will be issued through an electronic sign indicating that the battery swapping road is abnormal.

[0012] The detected status information of the battery swapping route is uploaded to the cloud platform via the network. Users can query the location, current status, and occupancy status of the battery swapping route through a mobile app.

[0013] After entering the charging road, the charging road's control unit connects to the vehicle's controller via the vehicle network to perform data interaction and control. When the battery swapping conditions are met, it sends out an unlocking command to complete the battery removal operation in the unloading area.

[0014] The speed range for driving on the refueling road is 30-60 km / h.

[0015] The advantages of this invention are: it enables rapid energy replenishment without stopping during high-speed driving, reduces range anxiety, improves vehicle range, and achieves the goal of quickly completing battery swapping. Attached Figure Description

[0016] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings:

[0017] Figure 1 This is a block diagram illustrating the battery swapping control principle of the present invention.

[0018] Figure 2This is a schematic diagram of the energy replenishment road of the present invention. Detailed Implementation

[0019] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and the description of the preferred embodiments.

[0020] Example 1:

[0021] This solution includes a range-extending battery pack, an on-board range-extending battery mount, and a road replenishment system.

[0022] The range extender battery pack includes a cell pack for storing energy, a battery management system for safe charging and discharging of the battery pack, and a battery pack deployment and recovery system.

[0023] The vehicle-mounted range extender battery bracket is installed at the bottom of the vehicle. The battery can be automatically pushed out or stored in the range extender battery bracket through the bracket. The bracket and the range extender battery unit are equipped with leakage protection devices and waterproof safety pressure relief valves. The range extender battery bracket has an automatic locking function that can lock the range extender battery pack after it is installed in the bracket.

[0024] The energy replenishment road system is located on a special section of the expressway, outside the main lane of the expressway, and is accessed through a gate. On the energy replenishment road, vehicles need to activate the automatic energy replenishment mode and maintain a speed of 60km / h to change energy replenishment points.

[0025] When the vehicle needs to be recharged, you can place an order on the app. When passing through a clearly marked charging station on the highway, the automatic charging mode will be activated to increase the range. Alternatively, you can choose to park in a designated charging station at a service area for automatic recharging when you stop for a rest.

[0026] This method of increasing the battery capacity of electric vehicles to extend their driving range can continuously extend the range of new energy vehicles without stopping at service areas or requiring human intervention. It also enables convenient and rapid replacement of range-extending battery packs for electric vehicles used to increase their pure electric driving range.

[0027] The complete system includes a range-extending battery pack, an on-board range-extending battery mount, and a road refueling system.

[0028] The range extender battery pack includes battery cells for storing energy, a battery management system for safe charging and discharging, and a battery pack deployment and retraction system. Near the rear of the vehicle, there is a hook in the range extender battery pack that allows the battery to be pulled out of the support bracket when the vehicle passes the charging area barrier cable.

[0029] The vehicle-mounted range extender bracket can be lowered to a fixed angle at the bottom of the vehicle. A restraining cable automatically pulls the battery out of the bracket. Both the bracket and the range extender battery unit are equipped with leakage protection devices and waterproof safety pressure relief valves. The range extender battery bracket has an automatic locking function that locks the battery pack after it is installed. When the vehicle enters the charging area, the bracket at the bottom of the vehicle lowers. The battery pack can be removed through the discharge area and the range extender battery pack can be attached through the charging area. The bracket then returns to its original position, completing the battery swap.

[0030] The energy replenishment road system is located on a special section of the expressway, outside the main lane, and enters through a toll gate. On the energy replenishment road, vehicles must activate the automatic energy replenishment mode and maintain a speed of 60 km / h to refuel at different points. Figure 1 As shown, when a vehicle needs to use a range extender battery pack, the user can place an order through the app. When the cloud system receives the order, it begins to search for the nearest charging station on the highway the vehicle will be traveling through, notifies the charging station's charging system to enter a waiting state, and simultaneously informs the user of the charging station's location. Upon arrival at the charging station, the user is reminded to enter the charging lane and maintain a stable speed. When the vehicle reaches a clearly marked charging station on the highway, it enters the gate, activates the autonomous driving system, reduces the speed to approximately 60 km / h and maintains it. Once the vehicle passes through the charging station, one range extender task is completed.

[0031] The battery swapping process in the charging area is as follows: The vehicle enters the charging area, and the onboard range extender bracket is lowered to a fixed angle at the bottom of the vehicle. The hook at the rear of the range extender battery hangs down. When the vehicle passes the barrier cable, the battery is pulled by the cable onto the hook at the rear of the battery, and then pulled off the vehicle, falling into the lower charging area. When the vehicle passes the upper charging area, the bracket will attach a fully charged battery, and then the onboard range extender bracket at the bottom of the vehicle will rise, completing the battery swap. In the upper charging area, a movable battery pack lifting device can be used to place the battery pack onto the bracket. This can be achieved simply by keeping the moving battery pack in line with the vehicle's speed. In this embodiment, a battery pack lifting device that moves in the same direction as the vehicle's movement can be installed in a specific area of ​​the road surface in the upper charging area. As the vehicle travels along the set route, the lifting device, located in a groove in the road surface, rises and moves in the same direction as the vehicle, aligning the lifted battery pack with the bracket, thereby completing the charging process.

[0032] Furthermore, when a vehicle needs to enter a service area, users can choose to install or replace the range extender pack. Simply passing through the service area's charging station completes the range extension task without additional waiting time for charging or human intervention. The vehicle does not require replacement of the original electric vehicle's power battery pack, which has different parameters for each model. This enables convenient and rapid replacement of range extender battery packs for electric vehicles to increase pure electric driving range, thus infinitely extending the vehicle's driving range.

[0033] Example 2:

[0034] like Figure 1 , 2 As shown in this embodiment, a high-speed battery swapping control method for new energy pure electric vehicles includes a charging road accessed via a ramp outside the main highway. This charging road is sequentially equipped with a battery unloading area and a charging area. Vehicles entering the charging road from the main highway sequentially pass through the battery unloading and charging areas to complete the battery unloading and charging process. When the vehicle is in the battery unloading area, the battery pack locking mechanism is unlocked. In the charging area, when the battery pack is detected, the battery pack locking mechanism locks the battery pack within the vehicle chassis battery compartment. The battery pack locking mechanism is a component of the on-board battery swapping system, and its state is controlled by the VCU (Vehicle Control Unit).

[0035] like Figure 2 As shown, the energy replenishment road is located on the side of the main highway. Access to the energy replenishment road is via a ramp. A gate is installed at the entrance of the energy replenishment road; the gate is normally open and closes when the energy replenishment road is occupied or in an abnormal situation. The energy replenishment road can have one or more lanes, such as... Figure 2 The diagram shows a lane layout. The charging road is divided into a battery unloading area and a charging area according to the vehicle's direction of travel. The battery unloading area is used to remove the battery pack, and the charging area is used to reassemble the battery pack into the vehicle. A groove is created in the middle of the lane along the vehicle's direction of travel. A buffer device is installed in the groove in the battery unloading area. When the vehicle is traveling, it rides on the groove, with the wheels on either side of the groove. This allows the battery pack to be easily moved into the groove after falling from the chassis, preventing it from interfering with other vehicles' battery swapping. To prevent collisions, a soft cushioning layer is placed in the groove, preventing the battery pack from bumping into the groove. The low speed of vehicles on the charging road also reduces the risk of collisions. To ensure the battery pack lands accurately in the groove, tire guide lines are installed on the road surface on both sides of the groove. When the tires travel along the guide lines, the battery pack falls precisely into the groove, ensuring accurate placement. At this point, vehicle driver assistance functions, such as lane assist and cruise control, can be activated to ensure that the vehicle speed meets the battery swapping requirements while the driving trajectory also meets the requirements on the charging road.

[0036] Upon entering the charging road, the vehicle's speed signal is detected. Speed ​​detection devices are installed above or on both sides of the charging road to monitor the speed of vehicles traveling on it. The detected speed data is sent to the charging road's control unit. The control unit determines whether to perform a battery swap based on the detected vehicle speed in the unloading and charging zones. The charging road's control unit is located in roadside equipment and connects to vehicles entering the charging road via vehicle-to-everything (V2X) communication. When the vehicle speed does not meet the requirements, a reminder message is sent to the vehicle via V2X to remind the user to control their speed on the charging road. On the charging road in the unloading and charging zones, the vehicle speed should be between 30-60 km / h. Excessive speed will prevent battery swapping, while insufficient speed or stopping will result in low efficiency. Therefore, this solution sets the speed range to 30-60 km / h. When a vehicle enters the charging zone while its speed is within the set speed range in the unloading zone, it will complete the charging operation there. If the vehicle speed is outside the speed range in the unloading zone, an onboard alarm will sound to remind the vehicle to maintain its speed. If the vehicle speed is outside the speed range when entering or leaving the charging zone, it will enter static battery swapping mode. Control units are installed along the charging route, and detection modules are installed at the entrance and exit to detect vehicle entry and exit. When the number of vehicles using the charging route reaches the usage limit, the gate can be closed or an electronic sign can be used to alert subsequent vehicles that the charging route is temporarily unavailable. Real-time updated electronic signs are installed at the entrance of the charging route or at a certain distance from the entrance. The output of the control unit is connected to the electronic signs, which drive the signs to display whether the charging route is currently occupied. When in static battery swapping mode, it indicates that the vehicle speed on the battery swapping route is too low. To prevent safety accidents, the gate is closed, and the route is reopened and the gate is opened again after the vehicle completes the swap and leaves the area. A gate is installed at the entrance of the charging route. When static battery swapping mode is detected, the gate is closed, prohibiting vehicles from entering; otherwise, the gate is open, and is open by default. The gate is driven and controlled by the charging route's control unit.

[0037] like Figure 2 As shown, in the unloading area of ​​the charging road, there are grooves along the vehicle's travel direction to accommodate battery packs removed during travel. These grooves are continuous throughout the charging road. In the unloading area, the grooves act as buffers, allowing unloaded battery packs to be easily retrieved later. In the charging area, a lifting device is installed within the grooves. This lifting device can hold fully charged battery packs and is mounted on a track within the groove, allowing it to move along the track.

[0038] When the vehicle is detected to be within the set speed range during the power-on phase, the power-on process is initiated, and a fully charged battery pack is placed in the battery compartment of the vehicle chassis. After the vehicle detects the battery pack, it activates the locking mechanism to lock the battery pack inside the battery pack. When a vehicle enters the unloading area, the vehicle speed is monitored in real time to ensure it meets the preset range. If so, the control unit sends a unloading request command to the vehicle via the vehicle network. The vehicle control unit (VCU) then unlocks the battery pack locking mechanism, which secures the battery pack within the battery compartment. Once unlocked, the battery pack falls out of the battery compartment by gravity and into the unloading area's recess. When the vehicle enters the charging area, the real-time vehicle speed is monitored. If the speed is within the set range, the control unit drives the lifting device to move along the vehicle's direction of travel and align it with the battery compartment (alignment can be determined through various methods such as preset laser alignment and visual alignment). After reaching the alignment position, the lifting device maintains the same speed as the vehicle and then raises the battery pack to a height matching the battery compartment where it is installed. Once the VCU detects the battery pack entering the battery compartment, it locks the battery pack through the locking mechanism and sends a locking signal back to the control unit. The control unit then lowers the lifting device until it gradually stops. During the next battery swap, a new fully charged battery pack is placed on the lifting device. The lifting device can move along the track using various methods, such as by a motor.

[0039] After the battery pack is locked in the power-on area, the vehicle enters the high-voltage power-on process to determine if the power-on is normal. If the power-on is normal, the vehicle will drive out of the battery swapping road. Otherwise, if the power-on is abnormal, the vehicle will gradually stop on the battery swapping road. When a vehicle stops in the power-on area, the ramp at the entrance of the battery swapping road will be closed and an electronic sign will be issued to remind that the battery swapping road is abnormal, so as to prevent new battery swapping vehicles from entering after the battery swapping is abnormal and causing more impact on the battery swapping road.

[0040] As the core of the battery swapping route, the control unit is used to monitor the status of the battery swapping route. It uploads the detected status information of the battery swapping route to the cloud platform via the network. Users can query the location, current status, and occupancy status of the battery swapping route through a mobile app, which is convenient for users to plan and use.

[0041] After entering the charging road, the charging road's control unit connects to the vehicle's controller via the vehicle network to perform data interaction and control. When the battery swapping conditions are met, it sends out an unlocking command to complete the battery removal operation in the unloading area. In other words, the control unit connects to the vehicle entering the charging road through the vehicle network module and exchanges commands and alarm information during the battery removal and power-on processes.

[0042] Obviously, the specific implementation of this invention is not limited to the above-described methods. Any non-substantial improvements made using the inventive concept and technical solution of this invention are within the protection scope of this invention.

Claims

1. A high-speed battery swapping control method for new energy pure electric vehicles, characterized in that: A charging road is set up outside the main road of the highway, accessible via a ramp. The charging road is divided into a battery unloading area and a battery charging area. Vehicles entering the charging road from the main road of the highway pass through the battery unloading area and the battery charging area in sequence to complete the battery unloading and charging process of the swappable vehicle battery. When the vehicle is driving in the battery unloading area, the locking mechanism of the battery pack is unlocked. When the vehicle is in the charging area, the battery pack is locked in the battery compartment of the vehicle chassis by the battery pack locking mechanism when the battery pack is detected.

2. The high-speed battery swapping control method for new energy pure electric vehicles as described in claim 1, characterized in that: After entering the charging road, the vehicle's speed signal is detected; if the vehicle speed is within the set speed range in the unloading area, it enters the charging area and completes the charging operation in the charging area; if the vehicle speed is outside the speed range in the unloading area, the vehicle alarm will issue a reminder to maintain the vehicle speed; if the vehicle speed is outside the speed range when entering the charging area or leaving the unloading area, it enters the static battery swapping mode.

3. A high-speed battery swapping control method for new energy pure electric vehicles as described in claim 1 or 2, characterized in that: The charging road is equipped with a control unit, and detection modules are installed at the entrance and exit of the charging road to detect the entry and exit of vehicles. At the entrance of the charging road, there is a real-time updated electronic sign. The control unit is used to drive the sign to show whether the charging road is currently occupied.

4. The high-speed battery swapping control method for new energy pure electric vehicles as described in claim 3, characterized in that: A gate is installed at the entrance of the charging road. When the charging road is detected to be in static battery swapping mode, the gate is closed, prohibiting vehicles from entering the charging road. Otherwise, the gate is in the open state, and the gate is in the open state by default.

5. A high-speed battery swapping control method for new energy pure electric vehicles as described in any one of claims 1-4, characterized in that: In the battery unloading area of ​​the refueling road, there is a groove along the vehicle's travel direction to accommodate the battery pack that is removed during travel.

6. A high-speed battery swapping control method for new energy pure electric vehicles as described in any one of claims 1-4, characterized in that: When the vehicle is detected to be gradually decelerating within a set speed range during the power-on phase, the power-on process is initiated. The fully charged battery pack is placed in the battery compartment of the vehicle chassis. Once the vehicle detects the battery pack, it activates the locking mechanism to lock the battery pack inside.

7. A high-speed battery swapping control method for new energy pure electric vehicles as described in any one of claims 1-6, characterized in that: After the battery pack is locked in the power-on area, the vehicle enters the high-voltage power-on process to determine if the power-on is normal. If the power-on is normal, the vehicle will drive out of the battery swapping road. Otherwise, if the power-on is abnormal, the vehicle will gradually stop on the battery swapping road. When the vehicle stops in the power-on area, the ramp at the entrance of the battery swapping road will be closed and an alarm will be issued through an electronic sign indicating that the battery swapping road is abnormal.

8. A high-speed battery swapping control method for new energy pure electric vehicles as described in any one of claims 1-6, characterized in that: The detected status information of the battery swapping route is uploaded to the cloud platform via the network. Users can query the location, current status, and occupancy status of the battery swapping route through a mobile app.

9. A high-speed battery swapping control method for new energy pure electric vehicles as described in any one of claims 1-6, characterized in that: After entering the charging road, the charging road's control unit connects to the vehicle's controller via the vehicle network to perform data interaction and control. When the battery swapping conditions are met, it sends out an unlocking command to complete the battery removal operation in the unloading area.

10. A high-speed battery swapping control method for new energy pure electric vehicles as described in any one of claims 1-6, characterized in that: The speed range for driving on the refueling road is 30-60 km / h.

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