Vehicle body posture leveling method of four-wheel independent lifting mechanism

Abstract

The vehicle body posture leveling method of the four-wheel independent lifting mechanism comprises the following steps that S1, a vehicle enters a battery replacing station, four RGVs run to vehicle hubs, and a jacking assembly jacks a chassis; s2, the encoder obtains height data of the chassis and sends the height data to the single chip microcomputer, and when the height data difference is within a preset range, the step S4 is executed; when the height data difference is not within the preset range, executing the step S3; s3, the single chip microcomputer controls a corresponding jacking assembly to move up and down according to the height data difference, so that a chassis at the position of a corresponding hub of the vehicle moves up and down, and after adjustment is completed, the step S2 is executed; and S4, the battery replacement device is controlled to move to the position below the chassis of the vehicle, and battery replacement is completed. The method has the main beneficial effects that the battery replacement failure rate caused by the vehicle posture problem in the battery replacement process is avoided, the battery replacement stability and the battery replacement efficiency are greatly improved, and the operation and maintenance cost of manufacturers is reduced.

Description

Technical Field

[0001] The present invention relates to the field of battery replacement technology, and in particular to a method for leveling a vehicle body posture of a four-wheel independent lifting mechanism. Background Art

[0002] Against the backdrop of a rapid increase in the number of new energy vehicles, it is difficult to meet the huge demand for energy replenishment by relying solely on traditional charging methods, and there are bottlenecks in charging methods such as long replenishment time and inflexibility. Although there are 1000V high-voltage fast chargers on the market that can shorten the replenishment time, new technologies often require time to verify and improve. In the current context, the battery swap model has emerged as the times require, becoming an important way to shorten the replenishment time of new energy vehicles and reduce the pressure on the power grid when there are many vehicles replenishing energy. The battery swap station can charge the vehicle when the power grid electricity price is at the valley value, and return the electricity to the power grid when the electricity price is at the peak value, which has the effect of shaving peaks and filling valleys and reducing the pressure on the power grid.

[0003] Because the bottom of the current chassis-swap new energy vehicles is tilted due to the difference in local load weight, the battery and the battery frame under the vehicle will inevitably be squeezed when the RGV car is disassembling and installing the battery in the vertical direction. When the inclination reaches a certain angle, the battery is easily stuck, resulting in the inability to disassemble and install the battery normally. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a vehicle body posture leveling method of a four-wheel independent lifting mechanism.

[0005] The purpose of the present invention is achieved through the following technical solutions: A vehicle body posture leveling method of a four-wheel independent lifting mechanism comprises the following steps: S1. The vehicle enters the battery swap station, and four RGV trolleys drive to the corresponding wheel hubs of the vehicle respectively, and the lifting components on the RGV trolleys lift the chassis at the corresponding wheel hubs of the vehicle respectively; S2, the encoder set on the RGV trolley obtains the height data of the chassis at the corresponding wheel hub of the vehicle, and sends the height data to the single chip. When the height data difference is within the predetermined range, step S4 is executed; when the height data difference is not within the predetermined range, step S3 is executed; S3, the single machine chip controls the corresponding lifting assembly to move up and down according to the height data difference, so that the chassis at the corresponding wheel hub of the vehicle moves up and down. After the adjustment is completed, execute step S2; S4. Control the battery replacement device to move under the chassis of the vehicle to complete the battery replacement.

[0006] Preferably, in step S2, "when the height data difference is not within the predetermined range" specifically means: when the encoder cannot detect the height data, the jacking assembly on the RGV trolley where the encoder is located drives the chassis at the corresponding wheel hub to move downward until the encoder detects the height between the chassis at the wheel hub and it.

[0007] Preferably, in step S2, "when the height data difference is not within the predetermined range" specifically means: when the right front encoder detects that the data value is too large or too small, the lifting assembly on the right front RGV trolley drives the chassis at the corresponding wheel hub to move downward or upward until the encoder detects that the height reaches the predetermined range.

[0008] Preferably, in step S2, "when the height data difference is not within the predetermined range" specifically means: when the right rear encoder detects that the data value is too large or too small, the lifting assembly on the right rear RGV trolley drives the chassis at the corresponding wheel hub to move downward or upward until the encoder detects that the height reaches the predetermined range.

[0009] Preferably, in step S2, "when the height data difference is not within the predetermined range" specifically means: when the left front encoder detects that the data value is too large or too small, the lifting assembly on the left front RGV trolley drives the chassis at the corresponding wheel hub to move downward or upward until the encoder detects that the height reaches the predetermined range.

[0010] Preferably, in step S2, "when the height data difference is not within the predetermined range" specifically means: when the left rear encoder detects that the data value is too large or too small, the lifting assembly on the left rear RGV trolley drives the chassis at the corresponding wheel hub to move downward or upward until the encoder detects that the height reaches the predetermined range.

[0011] Preferably, the lifting assembly is quickly connected to the RGV trolley.

[0012] Preferably, a CCD camera is installed on the RGV trolley.

[0013] Preferably, a pressure sensor is fixedly provided on the jacking assembly.

[0014] Preferably, an alarm is provided on the RGV trolley.

[0015] The beneficial effects of the present invention are mainly reflected in: the height of the chassis at the corresponding wheel hub of the vehicle is detected by the encoders on the four RGV carts, and the vehicle posture is leveled by the jacking assembly. The battery is replaced after the vehicle body posture is leveled, which prevents the occurrence of tilting in the front, back, left and right directions. The battery replacement failure rate caused by vehicle posture problems during the battery replacement process can be avoided, which greatly improves the stability and efficiency of battery replacement and reduces the manufacturer's operating and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The technical solution of the present invention is further described below in conjunction with the accompanying drawings: Figure 1 : Flowchart of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0018] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0019] like Figure 1 As shown, the present invention discloses a vehicle body posture leveling method of a four-wheel independent lifting mechanism, comprising the following steps: S1. The vehicle enters the battery swap station, and four RGV carts respectively drive to the corresponding wheel hubs of the vehicle. The jacking components on the RGV carts respectively lift the chassis at the corresponding wheel hubs of the vehicle. In this preferred embodiment, the jacking components are prior art, as disclosed in authorization announcements No. CN215160620U, CN217730253U, etc. The present invention will not be elaborated herein, and all belong to the protection scope of the present invention.

[0020] S2. The encoder installed on the RGV trolley obtains the height data of the chassis at the corresponding wheel hub of the vehicle and sends the height data to the single chip. When the height data difference is within the predetermined range, step S4 is executed; when the height data difference is not within the predetermined range, step S3 is executed.

[0021] In the above, when the height data difference is not within the predetermined range, there are the following situations: 1. When the encoder cannot detect height data, the lifting assembly on the RGV trolley where the encoder is located drives the chassis at the corresponding wheel hub to move downward until the encoder detects the height between the chassis at the wheel hub and the height thereof.

[0022] 2. When the right front encoder detects that the data value is too large or too small, the lifting assembly on the right front RGV trolley drives the chassis at the corresponding wheel hub to move downward or upward until the encoder detects that the height reaches a predetermined range.

[0023] 3. When the encoder at the right rear detects that the data value is too large or too small, the lifting assembly on the RGV trolley at the right rear drives the chassis at the corresponding wheel hub to move downward or upward until the encoder detects that the height reaches a predetermined range.

[0024] 4. When the left front encoder detects that the data value is too large or too small, the lifting assembly on the left front RGV trolley drives the chassis at the corresponding wheel hub to move downward or upward until the encoder detects that the height reaches a predetermined range.

[0025] 5. When the encoder at the left rear detects that the data value is too large or too small, the lifting assembly on the RGV trolley at the left rear drives the chassis at the corresponding wheel hub to move downward or upward until the encoder detects that the height reaches a predetermined range.

[0026] S3. The single-machine chip controls the corresponding lifting assembly to move up and down according to the height data difference, so that the chassis at the corresponding wheel hub of the vehicle moves up and down. After the adjustment is completed, execute step S2 to ensure the horizontality of the vehicle chassis, avoid battery replacement failures due to vehicle posture problems during the battery replacement process, and improve the accuracy of subsequent battery replacement.

[0027] S4, control the battery replacement device to move to the bottom of the chassis of the vehicle to complete the battery replacement. In the above, the battery replacement device is a prior art, and the present invention will not elaborate on it here, and it belongs to the protection scope of the present invention.

[0028] In addition, in this preferred embodiment, the lifting assembly is quickly connected to the RGV trolley, which can be quickly disassembled and installed, greatly improving work efficiency. A pressure sensor is fixed on the lifting assembly to monitor its lifting pressure. In addition, a CCD camera and an alarm are fixed on the RGV trolley. The CCD camera can capture images of the moving position of the RGV trolley. The CCD camera at least includes an image sensor and an analog-to-digital conversion circuit. The image sensor is connected to the analog-to-digital conversion circuit. The analog-to-digital conversion circuit is provided with a communication interface. The image sensor converts the external light signal into an analog signal. The analog-to-digital conversion circuit converts the analog signal into a digital signal and transmits it to the processor. The CCD camera used in the present invention can meet the illumination requirements in an industrial manufacturing environment and has high sensitivity. The system uses a communication interface for data transmission, which can effectively prevent interference from other signals and improve the stability of data transmission. At the same time, the CCD camera includes an optical lens connected to the fuselage, and the image sensor and analog-to-digital converter are provided inside the fuselage. The optical lens collects external light to the image sensor, which is conducive to the system to collect clear images. In addition, in this preferred embodiment, the alarm can provide timely reminders when deviations occur in the moving position.

[0029] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0030] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vehicle body posture leveling method using a four-wheel independent lifting mechanism, characterized in that: The steps include: S1. The vehicle enters the battery swap station, and four RGV trolleys drive to the corresponding wheel hubs of the vehicle respectively, and the lifting components on the RGV trolleys lift the chassis at the corresponding wheel hubs of the vehicle respectively; S2, the encoder set on the RGV trolley obtains the height data of the chassis at the corresponding wheel hub of the vehicle, and sends the height data to the single chip. When the height data difference is within the predetermined range, step S4 is executed; when the height data difference is not within the predetermined range, step S3 is executed; S3, the single machine chip controls the corresponding lifting assembly to move up and down according to the height data difference, so that the chassis at the corresponding wheel hub of the vehicle moves up and down. After the adjustment is completed, execute step S2; S4. Control the battery replacement device to move under the chassis of the vehicle to complete the battery replacement.

2. The vehicle body posture leveling method of the four-wheel independent lifting mechanism according to claim 1 is characterized in that: In step S2, "when the height data difference is not within the predetermined range" specifically means: when the encoder cannot detect the height data, the lifting assembly on the RGV trolley where the encoder is located drives the chassis at the corresponding wheel hub to move downward until the encoder detects the height between the chassis at the wheel hub and it.

3. The vehicle body posture leveling method of the four-wheel independent lifting mechanism according to claim 1 is characterized in that: In step S2, "when the height data difference is not within the predetermined range" specifically means: when the right front encoder detects that the data value is too large or too small, the lifting assembly on the right front RGV trolley drives the chassis at the corresponding wheel hub to move downward or upward until the encoder detects that the height reaches the predetermined range.

4. The vehicle body posture leveling method of the four-wheel independent lifting mechanism according to claim 1 is characterized in that: In step S2, "when the height data difference is not within the predetermined range" specifically means: when the right rear encoder detects that the data value is too large or too small, the lifting assembly on the right rear RGV trolley drives the chassis at the corresponding wheel hub to move downward or upward until the encoder detects that the height reaches the predetermined range.

5. The vehicle body posture leveling method of the four-wheel independent lifting mechanism according to claim 1 is characterized in that: In step S2, "when the height data difference is not within the predetermined range" specifically means: when the left front encoder detects that the data value is too large or too small, the lifting assembly on the left front RGV trolley drives the chassis at the corresponding wheel hub to move downward or upward until the encoder detects that the height reaches the predetermined range.

6. The vehicle body posture leveling method of the four-wheel independent lifting mechanism according to claim 1 is characterized in that: In step S2, "when the height data difference is not within the predetermined range" specifically means: when the left rear encoder detects that the data value is too large or too small, the lifting assembly on the left rear RGV trolley drives the chassis at the corresponding wheel hub to move downward or upward until the encoder detects that the height reaches the predetermined range.

7. The vehicle body posture leveling method of the four-wheel independent lifting mechanism according to claim 1 is characterized in that: The jacking assembly is quickly connected to the RGV trolley.

8. The vehicle body posture leveling method of the four-wheel independent lifting mechanism according to claim 1 is characterized in that: The RGV trolley is provided with a CCD camera.

9. The vehicle body posture leveling method of the four-wheel independent lifting mechanism according to claim 1, characterized in that: A pressure sensor is fixedly arranged on the jacking assembly.

10. The vehicle body posture leveling method of the four-wheel independent lifting mechanism according to claim 1, characterized in that: The RGV trolley is provided with an alarm.

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