Battery changing box changing control system, control method and pure electric engineering machinery

Abstract

The invention discloses a battery changing box changing control system, a battery changing box changing control method and pure electric engineering machinery, and belongs to the technical field of pure electric engineering machinery. The control system comprises a vehicle-mounted battery changing box, a battery changing station battery changing cabinet and a vehicle control unit, and the signal input end of the vehicle control unit is electrically connected with a battery management system of a battery changing box unit; the signal output end of the vehicle control unit is in communication connection with the cloud platform through the wireless transmission unit, the cloud platform is in communication connection with the battery replacing station data acquisition module, the battery replacing station data processing module and the battery replacing station control module in sequence, the battery replacing station control module is electrically connected with the battery replacing station battery replacing cabinet, and the vehicle control unit is electrically connected with the vehicle-mounted battery replacing box. According to the invention, the battery replacing box can be universally used between battery replacing machines in a construction site, the transportation cost is reduced, the resource waste is avoided, and no voltage difference and service life difference exist in the battery replacing box, so that the problem of service life attenuation of the whole battery replacing box is solved.

Description

Technical Field

[0001] The present invention relates to a battery-swap box control system, a control method and pure electric engineering machinery, belonging to the technical field of pure electric engineering machinery. Background Art

[0002] At present, pure electric machinery generally has a large load capacity, high energy consumption, and a large battery swap box. In addition, the battery swap boxes for excavators of different tonnages or different types of construction machinery are all dedicated and cannot be switched between each other, resulting in a waste of resources. At present, vehicle battery swapping requires the replacement of the entire battery swap box as a whole. At the construction site, if there is more than one battery swap machine, corresponding battery swap boxes need to be prepared. The need to replace the corresponding exclusive battery swap box will increase transportation costs, and if there is more than one type of battery swap machine at a construction site, there will be a waste of battery swap box resources. In addition, since the overall battery swap box is large, it is difficult to ensure that there is no voltage difference and life difference inside it, which will lead to the problem of life attenuation of the entire battery swap box. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a battery swap box control system, a control method and a pure electric engineering machinery, which can realize the common use of battery swap boxes among battery swap machines on construction sites, reduce transportation costs and avoid waste of resources, and ensure that there is no voltage difference and life difference inside the battery swap box, thereby solving the problem of life degradation of the entire battery swap box.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] In the first aspect, the present invention provides a battery swap box control system, comprising a vehicle-mounted battery swap box, a battery swap cabinet at a battery swap station and a whole vehicle controller, the vehicle-mounted battery swap box is composed of a plurality of vehicle-mounted battery swap box units connected in parallel or in series, the battery swap cabinet at the battery swap station is provided with a plurality of battery swap box units at the battery swap station, the signal input end of the whole vehicle controller is electrically connected to the battery management system of the vehicle-mounted battery swap box unit, the signal output end of the whole vehicle controller is communicatively connected to a cloud platform via a wireless transmission unit, the cloud platform is communicatively connected to a battery swap station data acquisition module, a battery swap station data processing module and a battery swap station control module in turn, the battery swap station control module is electrically connected to the battery swap cabinet at the battery swap station, the power station data processing module is communicatively connected to the whole vehicle controller, and the whole vehicle controller is electrically connected to the vehicle-mounted battery swap box.

[0006] The vehicle-mounted battery swap box is provided with a locking structure for fixing the vehicle-mounted battery swap box unit, and the vehicle controller is electrically connected to the control switch of the locking structure.

[0007] The battery swap cabinet of the battery swap station is provided with a pop-up structure for fixing the battery swap box unit of the battery swap station, and the battery swap station control module is electrically connected to the control switch of the pop-up structure.

[0008] The signal input terminal of the vehicle controller is electrically connected to the GPS, and the vehicle controller performs two-way communication with the instrument.

[0009] In a second aspect, the present invention provides a method for controlling a battery swapping box, comprising the following steps:

[0010] The vehicle controller uploads the on-board battery swap box information collected by the battery management system of the on-board battery swap box unit to the cloud platform;

[0011] The cloud platform transmits the on-board battery swap box information to the battery swap station data acquisition module. The battery swap station data acquisition module reads the battery monitoring information from the on-board battery swap box information and transmits the battery monitoring information to the battery swap station data processing module.

[0012] The battery swap station data processing module analyzes the battery monitoring information, outputs the battery swap plan signal, and transmits the battery swap plan signal to the vehicle controller and the battery swap station control module;

[0013] The vehicle controller controls the on-board battery swap box to swap boxes according to the battery swap plan signal;

[0014] The battery swap station control module controls the battery swap cabinet in the battery swap station to swap boxes according to the battery swap plan signal.

[0015] It also includes: when the vehicle is driving, the GPS sends the location information to the vehicle controller in real time. When the vehicle controller detects that the battery swap machine is within the preset distance range of the battery swap station, the vehicle controller controls the instrument to ask the user whether the battery swap service is required;

[0016] When the user chooses to perform battery replacement service, a confirmation signal is sent to the vehicle controller through the instrument.

[0017] The vehicle controller controls the replacement of the on-board battery swap box according to the battery swap plan signal. Specifically, the vehicle controller controls the locking structure of the on-board battery swap box unit that needs to be replaced in the on-board battery swap box to unlock according to the battery swap plan signal.

[0018] The battery swap station control module controls the battery swap cabinet of the battery swap station to change the box according to the battery swap plan signal. Specifically, the battery swap station control module controls the pop-up structure of the corresponding battery swap box unit in the battery swap cabinet of the battery swap station to pop out the battery swap box unit of the battery swap station according to the battery swap plan signal.

[0019] The battery monitoring information includes the voltage of the on-board battery swap box unit, the battery charge status and the battery health status. When the life difference between the on-board battery swap box units exceeds the set value, the voltage difference exceeds the set value, or the charge value of a single on-board battery swap box unit is less than the set threshold, the battery swap station data processing module outputs a battery swap plan signal.

[0020] In a third aspect, the present invention provides a pure electric engineering machinery equipped with the battery-swap box and box-swap control system, wherein the pure electric engineering machinery includes an excavator and a loader.

[0021] Beneficial effects of the present invention: The present invention provides a battery swap box control system, a control method and a pure electric engineering machinery, wherein the on-board battery swap box is composed of a plurality of on-board battery swap box units connected in parallel or in series, and different battery swap machines can select different on-board battery swap box units for combination to achieve the voltage and capacity of the required load on the vehicle, and can realize the common use of battery swap boxes among battery swap machines on the construction site, thereby reducing transportation costs and avoiding waste of resources; on the basis of the foregoing, the battery swap plan does not mean replacing all on-board battery swap boxes, but replacing several of the on-board battery swap box units, by obtaining the working status and parameters of the battery swap box, and then using an algorithm to give the on-board battery swap box unit that needs to be replaced, and replacing the on-board battery swap box unit with a life difference, voltage difference or unqualified charge value, which can ensure that there is no voltage difference and life difference inside the battery swap box, thereby solving the problem of life attenuation of the entire battery swap box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a battery-swap box-swap control system of the present invention;

[0023] Figure 2 A schematic flow chart of a method for controlling a battery-swap box according to the present invention;

[0024] Figure 3 It is a structural schematic diagram of the battery swapping cabinet of the battery swapping station in the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the protection scope of the present invention.

[0026] Example 1

[0027] like Figure 1As shown, the present invention discloses a battery swap box control system, including a vehicle-mounted battery swap box 4, a battery swap cabinet 9 at a battery swap station, and a vehicle controller 3 (VCU). The vehicle-mounted battery swap box 4 is connected to the battery swap machine, with communication equipment, and provides a power source for the whole vehicle. The battery swap cabinet 9 at the battery swap station is used to connect to the charging station, with communication equipment, and can provide a power source for the battery swap machine. The vehicle controller 3 is a vehicle controller, which serves as the brain of the vehicle to control the upper and lower high voltages of the vehicle, the heat dissipation control of the vehicle, etc. In the present invention, the vehicle controller 3 has the functions of collecting battery status information of the battery swap box and controlling the fixed structure of the battery swap box. The signal input end of the vehicle controller 3 is electrically connected to GPS1, and GPS1 is used to locate the position of the battery swap machine in real time, so as to facilitate the judgment of its distance from the battery swap station. The vehicle controller 3 communicates bidirectionally with the instrument 2 to inquire the driver whether he needs to swap the battery. In addition, the driver can return the demand for whether to swap the battery to the vehicle controller 3 through the instrument 2.

[0028] The on-board battery swap box 4 is composed of several on-board battery swap box units connected in parallel or in series to achieve the voltage and capacity of the required load on the vehicle. The battery swap solution does not mean replacing all the on-board battery swap boxes, but replacing one or several of them to improve the consistency of the on-board battery swap boxes. Several battery swap box units of the battery swap station are arranged in the battery swap cabinet 9 of the battery swap station. The signal input end of the whole vehicle controller 3 is electrically connected to the BMS (battery management system) of the on-board battery swap box unit. The signal output end of the whole vehicle controller 3 is communicated with the cloud platform 5 through the wireless transmission unit. The cloud platform 5, the battery swap station data acquisition module 6, the battery swap station data processing module 7 and the battery swap station control module 8 are communicated in sequence, and the battery swap station control module 8 is electrically connected to the battery swap cabinet 9 of the battery swap station.

[0029] The cloud platform 5 is used to store the voltage, SOC (battery state of charge), SOH (battery health status) and other data uploaded by the battery swapping machine, so that the battery swapping station can read them. The data acquisition module 6 of the battery swapping station reads the remote communication information of each vehicle-mounted battery box from the cloud platform 5. The data processing module 7 of the battery swapping station is used to intelligently provide a battery swapping solution based on the information of the battery swapping machine and its needs. The control module 8 of the battery swapping station is used to unlock the corresponding battery swapping box and pop it out according to the battery swapping solution to facilitate battery swapping.

[0030] The vehicle controller 3 is in communication connection with the data processing module 7 of the battery swap station. The vehicle-mounted battery swap box 4 is provided with a locking structure for fixing the vehicle-mounted battery swap box unit. The vehicle controller 3 is electrically connected to the control switch of the locking structure. When the battery needs to be swapped, the vehicle controller 3 controls the locking structure of the vehicle-mounted battery swap box unit that needs to be replaced to open.

[0031] like Figure 3As shown, a pop-up structure for fixing the battery swap box unit of the battery swap station is provided on the battery swap cabinet 9 of the battery swap station, and the battery swap station control module 8 is electrically connected to the control switch of the pop-up structure. When the battery needs to be swapped, the battery swap station control module 8 controls the pop-up structure of the corresponding battery swap box unit of the battery swap station to work and pop out the battery swap box unit of the battery swap station.

[0032] The battery swap station in the present invention can accommodate not only excavators, but also loaders or other battery swapping machines. Thereby, there is always a battery swap box charging at the battery swap station, and the normal operation of the battery swap machine is not delayed. In this process, the user only needs to wait for the battery swap station system to automatically give the most suitable battery box, because the battery swap station can establish communication with each battery swap box to obtain its working status and parameters. The algorithm always gives the most appropriate battery box.

[0033] Example 2

[0034] like Figure 2 As shown, the present invention discloses a battery swap box control method based on the battery swap box control system in Example 1, comprising the following steps:

[0035] Step 1: When the vehicle is driving, GPS1 sends the location information to the vehicle controller 3 in real time. When the vehicle controller 3 detects that the battery swap machine has traveled to the preset distance range of the battery swap station, the vehicle controller 3 controls the instrument 2 to ask the user whether the battery swap service is required.

[0036] Step two, when the user chooses to perform battery replacement service, a confirmation signal is sent to the vehicle controller 3 through the instrument 2, and the vehicle controller 3 uploads the vehicle battery replacement box information collected by the BMS of the vehicle battery replacement box unit to the cloud platform 5.

[0037] Step three, the cloud platform 5 transmits the vehicle-mounted battery swap box information to the battery swap station data acquisition module 6, and the battery swap station data acquisition module 6 reads the battery monitoring information from the vehicle-mounted battery swap box information and transmits the battery monitoring information to the battery swap station data processing module 7. Among them, the battery monitoring information includes the voltage of the vehicle-mounted battery swap box unit, the battery charge state and the battery health state. When the life difference between the vehicle-mounted battery swap box units exceeds the set value, the voltage difference exceeds the set value, or the charge value of a single vehicle-mounted battery swap box unit is less than the set threshold, the battery swap station data processing module 7 outputs a battery swap plan signal.

[0038] Step 4: The battery swap station data processing module 7 analyzes the battery monitoring information, outputs a battery swap plan signal, and transmits the battery swap plan signal to the vehicle controller 3 and the battery swap station control module 8.

[0039] Step five, the vehicle controller 3 controls the locking structure of the vehicle-mounted battery swap box unit that needs to be replaced according to the battery swap plan signal to unlock the vehicle-mounted battery swap box unit.

[0040] Step six, the battery swap station control module 8 controls the pop-up structure of the corresponding battery swap station battery swap box unit according to the battery swap plan signal to pop out the battery swap station battery swap box unit, and finally manually installs the popped-up battery swap station battery swap box unit to the position where the vehicle-mounted battery swap box unit needs to be replaced.

[0041] Example 3

[0042] This embodiment discloses a pure electric engineering machine equipped with the battery-swap box control system in Embodiment 1. The pure electric engineering machine includes an excavator, and may also accommodate a loader or other battery-swap machines capable of battery swapping.

[0043] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A battery box replacement control system, characterized in that: The invention comprises a vehicle-mounted battery swap box (4), a battery swap cabinet (9) at a battery swap station, and a vehicle controller (3). The vehicle-mounted battery swap box (4) is composed of a plurality of vehicle-mounted battery swap box units connected in parallel or in series. The battery swap cabinet (9) at the battery swap station is provided with a plurality of battery swap box units at the battery swap station. The signal input end of the vehicle controller (3) is electrically connected to the battery management system of the vehicle-mounted battery swap box unit. The signal output end of the vehicle controller (3) is communicatively connected to a cloud platform (5) via a wireless transmission unit. The cloud platform (5) is communicatively connected to a battery swap station data acquisition module (6), a battery swap station data processing module (7), and a battery swap station control module (8) in sequence. The battery swap station control module (8) is electrically connected to the battery swap cabinet (9) at the battery swap station. The power station data processing module (7) is communicatively connected to the vehicle controller (3). The vehicle controller (3) is electrically connected to the vehicle-mounted battery swap box (4).

2. The battery-swap box control system according to claim 1, characterized in that: The on-board battery swap box (4) is provided with a locking structure for fixing the on-board battery swap box unit, and the vehicle controller (3) is electrically connected to a control switch of the locking structure.

3. The battery-swap box control system according to claim 1, characterized in that: The battery swap cabinet (9) of the battery swap station is provided with a pop-up structure for fixing the battery swap box unit of the battery swap station, and the battery swap station control module (8) is electrically connected to a control switch of the pop-up structure.

4. The battery-swap box control system according to claim 1, characterized in that: The signal input end of the vehicle controller (3) is electrically connected to the GPS (1), and the vehicle controller (3) performs two-way communication with the instrument (2).

5. A method for controlling a battery box replacement, characterized in that: The following steps are involved: The vehicle controller (3) uploads the vehicle-mounted battery swap box information collected by the battery management system of the vehicle-mounted battery swap box unit to the cloud platform (5); The cloud platform (5) transmits the on-board battery swap box information to the battery swap station data acquisition module (6), and the battery swap station data acquisition module (6) reads the battery monitoring information from the on-board battery swap box information and transmits the battery monitoring information to the battery swap station data processing module (7); The battery swap station data processing module (7) analyzes the battery monitoring information, outputs a battery swap plan signal, and transmits the battery swap plan signal to the vehicle controller (3) and the battery swap station control module (8); The vehicle controller (3) controls the on-board battery swap box (4) to swap boxes according to the battery swap plan signal; The power exchange station control module (8) controls the power exchange cabinet (9) of the power exchange station to exchange boxes according to the power exchange plan signal.

6. The battery box replacement control method according to claim 5, characterized in that: Also includes: When the vehicle is driving, the GPS (1) sends the position information to the vehicle controller (3) in real time. When the vehicle controller (3) detects that the battery swapping machine has traveled to a preset distance range of the battery swapping station, the vehicle controller (3) controls the instrument (2) to inquire whether the user needs the battery swapping service. When the user selects the battery replacement service, a confirmation signal is sent to the vehicle controller (3) via the instrument (2).

7. The battery box replacement control method according to claim 5, characterized in that: The vehicle controller (3) controls the on-board battery swap box (4) to swap boxes according to the battery swap plan signal. Specifically, the vehicle controller (3) controls the locking structure of the on-board battery swap box unit that needs to be replaced in the on-board battery swap box (4) to unlock according to the battery swap plan signal.

8. The battery box replacement control method according to claim 5, characterized in that: The battery swap station control module (8) controls the battery swap cabinet (9) of the battery swap station to swap boxes according to the battery swap plan signal. Specifically, the battery swap station control module (8) controls the pop-up structure of the corresponding battery swap box unit in the battery swap cabinet (9) of the battery swap station according to the battery swap plan signal to pop out the battery swap box unit of the battery swap station.

9. The battery box replacement control method according to claim 5, characterized in that: The battery monitoring information includes the voltage of the on-board battery swap box unit, the battery charge state and the battery health state. When the life difference between the on-board battery swap box units exceeds the set value, the voltage difference exceeds the set value, or the charge value of a single on-board battery swap box unit is less than the set threshold, the battery swap station data processing module (7) outputs a battery swap plan signal.

10. A pure electric engineering machine, characterized in that: Equipped with the battery-swap box control system according to any one of claims 1 to 4, the pure electric engineering machinery includes an excavator and a loader.

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