New energy road cleaning and sweeping vehicle charging method and new energy road cleaning and sweeping vehicle charging device

Abstract

The embodiment of the invention discloses a new energy road cleaning and sweeping vehicle charging method and a new energy road cleaning and sweeping vehicle charging device.The method comprises the steps that a detection module detects the SOC value of a first battery pack and the SOC value of a second battery pack on a vehicle; the charging module performs charging shunting on the charging bus; the distribution module detects the temperature of each battery cell in the first battery pack, and distributes the charging current of the second battery pack to each battery cell according to the temperature of each battery cell; the energy management module performs uniform energy distribution on the current in the first battery pack according to the SOC value and the temperature value of each battery cell in the first battery pack; the energy adjusting module performs energy distribution according to the SOC value of the first battery pack and the SOC value of the second battery pack; and the detection module detects the SOC value of the first battery pack and the SOC value of the second battery pack to judge whether to finish the charging operation, and the electric quantity and the temperature of the battery cells in the first battery pack and the second battery pack can be adjusted in real time through the process.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle charging, and in particular to a charging method for a new energy road sweeper and a charging device for a new energy road sweeper and a washing machine. Background Art

[0002] Small road sweeper (new energy sanitation vehicle) is a new type of efficient cleaning equipment that integrates road vacuuming, sweeping, water spraying, garbage collection and transportation. It is a new type of efficient cleaning equipment used in outdoor environments. Electric road sweeper is suitable for outdoor cleaning in parks, sanitation, cleaning companies, property management companies, squares, universities, highways and squares.

[0003] The electrical architecture of a small road sweeper is divided into a driving system and an operating system. The chassis and upper operating system are driven by lithium batteries. Currently, the driving and operating systems of most vehicles use the same lithium battery pack to provide power. Due to the small size of the vehicle itself, when the vehicle is operating, the energy provided by the battery pack is limited, which limits the use scenarios of the vehicle.

[0004] Currently, the voltage of the three-electric system of the chassis drive of the mainstream small sweepers on the market is DC 96V, and the working voltage of the three-electric system of the mainstream operating system is 72V. If the working voltages of the two systems are unified to the same voltage value, the working voltage of one of the three-electric systems must be re-matched, and the cost of its components must be increased accordingly, reducing the cost-effectiveness of the entire vehicle.

[0005] Among the existing technical solutions, there is a charging solution that uses two charging guns, that is, the chassis system and the upper system are respectively equipped with a charging interface. When the vehicle needs to be charged, one of the battery packs is charged first. When one of them is fully charged, the other battery pack is charged. This method requires an additional set of charging interfaces, which increases the vehicle's accessories cost.

[0006] At the same time, during the charging process, personnel need to be arranged on duty. After one of the charging ports is completed, it will switch to another charging port for charging. Summary of the invention

[0007] In order to solve the problems existing in the prior art, the present invention provides a charging method for a new energy road sweeper and a charging device for a new energy road sweeper. The technical solutions adopted are as follows:

[0008] The present application provides a charging method for a new energy road sweeper, comprising the following steps:

[0009] Step 1: The detection module detects the SOC value of the first battery pack and the SOC value of the second battery pack on the vehicle;

[0010] Step 2: The charging module performs charging shunt on the charging bus according to the SOC value of the first battery pack and the SOC value of the second battery pack;

[0011] Step 3: The allocation module detects the temperature of each battery cell in the first battery pack, allocates the charging current of the first battery pack to each battery cell according to the temperature of each battery cell, and detects the temperature of each battery cell in the second battery pack, allocates the charging current of the second battery pack to each battery cell according to the temperature of each battery cell;

[0012] Step 4: the energy management module evenly distributes the current in the first battery pack according to the SOC value and temperature value of each battery cell in the first battery pack, and evenly distributes the current in the second battery pack according to the SOC value and temperature value of each battery cell in the second battery pack;

[0013] Step 5: The energy regulation module distributes energy according to the SOC value of the first battery pack and the SOC value of the second battery pack, so that the current of the first battery pack is transmitted to the second battery pack through the adapter or the current of the second battery pack is transmitted to the first battery pack through the adapter;

[0014] Step 6: The detection module detects the SOC value of the first battery pack and the SOC value of the second battery pack to determine whether to end the charging operation.

[0015] Optionally, in some embodiments of the present application, in step 1, the SOC value of the first battery pack is the overall SOC value of each battery cell in the first battery pack;

[0016] The SOC value of the second battery pack is the overall SOC value of each battery cell in the second battery pack;

[0017] The detection process includes:

[0018] Detecting whether the vehicle is in a power-off state, and when it is determined that the vehicle is in an ignition-off power-off state, directly detecting the SOC value of the first battery pack and the SOC value of the second battery pack, and generating a first battery signal based on the detected SOC value of the first battery pack and the SOC value of the second battery pack and transmitting it to the charging module;

[0019] When it is determined that the vehicle is not in the ignition-off state, the output current of the first battery pack and / or the second battery pack is detected, and the output current value is used to generate a second battery signal, which is transmitted to the charging module.

[0020] Optionally, in some embodiments of the present application, in step 2, the charging bus is connected to a car charging pile and a charging module, the charging module is provided with a first charging line and a second charging line, the first charging line is connected to the first battery pack, the second charging line is connected to the second battery pack, the charging bus is electrically connected to the first charging line and the second charging line through the charging module, and the charging module performs charging shunting on the charging bus, including:

[0021] When the charging module receives the first battery signal, the charging module performs current matching and diversion according to the ratio of the SOC value of the first battery pack to the SOC value of the second battery pack to charge the first battery pack and the second battery pack;

[0022] When the charging module receives the second battery signal, the charging module determines the output current of the first battery pack and the output current of the second battery pack. When the output current value of the first battery pack is greater than the output current value of the second battery pack, the charging current charges the second battery pack through the second charging line, disconnects the output current of the second battery pack, and increases the output current of the first battery pack.

[0023] When the output current value of the first battery pack is equal to the output current value of the second battery pack, the charging module detects the voltage values ​​of the first battery pack and the second battery pack, and distributes charging according to the voltage values ​​of the first battery pack and the second battery pack.

[0024] Optionally, in some embodiments of the present application, during the distributed charging, when the rated voltages of the first battery pack and the second battery pack are different, the charging module disconnects the charging process of the first battery pack or disconnects the charging process of the second battery pack;

[0025] When the rated voltages of the first battery pack and the second battery pack are the same, the charging module charges the first battery pack and the second battery pack simultaneously.

[0026] Optionally, in some embodiments of the present application, in step 3, the allocation module detects the temperature of each battery cell and the SOC value of the battery cell in the first battery pack or the second battery pack, and the allocation module allocates charging to each battery cell according to the SOC value of the battery cell;

[0027] When the temperature of one of the battery cells increases, the distribution module stops supplying power to the battery cell until the temperature of the battery cell decreases to resume power supply.

[0028] Optionally, in some embodiments of the present application, the distributed charging includes:

[0029] The battery management module calculates the ratio of the power corresponding to the first battery pack and the second battery pack, obtains the remaining amount of charging required for the first battery pack and the second battery pack, and distributes the current according to the required amount of charging.

[0030] Optionally, in some embodiments of the present application, in step 4, the energy management module includes a refrigerant device and a feedback device, the refrigerant device includes a refrigerant pipe, the refrigerant pipe is arranged at the top or bottom of the first battery pack, and when the temperature of the battery core increases, the refrigerant pipe cools the battery core;

[0031] The feedback device detects the temperature value and the SOC value of the battery cell, and the feedback device controls the current of each of the battery cells according to the temperature value and the SOC value of the battery cell.

[0032] Optionally, in some embodiments of the present application, the feedback device includes the distribution module.

[0033] Optionally, in some embodiments of the present application, multiple feedback devices are provided in the first battery pack and the second battery pack, each of the feedback devices is connected to multiple battery cells, the multiple battery cells and the feedback devices form a battery pack, and the multiple battery packs form the first battery pack or the second battery pack.

[0034] Optionally, in some embodiments of the present application, the energy regulation module includes a first shunt line and a second shunt line, the first shunt line is connected to the distribution module of the first battery pack, the second shunt line is connected to the distribution module of the second battery pack, and the first shunt line is connected through the adapter;

[0035] When the distribution module detects that the current value of the first battery pack is greater than the current value of the second battery pack or the temperature value of the first battery pack is greater than the temperature value of the second battery pack, the energy regulation module transfers the current value of the first battery pack to the second battery pack through the first shunt line and the second shunt line.

[0036] The embodiment of the present application also provides a new energy road sweeper charging device, which is used to execute the above-mentioned new energy road sweeper charging method, including:

[0037] A detection module, detecting an SOC value of the first battery pack and an SOC value of the second battery pack;

[0038] A charging module is connected to the charging bus, and the charging module includes an MCU unit. The MCU unit controls the current distribution and performs primary power management;

[0039] An energy management module is provided on the first battery pack and the second battery pack, and the energy management module performs secondary power management on the battery cells;

[0040] An energy regulating module is connected to the first battery pack and the second battery pack, and the energy regulating module regulates the amount of electricity between the first battery pack and the second battery pack.

[0041] Compared with the prior art, the beneficial effects of the present invention are:

[0042] In the embodiment of the present application, by providing a charging module, a distribution module, an energy management module and an energy regulation module, the power and temperature of the battery cells in the first battery pack and the second battery pack can be adjusted in real time when the car is charging, thereby improving the safety of battery cell charging and evenly distributing the energy of the charging battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 A schematic diagram of the overall process of a new energy road sweeper charging method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present application. It is understood that the drawings are only provided for reference and illustration, and are not used to limit the present application. The connection relationship shown in the drawings is only for the convenience of clear description and does not limit the connection method.

[0046] Specifically, Figure 1 As shown, a charging method for a new energy road sweeper is provided in an embodiment of the present application, which improves and optimizes the existing charging mode of new energy vehicles. Existing sweepers are equipped with two battery packs, namely a chassis battery pack and a top battery pack. The chassis battery pack provides power energy for the vehicle's driving system, and the top battery pack provides power energy for sanitation operation equipment.

[0047] For the convenience of expression, in the embodiment of the present application, the chassis battery pack is the first battery pack, and the upper battery pack is the second battery pack. This expression indicates that the technical solutions listed in the embodiment of the present application are not only applicable to washing and sweeping vehicles, but also to other new energy vehicles with two battery packs, which facilitates the expanded protection of the technical solutions in the present application.

[0048] Specifically:

[0049] Step 1 Process:

[0050] In the present application, during the charging process, the detection module is first used to detect the power values ​​of the first battery pack and the second battery pack to determine whether the charging conditions are met. The detection process is generally to determine the SOC value of the first battery pack and the SOC value of the second battery pack, wherein the SOC value of the first battery pack is the overall SOC value of each battery cell in the first battery pack; the SOC value of the second battery pack is the overall SOC value of each battery cell in the second battery pack.

[0051] When it is detected that the SOC values ​​of the first battery pack and the second battery pack are both 100%, a corresponding signal is output to the charging module, so that the charging module stops supplying power to the first battery pack and the second battery pack;

[0052] When it is detected that the SOC value of the first battery pack is less than 100% and the SOC value of the second battery pack is equal to 100%, a corresponding signal is output to the charging module, so that the charging module only charges the first battery pack and stops charging the second battery pack;

[0053] When it is detected that the SOC values ​​of the first battery pack and the second battery pack are both less than 100%, a corresponding signal is output to the charging module so that the charging module supplies power to the first battery pack and the second battery pack;

[0054] Among them, for the sake of charging safety, when the SOC values ​​of the first battery pack and the second battery pack are both greater than or equal to 90%, you can choose to stop charging or continue charging. This method can be controlled by software, and this process is not elaborated in detail in this application.

[0055] When detecting the SOC values ​​of the first battery pack and the second battery pack, in the embodiment of the present application, the discharge states thereof are also detected, specifically:

[0056] During the charging process of a car, it is inevitable that the car will not be turned off. When the car is started, a certain amount of electricity will be consumed, so the output power of the battery needs to be considered during the charging process.

[0057] In the detection process of the embodiment of the present application, the power level of the first battery pack and the second battery pack is judged. When the car is turned off, the first battery pack and the second battery pack do not output current, so that the detected power SOC value is the power value of the battery itself. At this time, the detected SOC value of the first battery pack and the SOC value of the second battery pack are used to generate a first battery signal, and the first battery signal is transmitted to the charging module;

[0058] When the car starts, the first battery pack and the second battery pack will output a certain amount of electricity, so that during detection, the output current value of the first battery pack and the second battery pack will be detected, and the output current value will generate a second battery signal, which will be transmitted to the charging module.

[0059] In the above description, it should be noted that the embodiments of the present application mainly involve the power judgment of the washing and sweeping vehicle, and the chassis battery pack corresponding to the first battery pack is the vehicle driving system, and the upper battery pack corresponding to the second battery pack provides power energy for the sanitation operation equipment. During charging, the second battery pack has no current output, and what is measured is the SOC value of the second battery pack, the SOC value of the first battery pack and the output current value.

[0060] The judgment method can be applied to the battery judgment process of the washing and sweeping vehicle in the present application, and can also be applied to the judgment process of other dual batteries.

[0061] After the power of the first battery pack and the second battery pack is determined, the process proceeds to step 2:

[0062] This process mainly distributes the charging current according to the first battery signal and the second battery signal of the charging module. The distribution needs to be coordinated with the battery management module (BMS) and the charging bus. Specifically:

[0063] The charging bus is connected to the car charging pile and the charging module. The charging module is provided with a first charging line and a second charging line. The first charging line is connected to the first battery pack, and the second charging line is connected to the second battery pack. The charging bus is electrically connected to the first charging line and the second charging line through the charging module.

[0064] The charging module performs charging current diversion on the charging bus, including processing and allocating the first battery signal and processing and allocating the second battery signal.

[0065] When the charging module receives the first battery signal, that is, the first battery pack and the second battery pack have no current output, the power is the power of the first battery pack and the second battery pack themselves, and the battery management module calculates the ratio of the power corresponding to the first battery pack and the second battery pack, and can obtain the remaining amount of charging required for the first battery pack and the second battery pack, so as to facilitate current distribution according to the required amount of charging.

[0066] Setting this distribution method can preferentially supply more current to the battery pack with a small SOC value to avoid the occurrence of charging imbalance problems.

[0067] Among them, it should be noted that when the current is distributed for power supply, it is necessary to ensure that the rated voltage values ​​corresponding to the first battery pack and the second battery pack are the same. When the rated voltage values ​​are different, distributing the current may cause battery fires. It is necessary to ensure that the charging current is transmitted at the voltage of the corresponding battery to ensure that the charging power of the corresponding batteries is the same.

[0068] like:

[0069] In the embodiment of the present application, the rated voltage value of the chassis battery pack corresponding to the first battery pack is 96V, and the rated voltage value of the upper battery pack corresponding to the second battery pack is 72V, so that the charging module cannot charge the first battery pack and the second battery pack at the same time.

[0070] Therefore, in the present application, the charging module needs to perform voltage judgment on the first battery pack and the second battery pack. When the charging module detects that the rated voltage values ​​are the same, the charging module cooperates with the BMS to distribute current to the batteries; when the charging module detects that the rated voltage values ​​are different, the charging module disconnects the charging process of the first battery pack or disconnects the charging process of the second battery pack.

[0071] In an embodiment of the present application, preferably, a transformer can also be provided on the charging module. When the rated voltages of the first battery pack and the second battery pack are different, the charging module can adjust the distributed current to the corresponding rated voltage value of the first battery pack or the second battery pack through the transformer to facilitate simultaneous charging of the first battery pack and the second battery pack.

[0072] When the charging module receives the second battery signal, that is, when the first battery pack and the second battery pack are outputting current, the charging module needs to determine the output current of the first battery pack and the output current of the second battery pack. When the output current value of the first battery pack is greater than the output current value of the second battery pack, the charging current charges the second battery pack through the second charging line, and the output current of the second battery pack needs to be disconnected, and the output current of the first battery pack is increased. The magnitude of the current increased by the first battery pack is equal to the magnitude of the current output by the second battery pack to ensure the normal operation of the vehicle.

[0073] In the embodiment of the present application, when the rated voltages of the first battery pack and the second battery pack are different, it is necessary to disconnect the power supply of the first battery pack or the second battery pack.

[0074] When the output current value of the first battery pack is equal to the output current value of the second battery pack, the charging module detects the voltage values ​​of the first battery pack and the second battery pack, and distributes charging according to the voltage values ​​of the first battery pack and the second battery pack.

[0075] The charging distribution process is the same as the above-mentioned distribution process when the charging module receives the first battery signal, so as to avoid the problem of uneven battery charging and discharging.

[0076] In the above allocation, preferably, in the present application, the charging module can cooperate with the battery management module to directly provide power to the vehicle components through the current of the charging bus, while cutting off the output process of the first battery pack and the second battery pack.

[0077] After completing the above power distribution process, proceed to step 3:

[0078] In step 3, a distribution module is provided. There are two distribution modules, and the two distribution modules respectively distribute current to the first battery pack and the second battery pack.

[0079] Specifically:

[0080] The distribution module detects the temperature of each battery cell in the first battery pack, distributes the charging current of the first battery pack to each battery cell according to the temperature of each battery cell, and detects the temperature of each battery cell in the second battery pack, distributes the charging current of the second battery pack to each battery cell according to the temperature of each battery cell.

[0081] In the above, the first battery pack and the second battery pack are each provided with a plurality of battery blocks (i.e., battery cells), and the plurality of battery blocks each include independent positive and negative electrodes. When the first battery pack or the second battery pack is charged, each battery block will be charged, and each battery block has a corresponding charging circuit, so that the distribution module needs to distribute the current to each charging circuit.

[0082] The allocation process mainly allocates current by monitoring the temperature of each battery cell and the SOC value of the battery cell. The priority of the allocation judgment is that the temperature judgment is greater than the SOC value judgment, specifically:

[0083] During initial charging, the distribution module will charge all the cells of the first battery pack and / or the second battery pack. When charging for a certain period of time, the temperature of each cell will be different. When the temperature of the cell rises, it will affect the charging efficiency of the cell and the charging efficiency of the surrounding cells, so that the cell needs to be cooled down. In the present application, the cooling treatment is mainly carried out in two ways. The first is to cut off the power to the cell to avoid the temperature of the cell from rising until the temperature of the cell drops to a normal temperature and continue to supply power. The second is to set an energy management module in step 4. The energy management module includes a refrigerant device and a feedback device. The refrigerant device includes a refrigerant pipe. The refrigerant pipe is set at the top or bottom of the first battery pack or the second battery pack. When the temperature of the cell rises, the refrigerant pipe cools the cell.

[0084] The feedback device detects the temperature value and the SOC value of the battery cell, and controls the current of each battery cell according to the temperature value and the SOC value of the battery cell.

[0085] The feedback device mentioned above includes the distribution module mentioned above.

[0086] Preferably, in the above process, the feedback device can also be set as other distribution modules. When there are a large number of cells in the first battery pack and the distribution module cannot be used for accurate distribution, all cells in the first battery pack can be divided into multiple groups, each group includes multiple cells, each group is provided with a corresponding feedback device, multiple cells and the feedback device form a battery pack, and multiple battery packs form the first battery pack or the second battery pack. The feedback device only detects and adjusts the power of the group of cells, which is convenient for controlling the power supply in each group of cells and improving the charging efficiency in the first battery pack.

[0087] In the present application, the second battery pack may also be provided with other distribution modules.

[0088] The refrigerant in the refrigerant device mentioned above includes but is not limited to environmentally friendly refrigerants, such as HFOs (such as R134a), HFOs mixtures (such as R407C) and natural refrigerants (such as R290).

[0089] When charging the battery, it is necessary to determine the overall battery power of the first battery pack and the second battery pack to facilitate current management, so that in step 5, an energy regulation module is provided, the energy regulation module mainly includes a first shunt line and a second shunt line, the first shunt line is connected to the distribution module of the first battery pack, the second shunt line is connected to the distribution module of the second battery pack, and the first shunt line is connected through an adapter;

[0090] When the distribution module detects that the current value of the first battery pack is greater than the current value of the second battery pack or the temperature value of the first battery pack is greater than the temperature value of the second battery pack, the energy regulation module transfers the current value of the first battery pack to the second battery pack through the first shunt line and the second shunt line to perform energy regulation on the first battery pack and the second battery pack to avoid the problem of too much power in the first battery pack and too little power in the second battery pack.

[0091] Finally, in step 6, the detection module detects the SOC value of the first battery pack and the SOC value of the second battery pack to determine whether to end the charging operation.

[0092] The present application provides a charging device for a new energy road sweeper, which mainly comprises: a detection module for detecting the SOC value of a first battery pack and the SOC value of a second battery pack;

[0093] A charging module is connected to the charging bus, and the charging module includes an MCU unit. The MCU unit controls the current distribution and performs primary power management;

[0094] An energy management module is provided on the first battery pack and the second battery pack, and the energy management module performs secondary power management on the battery cells;

[0095] An energy regulating module is connected to the first battery pack and the second battery pack, and the energy regulating module regulates the amount of electricity between the first battery pack and the second battery pack.

[0096] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A charging method for a new energy road sweeper, characterized in that: The following steps are involved: Step 1: The detection module detects the SOC value of the first battery pack and the SOC value of the second battery pack on the vehicle; Step 2: The charging module performs charging shunt on the charging bus according to the SOC value of the first battery pack and the SOC value of the second battery pack; Step 3: The allocation module detects the temperature of each battery cell in the first battery pack, allocates the charging current of the first battery pack to each battery cell according to the temperature of each battery cell, and detects the temperature of each battery cell in the second battery pack, allocates the charging current of the second battery pack to each battery cell according to the temperature of each battery cell; Step 4: the energy management module evenly distributes the current in the first battery pack according to the SOC value and temperature value of each battery cell in the first battery pack, and evenly distributes the current in the second battery pack according to the SOC value and temperature value of each battery cell in the second battery pack; Step 5: The energy regulation module distributes energy according to the SOC value of the first battery pack and the SOC value of the second battery pack, so that the current of the first battery pack is transmitted to the second battery pack through the adapter or the current of the second battery pack is transmitted to the first battery pack through the adapter; Step 6: The detection module detects the SOC value of the first battery pack and the SOC value of the second battery pack to determine whether to end the charging operation.

2. A charging method for a new energy road sweeper according to claim 1, characterized in that: In the step 1, the SOC value of the first battery pack is the overall SOC value of each battery cell in the first battery pack; The SOC value of the second battery pack is the overall SOC value of each battery cell in the second battery pack; The detection process includes: Detecting whether the vehicle is in a power-off state, and when it is determined that the vehicle is in an ignition-off power-off state, directly detecting the SOC value of the first battery pack and the SOC value of the second battery pack, and generating a first battery signal based on the detected SOC value of the first battery pack and the SOC value of the second battery pack and transmitting it to the charging module; When it is determined that the vehicle is not in the ignition-off state, the output current of the first battery pack and / or the second battery pack is detected, and the output current value is used to generate a second battery signal, which is transmitted to the charging module.

3. A charging method for a new energy road sweeper according to claim 2, characterized in that: In step 2, the charging bus is connected to a car charging pile and a charging module, the charging module is provided with a first charging line and a second charging line, the first charging line is connected to the first battery pack, the second charging line is connected to the second battery pack, the charging bus is electrically connected to the first charging line and the second charging line through the charging module, and the charging module performs charging shunt on the charging bus, including: When the charging module receives the first battery signal, the charging module performs current matching and diversion according to the ratio of the SOC value of the first battery pack to the SOC value of the second battery pack to charge the first battery pack and the second battery pack; When the charging module receives the second battery signal, the charging module determines the output current of the first battery pack and the output current of the second battery pack. When the output current value of the first battery pack is greater than the output current value of the second battery pack, the charging current charges the second battery pack through the second charging line, disconnects the output current of the second battery pack, and increases the output current of the first battery pack. When the output current value of the first battery pack is equal to the output current value of the second battery pack, the charging module detects the voltage values ​​of the first battery pack and the second battery pack, and distributes charging according to the voltage values ​​of the first battery pack and the second battery pack.

4. A charging method for a new energy road sweeper according to claim 3, characterized in that: During the distributed charging, when the rated voltages of the first battery pack and the second battery pack are different, the charging module disconnects the charging process of the first battery pack or disconnects the charging process of the second battery pack; When the rated voltages of the first battery pack and the second battery pack are the same, the charging module charges the first battery pack and the second battery pack simultaneously.

5. A charging method for a new energy road sweeper according to claim 1, characterized in that: In step 3, the allocation module detects the temperature and SOC value of each battery cell in the first battery pack or the second battery pack, and the allocation module allocates charging to each battery cell according to the SOC value of the battery cell; When the temperature of one of the battery cells increases, the distribution module stops supplying power to the battery cell until the temperature of the battery cell decreases to resume power supply.

6. A charging method for a new energy road sweeper according to claim 5, characterized in that: In step 4, the energy management module includes a refrigerant device and a feedback device, the refrigerant device includes a refrigerant pipeline, the refrigerant pipeline is arranged at the top or bottom of the first battery pack, and when the temperature of the battery core increases, the refrigerant pipeline cools the battery core; The feedback device detects the temperature value and the SOC value of the battery cell, and the feedback device controls the current of each of the battery cells according to the temperature value and the SOC value of the battery cell.

7. A charging method for a new energy road sweeper according to claim 6, characterized in that: The feedback device includes the distribution module.

8. A charging method for a new energy road sweeper according to claim 6, characterized in that: The feedback device is provided in plurality in the first battery pack and the second battery pack, each of the feedback devices is connected to a plurality of battery cells, a plurality of the battery cells and the feedback device form a battery pack, and a plurality of the battery packs form the first battery pack or the second battery pack.

9. A charging method for a new energy road sweeper according to claim 1, characterized in that: The energy regulation module includes a first shunt line and a second shunt line, the first shunt line is connected to the distribution module of the first battery pack, the second shunt line is connected to the distribution module of the second battery pack, and the first shunt line is connected through the adapter; When the distribution module detects that the current value of the first battery pack is greater than the current value of the second battery pack or the temperature value of the first battery pack is greater than the temperature value of the second battery pack, the energy regulation module transfers the current value of the first battery pack to the second battery pack through the first shunt line and the second shunt line.

10. A charging device for a new energy road sweeper, used to execute a charging method for a new energy road sweeper as claimed in any one of claims 1 to 9, characterized in that: Included are: A detection module, detecting an SOC value of the first battery pack and an SOC value of the second battery pack; A charging module is connected to the charging bus, and the charging module includes an MCU unit. The MCU unit controls the current distribution and performs primary power management; An energy management module is provided on the first battery pack and the second battery pack, and the energy management module performs secondary power management on the battery cells; An energy regulating module is connected to the first battery pack and the second battery pack, and the energy regulating module regulates the amount of electricity between the first battery pack and the second battery pack.

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