Automobile charging method capable of autonomously distributing power based on charging pile

Abstract

The invention relates to an automobile charging method capable of autonomously distributing power based on a charging pile, and belongs to the technical field of charging piles. Comprising the following steps: when a vehicle is accessed, judging whether distributable power exists or not; and when the distributable power exists, if the default distribution power mode of the system is selected, flexible distribution is carried out on the vehicle selecting the default distribution power mode of the system according to the distributable power, if the autonomous distribution power mode is selected, the power needing to be exclusively occupied is selected according to the distributable power, and the remaining distributable power is calculated. The charging pile power distribution mode under the condition of one machine and multiple guns is optimized, the accessed vehicle enjoys the charging power exclusive right, and the charging requirement under the special condition is met.

Description

Technical Field

[0001] The invention relates to a car charging method capable of autonomously allocating power based on a charging pile, belonging to the technical field of charging piles. Background Art

[0002] At present, mainstream new energy vehicle charging pile products can provide a maximum charging current between 250-300A. Based on the 400V platform architecture of conventional passenger cars, the maximum power that can be adapted is 120KW. Therefore, most of the charging pile products on the market are 120KW, but this 120KW charging pile is usually designed with dual charging guns. If two cars are charged at the same time, the power that can be allocated to each car is limited, that is, it cannot enjoy full-power charging. Even the mature high-power split charging pile with multiple guns in one machine has a charging strategy that is flexibly allocated according to the number of connected charging users, to ensure that each charging gun connected to the system can be charged. When all its charging guns are connected at the same time, they cannot enjoy full-power charging at the same time.

[0003] The power allocation strategy of existing mainstream charging piles is to ensure that every gun connected to the system can be charged, such as Figure 1 As shown, the system starts to run. After the system is initialized, it determines whether there is a car connected. If there is a car connected, it enters the user confirmation to start the charging module, otherwise it waits for the car to connect and then judges again. When the user confirms to start charging, the power is allocated. If the power is occupied by other users, the system will reallocate it and start charging until the charging is completed. The vehicle with priority access will be allocated a higher power when there are no other vehicles. However, if there are other vehicles connected during the charging project, it will be reallocated according to the existing strategy, and it cannot be guaranteed that the original vehicle will always enjoy priority or exclusive rights.

[0004] The Chinese patent application document with publication number CN107139750A proposes a constant voltage type power dynamic distribution charging device. In the scheme, the charging management system obtains the charging power information of the connected vehicle and compares it with the difference between the maximum output power and the actual output power of the charging pile. If the remaining power of the charging pile reflected by the difference is sufficient, charging is allowed. At the same time, slow charging options can be set through the charging window, specifically 80% power charging, 60% power charging and 40% power charging. However, the above scheme allows the connected vehicle to charge only if the remaining power of the charging pile meets the full power charging of the vehicle. The vehicle has the right to choose slow charging. The right to independently choose the current allocable power of the charging pile is not fully granted to the user, resulting in the failure to meet the charging needs in special circumstances and the failure to meet more charging operation business models. Summary of the invention

[0005] The purpose of the present invention is to provide a car charging method based on a charging pile that can autonomously allocate power, so as to solve the problem that the connected vehicle cannot enjoy exclusive rights and cannot meet the charging needs under special circumstances, and cannot meet more charging operation business models.

[0006] To achieve the above object, the solution of the present invention includes: The present invention provides a car charging method capable of autonomously allocating power based on a charging pile, comprising the following steps: when a vehicle is connected, determining whether there is allocable power; when there is allocable power, if a system default power allocation mode is selected, performing power flexible allocation according to the allocable power for the vehicle that selects the system default power allocation mode, and if an exclusive mode is selected, charging the vehicle that selects the exclusive mode according to the exclusive power according to the size of the selected exclusive power.

[0007] Furthermore, after the vehicle is connected, before determining whether there is allocable power, a confirmation of whether to charge is provided, and after receiving the user's confirmation to start charging instruction, it is determined whether there is allocable power.

[0008] Furthermore, when the connected vehicle selects the system's default method for allocating power, charging is performed based on the allocable power and in accordance with a maximum rated power of the charging gun that does not exceed the maximum rated power.

[0009] Furthermore, if a later connected vehicle appears and the first connected vehicle selects the system default method to allocate power, the difference between the current charging power of the first connected vehicle and the minimum rated power of the charging gun is included in the allocatable power of the later connected vehicle.

[0010] Furthermore, after the vehicle is charged, the occupied power is released and the allocatable power is reset.

[0011] Furthermore, the system default power distribution mode or exclusive mode is selected through the human-computer interaction interface.

[0012] The present invention provides a method for charging a car based on a charging pile that can autonomously allocate power, which ensures that the connected vehicle enjoys exclusive charging power and meets the charging needs under special circumstances. In actual charging scenarios, it can provide users with more humane choices based on the existing flexible allocation, allowing users to autonomously choose fast or slow charging methods, and in actual operation, if users choose to monopolize more power, corresponding service fees can be charged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the original charging pile power distribution flow chart; Figure 2 It is a flowchart of autonomous power distribution based on charging piles of the present invention. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail in a clear and complete manner in conjunction with the accompanying drawings and embodiments.

[0015] The idea of ​​the present invention is to determine whether there is allocatable power when a vehicle is connected; when there is allocatable power, if the system default power distribution mode is selected, the power is flexibly distributed to the vehicle that selects the system default power distribution mode according to the allocatable power, and if the exclusive mode is selected, the vehicle that selects the exclusive mode is charged according to the exclusive power according to the size of the selected exclusive power. It is guaranteed that the connected vehicle enjoys the exclusive right to charging power and meets the charging needs in special circumstances. In actual charging scenarios, users can be provided with more humane choices on the basis of existing flexible allocation, allowing users to independently choose fast or slow charging methods, and in actual operations, if users choose to monopolize more power, corresponding service fees can be charged.

[0016] Embodiment of a vehicle charging method capable of autonomously allocating power based on a charging pile: The present invention provides a car charging method based on a charging pile with autonomous power allocation, which presets the user's autonomous selection power, that is, after the vehicle is connected to the system, the user can independently select the required power, or even monopolize all resources. At this time, the charging pile must ensure that the power occupied by the user before the end is not reallocated, and if a new charging vehicle is connected subsequently, it must first be determined whether there is remaining allocatable power; after each charging is completed, the remaining allocatable power of the current charging pile needs to be recalculated.

[0017] The present invention can be implemented through software strategies, and users can submit self-selected power or seize more or even the entire resources to the power distribution unit through the operation interface or network interface of the charging pile host.

[0018] Specific strategy process such as Figure 2 As shown, the steps are as follows: (1) The system starts running. First, the system is initialized and whether a car is connected is determined. If a car is connected, it proceeds to step (2). Otherwise, it continues this step and waits for a car to connect. (2) The user confirms to start charging and determines whether there is allocable power. If there is allocable power, proceed to step (3); (3) Whether the user selects power exclusivity. If so, proceed to step (5); otherwise, proceed to step (4); (4) Allocate power according to the system default method and proceed to step (7); (5) Set the current charging gun exclusive mode, calculate and reset the remaining allocatable power of the current charging pile, and proceed to step (6); (6) Allocate the power according to the power selected by the user and proceed to step (7); (7) Charging starts, and after charging is completed, the process proceeds to step (8); (8) Release the power occupied by the charging gun, calculate and reset the remaining allocatable power of the current charging pile, go to step (2), continue waiting for the car to connect, and repeat the process.

[0019] In step (4), when the connected vehicle selects the system default method for power allocation, it is charged according to the available power and does not exceed the maximum rated power of the charging gun. If a later connected vehicle appears, the difference between the current charging power of the vehicle that selects the system default method for power allocation and the minimum rated power of the charging gun is included in the available power of the later connected vehicle. For all vehicles that select the system default method for power allocation, flexible allocation is performed according to the number of connected vehicles.

[0020] In step (5), the exclusive mode of the charging gun can autonomously select a charging power that does not exceed the maximum rated power of the charging gun according to the needs of the connected vehicle, and perform fast or slow charging according to user needs. The user has the exclusive right to select the power to ensure that it will not be reallocated before charging is completed.

[0021] The following takes a charging pile with dual charging guns as an example to introduce the charging process of the method of the present invention.

[0022] For a 120kW charging pile with dual charging guns, one situation is that after the first vehicle is connected, if the user chooses exclusive power, the exclusive power shall not exceed the maximum rated power of 120kW for charging with the charging gun; during the charging process of the first vehicle, the second vehicle is connected. If the user of the first vehicle chooses exclusive power of 120kW, there is no allocable power, and the second vehicle needs to wait for the first vehicle to be charged or find other charging piles. If the user of the first vehicle chooses exclusive power of 80kW (or chooses exclusive power of a larger power, but according to the battery status, the battery management system only requests a charging power of 80kW), then the allocable power of the second vehicle is 40kW. If the second vehicle selects the system default mode, 40kW power will be used to charge the second vehicle on demand according to the vehicle demand information. If the second vehicle selects exclusive mode, it can choose to monopolize power not exceeding 40kW.

[0023] Another situation is that after the first vehicle is connected, if the user selects the system default mode, according to the vehicle demand information, the charging power shall not exceed the maximum rated power of the charging gun of 120kW for charging; during the charging process of the first vehicle, the second vehicle is connected, and the power available for charging the second vehicle is 90kW (assuming that the minimum rated power of the charging gun is 30kW, the minimum rated power must be reserved for the first vehicle to ensure charging of the first vehicle). If the user of the second vehicle chooses exclusive power, he can choose to monopolize no more than 90kW. If the second vehicle selects the system default mode, the charging power of the first and second vehicles will be flexibly allocated according to the vehicle demand information.

[0024] The present invention provides a method for charging a car that can autonomously allocate power based on a charging pile, which can meet the charging needs in special situations. For example, special vehicles, including ambulances, police cars and fire trucks, are frequently on emergency missions and need to shorten the vehicle charging time as much as possible. The present invention provides exclusive power rights during charging to ensure fast charging of special vehicles. Alternatively, a new charging operation business model can be proposed based on the method of the present invention, providing users with the ability to autonomously choose a power allocation mode. Users have the right to choose fast or slow charging. Users can pay the corresponding service fee to choose to monopolize more power, and the power of the charging pile is fully utilized, ensuring full utilization of the power of the charging pile.

Claims

1. A method for charging a car based on a charging pile and capable of autonomously allocating power, characterized in that: The method comprises the following steps: when a vehicle is connected, determining whether there is allocatable power; when there is allocatable power, if the system default allocatable power mode is selected, flexibly allocating power to the vehicle that selects the system default allocatable power mode according to the allocatable power; if the exclusive mode is selected, charging the vehicle that selects the exclusive mode according to the size of the selected exclusive power is completed according to the exclusive power.

2. The method for charging a car with autonomous power distribution based on a charging pile according to claim 1, characterized in that: After the vehicle is connected, before determining whether there is allocable power, it also provides confirmation whether to charge. After receiving the user's confirmation to start charging, it determines whether there is allocable power.

3. The method for charging a car with autonomous power distribution based on a charging pile according to claim 1, characterized in that: When the vehicle is connected and the system selects the default method to allocate power, charging is performed based on the available power and not exceeding the maximum rated power of the charging gun.

4. The method for charging a car with autonomous power distribution based on a charging pile according to claim 1, characterized in that: If a vehicle connects later and the vehicle that connects first chooses the system's default method to allocate power, the difference between the current charging power of the vehicle that connects first and the minimum rated power of the charging gun will be included in the allocatable power of the vehicle that connects later.

5. The method for charging a car with autonomous power distribution based on a charging pile according to claim 1, characterized in that: After the vehicle is charged, the occupied power is released and the allocatable power is reset.

6. The method for charging a car with autonomous power distribution based on a charging pile according to claim 1, characterized in that: Select the system default power allocation mode or exclusive mode through the human-computer interaction interface.

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