Charging, discharging and battery swapping all-in-one machine system of commercial vehicle battery swapping station

Abstract

The utility model discloses a charging, discharging and battery swapping all-in-one machine system of a commercial vehicle battery swapping station. The system comprises the following units: a cloud platform unit; a V2G charging unit; a charging control unit; an AC power distribution unit; a DC power switching unit; an off-station charging gun; a heat dissipation unit; a communication end interface of the charging control unit is connected with the cloud platform unit to establish communication, a control end interface of the charging control unit is connected with a V2G charging unit and an off-station charging gun, an input port of the off-station charging gun is connected with a battery pack through the V2G charging unit, and an output port of the off-station charging gun is connected with a vehicle for charging. According to the utility model, the integrated charging, switching and discharging all-in-one machine is realized through software control and hardware circuit interlocking, the bidirectional charging module is used, the battery electric quantity is discharged under the condition of power failure of a power grid, normal operation of equipment is ensured, flexible distribution is carried out, an in-station battery and an out-station terminal can be charged at the same time, and an off-grid discharging function is realized; the device can be used as a discharge machine.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy battery swap stations, and specifically relates to an integrated charging, discharging and battery swapping system for a commercial vehicle battery swap station. Background Art

[0002] In the new energy battery swapping industry, the main 380V three-phase power source for battery swapping equipment is directly supplied by the external power grid through a box-type transformer. In the traditional mode, this method has the following disadvantages:

[0003] (1) Currently, the chargers used in commercial vehicle battery swap stations can only charge the batteries in one station and cannot directly charge vehicles outside the station. The functions are relatively simple and the utilization rate is low.

[0004] (2) Some chargers have a reserved charging terminal hardware interface, and an external charging terminal is required to charge external vehicles;

[0005] (3) Traditional chargers cannot discharge the battery and can no longer charge vehicles outside the station at the same time;

[0006] (4) Traditional chargers cannot be used off-grid and can only be powered by external mains power. Utility Model Content

[0007] In order to solve the above technical problems, a technical solution adopted by the present utility model is as follows:

[0008] A charging, discharging and battery swapping integrated system for a commercial vehicle battery swapping station, comprising the following units:

[0009] Cloud platform unit: used for cloud information interaction;

[0010] V2G charging unit: used to convert AC power into DC power or invert DC power into AC power;

[0011] Charging control unit: used to control charging, discharging and replacement with the V2G charging unit, battery pack, vehicle and cloud platform unit;

[0012] AC power distribution unit: used to supply power to the charging control unit and V2G charging unit;

[0013] DC power switching unit: used for switching control of V2G charging unit;

[0014] Off-site charging gun: charges and discharges external vehicles;

[0015] cooling unit;

[0016] The communication end interface of the charging control unit is connected to the cloud platform unit to establish communication, the control end interface of the charging control unit is connected to the V2G charging unit and the off-station charging gun, the off-station charging gun input port is connected to the battery pack through the V2G charging unit, and the off-station charging gun output port is connected to the vehicle for charging.

[0017] Furthermore, the charging control unit establishes communication with the cloud platform unit via wireless signals, and the wireless signals include 4G and 5G.

[0018] Furthermore, the charging control unit establishes communication with the V2G charging unit via CAN communication, and the charging control unit is connected to the charging gun outside the station via wires.

[0019] Furthermore, a plurality of battery interfaces are provided between the off-site charging gun and the battery pack, and the battery interfaces are controlled by a DC power switching unit.

[0020] Furthermore, the DC power switching unit is a plurality of relays arranged in the line. Every three groups of V2G charging units connected in parallel are recorded as a group of bidirectional transmission modules. A group of relays is provided between the two groups of bidirectional transmission modules, which is recorded as KM1. One group of bidirectional transmission modules is connected to the battery pack, and a relay is provided between the bidirectional transmission module and the battery pack, which is recorded as KM3. Another group of bidirectional transmission modules is connected to the charging gun outside the station, and a relay is provided between the bidirectional transmission module and the charging gun outside the station, which is recorded as KM4. The relays between the first and second groups of bidirectional transmission modules are recorded as KM2, the relay between the bidirectional transmission module and the battery pack in the next group is recorded as KM5, and the relay between the bidirectional transmission module and the charging gun outside the station is recorded as KM6.

[0021] When KM1, KM2, KM3, and KM5 are closed and KM4 and KM6 are disconnected, the battery can be charged or discharged;

[0022] When KM1, KM2, KM4, and KM6 are closed and KM3 and KM5 are disconnected, the charging gun can be used to charge or discharge vehicles outside the station;

[0023] When KM3, KM4, KM5, and KM6 are energized and KM1 and KM2 are disconnected, the battery and vehicles outside the station can be charged at the same time.

[0024] Beneficial effects of the utility model:

[0025] 1. This utility model achieves an integrated charging, replacing and discharging machine through software control and hardware circuit interlocking. It uses a bidirectional charging module and supports discharging the battery power in the event of a power outage to ensure the normal operation of the equipment. It can be flexibly distributed and can charge the batteries inside the station and the terminals outside the station at the same time. It also has an off-grid discharge function and can be used as a discharge machine.

[0026] 2. The utility model can release the electric energy in the battery in the battery swap station or the vehicle battery to supply energy to other equipment or directly connect to the grid; at the same time, it has an independent heat dissipation duct, which has a better heat dissipation effect.

[0027] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the connection principle of the utility model system;

[0030] Figure 3 This is a schematic diagram of the strategic control principle of the utility model;

[0031] Description of reference numerals:

[0032] 1. Cloud platform unit; 2. V2G charging unit; 21. Bidirectional transmission module; 3. Charging control unit; 4. AC power distribution unit; 5. DC power switching unit; 6. Off-site charging gun; 7. Heat dissipation unit. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention. Specific embodiment:

[0035] like Figure 1-3 The illustrated integrated charging and discharging battery swapping system for a commercial vehicle battery swapping station includes the following units:

[0036] Cloud platform unit 1: used for cloud information exchange; specifically, the charging control unit 3 establishes communication with the cloud platform unit 1 via wireless signals, including 4G and 5G wireless signals. It also includes a heat dissipation unit 7; the heat dissipation unit 7 is used for heat dissipation;

[0037] V2G charging unit 2: used to convert AC power into DC power or invert DC power into AC power;

[0038] Charging control unit 3: used to control charging, discharging and replacement with the V2G charging unit, battery pack, vehicle and cloud platform unit; specifically, the communication end interface of the charging control unit 3 is connected to the cloud platform unit 1 to establish communication, and the control end interface of the charging control unit 3 is connected to the V2G charging unit 2 and the off-station charging gun 6. The input port of the off-station charging gun 6 is connected to the battery pack through the V2G charging unit 2, and the output port of the off-station charging gun 6 is connected to the vehicle for charging.

[0039] AC power distribution unit 4: used to supply power to the charging control unit and V2G charging unit;

[0040] DC power switching unit 5: used for switching control of the V2G charging unit;

[0041] Off-site charging gun 6: Charges and discharges external vehicles. Specifically, the charging control unit 3 communicates with the V2G charging unit 2 via CAN communication, and the charging control unit 3 and off-site charging gun 6 are connected by wires. Several battery interfaces are provided between the off-site charging gun 6 and the battery pack, and these battery interfaces are controlled by the DC power switching unit 5.

[0042] Specific policy control:

[0043] like Figure 3 As shown, the DC power switching unit 5 is a plurality of relays arranged in the line. Every three groups of V2G charging units 2 connected in parallel are recorded as a group of bidirectional transmission modules 21. A group of relays is provided between the two groups of bidirectional transmission modules 21, which is recorded as KM1. One group of bidirectional transmission modules 21 is connected to the battery pack, and a relay is provided between the bidirectional transmission module 21 and the battery pack, which is recorded as KM3. Another group of bidirectional transmission modules 21 is connected to the off-station charging gun 6, and a relay is provided between the bidirectional transmission module 21 and the off-station charging gun 6, which is recorded as KM4. The relays between the first and second groups of bidirectional transmission modules 21 are recorded as KM2, the relay between the bidirectional transmission module 21 and the battery pack in the next group is recorded as KM5, and the relay between the bidirectional transmission module 21 and the off-station charging gun 6 is recorded as KM6.

[0044] When KM1, KM2, KM3, and KM5 are closed and KM4 and KM6 are disconnected, the battery can be charged or discharged;

[0045] When KM1, KM2, KM4, and KM6 are closed and KM3 and KM5 are disconnected, the charging gun can be used to charge or discharge vehicles outside the station;

[0046] When KM3, KM4, KM5, and KM6 are energized and KM1 and KM2 are disconnected, the battery and vehicles outside the station can be charged at the same time, or the battery power can be discharged to charge vehicles outside the station; the power of vehicles outside the station can also be discharged to charge the battery inside the station, or the power of the battery inside the station and vehicles outside the station can be discharged and connected to the grid to charge other equipment on the same bus.

[0047] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A charging and discharging integrated battery swapping system for commercial vehicle battery swapping stations, characterized in that :Includes the following units: Cloud platform unit (1): used for cloud information interaction; V2G charging unit (2): used for converting AC power into DC power or inverting DC power into AC power; Charging control unit (3): used to control charging, discharging and replacement with the V2G charging unit, battery pack, vehicle and cloud platform unit; AC power distribution unit (4): used to supply power to the charging control unit and the V2G charging unit; DC power switching unit (5): used for switching control of the V2G charging unit; Off-site charging gun (6): charges and discharges external vehicles; heat dissipation unit (7); The communication end interface of the charging control unit (3) is connected to the cloud platform unit (1) to establish communication, the control end interface of the charging control unit (3) is connected to the V2G charging unit (2) and the off-station charging gun (6), the input port of the off-station charging gun (6) is connected to the battery pack through the V2G charging unit (2), and the output port of the off-station charging gun (6) is connected to the vehicle for charging.

2. The integrated charging, discharging and battery swapping system for a commercial vehicle battery swapping station according to claim 1 is characterized in that: The charging control unit (3) and the cloud platform unit (1) establish communication via wireless signals, and the wireless signals include 4G and 5G.

3. The integrated charging, discharging and battery swapping system for a commercial vehicle battery swapping station according to claim 1 is characterized in that: The charging control unit (3) and the V2G charging unit (2) establish communication via CAN communication, and the charging control unit (3) and the off-station charging gun (6) are connected via wires.

4. The integrated charging, discharging and battery swapping system for a commercial vehicle battery swapping station according to claim 1 is characterized in that: A plurality of battery interfaces are provided between the off-station charging gun (6) and the battery pack, and the battery interfaces are controlled by a DC power switching unit (5).

5. The integrated charging, discharging and battery swapping system for a commercial vehicle battery swapping station according to claim 1 is characterized in that: The DC power switching unit (5) is a plurality of relays arranged in the circuit. Each three groups of V2G charging units (2) connected in parallel are recorded as a group of bidirectional transmission modules (21). A group of relays is provided between the two groups of bidirectional transmission modules (21), which is recorded as KM1. One group of bidirectional transmission modules (21) is connected to the battery pack, and a relay is provided between the bidirectional transmission module (21) and the battery pack, which is recorded as KM3. Another group of bidirectional transmission modules (21) is connected to the charging gun (6) outside the station, and a relay is provided between the bidirectional transmission module (21) and the charging gun (6) outside the station, which is recorded as KM4. The relays between the two groups of bidirectional transmission modules (21) are recorded as KM2, the relay between the bidirectional transmission module (21) and the battery pack in the next group is recorded as KM5, and the relay between the bidirectional transmission module (21) and the charging gun (6) outside the station is recorded as KM6. When KM1, KM2, KM3, and KM5 are closed and KM4 and KM6 are disconnected, the battery can be charged or discharged; When KM1, KM2, KM4, and KM6 are closed and KM3 and KM5 are disconnected, the charging gun can be used to charge or discharge vehicles outside the station; When KM3, KM4, KM5, and KM6 are energized and KM1 and KM2 are disconnected, the battery and vehicles outside the station can be charged at the same time.

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