Large-electric-quantity mobile fast charging equipment with double-branch switchable power supply

Abstract

The double-branch power-supply-switchable large-electric-quantity mobile fast charging device provided by the utility model is used as an independent power supply circuit, does not need an external power supply, and can move as a whole; a replaceable low-voltage power supply (a replaceable battery) is adopted for the power supply side of the direct-current charger, so that the full charge time of equipment is shortened; the power supply battery is selected by switching the first battery replacement battery system and the second battery replacement battery system, so that the charging efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery charging, and in particular to a large-capacity mobile fast-charging device with dual-branch switchable power supplies. Background Art

[0002] With the vigorous development of new energy vehicles, the mileage of new energy vehicles is constantly breaking through, and the power required for full charging is increasing. However, due to the uneven distribution of fixed charging piles and the difficulty in finding a charging pile during holidays, charging anxiety is becoming more and more prominent. Existing mobile charging technology has problems such as small power, slow charging speed, and low charging efficiency of the charging device itself. Utility Model Content

[0003] The utility model aims to provide a large-capacity mobile fast-charging device with a dual-branch switchable power supply that overcomes the above-mentioned problems or at least partially solves the above-mentioned problems.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is specifically implemented as follows:

[0005] The utility model provides a large-capacity mobile fast charging device with a dual-branch switchable power supply, comprising: a first switch, a low-voltage power supply, a DC charger, a first battery replacement battery system, a second battery replacement battery system, a high-voltage distribution box and a DCDC module; wherein:

[0006] The low-voltage power supply is electrically connected to the DCDC module and the DC charger respectively, and is used to provide low-voltage normal electricity;

[0007] The first switch is electrically connected to the low-voltage power supply and is used to control the opening and closing of the low-voltage power supply. When the first switch is closed, the low-voltage power supply provides low-voltage normal power to the DC charger and the first battery replacement battery system and the second battery replacement battery system. When the first switch is disconnected, the system is powered off.

[0008] The DCDC module is electrically connected to the DC charger;

[0009] The DC charger is electrically connected to the high-voltage distribution box, the first battery exchange battery system and the second battery exchange battery system, respectively, and is used to provide a low-voltage normal power interface for the first battery exchange battery system and the second battery exchange battery system, and to control the first battery exchange battery system to charge an external device or the second battery exchange battery system to charge an external device.

[0010] Wherein, the low-voltage power supply is a 24V lithium battery.

[0011] Wherein, the high voltage distribution box includes: a high voltage output interface, a first battery high voltage interface, a second battery high voltage interface, a fourth switch, a fifth switch, a sixth switch and a seventh switch; wherein:

[0012] The first battery high voltage interface is connected to the high voltage output interface and the sixth switch and the seventh switch respectively through the fourth switch and the fifth switch;

[0013] The second battery high voltage interface is connected to the high voltage output interface and the fourth switch and the fifth switch through a sixth switch and a seventh switch, respectively.

[0014] Wherein, the first battery replacement system includes: a first battery low voltage interface, a first battery high voltage output and a first battery charging socket;

[0015] The first battery low voltage interface is electrically connected to the DC charger;

[0016] The first battery high voltage output is electrically connected to the first battery high voltage interface of the high voltage distribution box;

[0017] The second battery low voltage interface is electrically connected to the DC charger;

[0018] The second battery high voltage output is electrically connected to the second battery high voltage interface of the high voltage distribution box.

[0019] Wherein, the DCDC module is a 24V to 12V DCDC module.

[0020] Wherein, the DC charger comprises: a charger control board, a charger high voltage input interface and a charger internal high voltage circuit;

[0021] The DC charger supplies power to the charger control board via the DCDC module;

[0022] The charger control board selects the first battery exchange battery system for power supply by controlling the second switch to close, selects the second battery exchange battery system for power supply by controlling the third switch to close, controls the opening and closing of the fourth switch, the fifth switch, the sixth switch and the seventh switch in the high-voltage distribution box, and connects the first battery high-voltage output of the first battery exchange battery system to the high-voltage input interface of the DC charger; or connects the second battery high-voltage output of the second battery exchange battery system to the high-voltage input interface of the DC charger.

[0023] Among them, when the high-voltage input interface of the DC charger has high voltage, the high voltage is connected to the input end of the DCDC module through the DC charger, and the DCDC module charges the 24V lead-acid battery through the output end.

[0024] Among them, when the high-voltage input interface of the DC charger has high voltage, the external device is charged from the internal high-voltage circuit of the charger through the first charging gun or the second charging gun.

[0025] Wherein, the charger control board further includes: a first CAN communication interface and a second CAN communication interface;

[0026] The charger control board is also used to realize the communication, control, status detection and fault diagnosis functions between the DC charger and the battery.

[0027] Among them, the charger control board also includes: a first HVIL interface and a second HVIL interface, which are used to respectively detect the connection status of the first battery replacement battery system and the second battery replacement battery system.

[0028] It can be seen that the large-capacity mobile fast-charging device with a dual-branch switchable power supply provided by the utility model, as an independent power supply circuit, does not require an external power supply and can be moved as a whole; the power supply side of the DC charger adopts a replaceable low-voltage power supply (replaceable battery) to speed up the full charging time of the equipment; the power supply battery is selected by switching the first battery replacement battery system and the second battery replacement battery system to improve the charging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of the structure of a large-capacity mobile fast-charging device with dual-branch switchable power supplies provided by an embodiment of the utility model;

[0031] Figure 2 A schematic diagram of the structure of a specific example of a large-capacity mobile fast-charging device with a dual-branch switchable power supply provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0032] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0033] Figure 1 The schematic diagram of the structure of the large-capacity mobile fast charging device with dual-branch switchable power supply provided by the embodiment of the utility model is shown in FIG. Figure 1The large-capacity mobile fast charging device with dual-branch switchable power supplies provided by the embodiment of the utility model comprises:

[0034] A first switch, a low-voltage power supply, a DC charger, a first battery replacement system, a second battery replacement system, a high-voltage distribution box and a DCDC module; wherein:

[0035] The low-voltage power supply is electrically connected to the DCDC module and the DC charger respectively, and is used to provide low-voltage normal power;

[0036] The first switch is electrically connected to the low-voltage power supply and is used to control the opening and closing of the low-voltage power supply. When the first switch is closed, the low-voltage power supply provides low-voltage normal power to the DC charger and the first battery-swap battery system and the second battery-swap battery system. When the first switch is disconnected, the system is powered off;

[0037] The DCDC module is electrically connected to the DC charger;

[0038] The DC charger is electrically connected to the high-voltage distribution box, the first battery exchange battery system and the second battery exchange battery system respectively, and is used to provide a low-voltage normal power interface for the first battery exchange battery system and the second battery exchange battery system, and to control the first battery exchange battery system to charge an external device or the second battery exchange battery system to charge an external device.

[0039] Specifically, the utility model can carry two high-energy DC power supplies through a dual-branch design, and can be used with a 120kw charging pile to meet the requirements of fast charging (it can also be loaded and replaced with an existing heavy-duty truck battery replacement 282kwh product) to power the charging pile.

[0040] At the same time, the utility model provides a large-capacity mobile fast charging device with dual-branch switchable power supply, and its circuit is a complete and independent power supply system, which can realize the mobile charging function;

[0041] In addition, the modularization idea of ​​the charger's high-voltage power supply is adopted to achieve 2-way power supply switching through a switching device.

[0042] As an optional implementation of the embodiment of the utility model, the low-voltage power supply is a 24V lithium battery, so that the battery of the low-voltage power supply can be replaced, and the time to fully charge the device can be accelerated.

[0043] As an optional implementation of the embodiment of the utility model, the DCDC module is a 24V to 12V DCDC module.

[0044] See also Figure 2As an optional implementation of an embodiment of the utility model, the high-voltage distribution box includes: a high-voltage output interface, a first battery high-voltage interface, a second battery high-voltage interface, a fourth switch, a fifth switch, a sixth switch and a seventh switch; wherein: the first battery high-voltage interface is connected to the high-voltage output interface and the sixth switch and the seventh switch respectively through the fourth switch and the fifth switch; the second battery high-voltage interface is connected to the high-voltage output interface and the fourth switch and the fifth switch respectively through the sixth switch and the seventh switch.

[0045] See also Figure 2 As an optional implementation of an embodiment of the utility model, the first battery replacement battery system includes: a first battery low-voltage interface, a first battery high-voltage output and a first battery charging socket; the first battery low-voltage interface is electrically connected to the DC charger; the first battery high-voltage output is electrically connected to the first battery high-voltage interface of the high-voltage distribution box; the second battery low-voltage interface is electrically connected to the DC charger; the second battery high-voltage output is electrically connected to the second battery high-voltage interface of the high-voltage distribution box.

[0046] See also Figure 2 As an optional implementation of an embodiment of the utility model, a DC charger includes: a charger control board, a charger high-voltage input interface and a charger internal high-voltage circuit; the DC charger supplies power to the charger control board via a DCDC module; the charger control board selects the first battery exchange battery system for power supply by controlling the second switch to close, selects the second battery exchange battery system for power supply by controlling the third switch to close, controls the opening and closing of the fourth switch, the fifth switch, the sixth switch and the seventh switch in the high-voltage distribution box, and connects the first battery high-voltage output of the first battery exchange battery system to the high-voltage input interface of the DC charger; or connects the second battery high-voltage output of the second battery exchange battery system to the high-voltage input interface of the DC charger.

[0047] See also Figure 2 As an optional implementation of the embodiment of the utility model, when the high-voltage input interface of the DC charger has high voltage, the high voltage is connected to the input end of the DCDC module through the DC charger, and the DCDC module charges the 24V lead-acid battery through the output end. When the high-voltage input interface of the DC charger has high voltage, the external device is charged from the high-voltage circuit inside the charger through the first charging gun or the second charging gun.

[0048] See also Figure 2 As an optional implementation of the embodiment of the utility model, the charger control board also includes: a first CAN communication interface and a second CAN communication interface; the charger control board is also used to realize the communication, control, status detection and fault diagnosis functions between the DC charger and the battery.

[0049] See also Figure 2As an optional implementation of the embodiment of the utility model, the charger control board also includes: a first HVIL interface and a second HVIL interface, which are used to respectively detect the connection status of the first battery replacement battery system and the second battery replacement battery system.

[0050] In specific implementation, Figure 2 A specific example is given in Figure 2 The large-capacity mobile fast charging device with dual-branch switchable power supply provided by the embodiment of the utility model can include six main parts: 1 24V lithium battery power supply (system low-voltage power supply), 1 DC charger, 2 battery replacement systems, 1 high-voltage distribution box, and 1 DCDC module.

[0051] The utility model can provide 24V normal power from a 24V lithium battery power supply, and the switch K1 controls the opening and closing of the 24V normal power. When K1 is closed, the 24V lithium battery power supply provides low voltage for the DC charger and the two battery replacement systems; when K1 is disconnected, the system is powered off. The DC charger internally supplies power to the charger control board via a 24V to 12V DCDC module. The charger control board can select the battery to be powered as 1# battery replacement battery / 2# battery replacement battery by controlling the opening and closing of the K2 / K3 switches (at most only one switch can be closed), and can also control the opening and closing of K4&K5 / K6&K7 in the high-voltage box, thereby connecting the high-voltage output of the 1# battery replacement battery system or the 2# battery replacement battery system to the high-voltage input of the charger. CAN2-L and CAN2-H are CAN communication lines, which are used to realize the communication, control, status detection, and fault diagnosis functions between the DC charger and the battery. The control board in the charger is used to detect the connection status of the 1# battery swap system and the 2# battery swap system through HVIL1 / HVIL2. When the battery swap system has high voltage output, the high voltage will be connected to the input end of the DCDC module through the charger. At this time, the DCDC module charges the 24V lead-acid battery through the output end. When there is high voltage at the high-voltage input end of the charger, the charger can charge the electric vehicle through charging gun A / charging gun B in accordance with GB / T27930-2015 standard.

[0052] It can be seen that the large-capacity mobile fast-charging device with a dual-branch switchable power supply provided by the utility model, as an independent power supply circuit, does not require an external power supply and can be moved as a whole; the power supply side of the DC charger adopts a replaceable low-voltage power supply (replaceable battery) to speed up the full charging time of the equipment; the power supply battery is selected by switching the first battery replacement battery system and the second battery replacement battery system to improve the charging efficiency.

[0053] Therefore, through the large-capacity mobile fast-charging device with dual-branch switchable power supplies provided by the utility model, mobile charging can be realized, free from geographical and power grid restrictions, and electric vehicles can be recharged anytime and anywhere; at the same time, it has large-capacity and fast-charging functions and supports a maximum output power of 240kw; the power supply of the device itself can support the battery replacement function, and has a certain peak-shaving function when linked with the battery replacement station.

[0054] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A large-capacity mobile fast-charging device with dual-branch switchable power supplies, characterized in that: include: A first switch, a low-voltage power supply, a DC charger, a first battery replacement system, a second battery replacement system, a high-voltage distribution box and a DCDC module; wherein: The low voltage power supply is electrically connected to the DCDC module and the DC charger respectively; Used to provide low voltage normal electricity; The first switch is electrically connected to the low-voltage power supply and is used to control the opening and closing of the low-voltage power supply. When the first switch is closed, the low-voltage power supply provides low-voltage normal power to the DC charger and the first battery replacement battery system and the second battery replacement battery system. When the first switch is disconnected, the system is powered off. The DCDC module is electrically connected to the DC charger; The DC charger is electrically connected to the high-voltage distribution box, the first battery exchange battery system and the second battery exchange battery system, respectively, and is used to provide a low-voltage normal power interface for the first battery exchange battery system and the second battery exchange battery system, and to control the first battery exchange battery system to charge an external device or the second battery exchange battery system to charge an external device.

2. The large-capacity mobile fast charging device with dual-branch switchable power supply according to claim 1 is characterized in that: The low voltage power supply is a 24V lithium battery.

3. The large-capacity mobile fast charging device with dual-branch switchable power supply according to claim 2 is characterized in that: The high voltage distribution box includes: a high voltage output interface, a first battery high voltage interface, a second battery high voltage interface, a fourth switch, a fifth switch, a sixth switch and a seventh switch; wherein: The first battery high voltage interface is connected to the high voltage output interface and the sixth switch and the seventh switch respectively through the fourth switch and the fifth switch; The second battery high voltage interface is connected to the high voltage output interface and the fourth switch and the fifth switch through a sixth switch and a seventh switch, respectively.

4. The large-capacity mobile fast charging device with dual-branch switchable power supply according to claim 3 is characterized in that: The first battery replacement system includes: a first battery low voltage interface, a first battery high voltage output and a first battery charging socket; The second battery replacement system includes: a second battery low voltage interface, a second battery high voltage output, and a second battery charging socket; The first battery low voltage interface is electrically connected to the DC charger; The first battery high voltage output is electrically connected to the first battery high voltage interface of the high voltage distribution box; The second battery low voltage interface is electrically connected to the DC charger; The second battery high voltage output is electrically connected to the second battery high voltage interface of the high voltage distribution box.

5. The large-capacity mobile fast charging device with dual-branch switchable power supply according to claim 4 is characterized in that: The DCDC module is a 24V to 12V DCDC module.

6. The large-capacity mobile fast-charging device with dual-branch switchable power supply according to claim 5, characterized in that: The DC charger comprises: a charger control board, a charger high voltage input interface and a charger internal high voltage circuit; The DC charger supplies power to the charger control board via the DCDC module; The charger control board selects the first battery exchange battery system for power supply by controlling the second switch to close, selects the second battery exchange battery system for power supply by controlling the third switch to close, controls the opening and closing of the fourth switch, the fifth switch, the sixth switch and the seventh switch in the high-voltage distribution box, and connects the first battery high-voltage output of the first battery exchange battery system to the high-voltage input interface of the DC charger; or connects the second battery high-voltage output of the second battery exchange battery system to the high-voltage input interface of the DC charger.

7. The large-capacity mobile fast charging device with dual-branch switchable power supply according to claim 6, characterized in that: When there is high voltage at the high voltage input interface of the DC charger, the high voltage is connected to the input end of the DCDC module through the DC charger, and the DCDC module charges the 24V lead-acid battery through the output end.

8. The large-capacity mobile fast-charging device with dual-branch switchable power supplies according to claim 7, characterized in that: When the high-voltage input interface of the DC charger has high voltage, the external device is charged from the internal high-voltage circuit of the charger through the first charging gun or the second charging gun.

9. The large-capacity mobile fast charging device with dual-branch switchable power supply according to claim 8, characterized in that: The charger control board also includes: a first CAN communication interface and a second CAN communication interface; The charger control board is also used to realize the communication, control, status detection and fault diagnosis functions between the DC charger and the battery.

10. The large-capacity mobile fast-charging device with dual-branch switchable power supply according to claim 9, characterized in that: The charger control board also includes: a first HVIL interface and a second HVIL interface, which are used to respectively detect the connection status of the first battery replacement battery system and the second battery replacement battery system.

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