Power distribution system of mobile energy storage vehicle

Abstract

The utility model discloses a mobile energy storage vehicle power distribution system, and relates to the technical field of power supply and distribution. The mobile energy storage vehicle power distribution system comprises a power distribution unit and two current conversion units. The power supply distribution unit and the two current conversion units are arranged on the mobile energy storage vehicle, the power supply distribution unit is electrically connected with the two current conversion units and a power battery used for storing energy and supplying power, one of the two current conversion units is a DC-DC conversion unit, the other one of the two current conversion units is an AC-DC conversion unit, and the two current conversion units are electrically connected with the power battery. And at least one of the two current conversion units is a bidirectional conversion unit. The mobile energy storage vehicle power distribution system disclosed by the utility model not only can charge a new energy vehicle, but also can supply power to external electric appliances, so that the mobile energy storage vehicle power distribution system can be suitable for different application scenes.

Description

Technical Field

[0001] The utility model belongs to the technical field of power supply and distribution, and specifically relates to a power distribution system for a mobile energy storage vehicle. Background Art

[0002] As the number of new energy vehicles continues to rise, the ratio of charging piles to new energy vehicles continues to decrease, which is far from meeting the charging needs of new energy vehicles. In addition, with the surge in electricity consumption, the pressure on the power grid has doubled. When the line is inspected or urgently repaired, it will inevitably affect work and life. At this time, mobile energy storage vehicles can be used as a backup power source to power new energy vehicles or external electrical appliances.

[0003] Due to the large differences in electricity consumption and voltage between new energy vehicles and industrial and commercial vehicles, the mature mobile energy storage vehicles currently on the market can usually only retain one of the functions, that is, they can only recharge new energy vehicles alone or only recharge external electrical appliances alone, resulting in very limited application scenarios of mobile energy storage vehicles.

[0004] Therefore, how to provide an effective solution to suit different power supply scenarios has become a difficult problem to be solved in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a mobile energy storage vehicle power distribution system to solve the above-mentioned problems existing in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A mobile energy storage vehicle power distribution system comprises: a power distribution unit and two current conversion units;

[0008] The power distribution unit and the two current conversion units are both arranged on the mobile energy storage vehicle. The power distribution unit is electrically connected to the two current conversion units and the power battery for energy storage and power supply, respectively. One of the two current conversion units is a DC-DC conversion unit, the other of the two current conversion units is an AC-DC conversion unit, and at least one of the two current conversion units is a bidirectional conversion unit.

[0009] Based on the above disclosed content, the mobile energy storage vehicle power distribution system provided by the utility model is provided with a power distribution unit and two current conversion units. The power distribution unit is electrically connected to the two current conversion units and the power battery for energy storage and power supply, one of the two current conversion units is a DC-DC conversion unit, the other of the two current conversion units is an AC-DC conversion unit, and at least one of the two current conversion units is a bidirectional conversion unit. In this way, by providing at least one bidirectional conversion unit, the power battery can be charged and replenished. At the same time, one of the two current conversion units is a DC-DC conversion unit and the other is an AC-DC conversion unit. In this way, the direct current output of the power battery can be converted into a voltage range applicable to new energy vehicles to charge new energy vehicles, and the direct current output of the power battery can also be converted into alternating current to power external electrical appliances, so that it can be suitable for different application scenarios.

[0010] Through the above-mentioned design, the mobile energy storage vehicle power distribution system provided by the utility model can not only convert the direct current output by the power battery into a voltage range applicable to new energy vehicles to charge new energy vehicles, but also convert the direct current output by the power battery into alternating current to power external electrical appliances, thereby being applicable to different application scenarios and facilitating practical application and promotion.

[0011] In a possible design, the two current conversion units include a first DC-DC conversion unit and an AC-DC conversion unit, and both the first DC-DC conversion unit and the AC-DC conversion unit are bidirectional conversion units.

[0012] In a possible design, the two current conversion units include a first DC-DC conversion unit and an AC-DC conversion unit, and the first DC-DC conversion unit is a bidirectional conversion unit.

[0013] In a possible design, the two current conversion units include a first DC-DC conversion unit and an AC-DC conversion unit, and the AC-DC conversion unit is a bidirectional conversion unit.

[0014] In a possible design, the mobile energy storage vehicle power distribution system also includes:

[0015] A second DC-DC conversion unit and a storage battery, wherein the second DC-DC conversion unit is electrically connected to the power distribution unit and the storage battery respectively.

[0016] In a possible design, the second DC-DC conversion unit is a bidirectional conversion unit.

[0017] In a possible design, the output voltage of the battery is 12V.

[0018] In one possible design, the AC-DC conversion unit is an on-board charger.

[0019] Beneficial effects:

[0020] The mobile energy storage vehicle power distribution system provided by the utility model can charge and replenish energy for the power battery by setting at least one bidirectional conversion unit. At the same time, one of the two current conversion units is a DC-DC conversion unit, and the other is an AC-DC conversion unit. In this way, the direct current output by the power battery can be converted into a voltage range applicable to new energy vehicles to charge new energy vehicles, and the direct current output by the power battery can be converted into alternating current to power external electrical appliances, so that it can be suitable for different application scenarios and is convenient for practical application and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic block diagram of the power distribution system for the mobile energy storage vehicle provided by the utility model. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.

[0023] It should be understood that although the terms first, second, etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another unit. For example, a first unit can be referred to as a second unit, and similarly, a second unit can be referred to as a first unit without departing from the scope of the exemplary embodiments of the present utility model.

[0024] In order to be applicable to different power supply scenarios, an embodiment of the present application provides a mobile energy storage vehicle power distribution system, which can not only charge new energy vehicles but also supply power to external electrical appliances, and is applicable to different application scenarios.

[0025] like Figure 1 As shown, it is a block diagram of a mobile energy storage vehicle power distribution system provided in an embodiment of the present application. The mobile energy storage vehicle power distribution system includes a power distribution unit (Power Distribution Unit, PDU) and two current conversion units, and the power distribution unit and the two current conversion units are both arranged on the mobile energy storage vehicle.

[0026] Among them, the power distribution unit is electrically connected to two current conversion units and a power battery for energy storage and power supply, one of the two current conversion units is a DC-DC conversion unit, the other of the two current conversion units is an AC-DC conversion unit, and at least one of the two current conversion units is a bidirectional conversion unit.

[0027] At least one of the two current conversion units is a bidirectional conversion unit, that is, a single first DC-DC conversion unit may be a bidirectional conversion unit, a single AC-DC conversion unit may be a bidirectional conversion unit, or both the first DC-DC conversion unit and the AC-DC conversion unit may be bidirectional conversion units. To facilitate charging the power battery, in the embodiment of the present application, both the first DC-DC conversion unit and the AC-DC conversion unit are bidirectional conversion units, that is, the power battery can be charged through the first DC-DC conversion unit or through the AC-DC conversion unit, thereby facilitating charging of the power battery.

[0028] The first DC-DC conversion unit is connected to a DC charging port. When charging the power battery through the first DC-DC conversion unit, an external high-voltage DC can be connected through the DC charging port. The external high-voltage DC is converted into a DC power of a specified voltage through the first DC-DC conversion unit, and then the power battery is charged through the power distribution unit. The voltage value of the converted DC power can be determined according to the voltage of the power battery.

[0029] The AC-DC conversion unit is connected to an AC charging port. When charging the power battery through the AC-DC conversion unit, the external AC power grid can be connected through the AC charging port. The AC power of the external AC power grid is converted into DC power of a specified voltage through the AC-DC conversion unit, and then the power battery is charged through the power distribution unit. In the embodiment of the present application, the AC-DC conversion unit can adopt an on-board charger (OBC). The on-board charger refers to a charger fixedly installed on an electric vehicle, which has the ability to safely and automatically fully charge the power battery of the electric vehicle. The on-board charger can dynamically adjust the charging current or voltage parameters according to the data provided by the battery management system (BMS), perform corresponding actions, and complete the charging process.

[0030] When charging a new energy vehicle through the mobile energy storage vehicle distribution system, the DC charging port can be connected to the charging interface of the new energy vehicle. The DC power output by the power battery is distributed to the DC-DC conversion unit through the power distribution unit, and the DC-DC conversion unit converts the voltage into a voltage range suitable for the new energy vehicle, and charges the new energy vehicle.

[0031] When power is supplied to external appliances through the power distribution system of the mobile energy storage vehicle, the AC charging port can be connected to the external appliance, and the DC power output by the power battery is distributed to the AC-DC conversion unit through the power distribution unit, and is converted by the AC-DC conversion unit into AC power suitable for the external appliance, and the external appliance is powered.

[0032] See also Figure 1 In order to supply power to the power distribution system to ensure the normal startup and operation of the mobile energy storage vehicle power distribution system, a second DC-DC conversion unit and a battery can also be set. The second DC-DC conversion unit is a low-power DC-DC conversion unit, and the battery is a low-voltage battery. The second DC-DC conversion unit is electrically connected to the power distribution unit and the battery, respectively. In the embodiment of the present application, the second DC-DC conversion unit is a bidirectional conversion unit. During use, the direct current output by the power battery can be converted into low-voltage direct current through the second DC-DC conversion unit and charge the battery. The charged battery can provide a starting voltage for the mobile energy storage vehicle power distribution system, so as to start the mobile energy storage vehicle power distribution system.

[0033] In the embodiment of the present application, the output voltage of the battery is 12V. It can be understood that in some other embodiments, the output voltage of the battery may also be other voltage values.

[0034] In addition, the mobile energy storage vehicle power distribution system may also be provided with other electrical components electrically connected to the power distribution unit as needed, which may be specifically provided according to actual conditions.

[0035] In summary, the mobile energy storage vehicle power distribution system provided by the utility model is provided with a power distribution unit and two current conversion units. The power distribution unit is electrically connected to the two current conversion units and the power battery for energy storage and power supply, one of the two current conversion units is a DC-DC conversion unit, the other of the two current conversion units is an AC-DC conversion unit, and at least one of the two current conversion units is a bidirectional conversion unit. In this way, by providing at least one bidirectional conversion unit, the power battery can be charged and replenished. At the same time, one of the two current conversion units is a DC-DC conversion unit, and the other is an AC-DC conversion unit. In this way, the direct current output of the power battery can be converted into a voltage range applicable to new energy vehicles to charge new energy vehicles, and the direct current output of the power battery can also be converted into alternating current to power external electrical appliances, so that it can be suitable for different application scenarios and is convenient for practical application and promotion.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mobile energy storage vehicle power distribution system, characterized in that: include: a power distribution unit and two current conversion units; The power distribution unit and the two current conversion units are both arranged on the mobile energy storage vehicle. The power distribution unit is electrically connected to the two current conversion units and the power battery for energy storage and power supply, respectively. One of the two current conversion units is a DC-DC conversion unit, the other of the two current conversion units is an AC-DC conversion unit, and at least one of the two current conversion units is a bidirectional conversion unit.

2. The mobile energy storage vehicle power distribution system according to claim 1, characterized in that: The two current conversion units include a first DC-DC conversion unit and an AC-DC conversion unit, and both the first DC-DC conversion unit and the AC-DC conversion unit are bidirectional conversion units.

3. The mobile energy storage vehicle power distribution system according to claim 1, characterized in that: The two current conversion units include a first DC-DC conversion unit and an AC-DC conversion unit, and the first DC-DC conversion unit is a bidirectional conversion unit.

4. The mobile energy storage vehicle power distribution system according to claim 1, characterized in that: The two current conversion units include a first DC-DC conversion unit and an AC-DC conversion unit, and the AC-DC conversion unit is a bidirectional conversion unit.

5. The mobile energy storage vehicle power distribution system according to any one of claims 2 to 4, characterized in that: Also includes: A second DC-DC conversion unit and a storage battery, wherein the second DC-DC conversion unit is electrically connected to the power distribution unit and the storage battery respectively.

6. The mobile energy storage vehicle power distribution system according to claim 5, characterized in that: The second DC-DC conversion unit is a bidirectional conversion unit.

7. The mobile energy storage vehicle power distribution system according to claim 5, characterized in that: The output voltage of the battery is 12V.

8. The mobile energy storage vehicle power distribution system according to any one of claims 2 to 4, characterized in that: The AC-DC conversion unit is an on-board charger.

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