WO2018192192A1

WO2018192192A1 - Distributed mobile battery charging/swapping vehicle system and energy storing-type charging pile assembly

Info

Publication number: WO2018192192A1
Application number: PCT/CN2017/104976
Authority: WO
Inventors: 何旭; 强金星; 沈斐
Original assignee: 上海蔚来汽车有限公司
Priority date: 2017-04-19
Filing date: 2017-09-30
Publication date: 2018-10-25
Also published as: CN106985696A; CN106985696B

Abstract

A distributed mobile battery charging/swapping vehicle system and an energy storing-type charging pile assembly, comprising a mobile battery charging/swapping vehicle (4) used for charging or swapping batteries for an electric vehicle (2), an energy storing-type charging pile assembly providing battery charging and swapping services, and a control and scheduling platform (5). The energy storing-type charging pile assembly comprises a charging pile (1) and a distributed charging cabinet (3). The charging pile (1) can charge the electric vehicle (2) and can charge the distributed charging cabinet (3) when idle. The distributed charging cabinet (3) can be moved to the mobile battery charging/swapping vehicle (4) when completely charged. The control and scheduling platform (5) monitors the position and state of the charging pile (1), of the distributed charging cabinet (3), of the mobile battery charging/swapping vehicle (4), and of the electric vehicle (2), and allows, by calculation, the service efficiency of the mobile battery charging/swapping vehicle (4) to be maximized and an energy replenishing route to be most economical, thus solving the difficulty in charging the electric vehicle (2) and the problem of a large number of the charging piles (1) idling.

Description

Distributed mobile charging/replacement system and energy storage charging pile assembly

Technical field

The invention relates to the technical field of electric vehicle charging, and in particular to a distributed mobile charging/changing electric vehicle system and an energy storage charging pile assembly.

Background technique

In recent years, with the reduction of petroleum resources and serious pollution of the atmospheric environment, the development of electric vehicles has become an inevitable trend in the development of the automobile industry. Vigorously developing electric vehicles is an important choice to ensure China's energy security and achieve sustainable development of the automotive industry.

With the increasing number of electric vehicles, the difficulty of charging has become a very prominent problem. At the same time, the government and operators have built a large number of slow-filled piles in this round of new energy promotion. However, most of these slow-filled piles are idle because of unusable parking spaces, occupied parking spaces, and poor user experience. The construction of fast-filled piles is difficult to achieve widespread coverage due to cost and capacity problems.

Accordingly, there is a need in the art for a new electric vehicle charging system to address the above problems.

Summary of the invention

In order to solve the above problems in the prior art, that is, in order to solve the problem that the existing electric vehicle is difficult to charge and the AC slow charging pile is largely idle, the present invention provides a distributed mobile charging/replacement system, and the distributed mobile charging/ The changeover system includes a mobile charge/replacement vehicle for charging or replacing an electric vehicle, the distributed mobile charge/change train system further including an energy storage charging post for replacing the battery for the mobile charge/change train The energy storage charging post assembly includes a charging post and a distributed charging box configured to be capable of charging an electric vehicle and capable of charging the distributed charging box when idle, the distributed The charging box can be replaced with the mobile charging/changing vehicle after charging is completed.

In a preferred technical solution of the distributed mobile charging/replacement system, the distributed mobile charging/changing system further includes a control scheduling platform, the control scheduling platform and the charging pile, the distributed charging box, The mobile charging/replacement vehicle and the electric vehicle communicate, and configured to perform at least one of: monitoring the usage of the charging post, In order to control the charging pile to charge the distributed charging box when the charging pile is idle; monitor the status and power of the battery in the distributed charging box to allocate resources for the mobile charging/changing vehicle that needs to replace the battery. Monitor the driving status and remaining battery capacity of electric vehicles, predict when and where electric vehicles need to be charged/replaced, guide electric vehicles to the nearest idle charging pile, or deploy nearby mobile charging/changing vehicles to charge or change electric vehicles. Monitoring the position and state of the mobile charging/replacement vehicle, and maximizing the service efficiency of the mobile charging/changing vehicle in combination with the position and remaining power of the electric vehicle that needs to be charged/replaced; when the mobile charging / When the battery needs to be replaced, the most economical replenishment route of the mobile charging/changing vehicle is calculated according to the position and the state of charge of the distributed charging box.

In a preferred technical solution of the distributed mobile charging/replacement system, the distributed charging box includes a battery box, a battery pack disposed in the battery box, a power switch, a current converter, and a control monitoring system; The power switch is configured to open and connect the charging post and the distributed charging box; one end of the current transformer is connected to the power switch, and the other end is connected to the battery pack for charging the battery The current of the pile is converted to a current suitable for charging the battery pack; the control monitoring system is configured to monitor the operational status of various components within the distributed charging box and to interact with the outside world.

In a preferred technical solution of the distributed mobile charging/replacement system, the battery pack is provided with a plug-in structure, and the battery pack is inserted into the battery box through the plug-in structure. Pick up.

In a preferred technical solution of the distributed mobile charging/replacement system, the battery box is further provided with a heat dissipation unit, a battery management system and a connection terminal for dissipating heat for the battery pack.

In a preferred technical solution of the above distributed mobile charging/replacement system, the battery pack includes two batteries, which are connected in series with each other by being plugged into a connector in the battery box, and each The batteries are all provided with a battery management system, and the two battery management systems adopt a master-slave structure.

In a preferred technical solution of the above-described distributed mobile charging/replacement system, the mobile charging/replacement vehicle is a mobile charging vehicle and includes a plurality of external charging systems, and the plurality of external charging systems are in the mobile charging vehicle Parallel; each of the external charging systems includes a plurality of discharge systems in parallel; each of the discharge systems includes a pluggable battery pack and a DC/DC converter coupled to the battery pack.

In a preferred technical solution of the above distributed mobile charging/replacement system, the power of the battery pack is 6.6 kW, the power of the DC/DC converter is 4.5 kW, and each of the external charging systems includes 10 parallel connections. The discharge system has a total power of 45 kW, and the mobile charging vehicle includes two of the external charging systems, and the maximum total power of the mobile charging vehicle is 90 kW.

In a preferred technical solution of the distributed mobile charging/replacement system, the external charging system adopts a forced air cooling structure.

In a preferred technical solution of the above distributed mobile charging/replacement system, the charging post is an AC slow charging pile; and the current transformer is an AC/DC converter, and the AC/DC converter is used to The alternating current of the alternating slow charging pile is converted into a direct current that charges the battery pack.

According to another aspect of the present invention, an energy storage charging pile assembly is provided, characterized in that the energy storage charging pile assembly comprises a distributed charging box and a charging pile, the charging pile being configured to be electric The car is charged and can charge the distributed charging box when idle, the distributed charging box can be replaced with a mobile charging/changing vehicle after charging is completed or the battery can be directly replaced for the electric vehicle.

In a preferred technical solution of the above-described energy storage charging post assembly, the distributed charging box includes a battery box and a battery pack disposed in the battery box, a power switch, a current converter, and a control monitoring system; a power switch for disconnecting and connecting the charging post and the distributed charging box; one end of the current transformer is connected to the power switch, and the other end is connected to the battery pack for charging the battery The current is converted to a current suitable for charging the battery pack; the control monitoring system is configured to monitor the operational status of various components within the distributed charging box and to interact with the outside world.

In a preferred technical solution of the above-mentioned energy storage charging pile assembly, the battery pack is provided with a plug-in structure, and the battery pack is inserted into the connector in the battery box through the plug-in structure. .

In a preferred embodiment of the above-described energy storage charging post assembly, a heat dissipating unit, a battery management system, and a wiring terminal for dissipating heat for the battery pack are further disposed in the battery case.

In a preferred embodiment of the above-described energy storage charging post assembly, the battery pack includes two batteries, and the two batteries are connected in series to each other by being inserted into a connector in the battery case, and each of the batteries The batteries are all equipped with a battery management system, and the two battery management systems adopt a master-slave structure.

In a preferred embodiment of the above-described energy storage charging pile assembly, the charging pile is an AC slow charging pile; and the current transformer is an AC/DC converter, and the AC/DC converter is used to exchange the alternating current The alternating current of the slow-filled pile is converted into a direct current that charges the battery pack.

Those skilled in the art can understand that, in the technical solution of the present invention, the energy storage charging pile assembly includes a charging pile and a distributed charging box, and the charging pile is configured to be capable of charging the electric vehicle and can be distributed when idle. Charging the charging box, the distributed charging box can be replaced after the charging is completed to the mobile charging/changing vehicle or directly replacing the battery for the electric vehicle; controlling the dispatching platform and the charging pile, the distributed charging box, the mobile charging/changing electric vehicle and the electric vehicle Communication to monitor their status, combined with the position and remaining capacity of the electric vehicle that needs to be charged/replaced, maximizes the service efficiency of the mobile charging/changing vehicle, and calculates the movement based on the position and state of charge of the distributed charging box. The most economical replenishment route for charging/changing the electric train solves the problem that the existing electric vehicle is difficult to charge, and the AC slow-filled pile is largely idle.

DRAWINGS

1 is a structural block diagram of an energy storage charging pile assembly and a distributed charging box.

2 is a topological view of a charging system of a mobile charging vehicle.

Figure 3 is a block diagram of the communication system of the distributed mobile charging/changing system.

detailed description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the scope of the present invention. Those skilled in the art can adjust it as needed to suit a particular application. For example, although the present application has been described in connection with a slow charging pile and a mobile charging vehicle, the technical solution of the present invention can obviously be implemented by using other charging devices or mobile changing vehicles equivalent to slow charging piles, and the variation does not deviate. The basic principles of the invention are therefore also intended to fall within the scope of the invention. In addition, the term “distributed” as used in the present application means that the position of the battery case of the present invention is not fixed and varies dynamically with specific application scenarios. The term is merely for highlighting the technical effects of the present invention and should not be addressed. The technical solution of the present invention constitutes any limitation. Without changing the basic principles of the present invention, mobile charging/replacement systems and charging pile assemblies, which are otherwise named, will fall within the scope of the present invention.

In addition, it should be noted that in the description of the present invention, the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed connections, for example, or It is a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

As shown in FIG. 1 , the figure is a schematic diagram of an energy storage charging pile assembly and a distributed charging box. The energy storage charging pile assembly comprises a slow charging pile 1 and a distributed charging box 3 , and the distributed charging box 3 is used. Replace the battery for the mobile charging car 4 (shown in Figure 2). The slow charging pile 1 can charge the electric vehicle 2 and can charge the battery in the distributed charging box 3 when idle. After the charging of the distributed charging box 3 is completed, the battery can be replaced with the mobile charging vehicle 4 that needs to be replenished or the battery can be directly replaced for the electric vehicle that needs to be replaced.

With continued reference to FIG. 1, the distributed charging box 3 includes a power switching switch 31. One end of the power switching switch 31 is connected to the slow charging pile 1 and the other end is connected to the current transformer 32 for disconnecting and connecting the slow charging pile 1 and distribution. Charging box 3. The other end of the current transformer 32 is connected to a battery pack 33 provided in the battery case for converting the current of the slow charging pile 1 into a current that can be used for charging the battery pack. A control monitoring system 34 is also installed in the distributed charging box 3 for monitoring the working state of each component in the distributed charging box 3 and interacting with the outside world. The battery pack 33 in the battery case is provided with a plug-in structure (not shown in FIG. 1), and the battery pack 33 is inserted into the connector in the battery case through the plug-in structure. A heat dissipation unit for dissipating heat from the battery pack 33, a battery management system, and a connection terminal (not shown in FIG. 1) are also disposed in the battery case. Preferably, the battery pack 33 includes two batteries, the two batteries are connected in series with each other by being plugged into the connector in the battery box, and each battery has its own battery management system (BMS), and the two battery management systems adopt The master-slave structure, that is, the BMS of one battery is responsible for the collection of internal battery temperature, current, voltage, and the control command of another battery BMS. The BMS, which is another battery of the main battery, is responsible for the collection of internal temperature, current, and voltage of the battery, and realizes external interaction of battery information or control, and its own equalization control algorithm. Preferably, the slow charging pile 1 is an alternating current slow charging pile, and the current transformer 32 is an AC/DC converter for converting the alternating current of the alternating current slow charging pile 1 into charging the battery unit 33 in the battery box. DC power. The charging power of the AC slow-charge pile 1 is 3.3 kW, and the battery capacity of the battery pack 33 is 3.3*2 kWh.

Referring to FIG. 2, as shown in FIG. 2, the mobile charging cart 4 is based on a pluggable battery pack 4111 (ie, the battery pack 33 in the battery case of FIG. 1), and adopts a plug-in type structure. In preference In the embodiment, the mobile charging vehicle 4 includes two external charging systems 41, and two external charging systems 41 are connected in parallel in the mobile charging vehicle 4, and the external charging system 41 adopts a forced air cooling structure. Each external charging system 41 includes ten parallel discharge systems 411. Each discharge system 411 includes a pluggable battery pack 4111 and a DC/DC converter 4112 coupled to the battery pack 4111. The power of the battery pack is 6.6 kW, the power of the DC/DC converter is 4.5 kW, and each external charging system 41 includes 10 parallel discharge systems 411 with a total power of 45 kW. Each mobile charging vehicle includes two external charging systems. 41, the total power is 90kW. Those skilled in the art can understand that although the power of the battery pack, the DC/DC converter, the external charging system, the discharging system, and the charging vehicle, and the number of components are given in the technical solution of the present invention, It is obvious that the inventive components can be combined with other powers and quantities as long as the combined system can be used to charge the electric vehicle 2.

Referring to FIG. 3, as shown in FIG. 3, the distributed charging/replacement system of the present invention further includes a control dispatching platform 5, which is connected with an AC slow charging pile 1, a distributed charging box 3, an electric vehicle 2, and The mobile charging car 4 communicates and monitors the status of these components. The control dispatching platform 5 monitors the use of the AC slow-filled pile 1, and controls the AC slow-filled pile 1 to charge the distributed charging box 3 when the AC slow-filled pile 1 is idle. At the same time, the control dispatching platform 5 monitors the status and power of the battery in the distributed charging box 3 to allocate resources for the mobile charging car 4 that needs to be replaced. Specifically, the control dispatching platform 5 can search for the distributed charging box 3 available nearby according to the current position of the mobile charging cart 4, and selectively plan the optimal route to the nearest distributed charging box 3 for the mobile charging cart 4. The electric vehicle 2 communicates with the control dispatching platform 5 and transmits the driving state and the remaining battery power to the control dispatching platform 5, so that the control dispatching platform 5 can predict the time and place of the electric vehicle 2 to be charged/renewed, and guide the electric vehicle 2 to The nearest idle AC slow charging pile 1 is charged, or the nearby mobile charging vehicle 4 is charged to charge the electric vehicle 4. The control dispatching platform 5 also monitors the position and state of the mobile charging vehicle 4, and combines the position and remaining power of the electric vehicle 2 to be charged to maximize the service efficiency of the mobile charging vehicle 4 - that is, the most in the shortest moving distance Electric car charging. When the mobile charging car 4 needs to replace the battery, the most economical replenishing route of the mobile charging car 4 is calculated according to the position and the state of charge of the distributed charging box 3 detected by the control dispatching platform 5. Those skilled in the art can understand that although the above-mentioned "optimal route" and "most economic route" generally refer to a route with a short moving distance and low cost, this is not static, and a person skilled in the art can also be in a specific situation. Set the optimal or most economical route to different standards as needed, such as the smoothest roads, the least traffic lights, and so on.

In another aspect, the present invention further provides an energy storage charging pile assembly as shown in FIG. 1 , the energy storage charging pile assembly comprising a slow charging pile 1 and a distributed charging box 3 , and a slow charging pile 1 configuration The electric vehicle 2 can be charged and the distributed charging box 3 can be charged when idle. The distributed charging box 3 can be replaced by the mobile charging cart 4 shown in FIG. 2 or directly replaced by the electric vehicle 2 after the charging is completed. battery. As described above, the distributed charging box 3 includes a battery case (not shown in FIG. 1) and a battery pack 33, a power source changeover switch 31, a current converter 32, and a control monitoring system 34 disposed in the battery case. The power switch 31 is used for disconnecting and connecting the slow charging pile 1 and the distributed charging box 3; one end of the current transformer 32 is connected to the power switching switch 31, and the other end is connected to the battery pack 33 for converting the current of the slow charging pile 1 A current suitable for charging the battery pack 33; the control monitoring system 34 is used to monitor the operational status of the various components within the distributed charging box 3 and to interact with the outside world. Preferably, the battery pack 3 is provided with a plug-in structure, and the battery pack 33 is inserted into the connector in the battery box through the plug-in structure. More preferably, a heat dissipation unit, a battery management system, and a connection terminal for dissipating heat for the battery pack 33 are also disposed in the battery case. More preferably, the battery pack 33 includes two batteries that are connected in series with each other by being plugged into a connector in the battery case 33, and each battery is provided with a battery management system, two battery management systems. Adopt master-slave structure. More preferably, the slow charging pile 1 is an alternating current slow charging pile, and the current transformer 32 is an AC/DC converter 32 for converting the alternating current of the alternating current slow charging pile 1 into charging the battery unit 33. DC power.

Heretofore, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings, but it is obvious to those skilled in the art that the scope of the present invention is obviously not limited to the specific embodiments. Those skilled in the art can make equivalent changes or substitutions to the related technical features without departing from the principles of the present invention, and the technical solutions after the modifications or replacements fall within the scope of the present invention.

Claims

A distributed mobile charging/changing electric vehicle system, comprising a mobile charging/changing electric vehicle for charging or changing electric vehicles,

The distributed mobile charging/replacement system further includes an energy storage charging pile assembly for replacing the battery for the mobile charging/replacement vehicle, the energy storage charging pile assembly comprising a charging pile and a distributed charging box configured to be capable of charging an electric vehicle and capable of charging the distributed charging box when idle, the distributed charging box being replaceable to the mobile charging/replacement after charging is completed On the tram.
The distributed mobile charging/replacement system according to claim 1, wherein the distributed mobile charging/removing system further comprises a control scheduling platform, the control scheduling platform and the charging pile, the distribution a charging box, the mobile charging/changing vehicle, and an electric vehicle communication, and configured to perform at least one of the following operations:

Monitoring the usage of the charging post to control the charging post to charge the distributed charging box when the charging pile is idle;

Monitoring the status and power of the battery in the distributed charging box to allocate resources for the mobile charging/replacement vehicle that needs to be replaced;

Monitor the driving status and remaining battery capacity of electric vehicles, predict when and where electric vehicles need to be charged/replaced, guide electric vehicles to the nearest idle charging pile, or deploy nearby mobile charging/replacement vehicles to charge or change electric vehicles. ;

Monitoring the position and state of the mobile charging/replacement vehicle, and maximizing the service efficiency of the mobile charging/changing vehicle in combination with the position and remaining power of the electric vehicle that needs to be charged/replaced; when the mobile charging/replacement When the electric car needs to be replaced, the most economical replenishing route of the mobile charging/returning electric vehicle is calculated according to the position and the state of charge of the distributed charging box.
The distributed mobile charging/replacement system of claim 2, wherein the distributed charging box comprises a battery box and a battery pack, a power switch, a current converter and a control disposed in the battery box surveillance system;

The power switch is configured to open and connect the charging post and the distributed charging box;

One end of the current transformer is connected to the power switch, and the other end is connected to the battery pack for converting current of the charging post into a current suitable for charging the battery pack;

The control monitoring system is configured to monitor an operating state of each component in the distributed charging box and interact with the outside world.
The distributed mobile charging/removing trolley system according to claim 3, wherein the battery pack is provided with a plug-in structure, and the battery pack passes through the plug-in structure and the battery box The connectors are plugged in.
The distributed mobile charging/changing trolley system according to claim 4, wherein a heat dissipating unit, a battery management system and a wiring terminal for dissipating heat for the battery pack are further disposed in the battery case.
The distributed mobile charging/removing trolley system according to claim 5, wherein said battery pack comprises two batteries, said two batteries being connected in series with each other by being plugged into a connector in said battery case And each of the batteries is provided with a battery management system, and the two battery management systems adopt a master-slave structure.
The distributed mobile charging/replacement system of claim 6 wherein said mobile charging/replacement vehicle is a mobile charging vehicle and includes a plurality of external charging systems, said plurality of external charging systems being in said movement Charging cars are connected in parallel with each other;

Each of the external charging systems includes a plurality of discharging systems connected in parallel;

Each of the discharge systems includes a pluggable battery pack and a DC/DC converter coupled to the battery pack.
The distributed mobile charging/removing trolley system according to claim 7, wherein said battery pack has a power of 6.6 kW, said DC/DC converter has a power of 4.5 kW, and said each external charging system Including 10 parallel discharge systems with a total power of 45 kW, the mobile charging vehicle includes two of the external charging systems, and the maximum total power of the mobile charging vehicle is 90 kW.
The distributed mobile charging/replacement system of claim 8 wherein said external charging system employs a forced air cooling structure.
A distributed mobile charging/replacement system according to any one of claims 3 to 9, The charging pile is an alternating current slow charging pile; and the current transformer is an AC/DC converter, and the AC/DC converter is configured to convert the alternating current of the alternating current slow charging pile to the battery Group charged DC power.
An energy storage charging pile assembly, characterized in that the energy storage charging pile assembly comprises a distributed charging box and a charging pile, the charging pile being configured to be capable of charging an electric vehicle and capable of being in an idle state The distributed charging box is charged, and the distributed charging box can be replaced with a mobile charging/changing vehicle after the charging is completed or directly replace the battery for the electric vehicle.
The energy storage charging pile assembly according to claim 11, wherein the distributed charging box comprises a battery box, a battery pack disposed in the battery box, a power switch, a current converter, and a control monitor. system;

The power switch is configured to open and connect the charging post and the distributed charging box;

One end of the current transformer is connected to the power switch, and the other end is connected to the battery pack for converting current of the charging post into a current suitable for charging the battery pack;

The control monitoring system is configured to monitor an operating state of each component in the distributed charging box and interact with the outside world.
The energy storage charging pile assembly according to claim 12, wherein the battery pack is provided with a plug-in structure, and the battery pack passes through the plug-in structure and the insertion in the battery box. The connector is plugged in.
The energy storage charging pile assembly according to claim 13, wherein a heat dissipating unit, a battery management system and a connection terminal for dissipating heat for the battery pack are further disposed in the battery case.
The energy storage charging pile assembly according to claim 14, wherein the battery pack comprises two batteries, and the two batteries are connected in series with each other by being plugged into a connector in the battery box. And each of the batteries is provided with a battery management system, and the two battery management systems adopt a master-slave structure.
The energy storage charging pile assembly according to any one of claims 11 to 15, The charging pile is an alternating current slow charging pile; and the current transformer is an AC/DC converter, and the AC/DC converter is configured to convert the alternating current of the alternating current slow charging pile to the battery pack Charged DC power.