CN107394836A - A kind of charging equipment, it is electrically charged equipment and charging method - Google Patents

Abstract

The embodiments of the invention provide a kind of charging equipment, equipment and charging method are electrically charged, wherein the charging equipment includes：First charging inlet, for being electrically charged equipment charge；First optical communication unit, for when the charging equipment is in charged state, being electrically charged the battery status information of equipment transmission described in reception；Output control unit, for adjusting charged state according to the battery status information.Thus, even if in the limited or inapplicable occasion of electromagnetic shielding, interference can be also reduced, ensures the effective and reliable of communication conduction.

Description

A charging device, a charged device and a charging method

technical field

The invention relates to the technical field of charging, in particular to a charging device, a charged device and a charging method.

Background technique

During the charging process of the charging device, the charging device and the charged device need to interact with the necessary information for safe charging, such as the type of charging device (such as DC or AC), the maximum output current of the charging device, and the voltage of the charged device And status information such as temperature and so on.

However, the charging current between the charging device and the charged device will cause signal interference to the communication signal between the two, and this interference will be more obvious for large-scale charged devices such as electric vehicles. Take Tesla's super charging pile as an example. When the output voltage is 400V, the maximum output current can reach 330A. If there is no sufficient electromagnetic shielding, such a large charging current will cause serious interference to the communication signal. Although electromagnetic shielding can reduce signal interference to a certain extent, in many occasions the use of electromagnetic shielding is limited or cannot be used at all, which may cause distortion of communication signals and even abnormal charging.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is that the charging current between the charging device and the charged device will cause signal interference to the communication signal between the two.

To this end, an embodiment of the present invention provides a charging device, including: a first charging interface, used to charge the device to be charged; a first optical communication unit, used to receive the The battery status information sent by the charging device; an output control unit, configured to adjust the charging status according to the battery status information.

Optionally, the first optical communication unit is a wireless laser communication unit.

Optionally, the charging device further includes: a first non-directional wireless communication unit, configured to receive location information sent by the charged device when the charging device is not in a charging state.

Optionally, the charging device is a reverse pantograph.

The embodiment of the present invention also provides a charged device, including: a second charging interface, used to cooperate with the first charging interface of the charging device to receive electric energy; a second optical communication unit, used to In the charging state, cooperate with the first optical communication unit of the charging device to send battery status information to the charging device.

Optionally, the second optical communication unit is a wireless laser communication unit.

Optionally, the charged device further includes: a second non-directional wireless communication unit, configured to cooperate with the first non-directional wireless communication unit of the charging device when the charged device is not in a charging state, to send location information to the charging device.

The embodiment of the present invention also provides a charging method, including: judging whether the charging device is in the charging state; The battery status information; adjust the charging status according to the battery status information.

Optionally, before the step of judging whether the charging device is in the charging state, it may further include: acquiring the location of the charged device through a non-directional wireless communication unit set on the charging device; judging whether the charged device is Whether the charging device reaches the charging position; when the charged device reaches the charging position, control the charging interface of the charging device to contact with the charging interface on the charged device.

The embodiment of the present invention also provides a charging device, including: a charging interface, an optical communication unit, a memory, and a processor. The charging interface, the optical communication unit, the memory, and the processor communicate with each other through a bus. connected, the memory stores computer instructions, and the processor implements the above charging method by executing the computer instructions.

An embodiment of the present invention also provides a non-transitory computer-readable storage medium, including: the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to implement the above charging method.

The charging device, the charged device and the charging method of the embodiment of the present invention use an optical communication unit to communicate between the charging device and the charged device in the charging state with the greatest interference, because the optical communication has the characteristics of directional transmission and is not afraid of strong electromagnetic field interference. , so that even in occasions where electromagnetic shielding is limited or not applicable, it can reduce interference and ensure effective and reliable communication conduction.

Description of drawings

In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the specific implementation or description of the prior art. Obviously, the accompanying drawings in the following description The drawings show some implementations of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

FIG. 1 is a schematic diagram of a charging device and a charged device according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of another charging device and a charged device according to an embodiment of the present invention;

Fig. 3 is a flowchart of a charging method according to an embodiment of the present invention;

FIG. 4 is a flowchart of another charging method according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of a charging device according to an embodiment of the present invention.

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for description purposes only, and should not be understood as indicating or implying relative importance.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

Example 1

Fig. 1 shows a schematic diagram of a charging device 1A and a charged device 1B according to an embodiment of the present invention, wherein the charging device 1A can be, for example, a reverse pantograph for charging electric vehicles or trains, and the charged device 1B can be, for example, Electric cars or trains. Of course, the present invention is not intended to impose any limitation on the charging device and the charged device, in fact, any charging device and charged device are feasible.

As shown in Figure 1, the charging device 1A may include:

The first charging interface 11A is used for charging the charged device 1B. The charging interface can be a wired or wireless interface. When the charging interface is a wired interface, the charging interface may be a plug-in interface, that is, a charging interface commonly used in electric cars at present. In order to ensure the stability of electrical contact, this kind of plug-in interface is usually made relatively tight, and it will be difficult for users with little strength to operate. Therefore, for users with little strength, the magnetic charging interface is preferred. When the charging interface is a wireless interface, the charging interface may be an electromagnetic induction interface or a magnetic field resonance interface, wherein the latter is preferred for high-power charging;

The first optical communication unit 12A is configured to receive the battery status information sent by the charged device when the charging device 1A is in the charging state, the battery status information includes, for example, the temperature of the battery, remaining power, etc.; The charging device 1B communicates. Optical communication is a communication method that uses light waves as the transmission medium. Due to the high frequency of light waves, it has the advantage of strong resistance to electromagnetic interference. Specifically, infrared light, visible light, and ultraviolet light can all be used for optical communication. According to different transmission media, optical communication can be divided into wired optical communication (mainly including optical fiber communication) and wireless optical communication (also called atmospheric optical communication);

The output control unit 13A is configured to adjust the charging state according to the battery state information. For example, when the temperature of the battery is too high, the output control unit can reduce the charging current; when the temperature of the battery is low, the output control unit can increase the charging current appropriately; The charging current is used to balance the battery cells; in addition, when the battery is judged to be abnormal according to the battery status information, the output control unit can also interrupt the charging.

As shown in Figure 1, the charged device 1B may include:

The second charging interface 11B is used to cooperate with the first charging interface 11A of the charging device 1A to receive electric energy;

The second optical communication unit 12B is used to cooperate with the first optical communication unit 12A of the charging device 1A when the charged device 1B is in the charging state, so as to send battery status information to the charging device, the battery status The information includes, for example, the temperature of the battery, remaining power, and the like.

The charging device and the charged device in the embodiment of the present invention use an optical communication unit to communicate with the charging device in the charging state with the greatest interference, thereby reducing interference and ensuring Effective and reliable communication conduction.

Because wireless communication omits the step of establishing a physical connection, it is usually faster than wired communication, and it is of great significance in some occasions that need to quickly establish a communication connection. On the other hand, laser is highly directional, and its safety and anti-interference are stronger than non-laser. Therefore, in some optional embodiments of the present invention, the first optical communication unit may be, for example, a wireless laser communication unit, and similarly, the second optical communication unit may, for example, be a wireless laser communication unit.

Example 2

Fig. 2 shows another schematic diagram of a charging device and a charged device according to an embodiment of the present invention. Similar to Embodiment 1, the charging device 2A in this embodiment also includes a first charging interface 21A, a first optical communication unit 22A and an output control unit 24A, the charged device 2B in this embodiment also includes a second charging interface 21B and a second optical communication unit 22B. The difference from Embodiment 1 is that the charging device 2A in this embodiment also includes a first non-directional wireless communication unit 23A, and the charged device 2B also includes a second non-directional wireless communication unit 23B. The communication unit 23A and the second non-directional wireless communication unit 23B cooperate with each other, and are used to send position information to the charging device in the uncharged state, and according to the position information, it can be judged whether the charged device is located at the charging position, so as to start charging be ready.

Specifically, the first non-directional wireless communication unit and the second non-directional wireless communication unit include but are not limited to WIFI, Zigbee or Bluetooth communication units.

Although the optical communication unit has the advantage of strong anti-interference, but whether it is wired optical communication or wireless optical communication, there is a problem of alignment, so it is not very fast. On the contrary, non-directional wireless communication such as WIFI can establish a communication connection without alignment. Although it is fast, it is easily disturbed during charging. The embodiment of the present invention communicates through the first non-directional wireless communication unit 23A and the second non-directional wireless communication unit 23B in the uncharged state, and communicates through the first optical communication unit 22A and the second optical communication unit in the charging state. The unit 22B communicates, thereby combining the advantages of the two communication methods, and can provide a convenient and reliable communication connection during the entire charging process from charging preparation, charging start to charging end.

Example 3

FIG. 3 shows a flow chart of a charging method according to an embodiment of the present invention. The charging method may be applicable to the charging device and the charged device in the above-mentioned Embodiments 1 and 2, for example. As shown in Figure 3, the charging method may include:

S301. Determine whether the charging device is in the charging state; when it is judged that the charging device is in the charging state, execute step S302; otherwise, repeat step S301, optionally, repeat step S301 at a certain time interval;

Specifically, it can be judged whether it is in a charging state by detecting that the current of the charging interface exceeds a predetermined threshold.

S302. Receive the battery status information sent by the charging device through the optical communication unit set on the charging device;

Wherein, the optical communication unit is, for example, the optical communication unit described in Embodiment 1. The battery status information sent by the charging device may include, for example, status information such as voltage and temperature of the battery.

S303. Adjust the charging state according to the battery state information.

Specifically, when the battery temperature of the device to be charged is too high, the charging voltage or current can be reduced; when there is an abnormality in the battery, charging can be stopped.

In the charging method of the embodiment of the present invention, by using the optical communication unit to communicate with the charging device in the charging state with the largest electromagnetic interference, even in occasions where the electromagnetic shielding is limited or not applicable, the interference can be reduced and the transmission of the communication can be ensured. Effective and reliable.

Although optical communication has the advantage of strong anti-interference, due to its strong directional characteristics, it is difficult to rely solely on optical communication to realize the automatic cooperation between the charging device and the charged device. Therefore, in some optional embodiments, as shown in Figure 4, may include:

S401. Obtain the location of the charged device through a non-directional wireless communication unit provided on the charging device.

Among them, the non-directional wireless communication unit on the charging device should first establish a communication connection with the non-directional wireless communication unit on the charged device, and then receive the location information sent by the charged device, and the charged device can use positioning devices such as GPS Obtain its location information;

S402. Determine whether the device to be charged has reached a charging position. When the charging position is reached, step S403 is executed; otherwise, step S402 is repeatedly executed. Optionally, step S402 can be repeatedly executed at a certain time interval;

The charging position may be a preset position range, and the position range enables convenient connection between the charging interface of the charging device and the charging interface of the device being charged. For example, when the charged device is a trolleybus and the charging device is a reverse charging bow installed on the platform, the passenger position of the trolleybus can be the charging position;

S403. Control the charging interface of the charging device to contact the charging interface on the charged device.

This step may be accompanied by actions such as aligning, approaching, and contacting the charging interface of the charging device and the charging interface of the device to be charged. For example, when the charged device is a trolleybus and the charging device is a reverse charging bow, when the trolleybus reaches the charging position, the reverse charging bow is controlled to descend so that the charging interface on the reverse charging bow is connected to the charging port on the top of the trolleybus. The interface approaches and makes contact.

After the charging interface is contacted and before charging starts, there can also be some preparations before charging. For example, through the above-mentioned non-directional wireless communication unit, the charging device sends charging device information to the charged device, such as whether the charging device is DC charging or AC charging, the charging voltage and the maximum charging current of the charging device; According to the charging device information, configure the charging request data and send it to the charging device. The charging request data includes charging time and charging current curve, for example; the charging device detects the battery voltage of the charged device, and then compares the battery voltage with the received charging request The data is matched; if it matches, the charging starts, otherwise it refuses to charge.

In addition, since the non-directional wireless communication will be interfered after starting charging, after the charging interface of the charging device is in contact with the charging interface on the charged device, it may also include:

disconnecting the communication connection between the non-directional wireless communication unit on the charging device and the charged device.

S404. Refer to step S301 for details;

S405. Refer to step S302 for details;

S406. For details, refer to the description in step S303.

Example 4

Fig. 5 is a schematic diagram of a charging device according to an embodiment of the present invention. As shown in Figure 5, the charging device includes: a charging interface 51, an optical communication unit 52, a memory 53 and a processor 54, and the charging interface, the optical communication unit, the memory and the processor are connected by a bus 50 are interconnected, the memory stores computer instructions, and the processor implements the charging method described in Embodiment 3 by executing the computer instructions.

Specifically, the above-mentioned charging interface and optical communication unit may be the charging interface and optical communication unit as described in Embodiment 1; the memory is, for example, a non-transitory computer-readable storage medium, including but not limited to a mechanical hard disk, an optical disk, a solid-state Hard disk, flash memory, etc.; the processor is, for example but not limited to, a central processing unit CPU, a digital signal processor DSP, a single-chip microcomputer MCU or a microprocessor unit MPU.

Example 5

An embodiment of the present invention provides a non-transitory computer-readable storage medium, the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to implement the charging method described in Embodiment 3.

Apparently, the above-mentioned embodiments are only examples for clear description, rather than limiting the implementation. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. And the obvious changes or changes derived therefrom are still within the scope of protection of the present invention.

Claims (11)

1. A kind of 1. charging equipment, it is characterised in that including：

   First charging inlet, for being electrically charged equipment charge；

   First optical communication unit, for when the charging equipment is in charged state, being electrically charged equipment transmission described in reception Battery status information；

   Output control unit, for adjusting charged state according to the battery status information.
2. 2. charging equipment according to claim 1, it is characterised in that the first optical communication unit is wireless laser communication Unit.
3. 3. charging equipment according to claim 1 or 2, it is characterised in that also include：

   First non-directional radio communication unit, for when the charging equipment is not in charged state, being electrically charged described in reception The positional information that equipment is sent.
4. 4. according to the charging equipment any one of claim 1-3, it is characterised in that the charging equipment is reversely by electricity Bow.
5. 5. one kind is electrically charged equipment, it is characterised in that including：

   Second charging inlet, for coordinating with the first charging inlet of charging equipment to receive electric energy；

   Second optical communication unit, for it is described be electrically charged equipment and be in charged state when, the first light with the charging equipment Communication unit coordinates, to send battery status information to the charging equipment.
6. 6. according to claim 5 be electrically charged equipment, it is characterised in that the second optical communication unit is that wireless laser leads to Interrogate unit.
7. 7. it is electrically charged equipment according to claim 5 or 6, it is characterised in that also include：

   Second non-directional radio communication unit, for it is described be electrically charged equipment and be not in charged state when, set with the charging The first standby non-directional radio communication unit coordinates, to send positional information to the charging equipment.
8. A kind of 8. charging method, it is characterised in that including：

   Judge whether charging equipment is in charged state；

   When judging that the charging equipment is in charged state, received by the optical communication unit being arranged on the charging equipment It is electrically charged the battery status information of equipment transmission；

   Charged state is adjusted according to the battery status information.
9. 9. charging method according to claim 8, it is characterised in that judge the charging equipment whether in filling described Before the step of electricity condition, in addition to：

   By the non-directional radio communication unit that is arranged on the charging equipment obtain described in be electrically charged the position of equipment；

   It is electrically charged whether equipment reaches charge position described in judgement；

   When it is described be electrically charged equipment and reach charge position when, control the charging inlet of the charging equipment to be electrically charged equipment with described On charging inlet contact.
10. A kind of 10. charging equipment, it is characterised in that including：Charging inlet, optical communication unit, memory and processor, it is described to fill Interconnected between electrical interface, the optical communication unit, the memory and the processor by bus, in the memory Computer instruction is stored with, the processor is by performing the computer instruction, so as to realize described in claim 8 or 9 Method.
11. A kind of 11. non-transient computer readable storage medium storing program for executing, it is characterised in that including：The non-transient computer readable storage Medium storing computer instructs, and the computer instruction is used to make computer realize the method described in claim 8 or 9.