CN109802458B - Discharging socket for electric automobile, discharging system, discharging method and automobile - Google Patents
Discharging socket for electric automobile, discharging system, discharging method and automobile Download PDFInfo
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- CN109802458B CN109802458B CN201910055933.3A CN201910055933A CN109802458B CN 109802458 B CN109802458 B CN 109802458B CN 201910055933 A CN201910055933 A CN 201910055933A CN 109802458 B CN109802458 B CN 109802458B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention relates to a discharge socket for an electric automobile, a discharge system, a discharge method and an automobile, and aims to solve the problems of high cost and low use rate caused by the fact that a special discharge gun is needed when a power battery of the electric automobile is discharged. This electric automobile is with socket that discharges includes: a contact key arranged on the socket shell; the socket is formed on the socket shell and used for inserting a plug of the electric equipment, and the socket is also used for communicating a bidirectional charger through a discharging loop; the demand signal enabling circuit is used for being connected with the bidirectional charger and provided with a switch connected with the contact type key; when the plug of the electric equipment is inserted into the socket, the contact type key presses to push the switch to be conducted, and the demand signal enabling circuit generates an enabling signal for driving the bidirectional charger to work, so that the bidirectional charger supplies power to the electric equipment through the discharging loop.
Description
Technical Field
The invention belongs to the field of discharge control of power batteries, and particularly relates to a discharge socket for an electric automobile, a discharge system, a discharge method and an automobile.
Background
At present, the electric automobile not only charges the power battery of the electric automobile by the power grid, but also discharges the power battery outwards by the bidirectional charger so as to be used by electric equipment suitable for a 220VAC power grid. In the process of discharging the electric automobile outwards, a discharging loop and a discharging gun meeting the national standard requirement are required to be arranged on the electric automobile, when discharging the electric automobile outwards, the discharging gun is inserted into a socket of the electric automobile to be communicated with the discharging loop, a signal for informing the insertion of the discharging gun is given out to a vehicle-mounted end after the discharging gun is inserted into the socket, and after the other end of the discharging gun is inserted into electric equipment, the discharging gun sends out another signal for informing the connected electric equipment to the vehicle-mounted end, so that the vehicle-mounted end performs discharging control according to the received signal.
The prior art has the disadvantage that a discharge gun is specially designed, and the electric equipment must have an interface matched with the discharge gun to charge the electric equipment through a power battery of the electric automobile. Many electric equipment in the prior art is not provided with an interface matched with a discharge gun, for example, a mobile phone, a charger, a humidifier and other articles commonly used in a series of life cannot be charged by means of a power battery of an electric automobile. For this type of device, it can only be powered by means of a low-voltage battery on the vehicle. As can be seen from the above description, in the prior art, for a power battery, because a special discharging gun is needed, the rechargeable objects are fewer, and the product utilization rate is low; meanwhile, the manufacturing cost and the use cost of the product are increased.
Disclosure of Invention
The invention aims to provide a discharging socket for an electric automobile, a discharging system, a discharging method and an automobile, so as to solve the problems of high cost and low use rate caused by the need of using a special discharging gun when a power battery of the electric automobile is discharged.
The technical scheme of the invention is as follows:
the invention provides a discharge socket for an electric automobile, which comprises:
a contact key arranged on the socket shell;
the socket is formed on the socket shell and used for inserting a plug of the electric equipment, and the socket is also used for communicating a bidirectional charger through a discharging loop;
the demand signal enabling circuit is used for being connected with the bidirectional charger and provided with a switch connected with the contact type key;
the plug of the electric equipment is inserted into the socket, the contact type key is pressed to push the switch to be conducted, and the demand signal enabling circuit generates an enabling signal for driving the bidirectional charger to work, so that the bidirectional charger supplies power to the electric equipment through the discharging loop.
Preferably, the electric equipment compresses tightly the contact type key in the process of inserting the electric equipment into the socket.
Preferably, the discharge socket further comprises:
the reset piece is used for enabling the contact type key to rebound after being pressed;
when the plug of the electric equipment is taken out of the socket, the pressed contact type key rebounds under the action of the reset piece and drives a switch in the demand signal enabling circuit to be disconnected, so that the bidirectional charger stops supplying power to the electric equipment.
Preferably, before or after the electric equipment is inserted into the socket, the contact key is pressed manually.
Preferably, the discharge socket comprises at least two sockets with different shapes and at least two contact keys;
the demand signal enabling circuit is provided with at least two conductive branches which are arranged in parallel, and each conductive branch corresponds to the socket with one shape;
each conductive branch is respectively provided with a shunt resistor and a switch, each contact type key is correspondingly connected with the switch on one conductive branch, and the shunt resistors on the conductive branches have different resistance values;
when the switches in at least two conducting branches are conducted simultaneously or respectively, enabling voltages carried in enabling signals generated by the demand signal enabling circuit are different, so that current output limit values output by the bidirectional charger are different.
Preferably, the socket of each shape is adapted for insertion of a two-hole plug or a three-hole plug.
According to another aspect of the present invention, there is also provided a discharge system for an electric vehicle, including: the power battery, the bidirectional charger and the control management system are connected in pairs, and the discharging socket for the electric automobile is provided with the power battery, the bidirectional charger and the control management system;
after a plug of the electric equipment is inserted into the socket, the bidirectional charger sends a discharge demand to the control management system according to an enabling signal generated by the demand signal enabling circuit, so that the control management system controls the power battery to discharge according to the discharge demand; the bidirectional charger converts direct current output by the power battery into alternating current and supplies power to electric equipment through the discharging loop.
According to another aspect of the present invention, there is also provided a discharging method for an electric vehicle, applied to the above discharging system for an electric vehicle, the method including:
the bidirectional charger receives an enabling signal generated by the requirement enabling circuit after a plug of the electric equipment is inserted into the socket, and sends a discharge requirement to the control management system according to the enabling signal;
the control management system receives the discharge requirement and controls the power battery to discharge according to the discharge requirement;
the bidirectional charger converts direct current output by the power battery and supplies power to electric equipment through the discharging loop.
Preferably, the step of controlling the management system to receive the discharge requirement and control the power battery to discharge according to the discharge requirement includes:
after receiving the discharge requirement, the control management system judges whether the power battery meets a discharge condition;
if yes, controlling the power battery to discharge;
otherwise, the discharge demand is ignored.
Preferably, the step of converting the direct current output by the power battery by the bidirectional charger and supplying the converted alternating current to the electric equipment through the discharging loop includes: the bidirectional charger performs AC/DC conversion on direct current output by the power battery;
the bidirectional charger determines a current output limit value of the bidirectional charger according to the enabling voltage carried in the enabling signal; and the bidirectional charger supplies power to the electric equipment through the discharging loop according to the current demand of the electric equipment under the current output limit value.
Preferably, the method further comprises:
after the plug of the electric equipment is inserted into the socket, the bidirectional charger judges whether to output current to the electric equipment in a preset time period;
if not, the bidirectional charger stops working;
otherwise, the electric equipment is continuously powered through the discharging loop.
Preferably, the method further comprises:
the bidirectional charger judges whether the current output to the electric equipment exceeds the current output limit value of the bidirectional charger;
if yes, the bidirectional charger stops working;
otherwise, the electric equipment is continuously powered through the discharging loop.
Preferably, the method further comprises:
the bidirectional charger judges whether a discharge loop between the bidirectional charger and the discharge socket fails in insulation or not;
if yes, the bidirectional charger stops working;
otherwise, the electric equipment is continuously powered through the discharging loop.
According to another aspect of the invention, the invention further provides an automobile, which comprises the electric automobile discharging system.
The beneficial effects of the invention are as follows:
when the power battery is needed to charge the electric equipment, a professional discharging gun is not needed, a plug of the electric equipment can be directly inserted into the discharging socket, a loop is established between the plug and the discharging loop, and the alternating current obtained through conversion of the bidirectional charger is used for the electric equipment through the established loop. For example, a plug of a series of daily necessities such as a mobile phone, a charger, a humidifier, a small air purifier, a color lamp, etc. may be inserted into the discharge socket to charge the same by using a power battery. For users, the power battery can be used for charging electric equipment frequently, so that the utilization rate of the power battery is improved; meanwhile, as the accessory of the discharge gun is omitted, the manufacturing cost and the use cost of the product are reduced.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a block diagram of a discharge socket according to the present invention;
FIG. 3 is an internal circuit diagram of a discharge socket according to the present invention;
reference numerals illustrate: 1. a power battery; 2. a bidirectional charger; 3. a discharge socket; 4. an electric device; 11. a direct current high voltage harness; 31. an alternating current high voltage wire harness; 32. a demand enable signal line; 33. a 3-pin jack of 10A; 34. a 2-pin jack of 10A; 35. 16A 3-pin jack; 36. a first contact key; 37. a second contact key; 361. a first spring; 371. a second spring; 38. a demand signal enable circuit; 41. 10A of a 3-foot powered device; 42. 10A of a 2-foot powered device; 43. 16A, a 3-foot powered device.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 2 and 3, the present invention provides a discharge socket for an electric vehicle, comprising: a contact key arranged on the socket shell; a socket formed on the socket housing for inserting a plug of the electric equipment 4, wherein the socket is also used for communicating the bidirectional charger 2 through a discharging loop; a demand signal enabling circuit 38 for connection with the bidirectional charger 2, the demand signal enabling circuit 38 having a switch connected with the contact key; the plug of the electric equipment 4 is inserted into the socket, the contact type key is pressed to push the switch to be conducted, and the demand signal enabling circuit 38 generates an enabling signal for driving the bidirectional charger 2 to work, so that the bidirectional charger 2 supplies power to the electric equipment 4 through the discharging loop.
As shown in fig. 1 and 2, the discharge socket 3 has a socket housing, a cavity is defined in the socket housing, the demand signal enabling circuit 38 is disposed in the cavity, and the socket is an opening in the socket housing. The discharging loop part connected with the bidirectional charger 2 is arranged in the cavity, and after the plug of the electric equipment 4 is inserted into the socket, the plug is communicated with the electricity loop to establish a loop for the alternating current to pass through.
The socket has different shapes, and the shape of the socket can be designed according to relevant national standards of different areas, and is not particularly limited in the application. However, for the sockets in the present application, when the electric device 4 is plugged into the sockets with different shapes, the current output limit value that can be output by the bidirectional charger 2 is different, and is implemented according to the difference of the enabling voltages carried in the enabling signals sent by the requirement signal enabling circuit 38, and the principle herein will be described in detail in the following.
As shown in fig. 1, for a discharging loop that connects a bidirectional charger 2 and a socket, the discharging loop mainly includes an AC high-voltage harness 31 and a demand enabling signal line 32, where the AC high-voltage harness 31 is a three-phase three-wire AC harness that transmits AC power obtained by the bidirectional charger 2 after AC/DC conversion to the electric device 4. As shown in fig. 3, the demand signal enable circuit 38 has a power source for looping the demand signal enable circuit 38, and the demand enable signal line 32 is used for transmitting the enable signal generated by the demand signal enable circuit 38 to the bidirectional charger 2.
For the contact type key in the application, the contact type key is pressed in the process of inserting the electric equipment into the socket. Referring to fig. 1 and 2, the contact key may be disposed in a socket of the same shape, or may be disposed beside the socket, one end of the contact key is connected to a switch in the demand signal enabling circuit, and the other end slidably passes through a portion of the outer casing of the discharge socket 3 to be exposed outside the socket casing, so that the electric device 4 contacts with the contact key and gradually extrudes the contact key during the process of inserting the electric device 4 into the socket.
As shown in fig. 3, when the contact key is pressed by the electric equipment, the discharging socket 3 further includes: the reset piece is used for enabling the contact type key to rebound after being pressed; when the plug of the electric equipment 4 is taken out of the socket, the pressed contact type key rebounds under the action of the reset piece and drives the switch in the demand signal enabling circuit 38 to be disconnected, so that the bidirectional charger 2 stops supplying power to the electric equipment.
In the embodiment of the invention, the reset piece is a spring sleeved on the contact type key, the spring is limited between a limiting piece arranged on the contact type key and a plate inside the outer shell, and when the contact type key is pressed under the stress, the contact type key pushes the spring to be compressed; therefore, when the contact type key is not pressed any more, the contact type key can rebound under the rebound force of the spring and drive the switch to be disconnected.
Of course, in the present application, the restoring member is not limited to the spring described above, and any other member that can cause the contact key to rebound when not under force may be used.
Or, in the application, before or after the electric equipment is inserted into the socket, the contact type key is pressed manually. In this embodiment, the contact button may be arranged on the socket housing at a position which is not pressed by the electrical consumer, i.e. a distance is provided between the contact button arrangement position and the interface, which distance is such that the contact button is not pressed by the electrical consumer. Thus, by manually pressing the touch key, the switch in the demand signal enable circuit 38 is turned on. In this way, the operation of manually pressing the touch key may be performed before or after the electric device is inserted into the interface. In this way, for the on-off of the switch in the demand signal enabling circuit 38, the touch key needs to be repeatedly clicked, that is, the touch key is pressed once, and the switch is turned on; the contact key is pressed once again, and the switch is disconnected. The principle of manually pressing the contact type key to control the on-off of the switch is the same as that of the prior art that the socket is electrified or powered off by clicking a click button in the household plug wire socket.
Thus, for the above-mentioned discharging socket 3, when the power battery 1 is needed to charge the electric equipment 4, no special discharging gun is needed, but the plug of the electric equipment 4 can be directly inserted into the discharging socket, the plug and the discharging circuit establish a circuit, and the bidirectional charger 2 converts the obtained alternating current to power the electric equipment 4 through the established circuit. For example, a plug of a series of daily necessities such as a mobile phone, a charger, a humidifier, a small-sized air purifier, a color lamp, etc. may be inserted into the discharge socket 3 to be charged by the power battery 1. For a user, the power battery 1 can be used for charging the electric equipment 4 frequently, so that the utilization rate of the power battery 1 is improved; meanwhile, as the accessory of the discharge gun is omitted, the manufacturing cost and the use cost of the product are reduced.
In addition, for the discharge socket 3 in the present application, a plurality of sockets that can supply different magnitudes of electric current are provided. As shown in fig. 1 to 3, the discharge socket 3 includes at least two different shapes of the socket and at least two contact keys; the demand signal enabling circuit 38 has at least two parallel conductive branches, each corresponding to a shape of the socket; each conductive branch is respectively provided with a shunt resistor and a switch, each contact type key is correspondingly connected with the switch on one conductive branch, and the shunt resistors on the conductive branches have different resistance values; when the switches in at least two conductive branches are turned on simultaneously or respectively, the enable voltages carried in the enable signals generated by the demand signal enable circuit 38 are different, so that the current output limit values output by the bidirectional charger 3 are different.
As can be seen from fig. 3, each of the conductive branches has a switch and a shunt resistor, one switch being connected to each contact button. Because the resistances of the shunt resistors on different conductive branches are different, according to the socket into which the electric device is inserted, the voltage generated at the position of the a detection point in the demand signal enabling circuit 38 can be different, the voltage detected at the a detection point is taken as an enabling voltage to be carried in an enabling signal, after the bidirectional charger 2 receives the enabling signal, according to the difference of the enabling voltage carried in the enabling signal, the bidirectional charger 2 can select different current output limit values, and then current is provided according to the specific demands of the electric device 4.
Under the condition that the contact type keys are pressed manually, before or after the electric equipment is inserted into the interfaces with corresponding shapes, the contact type keys with the corresponding shapes are required to be pressed manually to conduct the corresponding switches. In order to facilitate the confirmation of the switch in the conductive branch corresponding to each contact key, the contact keys can be conveniently distinguished by the user by coating different colors, or designing the shape of the contact key to be the same as the shape of the corresponding interface, or arranging the contact key side by side with the corresponding interface, and the like.
Specifically, as shown in fig. 3, in the embodiment of the present application, there are 2 kinds of sockets having different shapes, and each of the sockets having different shapes is configured to be plugged by a two-hole plug or a three-hole plug (such as the 3-pin jack 22 of 10A, the 2-pin jack 34 of 10A and the 3-pin jack 35 of 16A in fig. 3), and at the same time, the conductive branch of the demand signal enabling circuit 38 is 2 paths. The demand signal enabling circuit 38 includes a power supply, a third resistor R3 connected to the power supply, and 2 conductive branches, wherein a first switch K1 and a shunt resistor R1 are disposed on a conductive branch connected to a first-shape interface (i.e., a 10A interface), and a second switch K2 and a shunt resistor R2 are disposed on a conductive branch connected to a second-shape interface (i.e., a 16A interface).
When the electric device 4 is inserted into the socket with the first shape (for example, the discharging socket 3 in fig. 1 is only connected with the 2-pin electric device 42 or the 3-pin electric device 41 of 10A), the first contact key 36 adjacent to the socket with the first shape drives the first switch K1 to be conducted under the extrusion of the electric device, and the electric device 4 is not inserted into the socket with the second shape, so that the first voltage detected at the detection point A can be represented by the formula
And (5) calculating to obtain the product. According to the first embodiment, the bidirectional charger 2The voltage determines that the current output limit value is 10A, and then current output is carried out according to the requirements of the electric equipment 4. For example, for a mobile phone, the current required for the mobile phone is usually 1A or 2A, when the mobile phone needs to be charged, a charging plug of the mobile phone is inserted into a socket of a first shape, and the mobile phone is inserted into a charging wire, so that a path is established among the mobile phone, the charging wire, the charging plug and a discharging loop, according to the calculation, the maximum output current which can be provided by the bidirectional charger 2 is 10A, but since the mobile phone needs only 1A or 2A, the bidirectional charger 2 outputs the current of 1A or 2A to the mobile phone in this case. However, if the user inserts the electric device 4 having a demand greater than 10A into the socket of the first shape, since the current limit that the bidirectional charger 2 can output is 10A, the bidirectional charger 2 supplies power to the electric device 4 according to the maximum current limit (i.e., 10A).
When the electric device 4 is inserted into the socket with the second shape (the discharging socket is only connected with 16A electric device), the second contact key 37 adjacent to the socket with the second shape drives the second switch K2 to be conducted under the extrusion of the electric device 4, and as the electric device is not inserted into the socket with the first shape, the second voltage detected at the A detection point can pass through the formula
And (5) calculating to obtain the product. The bidirectional charger 2 determines that the current output limit value is 1 to 6A according to the first voltage, and then outputs current according to the requirements of the electric equipment 4.
When the electric device 4 is inserted into both the first-shaped socket and the second-shaped socket (for example, when the discharging socket 3 is connected with the 3-foot electric device 41 of the 16A electric devices 43 and 10A or when the discharging socket is connected with the 2-foot electric device 42 of the 16A electric devices 43 and 10A). The end face of the electric device 4 presses the first contact key 36 and the second contact key 37, so that the first switch K1 and the second switch K2 are closed, and the second voltage detected at the detection point A can pass through the formula
And (5) calculating to obtain the product. The bidirectional charger 2 determines that the current output limit value is 1 to 6A according to the first voltage, and then outputs current according to the requirements of the electric equipment 4.
When the plug of the electric equipment 4 is pulled out of the discharge socket, the force for pressing the first contact key 36 and the second contact key 37 disappears, the first contact key 36 and the second contact key 37 rebound under the rebound force of the first spring 361 and the second spring 371, so that the first switch K1 and the second switch K2 are disconnected, at the moment, the voltage at the detection point A is not generated, the bidirectional charger 2 stops working after the voltage input at the detection point A is not detected, and sends a request for stopping discharging to the whole automobile, the power battery 1 disconnects the discharge loop relay, and the discharging of the whole automobile is stopped.
According to the scheme, the enabling signal of the discharge requirement can be triggered without manual operation, namely, when the plug of the electric equipment 4 is inserted into the discharge socket 3, the end face of the plug presses the contact type key to enable the switch in the requirement signal enabling circuit 38 to be closed, so that the enabling signal of the discharge requirement is generated in the requirement signal enabling circuit 38, and the enabling signal of the discharge requirement is generated without manual operation, so that the scheme is more convenient and intelligent.
In addition, the discharge socket 3 in the present application may be provided in the vehicle cabin or outside the vehicle cabin depending on the position of the discharge socket on the vehicle. If the waterproof cover is arranged outside the carriage, the waterproof cover which can shield the discharge socket to prevent sundries from entering can be arranged on the carriage shell, and the waterproof cover is opened when the waterproof cover is used; when not in use, the waterproof cover is closed. In view of the frequency of use by the user, in the embodiment of the present application, it is preferable to provide in-vehicle positions such as an instrument panel rack in the vehicle cabin, a door, and a armrest box between front seats.
According to another aspect of the present invention, there is also provided a discharge system for an electric vehicle, including: the power battery 2, the bidirectional charger 2 and the control management system are connected in pairs, and the discharging socket 3 for the electric automobile is provided;
after the plug of the electric equipment 4 is inserted into the socket, the bidirectional charger 3 sends a discharge demand to the control management system according to an enabling signal generated by the demand signal enabling circuit 38, so that the control management system controls the power battery 1 to discharge according to the discharge demand; the bidirectional charger 2 converts direct current output by the power battery 1 into alternating current, and supplies power to the electric equipment 4 through the discharging loop.
Specifically, for the touch key, the touch key is manually pressed, and after the touch key is pressed to turn on the switch in the demand signal enabling circuit 38, the demand signal enabling circuit 38 generates an enabling signal.
For the manner of pressing the contact key by the electric device 4, in the process of inserting the electric device 4 into the socket, the electric device 4 presses the contact key to drive the switch in the demand signal enabling circuit 38 to be turned on.
The control system can be a power battery management system BMS, a whole vehicle management system VCU and other systems on the whole vehicle.
The power battery 1 and the bidirectional charger 2 are connected through a direct-current high-voltage wire harness 11.
After the bidirectional charger 2 detects the first voltage U1 or the second voltage U2 or the third voltage U3, a discharging demand is sent to the whole vehicle (control system), and the whole vehicle controls the power battery 1 to close a discharging loop relay in the whole vehicle under the condition of no fault, so that the bidirectional charger 2 starts to work, and the direct current of the power battery 1 is converted into 220V alternating current required by the electric equipment 4. When the bidirectional charger 2 detects the first voltage U1, the output current limit value of the bidirectional charger 2 is 10A, and when the bidirectional charger 2 detects that the output current exceeds 10A, the bidirectional charger stops working. If the bidirectional charger 2 detects the second voltage U2 or the third voltage U3, the output current limit value of the bidirectional charger 2 is 16A, and if the bidirectional charger 2 detects that the output current exceeds 16A, the bidirectional charger stops working. The effect of current limiting lies in preventing the heavy current demand that causes when consumer 4 trouble, and then seriously damages consumer 4 or discharge socket 3, improves the security of using, and two-way charger 2 can carry out insulation detection to the high voltage circuit that discharges simultaneously, in case the discovery insulation loses efficacy, then automatic stop work has also improved the security of using.
For the above-mentioned discharging system, the enabling signal of the discharging requirement can be triggered without manual operation, and when the plug of the electric equipment 4 is plugged into the discharging socket 3, the end face of the plug presses the contact switch to close the switch in the requirement signal enabling circuit 38, so that the enabling signal of the discharging requirement is generated in the requirement signal enabling circuit 38.
According to another aspect of the present invention, there is also provided a discharging method for an electric vehicle, applied to the above discharging system for an electric vehicle, the method including:
the bidirectional charger 2 receives an enabling signal generated by the requirement enabling circuit 38 after the plug of the electric equipment 4 is inserted into the socket, and sends a discharge requirement to the control management system according to the enabling signal;
the control management system receives the discharge requirement and controls the power battery 1 to discharge according to the discharge requirement;
the bidirectional charger 2 converts direct current output by the power battery 1, and supplies power to the electric equipment 4 through the discharging loop.
Preferably, the step of controlling the power battery 1 to discharge according to the discharge demand includes:
after receiving the discharge requirement, the control management system judges whether the power battery 1 meets a discharge condition or not;
if yes, controlling the power battery 1 to discharge;
otherwise, the discharge demand is ignored.
The control management system mainly determines whether the power battery meets a discharging condition according to relevant electrical parameters (such as current, voltage and other parameters) of the power battery 1, and if the power battery 1 is currently in a charging state, or the relevant electrical parameters of the power battery 1 determine that the power battery 1 is currently in a fault, the power battery 1 cannot enter a discharging state.
If the control management system determines that the power battery 1 satisfies the discharge condition, it discharges the power battery 1 by controlling the discharge circuit inside the power battery 1 to be turned on and to enter a discharge state.
Preferably, the step of converting the direct current output by the power battery 1 by the bidirectional charger 2 and supplying the converted alternating current to the electric equipment 4 through the discharging loop includes: the bidirectional charger 2 performs AC/DC conversion on the direct current output by the power battery 1;
the bidirectional charger 2 determines a current output limit value of the bidirectional charger 2 according to the enabling voltage carried in the enabling signal; the bidirectional charger 2 supplies power to the electric equipment 4 through the discharging loop according to the current demand of the electric equipment 4 under the current output limit value.
Under the condition, if the required current of the electric equipment 4 exceeds the current output limit value, the bidirectional charger 2 supplies power to the electric equipment 4 according to the current output limit value; otherwise, when the required current of the electric equipment 4 is lower than the current output limit value, the electric equipment is powered according to the 4 required current of the electric equipment.
For loads such as mobile phones, some users are used to continuously insert a plug into a socket, and forget to unplug the plug when the mobile phone is not charged; in order to prevent the occurrence of safety accidents, in the present application, the method further comprises:
after the plug of the electric equipment 4 is inserted into the socket, the bidirectional charger 2 judges whether to output current to the electric equipment 4 in a preset time period; if not, the bidirectional charger 2 stops working; otherwise, the electric equipment 4 is continuously supplied with power through the discharging loop.
If the plug of the electric device 4 is inserted into the socket, but the electric device 4 is not connected with the plug, the whole discharging system cannot establish a discharging loop, at this time, the bidirectional charger 2 cannot output current, if no current is detected in a preset time period, the user is determined to be not connected with the electric device 4, and under the condition, the bidirectional charger 2 stops working and enters a dormant state. In addition, the above-described preset time period may be set to a shorter period of time of 90s,60s,30s,45s, or the like.
In view of the possible presence of equipment failure in the discharge system, resulting in failure of the entire discharge system, in this application the method further comprises: the bidirectional charger 2 judges whether the current output to the electric equipment 4 exceeds the current output limit value of the bidirectional charger 2; if yes, the bidirectional charger 2 stops working; otherwise, the electric equipment 4 is continuously supplied with power through the discharging loop. If the current output to the electric equipment 4 exceeds the current output limit value of the bidirectional charger 2, the fault of the discharging system is indicated, and at the moment, the electric equipment is not suitable for being charged any more, and maintenance and detection should be carried out as soon as possible.
Because the alternating current voltage output by the bidirectional charger 2 is higher, in order to prevent the safety accident from occurring due to the insulation failure of the circuit, in the application, a protection mechanism for the insulation failure is also designed, wherein the method further comprises: the bidirectional charger 2 judges whether a discharge loop between the bidirectional charger 2 and the discharge socket 3 fails in insulation; if yes, the bidirectional charger 2 stops working; otherwise, the electric equipment 4 is continuously supplied with power through the discharging loop.
By the method, the effect of discharging the electric equipment 4 through the power battery 1 is achieved. According to the method, the discharging is carried out without depending on a special discharging gun, only the plug configured when the electric equipment leaves the factory is inserted into the discharging socket 3, and the manual operation of a user is not needed. Compared with the prior art, the discharge gun is omitted, so that the manufacturing cost and the use cost of the product can be reduced; meanwhile, tedious operations of the power battery 1 in discharging the electric equipment are reduced.
According to another aspect of the invention, the invention further provides an automobile, which comprises the electric automobile discharging system.
The above disclosure is illustrative of the preferred embodiments of the present invention and, of course, should not be taken as limiting the scope of the invention, and those skilled in the art will recognize that all or part of the procedures described above can be performed without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (13)
1. A discharge socket for an electric vehicle, comprising:
a contact key arranged on the socket shell;
the socket is formed on the socket shell and used for inserting a plug of the electric equipment, and the socket is also used for communicating a bidirectional charger through a discharging loop;
the demand signal enabling circuit is used for being connected with the bidirectional charger and provided with a switch connected with the contact type key;
the plug of the electric equipment is inserted into the socket, the contact type key is pressed to push the switch to be conducted, the demand signal enabling circuit generates an enabling signal for driving the bidirectional charger to work, and the bidirectional charger supplies power to the electric equipment through the discharging loop;
the discharging socket comprises at least two sockets with different shapes and at least two contact keys;
the demand signal enabling circuit is provided with at least two conductive branches which are arranged in parallel, and each conductive branch corresponds to the socket with one shape;
each conductive branch is respectively provided with a shunt resistor and a switch, each contact type key is correspondingly connected with the switch on one conductive branch, and the shunt resistors on the conductive branches have different resistance values;
when the switches in at least two conducting branches are conducted simultaneously or respectively, enabling voltages carried in enabling signals generated by the demand signal enabling circuit are different, so that current output limit values output by the bidirectional charger are different, and the enabling voltages are detected at the same detection point position in the demand signal enabling circuit.
2. The discharge socket for an electric automobile according to claim 1, wherein the electric device compresses the contact key in the process of being inserted into the socket.
3. The discharge outlet for an electric vehicle according to claim 2, further comprising:
the reset piece is used for enabling the contact type key to rebound after being pressed;
when the plug of the electric equipment is taken out of the socket, the pressed contact type key rebounds under the action of the reset piece and drives a switch in the demand signal enabling circuit to be disconnected, so that the bidirectional charger stops supplying power to the electric equipment.
4. The electrical discharge outlet of claim 1, wherein the contact key is manually pressed before or after the electrical device is inserted into the socket.
5. The electrical discharge outlet of claim 2, wherein the sockets of each shape are configured for insertion of a two-hole plug or a three-hole plug.
6. A discharge system for an electric vehicle, comprising: the power battery, the bidirectional charger and the control management system are connected in pairs, and the discharging socket for the electric automobile is described in claim 5;
after a plug of the electric equipment is inserted into the socket, the bidirectional charger sends a discharge demand to the control management system according to an enabling signal generated by the demand signal enabling circuit, so that the control management system controls the power battery to discharge according to the discharge demand; the bidirectional charger converts direct current output by the power battery into alternating current and supplies power to electric equipment through the discharging loop.
7. A discharge method for an electric vehicle, applied to the discharge system for an electric vehicle according to claim 6, characterized in that the method comprises:
the bidirectional charger receives an enabling signal generated by the requirement enabling circuit after a plug of the electric equipment is inserted into the socket, and sends a discharge requirement to the control management system according to the enabling signal;
the control management system receives the discharge requirement and controls the power battery to discharge according to the discharge requirement;
the bidirectional charger converts direct current output by the power battery and supplies power to electric equipment through the discharging loop.
8. The method of claim 7, wherein the step of controlling the power cell to discharge based on the discharge demand and the control management system receiving the discharge demand comprises:
after receiving the discharge requirement, the control management system judges whether the power battery meets a discharge condition;
if yes, controlling the power battery to discharge;
otherwise, the discharge demand is ignored.
9. The method of claim 7, wherein the step of converting the direct current output by the power battery by the bi-directional charger and supplying the converted alternating current to the powered device through the discharge loop comprises: the bidirectional charger performs AC/DC conversion on direct current output by the power battery;
the bidirectional charger determines a current output limit value of the bidirectional charger according to the enabling voltage carried in the enabling signal; and the bidirectional charger supplies power to the electric equipment through the discharging loop according to the current demand of the electric equipment under the current output limit value.
10. The method of claim 7, wherein the method further comprises:
after the plug of the electric equipment is inserted into the socket, the bidirectional charger judges whether to output current to the electric equipment in a preset time period;
if not, the bidirectional charger stops working;
otherwise, the electric equipment is continuously powered through the discharging loop.
11. The method of claim 7, wherein the method further comprises:
the bidirectional charger judges whether the current output to the electric equipment exceeds the current output limit value of the bidirectional charger; if yes, the bidirectional charger stops working;
otherwise, the electric equipment is continuously powered through the discharging loop.
12. The method of claim 7, wherein the method further comprises:
the bidirectional charger judges whether a discharge loop between the bidirectional charger and the discharge socket fails in insulation or not; if yes, the bidirectional charger stops working;
otherwise, the electric equipment is continuously powered through the discharging loop.
13. An automobile comprising the electric discharge system for an electric automobile according to claim 6.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910055933.3A CN109802458B (en) | 2019-01-22 | 2019-01-22 | Discharging socket for electric automobile, discharging system, discharging method and automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910055933.3A CN109802458B (en) | 2019-01-22 | 2019-01-22 | Discharging socket for electric automobile, discharging system, discharging method and automobile |
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| CN109802458A CN109802458A (en) | 2019-05-24 |
| CN109802458B true CN109802458B (en) | 2023-04-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112744075A (en) * | 2019-10-31 | 2021-05-04 | 观致汽车有限公司 | Electric discharge device for electric vehicle and control method thereof |
| US11137419B2 (en) * | 2019-12-17 | 2021-10-05 | Analog Devices International Unlimited Company | Mutiple range current sensor techniques |
| CN111555388B (en) * | 2020-05-13 | 2022-05-27 | 东风汽车有限公司 | Vehicle-mounted discharging device and control method thereof |
| CN113991761A (en) * | 2020-07-27 | 2022-01-28 | 威马智慧出行科技（上海）有限公司 | Discharging control system and method of vehicle-mounted charger and new energy automobile |
| CN115027292A (en) * | 2022-07-12 | 2022-09-09 | 中山市百斯拓灯饰有限公司 | Novel new forms of energy electric automobile discharger |
| CN115441240A (en) * | 2022-08-23 | 2022-12-06 | 重庆长安汽车股份有限公司 | New energy automobile discharging socket, discharging system and discharging method |
| CN115648979A (en) * | 2022-10-20 | 2023-01-31 | 深圳巴斯巴科技发展有限公司 | Charging and discharging adapter, charging and discharging method thereof and charging and discharging device |
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| TW200722950A (en) * | 2005-12-14 | 2007-06-16 | Golden Bridge Electech Inc | Power supply and method for detecting and adjusting voltages and currents for supplying power requirement of electronic apparatus |
| CN103187772B (en) * | 2011-12-31 | 2016-08-17 | 比亚迪股份有限公司 | The system that electric automobile and external electric automobile are powered |
| CN103779890A (en) * | 2013-12-31 | 2014-05-07 | 江苏嘉钰新能源技术有限公司 | Vehicle charging and emergency power supply system based on electric vehicle and control method thereof |
| CN108429453B (en) * | 2018-02-08 | 2020-07-17 | 中国第一汽车股份有限公司 | Vehicle high-voltage inverter conversion device and control method |
| CN109066241A (en) * | 2018-07-18 | 2018-12-21 | 江苏西比亚新能源科技有限公司 | Portable electric discharge rifle for electric vehicle |
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