CN113183898B - Device and method for preventing power shortage caused by excessive dark current and vehicle - Google Patents
Device and method for preventing power shortage caused by excessive dark current and vehicle Download PDFInfo
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- CN113183898B CN113183898B CN202110491429.5A CN202110491429A CN113183898B CN 113183898 B CN113183898 B CN 113183898B CN 202110491429 A CN202110491429 A CN 202110491429A CN 113183898 B CN113183898 B CN 113183898B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0238—Electrical distribution centers
Abstract
The invention discloses a device, a method and a vehicle for preventing power deficiency caused by excessive dark current, wherein a current monitoring unit detects a current signal of a loop where a general electric appliance is positioned; when the gear signal is a non-OFF gear signal, a switch of the gear signal relay is controlled to be at a normally closed end; in response to receiving the OFF gear signal, controlling a switch of the gear signal relay to switch from a normally closed end to a normally open end, and starting timing; when the timing time reaches the preset time, a switch of the time delay relay is controlled to be switched from a normally closed end to a normally open end; and in response to detecting that the current of a loop in which the general electric appliance is positioned is lower than a preset current threshold value, controlling a switch of the current relay to be switched from a normally closed end to a normally open end. The invention can effectively prevent the problem of power deficiency caused by overlarge dark current.
Description
Technical Field
The invention belongs to the technical field of automobile power shortage protection, and particularly relates to a device and method for preventing power shortage caused by excessive dark current and a vehicle.
Background
Many people now buy the automobile, but the automobile is likely to be driven without frequent driving, and the automobile is usually parked for a plurality of days; if the dark current is always large after the vehicle is parked, the vehicle is easy to lose power, and a user complains about the dark current in use.
At present, a common mode is to monitor whether a driver cabin is occupied or not through infrared rays, and when the driver is monitored to leave a seat, a high-power relay is used for disconnecting the whole circuit system, so that the aim of protecting a storage battery from power shortage is fulfilled. The defects are also obvious, and if the passenger or other rear passengers use the electrical appliances such as the radio, the user is not satisfied when the power supply of the whole car is disconnected.
At present, an intelligent universal meter is added to a whole vehicle power supply circuit, and when a blocking signal is received, the intelligent universal meter is started to monitor that dark current is overlarge so as to control a relay to disconnect the circuit, and the whole vehicle power supply is disconnected; when the unlocking signal is received, the intelligent multimeter is closed, the relay is in the attraction state, and the whole vehicle is kept to be powered. However, the system can be activated only by receiving the unlocking and locking signal, the power shortage risk exists under specific conditions, and the power supply of the high-power electric appliances of the intelligent automobile part is required to be kept, so that the method of overall power failure is not suitable for the intelligent automobile.
Therefore, there is a need to develop a new device, method and vehicle for preventing the power shortage caused by the excessive dark current.
Disclosure of Invention
The invention aims to provide a device and a method for preventing power deficiency caused by excessive dark current and a vehicle, and the device and the method can prevent the problem of power deficiency caused by excessive dark current.
In a first aspect, the device for preventing the battery from being deficient comprises a gear signal relay, a time delay relay, a current monitoring unit, a normal electric appliance and a normal electric appliance;
the normal electricity appliance is connected with the storage battery in series;
the common end of the gear signal relay is connected with the positive electrode of the storage battery, the normally closed end of the gear signal relay is connected with one end of a common electric appliance, the other end of the common electric appliance is connected with the negative electrode of the storage battery, the normally open end of the gear signal relay is connected with the common end of the time delay relay, and the gear signal relay is configured to: when the OFF gear level signal is not received, the switch of the gear signal relay is kept at the normally closed end, and when the OFF gear level signal is received, the switch of the gear signal relay is switched from the normally closed end to the normally open end;
the normally closed end of the time delay relay is connected with the normally closed end of the gear signal relay and a connecting point of a common electric appliance, the normally open end of the time delay relay is connected with the common end of the current relay, and the time delay relay is configured to: when the OFF gear level signal is not received, the switch of the delay relay is at the normally closed end, timing is started after the OFF gear level signal is received, and the switch of the delay relay is switched from the normally closed end to the normally open end when the timing time reaches the preset time;
the current monitoring unit is arranged on a loop of the general electric appliance and is used for detecting the current of the loop of the general electric appliance;
the normally open end of the current relay is connected with the normally closed end of the gear signal relay and a connection point of a general electric appliance, and the current relay is configured to: when the current monitoring unit monitors that the current is larger than a preset threshold value, the switch of the current relay is kept at the normally closed end, and when the current is smaller than the preset threshold value, the current relay works to enable the switch to be switched from the normally closed end to the normally open end.
In the embodiment, after receiving the OFF gear signal, the switch of the gear signal relay is from the normally closed end to the normally open end, and starts timing; the loop where the electric appliance is located enters an OFF gear working mode generally, each electric appliance is waited to enter a sleep state, when the timing time reaches the preset time, the switch of the time delay relay is from a normally closed end to a normally open end, and at the moment, the current of the whole car loop is monitored by the current relay. The dark current gradually decreases while waiting for the consumer to enter sleep mode. When the current detected by the current monitoring unit is lower than the preset current threshold value of the current relay, the switch of the current relay is switched from the normally closed end to the normally open end, so that the whole vehicle loop is kept in a closed state.
If the situation that the electric appliance cannot sleep occurs, the current in the loop is larger than a preset current threshold value, the current relay does not work, when an OFF gear signal is received and the timing time reaches the preset time, the switch of the gear signal relay is at the normal open end, the switch of the delay relay is at the normal open end, the switch of the current relay is at the normal closed end, the loop where the general circuit is located is in the disconnection state, and when the current relay monitors that the loop current is smaller than the preset current threshold value, the switch of the circuit relay is switched from the normal closed end to the normal open end, so that the general electric appliance is in power-OFF reset.
Optionally, the control device further comprises a first control module, wherein the first control module is connected with the control ends of the time delay relay and the gear signal relay respectively, and the first control module is further connected with the gear controller and used for receiving gear information sent by the gear controller and controlling the time delay relay and the gear signal relay to work based on the gear information.
Optionally, the current relay control device further comprises a second control module, the second control module is connected with the control end of the current relay, the second control module is further connected with the current monitoring unit, and the second control module controls the current relay to work based on signals detected by the current monitoring unit.
Optionally, the first control module and the second control module are both connected in series with the normal electric appliance.
Optionally, the constant-current electric appliance comprises a safe starting and emergency power supply part;
the general electric appliances include vehicle high-power electric appliances and do not involve a safe start and emergency power supply portion.
Optionally, the safety starting and emergency power supply part comprises an anti-theft system, a keyless control unit, an electronic ignition switch control unit and an instrument panel controller;
the high-power electric appliance of the vehicle does not relate to safe starting and emergency power supply parts, and the high-power electric appliance of the vehicle comprises a vehicle-to-machine system, an air conditioning system, a lamplight system and an intelligent driving system.
In a second aspect, the present invention provides a method for preventing battery power shortage, which adopts the device for preventing battery power shortage according to the present invention, and the method comprises the following steps:
the current monitoring unit detects a current signal of a loop where a general electric appliance is located;
when the gear signal is a non-OFF gear signal, a switch of the gear signal relay is controlled to be at a normally closed end;
in response to receiving the OFF gear signal, controlling a switch of the gear signal relay to switch from a normally closed end to a normally open end, and starting timing;
when the timing time reaches the preset time, a switch of the time delay relay is controlled to be switched from a normally closed end to a normally open end;
and in response to detecting that the current of a loop in which the general electric appliance is positioned is lower than a preset current threshold value, controlling a switch of the current relay to be switched from a normally closed end to a normally open end.
In a third aspect, the present invention provides a vehicle, which uses the device for preventing battery power shortage according to the present invention.
The invention has the following advantages: the invention can effectively control the magnitude of the dark current and avoid the state of power shortage of the storage battery caused by overlarge dark current. The invention effectively controls the magnitude of dark current and prolongs the service life of the storage battery; the complaints of users due to the electricity deficiency problem are reduced, and the reliability and the practicability of the whole vehicle are improved.
Drawings
Fig. 1 is a schematic structural view of the present embodiment;
in the figure: 1. the device comprises a storage battery, a normal electric appliance, a gear signal relay, a time delay relay, a current monitoring unit, a common electric appliance, a second control module, a first control module, a gear controller and a gear controller, wherein the storage battery, the normal electric appliance, the gear signal relay, the time delay relay, the current monitoring unit and the current monitoring unit are respectively arranged in sequence, the common electric appliance and the gear controller;
in the figure, the contact 1, the contact 3 and the contact 5 are normally closed ends, and the contact 2, the contact 4 and the contact 6 are normally open ends.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, in this embodiment, a device for preventing battery power shortage includes a gear signal relay 3, a time delay relay 4, a current relay 5, a current monitoring unit 7, a normal electric appliance 2, and a normal electric appliance 7.
The normal electric appliance 2 is connected with the storage battery 1 in series, so that the normal electric appliance 2 is ensured to be in a power state all the time.
The gear signal relay 3 is a common high-power relay, the public end of the gear signal relay 3 is connected with the positive electrode of the storage battery 1, the normally closed end of the gear signal relay 3 is connected with one end of the common electric appliance 7, the other end of the common electric appliance 7 is connected with the negative electrode of the storage battery 1, the normally open end of the gear signal relay 3 is connected with the public end of the time delay relay 4, and the gear signal relay 3 is configured to: when the OFF-gear level signal is not received, the switch of the gear signal relay 3 is kept at the normally closed end, and when the OFF-gear level signal is received, the switch of the gear signal relay 3 is switched from the normally closed end to the normally open end.
The normally closed end of the time delay relay 4 is connected with the normally closed end of the gear signal relay 3 and a connecting point of the common relay 7, and the normally open end of the time delay relay 4 is connected with the common end of the current relay 5. At present, the intelligent automobile has a plurality of electric appliances on the whole automobile, and the sleeping time of each electric appliance is inconsistent, so that the time delay relay 4 is needed to ensure that each electric appliance can reach the normal sleeping time. In the present embodiment, the time delay relay 4 is configured to: when the OFF gear level signal is not received, the switch of the delay relay 4 is at the normally closed end, the timing is started after the OFF gear level signal is received, and when the timing time reaches the preset time, the switch of the delay relay 4 is switched from the normally closed end to the normally open end.
The current monitoring unit 6 is arranged on a loop of the general electric appliance 7 and is used for detecting the current of the loop of the general electric appliance 7.
The normally open end of the current relay 5 is connected to the normally closed end of the gear signal relay 3 and the connection point of the general electric relay 7, the current relay 5 being configured to: when the current monitoring unit 6 monitors that the current is larger than a preset threshold value, the switch of the current relay 5 is kept at the normally closed end, and when the current is smaller than the preset threshold value, the current relay 5 works to enable the switch to be switched from the normally closed end to the normally open end.
In this embodiment, if the gear signal relay 3 receives the non-OFF gear signal, the gear signal relay 3 will not operate and the switch is at the normally closed end (i.e. 1), and then a large current can be normally used from the circuit through the general electric appliance 7 (high-power electric appliance). If the OFF gear signal is received, the gear signal relay 3 works, and the switch of the gear signal relay 3 is controlled to be switched from the normally closed end to the normally open end (namely, from 1 to 2), so that loop current passes through the position 2, and the whole car loop enters an OFF gear mode.
In this embodiment, the function of the time delay relay 4 is as follows: (1) ensuring that the whole vehicle electrical appliance can reach normal sleeping time; at present, more intelligent automobile appliances are used, and the sleeping time of each electric appliance is inconsistent. Therefore, the normal sleeping time of each electric appliance needs to be ensured, and the dark current needs to be reduced to the working state of the current relay 5; (2) If the electrical appliance cannot sleep normally, the power is forcibly cut off to reset the electrical appliance.
In this embodiment, the current relay 5 is used for monitoring the current in the loop of the general electric appliance 7 (high-power electric appliance). When the current monitoring unit monitors that the current on the loop of the general electric appliance 7 (high-power electric appliance) is larger than a preset current threshold value, the current relay 5 is in an inactive state (namely, the switch is at 5); when the current monitoring unit monitors that the current on the circuit of the general electric appliance 7 (high-power electric appliance) is smaller than the preset current threshold value, the current relay 5 is in a working state (namely, is switched from 5 to 6), so that the whole circuit is in a closed state.
In specific use: after the whole vehicle of the user is electrified, the gear signal relay 3 does not receive an OFF gear signal, the gear signal relay 3 does not work, the whole vehicle loop is kept in a closed state, and the general electric appliance 7 (high-power electric appliance) can be normally used; after the user finishes powering OFF the vehicle, the gear signal relay 3 receives the OFF gear signal, the switch of the gear signal relay 3 is switched from the normally closed end to the normally open end (namely, the switch is at 2), and the whole vehicle loop enters the OFF gear state. The time delay relay 4 counts time after receiving the OFF gear signal, and the whole vehicle loop enters a dark current monitoring state after the switch is closed (switched from the 3 state to the 4 state) for 30 minutes. In the process that the dark current of the electric appliance gradually enters the sleep state to be reduced, the current relay 5 is awakened to activate and monitor the dark current of the whole vehicle, so that the dark current cannot be too large to cause the power shortage of the whole vehicle.
If the accidental dark current of the electrical appliance cannot drop, the circuit is automatically disconnected (namely, the circuit is switched from 3 to 4) after the delay relay 4 reaches the preset time, the circuit where the electrical appliance 7 is positioned is disconnected at the moment, the current relay 5 is attracted (namely, the circuit is switched from 5 to 6), and the electrical appliance with excessive dark current is subjected to primary power-off reset, so that the condition of power shortage of the storage battery 1 is avoided.
In this embodiment, a device for preventing battery from power shortage further includes a first control module 9, where the first control module 9 is connected to the control ends of the delay relay 4 and the gear signal relay 3, and the first control module 9 is further connected to the gear controller 10, and is configured to receive the gear information sent by the gear controller 10, and control the delay relay 4 and the gear signal relay 3 to work based on the gear information.
In this embodiment, a device for preventing battery from being deficient further includes a second control module 8, the second control module 8 is connected with the control end of the current relay 5, the second control module 8 is further connected with the current monitoring unit 6, and the second control module 8 controls the current relay 5 to work based on the signal detected by the current monitoring unit 6.
In this embodiment, the first control module 9 and the second control module 8 are connected in series with the electric appliance 2, and are powered by the storage battery 1 because of low power consumption.
In this embodiment, the electric appliance 2 includes a safe start and emergency power supply part, which does not relate to a high-power electric appliance, and only ensures the lowest power consumption of the vehicle, for example: the electronic ignition switch comprises an anti-theft system, a keyless control unit, an electronic ignition switch control unit and an instrument panel controller.
In this embodiment, the general electric power consumer 7 includes a vehicle high-power electric power consumer and does not involve a safe start and emergency power supply portion, such as: vehicle machine system, air conditioning system, lighting system and intelligent driving system.
In this embodiment, a method for preventing battery power shortage, which uses the device for preventing battery power shortage as described in this embodiment, includes the following steps:
the current monitoring unit 6 detects a current signal of a loop where the general electric appliance 7 is positioned;
in response to receiving the gear signal being a non-OFF gear signal, controlling the switch of the gear signal relay 3 to be at a normally closed end (i.e., at 1);
in response to receiving the OFF gear signal, controlling the switch of the gear signal relay 3 to switch from the normally closed end to the normally open end (i.e., from 1 to 2), and starting timing;
when the timing time reaches the preset time, the switch of the time delay relay 4 is controlled to be switched from the normally closed end to the normally open end (namely, the switch 4 is switched from 3);
in response to detecting that the current of the circuit in which the general electric consumer 7 is located is lower than a preset current threshold, the switch of the current relay 5 is controlled to be switched from a normally closed end to a normally open end (i.e. from 5 to 6).
In this embodiment, the preset current threshold is within 100 mA.
In this embodiment, a vehicle employs the device for preventing battery power shortage as described in this embodiment.
Claims (7)
1. A device for preventing battery power shortage, characterized in that: the power transmission device comprises a gear signal relay (3), a time delay relay (4), a current relay (5), a current monitoring unit (6), a normal electric appliance (2) and a normal electric appliance (7);
the normal electricity consumer (2) is connected with the storage battery (1) in series;
the public end of gear signal relay (3) is connected with the positive pole of battery (1), and the normal close end of gear signal relay (3) is connected with the one end of general with electrical apparatus (7), and the other end of general with electrical apparatus (7) is connected with the negative pole of battery (1), and the normal open end of gear signal relay (3) is connected with the public end of delay relay (4), and gear signal relay (3) are configured to: when the OFF gear level signal is not received, the switch of the gear signal relay (3) is kept at the normally closed end, and when the OFF gear level signal is received, the switch of the gear signal relay (3) is switched from the normally closed end to the normally open end;
the normally closed end of the time delay relay (4) is connected with the normally closed end of the gear signal relay (3) and a connecting point of a general electric appliance (7), the normally open end of the time delay relay (4) is connected with the common end of the current relay (5), and the time delay relay (4) is configured to: when the OFF gear level signal is not received, the switch of the time delay relay (4) is at the normally closed end, the time is started after the OFF gear level signal is received, and the time reaches the preset time, so that the switch of the time delay relay (4) is switched from the normally closed end to the normally open end;
the current monitoring unit (6) is arranged on a loop of the general electric appliance (7) and is used for detecting the current of the loop where the general electric appliance (7) is positioned;
the normally open end of the current relay (5) is connected with the normally closed end of the gear signal relay (3) and the connection point of the general electric appliance (7), and the current relay (5) is configured to: when the current monitoring unit (6) monitors that the current is larger than a preset threshold value, the switch of the current relay (5) is kept at a normally closed end, and when the current is smaller than the preset threshold value, the current relay (5) works to enable the switch to be switched from the normally closed end to the normally open end;
the constant-power electric appliance (2) comprises a safe starting and emergency power supply part, and the constant-power electric appliance (2) does not relate to a high-power electric appliance;
the general electric power consumer (7) comprises a vehicle high-power electric power consumer and does not involve a safe starting and emergency power supply part.
2. The apparatus for preventing battery power shortage as claimed in claim 1, wherein: the gear control device comprises a gear controller (10), and is characterized by further comprising a first control module (9), wherein the first control module (9) is connected with the control ends of the time delay relay (4) and the gear signal relay (3) respectively, and the first control module (9) is further connected with the gear controller (10) and is used for receiving gear information sent by the gear controller (10) and controlling the time delay relay (4) and the gear signal relay (3) to work based on the gear information.
3. The apparatus for preventing battery power shortage as claimed in claim 2, wherein: the intelligent control system is characterized by further comprising a second control module (8), wherein the second control module (8) is connected with the control end of the current relay (5), the second control module (8) is further connected with the current monitoring unit (6), and the second control module (8) controls the current relay (5) to work based on signals detected by the current monitoring unit (6).
4. A device for preventing battery starvation according to claim 3, wherein: the first control module (9) and the second control module (8) are connected in series with the normal electric appliance (2).
5. The apparatus for preventing battery power shortage as claimed in claim 4, wherein: the safety starting and emergency power supply part comprises an anti-theft system, a keyless control unit, an electronic ignition switch control unit and an instrument panel controller;
the high-power electric appliance of the vehicle does not relate to safe starting and emergency power supply parts, and the high-power electric appliance of the vehicle comprises a vehicle-to-machine system, an air conditioning system, a lamplight system and an intelligent driving system.
6. A method for preventing battery power shortage, characterized in that the device for preventing battery power shortage according to any one of claims 1 to 5 is employed, comprising the steps of:
the current monitoring unit (6) detects a current signal of a loop where a general electric appliance (7) is positioned;
when a gear signal is a non-OFF gear signal, a switch of a gear signal relay (3) is controlled to be at a normally closed end;
in response to receiving the OFF gear signal, controlling a switch of the gear signal relay (3) to be switched from a normally closed end to a normally open end, and starting timing;
when the timing time reaches the preset time, the switch of the time delay relay (4) is controlled to be switched from the normally closed end to the normally open end;
and in response to detecting that the current of the loop where the general electric appliance (7) is positioned is lower than a preset current threshold value, controlling the switch of the current relay (5) to be switched from a normally closed end to a normally open end.
7. A vehicle, characterized in that: use of a device for preventing battery starvation as claimed in any one of claims 1 to 5.
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| CN202110491429.5A CN113183898B (en) | 2021-05-06 | 2021-05-06 | Device and method for preventing power shortage caused by excessive dark current and vehicle |
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| CN202110491429.5A CN113183898B (en) | 2021-05-06 | 2021-05-06 | Device and method for preventing power shortage caused by excessive dark current and vehicle |
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| CN113183898A CN113183898A (en) | 2021-07-30 |
| CN113183898B true CN113183898B (en) | 2023-05-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113775274B (en) * | 2021-08-13 | 2022-11-15 | 江铃汽车股份有限公司 | Control method and device of vehicle window motor control circuit, storage medium and system |
| CN113752965B (en) * | 2021-08-31 | 2024-03-22 | 重庆长安汽车股份有限公司 | Power management controller and car |
| CN114312629A (en) * | 2021-12-15 | 2022-04-12 | 东风汽车集团股份有限公司 | Power distribution system and method |
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