CN109728642B - Vehicle emergency power supply device and control method - Google Patents
Vehicle emergency power supply device and control method Download PDFInfo
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- CN109728642B CN109728642B CN201711038348.XA CN201711038348A CN109728642B CN 109728642 B CN109728642 B CN 109728642B CN 201711038348 A CN201711038348 A CN 201711038348A CN 109728642 B CN109728642 B CN 109728642B
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- vehicle
- power supply
- storage battery
- controller
- emergency power
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- 238000000034 method Methods 0.000 title abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000004146 energy storage Methods 0.000 claims description 24
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 4
- 229910001416 lithium ion Inorganic materials 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052744 lithium Inorganic materials 0.000 abstract description 10
- 230000002618 waking effect Effects 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Abstract
The invention relates to a vehicle emergency power supply device and a control method, wherein the emergency power supply device comprises 4 parts of circuits of switch detection, voltage acquisition, power supply control and isolated power supply, wherein the circuits comprise a controller, a relay, a diode, a lithium battery and corresponding wiring; detecting and judging a power-on intention through a switch, and waking up the device; judging the state of an external storage battery through voltage acquisition; finally, realizing the starting of emergency power supply through power supply control; the isolated power supply ensures that the power supply module of the device is only charged and not discharged under the general condition, thereby ensuring the effective endurance of the power supply module.
Description
Technical Field
The invention relates to a vehicle emergency power supply device and a control method, and belongs to the technical field of vehicle electrical.
Background
The engine of the traditional fuel vehicle is started, the engine needs to be driven to rotate in a short time by a starter so as to start the internal combustion engine to work, and the short-time high-speed rotation of the starter is powered by a vehicle storage battery; when the new energy automobile is started, the vehicle low-voltage storage battery is also required to supply power to the whole vehicle controller and drive the corresponding relay to work. If the automobile is idle for a long time or the storage battery is in short power supply due to other reasons, the automobile cannot be started normally. The fact that the vehicle cannot be started due to the fact that the vehicle battery is insufficient can bring great troubles, and the situation that the traditional fuel vehicle meets the situation in real life needs other batteries with sufficient electric quantity to be connected with the insufficient battery in parallel to be charged to restart the vehicle.
In the prior art, a part of new energy automobiles adopt an automatic storage battery charging system, and when the electric quantity of a storage battery is judged to be reduced to a preset threshold value, a vehicle control unit controls a DC-DC converter to work, consumes the electric quantity of a power battery and charges the storage battery; however, this solution also loses its effect when the state of charge of the power battery is low, and after a while, the battery still loses power, resulting in the vehicle not being able to start.
Disclosure of Invention
The invention aims to provide a vehicle emergency power supply device and a control method, which are used for solving the problem that a vehicle cannot be started due to the fact that a storage battery is in power shortage in the prior art.
In order to achieve the above object, the scheme of the invention comprises:
the invention relates to an emergency power supply device for a vehicle, which comprises an energy storage module, a controller and a switch device; the controller detects a trigger signal for connecting a vehicle storage battery and a vehicle starting switch, and the controller is also connected with the switching device in a control mode; the energy storage module is connected with the switch device in series and then connected with the storage battery in parallel.
The energy storage module further comprises a diode, the diode is connected with the switching device in parallel, and the cathode of the diode is connected with the anode of the energy storage module.
Further, the energy storage module is a lithium ion battery.
Further, the switching device is a relay.
Further, the controller detects connection of the storage battery.
The invention relates to a control method for the vehicle emergency power supply device, which comprises the following steps:
1) when the starting switch acts, the controller receives a starting signal of the vehicle starting switch;
2) the controller collects the voltage of the vehicle storage battery;
3) when the voltage of the vehicle storage battery is lower than a first set threshold value, the controller controls the switching device to be conducted, so that the energy storage module discharges to the vehicle starting circuit.
Further, the method also comprises the following steps:
4) the controller controls the switching device to be switched off after a set time, and collects the voltage of the vehicle storage battery;
5) and when the voltage of the vehicle storage battery is lower than a second set threshold value, judging as a fault and giving an alarm.
Further, the energy storage module is a lithium ion battery.
Further, the switching device is a relay.
Further, in step 3), when the vehicle battery voltage is higher than a first set threshold, the controller enters a sleep state.
The invention has the beneficial effects that:
the scheme of the invention is characterized in that an energy storage unit which is specially used for starting a vehicle when the storage battery is in power shortage is added; when starting at every turn, detect vehicle battery electric quantity by the controller, the controller triggers the relay and inserts starting circuit with energy storage unit when the electric quantity is low, for starting the vehicle and providing the electric energy, this energy storage unit is in real time charged by vehicle battery, can not be qualified for the next round of competitions the condition of insufficient voltage, has avoided the problem that vehicle storage battery insufficient voltage can't start. Further just add a one-way conduction component, prevent when the storage battery electric quantity is low, the energy storage unit is backward for storage battery charging and lead to the energy storage unit insufficient voltage. Furthermore, the energy storage unit adopts a lithium battery, so that the volume of the emergency power supply device is reduced, the electric quantity of the lithium battery can be kept for a long time, and the influence of frequent charging on the capacity and the service life of the lithium battery is small.
The control method of the vehicle emergency power supply device also detects the electric quantity of the vehicle storage battery again after the emergency energy storage unit is disconnected, and if the electric quantity does not reach the expected electric quantity, the low-voltage system is considered to be in fault, the battery cannot be charged, and an alarm is given.
Drawings
FIG. 1 is a schematic circuit diagram of an emergency power supply;
fig. 2 is a control flow chart of an emergency power supply device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The emergency power supply device shown in fig. 1 comprises a controller 1, a lithium battery 2, a diode 3 and a relay 4, wherein K1 can be a linkage switch of a vehicle ignition or starting switch or a normally open contact of the ignition or starting switch; the controller 1 comprises an ignition detection pin 11, a storage battery electric quantity detection pin 12 and an output pin 13. The negative electrode of the vehicle storage battery is connected with the negative electrode of the lithium battery 2 of the emergency power supply device, the positive electrode of the vehicle storage battery is connected with the positive electrode of the lithium battery 2 of the emergency power supply device through a diode 3, and the negative electrode of the diode 3 is connected with the positive electrode of the lithium battery 2; ignition detection pin 11 of controller 1 passes through switch K1 connects the anodal of lithium cell 2, battery power detection pin 12 of controller 1 connects the anodal of vehicle battery, output pin 13 control of controller 1 is connected relay 4, the normally open contact of relay 4 with diode 3 is parallelly connected.
The device has the following characteristics:
1) the power supply module (lithium battery 2) of the emergency power supply device is isolated from the vehicle storage battery through a diode; the power supply module can be charged only by the storage battery at ordinary times, and the power supply module can not supply power to the outside, so that the loss of the power supply module is very small, and higher electric quantity can be kept.
2) The power supply module adopts a lithium ion battery, so that the power supply module has smaller volume and can store electric quantity for a longer time; when the voltage of the external storage battery is too low and the vehicle cannot be started, the power supply module supplies power to the outside to start the vehicle.
3) The power supply module can be correspondingly adjusted according to a voltage platform (12V or 24V) to meet the requirements of different voltage grades.
Fig. 2 shows a control flow chart of an emergency power supply device according to the present invention, which includes the following steps:
1) the ignition switch is started, the switch K1 is closed, the ignition detection pin 11 of the internal controller 1 of the emergency power supply device detects a high-side signal, and the emergency power supply device starts to work.
2) After the emergency power supply device starts to work, the voltage of the external storage battery is detected through the storage battery electric quantity detection pin 12 of the controller 1.
3) If the voltage of the external storage battery is detected to be higher than the set working threshold value, the external storage battery is normal, and the emergency power supply device controller enters a dormant state; if the voltage of the external storage battery is detected to be lower than the set working threshold value, the emergency power supply device can output a high-side signal through an output pin 13 of the controller 1, and the relay 4 controls the power supply loop to be conducted to supply power to the outside, so that the vehicle is started.
4) After the vehicle is started and waits for a set time, the controller 1 disconnects the relay 4 and disconnects the power supply module to supply power to the outside; and detecting the voltage of the storage battery again, and if the voltage is higher than the minimum electric quantity which the charged battery reaches after the set time, determining that the storage battery system is normal; if the voltage is lower than the corresponding set threshold value, the low-voltage system is considered to be in fault, the storage battery cannot be charged, and alarm prompt is carried out.
The emergency power supply device mainly comprises 4 parts of switch detection, voltage acquisition, power supply control and isolated power supply, and the device is awakened by judging the power-on intention through the switch detection; judging the state of an external storage battery through voltage acquisition; finally, realizing the starting of emergency power supply through power supply control; the isolated power supply ensures that the power supply module of the device is only charged and not discharged under the general condition, thereby ensuring the effective endurance of the power supply module.
Claims (5)
1. The emergency power supply device for the vehicle is characterized by comprising an energy storage module, a controller, a switching device and a diode; the controller detects a trigger signal for connecting a vehicle storage battery and a vehicle starting switch, and the controller is also connected with the switching device in a control mode; the energy storage module is connected with the switch device in series and then connected with the storage battery in parallel; the energy storage module is specially used for starting a vehicle when the storage battery is in power shortage, and does not supply power to the outside when the storage battery is in power shortage, and the energy storage module is charged by the vehicle storage battery in real time; the diode is connected in parallel with the switching device; the controller comprises an ignition detection pin (11), a storage battery electric quantity detection pin (12) and an output pin (13); the negative electrode of the vehicle storage battery is connected with the negative electrode of the energy storage module, the positive electrode of the vehicle storage battery is connected with the positive electrode of the energy storage module through a diode, and the negative electrode of the diode is connected with the positive electrode of the energy storage module; an ignition detection pin (11) of the controller is connected with the anode of the energy storage module through a linked switch linked with the vehicle starting switch, a storage battery electric quantity detection pin (12) of the controller is connected with the anode of the vehicle storage battery, and an output pin (13) of the controller is connected with the switch device in a control mode;
when a vehicle starting switch is started, a linked switch is closed, an ignition detection pin (11) of a controller detects a high-side signal, a vehicle emergency power supply device starts to work, and a storage battery electric quantity detection pin (12) of the controller detects the voltage of a vehicle storage battery; if the detected voltage of the vehicle storage battery is higher than the set working threshold value, the vehicle storage battery is normal, the emergency power supply device controller enters a dormant state, if the detected voltage of the vehicle storage battery is lower than the set working threshold value, the emergency power supply device can output a high-side signal through an output pin (13) of the controller, and the switching device controls a power supply loop to be conducted to enable the energy storage module to supply power to the outside, so that the vehicle is started.
2. The emergency power supply device for vehicle according to claim 1, wherein said energy storage module is a lithium ion battery.
3. A vehicle emergency power supply apparatus according to claim 2, wherein said switching device is a relay.
4. A vehicle emergency power supply apparatus according to claim 3, wherein said controller detects connection of said battery.
5. The emergency power supply device for vehicles according to claim 1, further comprising the steps of:
1) the controller controls the switching device to be switched off after a set time, and collects the voltage of the vehicle storage battery;
2) and when the voltage of the vehicle storage battery is lower than a second set threshold value, judging as a fault and giving an alarm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711038348.XA CN109728642B (en) | 2017-10-27 | 2017-10-27 | Vehicle emergency power supply device and control method |
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| CN201711038348.XA CN109728642B (en) | 2017-10-27 | 2017-10-27 | Vehicle emergency power supply device and control method |
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| CN109728642A CN109728642A (en) | 2019-05-07 |
| CN109728642B true CN109728642B (en) | 2021-06-11 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108288869A (en) * | 2018-04-09 | 2018-07-17 | 深圳市雅德电源科技股份有限公司 | Online emergency power supply control circuit and online emergency power supply |
| CN113438649B (en) * | 2021-06-07 | 2023-03-24 | 东风汽车集团股份有限公司 | Vehicle battery replacement design method based on remote monitoring terminal and remote monitoring terminal |
| WO2023039844A1 (en) * | 2021-09-17 | 2023-03-23 | 华为技术有限公司 | Vehicle starting method, power supply and vehicle |
| CN113922453A (en) * | 2021-10-14 | 2022-01-11 | 徐工消防安全装备有限公司 | Lithium battery system for aerial work platform and implementation method |
| CN114320703B (en) * | 2021-11-23 | 2024-02-20 | 深圳供电局有限公司 | Auxiliary ignition device for vehicle and ignition device for vehicle |
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| CN103321814A (en) * | 2013-06-09 | 2013-09-25 | 深圳市民展科技开发有限公司 | Emergency ignition device for vehicle |
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| CN103321814A (en) * | 2013-06-09 | 2013-09-25 | 深圳市民展科技开发有限公司 | Emergency ignition device for vehicle |
| CN205453193U (en) * | 2015-12-31 | 2016-08-10 | 惠州市卡儭酷科技有限公司 | Emergent starting drive of vehicle |
| CN105610222A (en) * | 2016-03-01 | 2016-05-25 | 中南民族大学 | Low-voltage emergency power supply circuit and emergency power supply method for battery unit |
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| CN109728642A (en) | 2019-05-07 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A vehicle emergency power supply device and control method Effective date of registration: 20220808 Granted publication date: 20210611 Pledgee: Xuchang Digital Supply Chain Management Service Co., Ltd. Pledgor: HENAN SENYUAN HEAVY INDUSTRY Co.,Ltd. Registration number: Y2022980012102 |
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Granted publication date: 20210611 Pledgee: Xuchang Digital Supply Chain Management Service Co.,Ltd. Pledgor: HENAN SENYUAN HEAVY INDUSTRY Co.,Ltd.|SENYUAN AUTOMOBILE Co.,Ltd.|Henan Senyuan Electric Vehicle Co.,Ltd. Registration number: Y2022980012102 |
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Denomination of invention: A vehicle emergency power supply device and control method Granted publication date: 20210611 Pledgee: Xuchang Investment Property Management Group Co.,Ltd. Pledgor: HENAN SENYUAN HEAVY INDUSTRY Co.,Ltd.|SENYUAN AUTOMOBILE Co.,Ltd.|Henan Senyuan Electric Vehicle Co.,Ltd. Registration number: Y2024980004565 |
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