CN217994355U - Power-on and power-off control device of low-voltage storage battery - Google Patents
Power-on and power-off control device of low-voltage storage battery Download PDFInfo
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- CN217994355U CN217994355U CN202222408934.1U CN202222408934U CN217994355U CN 217994355 U CN217994355 U CN 217994355U CN 202222408934 U CN202222408934 U CN 202222408934U CN 217994355 U CN217994355 U CN 217994355U
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Abstract
The utility model relates to a power-on and power-off control device of a low-voltage battery, belonging to the technical field of electric control of a whole vehicle, comprising a shell, wherein a low-voltage battery unit, a low-voltage battery controller, a first relay and a second relay are arranged in the shell; be provided with first interface mounting hole, second interface mounting hole, third interface mounting hole, first switch hole and second switch hole on the shell, be provided with first electric interface in the first interface mounting hole, be provided with the second electric interface in the second interface mounting hole, be provided with the third electric interface in the third interface mounting hole, be provided with the key switch in the first switch hole, the downthehole power master switch that is provided with of second switch. The utility model discloses a design the relation of connection of first relay, second relay, key switch, power master switch and low pressure storage battery controller, realize the control of electricity about the intelligence, and through rational distribution, reduce unnecessary quiescent current, improve the security of low pressure storage battery and whole car.
Description
Technical Field
The utility model belongs to the technical field of whole car is automatically controlled, concretely relates to last controlling means of unloading of low pressure storage battery.
Background
The low-voltage battery of the whole vehicle is used for starting the engine and supplying power to the low-voltage power utilization equipment of the whole vehicle when the generator is insufficient in power generation. In the vehicle use, owing to have the driver often to forget to close power master switch, the vehicle is placed for a long time and not standardize and connect the electric scheduling problem, the low-voltage storage battery that leads to appears the insufficient current problem, has unnecessary quiescent current even, increases the parking short circuit risk, and this is prior art's weak point.
In view of this, the utility model provides a power on/off control device for a low-voltage battery; it is very necessary to solve the above-mentioned defects existing in the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to have the defect that insufficient voltage phenomenon appears in the low pressure storage battery among the prior art, provide the upper and lower electric control device who designs a low pressure storage battery to solve the problem that exists among the prior art.
In order to achieve the above purpose, the utility model provides the following technical scheme:
a power-on and power-off control device of a low-voltage battery comprises a shell, wherein a low-voltage battery unit, a low-voltage battery controller, a first relay and a second relay are arranged in the shell; the shell is provided with a first interface mounting hole, a second interface mounting hole, a third interface mounting hole, a first switch hole and a second switch hole, the first interface mounting hole is internally provided with a first electric interface, the second interface mounting hole is internally provided with a second electric interface, the third interface mounting hole is internally provided with a third electric interface, the first switch hole is internally provided with a key switch, and the second switch hole is internally provided with a power main switch;
the negative electrode end of the low-voltage battery unit is grounded, the positive electrode end of the low-voltage battery unit is connected to the first end of the low-voltage battery controller, and the positive electrode end of the low-voltage battery unit is also connected to the first electric interface; the first end of the key switch is connected to the second end of the low-voltage battery controller, and the second end of the key switch is connected to the third end of the low-voltage battery controller; the first end of the power supply main switch is connected to the second end of the low-voltage battery controller, and the second end of the power supply main switch is connected to the fourth end of the low-voltage battery controller; the first end of the first relay is connected to the positive pole end of the low-voltage battery unit, the second end of the first relay is connected to the low-voltage battery controller, and the third end of the first relay is connected to the second electrical interface; the first end of the second relay is connected to the positive pole end of the low-voltage battery unit, the second end of the second relay is connected to the low-voltage battery controller, the third end of the second relay is connected to the third end of the power main switch, and the fourth end of the power main switch is connected to the third electric interface.
Further, the first end of the coil of first relay is connected to the fifth end of low-voltage battery controller, the second end of the coil of first relay is connected to the sixth end of low-voltage battery controller, one side parallel connection of the coil of first relay has first diode, the positive pole of first diode is connected to the fifth end of low-voltage battery controller, the negative pole of first diode is connected to the sixth end of low-voltage battery controller, set up freewheeling diode, prevent that the outage from damaging the coil of first relay or puncturing the low-voltage battery controller that is connected with it because the counter potential is too big in the twinkling of an eye.
Further, the first end of the coil of the second relay is connected to the seventh end of the low-voltage battery controller, the second end of the coil of the second relay is connected to the eighth end of the low-voltage battery controller, one side of the coil of the second relay is connected with a second diode in parallel, the anode of the second diode is connected to the seventh end of the low-voltage battery controller, the cathode of the second diode is connected to the eighth end of the low-voltage battery controller, a freewheeling diode is arranged, and the phenomenon that the coil of the second relay is damaged or the low-voltage battery controller connected with the second relay is broken down due to too large counter potential in the moment of power failure is prevented.
Further, still include the storage battery sensor, the storage battery sensor is installed on the earth connection of the negative pole end ground connection of low pressure storage battery unit, and the operating parameter such as the voltage of real-time supervision low pressure storage battery unit, electric current and residual capacity to send each item operating parameter of the low pressure storage battery of monitoring for the low pressure storage battery controller, whether normal operating is judged according to received operating parameter to the low pressure storage battery controller to the low pressure storage battery unit, and the driver of being convenient for in time discovers the unusual of low pressure storage battery unit.
Furthermore, the low-voltage battery controller comprises a main control unit, a sleep unit, a wake-up unit, a storage unit, an alarm unit and a communication unit, wherein the sleep unit, the wake-up unit, the storage unit, the alarm unit and the communication unit are all connected to the main control unit.
Furthermore, the main control unit is connected to the remote terminal through the communication unit, so that a driver can conveniently and remotely know the specific running state of the low-voltage battery unit.
Further, the storage battery sensor is connected to the main control unit through a CAN bus.
The beneficial effects of the utility model reside in that, the utility model discloses a design first relay, second relay, key switch, power master switch and low-voltage storage battery controller's relation of connection realizes the control of intelligent power-on and power-off, and through the rational distribution, reduces unnecessary quiescent current, improves the security of low-voltage storage battery and whole car. Additionally, the utility model discloses a low pressure storage battery controller still possesses dormancy function and awakens the function up, detects the storage battery electric quantity when awakening up, when low pressure storage battery controller predicts the storage battery and is about to the insufficient voltage, reports an emergency and asks for help or increased vigilance remote terminal through the communication unit propelling movement, reminds the driver in time to charge.
Furthermore, the utility model relates to a principle is reliable, and simple structure has very extensive application prospect.
Therefore, compared with the prior art, the utility model has the outstanding substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Drawings
Fig. 1 is a schematic structural view of the power-on and power-off control device.
Fig. 2 is a schematic diagram of the relationship between the power-on and power-off control devices.
1 is the shell, and 2 is low-voltage battery unit, and BMS is low-voltage battery controller, and K1 is first relay, and K2 is the second relay, and 3 is the storage battery sensor, and 4 is first electrical interface, and 5 are the second electrical interface, and 6 are the third electrical interface, and S1 is the key switch, and S2 is power master switch.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of specific examples, which are illustrative of the present invention and are not limited to the following embodiments.
As shown in fig. 1 and 2, the utility model provides a power-on and power-off control device of a low-voltage battery, which comprises a shell 1, wherein a low-voltage battery unit 2, a low-voltage battery controller BMS, a first relay K1, a second relay K2 and a battery sensor 3 are arranged in the shell 1; the shell 1 is provided with a first interface mounting hole, a second interface mounting hole, a third interface mounting hole, a first switch hole and a second switch hole, the first interface mounting hole is internally provided with a first electric interface 4, the second interface mounting hole is internally provided with a second electric interface 5, the third interface mounting hole is internally provided with a third electric interface 6, the first switch hole is internally provided with a key switch S1, and the second switch hole is internally provided with a power master switch S2.
Specifically, the negative end of the low-voltage battery unit 2 is grounded, the positive end of the low-voltage battery unit 2 is connected to the first end of the low-voltage battery controller BMS, the positive end of the low-voltage battery unit 2 is also connected to the first power utilization interface 4, and the battery sensor 3 is mounted on a grounded line of the negative end of the low-voltage battery unit 2; the first end of the key switch S1 is connected to the second end of the low-voltage battery controller BMS, and the second end of the key switch S1 is connected to the third end of the low-voltage battery controller BMS; the first end of the power main switch S2 is connected to the second end of the low-voltage battery controller BMS, the second end of the power main switch S2 is connected to the fourth end of the low-voltage battery controller BMS, and the low-voltage battery controller BMS detects the on-off states of the key switch S1 and the power main switch S2; a first end of the first relay K1 is connected to the positive pole end of the low-voltage battery unit 2, a second end of the first relay K1 is connected to the low-voltage battery controller BMS, and a third end of the first relay K1 is connected to the second electrical interface 5; the first end of the second relay K2 is connected to the positive pole end of the low-voltage battery unit 2, the second end of the second relay K2 is connected to the low-voltage battery controller BMS, the third end of the second relay K2 is connected to the third end of the power main switch S2, and the fourth end of the power main switch S2 is connected to the third electric interface.
Specifically, the first end of first relay K1's coil is connected to the fifth end of low pressure battery controller BMS, the second end of first relay K1's coil is connected to the sixth end of low pressure battery controller BMS, one side of first relay K1's coil is parallelly connected with first diode, the positive pole of first diode is connected to the fifth end of low pressure battery controller BMS, the negative pole of first diode is connected to the sixth end of low pressure battery controller BMS, set up freewheeling diode, prevent that the outage from damaging the coil of first relay or puncturing the low pressure battery controller rather than being connected because the back emf is too big in the twinkling of an eye. The first end of second relay K2's coil is connected to the seventh end of low pressure battery controller BMS, the second end of second relay K2's coil is connected to the eighth end of low pressure battery controller BMS, one side parallel connection of second relay K2's coil has the second diode, the positive pole of second diode is connected to the seventh end of low pressure battery controller BMS, the negative pole of second diode is connected to the eighth end of low pressure battery controller BMS, set up freewheeling diode, prevent that the outage is in the twinkling of an eye because the back emf is too big and damage the coil of second relay or puncture the low pressure battery controller rather than being connected.
The BMS comprises a main control unit, a dormancy unit, a wake-up unit, a storage unit, an alarm unit and a communication unit, wherein the dormancy unit, the wake-up unit, the storage unit, the alarm unit and the communication unit are all connected to the main control unit, and the main control unit is connected to a remote terminal through the communication unit, so that a driver can conveniently know the specific running state of the low-voltage battery unit remotely; and the storage battery sensor passes through CAN bus connection to the main control unit, storage battery sensor 3 monitors the operating parameters such as voltage, electric current and residual capacity of low pressure storage battery unit in real time, and send each item operating parameter of low pressure storage battery monitored to the low pressure storage battery controller, whether low pressure storage battery controller BMS judges low pressure storage battery unit normal operating according to the operating parameter that receives, if there is the anomaly (storage battery residual capacity is less than when the residual capacity threshold value), then alarm unit generates alarm information, and will report an emergency and ask for help or increased vigilance information and send remote terminal, the driver of being convenient for in time discovers the anomaly of low pressure storage battery unit. Meanwhile, the low-voltage battery controller BMS also sends the received operation parameters to a storage unit for storage, so that the subsequent calling is facilitated.
When the battery pack is used, the power main switch S2 is switched off, and the low-voltage battery controller BMS controls the coil of the second relay K2 to be powered off, so that the third electrical interface 6 is powered off; when the key switch S1 is switched off for a first preset time and the residual electric quantity of the low-voltage battery unit 2 is smaller than a first preset value, the second relay K2 is controlled to be switched off, and then the third electrical interface 6 is switched off; when the power main switch S2 is switched off, if the low-voltage battery controller BMS receives a signal of recombining the power main switch, the second relay K2 is controlled to be electrified, and then the third electric interface 6 is electrified; when the power master switch S2 is forgotten to be turned off, the low-voltage battery controller BMS receives a signal of the key switch S1, controls the second relay K2 to be electrified, and further powers on the third electrical interface 6.
When the low-voltage battery controller BMS is used, after the power supply main switch S2 is switched off for a second preset time, the first relay K1 is controlled to be switched off by the low-voltage battery controller BMS, and then the second electrical interface 5 is switched off; after the key switch S1 is switched off for a third preset time, no matter what state the power main switch S2 is in, the low-voltage battery controller BMS controls the first relay K1 to be switched off, and then the second electrical interface 5 is switched off; when the power main switch S2 is switched off, if the low-voltage battery controller BMS receives a signal of recombining the power main switch S2, the first relay K1 is controlled to be electrified, and then the second electrical interface 5 is electrified; when the power master switch S2 is forgotten to be turned off, the low-voltage battery controller BMS receives a signal of a key switch, controls the first relay K1 to be electrified, and then powers on the second electrical interface 5.
The low-voltage battery controller BMS further comprises a self-checking unit, the self-checking unit is connected with the main control unit and used for detecting the quiescent current of the low-voltage battery controller BMS, and when the detected quiescent current exceeds a quiescent current threshold value, the dormancy unit is started to enable the low-voltage battery controller BMS to enter a dormant state. In addition, after the power main switch S2 is disconnected for a fourth preset time, a sleep unit is started to enable the low-voltage battery controller BMS to enter a sleep state; meanwhile, after the key switch S1 is turned off for a fifth preset time, the sleep unit is started to make the low-voltage battery controller BMS enter a sleep state regardless of the state of the power master switch S2.
When the main power switch S2 is in a disconnected state and the low-voltage battery controller BMS receives a signal of recombining the main power switch S2, the low-voltage battery controller BMS in a dormant state is awakened by starting the awakening unit; under the state that forgets to cut off power master switch S2, low pressure controller BMS receives the signal of combination key switch S1, starts the low pressure battery controller BMS that awakens up the unit and will be in the dormancy state and awaken up.
The above disclosure is only for the preferred embodiments of the present invention, but the present invention is not limited thereto, and any person skilled in the art can think of the inventive changes, and several improvements and decorations made without departing from the principle of the present invention should fall within the protection scope of the present invention.
Claims (7)
1. A power-on and power-off control device of a low-voltage battery is characterized by comprising a shell, wherein a low-voltage battery unit, a low-voltage battery controller, a first relay and a second relay are arranged in the shell; the shell is provided with a first interface mounting hole, a second interface mounting hole, a third interface mounting hole, a first switch hole and a second switch hole, the first interface mounting hole is internally provided with a first electric interface, the second interface mounting hole is internally provided with a second electric interface, the third interface mounting hole is internally provided with a third electric interface, the first switch hole is internally provided with a key switch, and the second switch hole is internally provided with a power main switch;
the negative electrode end of the low-voltage battery unit is grounded, the positive electrode end of the low-voltage battery unit is connected to the first end of the low-voltage battery controller, and the positive electrode end of the low-voltage battery unit is also connected to the first electric interface; the first end of the key switch is connected to the second end of the low-voltage battery controller, and the second end of the key switch is connected to the third end of the low-voltage battery controller; the first end of the power main switch is connected to the second end of the low-voltage battery controller, and the second end of the power main switch is connected to the fourth end of the low-voltage battery controller; the first end of the first relay is connected to the positive pole end of the low-voltage battery unit, the second end of the first relay is connected to the low-voltage battery controller, and the third end of the first relay is connected to the second electrical interface; the first end of the second relay is connected to the positive pole end of the low-voltage battery unit, the second end of the second relay is connected to the low-voltage battery controller, the third end of the second relay is connected to the third end of the power main switch, and the fourth end of the power main switch is connected to the third electric interface.
2. The power-on and power-off control device for the low-voltage battery as claimed in claim 1, wherein a first end of a coil of the first relay is connected to a fifth end of the low-voltage battery controller, a second end of the coil of the first relay is connected to a sixth end of the low-voltage battery controller, a first diode is connected in parallel to one side of the coil of the first relay, an anode of the first diode is connected to the fifth end of the low-voltage battery controller, and a cathode of the first diode is connected to the sixth end of the low-voltage battery controller.
3. The power on/off control device for the low-voltage battery as claimed in claim 1, wherein a first end of a coil of the second relay is connected to a seventh end of the low-voltage battery controller, a second end of the coil of the second relay is connected to an eighth end of the low-voltage battery controller, a second diode is connected in parallel to one side of the coil of the second relay, an anode of the second diode is connected to the seventh end of the low-voltage battery controller, and a cathode of the second diode is connected to the eighth end of the low-voltage battery controller.
4. The power on/off control device for the low-voltage battery as claimed in claim 1, further comprising a battery sensor mounted on a ground line connecting the negative terminal of the low-voltage battery unit to ground.
5. The power-on and power-off control device of the low-voltage battery as claimed in claim 4, wherein the low-voltage battery controller comprises a main control unit, a sleep unit, a wake-up unit, a storage unit, an alarm unit and a communication unit, and the sleep unit, the wake-up unit, the storage unit, the alarm unit and the communication unit are all connected to the main control unit.
6. The power on/off control device for the low-voltage battery as claimed in claim 5, wherein the main control unit is connected to the remote terminal through the communication unit.
7. The power on/off control device for the low-voltage battery as claimed in claim 5, wherein the battery sensor is connected to the main control unit through a CAN bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222408934.1U CN217994355U (en) | 2022-09-09 | 2022-09-09 | Power-on and power-off control device of low-voltage storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222408934.1U CN217994355U (en) | 2022-09-09 | 2022-09-09 | Power-on and power-off control device of low-voltage storage battery |
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| Publication Number | Publication Date |
|---|---|
| CN217994355U true CN217994355U (en) | 2022-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222408934.1U Active CN217994355U (en) | 2022-09-09 | 2022-09-09 | Power-on and power-off control device of low-voltage storage battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217994355U (en) |
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2022
- 2022-09-09 CN CN202222408934.1U patent/CN217994355U/en active Active
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