CN221125813U - Control magnetic latching relay device - Google Patents
Control magnetic latching relay device Download PDFInfo
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- CN221125813U CN221125813U CN202323128934.7U CN202323128934U CN221125813U CN 221125813 U CN221125813 U CN 221125813U CN 202323128934 U CN202323128934 U CN 202323128934U CN 221125813 U CN221125813 U CN 221125813U
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- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 101150085905 DCP2 gene Proteins 0.000 description 1
- 101100031494 Schizosaccharomyces pombe (strain 972 / ATCC 24843) psu1 gene Proteins 0.000 description 1
- 101100422754 Schizosaccharomyces pombe (strain 972 / ATCC 24843) sui1 gene Proteins 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a magnetic latching relay control device, which comprises a power battery, wherein an auxiliary power supply device is arranged to directly supply power to an auxiliary microcontroller, so that the auxiliary microcontroller is always in a low-power consumption mode, when the auxiliary microcontroller monitors that the voltage at the rear end of the power battery is unchanged and is more than 90% of the total system voltage, the auxiliary microcontroller judges that the magnetic latching relay is in an abnormal state, the auxiliary microcontroller controls a magnetic latching driving chip to perform corresponding actions, when the voltage at the rear end of the power battery is detected to be unchanged again after the instruction is finished and is more than 90% of the total system voltage, the detection is repeated for three times, the damage and the adhesion of the magnetic latching relay are judged after the three conditions are consistent, and a warning signal is sent to remind a user, so that the battery system can be in a safe state under the condition that the main microcontroller is abnormal, and the auxiliary microcontroller can still be used for controlling the magnetic latching relay.
Description
Technical Field
The utility model relates to the technical field of battery management systems, in particular to a control magnetic latching relay device.
Background
The magnetic latching relay is a novel relay developed in recent years, plays a role in switching on and switching off a circuit as other relays, and is different in that the magnetic latching relay is switched on and off by means of the action of an internal permanent magnet, and can be controlled to be switched on and off only by applying positive/negative pulses for a certain time to a coil, and voltage is not required to be applied to the coil all the time. Compared with other relays, the magnetic latching relay has the advantages of power saving and long service life, but has the defects that the contact state cannot be directly obtained, and the magnetic latching relay can enter an unexpected state under the conditions of vibration, impact and the like.
The current BMS control magnetic latching relay, under BMS shutdown condition, unable control magnetic latching relay's state, if the magnetic latching relay breaks down (unusual closed) under certain extreme conditions, can cause the battery package rear end to be electrified all the time, causes the battery to put excessively, brings the potential safety hazard, has caused certain inconvenience for the user.
Disclosure of utility model
The present utility model is directed to a control magnetic latching relay device to solve the above-mentioned problems.
The technical problems to be solved by the utility model can be realized by the following technical scheme:
The utility model provides a control magnetic latching relay device, includes power battery, main power supply device, auxiliary power supply device, main microcontroller, auxiliary microcontroller, first or gate, second or gate, magnetic latching drive chip and magnetic latching relay, power battery electric connection has main power supply device, main power supply device electric connection has main microcontroller, main microcontroller electric connection has first or gate and second or gate respectively, power battery electric connection has auxiliary power supply device, auxiliary power supply device electric connection has auxiliary microcontroller, auxiliary microcontroller electric connection has first or gate and second or gate respectively, auxiliary microcontroller electric connection has power battery, first or gate and second or gate all electric connection have magnetic latching drive chip, magnetic latching drive chip electric connection has magnetic latching relay.
As a further scheme of the utility model: the key switch is arranged on the main power supply device and used for controlling the starting of the main power supply device, and the main power supply device provides direct current power for the main microcontroller.
As a further scheme of the utility model: the auxiliary power supply device and the main power supply device form a parallel circuit therebetween, and the auxiliary power supply device provides direct current power for the auxiliary microcontroller so that the auxiliary microcontroller always works in a low-power consumption mode.
As a further scheme of the utility model: the main microcontroller and the auxiliary microcontroller output unlocking signals and locking signals to control the magnetic latching driving chip, and the auxiliary microcontroller is used for detecting communication of the main microcontroller.
As a further scheme of the utility model: the magnetic latching driving chip is used for receiving signals output by the main microcontroller and the auxiliary microcontroller and controlling the normally open contact of the magnetic latching relay to be closed or opened.
As a further scheme of the utility model: the magnetic latching relay is electrically connected with a power battery, and the magnetic latching relay is used for controlling the closing and opening of a power battery circuit.
The utility model has the beneficial effects that:
According to the utility model, the auxiliary microcontroller is directly powered through the auxiliary power supply device, so that the auxiliary microcontroller is always in a low-power consumption mode, when the auxiliary microcontroller monitors that the voltage at the rear end of the power battery is unchanged and is more than 90% of the total voltage of the system, the auxiliary microcontroller judges that the magnetic latching relay is in an abnormal state, the auxiliary microcontroller controls the magnetic latching driving chip to perform corresponding actions, when the command is finished, the voltage at the rear end of the power battery is detected to be unchanged again and is more than 90% of the total voltage of the system, the detection is repeated for three times, the damage of the magnetic latching relay is judged after the three conditions are consistent, the adhesion is carried out, and a warning signal is sent to remind a user, so that the auxiliary microcontroller can be in a safe state under the condition that the main microcontroller is abnormal (power supply abnormality, reset and dead halt), and the auxiliary microcontroller can still be used for controlling the magnetic latching relay, thereby ensuring the safety of a battery system.
Drawings
The utility model is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the circuit principle of the present utility model;
FIG. 2 is a schematic diagram of the auxiliary microcontroller workflow in the present utility model.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1-2, a magnetic latching relay device is controlled, including a power battery, a main power supply device, an auxiliary power supply device, a main microcontroller, an auxiliary microcontroller, a first or gate, a second or gate, a magnetic latching driving chip and a magnetic latching relay, the power battery is electrically connected with the main power supply device, the main power supply device is PSU1 in fig. 1, the main power supply device is electrically connected with the main microcontroller, the main microcontroller is U1 in fig. 1, a key switch is arranged on the main power supply device and is used for controlling the start of the main power supply device, the main power supply device provides a direct current power supply for the main microcontroller, the main microcontroller is respectively electrically connected with a first or gate and a second or gate, the first or gate is U3A in fig. 1, the second or gate is U3B in fig. 1, the first or gate is used for receiving an unlocking signal, the second or gate is used for receiving the locking signal, the power battery is electrically connected with the auxiliary power supply device, the auxiliary power supply device is PSU2 in fig. 1, the auxiliary power supply device is electrically connected with the auxiliary microcontroller, the auxiliary microcontroller is an auxiliary microcontroller, the auxiliary microcontroller is a power microcontroller, the power supply device is a circuit between the main power supply device and the main power supply device is provided with the first or gate and the second or gate, the first or gate is used for receiving the unlocking signal, the first or gate is used for receiving the locking signal, the first or second gate is used for receiving the locking signal, the power supply is used for the main microcontroller, and the first or the second gate is used for the driving chip, and the main microcontroller, and the second gate is electrically connected with the auxiliary power chip, and has a first or the power switch, and has a function and a function. The magnetic latching driving chip is electrically connected with a magnetic latching relay, the magnetic latching driving chip is used for receiving signals output by the main microcontroller and the auxiliary microcontroller, controlling the normally open contact of the magnetic latching relay to be closed or opened, controlling the generation of forward and reverse pulses after the magnetic latching driving chip receives the signals, controlling the normally open contact of the magnetic latching relay to be closed or opened, electrically connecting the magnetic latching relay with a power battery, controlling the closing and opening of a power battery circuit through the magnetic latching relay, supplying power to the main microcontroller after starting, controlling the power battery power transmission circuit through the main microcontroller, directly supplying power to the auxiliary microcontroller by the auxiliary power supply device, always in a low-power working state, monitoring the voltage of the power battery, monitoring the abnormal occurrence of the voltage of the magnetic latching relay and the voltage of the power battery by the auxiliary microcontroller when the main microcontroller cannot control the magnetic latching relay to work, sending signals, outputting control signals through the first or gate and the second or gate, and controlling the magnetic latching driving chip through the magnetic latching driving chip.
The specific working flow of the auxiliary microcontroller is as follows: the auxiliary microcontroller checks the communication condition between the auxiliary microcontroller and the main microcontroller in real time at the frequency of 100 mm, when the communication exists, the auxiliary microcontroller keeps unchanged frequency and continues to check, when the communication does not exist, the auxiliary microcontroller detects the voltage at the rear end of the power battery, if the voltage at the rear end of the power battery is falling, the auxiliary microcontroller still keeps unchanged frequency and continues to check, when the voltage at the rear end of the power battery is not changed and is more than 90% of the total system voltage, the auxiliary microcontroller judges that the magnetic latching relay is not disconnected, the auxiliary microcontroller outputs an unlocking signal to control the magnetic latching relay to disconnect, then the voltage at the rear end of the power battery is detected again, the voltage is reduced, the magnetic latching relay is disconnected, the auxiliary microcontroller keeps unchanged frequency and continues to check, if the voltage at the rear end of the power battery is still unchanged and is more than 90% of the total system voltage at the moment, the detection is repeated three times, the magnetic latching relay is judged to be damaged and adhered after the three conditions are consistent, and a warning signal is sent to remind a user.
The working principle of the utility model is as follows: under normal state, the main power supply device is started by the key and then supplies power to the main microcontroller, the normally open contact of the magnetic latching relay is controlled by the main microcontroller to be closed or opened, the auxiliary power supply device directly supplies power to the auxiliary microcontroller, so that the auxiliary microcontroller is always in a low power consumption mode, the auxiliary microcontroller monitors whether the main microcontroller has communication and power battery voltage or not at all times, when no communication exists, the auxiliary microcontroller detects the voltage at the rear end of the power battery, if the voltage at the rear end of the power battery is decreasing, the magnetic latching relay is indicated to be disconnected, the auxiliary microcontroller continues to monitor, when the voltage at the rear end of the power battery is detected to be unchanged and is more than 90% of the total voltage of the system, the auxiliary microcontroller outputs an unlocking signal to control the magnetic latching relay to be disconnected, then the voltage at the rear end of the power battery is detected again, the magnetic latching relay is disconnected, the auxiliary microcontroller keeps detecting, if the voltage at the rear end of the power battery is still unchanged and is more than 90% of the total voltage of the system, the power battery is repeatedly detected for three times, and after the three conditions are consistent, the magnetic latching relay is judged to be adhered, and a warning signal is sent to remind a user.
The foregoing describes one embodiment of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.
Claims (6)
1. A control magnetic latching relay device comprises a power battery, a main power supply device, an auxiliary power supply device, a main microcontroller, an auxiliary microcontroller, a first OR gate, a second OR gate, a magnetic latching driving chip and a magnetic latching relay; the method is characterized in that:
The power battery is electrically connected with a main power supply device, the main power supply device is electrically connected with a main microcontroller, the main microcontroller is electrically connected with a first or gate and a second or gate respectively, the power battery is electrically connected with an auxiliary power supply device, the auxiliary power supply device is electrically connected with an auxiliary microcontroller, the auxiliary microcontroller is electrically connected with the first or gate and the second or gate respectively, the auxiliary microcontroller is electrically connected with a power battery, the first or gate and the second or gate are both electrically connected with a magnetic holding driving chip, and the magnetic holding driving chip is electrically connected with a magnetic holding relay.
2. The magnetic latching control relay device according to claim 1, wherein the main power supply device is provided with a key switch for controlling the start of the main power supply device, and the main power supply device supplies dc power to the main microcontroller.
3. The device of claim 1, wherein a parallel circuit is formed between the auxiliary power supply and the main power supply, and the auxiliary power supply provides dc power to the auxiliary microcontroller to operate the auxiliary microcontroller in a low power mode.
4. The controlled magnetic latching relay apparatus according to claim 1, wherein the main microcontroller outputs an unlock signal and a lock signal to the auxiliary microcontroller for detecting communication of the main microcontroller.
5. The device for controlling a magnetic latching relay according to claim 1, wherein the magnetic latching driving chip is used for receiving signals output by the main microcontroller and the auxiliary microcontroller and controlling the normally open contact of the magnetic latching relay to be closed or opened.
6. The device according to claim 1, wherein the magnetic latching relay is electrically connected to a power battery, and the magnetic latching relay is used for controlling the power battery to be turned on or off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323128934.7U CN221125813U (en) | 2023-11-20 | 2023-11-20 | Control magnetic latching relay device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323128934.7U CN221125813U (en) | 2023-11-20 | 2023-11-20 | Control magnetic latching relay device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221125813U true CN221125813U (en) | 2024-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323128934.7U Active CN221125813U (en) | 2023-11-20 | 2023-11-20 | Control magnetic latching relay device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221125813U (en) |
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2023
- 2023-11-20 CN CN202323128934.7U patent/CN221125813U/en active Active
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