CN211844095U

CN211844095U - Low-power consumption battery box fire monitoring and alarm device

Info

Publication number: CN211844095U
Application number: CN202020415637.8U
Authority: CN
Inventors: 亢平; 赵怡锋; 李明明; 张立磊
Original assignee: Yantai Chungway New Energy Technology Co Ltd
Current assignee: Yantai Chungway New Energy Technology Co Ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-11-03
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses a low-power consumption battery box fire monitoring and alarming device, which comprises a sensor module, a sensor awakening module, a sensor switch circuit module, a main control module, a power management module, a communication and alarming module and an enabling module; the sensor module is electrically connected with the sensor switch circuit module; the sensor switch circuit module is electrically connected with the main control module and the sensor awakening module; the main control module is also electrically connected with the sensor awakening module, the communication and alarm module, the power management module and the enabling module. The sensor module comprises a plurality of different sensors; the sensor awakening module is used for sending a control signal to the sensor switch circuit module according to a set period; the sensor switch circuit module controls to switch on or switch off a power supply loop of the sensor; the enabling module is used for setting the starting or the stopping of the low-power-consumption working mode. Therefore, the utility model discloses can select whether to get into the low-power consumption mode according to the vehicle condition, realize the fire monitoring to the battery box.

Description

Low-power consumption battery box fire monitoring and alarm device

Technical Field

The utility model relates to a vehicle-mounted battery field especially relates to a low-power consumption battery box fire monitoring and alarm device.

Background

Electric vehicles are increasingly popularized, and the safety of a battery box of the electric vehicle is guaranteed to be very important.

More and more battery box fire monitoring and alarm device are applied to the electronic commercial car field.

When the electric automobile is powered OFF, the power battery also has the risk of thermal runaway, and in order to constantly keep monitoring the fire risk of the battery box, the best scheme is that no matter the automobile is in a running state or a standing state, including when an ignition switch is in an OFF state, the battery box fire alarm device still can run software, and the fire detection function is maintained. However, since the battery box fire detection device is generally powered by the vehicle-mounted storage battery, and the battery box fire detection device has various sensors, the power consumption of some semiconductor-type sensors is large, and when the ignition switch is in the OFF state, the vehicle-mounted power battery cannot supply power to the vehicle-mounted storage battery, so that the online operation of the battery box fire detection device is maintained for a long time under the condition of depending on the power supply of the vehicle-mounted storage battery, the power shortage of the storage battery is easily caused, and the electric automobile cannot be started.

Therefore, there is a need in the art for a device that can maintain the battery box fire alarm device on-line for a long time, with sufficiently low power consumption, and without causing excessive impact on the battery.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a low-power consumption battery box fire monitoring and alarming device is provided.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a low-power-consumption battery box fire monitoring and alarming device comprises a sensor module, a sensor awakening module, a sensor switch circuit module, a main control module, a power management module, a communication and alarming module and an enabling module;

the sensor module is electrically connected with the sensor switch circuit module;

the sensor switch circuit module is electrically connected with the main control module and the sensor awakening module;

the main control module is also electrically connected with the sensor awakening module, the communication and alarm module, the power management module and the enabling module.

The sensor module comprises a plurality of different sensors for detecting the health state of the battery pack;

the sensor awakening module is used for sending a signal for controlling the on-off of a sensor power supply loop to the sensor switch circuit module according to a set period;

the sensor switch circuit module is used for switching on or switching off a power supply loop of the sensor according to the instruction of the main control module and the instruction of the sensor awakening module;

the enabling module is used for setting a low-power-consumption working mode to be started or stopped;

the power supply management module is electrically connected with an ignition switch of the electric automobile and used for detecting the working state of the automobile;

the communication and alarm module is used for communicating with a running computer of the vehicle and sending alarm information.

The device has a normal working mode, a silent working mode and a dormant working mode, wherein the silent working mode and the dormant working mode can be executed only on the premise of enabling the enabling module;

in the normal working mode, all the sensors normally operate and are in real-time communication connection with the ECU;

in the silent working mode, all sensors normally run but do not perform data communication with the ECU; switching to a normal working mode after detecting a fire alarm signal;

in the sleep mode of operation, all sensors are intermittently activated.

Compared with the prior art, the utility model discloses following technological effect has:

can selectively according to the vehicle state, get into the low-power consumption mode, under this mode, all sensor intermittence are started, detect battery box fire risk, can supervise the state when the vehicle stews for a long time and very big reduction the consumption again, when the vehicle only parks for a short time, the accessible enables the module and avoids the system to get into the low-power consumption mode to can carry out the fire monitoring of higher frequency to the battery box, ensure the safety of battery box.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Preferably, the system further comprises a human-computer interaction module for adjusting system parameters.

The technical scheme has the advantages that the intermittent working frequency under the low-power-consumption working mode can be set so as to adapt to different application scenes.

The working method of the device is as follows:

s1, starting the system, judging whether the low power consumption function is enabled, if so, executing a step S2, and enabling the system to enter a silent working mode; otherwise, executing step S4, and the system entering a normal operation mode;

s2, entering a silent working mode:

s2-1, judging whether a thermal runaway risk alarm signal exists or an ignition switch is in an ON state, if so, jumping to S4, and entering a normal working mode; otherwise, executing step S2-2;

s2-2, detecting whether the vehicle is in a charging state or in a thermal runaway risk detection state, if so, carrying out thermal runaway detection until the charging state is removed or the thermal runaway risk detection state is removed, and then executing a step S2-3;

s2-3, detecting whether the ignition switch is in an OFF state, and the vehicle is not in a charging state, and the sensor does not detect a thermal runaway risk alarm signal, executing a step S3;

s3, entering a sleep working mode:

s3-1, calculating and setting an alarm threshold value of each sensor by taking preset sleep time T and sensor data in the previous T time as parameters;

s3-2, setting AD comparison interruption corresponding to each sensor according to the alarm threshold value of each sensor;

s3-3, setting timer awakening and intermittent working duration according to the specified power consumption, the power consumption during dormancy and the power consumption during intermittent working of the electric automobile;

s3-4, turning off the sensor through the sensor switch circuit module, and entering a dormant state;

s3-5, continuously monitoring the awakening event,

if the timer is awakened, setting the system working state as a thermal runaway risk detection state, and jumping to the step S2-2;

if the ignition switch is ON for awakening, executing step S4, and the system entering a normal operating mode;

if the AD comparison is interrupted and wakened up, step S2 is executed, and the system enters the silent operation mode.

S4, entering a normal working mode,

s4-1, all the sensor modules run at full power, and the communication and alarm module is in real-time communication connection with the ECU;

s4-2, detecting whether the ignition switch is in an OFF state, if so, executing a step S2, enabling the system to enter a silent working mode, otherwise, returning to the step S4-1.

Drawings

Fig. 1 is a functional block diagram of the fire monitoring and alarming device of the low-power battery box of the present invention;

in the drawings, the parts names represented by the respective reference numerals are listed as follows:

1. a sensor module; 2. a sensor switch circuit module; 3. a sensor wake-up module; 4. a main control module; 5. a power management module; 6. a communication and alarm module; 7. an enabling module; 8. a vehicle-mounted computer; 9. and an ignition switch.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Please refer to fig. 1, which is a schematic structural diagram of a fire monitoring and alarming device of a low-power battery box according to the present invention. A low-power consumption battery box fire monitoring and alarming device comprises a sensor module 1, a sensor switch circuit module 2, a main control module 3, a sensor awakening module 4, a power management module 5, a communication and alarming module and an alarming module 6;

the sensor module 1 is electrically connected with the sensor switch circuit module 2;

the sensor switch circuit module 2 is electrically connected with the main control module 3 and the sensor awakening module 4;

the main control module 3 is also electrically connected with a sensor awakening module 4, a communication and alarm module 6, a power management module 5 and an enabling module 7.

The sensor module 1 includes a plurality of specific sensors, such as the sensors 1 to n shown in fig. 1, for detecting physical parameters, such as voltage, current, temperature, etc., that can characterize the state of health of the battery pack;

the sensor awakening module 4 is used for sending a signal for controlling the on-off of a sensor power supply loop to the sensor switch circuit module 2 according to a set period;

the sensor switch circuit module 2 switches on or off a power supply loop of the sensor according to the instruction of the main control module 3 and the instruction of the sensor awakening module 4;

the enabling module 7 is used for setting a low-power-consumption working mode to be started or stopped;

the power management module 5 is electrically connected with an ignition switch 9 of the electric automobile and used for detecting the working state of the automobile;

the communication and alarm module 6 is used for communicating with a running computer 8 of the vehicle.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-power-consumption battery box fire monitoring and alarming device is characterized by comprising a sensor module, a sensor awakening module, a sensor switch circuit module, a main control module, a power management module, a communication and alarming module and an enabling module;

the main control module is also electrically connected with the sensor awakening module, the communication and alarm module, the power management module and the enabling module;

2. The fire monitoring and warning device for the low-power-consumption battery box as claimed in claim 1, further comprising a human-computer interaction module for adjusting system parameters.