Battery monitoring module automatic dormancy circuit based on controllable battery pack

Abstract

The utility model discloses a battery monitoring module automatic dormancy circuit based on a controllable battery pack, relates to the technical field of electric vehicle control, and solves the problems of high energy consumption and short service life due to the fact that a battery monitoring module is in a working state in real time. When the battery has output voltage, the coil of the voltage relay is closed, the normally open contact of the voltage relay is closed, the coil of the intermediate relay is closed, the normally open contact of the intermediate relay is closed, the controller generates an enable signal, the diode is conducted, current enters the IGBT tube, constant-current output voltage is provided for the battery monitoring module, and the battery monitoring module works; when the voltage relay YJ does not collect the output voltage of the battery, the coil of the voltage relay is not closed, the normally open contact of the voltage relay YJ is disconnected, the coil of the intermediate relay is not closed, the normally open contact of the intermediate relay is disconnected, the controller does not generate an enable signal, the diode is not conducted and does not supply power to the battery monitoring module, and the battery monitoring module does not work. In a dormant state; and the battery monitoring module is dormant and awakened.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric automobile control technical field, concretely relates to hibernate awakening circuit. BACKGROUND

[0002] In the driving state, the battery monitoring module will communicate with other modules through CAN network in real time, collect the state information of the battery in the controllable battery pack and upload to the remote monitoring system, so that the background personnel can monitor the state of the battery in real time and carry out data analysis and maintenance, but the battery monitoring module is in real-time working state, has the problems of large energy consumption and short service life, resulting in high damage rate of the battery monitoring module. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the problems of real-time working state of the battery monitoring module, large energy consumption and short service life, and provides a battery monitoring module automatic hibernation circuit based on controllable battery pack.

[0004] The battery monitoring module automatic hibernation circuit based on controllable battery pack comprises a voltage relay YJ, a storage battery, an intermediate relay ZJ, a controller, a diode D1, a zener diode D2, IGBT tubes Q1-Q4 and resistors R1-R4.

[0005] The two ends of the voltage relay YJ coil are connected with the power supply end of the controllable battery pack; the positive pole of the storage battery is connected with one end of the normally open contact of the voltage relay YJ, the other end of the normally open contact of the voltage relay YJ is connected with one end of the intermediate relay ZJ coil, the other end of the intermediate relay ZJ coil is connected with the negative pole of the storage battery and one end of the normally open contact of the intermediate relay ZJ, and the other end of the normally open contact of the intermediate relay ZJ is connected with the driving signal input end of the controller.

[0006] The anode of the diode D1 is connected with the driving signal output end of the controller, the cathode of the diode D1 is connected with one end of the resistor R1 and the gate of the IGBT tube Q1, the emitter of the IGBT tube Q1 is connected with one end of the resistor R4, the collector of the IGBT tube Q1 is connected with the collector of the IGBT tube Q2 and one end of the resistor R2, the emitter of the IGBT tube Q2 is connected with the other end of the resistor R2, the emitter of the IGBT tube Q3 and the collector of the IGBT tube Q4, the gate of the IGBT tube Q2 is connected with the gate of the IGBT tube Q3, the collector of the IGBT tube Q3 is connected with the cathode of the zener diode D2 and the gate of the IGBT tube Q4, the emitter of the IGBT tube Q4 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with the enable signal end of the battery monitoring module, and the other end of the resistor R1, the other end of the resistor R4 and the anode of the zener diode D2 are all connected with the power supply ground.

[0007] Preferably, the circuit further comprises a double knife air switch DK,

[0008] The double knife air switch DK is connected in series between the battery power supply end and the voltage relay YJ coil.

[0009] Preferably, the circuit further comprises an air switch QF,

[0010] The air switch QF is arranged between the positive electrode of the battery and one end of the normally open contact of the voltage relay YJ.

[0011] Preferably, the battery is 24V.

[0012] Preferably, the controller is a switch controller.

[0013] Preferably, the switch controller is MAX16163 or MAX16164.

[0014] The beneficial effects of the utility model are:

[0015] When the battery has an output voltage, it means that the battery supplies power for the load, at this time, the battery monitoring module needs to collect the working state of the battery, and when the battery has no output voltage, it means that the battery is not working, and there is no need to monitor the working state of the battery, therefore, according to whether the battery has an output voltage, the sleep circuit of the utility model controls whether the battery monitoring module works, therefore, the sleep circuit of the utility model can control the battery monitoring module to start the working state when the battery works, and control the battery monitoring module to be in the sleep state when the battery does not work, thereby saving the energy consumption of the battery monitoring module and prolonging the service life of the battery monitoring module. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a circuit schematic diagram of the automatic sleep circuit of the battery monitoring module based on the controllable battery pack. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0019] The utility model will be further described below with reference to the drawings and specific embodiments, but it is not used as the limitation of the utility model.

[0020] Embodiment:

[0021] The battery monitoring module automatic sleep circuit based on the controllable battery pack includes a voltage relay YJ, a storage battery, an intermediate relay ZJ, a controller, a diode D1, a Zener diode D2, IGBT tubes Q1-Q4, and resistors R1-R4.

[0022] The two ends of the voltage relay YJ coil are connected to the power supply end of the controllable battery pack; the positive electrode of the storage battery is connected to one end of the normally open contact of the voltage relay YJ, the other end of the normally open contact of the voltage relay YJ is connected to one end of the coil of the intermediate relay ZJ, the other end of the coil of the intermediate relay ZJ is connected to the negative electrode of the storage battery and one end of the normally open contact of the intermediate relay ZJ at the same time, and the other end of the normally open contact of the intermediate relay ZJ is connected to the driving signal input end of the controller.

[0023] The anode of the diode D1 is connected to the driving signal output end of the controller, the cathode of the diode D1 is connected to one end of the resistor R1 and the gate of the IGBT tube Q1 at the same time, the emitter of the IGBT tube Q1 is connected to one end of the resistor R4, the collector of the IGBT tube Q1 is connected to the collector of the IGBT tube Q2 and one end of the resistor R2 at the same time, the emitter of the IGBT tube Q2 is connected to the other end of the resistor R2, the emitter of the IGBT tube Q3, and the collector of the IGBT tube Q4 at the same time, the gate of the IGBT tube Q2 is connected to the gate of the IGBT tube Q3, the collector of the IGBT tube Q3 is connected to the cathode of the Zener diode D2 and the gate of the IGBT tube Q4 at the same time, the emitter of the IGBT tube Q4 is connected to one end of the resistor R3, the other end of the resistor R3 is connected to the enable signal end of the battery monitoring module, and the other end of the resistor R1, the other end of the resistor R4, and the anode of the Zener diode D2 are all connected to the power supply ground.

[0024] Specifically, the existing controllable battery pack includes a battery pack shell, a battery arranged in the shell, a battery management device arranged in the shell and used for managing the battery power supply, and a power cut-off device arranged in the shell.

[0025] Further limited, the circuit further includes a double-knife air switch DK,

[0026] The battery power supply end and the voltage relay YJ coil are connected in series with the double-knife air switch DK.

[0027] Specifically, when the double-knife air switch DK is in the open state, the battery monitoring module collects the battery state in real time, and when the double-knife air switch DK is in the closed state, the battery monitoring module does not work in real time, so the state of the battery monitoring module can be switched by using the double-knife air switch DK, that is, the monitoring work is realized only when the battery works in real time or the battery works.

[0028] Further limited, the circuit further includes an air switch QF,

[0029] The air switch QF is arranged between the positive electrode of the battery and one end of the normally open contact of the voltage relay YJ.

[0030] Specifically, the air switch QF can be used to switch between the working state and the non-working state.

[0031] Further, the battery is 24V.

[0032] Further, the controller is a switch controller.

[0033] Specifically, the switch controller is used to receive and identify the upper-level command, control the start and braking of the subsequent device, and communicate with the subsequent device. In this embodiment, the switch controller outputs an enable signal to provide voltage for the subsequent circuit. The subsequent circuit adopts a current mirror form to maintain stable voltage and constant current output, and provides stable voltage for the battery monitoring module to ensure stable operation of the battery monitoring module.

[0034] Further, the switch controller is MAX16163 or MAX16164.

[0035] Working principle:

[0036] The battery in the controllable battery pack is used to supply power to the load, and the battery monitoring module is used to collect the state information of the battery. When the battery is in standby state, the battery does not supply power to the load, but the battery monitoring module still collects the battery information in real time. Therefore, the battery monitoring module has high energy consumption. In order to maintain the battery monitoring module and reduce the power consumption of the battery monitoring module, a sleep circuit is arranged. The principle of the sleep circuit is as follows:

[0037] The output voltage of the battery is collected by the voltage relay YJ. When there is output voltage, it indicates that the battery is in working state and is supplying power to the load. The coil of the voltage relay YJ is attracted, the normally open contact of the voltage relay YJ is closed, the coil of the intermediate relay ZJ is attracted, the normally open contact of the intermediate relay ZJ is closed, the controller generates an enable signal, the high level makes the diode D1 conduct, the current enters the IGBT tube Q1, and the IGBT tubes Q2 and Q3 form a current mirror. According to the input current, the output current is accurately copied to realize constant current output, which stably and constantly supplies power to the battery monitoring module, so that the battery monitoring module realizes the monitoring function and monitors the state of the battery.

[0038] When the voltage relay YJ does not collect the output voltage of the battery, it indicates that the battery is not working and is not supplying power to the load. The coil of the voltage relay YJ is not attracted, the normally open contact of the voltage relay YJ is opened, the coil of the intermediate relay ZJ is not attracted, the normally open contact of the intermediate relay ZJ is opened, the controller does not generate an enable signal, the diode D1 is not conductive, and the battery monitoring module is not powered, so that the battery monitoring module does not work and is in sleep state.

[0039] Therefore, when the output voltage of the battery is not collected, it is determined that the battery is on standby, at this time, the battery monitoring module is controlled to enter the sleep mode to reduce the power consumption, when the output voltage of the battery is collected, it is determined that the battery is in normal work, at this time, the battery monitoring module is controlled to work to realize the monitoring work.

[0040] While the application has been described with reference to particular embodiments thereof, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present application. It will thus be appreciated that numerous modifications can be made to the illustrative embodiments and that other arrangements can be devised without departing from the spirit and scope of the present application as defined by the appended claims. It will be understood that the features described with respect to one embodiment can be used in other embodiments.

Claims

1. An automatic sleep circuit for a battery monitoring module based on a controllable battery pack, characterized in that, The circuit includes a voltage relay YJ, a battery, an intermediate relay ZJ, a controller, a diode D1, a Zener diode D2, IGBT transistors Q1-Q4, and resistors R1-R4. The two ends of the voltage relay YJ coil are connected to the power supply terminal of the controllable battery pack; the positive terminal of the battery is connected to one end of the normally open contact of the voltage relay YJ, the other end of the normally open contact of the voltage relay YJ is connected to one end of the coil of the intermediate relay ZJ, the other end of the coil of the intermediate relay ZJ is connected to both the negative terminal of the battery and one end of the normally open contact of the intermediate relay ZJ, and the other end of the normally open contact of the intermediate relay ZJ is connected to the drive signal input terminal of the controller. The controller's drive signal output is connected to the anode of diode D1. The cathode of diode D1 is connected to one end of resistor R1 and the gate of IGBT Q1. The emitter of IGBT Q1 is connected to one end of resistor R4. The collector of IGBT Q1 is connected to the collector of IGBT Q2 and one end of resistor R2. The emitter of IGBT Q2 is connected to the other end of resistor R2, the emitter of IGBT Q3, and the collector of IGBT Q4. The gate of IGBT Q2 is connected to the gate of IGBT Q3. The collector of IGBT Q3 is connected to the cathode of Zener diode D2 and the gate of IGBT Q4. The emitter of IGBT Q4 is connected to one end of resistor R3. The other end of resistor R3 is connected to the enable signal terminal of the battery monitoring module. The other ends of resistor R1, resistor R4, and the anode of Zener diode D2 are all connected to the power supply ground.

2. The automatic sleep circuit for the battery monitoring module based on a controllable battery pack according to claim 1, characterized in that, The circuit also includes a double-pole air switch DK. A double-pole air switch DK is connected in series between the battery power supply terminal and the coil of the voltage relay YJ.

3. The automatic sleep circuit for the battery monitoring module based on a controllable battery pack according to claim 1, characterized in that, The circuit also includes an air switch QF. The air switch QF is located between the positive terminal of the battery and one end of the normally open contact of the voltage relay YJ.

4. The automatic sleep circuit for the battery monitoring module based on a controllable battery pack according to claim 1, characterized in that, The battery is 24V.

5. The automatic sleep circuit for the battery monitoring module based on a controllable battery pack according to claim 1, characterized in that, The controller is a switch controller.

6. The automatic sleep circuit for the battery monitoring module based on a controllable battery pack according to claim 5, characterized in that, The switch controller model is MAX16163 or MAX16164.

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