CN209980055U

CN209980055U - Battery work control device adaptive to environment

Info

Publication number: CN209980055U
Application number: CN201920860831.4U
Authority: CN
Inventors: 范从建; 魏方勇; 陈鑫
Original assignee: Fast Star Advanced Power System Suzhou Co Ltd
Current assignee: Fast Star Advanced Power System Suzhou Co Ltd
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-01-21
Anticipated expiration: 2029-06-10

Abstract

The utility model provides a battery work control device adapting to the environment, which has simple structure, is easy to realize, can effectively adapt to the control of the temperature and the humidity of the environment and has high safety; the intelligent control system comprises a control circuit, and a power circuit, a CAN bus transceiver, a battery output control circuit, a humidity acquisition circuit and a temperature acquisition circuit which are electrically connected with the control circuit, wherein the power circuit comprises a voltage stabilizer U1 with the model of L4988; the control circuit comprises a microprocessor U2 with model number MC9S08DZ 32; the CAN bus transceiver adopts a transceiver U4 with the model of TJA1050 and is used for finishing data interaction with the outside; pins 1 and 4 of the transceiver U4 are correspondingly connected with pins 13 and 14 of the microprocessor U2 respectively; the battery output control circuit comprises a chip U3 with the model of BTS5200, and a pin 7 of the chip U3 is connected with a pin 20 of the microprocessor U2; the humidity acquisition circuit comprises a sampling resistor R1; the temperature acquisition circuit is used for acquiring a temperature signal in real time and comprises a sampling resistor R3.

Description

Battery work control device adaptive to environment

Technical Field

The utility model relates to a new energy automobile technical field specifically is battery work controlling means of adaptation environment.

Background

As is well known, a battery management system is one of the core components of a new energy vehicle, and various problems such as overcharge, overdischarge, over-temperature, over-cooling, over-voltage, over-current and the like exist in a battery core of a power battery pack during the running process of an automobile, once the battery system works under the above conditions, the service life of the battery system is rapidly reduced, or insulation is low and the like, even a safety problem occurs, so that in order to ensure the use safety and good performance of the battery and prolong the service life of the battery, the battery is subjected to reasonable and effective environmental temperature and humidity monitoring management, and the working state of the battery is controlled according to the conditions.

Disclosure of Invention

To the problem, the utility model provides an adaptation environment's battery work controlling means, its simple structure easily realizes, can effectively adapt to the control of environment humiture, and the security is high.

The technical scheme is as follows: the method is characterized in that: which comprises a control circuit, and a power circuit, a CAN bus transceiver, a battery output control circuit, a humidity acquisition circuit and a temperature acquisition circuit which are electrically connected with the control circuit,

the power supply circuit is used for supplying power and comprises a voltage stabilizer U1 with the model number of L4988;

the control circuit is used for completing data acquisition and data interaction and calculating parameters and comprises a microprocessor U2 with the model of MC9S08DZ 32;

the CAN bus transceiver adopts a transceiver U4 with the model of TJA1050 and is used for finishing data interaction with the outside; pins 1 and 4 of the transceiver U4 are correspondingly connected with

pins

13 and 14 of the microprocessor U2 respectively;

the battery output control circuit is used for controlling battery output in real time and comprises a chip U3 with the model of BTS5200, and a pin 7 of the chip U3 is connected with a pin 20 of the microprocessor U2;

the humidity acquisition circuit is used for acquiring a humidity signal in real time and comprises a sampling resistor R1;

the temperature acquisition circuit is used for acquiring temperature signals in real time and comprises a sampling resistor R3.

It is further characterized in that:

the power supply circuit further comprises capacitors C1-C4, one ends of the capacitors C1-C4 are respectively and correspondingly connected with

pins

7, 8, 5 and 4 of the voltage stabilizer U1, the other ends of the capacitors C1-C4 are all grounded, a pin 2 of the voltage stabilizer U1 is grounded, and a pin 7 of the voltage stabilizer U1 is connected with a pin 3 of the transceiver U4, a pin 2 of the microprocessor U2, and one ends of the sampling resistors R1 and R3; the 2 pin of the transceiver U4 is grounded, and the 3 pin of the microprocessor U2 is grounded;

the battery output control circuit further comprises a relay K1, wherein a pin 15 of the chip U3 is connected with a pin 8 of the voltage stabilizer U1, a pin 1 of the chip U3 is connected with one end of a coil of the relay K1, and the other end of the coil of the relay K1 is connected with a pin 11 of the chip U3 and then grounded;

the humidity acquisition circuit further comprises a humidity-sensitive resistor R2, the humidity-sensitive resistor R2 is of a model HR202L, the other end of the sampling resistor R1 is connected with a pin 31 of the microprocessor U2 and one end of a humidity-sensitive resistor R2, and the other end of the humidity-sensitive resistor R2 is grounded;

the temperature acquisition circuit further comprises a thermistor R4, the thermistor R4 adopts a model CJZS-006, the other end of the sampling resistor R3 is connected with a pin 32 of the microprocessor U2 and one end of the thermistor R4, and the other end of the thermistor R4 is grounded.

The beneficial effects of the utility model are that, it passes through humidity acquisition circuit, corresponding humidity is gathered in real time to temperature acquisition circuit, temperature signal, and as safety control's input condition, then according to input condition, microprocessor CAN calculate and assess whether there is the potential safety hazard in the battery, send alarm information to other equipment through CAN bus transceiver afterwards, and through battery output control circuit control battery high-voltage output, but cut off the output of power pool when necessary, thereby reach the protection battery, the purpose of extension battery life, the security has been improved.

Drawings

Fig. 1 is a schematic circuit diagram of the present invention.

Detailed Description

As shown in figure 1, the utility model discloses a control circuit reaches power supply circuit, CAN bus transceiver, battery output control circuit, humidity acquisition circuit, the temperature acquisition circuit of being connected rather than the electricity.

The power circuit is used for supplying power, providing a driving power supply for the whole device, and ensuring that the energy of each circuit module is supplied, wherein the input voltage is 12V or 24V, and the output voltage is 5V; the power supply circuit comprises a voltage stabilizer U1 and capacitors C1-C4, wherein the model of the voltage stabilizer U1 is L4988; one end of each of the capacitors C1-C4 is correspondingly connected with

pins

7, 8, 5 and 4 of the voltage stabilizer U1, the other end of each of the capacitors is grounded, pin 2 of the voltage stabilizer U1 is grounded, and pin 7 of the voltage stabilizer U1 is connected with pin 3 of the transceiver U4, pin 2 of the microprocessor U2 and one end of each of the sampling resistors R1 and R3; the 2 pin of the transceiver U4 is grounded and the 3 pin of the microprocessor U2 is grounded.

And the control circuit is used for finishing data acquisition, data interaction and battery output control of each circuit module, performing parameter calculation, driving functional modules and the like, and comprises a microprocessor U2 with the model of MC9S08DZ 32.

The CAN bus transceiver adopts a transceiver U4 with the model number of TJA1050, is used for finishing data interaction with the outside, sending system state and alarm data to other equipment of a bus, and receiving data sent by other equipment, and pins 1 and 4 of the transceiver U4 are respectively and correspondingly connected with

pins

13 and 14 of a microprocessor U2.

The battery output control circuit is used for controlling the output of the battery in real time, and can take protective measures under the conditions of over-humidity, over-temperature and over-cooling of the battery so as to avoid safety problems; the input voltage of the battery output control circuit is 12V or 24V, and the microprocessor U2 can be connected or disconnected with the high-voltage output of the battery in real time through the battery output control circuit, so that the purpose of protecting the battery is achieved; the battery output control circuit comprises a chip U3 and a relay K1, wherein the model of the chip U3 is BTS5200, a pin 7 of the chip U3 is connected with a pin 20 of a microprocessor U2, a pin 15 of the chip U3 is connected with a pin 8 of a voltage stabilizer U1, a pin 1 of the chip U3 is connected with one end of a coil of the relay K1, and the other end of the coil of the relay K1 is connected with a pin 11 of the chip U3 and then grounded.

The humidity acquisition circuit is used for acquiring a humidity signal of the battery in real time and preventing the battery from working in an over-wet environment; the microprocessor U2 acquires humidity information through a humidity acquisition circuit, converts the humidity information into available data and is used for sending alarm information and carrying out battery output control; the humidity acquisition circuit comprises a sampling resistor R1 and a humidity-sensitive resistor R2, the humidity-sensitive resistor R2 adopts a model HR202L, the other end of the sampling resistor R1 is connected with a pin 31 of a microprocessor U2 and one end of a humidity-sensitive resistor R2, and the other end of the humidity-sensitive resistor R2 is grounded.

The temperature acquisition circuit is used for acquiring temperature signals of the battery in real time and avoiding the battery from working under the conditions of over-temperature and over-cooling; the microprocessor U2 acquires temperature information through a temperature acquisition circuit, converts the temperature information into available data and is used for sending alarm information and carrying out battery output control; the temperature acquisition circuit comprises a sampling resistor R3 and a thermistor R4, the thermistor R4 adopts a model CJZS-006, the other end of the sampling resistor R3 is connected with a pin 32 of a microprocessor U2 and one end of a thermistor R4, and the other end of the thermistor R4 is grounded.

In fig. 1, the P1 interface serves as a battery output control interface; the P2 interface is used as a battery humidity acquisition interface; the P3 interface serves as a battery temperature acquisition interface.

In the utility model, the microprocessor U2 communicates with other devices through the CAN bus transceiver, completes data interaction, collects temperature and humidity information through the temperature collection circuit and the humidity collection circuit, as the input condition of safety control, evaluates whether the battery has potential safety hazard according to the input condition, sends alarm information to other devices through the CAN bus transceiver, controls the high-voltage output of the battery through the battery output control circuit, cuts off the output of the battery when necessary, and achieves the purposes of protecting the battery and prolonging the service life of the battery;

the safety control method comprises the following specific steps of:

(1) the microprocessor U2 collects temperature and humidity signals through a temperature collecting circuit and a humidity collecting circuit and converts the signals into data;

(2) microprocessor U2 evaluates whether safety pre-warning and control is needed according to table 1:

TABLE 1

Wherein T is_SupercoolingTemperature threshold for overcooling of the battery, T_{Over-temperature}Is the over-temperature threshold of the battery;

RH_over-wettingA humidity threshold for excessive environmental humidity;

(3) and the microprocessor U2 carries out battery safety early warning and control according to the evaluation result, controls the high-voltage output of the battery through the battery output control circuit, and cuts off the battery output when necessary, thereby achieving the purposes of protecting the battery and prolonging the service life of the battery.

The utility model discloses the function is independent, and is with strong points, can effectively adapt to the battery job control of environment, and the security is high.

Claims

1. The battery work control device adapting to the environment comprises a control circuit, a power circuit, a CAN bus transceiver, a battery output control circuit, a humidity acquisition circuit and a temperature acquisition circuit, wherein the power circuit, the CAN bus transceiver, the battery output control circuit, the humidity acquisition circuit and the temperature acquisition circuit are electrically connected with the control circuit,

the CAN bus transceiver adopts a transceiver U4 with the model of TJA1050 and is used for finishing data interaction with the outside; pins 1 and 4 of the transceiver U4 are correspondingly connected with pins 13 and 14 of the microprocessor U2 respectively;

2. The environmentally adapted battery operation control apparatus of claim 1, wherein: the power supply circuit further comprises capacitors C1-C4, one ends of the capacitors C1-C4 are respectively and correspondingly connected with pins 7, 8, 5 and 4 of the voltage stabilizer U1, the other ends of the capacitors C1-C4 are all grounded, a pin 2 of the voltage stabilizer U1 is grounded, and a pin 7 of the voltage stabilizer U1 is connected with a pin 3 of the transceiver U4, a pin 2 of the microprocessor U2, and one ends of the sampling resistors R1 and R3; the 2 pin of the transceiver U4 is grounded and the 3 pin of the microprocessor U2 is grounded.

3. The environmentally adapted battery operation control apparatus of claim 1, wherein: the battery output control circuit further comprises a relay K1, wherein a pin 15 of the chip U3 is connected with a pin 8 of the voltage stabilizer U1, a pin 1 of the chip U3 is connected with one end of a coil of the relay K1, and the other end of the coil of the relay K1 is connected with a pin 11 of the chip U3 and then grounded.

4. The environmentally adapted battery operation control apparatus of claim 1, wherein: the humidity acquisition circuit further comprises a humidity sensitive resistor R2, the humidity sensitive resistor R2 adopts a model HR202L, the other end of the sampling resistor R1 is connected with a pin 31 of the microprocessor U2 and one end of the humidity sensitive resistor R2, and the other end of the humidity sensitive resistor R2 is grounded.

5. The environmentally adapted battery operation control apparatus of claim 1, wherein: the temperature acquisition circuit further comprises a thermistor R4, the thermistor R4 adopts a model CJZS-006, the other end of the sampling resistor R3 is connected with a pin 32 of the microprocessor U2 and one end of the thermistor R4, and the other end of the thermistor R4 is grounded.