CN209982120U - Control device for prolonging service life of battery - Google Patents
Control device for prolonging service life of battery Download PDFInfo
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- CN209982120U CN209982120U CN201920861121.3U CN201920861121U CN209982120U CN 209982120 U CN209982120 U CN 209982120U CN 201920861121 U CN201920861121 U CN 201920861121U CN 209982120 U CN209982120 U CN 209982120U
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Abstract
The utility model provides a control device for prolonging the service life of a battery, which has simple structure and easy realization, can reasonably and effectively manage and control the battery, and has high safety, thereby effectively prolonging the service life of the battery; the intelligent control system comprises a control circuit, and a power supply circuit, a CAN bus transceiver, a safety switch control circuit, a voltage acquisition circuit, a current acquisition circuit and a temperature acquisition circuit which are electrically connected with the control circuit, wherein the power supply circuit comprises a voltage stabilizer U1 with the model of L4988; the control circuit comprises a microprocessor U3 with model number S9S08DZ32 MLC; 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 U3 respectively; the safety switch control circuit comprises a chip U2 with the model of BTS5200, and a pin 7 of the chip U2 is connected with a pin 17 of the microprocessor U3; the voltage acquisition circuit comprises a sampling resistor R4; the current acquisition circuit comprises a sampling resistor R5; the temperature acquisition circuit comprises a sampling resistor R6.
Description
Technical Field
The utility model relates to a new energy automobile technical field specifically is extension battery life's controlling means.
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 in 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 safety problems occur, 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 must be reasonably and effectively managed and controlled.
Disclosure of Invention
To the problem, the utility model provides an extension battery life's controlling means, its simple structure easily realizes, can carry out reasonable effectual management and control to the battery, and the security is high to effectively prolong battery life.
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 safety switch control circuit, a voltage acquisition circuit, a current 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 finishing data acquisition and data interaction and calculating parameters, and comprises a microprocessor U3 with the model of S9S08DZ32 MLC;
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 U3 respectively;
the safety switch control circuit is used for controlling the high-voltage output of the battery in real time and comprises a chip U2 with the model of BTS5200, wherein 7 pins of the chip U2 are connected with 17 pins of the microprocessor U3;
the voltage acquisition circuit is used for acquiring voltage signals in real time and comprises a sampling resistor R4;
the current acquisition circuit is used for acquiring current signals in real time and comprises a sampling resistor R5, and a pin 30 of the microprocessor U3 is connected with the sampling resistor R5 and then grounded;
the temperature acquisition circuit is used for acquiring temperature signals in real time and comprises a sampling resistor R6.
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 U3 and one end of a sampling resistor R6;
the circuit also comprises a resistor R7, wherein one end of the resistor R7 is connected with the pin 8 of the transceiver U4, and the other end of the resistor R7 is connected with the pin 2 of the transceiver U4 and the pin 3 of the microprocessor U3 and then is grounded;
the safety switch control circuit further comprises a relay K1, wherein a pin 15 of the chip U2 is connected with a pin 8 of the voltage stabilizer U1, a pin 1 of the chip U2 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 U2 and then grounded;
the voltage acquisition circuit further comprises resistors R1-R3, the resistors R2, R1 and R3 are sequentially connected with the sampling resistor R4 in series, and a pin 27 of the microprocessor U3 is connected between the resistor R3 and the sampling resistor R4;
the temperature acquisition circuit further comprises a thermistor R8, the thermistor R8 adopts a model of NCP18XH103F03RB, the other end of the sampling resistor R6 is connected with a pin 32 of the microprocessor U3 and one end of the thermistor R8, and the other end of the thermistor R8 is grounded.
The beneficial effects of the utility model are that, it passes through voltage acquisition circuit, the electric current acquisition circuit, corresponding voltage is gathered in real time to the temperature acquisition circuit, electric current, temperature signal, and as safety control's input condition, then according to input condition, microprocessor CAN calculate whether there is the potential safety hazard in the aassessment battery, send alarm information to other equipment through CAN bus transceiver afterwards, and through safety switch control circuit control battery high-voltage output, but switch off power battery output when necessary, thereby reach the protection battery, prolong battery life's purpose, and the security is high.
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, safety switch control circuit, voltage acquisition circuit, current acquisition circuit, the temperature acquisition circuit of being connected rather than the electricity.
The power supply 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 U3 and one end of the sampling resistor R6.
The control circuit is used for completing data acquisition, data interaction and safety switch control of each circuit module, performing parameter calculation, driving function modules and the like, and comprises a microprocessor U3 with the model of S9S08DZ32 MLC.
The CAN bus transceiver adopts a transceiver U4 with the model of TJA1050, and 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; pins 1 and 4 of the transceiver U4 are correspondingly connected with pins 13 and 14 of the microprocessor U3, respectively, the transceiver U4 further comprises a resistor R7, one end of the resistor R7 is connected with pin 8 of the transceiver U4, and the other end of the resistor R7 is connected with pin 2 of the transceiver U4 and pin 3 of the microprocessor U3 and then grounded.
The safety switch control circuit is used for controlling the high-voltage output of the battery in real time, and can take protective measures under the conditions of over-humidity, over-temperature, over-cooling and the like of the battery so as to avoid safety problems and reduction of the service life of the battery; the input voltage of the safety switch control circuit is 12V or 24V, and the microprocessor U3 can be connected or disconnected with the high-voltage output of the battery in real time through the safety switch control circuit, so that the purpose of protecting the battery is achieved; the circuit comprises a chip U2 and a relay K1, wherein the model of the chip U2 is BTS5200, the relay K1 is used as a safety switch, 7 pins of the chip U2 are connected with 17 pins of a microprocessor U3, 15 pins of the chip U2 are connected with 8 pins of a voltage stabilizer U1, 1 pin of the chip U2 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 11 pins of the chip U2 and then grounded.
The voltage acquisition circuit is used for acquiring voltage signals in real time, and avoiding overvoltage and undervoltage of the battery, namely preventing overcharge and overdischarge conditions; the microprocessor U3 acquires voltage information through a voltage acquisition circuit, converts the voltage information into available data and is used for sending alarm information and carrying out safety control; the circuit comprises resistors R1-R3 and a sampling resistor R4, wherein the resistors R2, R1 and R3 are sequentially connected with the sampling resistor R4 in series, and a pin 27 of the microprocessor U3 is connected between the resistor R3 and the sampling resistor R4.
The current acquisition circuit is used for acquiring current signals in real time to avoid overcurrent of the battery; the microprocessor U3 acquires current information through the current acquisition circuit, converts the current information into available data and is used for sending alarm information and carrying out safety control; the sampling resistor R5 is included, and the pin 30 of the microprocessor U3 is connected with the sampling resistor R5 and then 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 U3 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 safety control; the sampling circuit comprises a sampling resistor R6 and a thermistor R8, wherein the thermistor R8 adopts a model of NCP18XH103F03RB, the other end of the sampling resistor R6 is connected with a pin 32 of the microprocessor U3 and one end of the thermistor R8, and the other end of the thermistor R8 is grounded.
In fig. 1, the P1 interface serves as a safety switch control interface; the P2 interface is used as a battery voltage acquisition interface; the P3 interface is used as a battery current acquisition interface; the P4 interface serves as a battery temperature acquisition interface.
The utility model discloses in, microprocessor U3 communicates with other equipment through CAN bus transceiver, accomplish the data interaction, gather voltage, electric current, temperature information in real time through voltage acquisition circuit, current acquisition circuit and temperature acquisition circuit, as safety control's input condition, according to the input condition, whether the aassessment battery has the potential safety hazard, and send alarm information to other equipment through CAN bus transceiver, control battery high-voltage output through electric safety switch control circuit, cut off battery output when necessary, reach the protection battery, the purpose of extension battery life;
the safety control method comprises the following specific steps of:
(1) the microprocessor U3 collects voltage, current and temperature signals in real time through a voltage, current and temperature collecting circuit and converts the signals into data;
(2) microprocessor U3 evaluates whether safety pre-warning and control is needed according to table 1:
TABLE 1
Wherein VUnder-voltageVoltage threshold, V, for undervoltage of the batteryOverpressureVoltage threshold for battery overvoltage, IOver-currentCurrent threshold for over-current of battery, TSupercoolingTemperature threshold for overcooling of the battery, TOver-temperatureIs the over-temperature threshold of the battery;
(3) the microprocessor U3 carries out battery safety early warning and control according to the evaluation result, controls the high-voltage output of the battery through the safety switch control circuit, cuts off the battery output when necessary, achieves the purposes of protecting the battery and prolonging the service life of the battery, and has high safety.
Claims (6)
1. The control device for prolonging the service life of the battery is characterized in that: the intelligent control system comprises a control circuit, and a power circuit, a CAN bus transceiver, a safety switch control circuit, a voltage acquisition circuit, a current acquisition circuit and a temperature acquisition circuit which are electrically connected with the control circuit, wherein the power circuit is used for supplying power and comprises a voltage stabilizer U1 with the model of L4988;
the control circuit is used for finishing data acquisition and data interaction and calculating parameters, and comprises a microprocessor U3 with the model of S9S08DZ32 MLC;
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 U3 respectively;
the safety switch control circuit is used for controlling the high-voltage output of the battery in real time and comprises a chip U2 with the model of BTS5200, wherein 7 pins of the chip U2 are connected with 17 pins of the microprocessor U3;
the voltage acquisition circuit is used for acquiring voltage signals in real time and comprises a sampling resistor R4;
the current acquisition circuit is used for acquiring current signals in real time and comprises a sampling resistor R5, and a pin 30 of the microprocessor U3 is connected with the sampling resistor R5 and then grounded;
the temperature acquisition circuit is used for acquiring temperature signals in real time and comprises a sampling resistor R6.
2. The control device for extending battery life according to claim 1, characterized in that: the power supply circuit further comprises capacitors C1-C4, one ends of the capacitors C1-C4 are correspondingly connected with pins 7, 8, 5 and 4 of the voltage stabilizer U1 respectively, the other ends of the capacitors are 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 U3 and one end of the sampling resistor R6.
3. The control device for extending battery life according to claim 1, characterized in that: the circuit further comprises a resistor R7, one end of the resistor R7 is connected with the pin 8 of the transceiver U4, and the other end of the resistor R7 is connected with the pin 2 of the transceiver U4 and the pin 3 of the microprocessor U3 and then grounded.
4. The control device for extending battery life according to claim 1, characterized in that: the safety switch control circuit further comprises a relay K1, wherein a pin 15 of the chip U2 is connected with a pin 8 of the voltage stabilizer U1, a pin 1 of the chip U2 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 U2 and then grounded.
5. The control device for extending battery life according to claim 1, characterized in that: the voltage acquisition circuit further comprises resistors R1-R3, the resistors R2, R1 and R3 are sequentially connected with the sampling resistor R4 in series, and a pin 27 of the microprocessor U3 is connected between the resistor R3 and the sampling resistor R4.
6. The control device for extending battery life according to claim 2, characterized in that: the temperature acquisition circuit further comprises a thermistor R8, the thermistor R8 adopts a model of NCP18XH103F03RB, the other end of the sampling resistor R6 is connected with a pin 32 of the microprocessor U3 and one end of the thermistor R8, and the other end of the thermistor R8 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920861121.3U CN209982120U (en) | 2019-06-10 | 2019-06-10 | Control device for prolonging service life of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920861121.3U CN209982120U (en) | 2019-06-10 | 2019-06-10 | Control device for prolonging service life of battery |
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| Publication Number | Publication Date |
|---|---|
| CN209982120U true CN209982120U (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920861121.3U Active CN209982120U (en) | 2019-06-10 | 2019-06-10 | Control device for prolonging service life of battery |
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| Country | Link |
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| CN (1) | CN209982120U (en) |
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- 2019-06-10 CN CN201920861121.3U patent/CN209982120U/en active Active
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