CN216748485U - Power electricity core equipment control module and system - Google Patents
Power electricity core equipment control module and system Download PDFInfo
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- CN216748485U CN216748485U CN202220014000.7U CN202220014000U CN216748485U CN 216748485 U CN216748485 U CN 216748485U CN 202220014000 U CN202220014000 U CN 202220014000U CN 216748485 U CN216748485 U CN 216748485U
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Abstract
The utility model relates to the technical field of power battery formation and capacity grading equipment control, and aims to solve the technical problems of large volume and high cost of the conventional product. Compared with the existing product, the control module has the advantages of low cost and small volume, integrates a multipath input interface circuit and a multipath output control circuit, can meet the action control of formation and capacity division equipment, and has higher cost performance.
Description
Technical Field
The utility model relates to the technical field of power battery cell formation and capacity grading equipment control, in particular to a power battery cell equipment control module and a power battery cell equipment control system.
Background
On the development road of new energy in China, the new energy industry of power cells is rapidly advanced, and as the power batteries of new energy automobiles have higher requirements on the consistency of grouped batteries, the electric automobiles in recent years have ignition and spontaneous combustion in the driving and charging processes, and most of the problems are caused by the consistency of the batteries in a battery pack and the long-time over-charging and over-discharging states of a single battery in the using process. Therefore, the requirements on the quality and the standard of the power battery cell are more and more strict, and the needle bed movement mechanism is required to be controlled to move by the formation and capacity grading equipment through the control system.
The formation generally refers to that a series of technological measures are carried out on the battery which is charged for the first time to enable the performance of the battery to tend to be stable, and the technological measures comprise small-current charging and discharging, constant-temperature standing and the like. Capacity grading generally refers to the sorting of battery capacity and performance screening and grading. The other purpose of capacity grading is to classify and organize the batteries, namely screening out the single cells with the same internal resistance and capacity for combination. When combined, the battery pack can be formed only if the performances are very close.
At present, the formation and capacity grading equipment is commonly provided with a PLC control module, which is not only large in size, but also high in cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a power battery cell equipment control module and a system, which aim to solve the technical problems of large volume and high cost of the conventional product.
In order to achieve the above purpose, the specific technical scheme of the power cell equipment control module of the present invention is as follows:
as one aspect of the present invention, a power cell device control module includes an MCU, a plurality of input interface circuits for converting an external switching value input signal and inputting the converted signal into the MCU, a plurality of output control circuits for converting MCU control signals, a communication circuit for communicating the MCU with the outside, a sampling circuit for receiving a sampling signal, a voltage amplification circuit for amplifying an MCU output signal, and a power supply circuit for supplying power to the MCU and the above circuits, where the sampling circuit converts a weak current signal into a voltage signal and outputs the voltage signal to the MCU, and the voltage amplification circuit amplifies a micro voltage of the MCU output signal and outputs the amplified signal to an external device. Compared with the PLC, the MCU has the advantages of low cost and small volume of the whole control module, and meanwhile, the multi-path input interface circuit and the multi-path output control circuit are integrated, so that the action control of formation and capacity grading equipment can be met, and the cost performance is higher.
Furthermore, the MCU adopts an industrial chip, the integration level is high, the durability and the accuracy can be ensured, and the action control of the formation and capacity grading equipment can be accurately realized.
Furthermore, the input interface circuit and the output control circuit are isolated circuits, the input interface circuit and the output control circuit comprise optocouplers for photoelectric isolation, and safety is high through photoelectric isolation.
Furthermore, the sampling circuit comprises a first operational amplifier used as a voltage follower, the non-inverting input end of the first operational amplifier is connected with the sampling signal through a resistor R10, and the output end of the first operational amplifier is connected to the MCU through an RC filter circuit.
Further, the voltage amplifying circuit comprises a second operational amplifier, the non-inverting input end of the second operational amplifier is connected with the MCU, the output end of the second operational amplifier is connected with a resistance-capacitance filter circuit formed by resistors R8 and C5, and a resistor R7 for feedback is connected between the output end of the second operational amplifier and the inverting input end of the second operational amplifier.
Further, supply circuit includes one-level supply circuit, second grade supply circuit and tertiary supply circuit, second grade supply circuit's input is connected with one-level supply circuit's output, tertiary supply circuit's input is connected with second grade supply circuit's output, and one-level supply circuit is including the synchronous DC/DC converter that is used for the high-voltage difference conversion, and second grade supply circuit keeps apart through DC and supplies with the communication circuit power supply, and tertiary supply circuit includes the LDO converter.
Further, the communication circuit is an RS485 communication circuit.
As another aspect of the present invention, a power cell equipment control system is provided, including the above power cell equipment control module, and further including an upper computer connected to the communication circuit.
Furthermore, the input interface circuit is connected with a control button and/or a microswitch and/or a correlation sensor, and the output control circuit is connected with an electromagnetic valve and/or a three-color alarm lamp.
The power battery cell equipment control module provided by the utility model has the following advantages:
compared with the existing product, the MCU has the advantages of low cost and small volume of the whole control module, and meanwhile, the multi-path input interface circuit and the multi-path output control circuit are integrated, so that the action control of formation and capacity grading equipment can be met, and the cost performance is higher. In addition, the MCU adopts an industrial chip, the integration level is high, the durability and the accuracy can be ensured, and the action control of the formation and capacity grading equipment can be accurately realized; the safety is high through photoelectric isolation.
Drawings
Fig. 1 is a system block diagram of a power cell device control module of the present invention;
FIG. 2 is a circuit diagram of a portion of the input interface circuit of the present invention;
FIG. 3 is a circuit diagram of a portion of the output control circuit of the present invention;
FIG. 4 is a circuit diagram of a portion of the voltage amplification circuit of the present invention;
fig. 5 is a circuit diagram of a part of the sampling circuit of the present invention.
In the figure: a first operational amplifier U4A; a second op-amp U3A.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
As shown in fig. 1 to 5, the utility model provides a power cell device control module, which includes an MCU, an input interface circuit for converting an external input state signal and inputting the converted signal into the MCU, an output control circuit for converting an MCU control signal, a communication circuit for communicating the MCU with the outside, a sampling circuit for receiving a sampling signal and inputting the sampling signal into the MCU, a voltage amplification circuit for amplifying an MCU output signal, and a power supply circuit for supplying power to the above circuits.
MCU includes MCU and its peripheral circuit, and MCU for example can be STM32F103VCT6 industrial grade chip, has signal acquisition and communication function, and the integrated level is high, can guarantee durability and accuracy again.
The input interface circuit is connected with an external input type peripheral and used for receiving and collecting switching value input signals. The input type peripheral devices comprise control buttons, micro switches, a correlation sensor and the like. When a user operates a control button and a microswitch, a switch signal is generated; when an object passes through the correlation sensor, the correlation sensor outputs a switching signal, and the input interface circuit converts the switching signal and inputs the switching signal to the MCU.
The input interface circuit is an isolated input interface circuit, and photoelectric isolation is realized by arranging an optocoupler in the middle, so that the interference of an external environment on the control module is avoided.
Specifically, in one embodiment, as shown in fig. 2, the optical coupler U1A is included, the optical coupler U1A has an input end and an output end, the input end includes a light emitting diode, the output end includes a light sensing triode, the anode of the optical coupler U1A is connected with a +24V power supply through a resistor R1, the +24V power supply is connected to the GND _1 through a capacitor C12, the cathode of the optical coupler U1A is connected with the 1 st pin of the connector J1, the 2 nd pin of the connector J1 is connected to the GND _1, and the connector J1 can be plugged into a signal input end harness of an input type peripheral. The collecting electrode of opto-coupler U1A is connected with pull-up resistance, makes the collecting electrode obtain the pull-up voltage through the +5V power, and the collecting electrode is connected with MCU, and opto-coupler U1A's emitter ground GND.
For example, when the control button is pressed when the connector J1 is connected to the control button, the cathode of the optocoupler U1A is connected to the ground GND _1, the internal light emitting diode emits light, the phototransistor is turned on after sensing light, the collector voltage is pulled low, and the low level is detected by the MCU.
It can be seen that the input end and the output end of the optocoupler U1A are completely isolated, and through the conversion from electricity to light and then to electricity, the grounds at the two ends are not on the same ground plane, so that the introduction of external interference into the MCU is avoided, and the performance is more reliable.
The above is an example of a single circuit channel, and in practical applications, a plurality of identical circuits are included to form a multi-interface input interface circuit.
The output control circuit is connected with an external output type peripheral, a control signal generated by the MCU acts on the output type peripheral through the output control circuit, the output type peripheral is used for executing relevant actions or displaying relevant states, and the output type peripheral is provided with an electromagnetic valve, a three-color alarm lamp and the like. Specifically, the output control circuit is used to output control signals to various actuators directed to an object to be controlled, and converts the control signals generated by the MCU into signals output as required on site to drive an electromagnetic valve, a three-color alarm lamp, and the like.
The output control circuit is an isolated input interface circuit, and photoelectric isolation is realized by arranging an optocoupler in the middle, so that the interference of an external environment on the control module is avoided.
Specifically, in one embodiment, as shown in fig. 3, the optical coupler type relay U2A is included, and has an input end and an output end, where the input end includes a light emitting diode, and the output end includes a relay controlled by the light emission of the light emitting diode, and the reason is similar to the optical coupler U1A, the inside is isolated by light, the anode of the light emitting diode is connected with a +5V power supply through a current limiting resistor R3, the cathode of the light emitting diode is connected with the MCU, and the output end is connected with a connector J3, and the connector J3 is used for connecting an output type peripheral. The 1 st pin of the connector J3 is connected with a power supply +24V _1, and the output end in the optocoupler type relay U2A is respectively connected with the 2 nd pin of the connector J3 and the ground GND _ 1.
For example, the connector J3 is connected to the solenoid valve, when the MCU control terminal QG _ OUT1 outputs a low level, the MCU controls the light emitting diode in the optocoupler U2A to emit light, the optocoupler U2A is turned on, the state of the solenoid valve changes correspondingly, the 2 nd pin of the connector is connected to the ground GND _1, and the solenoid valve obtains a voltage to generate an action.
In order to eliminate the inductance, a diode D3 is connected between two pins of the connecting piece J3, the diode D3 plays a protection role and is used for absorbing reverse current, the electromagnetic valve belongs to an inductive element, when the current of the electromagnetic valve is disconnected, very large reverse electromotive force can be generated, and the diode D3 provides a path for the reverse potential to avoid breakdown damage; the power supply +24V _1 may be connected to GND _1 through a capacitor C3 for filtering out interference.
It can be seen that the input end and the output end of the optical coupling relay are completely isolated, the input end and the output end of the optical coupling relay are converted from electricity to light and then to electricity, the grounds at the two ends are not on the same ground plane, external interference is prevented from being introduced into the MCU, and the performance is more reliable. The reverse electromotive force is absorbed by the diode D3, and the safety of the circuit is ensured.
As shown in fig. 5, the sampling circuit includes a first operational amplifier U4A serving as a voltage follower, the first operational amplifier U4A is a precision operational amplifier of an OPA2196 type, a non-inverting input terminal of the first operational amplifier U4A is connected to a sampling signal through a resistor R10, and an output terminal of the first operational amplifier U4A is connected to the MCU through an RC filter circuit.
The sampling signal is a 4-20mA direct current signal, is converted into a voltage signal through the first operational amplifier U4A, is filtered through the RC filter circuit and is input to the ADC end of the MCU, and the MCU performs processing on sampling data.
As shown in fig. 4, the voltage amplifying circuit includes a precision second operational amplifier U3A, a non-inverting input terminal of the second operational amplifier U3A is connected to the MCU, an output terminal of the second operational amplifier U3A is connected to a rc filter circuit formed by resistors R8 and C5, and a resistor R7 for feedback is connected between an output terminal of the second operational amplifier U3A and an inverting input terminal thereof.
The voltage amplifying circuit is used for outputting 0-10V direct-current voltage, the DAC2 end amplifies the micro-voltage generated by the MCU through the second operational amplifier U3A, and the amplified voltage is filtered through the resistance-capacitance filter circuit and output to the control end of the external equipment.
The problem of poor driving capability of a weak signal output by the MCU is solved through the voltage amplifying circuit.
The communication circuit CAN be a CAN communication circuit, an Ethernet communication circuit or an RS485 communication circuit.
In one embodiment, the communication circuit is an RS485 communication circuit.
The power supply circuit comprises a first-level power supply circuit, a second-level power supply circuit and a third-level power supply circuit, wherein the input end of the second-level power supply circuit is connected with the output end of the first-level power supply circuit, the input end of the third-level power supply circuit is connected with the output end of the second-level power supply circuit, the first-level power supply circuit comprises a synchronous DC/DC converter for high-voltage-difference conversion, the second-level power supply circuit supplies power to the communication circuit through DC isolation, and the third-level power supply circuit comprises an LDO converter. The primary power supply circuit is used for converting 24V into 5V and adopts a synchronous DC/DC converter, the tertiary power supply circuit is used for converting 5V into 3.3V and adopts an LDO (low dropout regulator) converter, and the secondary power supply circuit comprises an isolation circuit formed by connecting a diode and an inductor in series.
The synchronous DC/DC converter has the advantages of high efficiency, large power and large input-output voltage difference, and can directly convert 24V into 5V; the LDO converter has the advantage of small power supply ripple, and the input end of the LDO converter is connected with the output end of the synchronous DC/DC converter; the power isolation converter has the advantages of strong anti-interference capability and high safety, and ensures the communication quality. The three are matched to supply power to different types of circuits, and the cost performance is optimized to the maximum extent.
The utility model also provides a power battery cell equipment control system which comprises the power battery cell equipment control module and an upper computer connected with the communication circuit, wherein the communication circuit is in information interaction with the upper computer.
The input interface circuit is connected with a control button and/or a microswitch and/or a correlation sensor, and the output control circuit is connected with an electromagnetic valve and/or a three-color alarm lamp.
The power battery cell equipment control module and the system provided by the utility model integrate the multi-path input interface circuit and the multi-path output control circuit, can meet the action control of formation and capacity division equipment, have small volume and low cost, and bring greater benefit for the application of the actual formation and capacity division equipment. MCU adopts industrial level chip, and the integrated level is high, can guarantee durability and accuracy again. The PLC module can be replaced, the cost is low, and the action control of the formation and capacity grading equipment can be accurately realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A power battery cell equipment control module is characterized by comprising an MCU (microprogrammed control Unit), a plurality of input interface circuits for converting an external switching value input signal and inputting the converted signal into the MCU, a plurality of output control circuits for converting an MCU control signal, a communication circuit for communicating the MCU with the outside, a sampling circuit for receiving a sampling signal, a voltage amplifying circuit for amplifying an MCU output signal and a power supply circuit for supplying power to the MCU and the circuits;
the sampling circuit converts a weak current signal into a voltage signal and outputs the voltage signal to the MCU, and the voltage amplifying circuit amplifies a micro-voltage of the MCU output signal and outputs the micro-voltage to an external device.
2. The power cell device control module of claim 1, wherein the input interface circuit and the output control circuit are isolated circuits, and the input interface circuit and the output control circuit include opto-couplers for opto-electrical isolation.
3. The power cell device control module of claim 2, wherein the sampling circuit comprises a first operational amplifier serving as a voltage follower, a non-inverting input terminal of the first operational amplifier is connected to the sampling signal through a resistor R10, and an output terminal of the first operational amplifier is connected to the MCU through an RC filter circuit.
4. The control module of the power cell equipment of claim 3, wherein the voltage amplifying circuit includes a second operational amplifier, a non-inverting input terminal of the second operational amplifier is connected to the MCU, an output terminal of the second operational amplifier is connected to a resistance-capacitance filter circuit formed by resistors R8 and C5, and a resistor R7 for feedback is connected between an output terminal of the second operational amplifier and an inverting input terminal thereof.
5. The power cell device control module of claim 4, wherein the power supply circuit includes a primary power supply circuit, a secondary power supply circuit, and a tertiary power supply circuit, an input of the secondary power supply circuit is connected to an output of the primary power supply circuit, an input of the tertiary power supply circuit is connected to an output of the secondary power supply circuit, the primary power supply circuit includes a synchronous DC/DC converter for high-dropout voltage conversion, the secondary power supply circuit supplies power to the communication circuit through DC isolation, and the tertiary power supply circuit includes an LDO converter.
6. The power cell device control module of claim 5, wherein the communication circuit is an RS485 communication circuit.
7. The power cell device control module of claim 1, wherein the MCU is an industrial MCU chip.
8. A power cell equipment control system comprising the power cell equipment control module of any one of claims 1 to 7, and further comprising an upper computer connected to the communication circuit.
9. The power cell equipment control system of claim 8, wherein the input interface circuit is connected to a control button and/or a microswitch and/or a correlation sensor, and the output control circuit is connected to a solenoid valve and/or a tristimulus warning lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220014000.7U CN216748485U (en) | 2022-01-06 | 2022-01-06 | Power electricity core equipment control module and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220014000.7U CN216748485U (en) | 2022-01-06 | 2022-01-06 | Power electricity core equipment control module and system |
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| CN216748485U true CN216748485U (en) | 2022-06-14 |
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| CN202220014000.7U Active CN216748485U (en) | 2022-01-06 | 2022-01-06 | Power electricity core equipment control module and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116587256A (en) * | 2023-07-17 | 2023-08-15 | 江苏新惕姆智能装备有限公司 | Valve island for robot integrated clamp |
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2022
- 2022-01-06 CN CN202220014000.7U patent/CN216748485U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116587256A (en) * | 2023-07-17 | 2023-08-15 | 江苏新惕姆智能装备有限公司 | Valve island for robot integrated clamp |
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Address after: 523000 Room 403, building 2, No. 15, Gongye West Road, Songshanhu Park, Dongguan City, Guangdong Province Patentee after: Guangdong Hengyineng Technology Co.,Ltd. Address before: 523000 Room 403, building 2, No. 15, Gongye West Road, Songshanhu Park, Dongguan City, Guangdong Province Patentee before: Guangdong Hengyi Energy Technology Co.,Ltd. |