WO2023077359A1

WO2023077359A1 - Control system, emergency start power supply, and battery clip

Info

Publication number: WO2023077359A1
Application number: PCT/CN2021/128714
Authority: WO
Inventors: 雷云; 张智锋; 程铭
Original assignee: 深圳市华思旭科技有限公司
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2023-05-11

Abstract

Disclosed in embodiments of the present application are a control system, an emergency start power supply, and a battery clip. The control system comprises a control logic operation circuit, a switch module, and at least one monitoring module; the control logic operation circuit is connected to the at least one monitoring module and the switch module; the switch module is separately connected to a power supply module and an output load; the control logic operation circuit is configured to perform a logic operation according to at least one electric signal inputted by the at least one monitoring module and then output a control signal; and the switch module is configured to control a conduction state between the power supply module and the output load on the basis of the control signal so as to control a power supply state of the power supply module to the output load. The embodiments of the present application can reduce the design complexity of the control system.

Description

Control system, emergency start power supply and battery clip

technical field

The application relates to the technical field of electronic circuits, in particular to a control system, an emergency starting power supply and a battery clip.

Background technique

At present, the car emergency starter power supply on the market is based on the traditional mobile power supply to expand the function of the application scene, with multi-function and portability. The main function of its expansion is to start the car when the car is out of power or cannot be started for other reasons, and it also has the basic functions of the traditional mobile power supply.

In order to improve the portability of the car emergency start power supply, the control system of the output switch is usually placed outside to form an independent control system, referred to as the battery clip; the design of the control system of this battery clip is based on the microcontroller (microcontroller) unit, MCU) to complete the sampling of voltage and current, the control of the output switch and related protection functions. Adding to the complexity of the system design is the fact that the microcontroller MCU requires a programming process and requires a watchdog circuit to operate reliably.

Contents of the invention

The embodiment of the present application provides a control system, an emergency start power supply and a battery clip, which can reduce the complexity of the design of the control system.

The first aspect of the embodiment of the present application provides a control system, including a control logic operation circuit, a switch module, and at least one monitoring module;

The control logic operation circuit is connected to the at least one monitoring module and the switch module; the switch module is also connected to the power supply module and the output load respectively;

The control logic operation circuit is used to output a control signal after performing a logic operation according to at least one electrical signal input by the at least one monitoring module; the switch module is used to control the power supply module and the output power module based on the control signal The conduction state between the loads is used to control the power supply state of the power supply module to the output load.

Optionally, the control signal includes a turn-on signal or a turn-off signal; when the control signal includes a turn-on signal, the switch module is configured to control the power supply module to The output load supplies power; when the control signal includes a shutdown signal, the switch module is used to cut off the loop between the power supply module and the output load based on the shutdown signal.

Optionally, the at least one monitoring module includes a combination of one or more of the battery voltage monitoring module, temperature monitoring module, output current monitoring module, load connection polarity identification module and load voltage monitoring module.

Optionally, when at least one monitoring module includes a battery voltage monitoring module, a temperature monitoring module, an output current monitoring module, a load connection polarity identification module, and a load voltage monitoring module, the control logic operation circuit includes at least one input terminal , the at least one input terminal includes a first input terminal, a second input terminal, a third input terminal, a fourth input terminal and a fifth input terminal; the output terminal of the battery voltage monitoring module outputs to the first input terminal The first electrical signal, the output end of the temperature monitoring module outputs a second electrical signal to the second input end, the output end of the output current monitoring module outputs a third electrical signal to the third input end, the The output terminal of the load connection polarity identification module outputs a fourth electrical signal to the fourth input terminal, and the output terminal of the load voltage monitoring module outputs a fifth electrical signal to the fifth input terminal.

Optionally, when the control system is in the automatic output mode, when the battery voltage monitoring module detects that the voltage of the power module is in the first threshold interval, and the temperature monitoring module detects that the temperature of the power module In the second threshold interval or the temperature of the switch module is in the third threshold interval, and the output current monitoring module detects that the discharge current output by the power module to the output load is in the fourth threshold interval, and the load The connection polarity identification module monitors the positive polarity of the output load, and the load voltage monitoring module monitors that the absolute value of the voltage drop slope of the output load is greater than the fifth threshold, the control logic operation circuit according to the The first electrical signal, the second electrical signal, the third electrical signal, the fourth electrical signal and the fifth electrical signal output the conduction signal.

Optionally, when the battery voltage monitoring module monitors that the voltage of the power module is not within the first threshold interval, or the temperature monitoring module monitors that the temperature of the power module is not within the second threshold range or when the temperature of the switch module is not in the third threshold range, or when the output current monitoring module monitors that the discharge current output by the power module to the output load is not in the fourth threshold range, Or when the load connection polarity identification module monitors the reverse polarity of the output load, or when the load voltage monitoring module monitors that the absolute value of the voltage drop slope of the output load is less than the fifth threshold, The control logic operation circuit outputs the shutdown signal according to the first electrical signal, the second electrical signal, the third electrical signal, the fourth electrical signal and the fifth electrical signal.

Optionally, the control system further includes a key input unit. When the control system is in the forced output mode, the battery voltage monitoring module detects that the voltage of the power module is in the first threshold range, and the temperature The monitoring module monitors that the temperature of the power module is in the second threshold range or the temperature of the switch module is in the third threshold range, and the output current monitoring module monitors the discharge current output by the power module to the output load In the fourth threshold interval, and the load connection polarity identification module monitors the polarity of the output load to be directly connected, if the control system receives a user instruction input through the key input unit, the control logic The arithmetic circuit outputs the conduction signal within a preset time period according to the first electrical signal, the second electrical signal, the third electrical signal and the fourth electrical signal.

Optionally, when the battery voltage monitoring module monitors that the voltage of the power module is not within the first threshold interval, or the temperature monitoring module monitors that the temperature of the power module is not within the second threshold range or when the temperature of the switch module is not in the third threshold range, or when the output current monitoring module monitors that the discharge current output by the power module to the output load is not in the fourth threshold range, Or when the load connection polarity identification module monitors the reverse polarity of the output load, the control logic operation circuit and the fourth electrical signal to output the shutdown signal.

Optionally, the control system further includes a status output unit, configured to output warning information when the control logic operation circuit outputs the shutdown signal.

Optionally, the switch module includes any one of a power electronic switch, a relay, and a field effect transistor.

The second aspect of the embodiment of the present application provides an emergency starting power supply, including any control system of the first aspect of the embodiment of the present application.

The third aspect of the embodiment of the present application provides a battery clamp, including any control system of the first aspect of the embodiment of the present application.

An embodiment of the present application provides a control system, including a control logic operation circuit, a switch module, and at least one monitoring module; the control logic operation circuit is connected to the at least one monitoring module and the switch module, and the switch modules are also respectively connected to A power supply module and an output load; the control logic operation circuit is used to output a control signal after performing a logic operation according to at least one electrical signal input by the at least one monitoring module; the switch module is used to control the control signal based on the control signal The conduction state between the power module and the output load is used to control the power supply state of the power module to the output load. Compared with using an MCU that needs to be programmed, the control logic operation circuit only needs to perform logic operations based on at least one electrical signal output by at least one monitoring module and then output a control signal, which can control the switch module to be turned on or off, thereby controlling The power supply status of the power module to the output load can reduce the complexity of the control system design.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural diagram of a control system provided by an embodiment of the present application;

Fig. 2 is a schematic structural diagram of another control system provided by the embodiment of the present application;

Fig. 3 is a schematic structural diagram of another control system provided by an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a load voltage monitoring module provided in an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a load voltage monitoring module provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of a simulation result waveform of a load voltage monitoring module provided in an embodiment of the present application;

Fig. 7 is a signal simulation waveform diagram when a simulated automobile is periodically started provided by the embodiment of the present application;

Fig. 8 is a schematic structural diagram of an emergency starting power supply provided by an embodiment of the present application;

Fig. 9 is a schematic structural diagram of a battery clip provided in an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described implementations are part of the implementations of this application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this application.

The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally further includes For other steps or units inherent in these processes, methods, products or devices.

Reference in this application to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

The embodiment of the present application provides a control system, an emergency start power supply and a battery clip. Compared with the MCU that needs to be programmed, the control logic operation circuit only needs to output at least one electrical signal according to at least one monitoring module for logic operation and then output the control signal. The control signal can control the switch module to be turned on or off, thereby controlling the power supply state of the power module to the output load, which can reduce the complexity of the control system design. Each will be described in detail below.

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of a control system provided by an embodiment of the present application. As shown in FIG. 1, the control system 100 described in this embodiment includes a control logic operation circuit 10, a switch module 20 and at least one monitoring module;

The control logic operation circuit 10 is connected to at least one monitoring module and the switch module 20; the switch module 20 is also connected to the power module 200 and the output load 300 respectively;

The control logic operation circuit 10 is used to output a control signal after performing a logic operation according to at least one electrical signal input by the at least one monitoring module;

The switch module 20 is used for controlling the conduction state between the power module 200 and the output load 300 based on the control signal, so as to control the power supply state of the output load 300 by the power module 200 .

The control logic operation circuit 10 may include at least one input terminal and a first output terminal; the at least one input terminal is respectively connected to the output terminal of the at least one monitoring module; the first output terminal is connected to the switch module 20 The control terminal of the switch module 20 is used to connect the power supply module 200, and the output terminal of the switch module 20 is used to connect the output load 300; the control logic operation circuit 10 can be based on the at least one input After at least one electrical signal input at the terminal is subjected to a logic operation, a control signal is output through the first output terminal, and the switch module 20 is used to control the state of the switch module 20 (on or off) based on the control signal , so as to control the power supply state of the output load 300 by the power module 200 .

The control system 100 of the embodiment of the present application is a system for controlling the power supply module 200 to supply power to the output load 300 . The control system 100 can be used in the field of electric vehicles, for example, a battery clamp control system.

The output load 300 may be a capacitive load, and the capacitive load may include any one or any combination of a car battery (also referred to simply as: a car battery), a super capacitor, and a lithium battery. Car batteries, also known as car batteries. Car batteries can include conventional lead-acid batteries. When the capacitive load is reversed, it will cause damage to the current loop where the capacitive load is located (for example, burn out the components in the loop, cause damage to the internal battery pack of the emergency start power supply, etc.).

The power module 200 may be a module or component that provides power. For example, the power module 200 may be an internal battery pack of an emergency start power supply of a car, may also be a supercapacitor, or may be a combined product of a supercapacitor and a battery. Emergency starting power supply, also known as car emergency starting power supply, is a multi-functional portable mobile power supply developed for users who travel by car. The emergency starting power supply can act as a backup power supply to start the car when the car battery is low or other reasons cannot start the car.

The emergency starting power supply may include a power module 200, and the power module 200 may be a lead-acid battery, or a lithium polymer battery (eg, a lithium battery). The emergency starting power supply can provide energy supplement for the car battery output, and can also be directly used for the energy output required for starting the car engine (engine).

The power supply module 200 of the emergency starting power supply may include a single or multiple battery packs to realize the functions of energy storage and transmission. Usually, the battery pack is charged through a DC-DC power converter to realize energy supplementation and storage; the power supply of each functional module circuit of the emergency start power supply and the output load 300 or the energy supply of the car battery can be provided by the battery pack.

The voltage sampling and protection chip of single or multiple batteries completes the voltage sampling of each battery and the entire battery pack and has related protection functions such as battery overcharge, overdischarge, overcurrent, and overtemperature protection; this type of battery voltage sampling And the protection chip can also realize information interaction and state monitoring function with the programmable control device, even through this kind of battery dedicated analog front end (Analog Front End, AFE) through the special algorithm to complete the power calculation of the battery pack (state of charge, SOC ) and battery health (state of health, SOC).

The car battery can provide a strong starting current to the starter (such as a car motor) to start the engine when the car starts the engine. After the engine of the car starts, it can drive the generator of the car to start, and the generator can supply power for all electrical equipment in the car except the starter (for example, the air conditioner in the car, the stereo, the cigarette lighter, the wiper, etc.). When the generator is overloaded, the car battery can also assist the generator to supply power to the electrical equipment. When the engine is idling, the car battery can also supply power to electrical equipment. The generator can also charge the car battery.

The electrical signal in this embodiment of the present application may include a level signal or a voltage signal.

In the control system of the embodiment of the present application, compared with the MCU that needs to be programmed, the control logic operation circuit only needs to perform a logic operation based on at least one electrical signal output by at least one monitoring module and then output a control signal, which can control the switch module. Turning on or off to control the power supply state of the power module to the output load can reduce the complexity of the control system design.

The closing and opening of the switch module 20 can be controlled by the control signal output by the control logic operation circuit 10 . When any cell or battery pack is in a normal working state, the control signal controls the switch module 20 to close; The switch module 20 is turned off.

Optionally, the at least one monitoring module includes a battery voltage monitoring module, a temperature monitoring module, an output current monitoring module, a load connection polarity identification module and a combination of one or more monitoring modules in the load voltage monitoring module.

The battery voltage monitoring module is used to monitor whether the voltage of the power module 200 is normal; the temperature monitoring module is used to monitor whether the temperature of the power module 200 is normal or whether the temperature of the switch module 20 is normal; the output current monitoring module is used to monitor the output load of the power module 200 Whether the discharge current output by 300 is normal; the load connection polarity identification module is used to identify whether the polarity of the output load 300 is connected; the load voltage monitoring module is used to monitor whether the voltage of the output load 300 is normal.

Please refer to FIG. 2 . FIG. 2 is a schematic structural diagram of another control system provided by an embodiment of the present application. As shown in Figure 2, in the case where at least one monitoring module includes a battery voltage monitoring module 40, a temperature monitoring module 50, an output current monitoring module 60, a load connection polarity identification module 70 and a load voltage monitoring module 80, the control logic The arithmetic circuit 10 includes at least one input terminal, and the at least one input terminal includes a first input terminal, a second input terminal, a third input terminal, a fourth input terminal and a fifth input terminal; the output terminal of the battery voltage monitoring module 40 Output a first electrical signal to the first input terminal, output a second electrical signal to the second input terminal from the output terminal of the temperature monitoring module 50, and output a second electrical signal to the second input terminal from the output terminal of the output current monitoring module 60 to the third The input terminal outputs a third electrical signal, the output terminal of the load connection polarity identification module 70 outputs a fourth electrical signal to the fourth input terminal, and the output terminal of the load voltage monitoring module 80 outputs a fourth electrical signal to the fifth input terminal. output the fifth electrical signal.

As shown in Figure 2, the first input terminal is connected to the output terminal of the battery voltage monitoring module 40, the second input terminal is connected to the output terminal of the temperature monitoring module 50, and the third input terminal is connected to the The output terminal of the output current monitoring module 60, the fourth input terminal is connected to the output terminal of the load connection polarity identification module 70, and the fifth input terminal is connected to the output terminal of the load voltage monitoring module; the first The output terminal is connected to the control terminal of the switch module 20 , the input terminal of the switch module 20 is connected to the positive pole of the power supply module 200 , and the output terminal of the switch module 20 is connected to the positive pole of the output load 300 .

The control system 100 can work in automatic output mode or forced output mode. In the automatic output mode, the control system can automatically control the switch module 20 to be turned on or off; in the forced output mode, the control system can control the switch module 20 to be turned on or off under the control of the user.

Optionally, when the control system 100 is in the automatic output mode, the battery voltage monitoring module 40 detects that the voltage of the power supply module 200 is in the first threshold interval, and the temperature monitoring module 50 detects that the The temperature of the power module 200 is in the second threshold range or the temperature of the switch module 20 is in the third threshold range, and the output current monitoring module 60 detects that the discharge current output by the power module 200 to the output load 300 is in the The fourth threshold interval, and the load connection polarity identification module 70 monitors the polarity of the output load 300 is directly connected, and the load voltage monitoring module 80 monitors that the absolute value of the voltage drop slope of the output load 300 is greater than the fifth In the case of a threshold value, the control logic operation circuit 10 outputs a conduction signal according to the first electrical signal, the second electrical signal, the third electrical signal, the fourth electrical signal and the fifth electrical signal. Wherein, the conduction signal is used to control the conduction of the switch module 20 .

Optionally, when the battery voltage monitoring module 40 detects that the voltage of the power module 200 is not within the first threshold interval, or the temperature monitoring module 50 detects that the temperature of the power module 200 is not In the second threshold interval or the temperature of the switch module 20 is not in the third threshold interval, or the output current monitoring module 60 detects that the discharge current output by the power module 200 to the output load 300 is not in the In the case of the fourth threshold interval, or the load connection polarity identification module 70 monitors the reverse polarity of the output load 300, or the load voltage monitoring module 80 monitors the voltage drop of the output load 300 When the absolute value of the slope is less than the fifth threshold value, the control logic operation circuit 10 according to the first electrical signal, the second electrical signal, the third electrical signal, the fourth electrical signal and the fifth electrical signal Output shutdown signal. Wherein, the turn-off signal is used to control the switch module 20 to turn off.

The control system 100 can monitor whether the polarity of the output load 300 is reversed through the load connection polarity identification module 70 .

The control system 100 can monitor the voltage information of the power module 200 through the battery voltage monitoring module 40 . It can be used to monitor whether the voltage of the power module 200 is within a preset threshold range, and if it exceeds the preset range, the switch module 20 is prohibited from being closed (that is, turned on), thereby cutting off the energy output of the power module 200 .

The control system 100 can monitor the temperature information of the power module 200 and the temperature information of the switch module 20 through the temperature monitoring module 50 .

The control system 100 can monitor the discharge current information output by the power module 200 to the output load 300 or the charging current information output by the output load 300 to the power module 200 through the output current monitoring module 60 .

The control system 100 can monitor the voltage information of the output load 300 through the load voltage monitoring module 80 .

The first threshold interval, the second threshold interval, the third threshold interval, the fourth threshold interval, and the fifth threshold can all be set in advance.

Among them, the battery voltage monitoring module, the temperature monitoring module, the output current monitoring module, the load connection polarity identification module and the load voltage monitoring module can output electrical signals according to the monitoring results. The electrical signal may include a logic high level or a logic low level. The control logic operation circuit can control the switch module 20 to be turned on or off according to the five electrical signals input from the five input terminals.

For the convenience of description, the subsequent control logic operation circuit controls the switch module 20 to be turned on only when five input terminals input a logic high level, and controls the switch module 20 to turn off when any of the five input terminals inputs a logic low level. . At this point, the control logic operation circuit can be understood as an AND gate with five inputs.

Compared with using an MCU that needs to be programmed, the control logic operation circuit only needs to perform logic operations based on at least one electrical signal output by at least one monitoring module and then output a control signal, which can control the switch module to be turned on or off, thereby controlling The power supply status of the power module to the output load can reduce the complexity of the control system design.

The switch module 20 may include any one of a power electronic switch, a relay, and a field effect transistor (Field Effect Transistor, FET). The field-effect transistor may include a metal-oxide-semiconductor field-effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET). The switch module 20 can be turned on at high level (conduction can also be referred to as closed), and turned off at low level. When the switch module 20 is turned on, the power module 200 is electrically connected to the output load 300 , and at this moment, the power module 200 can provide energy to the output load 300 . When the switch module 20 is turned off, the power module 200 is disconnected from the output load 300 . If the reverse polarity of the output load 300 is detected by the load connection polarity identification module 70, the control logic operation circuit 10 controls the output load 300 to be turned off to avoid damage to the entire control system.

When the capacity of the output load 300 is insufficient, the power module 200 can charge the output load 300 . When the car is started, the car generator can also charge the output load 300 , and when the power of the power module 200 is insufficient, the car generator can also charge the power module 200 . The car generator can charge the output load 300 and the power module 200 at the same time.

The output end of the switch module 20 can be connected to the positive pole of the output load 300 through the positive pole clip of the battery clip, and the negative pole of the power module 200 can be connected to the negative pole of the output load 300 through the negative pole clip of the battery clip.

The load connection polarity identification module 70 may include a comparator, a non-isolated device composed of a resistor and a capacitor, or an isolated device composed of an optocoupler. The function of the load connection polarity identification module 70 is to monitor whether the polarity of the electrical connection between the output terminal of the battery clip and the external car battery is correct, and if the polarity connection is wrong, the switch module 20 is prohibited from being closed.

A non-isolated device refers to a device without an isolated sensor, which can include an optocoupler.

The control system in the embodiment of the present application identifies the connection polarity of the output load through the load connection polarity identification module including non-isolated devices. Compared with the load connection polarity identification module using isolation devices, it can detect whether the output load is reversed in polarity faster. In the case of detecting the reversed polarity of the output load, the control logic operation circuit can quickly control the switch module shutdown, improving the safety and reliability of the control system.

The control system may include a power supply circuit that provides a stable power supply for all functional modules. For example, the power supply circuit can provide a power supply voltage Vcc of 5V for all functional modules.

The battery voltage monitoring module 40 can include a window comparator made of resistors, capacitors, and comparators. When the voltage of the power supply module 200 is within a preset reasonable range, the battery voltage monitoring module 40 can generate a logic high electrical signal connected to the control The input terminal of the logic operation circuit 10 is used as an input enable control signal for controlling the logic operation circuit 10; when the voltage of the power module 200 is not within the preset reasonable range, the battery voltage monitoring module 40 can generate a logic low power signal.

The temperature monitoring module 50 may include a temperature sensor, a resistor and a capacitor, and its function is to monitor whether the temperature of the switch module 20 or the power module 200 is normal. Energy output, so as to realize the abnormal temperature protection function.

The switch module 20 may include a switch driving circuit and an electronic switch. The function of the switch drive circuit is to provide the necessary drive current and voltage for the electronic switch, thereby controlling the state of the electronic switch to be turned on or off; the electronic switch can generally include any of power electronic switches, relays, and field effect transistors, and the relay can be Including electromagnetic relays, field effect transistors may include field effect transistor MOSFETs.

The output current monitoring module 60 may include a sampling resistor, an operational amplifier, and a capacitor, or may be composed of a unidirectional or bidirectional current sensor and corresponding filtering and amplifying circuits. The function of the output current monitoring module 60 is to monitor the discharge current when the power supply module 200 outputs the output load 300 and the charging current when the output load 300 carries out reverse charging to the power supply module 200 when the switch module 20 is in the closed state; Or if the charging current exceeds the preset safety threshold, the switch module 20 will be disconnected quickly, so as to play an over-current protection function.

The load voltage monitoring module 80 can obtain the slope of the voltage drop of the output load 300 (for example, a car battery), and then compare it with the set slope threshold and output it as a trigger signal to start the switch module 20 .

The function of the control logic operation circuit 10 is to perform logic operations on the output information of the above-mentioned battery voltage monitoring module 40, temperature monitoring module 50, output current monitoring module 60, load connection polarity identification module 70 and load voltage monitoring module 80, and finally generate a The control signal is connected to the switch drive circuit, and the control signal can control the switch module 20 to be turned on and off.

The control logic operation circuit 10 can also complete the setting of the turn-on and turn-off time of the output of the switch module 20 each time through the corresponding sequential circuit. In the embodiment of the present application, the protection and control functions of the control system 100 can be completed by using separation devices, operational amplifiers, comparators, and logic gate operations.

Optionally, as shown in FIG. 3 , the control system 100 may also include a key input unit 90;

When the control system 100 is in the forced output mode, the battery voltage monitoring module 40 detects that the voltage of the power module 200 is in the first threshold interval, and the temperature monitoring module 50 detects that the voltage of the power module 200 is The temperature is in the second threshold interval or the temperature of the switch module 20 is in the third threshold interval, and the output current monitoring module 60 detects that the discharge current output by the power module 200 to the output load 300 is in the fourth threshold interval , and when the load connection polarity identification module 70 monitors the polarity of the output load 300 is directly connected, if the control system 100 receives a user instruction input through the key input unit 90, the control logic operation The circuit 10 outputs the conducting signal within a preset time period according to the first electrical signal, the second electrical signal, the third electrical signal and the fourth electrical signal.

When the battery voltage monitoring module detects that the voltage of the power module 200 is not in the first threshold interval, or the temperature monitoring module detects that the temperature of the power module 200 is not in the second threshold interval, or When the temperature of the switch module 20 is not in the third threshold interval, or when the output current monitoring module detects that the discharge current output by the power module 200 to the output load 300 is not in the fourth threshold interval , or when the load connection polarity identification module monitors the reverse polarity of the output load 300, the control logic operation circuit 10 according to the first electrical signal, the second electrical signal, the first The third electrical signal and the fourth electrical signal output the shutdown signal.

Wherein, the key input unit is generally composed of mechanical physical keys or touch keys, and realizes responding to user instructions.

Optionally, the control system 100 may also include a state output unit, which is used to output warning information when the control logic operation circuit outputs the shutdown signal.

The state output unit may include an LED indicator and a buzzer for indicating the output state of the control system 100 .

Optionally, the control system 100 can also include a communication interface circuit, which can complete the communication of battery and temperature related information, standby or enable output control and working status between the control system 100 and the power module 200 of the emergency start power supply to read.

The working principle of the control logic operation circuit of the control system in the embodiment of the present application is as follows.

After the user electrically connects the two input connection ports of the battery clip to the positive pole and the negative pole of the power module 200, the power supply circuits of each module unit of the control system start to work normally, and start to supply power to each functional module unit (for example, control logic) in the control system. Operation circuit 10, switch module 20, switch drive circuit, battery voltage monitoring module 40, temperature monitoring module 50, output current monitoring module 60, load connection polarity identification module 70 and load voltage monitoring module 80) supply power.

The battery voltage monitoring module 40 generates an electrical signal as the first input enable signal of the control logic operation circuit 10 through the sampling and comparison circuit. If the voltage of the power supply module 200 is within a preset reasonable range, the battery voltage monitoring module 40 outputs The electrical signal is a logic high level, otherwise it is a logic low level.

When the user electrically connects the two output connection ports of the battery clip to the positive pole and the negative pole of the output load 300 (for example, a car battery), the load connection polarity identification module 70 first checks the polarity of the electrical connection and generates an electrical signal As the fourth input enabling signal of the control logic operation circuit 10, if the polarity connection is correct, the output signal of the load connection polarity identification module 70 is logic high level, otherwise it is logic low level.

The temperature monitoring module 50 monitors whether the temperature of the switch module 20 or the temperature of the power supply module 200 is within a reasonable range and generates an electric signal as the second input enabling signal of the control logic operation circuit 10; if the temperature value is within the normal setting range Inside, the temperature monitoring module 50 will generate a logic high level, otherwise it will be a logic low level.

The output current monitoring module 60 monitors whether the discharge current when the power module 200 outputs to the output load 300 (for example, an external car battery) or the charging current when the power module 200 is charged by external energy is within a reasonable range and generates a The electrical signal is used as the third input enable signal of the control logic operation circuit 10; if the current value during charging or discharging is within the normal setting range, the output current monitoring module 60 will generate a logic high level, otherwise it will be a logic low level level.

The load voltage monitoring module 80 can obtain the slope of the voltage drop of the output load 300 (for example, an external car battery), then compare it with the set slope threshold and generate an electrical signal as the fifth input of the control logic operation circuit 10 to enable signal; if the negative slope value of the external car battery voltage drop is less than a preset slope threshold or the absolute value of the slope of the external car battery voltage drop is greater than a preset slope absolute value, the load voltage monitoring module 80 will generate a logic High, logic low otherwise.

In the automatic output mode, when the first, second, third, fourth, and fifth input enable signals mentioned above are all in the state of logic high level, the switch module 20 immediately enters the closed state, and the power module 200 starts to output the output load 300 (external car battery); at the same time, the internal timer circuit starts to start timing, and the maximum time for each start of output is limited to, for example, 5 seconds.

When any one of the above-mentioned five input enable signals changes to a logic low level, the switch module 20 immediately enters the off state, cutting off the output circuit of the power module 200; and the state output unit prompts a corresponding warning function.

In the forced output mode, when the user presses the button once and when the first, second, third, and fourth input enable signals mentioned above are all in the state of logic high level, The switch module 20 immediately enters the closed state, and the power module 200 starts to output the output load 300 (external car battery); at the same time, the internal timer circuit starts to start timing, and the maximum time for each startup output is limited to, for example, 30 seconds .

When any of the above-mentioned four input enable signals becomes low level, the switch module 20 immediately enters the off state, cutting off the output circuit of the power module 200; and the state output unit prompts a corresponding warning Function.

Please refer to FIG. 4 . FIG. 4 is a schematic structural diagram of a load voltage monitoring module provided by an embodiment of the present application. As shown in FIG. 4, the load voltage monitoring module 80 includes a switch unit 81, a voltage follower 82, a differential amplifier circuit 83, a comparison circuit 84, a first delay circuit 85, and a second delay circuit 86;

The input end of the switch unit 81 is connected to the positive pole of the output load 300, the first output end of the switch unit 81 is connected to the first input end of the voltage follower 82, and the second output end of the switch unit 81 The second input end of the voltage follower 82 is connected, the first output end of the voltage follower 82 is connected to the first differential input end of the differential amplifier circuit 83, and the second output end of the voltage follower 82 is connected to The second differential input terminal of the differential amplifier circuit 83, the output terminal of the differential amplifier circuit 83 is connected to the first input terminal of the comparison circuit 84, and the second input terminal of the comparison circuit 84 is connected to a reference voltage, so The output end of the comparison circuit 84 is connected to the input end of the first delay circuit 85 and the input end of the second delay circuit 86, and the output end of the first delay circuit 85 is connected to the switch unit 81. A control terminal, the output terminal of the second delay circuit 86 is connected to the fifth input terminal of the control logic operation circuit 10;

When the switch unit 81 is turned on, the switch unit 81 outputs the voltage signal of the output load 300 to the voltage follower, and the voltage follower 82 outputs the voltage signal to the differential amplifier circuit 83 The first differential input terminal and the second differential input terminal, the first differential input terminal is used to input the transient signal of the voltage signal, and the second differential input terminal is used to input the steady-state signal of the voltage signal , the differential amplifier circuit 83 is used to amplify the difference between the transient signal and the steady-state signal and output the difference to the comparison circuit 84, when the difference is greater than the reference voltage, The output terminal of the comparison circuit 84 outputs a pulse signal to the first time delay circuit 85 and the second time delay circuit 86, and the first time delay circuit 85 is used to send the pulse signal to the switch under the control of the pulse signal. The unit 81 outputs a first delay signal, the first delay signal controls the switch unit 81 to remain in the off state within the first duration, and the second delay circuit 86 is used to control the pulse signal under the control of the pulse signal Outputting a second delay signal to the logic operation circuit, the second delay signal is used to control the output terminal of the load voltage monitoring module to output the fifth electrical signal to the fifth input terminal within a second duration , the fifth electrical signal is one of the conduction conditions of the switch module 20 .

Please refer to FIG. 5 . FIG. 5 is a schematic structural diagram of a load voltage monitoring module provided in an embodiment of the present application. As shown in FIG. 5, the switch unit 81 includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1, a first diode D1, a A switching tube Q1, a second switching tube Q2 and a NOT gate U1;

The first end of the first resistor R1 is connected to the output end of the switch module 20, the positive pole of the output load 300, the first end of the second resistor R2, the first end of the third resistor R3 and The first terminal of the first switch tube Q1, the second terminal of the first resistor R1 is connected to the first terminal of the first capacitor C1, and the second terminal of the third resistor R3 is connected to the first switch The control end of the tube Q1 and the first end of the second switch tube Q2, the second end of the first switch tube Q1 is connected to the first end of the fourth resistor R4 and the first end of the first diode D1 Negative electrode, the anode of the first diode D1 is connected to the second end of the fourth resistor R4 and the output end of the switch unit 81, and the control end of the second switching transistor Q2 is connected to the fifth resistor R5 The first terminal of the first capacitor C1 and the output terminal of the NOT gate U1, the input terminal of the NOT gate U1 is connected to the output terminal of the first delay circuit 85, the second terminal of the first capacitor C1, the second The second end of the resistor R2 and the second end of the second switching transistor Q2 are grounded.

Optionally, as shown in FIG. 5, the voltage follower 82 includes a first operational amplifier X1, a second operational amplifier X2, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a Ten resistors R10, eleventh resistors R11 and second capacitors C2;

The first end of the sixth resistor R6 is connected to the second end of the fourth resistor R4, the first end of the seventh resistor R7 and the first end of the eighth resistor R8, and the sixth resistor R6 The second terminal of the first operational amplifier X1 is connected to the non-inverting input terminal of the first operational amplifier X1, and the inverting input terminal of the first operational amplifier X1 is connected to the output terminal of the first operational amplifier X1 through the tenth resistor R10, so The second end of the eighth resistor R8 is connected to the first end of the ninth resistor R9 and the first end of the second capacitor C2, and the second end of the ninth resistor R9 is connected to the second operational amplifier X2 The non-inverting input terminal of the second operational amplifier X2 is connected to the output terminal of the second operational amplifier X2 through the eleventh resistor R11, the second terminal of the seventh resistor R7, the The second end of the second capacitor C2 is grounded.

Optionally, as shown in FIG. 5, the differential amplifier circuit 83 includes a third operational amplifier X3, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, and a fifteenth resistor R15;

The first end of the twelfth resistor R12 is connected to the output end of the first operational amplifier X1, and the second end of the twelfth resistor R12 is connected to the first end of the fourteenth resistor R14 and the first The inverting input terminal of the third operational amplifier X3, the second terminal of the fourteenth resistor R14 is connected to the output terminal of the third operational amplifier X3, and the first terminal of the thirteenth resistor R13 is connected to the second operational amplifier The output end of the amplifier X2 and the first end of the fifteenth resistor R15, the second end of the thirteenth resistor R13 is connected to the non-inverting input end of the third operational amplifier X3, the fifteenth resistor R15 The second end is grounded.

Optionally, as shown in FIG. 5, the comparison circuit 84 includes a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor Resistor R21, third capacitor C3, fourth capacitor C4, fifth capacitor C5, second diode D2 and the fourth operational amplifier X4;

The first end of the sixteenth resistor R16 is connected to the output end of the third operational amplifier X3, and the second end of the sixteenth resistor R16 is connected to the first end of the third capacitor C3 and the fourth The non-inverting input terminal of the operational amplifier X4, the first terminal of the seventeenth resistor R17 is connected to the first terminal of the fourth capacitor C4, the first terminal of the eighteenth resistor R18 and the fourth operational amplifier X4 The inverting input terminal of the eighteenth resistor R18 is connected to the power supply terminal of the fourth operational amplifier X4 and the supply voltage, and the output terminal of the fourth operational amplifier X4 is connected to the fifth capacitor C5. The first end, the first end of the nineteenth resistor R19 and the cathode of the second diode D2, the second end of the nineteenth resistor R19 is connected to the anode of the second diode D2 and The first end of the twenty-first resistor R21, the second end of the fifth capacitor C5 are connected to the first end of the twentieth resistor R20, the second end of the third capacitor C3, the second end of the fifth capacitor C5 The second end of the seventeenth resistor R17, the second end of the fourth capacitor C4, the second end of the twentieth resistor R20, and the second end of the twenty-first resistor R21 are grounded.

Optionally, as shown in FIG. 5, the first delay circuit 85 includes a twenty-second resistor R22, a twenty-third resistor R23, a twenty-fourth resistor R24, a twenty-fifth resistor R25, a sixth capacitor C6, the seventh capacitor C7, the third switching tube Q3 and the fourth switching tube Q4;

The first end of the twenty-second resistor R22 is connected to the second end of the nineteenth resistor R19 and the first end of the sixth capacitor C6, and the second end of the twenty-second resistor R22 is connected to the The control terminal of the third switching tube Q3, the first terminal of the third switching tube Q3 is connected to the first terminal of the twenty-third resistor R23 and the control terminal of the fourth switching tube Q4, the second The second end of the thirteenth resistor R23 is connected to the first end of the fourth switching tube Q4 and the supply voltage, and the second end of the fourth switching tube Q4 is connected to the first end of the twenty-fourth resistor R24 , the second end of the twenty-fourth resistor R24 is connected to the first end of the twenty-fifth resistor R25, the first end of the seventh capacitor C7 and the input end of the NOT gate U1, the first The second end of the sixth capacitor C6, the second end of the third switching transistor Q3, the second end of the twenty-fifth resistor R25 and the second end of the seventh capacitor C7 are grounded.

Optionally, as shown in FIG. 5, the second delay circuit 86 includes a twenty-sixth resistor R26, a twenty-seventh resistor R27, a twenty-eighth resistor R28, a twenty-ninth resistor R29, an eighth capacitor C8, the fifth switching tube Q5, the sixth switching tube Q6 and the buffer U2;

The first end of the twenty-sixth resistor R26 is connected to the second end of the nineteenth resistor R19, and the second end of the twenty-sixth resistor R26 is connected to the control end of the fifth switching transistor Q5, so The first terminal of the fifth switch tube Q5 is connected to the first terminal of the twenty-seventh resistor R27 and the control terminal of the sixth switch tube Q6, and the second terminal of the twenty-seventh resistor R27 is connected to the The first end of the sixth switching transistor Q6 is connected to the supply voltage, the second end of the sixth switching transistor Q6 is connected to the first end of the twenty-eighth resistor R28, and the second end of the twenty-eighth resistor R28 The two ends are connected to the first end of the twenty-ninth resistor R29, the first end of the eighth capacitor C8, and the input end of the buffer U2, and the output end of the buffer U2 is connected to the control logic operation The fifth input terminal of the circuit 10, the second terminal of the fifth switching transistor Q5, the second terminal of the twenty-ninth resistor R29 and the second terminal of the eighth capacitor C8 are grounded.

The working principle of the load voltage monitoring module 80 is introduced below.

When the voltage of the output load 300 (external car battery) (EX_BAT_DROP shown in Figure 5) has a sudden drop slope, the signal first passes through the NOT gate U1, the resistor R5, the switch Q1, the resistors R3, R4, the switch The switch unit 81 composed of Q2, the output of the switch unit 81 is then divided into two branches, one branch is connected to the non-inverting input terminal of the operational amplifier X1, and the other branch is connected to the delay function unit formed by the resistor R8 and the capacitor C2. The non-inverting input terminal of operational amplifier X2, operational amplifiers X1 and X2 form a voltage follower 82, and its output is respectively connected to two differential input terminals of a differential amplifier circuit composed of resistors R12, R13, R14, R15 and operational amplifier X3. The differential amplification factor of the embodiment of the present application can be set at 8.06 times; the output of the differential amplifier formed by the operational amplifier X3 is connected to a comparison circuit composed of resistors R17, R18 and operational amplifier X4 to generate a narrow pulse signal Trig1, and the signal Trig1 has two One of them is used to trigger and start the first delay circuit 85 composed of resistors R22, R23, R24, R25, capacitor C7, switch tube Q3, Q4, and the duration of the low level output by the first delay circuit 85 It is Tdelay1, and its output signal Thibit signal is in the low level duration of Tdelay1, controls the switch unit 81 composed of the NOT gate U1, the resistor R5, the switch tube Q1, the resistors R3, R4, and the switch tube Q2 to keep the off state, prohibiting the external The vehicle battery voltage slope change signal is transmitted to the load voltage monitoring module 80 . Another function of the signal Trig1 triggers the second delay circuit 86 composed of resistors R26, R27, R28, R29, capacitor C8, switch tubes Q5, Q6, and the duration of the high level output by the second delay circuit 86 is Tdelay2 , the output signal Ton is connected to the control logic operation circuit 10 through the output of the buffer U2 and used as the fifth input enable control signal, and controls the duration of the closed state of the switch module 20 during the duration of the high level of Tdelay2.

Wherein, the simulation result waveform of the load voltage monitoring module 80 can be referred to FIG. 6 , and the signal simulation waveform diagram of the simulated vehicle periodic start can be referred to FIG. 7 .

Please refer to FIG. 8 . FIG. 8 is a schematic structural diagram of an emergency starting power supply provided by an embodiment of the present application. As shown in FIG. 8 , the emergency starting power supply 400 includes a control system 100 and a power supply module 200 . Wherein, the control system 100 can refer to the description of FIG. 1 to FIG. 3 . The power supply module 200 can be an internal battery pack (a single-cell or multi-cell battery pack) of an emergency start-up power supply, or a supercapacitor, or a combined product of a supercapacitor and a battery. The internal battery pack can be a lead-acid battery or a lithium polymer type battery (eg, a lithium battery).

Please refer to FIG. 9 . FIG. 9 is a schematic structural diagram of a battery clip provided by an embodiment of the present application. As shown in FIG. 9 , the battery clip 500 includes a control system 100 . Wherein, the control system 100 can refer to the description of FIG. 1 to FIG. 3 . The positive clip of the battery clip can be connected to the positive pole of the output load 300 , and the negative pole clip of the battery clip can be connected to the negative pole of the output load 300 .

A control system, an emergency start power supply, and a battery clip provided in the embodiments of the present application have been described above in detail. In this paper, specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the above embodiments are only for To help understand the method and its core idea of this application; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific implementation and application scope. In summary, the content of this specification It should not be construed as a limitation of the application.

Claims

A control system, characterized in that it includes a control logic operation circuit, a switch module, and at least one monitoring module;

The control logic operation circuit is connected to the at least one monitoring module and the switch module; the switch module is also connected to the power supply module and the output load respectively;

The control logic operation circuit is used to output a control signal after performing a logic operation according to at least one electrical signal input by the at least one monitoring module;

The switch module is used to control the conduction state between the power module and the output load based on the control signal, so as to control the power supply state of the power module to the output load.
The control system according to claim 1, wherein the control signal includes a turn-on signal or a turn-off signal; when the control signal includes a turn-on signal, the switch module is configured to An on signal controls the power module to supply power to the output load; when the control signal includes an off signal, the switch module is used to cut off the connection between the power module and the output load based on the off signal loop between.
The control system according to claim 1, wherein the at least one monitoring module includes one or more of a battery voltage monitoring module, a temperature monitoring module, an output current monitoring module, a load connection polarity identification module, and a load voltage monitoring module. A combination of multiple monitoring modules.
The control system according to claim 3, wherein when at least one monitoring module includes a battery voltage monitoring module, a temperature monitoring module, an output current monitoring module, a load connection polarity identification module and a load voltage monitoring module, the The logic operation circuit includes at least one input terminal, and the at least one input terminal includes a first input terminal, a second input terminal, a third input terminal, a fourth input terminal and a fifth input terminal; the output of the battery voltage monitoring module terminal outputs a first electrical signal to the first input terminal, the output terminal of the temperature monitoring module outputs a second electrical signal to the second input terminal, and the output terminal of the output current monitoring module supplies the third input terminal terminal outputs a third electrical signal, the output terminal of the load connection polarity identification module outputs a fourth electrical signal to the fourth input terminal, and the output terminal of the load voltage monitoring module outputs a fifth electrical signal to the fifth input terminal. electric signal.
The control system according to claim 4, wherein when the control system is in the automatic output mode, the battery voltage monitoring module detects that the voltage of the power module is in the first threshold interval, and the temperature The monitoring module monitors that the temperature of the power module is in the second threshold range or the temperature of the switch module is in the third threshold range, and the output current monitoring module monitors the discharge current output by the power module to the output load It is in the fourth threshold interval, and the load connection polarity identification module monitors the polarity of the output load is directly connected, and the load voltage monitoring module monitors that the absolute value of the voltage drop slope of the output load is greater than the fifth threshold Next, the control logic operation circuit outputs the conduction signal according to the first electrical signal, the second electrical signal, the third electrical signal, the fourth electrical signal and the fifth electrical signal.
The control system according to claim 5, wherein when the battery voltage monitoring module detects that the voltage of the power supply module is not in the first threshold interval, or the temperature monitoring module detects that the When the temperature of the power module is not in the second threshold interval or the temperature of the switch module is not in the third threshold interval, or the output current monitoring module monitors the discharge current output by the power module to the output load If it is not in the fourth threshold interval, or if the load connection polarity identification module monitors the reverse polarity of the output load, or if the load voltage monitoring module monitors the voltage drop slope of the output load When the absolute value is less than the fifth threshold, the control logic operation circuit according to the first electrical signal, the second electrical signal, the third electrical signal, the fourth electrical signal and the fifth electrical signal signal output the shutdown signal.
The control system according to claim 4, wherein the control system further comprises a key input unit, and when the control system is in the forced output mode, the battery voltage monitoring module monitors the voltage of the power module It is in the first threshold interval, and the temperature monitoring module detects that the temperature of the power supply module is in the second threshold interval or the temperature of the switch module is in the third threshold interval, and the output current monitoring module monitors that the power supply When the discharge current output by the module to the output load is in the fourth threshold interval, and the load connection polarity identification module monitors the polarity of the output load to be directly connected, if the control system receives input via the key The user instruction input by the unit, the control logic operation circuit outputs the conduction within a preset time period according to the first electrical signal, the second electrical signal, the third electrical signal and the fourth electrical signal Signal.
The control system according to claim 7, characterized in that, when the battery voltage monitoring module monitors that the voltage of the power supply module is not in the first threshold interval, or the temperature monitoring module monitors that the When the temperature of the power module is not in the second threshold interval or the temperature of the switch module is not in the third threshold interval, or the output current monitoring module monitors the discharge current output by the power module to the output load If it is not in the fourth threshold interval, or if the load connection polarity identification module monitors the polarity reverse connection of the output load, the control logic operation circuit according to the first electrical signal, the second The second electrical signal, the third electrical signal and the fourth electrical signal output the shutdown signal.
The control system according to claim 6 or 8, characterized in that, the control system further comprises a state output unit, and the state output unit is configured to, when the control logic operation circuit outputs the shutdown signal, Output a warning message.
The control system according to claim 1, wherein the switch module comprises any one of a power electronic switch, a relay, and a field effect transistor.
An emergency starting power supply, characterized by comprising the control system described in any one of claims 1 to 10.
A battery clamp, characterized by comprising the control system according to any one of claims 1-10.