CN213846257U

CN213846257U - Intelligent control system, emergency starting power supply and intelligent storage battery clamp

Info

Publication number: CN213846257U
Application number: CN202022010036.1U
Authority: CN
Inventors: 雷云; 张智锋; 全和清; 程铭
Original assignee: Shenzhen Carku Technology Co Ltd
Current assignee: Shenzhen Carku Technology Co Ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-07-30
Anticipated expiration: 2030-09-14

Abstract

The embodiment of the application discloses an intelligent control system, an emergency starting power supply and an intelligent storage battery clamp, wherein the intelligent control system comprises a microcontroller MCU, a voltage detection module, a switch control module, an emergency starting power supply, a capacitive load and a power output port; the power output port is electrically connected with the capacitive load; the first end of the switch control module is connected with an internal battery pack of the emergency starting power supply, and the second end of the switch control module is electrically connected with the capacitive load through the power supply output port; the control end of the switch control module receives a control signal from the MCU; the voltage detection module is used for identifying the connection polarity of the capacitive load and comprises a non-isolation device; and the MCU is used for controlling the switch control module to be in a disconnected state under the condition that the voltage detection module detects that the polarity of the capacitive load is reversely connected. The embodiment of the application can detect whether the polarity of the capacitive load is reversed or not more quickly, and the safety and the reliability of the intelligent control system are improved.

Description

Intelligent control system, emergency starting power supply and intelligent storage battery clamp

Technical Field

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

Background

At present, the design principle of polarity detection when intelligent battery clamp and emergency starting power supply carry out electrical connection with car battery on the market is: whether the polarity connection is correct is judged by a Microcontroller (MCU) based on an output signal of a photoelectric isolation device such as a photoelectric coupler as a key detection element.

The photoelectric isolation device is sensitive to the environment, has slow response time, short service life and is easy to lose efficacy, so that a signal transmitted to the MCU by the photoelectric isolation device has relatively long time delay or even can not transmit a normal output signal, when an external automobile storage battery is abnormally connected (for example, polarity reversal connection), because the switching speed of the photoelectric isolation sensor is slow or the device fails, the MCU can not timely respond or can not respond to the condition of input due to abnormal connection or polarity reversal connection to disconnect components (for example, a power switch unit) in an output loop, so that a circuit or a battery in a system is easily damaged, and even a serious condition can cause a safety accident.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an intelligent control system, emergency starting power supply and intelligent storage battery presss from both sides, can connect or polarity reversal under the condition of input fast disconnection components and parts in the output circuit unusually, improves control system's security and reliability.

In a first aspect of the embodiments of the present application, an intelligent control system is provided, which includes a microcontroller MCU, a voltage detection module, a switch control module, an emergency start power supply, a capacitive load, and a power output port;

the power output port is electrically connected with the capacitive load;

the first end of the switch control module is connected with the internal battery pack of the emergency starting power supply, and the second end of the switch control module is electrically connected with the capacitive load through the power supply output port; the control end of the switch control module receives a control signal from the MCU;

the voltage detection module is used for identifying the connection polarity of the capacitive load and comprises a non-isolation device;

and the MCU is used for controlling the switch control module to be in a disconnected state under the condition that the voltage detection module detects that the polarity of the capacitive load is reversely connected.

Optionally, the voltage detection module is further configured to detect a voltage of the capacitive load.

Optionally, the voltage detection module includes a voltage proportional operation circuit and a filter circuit; the voltage proportion operation circuit comprises a first resistor, a second resistor, a third resistor and a first diode, and the filter circuit comprises a fourth resistor and a first capacitor;

a first end of the first resistor is connected with a power supply end, a first end of the third resistor is connected with a first end of the capacitive load, a second end of the first resistor is connected with a first end of the second resistor, a second end of the third resistor, a first end of a fourth resistor and a negative electrode of the first diode, and a second end of the fourth resistor is connected with a first end of the first capacitor and a first input end of the MCU; a second end of the second resistor, an anode of the first diode and a second end of the first capacitor are grounded;

the MCU is used for receiving an analog voltage signal through a first input end of the MCU;

the MCU is further used for determining that the polarity of the capacitive load is reversely connected and controlling the switch control module to be in a disconnected state under the condition that the voltage value corresponding to the analog voltage signal is smaller than the lower limit value of the first voltage interval;

and the MCU is also used for determining the voltage of the capacitive load according to the analog voltage signal.

Optionally, the MCU is further configured to determine that the polarity of the capacitive load is positive when the voltage value corresponding to the analog voltage signal is greater than the upper limit value of the first voltage interval.

Optionally, the MCU is further configured to control the switch control module to be in a conducting state if it is detected that a falling slope of a voltage value corresponding to the analog voltage signal is greater than a preset slope threshold value under the condition that the polarity of the capacitive load is positive.

Optionally, the MCU is further configured to determine that the positive electrode and the negative electrode of the capacitive load are short-circuited when the voltage value corresponding to the analog voltage signal is within the first voltage interval, and control the switch control module to be in a disconnected state.

Optionally, the MCU is further configured to determine that the power output port and the capacitive load are electrically connected abnormally when the voltage value corresponding to the analog voltage signal is in a second voltage interval, where the first voltage interval and the second voltage interval do not intersect with each other.

Optionally, the voltage detection module includes a polarity detection circuit and a voltage detection circuit; the polarity detection circuit comprises a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a second capacitor and a second diode, and the voltage detection circuit comprises a tenth resistor, an eleventh resistor, a twelfth resistor, a third capacitor and a third diode;

a first end of the fifth resistor is connected to a power source terminal, a second end of the fifth resistor is connected to a first end of the sixth resistor, a first end of the eighth resistor and a first end of the ninth resistor, a second end of the eighth resistor is connected to a first end of the second capacitor and an output terminal of the polarity detection circuit, a second end of the ninth resistor is connected to a first end of the seventh resistor and a first end of the second diode, a second end of the second diode is connected to a first end of the capacitive load and a first end of the eleventh resistor, a second end of the eleventh resistor is connected to a first end of the tenth resistor and a first end of the twelfth resistor, a second end of the twelfth resistor is connected to a first end of the third capacitor and an output terminal of the voltage detection circuit, a second end of the sixth resistor, a second end of the seventh resistor, a first end of the polarity detection circuit, and a second end of the polarity detection circuit, A second end of the tenth resistor, a second end of the second capacitor and a second end of the third capacitor are grounded;

the MCU is used for receiving a polarity voltage signal output by the output end of the polarity detection circuit through a second input end of the MCU;

and the MCU is further used for determining that the polarity of the capacitive load is reversely connected and controlling the switch control module to be in a disconnected state under the condition that the voltage value corresponding to the polarity voltage signal is in a third voltage interval.

Optionally, the MCU is further configured to determine that the polarity of the capacitive load is positive when the voltage value corresponding to the polarity voltage signal is within a fourth voltage interval, where the third voltage interval and the fourth voltage interval do not intersect each other.

Optionally, the MCU is further configured to receive a capacitive load voltage signal output by the output terminal of the voltage detection circuit through a third input terminal of the MCU under the condition that the polarity of the capacitive load is positive, and determine the voltage of the capacitive load according to the capacitive load voltage signal.

Optionally, the voltage detection module includes a first switching tube, a second switching tube, a third switching tube, a fourth switching tube, and a load resistor;

the first end of the first switch tube and the first end of the fourth switch tube are connected with the first end of the capacitive load, the first end of the second switch tube and the first end of the third switch tube are connected with the second end of the capacitive load, the second end of the first switch tube and the second end of the second switch tube are connected with the anode of the internal battery pack, the second end of the third switch tube and the second end of the fourth switch tube are connected with the first end of the load resistor, and the second end of the load resistor is connected with the cathode of the internal battery pack;

the MCU is further used for detecting a first current on the load resistor under the condition that the first switching tube and the third switching tube are conducted and the second switching tube and the fourth switching tube are disconnected;

the MCU is further used for detecting a second current on the load resistor under the condition that the first switching tube and the third switching tube are disconnected and the second switching tube and the fourth switching tube are connected;

the MCU is further used for determining that the polarity of the capacitive load is reversely connected under the condition that the first current is larger than the second current;

the MCU is further used for determining that the polarity of the capacitive load is positive under the condition that the first current is smaller than the second current.

Optionally, the voltage detection module further includes a fifth switching tube and a sixth switching tube;

the first end of the fifth switching tube is connected with the first end of the capacitive load, the second end of the fifth switching tube is connected with the anode of the internal battery pack, the first end of the sixth switching tube is connected with the second end of the capacitive load, and the second end of the sixth switching tube is connected with the cathode of the internal battery pack.

Optionally, the intelligent control system further includes a wake-up module, where the wake-up module is configured to send an interrupt signal to the MCU through an output end of the wake-up module when the voltage of the capacitive load is detected to be greater than a first threshold, where the interrupt signal is used to switch the MCU from a sleep state or a standby state to a normal operating state.

Optionally, the wake-up module includes a first voltage comparator, a second voltage comparator, a fourth diode, a fifth diode, and a thirteenth resistor;

the power supply end is connected with the power supply end of the first voltage comparator, the power supply end of the second voltage comparator and the first end of the thirteenth resistor, and the grounding end of the first voltage comparator and the grounding end of the second voltage comparator are grounded;

a non-inverting input end of the first voltage comparator is connected with a first reference voltage, a reverse input end of the first voltage comparator is connected with the analog voltage signal or the capacitive load voltage signal, an output end of the first voltage comparator is connected with a cathode of the fourth diode, and an anode of the fourth diode is connected with a second end of the thirteenth resistor, an anode of the fifth diode and an output end of the wake-up module;

the non-inverting input end of the second voltage comparator is connected with the analog voltage signal or the capacitive load voltage signal, the inverting input end of the second voltage comparator is connected with a second reference voltage, and the output end of the second voltage comparator is connected with the negative electrode of the fifth diode.

Optionally, the intelligent control system further includes a regulated power supply module, the regulated power supply module includes a sixth diode, a seventh diode, and a low dropout regulator LDO, an anode of the sixth diode is connected to an anode of the internal battery pack, a cathode of the sixth diode is connected to a cathode of the seventh diode and an input end of the LDO, an anode of the seventh diode is connected to an anode of the capacitive load, and an output end of the LDO is the power supply end.

Optionally, the intelligent control system further includes a key input module, and when the key input module receives a key activation signal, the key input module sends an interrupt signal to the MCU, where the interrupt signal is used to switch the MCU from a sleep state or a standby state to a normal operating state.

Optionally, the intelligent control system further includes a current detector, disposed between the power output port and the capacitive load, for detecting a discharge current when the internal battery pack discharges to the capacitive load;

under the condition that the discharge current is larger than an overcurrent threshold or a short-circuit threshold, the current detector sends an overcurrent protection signal or a short-circuit protection signal to the MCU;

and the MCU controls the switch control module to be in a disconnected state according to the overcurrent protection signal or the short-circuit protection signal.

Optionally, the intelligent control system further includes a bidirectional current detection sensor, which is disposed between the power output port and the capacitive load and is configured to detect that the internal battery pack is in a discharge state or a charge state;

under the condition that the internal battery pack is in a charging state, the bidirectional current detection sensor sends a charging protection signal to the MCU;

and the MCU controls the switch control module to be in a disconnected state according to the charging protection signal.

Optionally, the intelligent control system further includes a status indication module, where the status indication module is connected to the MCU to implement status indication of the intelligent control system, where the status indication includes a working status indication and an alarm prompt.

Optionally, the capacitive load includes any one or any combination of a storage battery, a super capacitor and a lithium battery. The battery may be a battery on a vehicle. In particular, the battery may comprise a lead acid battery.

In a second aspect of the embodiments of the present application, an emergency starting power supply is provided, which includes the microcontroller MCU described in the first aspect of the embodiments of the present application, a voltage detection module, a switch control module, and an internal battery pack;

the internal battery pack is electrically connected with a first end of the switch control module, and a second end of the switch control module is electrically connected with a capacitive load; the control end of the switch control module receives a control signal from the MCU;

In a third aspect of the embodiments of the present application, an intelligent battery clamp is provided, including the microcontroller MCU described in the first aspect of the embodiments of the present application, a voltage detection module, a switch control module, a power output port, and a power input port;

the power supply input port is electrically connected with an internal battery pack of the emergency starting power supply, and the power supply output port is electrically connected with the capacitive load;

a first end of the switch control module is electrically connected with the internal battery pack through the power input port, and a second end of the switch control module is electrically connected with the capacitive load through the power output port; the control end of the switch control module receives a control signal from the MCU;

The embodiment of the application provides an intelligent control system, which identifies the connection polarity of a capacitive load through a voltage detection module comprising a non-isolation device, and detects the voltage of the capacitive load. Compared with a voltage detection module adopting an isolation device, the polarity reverse connection of the capacitive load can be detected more quickly, and the MCU can control the switch control module to be in a disconnection state under the condition of detecting the polarity reverse connection of the capacitive load, so that components in an output loop can be disconnected quickly, and the safety and the reliability of a control system are improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

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

fig. 2 is a schematic structural diagram of a voltage detection module according to an embodiment of the present disclosure;

fig. 3 is a graph of simulation results of the automobile battery in different states according to the voltage detection module shown in fig. 2 provided in the embodiment of the present application;

fig. 4 is a schematic structural diagram of another voltage detection module provided in the embodiment of the present application;

FIG. 5 is a diagram of simulation results of the automobile battery in different states according to the voltage detection module shown in FIG. 4 according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of another voltage detection module provided in the embodiment of the present application;

FIG. 7 is a schematic structural diagram of another intelligent control system provided in the embodiments of the present application;

fig. 8 is a schematic structural diagram of a wake-up module according to an embodiment of the present disclosure;

fig. 9 is a schematic diagram of a simulation result of a wake-up circuit according to an embodiment of the present application

FIG. 10 is a schematic diagram of a voltage regulator module according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram of another intelligent control system provided in the embodiments of the present application;

FIG. 12 is a schematic diagram of an emergency starting power supply according to an embodiment of the present disclosure;

fig. 13 is a structural schematic diagram of an intelligent battery clamp according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are some, but not all embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive step based on the embodiments in the present application shall fall within the protection scope of the present application.

The terms "first," "second," and the like in the description and claims of the present application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference in the specification 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 specification. The appearances of the 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 explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

The embodiment of the application provides an intelligent control system, emergent start power and intelligent storage battery presss from both sides, compares with the voltage detection module that adopts isolating device, can be faster detect whether polarity reversal connects of capacitive load, under the condition that detects capacitive load polarity reversal, MCU can control switch control module is in the off-state, improves control system's security and reliability. The following are detailed below.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an intelligent control system according to an embodiment of the present disclosure. As shown in fig. 1, the intelligent control system described in this embodiment includes a microcontroller MCU10, a voltage detection module 20, a switch control module 30, an emergency start power supply 40, a capacitive load 50, and a power output port 60;

the power output port 60 is electrically connected to the capacitive load 50;

a first end of the switch control module 30 is connected to the internal battery 41 of the emergency starting power supply 40, and a second end of the switch control module 30 is electrically connected to the capacitive load 50 through the power output port 60; a control end of the switch control module 30 receives a control signal from the MCU 10;

the voltage detection module 20 is configured to identify a connection polarity of the capacitive load 50, where the voltage detection module 20 includes a non-isolation device;

the MCU10 is configured to control the switch control module 30 to be in an off state when the voltage detection module 20 detects that the capacitive load 50 is connected in a reverse polarity.

Optionally, the voltage detecting module 20 is further configured to detect a voltage of the capacitive load 50.

The intelligent control system in the embodiment of the present application is configured to detect whether the capacitive load 50 has a reverse polarity, and may also detect a voltage of the capacitive load 50.

Capacitive load 50 may include any one or any combination of an automotive battery (also referred to simply as an automotive battery), a super capacitor, a lithium battery. The automobile storage battery can also be called as an automobile storage battery. The automotive battery may comprise a conventional lead-acid battery. When the capacitive load is reversely connected, the current loop where the capacitive load is located may be damaged (for example, a component in the loop may be burned out, the internal battery pack 41 of the emergency starting power supply 40 may be damaged, and the like).

The vehicle battery can provide a strong starting current to a starter (e.g., a vehicle motor) when the vehicle starts the engine to start the engine. After the engine of the automobile is started, the generator of the automobile can be driven to start, and the generator can supply power for all electric equipment (such as an air conditioner, a sound system, a cigarette lighter, a windshield wiper and the like) in the automobile except for the starter. The vehicle battery may also assist the generator in supplying power to the consumer when the generator is overloaded. When the engine is at idle speed, the automobile battery can also supply power to the electric equipment. The generator may also charge the vehicle battery.

The switch control module 30 may be any one of a power electronic switch, a relay, and a Field Effect Transistor (FET). The Field Effect Transistor may comprise a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET). The switch control module 30 may be turned on at a high level and turned off at a low level. When the switch control module 30 is turned on, the internal battery pack 41 of the emergency starting power supply 40 is electrically connected to the capacitive load 50 through the power output port 60, and at this time, the internal battery pack 41 can supply power to the capacitive load 50. When the switch control module 30 is turned off, the internal battery pack 41 of the emergency starting power supply 40 is disconnected from the capacitive load 50. If the MCU10 detects the reverse connection of the capacitive load electrodes 50 through the voltage detection module 20, the switch control module 30 is controlled to be in the off state, so as to avoid the damage to the entire control system.

The emergency starting power supply 40, which may also be referred to as an automobile emergency starting power supply, is a multifunctional portable mobile power supply developed for users who drive cars and go out. The emergency starting power supply 40 can be used as a backup power supply to start the vehicle when the vehicle battery is short of power or the vehicle cannot be started for other reasons.

The emergency starting power source 40 may include an internal battery pack 41, and the internal battery pack 41 may be a lead-acid battery or a lithium polymer-based battery (e.g., a lithium battery). The emergency starting power supply 40 can provide energy supplement for the automobile storage battery output, and can also be directly used for the energy output required when an automobile engine (engine) is started.

The power output port 60 is electrically connected to the capacitive load 50, and the internal battery pack 41 can charge the capacitive load 50 through the power output port 60 when the capacitive load 50 is low in power. When the vehicle is started, the vehicle generator may charge the capacitive load 50, and when the internal battery pack 41 is short of electricity, the vehicle generator may charge the internal battery pack 41. The vehicle generator can simultaneously charge the capacitive load 50 and the internal battery pack 41.

The power output port 60 may correspond to the clamps of the battery clamp (including the positive and negative line clamps of the battery clamp).

A non-isolated device refers to a device without an isolated sensor, which may include an opto-coupler.

In the intelligent control system in the embodiment of the application, the connection polarity of the capacitive load is identified through the voltage detection module comprising the non-isolation device, and the voltage of the capacitive load is detected. Compared with a voltage detection module adopting an isolation device, the polarity reverse connection of the capacitive load can be detected more quickly, and the MCU can control the switch control module to be in a disconnection state under the condition of detecting the polarity reverse connection of the capacitive load, so that the safety and the reliability of a control system are improved.

The voltage detection module 20 may identify a connection polarity of the capacitive load 50, and may detect a voltage of the capacitive load 50.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a voltage detection module according to an embodiment of the present disclosure, and as shown in fig. 2, the voltage detection module 20 includes a voltage proportional operation circuit 21 and a filter circuit 22; the voltage proportional operation circuit 21 comprises a first resistor R1, a second resistor R2, a third resistor R3 and a first diode D1, and the filter circuit 22 comprises a fourth resistor R4 and a first capacitor C1;

a first end of the first resistor R1 is connected to a power supply terminal VDD, a first end of the third resistor R3 is connected to a first end of the capacitive load 50, a second end of the first resistor R1 is connected to a first end of the second resistor R2, a second end of the third resistor R3, a first end of the fourth resistor R4 and a negative electrode of the first diode D1, and a second end of the fourth resistor R4 is connected to a first end of the first capacitor C1 and a first input terminal of the MCU 10; a second end of the second resistor R2, an anode of the first diode D1 and a second end of the first capacitor C1 are grounded;

wherein, the voltage proportion operation circuit 21 formed by the R1, the R2, the R3 and the D2 and the low-pass filter circuit 22 formed by the R4 and the C1 jointly act to complete the polarity identification when the capacitive load 50 is connected with the power output port and the voltage detection of the capacitive load 50; capacitive load 50 in fig. 2 is described by way of example as an automotive battery (which may also be referred to simply as an automotive battery).

The MCU10, configured TO receive an analog voltage signal (EP _ VSN _ TO _ MCU _ AD shown in fig. 2) through a first input terminal of the MCU 10;

the MCU10 is further configured to determine that the capacitive load 50 is reversely connected in polarity and control the switch control module 30 to be in an off state when the voltage value corresponding to the analog voltage signal is smaller than the lower limit value of the first voltage interval;

the MCU10 receives the analog voltage signal EP _ VSN _ TO _ MCU _ AD through a first input port (a/D input port) of the MCU 10; the MCU10 judges whether the connection of the polarity of the car battery is correct and accurately obtains the voltage of the car battery based on the result of the analog-to-digital (a/D) conversion and mathematical operation. If the voltage value of the analog voltage signal EP _ VSN _ TO _ MCU _ AD after A/D conversion is smaller than the lower limit value of the first voltage interval, determining that the polarity of the capacitive load 50 is reversely connected; and if the voltage value of the analog voltage signal EP _ VSN _ TO _ MCU _ AD after a/D conversion is greater than the upper limit value of the first voltage interval, determining that the polarity of the capacitive load 50 is positive.

For example, the first voltage interval may be set to be 1-1.15V, the upper limit value of the first voltage interval is 1.15V, and the lower limit value of the first voltage interval is 1V. A narrower voltage interval is set to avoid misjudgment caused by lower detection errors.

Specifically, in the case that the MCU10 determines that the capacitive load 50 is connected in reverse polarity, the MCU10 sends a shutdown signal (e.g., SW _ Drive _ from _ MCU shown in fig. 2) to the driver U1, and the switch control module 30 is controlled to be in the off state by the driver U1. The driver U1 may be a DC-DC driver for driving the switch control module 30 in an off state or an on state. For example, if the SW _ Drive _ from _ MCU sent by the MCU10 to the driver U1 is a low level pulse, the driver U1 drives the switch control module 30 to be in an off state; if the SW _ Drive _ from _ MCU sent by the MCU10 to the driver U1 is a high level pulse, the driver U1 drives the switch control module 30 to be in a conducting state.

The MCU10 is further configured to determine the voltage of the capacitive load 50 according to the analog voltage signal.

In the embodiment of the present application, the magnitude of the analog voltage signal EP _ VSN _ TO _ MCU _ AD is proportional TO the voltage of the capacitive load 50, and the proportional coefficient is related TO R1, R2, and R3 of the voltage proportional operation circuit 21. The MCU10 can calculate the voltage of the capacitive load 50 according to the voltage value corresponding to the analog voltage signal and the scaling factor of the voltage scaling circuit 21.

Optionally, the MCU10 is further configured to determine that the polarity of the capacitive load 50 is positive when the voltage value corresponding to the analog voltage signal is greater than the upper limit value of the first voltage interval.

Optionally, the MCU10 is further configured to, under the condition that the polarity of the capacitive load 50 is positive, control the switch control module 30 to be in a conducting state if it is detected that a falling slope of a voltage value corresponding to the analog voltage signal is greater than a preset slope threshold.

In the embodiment of the present application, taking capacitive load 50 as an example of an automobile battery, under the scene of ignition of the automobile battery, when the automobile battery is ignited to start an automobile engine, the voltage of the automobile battery will drop rapidly, at this time, it can be detected that the falling slope of the voltage of the automobile battery is greater than a preset slope threshold value, at this time, MCU can control switch control module 30 to be in a conducting state, and the automobile battery can be charged through the battery pack of an emergency starting power supply.

Optionally, the MCU10 is further configured to determine that the positive electrode and the negative electrode of the capacitive load 50 are short-circuited when the voltage value corresponding to the analog voltage signal is in the first voltage interval, and control the switch control module 30 to be in an off state.

Optionally, the MCU10 is further configured to determine that the electrical connection between the power output port and the capacitive load 50 is abnormal when the voltage value corresponding to the analog voltage signal is in a second voltage interval, where the first voltage interval and the second voltage interval do not intersect with each other.

Wherein, the second voltage interval can be set to be 1.2-1.35V. Similarly, a narrower voltage interval is set to avoid misjudgment caused by lower detection error.

The voltage detection module 20 of the embodiment of the present application identifies the connection polarity of the capacitive load and detects the voltage of the capacitive load through the voltage proportion operation circuit 21 and the filter circuit 22. Compared with a voltage detection module adopting an isolation device, the polarity reverse connection of the capacitive load can be detected more quickly, and the MCU can control the switch control module to be in a disconnection state under the condition of detecting the polarity reverse connection of the capacitive load, so that the safety and the reliability of a control system are improved.

The principle of the voltage detection module 20 will be briefly described below with the capacitive load 50 as an automotive battery.

When the anode of the automobile battery is connected with the cathode of the power output port, and the cathode of the automobile battery is connected with the anode of the power output port, the phenomenon of polarity reversal occurs; the automobile battery forms a discharge loop through the first diode D1 and the third resistor R3, and if the voltage drop of the second resistor R2 exceeds the conducting voltage of the first diode D1, the automobile battery is clamped to be near minus 0.7V in a negative direction;

fig. 3 is a diagram of simulation results of an automobile battery in different states according to the voltage detection module shown in fig. 2 according to an embodiment of the present application. As shown in the simulation result of fig. 3, through DC scan (Sweep) simulation, the X-axis simulates the circuit simulation result of the vehicle battery voltage changing from 0V TO 20V, and the Y-axis simulates the circuit simulation result of the vehicle battery voltage after being operated by the voltage detection module 20 and named as EP _ VSN _ TO _ MCU _ AD, where EP _ VSN _ TO _ MCU _ AD is electrically connected TO one a/D input port of the MCU (i.e., the first input port of the MCU); and the micro control MCU judges whether the connection of the polarity is correct or not and accurately obtains the voltage of the automobile battery according to the A/D conversion result and mathematical operation.

As shown in the result of the 2# simulation curve of fig. 3, when the voltage value corresponding TO the analog voltage signal EP _ VSN _ TO _ MCU _ AD is lower than a preset threshold a, the MCU determines that the polarity of the car battery is reversed when the car battery is connected TO the output port of the product (e.g., emergency starting power supply or smart battery clamp), keeps the internal switch control module in a conducting state (i.e., a closed state), and prohibits the battery pack of the emergency starting power supply from outputting the car battery. The predetermined threshold a of the simulation result of fig. 3 is 1.07V.

As shown in the result of the 3# simulation curve of fig. 3, when the voltage value corresponding TO the analog voltage signal EP _ VSN _ TO _ MCU _ AD is higher than a preset threshold a, the micro control MCU assumes that the polarity of the car battery when connected TO the output port of the product (e.g., emergency starting power or intelligent battery clamp) is completely correct (positive polarity); the EP _ VSN _ TO _ MCU _ AD voltage signal connected TO the a/D port of the MCU (i.e., the first input terminal of the MCU) follows in full linear direct proportion TO the battery voltage.

Under the condition that the polarity connection is correct, if the MCU detects that the battery voltage reduction slope is triggered to the set slope threshold value by the corresponding A/D input port (namely the first input end of the MCU), the MCU outputs an enabling output signal to the switch control module to enter a conducting state, so that the battery pack of the emergency starting power supply is started to output the automobile battery.

As shown in the result of the 4# simulation curve of fig. 3, when the voltage of the corresponding a/D input port of the MCU (i.e., the first input port of the MCU) is equal to a preset threshold B, the micro-control MCU considers that the external car battery is not electrically connected to the output port of the vehicle (e.g., the emergency start power supply or the smart battery holder) or considers that there is no battery load in the vehicle, and allows the external forced key to trigger the switch control module to enter the closed state, thereby starting the output of the battery pack of the emergency start power supply to the car battery. The predetermined threshold B of the simulation result of fig. 3 is 1.27V.

As shown in the result of the 1# simulation curve of fig. 3, when the voltage of the corresponding a/D input port of the MCU (i.e., the first input terminal of the MCU) is equal to a preset threshold a, the MCU determines that the positive electrode and the negative electrode of the car battery are short-circuited, and controls the switch control module to enter the off state, thereby prohibiting the output of the car battery from the battery pack of the emergency starting power supply.

Referring to fig. 4, fig. 4 is a schematic structural diagram of another voltage detection module according to an embodiment of the present disclosure, and as shown in fig. 4, the voltage detection module 20 includes a polarity detection circuit 23 and a voltage detection circuit 24; the polarity detection circuit 23 comprises a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a second capacitor C2 and a second diode D2, and the voltage detection circuit 24 comprises a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a third capacitor C3 and a third diode D3;

a first end of the fifth resistor R5 is connected to a power source terminal VDD, a second end of the fifth resistor R5 is connected to a first end of the sixth resistor R6, a first end of the eighth resistor R8 and a first end of the ninth resistor R9, a second end of the eighth resistor R8 is connected to a first end of the second capacitor C2 and an output end of the polarity detection circuit 23, a second end of the ninth resistor R9 is connected to a first end of the seventh resistor R7 and a first end of a second diode D2, a second end of the second diode D2 is connected to a first end of the capacitive load 50 and a first end of the eleventh resistor R11, a second end of the eleventh resistor R11 is connected to a first end of the tenth resistor R10 and a first end of the twelfth resistor R12, a second end of the twelfth resistor R12 is connected to a first end of the third capacitor C3 and an output end of the voltage detection circuit 24, a second end of the sixth resistor R6, a second end of the seventh resistor R7, a second end of the tenth resistor R10, a second end of the second capacitor C2, and a second end of the third capacitor C3 are grounded;

the MCU10, configured TO receive, through a second input terminal of the MCU10, a Polarity voltage signal (Polarity _ det _ TO _ MCU shown in fig. 4) output by the output terminal of the Polarity detection circuit 23;

the MCU10 is further configured to determine that the capacitive load 50 has a reverse polarity when the voltage value corresponding to the polarity voltage signal is in the third voltage interval, and control the switch control module 30 to be in an off state.

Wherein the third voltage interval may be set to be less than 0.45V.

The fifth resistor R5, the sixth resistor R6, the seventh resistor R7, the ninth resistor R9 and the second capacitor C2 in the polarity detection circuit 23 form a proportional voltage divider circuit, and the eighth resistor R8 and the second diode D2 form a low-pass filter.

The tenth resistor R10, the third diode D3 and the eleventh resistor R11 in the voltage detection circuit 24 form a proportional voltage division circuit, and the D3 and the R10 are connected in parallel and used for protecting the voltage received by the third input end of the MCU from being lower than-0.7V. The twelfth resistor R12 and the third capacitor C3 form another low-pass filter.

Optionally, the MCU10 is further configured to determine that the polarity of the capacitive load 50 is positive when the voltage value corresponding to the polarity voltage signal is in a fourth voltage interval, where the third voltage interval and the fourth voltage interval do not intersect each other.

Wherein, the fourth voltage interval can be set to 0.45-0.6V.

Optionally, the MCU10 is further configured TO receive, through a third input terminal of the MCU, a capacitive load voltage signal (such as Car _ BAT _ Sens _ TO _ MCU shown in fig. 4) output by the output terminal of the voltage detection circuit when the polarity of the capacitive load 50 is positive, where the voltage detection module 20 of the embodiment of the present application determines the voltage of the capacitive load 50 according TO the capacitive load voltage signal.

The voltage detection module 20 of the embodiment of the present application identifies the connection polarity of the capacitive load through the polarity detection circuit 23, and detects the voltage of the capacitive load through the voltage detection circuit 24. Compared with a voltage detection module adopting an isolation device, the polarity reverse connection of the capacitive load can be detected more quickly, and the MCU can control the switch control module to be in a disconnection state under the condition of detecting the polarity reverse connection of the capacitive load, so that the safety and the reliability of a control system are improved.

The principle of the voltage detection module 20 will be briefly described below with reference to fig. 4, wherein the capacitive load 50 is a car battery.

When the automobile battery is reversely connected, the Polarity _ det _ TO _ MCU voltage signal is smaller than a set voltage threshold (for example, 0.45V); when the automobile battery is connected positively, the Polarity _ det _ TO _ MCU voltage signal is in a fourth voltage interval (for example, 0.45-0.6V); the voltage signal of Car _ BAT _ Sens _ TO _ MCU is linearly proportional TO the voltage of the Car battery.

Fig. 5 is a diagram of simulation results of the automobile battery in different states according to the voltage detection module shown in fig. 4 according to an embodiment of the present application. As shown in the simulation result of fig. 5, through DC scan (Sweep) simulation, the X-axis simulates the circuit simulation result of the change of the Car battery voltage from 0V TO 20V, the Y-axis simulates the circuit simulation result of the Polarity voltage signal Polarity _ det _ TO _ MCU and the capacitive load voltage signal Car _ BAT _ Sens _ TO _ MCU after the Car battery voltage is operated by the voltage detection module 20, the Polarity _ det _ TO _ MCU is electrically connected TO one a/D input port of the MCU (i.e., the second input terminal of the MCU), the Car _ BAT _ Sens _ TO _ MCU is electrically connected TO the other a/D input port of the MCU (i.e., the third input terminal of the MCU), and the micro-control MCU accurately obtains the voltage of the Car battery through the voltage signal of the Car _ BAT _ Sens _ TO _ MCU and mathematical operation.

As shown in the result of the 1# simulation curve of fig. 5, when the voltage value corresponding TO the Polarity voltage signal Polarity _ det _ TO _ MCU is in the fourth voltage interval (e.g., 0.45-0.6V), the MCU determines that the Polarity of the car battery is completely correct (positive Polarity) when the car battery is connected TO the output port of the product (e.g., emergency starting power supply or intelligent battery clamp).

As shown in the result of the # 2 simulation curve of fig. 5, when the polarity of the Car battery when connected TO the output port of the product (e.g., emergency starting power or smart battery clamp) is positive, the Car _ BAT _ Sens _ TO _ MCU voltage signal connected TO the a/D port of the MCU (i.e., the third input terminal of the MCU) follows the battery voltage in a completely linear positive proportion.

As shown in the result of the 3# simulation curve of fig. 5, when the voltage value corresponding TO the Polarity voltage signal Polarity _ det _ TO _ MCU is in the third voltage interval (for example, less than 0.45V), the MCU determines that the Polarity of the car battery is reversely connected TO the output port of the product (for example, the emergency starting power supply or the intelligent battery clamp); the MCU keeps an internal switch control module to enter a disconnected state, and prohibits the battery pack of the emergency starting power supply from starting to output the automobile battery.

As shown in the result of the 4# simulation curve of fig. 5, when the polarity of the Car battery is reversed when it is connected TO the output port of a product (e.g., emergency starting power or smart battery clamp), the Car _ BAT _ Sens _ TO _ MCU voltage signal connected TO the a/D port of the MCU (i.e., the third input terminal of the MCU) follows the battery voltage in a completely linear inverse proportion.

Referring to fig. 6, fig. 6 is a schematic structural diagram of another voltage detection module according to an embodiment of the present disclosure, as shown in fig. 6, the voltage detection module includes a first switch tube S1, a second switch tube S2, a third switch tube S3, a fourth switch tube S4, and a load resistor R_L；

The first end of the first switch tube S1 and the first end of the fourth switch tube S4 are connected to the first end 51 of the capacitive load 50, and the first ends of the second switch tube S2 and the third switch tube S3 are connected to the capacitive loadA second terminal 52 of the load 50, a second terminal of the first switching tube S1 and a second terminal of the second switching tube S2 are connected to the positive electrode BAT + of the internal battery pack 41, and a second terminal of the third switching tube S3 and a second terminal of the fourth switching tube S4 are connected to the load resistor R_LThe first terminal of (1), the load resistance R_LIs connected to the negative electrode BAT-of the internal battery pack 41;

the MCU10 is further configured to detect the load resistor R when the first switching tube S1 and the third switching tube S3 are turned on and the second switching tube S2 and the fourth switching tube S4 are turned off_LA first current on;

the MCU10, further configured to detect the load resistor R when the first switching transistor S1 and the third switching transistor S3 are turned off and the second switching transistor S2 and the fourth switching transistor S4 are turned on_LA second current on;

the MCU10, further configured to determine that the capacitive load 50 is connected in reverse polarity when the first current is greater than the second current;

the MCU10, is further configured to determine that the capacitive load 50 is connected in a positive polarity when the first current is less than the second current.

Optionally, as shown in fig. 6, the voltage detection module further includes a fifth switch tube S5 and a sixth switch tube S6; a fifth switch tube S5 and a sixth switch tube S6 are electrically connected between the internal battery pack 41 and the capacitive load 50, and serve as switch control modules for power output of the internal battery pack 41;

a first end of the fifth switching tube S5 is connected to the first end 51 of the capacitive load 50, a second end of the fifth switching tube S5 is connected to the positive electrode BAT + of the internal battery pack 41, a first end of the sixth switching tube S6 is connected to the second end 52 of the capacitive load 50, and a second end of the sixth switching tube S6 is connected to the negative electrode BAT-of the internal battery pack 41.

In the embodiment of the present application, the capacitive load 50 is illustrated as an example of an automobile battery.

Wherein, S5 and S6 are high-power electronic switches which are off when not striking sparksAn on state. S1, S2, S3 and S4 are low-power electronic switches, and R in the comparison loop is switched on or off by switching S1-S4_LThe passing current is used for judging whether the internal battery pack 41 is connected with the automobile battery in a positive or negative mode.

The specific process comprises the following steps: when the low-power electronic switches S1, S3 are closed (conducted) and S2, S4 are opened, the MCU detects the voltage across the load resistor R_LUpper current I₁(ii) a In FIG. 6, the current loop is the first terminal 51, S1, BAT +, BAT-, R of the vehicle battery 50_LS3, the second end 52 of the automotive battery 50. When the low-power electronic switches S2, S4 are closed and S1 and S3 are opened, the MCU detects the voltage across the load resistor R_LUpper current I₂(ii) a In FIG. 6, the current loop includes BAT +, S2, the second terminal 52 of the vehicle battery 50, the first terminal 51 of the vehicle battery 50, S4, and R_L、BAT-。

When I is₁<I₂When the internal battery pack 41 is connected to the automobile battery, the first end 51 of the automobile battery 50 is the positive electrode of the automobile battery 50, and the second end 52 of the automobile battery 50 is the negative electrode of the automobile battery 50; when I is₁>I₂The internal battery pack 41 is shown connected to the vehicle battery in reverse. When I is₁＝I₂When the value is 0, it indicates that the vehicle battery is not connected to the internal battery pack 41, in this case, the first end 51 of the vehicle battery 50 is the negative electrode of the vehicle battery 50, and the second end 52 of the vehicle battery 50 is the positive electrode of the vehicle battery 50.

The voltage detection module of the embodiment of the application is composed of a first switch tube S1, a second switch tube S2, a third switch tube S3, a fourth switch tube S4 and a load resistor R_LAnd identifying the connection polarity of the capacitive load. Compared with a voltage detection module adopting an isolation device, the polarity reverse connection of the capacitive load can be detected more quickly, and the MCU can control the switch control module to be in a disconnection state under the condition of detecting the polarity reverse connection of the capacitive load, so that the safety and the reliability of a control system are improved.

Referring to fig. 7, fig. 7 is a schematic structural diagram of another intelligent control system according to an embodiment of the present application, and fig. 7 is obtained by further optimizing on the basis of fig. 1. As shown in fig. 7, the intelligent control system may further include a wake-up module 70, where the wake-up module 70 is configured to send an interrupt signal to the MCU10 through an output terminal of the wake-up module 70 when the voltage of the capacitive load 50 is greater than the first threshold, where the interrupt signal is configured to switch the MCU10 from the sleep state or the standby state to the normal operating state.

Optionally, as shown in fig. 8, the wake-up module 70 includes a first voltage comparator X1, a second voltage comparator X1, a fourth diode D4, a fifth diode D5, and a thirteenth resistor R13;

the power supply terminal VDD is connected to the power supply terminal of the first voltage comparator X1, the power supply terminal of the second voltage comparator X1 and the first terminal of the thirteenth resistor R13, and the ground terminal of the first voltage comparator X1 and the ground terminal of the second voltage comparator X1 are grounded;

a non-inverting input terminal of the first voltage comparator X1 is connected TO a first reference voltage VREF _ a, a inverting input terminal of the first voltage comparator X1 is connected TO the analog voltage signal (e.g., EP _ VSN _ TO _ MCU _ AD shown in fig. 2) or the capacitive load voltage signal (e.g., Car _ BAT _ Sens _ TO _ MCU shown in fig. 4), an output terminal of the first voltage comparator X1 is connected TO a cathode of the fourth diode D4, and an anode of the fourth diode D4 is connected TO a second terminal of the thirteenth resistor R13, an anode of the fifth diode D5 and an output terminal of the wake-up module 70;

the non-inverting input terminal of the second voltage comparator X1 is connected to the analog voltage signal or the capacitive load voltage signal, the inverting input terminal of the second voltage comparator X1 is connected to a second reference voltage VREF _ B, and the output terminal of the second voltage comparator X1 is connected to the cathode of the fifth diode D5.

The first reference voltage VREF _ a and the second reference voltage VREF _ B may be equal or unequal.

The signals input TO the non-inverting input terminal of the first voltage comparator X1 and the inverting input terminal of the second voltage comparator X1 are the same, and are all EP _ VSN _ TO _ MCU _ AD in fig. 2 or all Car _ BAT _ Sens _ TO _ MCU in fig. 4.

The capacitive load is an automobile battery as an example, when the voltage of the automobile battery is greater than a set first threshold (for example, 5V), and for an automobile battery with 12V, if the voltage is lower than 5V, it indicates that the automobile battery is likely to be unusable, the MCU needs to be awakened, and further polarity detection and voltage detection are performed on the automobile battery.

Referring to fig. 9, fig. 9 is a schematic diagram illustrating simulation results of a wake-up circuit according to an embodiment of the present disclosure. As shown in fig. 9, when the voltage of the vehicle battery is greater than a set first threshold (e.g., 5V), no matter whether the vehicle battery is in a forward connection state or a reverse connection state, the Wake-up module 70 may output a transition signal (Wake _ up _ to _ MCU shown in fig. 8) from a high level to a low level to be transmitted to the interrupt input port of the MCU, thereby playing a role of waking up the MCU. As can be seen from fig. 9, the first reference voltage VREF _ a and the second reference voltage VREF _ B are set differently.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a regulated power supply module according to an embodiment of the present application. As shown in fig. 10, the regulated power supply module 80 includes a sixth diode D6, a seventh diode D7, and a low dropout regulator LDO, wherein an anode of the sixth diode D6 is connected to an anode of the internal battery 41, a cathode of the sixth diode D6 is connected to a cathode of the seventh diode D7 and an input terminal Vin of the LDO, an anode of the seventh diode D7 is connected to an anode of the capacitive load 50, and an output terminal Vout of the LDO is the power supply terminal VDD.

The regulated power supply module 80 receives the correct direct current voltage input and outputs the set accurate voltage to supply power to each functional module or related electronic components in the intelligent control system. The input of regulated power supply module 80 is connected to the positive pole of the internal battery pack and the positive pole of the capacitive load. The regulated power supply module 80 can provide a stable VDD (e.g., 3.3V or 5V) power supply for each functional module of the intelligent control system.

The MCU can receive a key activation signal through the key input module to perform level triggering awakening; and after being activated, the MCU enters a normal working state and outputs a corresponding state indication signal to the state indication module.

In some scenarios, for example, when the voltage of the car battery is less than 5V, the wake-up module 70 cannot work normally, and at this time, the user may press the key input module, and may switch the MCU from the sleep state or the standby state to the normal working state through the key input module.

In the embodiment of the application, when the internal battery pack discharges the automobile battery through the closed switch control module, the discharge output current passes through the current detection device such as a current detection resistor or a conductor and voltage information generated by current flowing through the current detection resistor or the conductor is transmitted to the A/D input port of the MCU through the voltage amplification circuit, A/D conversion and mathematical calculation are carried out to indirectly obtain the discharge output current information, the MCU compares the actual output current value with the set threshold value of the over-current or short-circuit state, and if the actual output current value is greater than the set threshold value of the over-current or short-circuit state, the switch control module is disconnected, and the output loop is cut off. According to the embodiment of the application, the current detector is arranged, so that the intelligent control system has a protection mechanism for outputting overcurrent and external load short circuit.

In the embodiment of the application, after the auxiliary starting of the automobile is finished, the generator in the automobile starts to work, and the voltage of the external automobile battery is possibly higher than that of the internal battery of the emergency starting power supply, so that unsafe phenomena of current backflow and internal battery recharging can occur. Once the engine is started, the generator is arranged on the engine, and once the engine motor rotates, the generator is driven to start generating electricity, and at the moment, the generator reversely charges the storage battery and the internal battery, and at the moment, the current flows backwards. The embodiment of the application adopts the two-way current detection sensor to detect the direction of the output current and the information of the current value, the MCU receives the output from the two-way current detection sensor, the normal starting output is the discharging direction, and if the direction of the detected current is the charging direction, the switch control module is disconnected, and the output loop is cut off.

In the embodiment of the application, the state indicating module is formed by an LED indicating lamp or a combination of the LED indicating lamp and a buzzer.

The intelligent control system generally comprises three products, namely an emergency starting power supply, a storage battery clamp and a capacitive load. The emergency starting power supply comprises an internal battery pack, the storage battery clamp comprises a power supply output port and a power supply input port, and the capacitive load can be an automobile storage battery (which can be called an automobile battery for short) and the like. The power input port of the battery clamp is connected with the internal battery pack, and the power output port of the battery clamp is connected with the automobile battery. Specifically, the positive electrode of the power input port of the battery clamp is connected with the positive electrode of the internal battery pack, and the negative electrode of the power input port of the battery clamp is connected with the negative electrode of the internal battery pack. The positive pole of the power output port of the battery clamp corresponds to the positive clamp of the battery clamp (the positive clamp is red generally), and the negative pole of the power output port of the battery clamp corresponds to the negative clamp of the battery clamp (the negative clamp is black generally). Under normal conditions, the positive polarity clamp of the battery clamp clamps the positive pole of the automobile battery, the negative polarity clamp of the battery clamp clamps the negative pole of the automobile battery, at the moment, the positive pole of the power output port of the battery clamp is connected with the positive pole of the automobile battery, the negative pole of the power output port of the battery clamp is connected with the negative pole of the automobile battery, and the polarity of the automobile battery is connected positively. In some cases, for example, when a user operates improperly, and an unskilled serviceman operates erroneously, the positive polarity clamp of the battery clamp clamps the negative electrode of the automobile battery, and the negative polarity clamp of the battery clamp clamps the positive electrode of the automobile battery, the automobile battery is connected in a reversed polarity manner.

Referring to fig. 11, fig. 11 is a schematic structural diagram of another intelligent control system according to an embodiment of the present application. As shown in fig. 11, the intelligent control system includes an emergency starting power supply, a battery clamp, and a capacitive load. The battery clamp and capacitive load in fig. 11 are illustrated with positive polarity connections.

The MCU, the voltage detection module, and the switch control module in the intelligent control system may be disposed in the emergency starting power supply, as shown in fig. 12. Or in the battery clamp, the battery clamp at this time may be called an intelligent battery clamp, as shown in fig. 13.

The control system, the emergency starting power supply and the intelligent battery clamp provided by the embodiment of the application are introduced in detail, a specific example is applied in the description to explain the principle and the implementation mode of the application, and the description of the embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. An intelligent control system is characterized by comprising an MCU, a voltage detection module, a switch control module, an emergency starting power supply, a capacitive load and a power output port;

the power output port is electrically connected with the capacitive load;

2. The intelligent control system according to claim 1, wherein the voltage detection module is further configured to detect a voltage of the capacitive load.

3. The intelligent control system according to claim 1 or 2, wherein the voltage detection module comprises a voltage proportional operation circuit and a filter circuit; the voltage proportion operation circuit comprises a first resistor, a second resistor, a third resistor and a first diode, and the filter circuit comprises a fourth resistor and a first capacitor;

4. The intelligent control system of claim 3,

and the MCU is further used for determining that the polarity of the capacitive load is positive under the condition that the voltage value corresponding to the analog voltage signal is greater than the upper limit value of the first voltage interval.

5. The intelligent control system of claim 4,

the MCU is further used for controlling the switch control module to be in a conducting state if the falling slope of the voltage value corresponding to the analog voltage signal is detected to be larger than a preset slope threshold value under the condition that the polarity of the capacitive load is in positive connection.

6. The intelligent control system of claim 3,

and the MCU is further used for determining that the anode and the cathode of the capacitive load are short-circuited and controlling the switch control module to be in a disconnected state under the condition that the voltage value corresponding to the analog voltage signal is in the first voltage interval.

7. The intelligent control system of claim 3,

the MCU is further configured to determine that the power output port and the capacitive load are electrically connected abnormally when the voltage value corresponding to the analog voltage signal is in a second voltage interval, and the first voltage interval and the second voltage interval do not intersect.

8. The intelligent control system according to claim 1 or 2, wherein the voltage detection module comprises a polarity detection circuit and a voltage detection circuit; the polarity detection circuit comprises a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a second capacitor and a second diode, and the voltage detection circuit comprises a tenth resistor, an eleventh resistor, a twelfth resistor, a third capacitor and a third diode;

9. The intelligent control system of claim 8,

the MCU is further configured to determine that the polarity of the capacitive load is positive when the voltage value corresponding to the polarity voltage signal is within a fourth voltage interval, where the third voltage interval and the fourth voltage interval do not intersect each other.

10. The intelligent control system of claim 9,

the MCU is further used for receiving a capacitive load voltage signal output by the output end of the voltage detection circuit through a third input end of the MCU under the condition that the polarity of the capacitive load is positively connected, and determining the voltage of the capacitive load according to the capacitive load voltage signal.

11. The intelligent control system according to claim 1, wherein the voltage detection module comprises a first switch tube, a second switch tube, a third switch tube, a fourth switch tube and a load resistor;

12. The intelligent control system according to claim 11, wherein the voltage detection module further comprises a fifth switching tube and a sixth switching tube;

13. The intelligent control system according to any one of claims 4 to 7 and 10, further comprising a wake-up module, wherein the wake-up module is configured to send an interrupt signal to the MCU through an output end of the wake-up module when detecting that the voltage of the capacitive load is greater than a first threshold, and the interrupt signal is configured to switch the MCU from a sleep state or a standby state to a normal operating state.

14. The intelligent control system according to claim 13, wherein the wake-up module comprises a first voltage comparator, a second voltage comparator, a fourth diode, a fifth diode, and a thirteenth resistor;

15. The intelligent control system according to any one of claims 4 to 7, 9 to 10 and 14, further comprising a regulated power supply module, wherein the regulated power supply module comprises a sixth diode, a seventh diode and a low dropout regulator (LDO), an anode of the sixth diode is connected to an anode of the internal battery pack, a cathode of the sixth diode is connected to a cathode of the seventh diode and an input end of the LDO, an anode of the seventh diode is connected to an anode of the capacitive load, and an output end of the LDO is the power supply end.

16. The intelligent control system according to claim 1 or 2, further comprising a key input module, wherein when the key input module receives a key activation signal, the key input module sends an interrupt signal to the MCU, and the interrupt signal is used to switch the MCU from a sleep state or a standby state to a normal operating state.

17. The intelligent control system according to claim 1 or 2, further comprising a current detector disposed between the power output port and the capacitive load for detecting a discharge current when the internal battery pack is discharged to the capacitive load;

18. The intelligent control system according to claim 1 or 2, further comprising a bidirectional current detection sensor provided between the power output port and the capacitive load for detecting whether the internal battery pack is in a discharge state or a charge state;

19. The intelligent control system according to claim 1 or 2, further comprising a status indication module, wherein the status indication module is connected to the MCU to realize status indication of the intelligent control system, and the status indication comprises a working status indication and an alarm prompt.

20. The intelligent control system according to any one of claims 1-2, 4-7, 9-12 and 14, wherein the capacitive load comprises any one of a storage battery, a super capacitor and a lithium battery or any combination thereof.

21. An emergency starting power supply is characterized by comprising an MCU, a voltage detection module, a switch control module and an internal battery pack;

22. An intelligent storage battery clamp is characterized by comprising an MCU, a voltage detection module, a switch control module, a power output port and a power input port;