CN112366788A

CN112366788A - Intelligent connecting device, starting power supply and storage battery clamp

Info

Publication number: CN112366788A
Application number: CN202011306689.2A
Authority: CN
Inventors: 雷云; 张智锋; 全和清; 程铭; 林建平; 欧阳明星
Original assignee: Shenzhen Carku Technology Co Ltd
Current assignee: Shenzhen Carku Technology Co Ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-02-12

Abstract

The application provides an intelligence connecting device, starting power supply and battery clamp. The intelligent connecting device comprises a switch circuit, a key control module, a controller and a reverse connection detection module. The reverse connection detection module outputs a first control signal when detecting that the external load is reversely connected to the load connection end so as to switch the key control module to a failure state, and cannot generate a key instruction to force the controller to output a driving signal, so that the switch circuit is kept in a disconnection state, and the battery pack connected to the power supply connection end is forbidden to discharge and output the external load. The intelligent connecting device directly controls the effectiveness of the key control module through the reverse connection detection module, so that a user is forbidden to input a key instruction to force the controller to output a driving signal for switching on the switch circuit when an external load is reversely connected, the discharge output of the battery assembly to the external load can be timely disconnected by rapidly responding to the reverse connection state of the external load, and the detection speed and the effectiveness of related protection functions are improved.

Description

Intelligent connecting device, starting power supply and storage battery clamp

Technical Field

The application relates to the technical field of electronics, especially, relate to an intelligence connecting device, start power supply and storage battery clamp.

Background

Although most emergency starting power supply products in the current market can realize the emergency starting output function of automobile engine ignition, the starting circuits of most similar products do not have the function of automatically identifying the connection polarity, and some users cannot correctly distinguish the electrical connection polarity between the external load and the output port of the starting power supply in the electrical connection operation with the external loads such as automobile storage batteries and the like. When the polarity of the two is reversed, a short circuit can occur, so that a battery for starting a power supply or an external load is damaged, and even a fire disaster can be caused to cause safety events such as property damage, personnel injury and the like.

At present, some starting power supplies are provided with polarity identification circuits or polarity reverse connection protection circuits, but most of the starting power supplies adopt a photoelectric isolation device as a polarity detection device, when the polarity is reversely connected, the photoelectric isolation device outputs a reverse connection level signal, a controller (MCU) disconnects a discharge output circuit of the starting power supply according to the reverse connection level signal, and the controller also drives a corresponding state indicating circuit to give an alarm prompt.

However, the optoelectronic isolation device and the controller have application defects of high cost, easy service life attenuation, long response time and easy failure due to external interference, when a user connects the external load and the output port of the starting power supply in reverse polarity, once the optoelectronic isolation device fails or transmits a reverse level signal to be abnormal, the controller is often misjudged, so that the discharging output of the starting power supply cannot be timely disconnected in response to the reverse level signal accurately and timely, and thus the starting power supply or the external load is easily damaged.

Disclosure of Invention

The application aims at the application defect of the connection polarity detection circuit and the power output control system, provides an intelligent connecting device, a starting power supply and an intelligent battery clamp, can rapidly detect and respond to the reverse connection state of an external load and timely control the battery pack to the discharge output of the external load, thereby improving the detection speed and effectiveness of related protection functions and improving the safety and reliability of the power output control system.

A first aspect of the present application provides an intelligent connecting device, which includes a power connection end, a load connection end, a switch circuit, a controller, a key control module, and a reverse connection detection module. The power supply connecting end is used for being electrically connected with the battery pack. The load connection terminal is used for being electrically connected with an external load. The switching circuit is electrically connected between the power connection terminal and the load connection terminal. The controller is electrically connected with the switch circuit, wherein the switch circuit enters a conducting state when receiving a driving signal output by the controller. The key control module is electrically connected with the controller, and can receive the pressing operation of a user to generate a key instruction when being in an effective state so as to force the controller to output the driving signal. The reverse connection detection module is electrically connected with the load connecting end and the key control module respectively, and is used for detecting the access state of the external load through the load connecting end, outputting a first control signal when detecting that the external load is reversely connected to the load connecting end, and outputting the first control signal to the key control module so as to switch the state of the key control module to a failure state. When the key control module is in a failure state, the key instruction cannot be generated, so that the controller cannot be forced to output the driving signal, the switching circuit is kept in a disconnected state, and the battery assembly is disconnected from the external load so as to prohibit the battery assembly from discharging and outputting the external load.

A second aspect of the present application provides a starting power supply, which includes a housing, a battery assembly, and the intelligent connecting device of the first aspect. The battery pack and at least part of the structure of the intelligent connecting device are arranged in the shell, and the power supply connecting end of the intelligent connecting device is electrically connected with the battery pack of the emergency starting power supply.

A third aspect of the present application provides a battery clamp comprising a housing, a power input interface, a wire clamp, and the intelligent connecting device of the first aspect. The power input interface is arranged on the shell and is electrically connected with an external starting power supply, wherein the external starting power supply comprises a battery assembly. At least part of the structure of the intelligent connecting device is arranged in the shell, and a power supply connecting end of the intelligent connecting device is electrically connected with the power supply input interface and is electrically connected with a battery assembly of the external starting power supply through the power supply input interface. One end of the wire clamp is electrically connected with the load connecting end of the intelligent connecting device, and the other end of the wire clamp is used for being electrically connected with an external load.

The utility model provides an intelligence connecting device directly controls the validity of button control module through utilizing the control signal of reverse connection detection module output to can forbid user's input button instruction when external load reverse connection and force the controller to export the drive signal who switches on switching circuit, can reach the control signal who responds rapidly and correspond with external load reverse connection state, and control battery pack in time to the purpose of the discharge output of external load, can show the detection speed and the validity that promote relevant protect function, and then can show the security and the reliability that promote power output control system.

Drawings

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

Fig. 1 is a schematic functional block diagram of an intelligent connection device according to an embodiment of the present disclosure.

Fig. 2 is a schematic circuit diagram of a current output circuit of the intelligent connection device shown in fig. 1.

Fig. 3 is a schematic circuit diagram of the reverse connection detection module and the reverse connection status indication module of the intelligent connection device shown in fig. 1.

Fig. 4 is a schematic structural diagram of the controller and the key control module shown in fig. 1.

Fig. 5 is a functional block diagram of a startup power supply according to an embodiment of the present disclosure.

Fig. 6 is a schematic diagram of a structure of the start-up power supply shown in fig. 5.

Fig. 7 is a functional block diagram of a startup power supply according to another embodiment of the present application.

Fig. 8 is a schematic diagram of a structure of the starting power supply shown in fig. 7.

Fig. 9 is a schematic diagram of functional modules of a battery clamp according to an embodiment of the present disclosure.

Fig. 10 is a schematic structural view of the battery clamp shown in fig. 9.

Description of the main elements

Intelligent connecting device 100

Current output circuit 11

Power connection 20

Power positive connection terminal BAT +

Power supply negative connection terminal BAT-

Load connection 30

Loaded positive connecting end CAR +

Load connection terminal CAR-

First ground terminal PGND

Switching circuit 40

Switch device 41

Switch drive module 42

Drive power supply module 43

Reverse connection detection module 50

First detection terminal 51

Second sensing terminal 52

Drive voltage input terminal 53

Control signal output terminal 54

First transistor Q3

Second transistor Q6

Third transistor Q1

Resistors R4, R21, R22, R27 and R11

Diode D1

Second ground GND

Load connection status indication module 60

Reverse connection state indicating module 61

Display unit 611

Light emitting diode LED2

Alarm unit 612

Loudspeaker LS1

Resistors R10 and R16

Capacitor C6

Positive connection status indication module 62

Controller 70

Microcontroller U2

Voltage-stabilized power supply module 81

Key control module 82

Key module S1

Control switch Q8

Resistor R26

Load voltage detection module 83

Temperature detection module 84

Current detection module 85

Overcurrent and short circuit protection module 86

Starting power supplies 200, 200'

Shell 201, 201'

Battery assembly 202

Connection port 203

Charging interface 204

Battery clamp 300

Casing 301

Power input interface 302

Connectors

400, 205, 303

First clamp 401

Second wire clamp 402

Cable 403

Connection terminal 404

External power supply device 500

Connection port 501

The following detailed description will further illustrate the present application in conjunction with the above-described figures.

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. The drawings are for illustration purposes only and are merely schematic representations, not intended to limit the present application. It is to be understood that the embodiments described are only a few examples of the present application and not all examples. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The application provides an intelligent connecting device, the intelligent connecting device utilizes the control signal of reverse connection detection module output comes the validity of direct control button control module to can forbid user's input button instruction when external load reverse connection comes to force the controller to output the drive signal who switches on the switch circuit, and then can respond rapidly with the control signal that external load reverse connection state corresponds, and in time control battery pack is to the output of discharging of external load. The intelligent connecting device can be applied to an emergency starting power supply and can also be applied to a storage battery clamp.

Fig. 1 is a schematic diagram of functional modules of an intelligent connecting device provided in the present application. As shown in fig. 1, the smart connection device 100 includes a power connection terminal 20, a load connection terminal 30 and a switch circuit 40, wherein the power connection terminal 20 is configured to be electrically connected to a battery assembly (not shown), the load connection terminal 30 is configured to be electrically connected to an external load (not shown), and the switch circuit 40 is electrically connected between the power connection terminal 20 and the load connection terminal 30.

Referring to fig. 1 and fig. 2, the power connection terminal 20, the load connection terminal 30 and the switch circuit 40 form a current output circuit 11 for discharging the battery pack to the external load, and the switch circuit 40 is used for turning on or off the current output circuit 11. In this manner, the battery pack can discharge the external load through the smart connection device 100.

In this embodiment, the power connection terminal 20 includes a power positive connection terminal BAT + and a power negative connection terminal BAT-, wherein the power positive connection terminal BAT + and the power negative connection terminal BAT-are electrically connected to the positive electrode and the negative electrode of the battery assembly in a one-to-one correspondence manner. The battery pack is connected to the smart connector 100 through the power connection terminal 20 to supply an operating voltage to the smart connector 100 and supply power to the external load through the switching circuit 40. It is understood that when the smart connecting device 100 is applied to an emergency starting power supply, the battery assembly may be a built-in battery assembly of the emergency starting power supply. When the intelligent connecting device 100 is applied to a battery clamp, the battery assembly may be an external power supply device, such as a battery assembly of an external emergency starting power supply or other energy storage power supply device.

The load connection terminal 30 includes a load positive connection terminal CAR + and a load negative connection terminal CAR-, wherein the load positive connection terminal CAR + and the load negative connection terminal CAR-are electrically connected to the positive electrode and the negative electrode of the external load in a one-to-one correspondence, and the load negative connection terminal CAR-is also electrically connected to the first ground terminal PGND. The external load may be an automotive battery or an automotive engine. It is understood that the automotive battery includes, but is not limited to, a lead-acid battery, a lithium battery, an ultracapacitor, and the like. For example, if the battery assembly is a battery assembly included in an external emergency starting power supply, and the external load is an automobile battery or an automobile engine, when the external emergency starting power supply is correctly connected to the intelligent connection device 100 through the power connection terminal 20, and the external load is correctly connected to the load connection terminal 30, the external emergency starting power supply can start discharging output through the current output circuit 11 formed by the power connection terminal 20, the switch circuit 40, and the load connection terminal 30, that is, provide an emergency starting power supply for the automobile battery or the automobile engine, and here, the external emergency starting power supply can be understood as charging the automobile battery or the automobile engine, so that the automobile can be started when the automobile battery or the automobile engine is in a low power state.

Referring to fig. 1 again, the intelligent connection device 100 further includes a regulated power supply module 81 electrically connected to the power connection terminal 20, wherein the regulated power supply module 81 is configured to receive an input voltage of the battery assembly through the power connection terminal 20 and perform voltage conversion on the input voltage to output a stable voltage VCC, for example, a dc voltage of 5V, so as to provide a stable power supply voltage for each functional module of the intelligent connection device 100. For example, when an external emergency starting power supply is correctly connected to the intelligent connection device 100 through the power connection terminal 20, the regulated power supply module 81 can obtain the input voltage to normally operate, and output the regulated voltage VCC to supply power to each functional module inside the intelligent connection device 100, so that each functional module is powered on to normally operate. The regulated power supply module 81 may employ a DC-DC converter or a linear regulator, such as a low dropout regulator (LDO).

In this embodiment, the intelligent connection device 100 further includes a driving power module 43 electrically connected to the switch circuit 40, and the driving power module 43 is configured to provide driving power to the switch circuit 40, so that the switch circuit 40 is maintained in an energized and active state. In the present embodiment, the on-off state of the switch circuit 40 needs to be controlled when the switch circuit 40 is in the energized and active state, and when the switch circuit 40 is in the de-energized state, the switch circuit 40 is automatically turned off and disabled, and the on-off state cannot be controlled. It should be noted that reference herein to "disabling" of the switching circuit 40 means disabling the switching circuit 40 from responding to the associated signal, e.g. the drive signal, i.e. the switching circuit 40 is in an inactive state not controlled by the associated signal.

In one embodiment, the driving power module 43 is electrically connected to the power connection terminal 20, and the driving power of the switching circuit 40 is provided by a battery assembly electrically connected to the power connection terminal 20. Alternatively, in another embodiment, the driving power supply module 43 may be electrically connected to the regulated power supply module 81, and the driving power supply of the switching circuit 40 is provided by the regulated voltage VCC output by the regulated power supply module 81.

The intelligent connection device 100 further includes a controller 70 electrically connected to the switch circuit 40, wherein the controller 70 is configured to output a driving signal relax _ EN2 to the switch circuit 40 to turn on the switch circuit 40 in an energized and active state, that is, the switch circuit 40 enters a conducting state when receiving the driving signal output by the controller 70, so that the battery assembly can be electrically connected to the external load and perform discharging output on the external load.

In this embodiment, the smart connection device 100 further includes a key control module 82 electrically connected to the controller 70, and the key control module 82 can receive a pressing operation of a user to generate a key command when in an active state, so as to force the controller 70 to output the driving signal relax _ EN2, thereby realizing the discharging output of the battery assembly to an external load.

It will be appreciated that the operating modes of the controller 70 may include an automatic output mode and a forced output mode. In one embodiment, the controller 70 defaults to an automatic output mode upon power-up. When the controller 70 is in the automatic output mode, the controller 70 outputs the driving signal relax _ EN2 when it is determined that the external load is connected to the load connection terminal 30 and the voltage of the external load satisfies a preset condition. The controller 70 enters the forced output mode upon receiving the key command, and immediately outputs the driving signal relax _ EN2 in response to the key command. In one embodiment, the controller 70 resumes the automatic output mode after responding to the key command and outputting the driving signal relax _ EN 2.

In the present embodiment, the switching circuit 40 includes a switching device 41 and a switch driving module 42, wherein the switching device 41 is electrically connected between the power connection terminal 20 and the load connection terminal 30. In this embodiment, the switching device 41 is electrically connected between the power supply positive connection terminal BAT + and the load positive connection terminal CAR +. In other embodiments, the switching device 41 may be electrically connected between the power supply negative connection terminal BAT and the load negative connection terminal CAR. The switching device 41 may employ an electromagnetic relay or a semiconductor power device, such as a MOSFET. In the present embodiment, the switching device 41 employs an electromagnetic relay K1.

The switch driving module 42 is electrically connected between the switch device 41 and the controller 70, and the controller 70 is configured to send the driving signal relax _ EN2 to the switch driving module 42 to turn on the switch device 41 through the switch driving module 42.

In this embodiment, the intelligent connecting device 100 further includes a reverse connection detecting module 50 electrically connected to the load connecting terminal 30, and the reverse connection detecting module 50 is configured to detect an access state of the external load through the load connecting terminal 30 and output a corresponding control signal C _ EN according to a detection result. The control signal C _ EN comprises a first control signal and a second control signal.

In this embodiment, the reverse connection detection module 50 is further electrically connected to the key control module 82, and the reverse connection detection module 50 is further configured to send the control signal C _ EN to the key control module 82 to control an effective state of the key control module 82.

Specifically, the reverse connection detection module 50 outputs the first control signal when detecting that the external load is reversely connected to the load connection terminal 30, and outputs the first control signal to the key control module 82, so as to switch the state of the key control module 82 to the disabled state. When the key control module 82 is in the failure state, the key instruction cannot be generated, so that the key control module 82 cannot be forced to receive and respond to the key instruction, and thus, a user cannot force the controller 70 to output the driving signal relax _ EN2 through the key control module 82, so that the switching circuit 40 is kept in the off state, and further, the electrical connection between the battery assembly and the external load is disconnected, that is, the current output loop 11 in which the battery assembly discharges to the external load is cut off, so as to prohibit the battery assembly from discharging to the external load.

The reverse connection detection module 50 is further configured to output the second control signal when detecting that the load connection terminal 30 is unloaded or the external load is being connected to the load connection terminal 30, and output the second control signal to the key control module 82 to switch the state of the key control module 82 to an active state, so as to allow a user to input the key instruction through the key control module 82 to control the controller 70 to output the driving signal relax _ EN 2.

Since the user can force the controller 70 to output the driving signal relax _ EN2 through the key control module 82, when the external load is reversely connected to the load connection terminal 30, the state of the key control module 82 is switched to the failure state, and the user can be prohibited from inputting a key command to force the controller 70 to output the driving signal relax _ EN2, so that the battery pack is prohibited from discharging and outputting the external load, and thus, the power safety of the circuit can be ensured. In addition, the effective state of the key control module 82 is directly controlled by using the control signal output by the reverse connection detection module 50, so that the purposes of quickly responding to the first control signal corresponding to the reverse connection state of the external load and timely disconnecting the discharge output of the battery pack to the external load can be achieved.

The circuit structure and the operation principle of the reverse connection detection module 50 and the key control module 82 will be described with reference to fig. 3 and 4.

Referring to fig. 3, in the present embodiment, the reverse connection detection module 50 is a combined switch circuit composed of transistors, and includes a first detection terminal 51, a second detection terminal 52, a driving voltage input terminal 53, a control signal output terminal 54, a first transistor Q3, a second transistor Q6, and a third transistor Q1. The first detection terminal 51 is electrically connected to the load positive connection terminal CAR + and the second detection terminal 52 is electrically connected to the load negative connection terminal CAR-, as described above, and the load negative connection terminal CAR-is also electrically connected to the first ground terminal PGND. The driving voltage input terminal 53 is electrically connected to a voltage source VCC, and the reverse connection detection module 50 receives the driving voltage provided by the voltage source through the driving voltage input terminal 53, so that the reverse connection detection module 50 can work normally. Wherein the voltage source can be provided by a stabilized voltage VCC output from the stabilized voltage supply module 81 or by a battery assembly electrically connected to the power connection terminal 20. In this embodiment, the voltage source is provided by a regulated voltage VCC output by the regulated power supply module 81.

In this embodiment, the first transistor Q3 is electrically connected between the first detection terminal 51 and the control terminal 1 of the second transistor Q6, and the control terminal 1 of the first transistor Q3 is also electrically connected to the second detection terminal 52. The second transistor Q6 is electrically connected between a second ground terminal GND (power reference ground, i.e. power negative connection terminal) and the control terminal 1 of the third transistor Q1, and the control terminal of the second transistor Q6 is also electrically connected to the driving voltage input terminal 53 through a resistor R21. The third transistor Q1 is electrically connected between the second ground GND and the control signal output terminal 54, and the control terminal 1 of the third transistor Q1 is also electrically connected to the driving voltage input terminal 53 through a resistor R11.

Specifically, the control terminal 1 of the first transistor Q3 is electrically connected to the second detection terminal 52 through a resistor R22, and is electrically connected to the first connection terminal 2 of the first transistor Q3 through a resistor R4. The first connection terminal 2 of the first transistor Q3 is electrically connected to the first detection terminal 51 through a diode D1, wherein a cathode of the diode D1 is electrically connected to the first detection terminal 51, and an anode of the diode D1 is electrically connected to the first connection terminal 2 of the first transistor Q3. The second connection 3 of the first transistor Q3 is electrically connected to the control terminal 1 of the second transistor Q6 via a resistor R27. The control signal output terminal 54 is also electrically connected to the driving voltage input terminal 53 through a capacitor C6.

The first transistor Q3, the second transistor Q6, and the third transistor Q1 are transistors turned on at a high level, such as NMOS transistors or NPN transistors. In this embodiment, the first transistor Q3 is an NPN transistor, and the second transistor Q6 and the third transistor Q1 are NMOS transistors. It can be understood that the reverse connection detection module 50 implements a reverse connection detection function for the polarity of the external load by using a simple transistor (e.g., a diode, a triode, a field effect transistor) and a passive device (e.g., a resistor, a capacitor), so that the reverse connection state of the external load can be rapidly detected by using the characteristic that the transistor is fast in turning on and off, and the detection speed and effectiveness of the related protection function can be significantly improved.

In operation, if the external load is reversely connected to the load connection terminal 30, that is, the positive electrode of the external load is electrically connected to the load connection terminal CAR-, and the negative electrode of the external load is electrically connected to the load connection terminal CAR +, the control terminal 1 of the first transistor Q3 receives a high level signal from the positive electrode of the external load, so that the first transistor Q3 is turned on. The control terminal 1 of the second transistor Q6 receives a low level signal by being electrically connected to the negative electrode of the external load through the turned-on first transistor Q3, turning off the second transistor Q6. The control terminal 1 of the third transistor Q1 is electrically connected to the driving voltage input terminal 53 and is in a high state, so that the third transistor Q1 is turned on, the control signal output terminal 54 is electrically connected to the second ground terminal GND through the turned-on third transistor Q1 and is in a low state, and at this time, the control signal output terminal 54 outputs the first control signal, which is a low signal.

If the load connection terminal 30 is unloaded, or the external load is connected to the load connection terminal 30, that is, the positive electrode of the external load is electrically connected to the load positive connection terminal CAR +, and the negative electrode of the external load is electrically connected to the load negative connection terminal CAR —, the control terminal 1 of the first transistor Q3 is electrically connected to the first ground terminal PGND and receives a low level signal, so that the first transistor Q3 is turned off. The control terminal 1 of the second transistor Q6 is electrically connected to the driving voltage input terminal 53 through a resistor R21 to receive a high level signal, so that the second transistor Q6 is turned on. The control terminal 1 of the third transistor Q1 is electrically connected to the second ground terminal GND through the turned-on second transistor Q6 to be in a low level state, so that the third transistor Q1 is turned off, the control signal output terminal 54 is electrically connected to the driving voltage input terminal 53 to be in a high level state, and at this time, the control signal output terminal 54 outputs the second control signal, which is a high level signal.

Referring to fig. 4, in this embodiment, the controller 70 employs a microcontroller U2, the key control module 82 includes a key module S1 and a control switch Q8, the key module S1 is electrically connected between the control switch Q8 and the microcontroller U2, and the key module S1 is configured to receive a pressing operation of a user to generate a key instruction, where the key module S1 is in an active state and is capable of receiving the pressing operation of the user to generate the key instruction, and the key module S1 is in a failure state and is incapable of generating the key instruction.

In this embodiment, the key module S1 may be a mechanical physical key or a virtual key in the form of touch. The key module S1 allows a user to interact with the system of the smart connecting device 100 through physical or virtual touch keys.

The control terminal 1 of the control switch Q8 is electrically connected to the control signal output terminal 54 of the reverse connection detection module 50 through a resistor R26, so as to electrically connect the reverse connection detection module 50 to the key control module 82, and enable the reverse connection detection module 50 to output the control signal C _ EN (including the first control signal and the second control signal) to the control terminal 1 of the control switch Q8, so as to switch the on-off state of the control switch Q8, thereby controlling the active state of the key module S1.

In this embodiment, the control switch Q8 is a high-level conducting transistor, such as an NMOS transistor or an NPN transistor.

In operation, if the external load is reversely connected to the load connection terminal 30, as described above, the control signal output terminal 54 outputs the first control signal, wherein the first control signal is a low level signal, and the control switch Q8 enters the off state because its control terminal 1 receives the first control signal (low level signal) output by the control signal output terminal 54. The pull-down ground loop of the key module S1 is cut off due to the control switch Q8 being turned off, so that the key module S1 remains in the disabled state, and no key command can be generated, and thus the controller 70 cannot receive and respond to the key command, and thus, the user cannot force the controller 70 to output the driving signal relax _ EN2 through the key module S1, and the switch circuit 40 is not turned on, so as to disconnect the electrical connection between the battery assembly and the external load, and prohibit the battery assembly from discharging and outputting the external load.

If the load connection terminal is empty or the external load is connected to the load connection terminal 30, as described above, the control signal output terminal 54 outputs the second control signal, where the second control signal is a high level signal, and the control terminal 1 of the control switch Q8 enters a conducting state when receiving the second control signal (high level signal) output by the control signal output terminal 54, so as to conduct the pull-down grounding loop of the key module S1, so that the key module S1 can be kept in an active state and can receive a pressing operation of a user to generate the key command. In this way, the user can force the controller 70 to output the driving signal relax _ EN2 through the key module S1, so that the battery pack discharges and outputs the external load.

It is to be understood that, in the present embodiment, the control switch Q8 is in a conducting state by default in the normal state, so that the key module S1 is maintained in the active state in the normal state, so as to receive a pressing operation of a user in real time, thereby controlling the output of the controller 70.

According to the intelligent connecting device 100 provided by the application, the combined switch circuit composed of the transistors is used as the reverse connection detection module, so that the reverse connection state of an external load can be rapidly detected by utilizing the characteristic that the on-off speed of the transistors is high; the effectiveness of the key control module is directly controlled by using the control signal output by the reverse connection detection module, so that a user is prohibited from inputting a key instruction to force the controller 70 to output the driving signal RELAY _ EN2 for turning on the switch circuit 40 when an external load is reversely connected, and the purposes of rapidly responding to the control signal corresponding to the reverse connection state of the external load and timely controlling the discharge output of the battery pack to the external load can be achieved. It can be seen that the intelligent connecting device provided by the application can obviously improve the detection speed and effectiveness of the related protection function, so that the safety and reliability of the power output control system can be obviously improved. In addition, the intelligent connecting device provided by the application has the advantages that the key devices are low in cost, the peripheral circuit is simple and reliable, the material cost of the product is reduced, and meanwhile, the cost of manpower and material resources after the product is sold is saved.

It is understood that in other embodiments, the reverse connection detection module 50 may also use a detection circuit formed by a sensing device, for example, a photoelectric coupler, to implement the reverse connection detection function for the external load.

Referring to fig. 1 again, in this embodiment, the intelligent connecting device 100 further includes a reverse connection state indicating module 61 electrically connected to the reverse connection detecting module 50, and the reverse connection detecting module 50 is further configured to output the first control signal to the reverse connection state indicating module 61, so as to control the reverse connection state indicating module 61 to send an alarm signal to prompt a reverse connection alarm.

Referring again to fig. 3, the reverse connection status indication module 61 includes a display unit 611 and/or an alarm unit 612. The display unit 611 includes at least one light emitting diode or at least one liquid crystal display device, the display unit 611 is electrically connected to the reverse connection detection module 50, and the reverse connection detection module 50 is further configured to output the first control signal to the display unit 611, so as to control the display unit 611 to emit light or display information for performing a reverse connection alarm prompt.

The alarm unit 612 comprises at least one buzzer or a loudspeaker, the alarm unit 612 is electrically connected with the reverse connection detection module 50, and the reverse connection detection module 50 is further configured to output the first control signal to the alarm unit 612 so as to control the alarm unit 612 to send out an alarm sound to prompt reverse connection alarm.

In this embodiment, the reverse connection status indicating module 61 includes the display unit 611 and the alarm unit 612, the display unit 611 includes a light emitting diode LED2, and the alarm unit 612 includes a speaker LS 1. The LED2 and the alarm unit 612 are electrically connected in parallel between the voltage source and the second connection terminal 3 of the third transistor Q1, the anode of the LED2 is electrically connected to the voltage source VCC, and the cathode of the LED2 is electrically connected to the second connection terminal 3 of the third transistor Q1 through a resistor R16. The loudspeaker LS1 is electrically connected to the second connection 3 of the third transistor Q1 via a resistor R10.

In operation, if the external load is reversely connected to the load connection terminal 30, as described above, the third transistor Q1 is turned on, so as to turn on the loop where the light emitting diode LED2 and the speaker LS1 are located, so that the light emitting diode LED2 emits light and the speaker LS1 emits an alarm sound to prompt that the external load is reversely connected to the load connection terminal 30.

If the load connection 30 is unloaded or the external load is connected to the load connection 30, as described above, the third transistor Q1 is turned off, so as to cut off the loop in which the LED2 and the speaker LS1 are located, so that the LED2 does not emit light and the speaker LS1 does not emit an alarm sound.

The intelligent connecting device 100 provided by the present application directly controls the working state of the reverse connection state indicating module 61 by using the control signal output by the reverse connection detecting module 50, so as to achieve the purpose of rapidly responding to the first control signal corresponding to the reverse connection state of the external load and providing the alarm prompt of the reverse connection state for the user in time, so that the user can timely adjust the electrical connection between the intelligent connecting device 100 and the external load.

Referring to fig. 1 again, in the present embodiment, the intelligent connecting device 100 further includes a load voltage detection module 83 electrically connected to the load connection terminal, and the load voltage detection module 83 is configured to detect a load voltage of the external load through the load connection terminal 30 and output a corresponding load voltage signal.

The controller 70 is further electrically connected to the load voltage detection module 83, and the controller 70 is further configured to receive a load voltage signal output by the load voltage detection module 83 when the controller is in the automatic output mode, and determine an access state and a voltage change state of the external load according to the load voltage signal. The controller 70 is further configured to output a driving signal relax _ EN2 to the switch circuit 40 to turn on the switch circuit 40 in the energized active state when it is determined that the external load is connected to the load connection terminal 30 and the load voltage of the external load satisfies a preset condition, so as to enable the battery assembly to be electrically connected to the external load and perform a discharging output on the external load.

Taking the external load as an automobile battery and the battery assembly as a battery assembly of a starting power supply as an example, in an embodiment, the controller 70 is configured to determine whether the amplitude of the voltage value of the automobile battery falling within a preset time exceeds a preset amplitude threshold according to the load voltage signal received within the preset time, that is, determine whether the voltage of the automobile battery falls. The controller 70 is further configured to determine that the load voltage of the car battery meets the preset condition when determining that the amplitude of the voltage value of the car battery falling within the preset time exceeds the preset amplitude threshold, that is, the voltage of the car battery falls and the slope of the voltage fall reaches a preset falling slope, so as to output the driving signal relax _ EN2 to turn on the switch circuit 40, so that the starting power supply provides power for the car battery. It can be understood that, if the voltage value of the car battery decreases by more than the preset amplitude threshold value within the preset time, that is, the voltage of the car battery drops, indicating that the car battery is used for starting the car, at this time, the starting power supply can be used to provide power for the car battery by turning on the switch circuit 40, so as to start the car. It will be appreciated that the controller 70 will only turn on the switch circuit 40 when the vehicle battery is used to start the vehicle, thus conserving the amount of power in the starting power supply and ensuring that the vehicle can be started.

In another embodiment, the controller 70 is configured to determine whether a voltage value of the automobile battery is smaller than a preset voltage threshold according to the received load voltage signal, determine whether a reduced amplitude of the voltage value of the automobile battery within a preset time exceeds a preset amplitude threshold according to the load voltage signal received within the preset time when it is determined that the voltage value of the automobile battery is smaller than the preset voltage threshold, and determine that the load voltage of the automobile battery meets the preset condition when it is determined that the reduced amplitude of the voltage value of the automobile battery within the preset time exceeds the preset amplitude threshold, so as to output the driving signal relax _ EN2 to turn on the switch circuit 40, so that the starting power supply provides power for the automobile battery. It can be understood that, if the voltage value of the automobile battery is smaller than the preset voltage threshold, it indicates that the electric quantity of the automobile battery is insufficient and the automobile battery is in a power-deficient state. If the voltage value of the automobile battery is reduced within the preset time by more than the preset amplitude threshold value, the automobile battery is used for starting the automobile. So, controller 70 is only in intelligent connecting device 100 just connects with the car battery of insufficient voltage just the car battery just switches on when being used for starting the car switching circuit 40, both can practice thrift the electric quantity of starting power supply, ensures again that the car can be started, can also prevent simultaneously the car battery gives the starting power supply is reverse to charge.

In one embodiment, the intelligent connection device 100 may further include a load connection status indication module 60, and the load connection status indication module 60 may include a forward connection status indication module 62 and a reverse connection status indication module 61. The controller 70 may also control the forward connection status indication module 62 to send an indication signal to provide a corresponding operation status indication to a user when it is determined that the external load is being connected to the load connection terminal 30. Wherein, the forward connection status indication module 62 may include at least one light emitting diode or at least one buzzer.

In the present embodiment, the controller 70 may be a Programmable controller device, such as a Micro-controller Unit (MCU), a Programmable logic Array (FPGA), a Digital Signal Processor (DSP), or the like. The controller 70 is used as a logic operation and control center of the intelligent connection device 100 and mainly responsible for data acquisition and conversion, logic operation, data communication, execution of drive output and other functions, and power supply of the controller 70 is from the stabilized voltage VCC output by the stabilized voltage supply module 81.

In this embodiment, as shown in fig. 4, the controller 70 may be a microcontroller U2, and may include a plurality of input/output ports, and the controller 70 may communicate and exchange information with other functional modules or external devices through the plurality of input/output ports, so as to implement functions of connection, driving, and control of the intelligent connection device 100.

In this embodiment, please refer to fig. 1 again, the intelligent connecting apparatus 100 may further include a communication interface module (not shown) electrically connected to the controller 70, and the controller 70 may perform communication connection with external devices (external power supply device, external load) through the communication interface module to obtain a current battery voltage, a maximum current output capacity, a battery temperature, an operating state, software version information, and the like of a battery assembly of the external power supply device, and determine whether an electrical parameter of the battery assembly of the external power supply device satisfies a condition for discharging and outputting to the external load according to the obtained related information, so as to determine whether to output the driving signal relax _ EN2 to turn on the switch circuit 40. It is understood that the controller 70 may also send its own software version information, the normal and abnormal operating states of the intelligent connection device 100, the voltage and output current signals of the external load, etc. to the external power supply device for adaptation and related protection. That is, the controller 70 of the smart connecting device 100 can perform information interaction with an external device through the communication interface module and perform corresponding control.

It is understood that, when the communication timeout provided by the communication interface module is interrupted or the data exchange information is abnormally signaled, or the voltage provided by the external power supply device is not within the threshold range set by the program, the controller 70 stops outputting the driving signal relax _ EN2, so as to open the switch circuit 40 to cut off the current output circuit 11, and simultaneously outputs the corresponding status indication to ensure the safety of the system and the external device.

Optionally, the smart connection device 100 further includes a temperature detection module 84 electrically connected to the controller 70, where the temperature detection module 84 is configured to detect an operating temperature of the switch device 41 and/or the built-in battery assembly, and feed back the detected temperature value to the controller 70. The controller 70 also analyzes whether the operating temperature of the switching device 41 and/or the built-in battery assembly exceeds a preset threshold value according to the received temperature value, and when it is analyzed that the operating temperature of the switching device 41 and/or the built-in battery assembly exceeds the preset threshold value, the output of the driving signal relax _ EN2 is suspended, so that the switching circuit 40 is opened to cut off the current output loop 11, and the safety of the system operation is ensured.

Optionally, the intelligent connecting device 100 further includes a current detection module 85 electrically connected between the power connection terminal 20 and the load connection terminal 30, and the current detection module 85 is further electrically connected to the controller 70. The current detection module 85 is configured to collect the current in the current output circuit 11, that is, the discharge current output by the battery assembly to the external load, in real time during the on-state of the switch circuit 40, and feed back the detected current sampling signal to the controller 70. In this embodiment, the current detection module 85 is electrically connected between the power supply negative connection terminal BAT-and the load negative connection terminal CAR-. In other embodiments, the current detection module 85 may also be electrically connected between the power positive connection terminal BAT + and the load positive connection terminal BAT +. The controller 70 also analyzes whether the discharge output of the battery assembly is normal according to the received current sampling signal, and when the discharge output of the battery assembly is analyzed to be abnormal, the output of the driving signal relax _ EN2 is suspended, so that the switching circuit 40 is switched off to cut off the current output loop 11, and the safety of the system operation is ensured.

Optionally, the intelligent connection device 100 further includes an overcurrent and short-circuit protection module 86, the overcurrent and short-circuit protection module 86 is electrically connected to the current detection module 85 and the controller 70, respectively, and the overcurrent and short-circuit protection module 86 is configured to monitor whether a current sampling signal output by the current detection module 85 exceeds a preset current threshold, and output an interrupt trigger signal to the controller 70 when the current sampling signal is monitored, so that the controller 70 immediately suspends outputting the driving signal, thereby realizing a quick disconnection of the switch circuit 40 to cut off the current output loop 11, and ensuring the safety of system operation. In other embodiments, the output of the over-current and short-circuit protection module 86 may also be directly connected to the switching circuit 40, so as to directly open the switching circuit 40 when the current sampling signal is monitored.

It will be understood by those skilled in the art that the foregoing schematic diagram 1 is merely an example of the intelligent connection device 100 for implementing the functions of detecting the connection state of the external load and outputting the discharge of the external load by the battery assembly, and does not constitute a limitation to the intelligent connection device 100, and the intelligent connection device 100 may include more or less components than those shown, or combine some components, or different components.

Referring to fig. 5-6, the present application further provides a start-up power supply 200 using the intelligent connecting device 100. As shown in fig. 5, the starting power supply 200 includes a housing 201, a battery pack 202, and the above-mentioned smart connecting device 100. Among them, at least some of the structures of the battery pack 202 and the intelligent connecting device 100, such as the power connection terminal 20, the load connection terminal 30, the switch circuit 40, the driving power module 43, the reverse connection detection module 50, the controller 70, the regulated power supply module 81, the load voltage detection module 83, the temperature detection module 84, the current detection module 85, the over-current and short-circuit protection module 86, etc., may be disposed in the housing 201, and at least some of the structures of the intelligent connecting device 100, such as the load connection state indication module 60, the key module S1, etc., may be disposed on the housing 201.

In this embodiment, the starting power supply 200 further includes a charging interface 204 disposed on the housing 201, and the charging interface 204 is configured to be electrically connected to an external power source, such as a mains power supply, so as to receive power from the external power source to charge the battery assembly 202. The types of the charging interface 204 include, but are not limited to, a DC interface, a USB interface, a Micro USB interface, a Mini USB interface, a Type-a interface, and a Type-C interface.

The power connection terminal 20 of the smart connecting device 100 is electrically connected to the battery pack 202 of the starting power supply 200.

In this embodiment, as shown in fig. 5 to 6, the starting power supply 200 further includes a connection port 203 disposed on the housing 201, the connection port 203 is electrically connected to the load connection terminal 30 of the smart connection device 100, and the connection port 203 is used for being electrically connected to the external load by connecting an external connection member 400, that is, one end of the connection member 400 is detachably connected to the connection port 203, and the other end is detachably connected to the external load. The external structure of the starting power supply 200 may adopt the structure of the starting power supply 200 shown in fig. 6 or other structures, and the external structure of the starting power supply 200 is not specifically limited in this application.

In the present embodiment, the connection member 400 is a clip including a first clip 401, a second clip 402, a cable 403, and a connection terminal 404, the cable 403 being used to connect the first clip 401 and the second clip 402 to the connection terminal 404, respectively. The connection terminal 404 is detachably and electrically connected to the connection port 203. The first clip 401 is used for clamping the positive pole of the external load, the second clip 402 is used for clamping the negative pole of the external load, and the positive pole and the negative pole of the external load are electrically connected with the load positive connection terminal CAR + and the load negative connection terminal CAR-of the load connection terminal 30 in a one-to-one correspondence manner through the first clip 401 and the second clip 402, the connection terminal 404 and the connection port 203.

Alternatively, in another embodiment, as shown in fig. 7-8, the starting power supply 200' further includes a connection element 205, wherein one end of the connection element 205 is electrically connected to the load connection terminal 30 of the smart connection device 100, and the other end is used for electrically connecting to the external load. That is, one end of the connection member 205 is built in the starting power supply 200'. In the other embodiment, the connector 205 is a wire clip. The structure of the connecting element 205 is similar to that of the connecting element 400 except that the connecting element 404 is not included, and the description thereof is omitted.

By using the above intelligent connection device 100, the start power supplies 200 and 200' provided by the present application can utilize the control signal output by the reverse connection detection module to directly control the validity of the key control module, so that the user is prohibited from inputting a key instruction to force the controller to output a driving signal for turning on the switch circuit when the external load is reversely connected, thereby achieving the purpose of rapidly responding to the first control signal corresponding to the reverse connection state of the external load and timely disconnecting the discharge output of the battery pack to the external load, and further remarkably improving the detection speed and validity of the related protection function, and further remarkably improving the safety and reliability of the power output control system. In addition, the intelligent connecting device provided by the application has the advantages that the cost of key devices is low, the peripheral circuit is simple and reliable, the material cost of the starting power supply 200 or 200' can be reduced, and the cost of manpower and material resources after the product is sold can be saved.

Referring to fig. 9-10, the present application further provides a battery clamp 300 using the above-mentioned intelligent connecting device 100. The battery clamp 300 includes a housing 301, a power input interface 302, a connector 303, and the above-mentioned intelligent connecting device 100. The power input interface 302 is disposed on the housing 301, and the power input interface 302 is configured to be electrically connected to an external power device 500, such as an emergency starting power supply, where the external power device 500 includes a battery assembly (not shown). In this embodiment, the power input interface 302 is a connection terminal, the external power supply device 500 further includes a connection port 501 adapted to the power input interface 302 of the battery holder 300, and the battery holder 300 is electrically connected to the external power supply device 500 by detachably electrically connecting the power input interface 302 and the connection port 501.

At least some of the structures of the intelligent connection device 100, such as the power connection terminal 20, the load connection terminal 30, the switch circuit 40, the driving power module 43, the reverse connection detection module 50, the controller 70, the regulated power supply module 81, the load voltage detection module 83, the temperature detection module 84, the current detection module 85, the over-current and short-circuit protection module 86, etc., may be disposed in the housing 301, and at least some of the structures of the intelligent connection device 100, such as the load connection state indication module 60, the key control module 82, etc., may be disposed on the housing 301.

The power connection terminal 20 of the intelligent connection device 100 is electrically connected to the power input interface 302, and is electrically connected to the battery pack of the external power supply 500 through the power input interface 302.

One end of the connecting member 303 is electrically connected to the load connecting terminal 30 of the smart connecting device 100, and the other end is used for electrically connecting to an external load. In this embodiment, the connecting member 303 is a wire clamp. The structure of the connector 303 is similar to that of the connector 400 except that the connector 303 does not include the connection terminal 404, and is not described herein again.

The appearance structure of the battery clamp 300 may adopt the structure of the battery clamp 300 shown in fig. 10 or other structures, and the appearance structure of the battery clamp 300 is not specifically limited in this application.

By using the above-mentioned intelligent connection device 100, the battery clamp 300 provided by the present application can utilize the control signal output by the reverse connection detection module to directly control the validity of the key control module, so that a user is prohibited from inputting a key instruction to force the controller to output a driving signal for turning on the switch circuit when an external load is reversely connected, thereby achieving the purpose of rapidly responding to the first control signal corresponding to the reverse connection state of the external load and timely disconnecting the discharge output of the battery pack to the external load, and further significantly improving the detection speed and validity of the related protection function, and further significantly improving the safety and reliability of the power output control system. In addition, the key device of the intelligent connecting device 100 provided by the application has low cost and the peripheral circuit is simple and reliable, so that the material cost of the battery clamp 300 can be reduced, and the after-sale labor and material cost of the product can be saved.

Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present application and not for limiting, and although the present application is described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. An intelligent connection device comprising:

the power supply connecting end is used for being electrically connected with the battery pack;

a load connection terminal for electrically connecting with an external load;

a switch circuit electrically connected between the power connection terminal and the load connection terminal;

the controller is electrically connected with the switching circuit, and the switching circuit enters a conducting state when receiving a driving signal output by the controller;

the key control module is electrically connected with the controller and can receive the pressing operation of a user to generate a key instruction when being in an effective state so as to force the controller to output the driving signal; and

the reverse connection detection module is electrically connected with the load connecting end and the key control module respectively, and is used for detecting the access state of the external load through the load connecting end, outputting a first control signal when detecting that the external load is reversely connected to the load connecting end, and outputting the first control signal to the key control module so as to switch the state of the key control module to a failure state; when the key control module is in a failure state, the key instruction cannot be generated, so that the controller cannot be forced to output the driving signal, the switching circuit is kept in a disconnected state, and the battery assembly is disconnected from the external load so as to prohibit the battery assembly from discharging and outputting the external load.

2. The intelligent connecting device according to claim 1, further comprising a reverse connection status indicating module electrically connected to the reverse connection detecting module, wherein the reverse connection detecting module is further configured to output the first control signal to the reverse connection status indicating module to control the reverse connection status indicating module to send out an alarm signal to prompt a reverse connection alarm.

3. The intelligent connecting device according to claim 2, wherein the reverse connection detecting module is further configured to output a second control signal when detecting that the load connecting terminal is empty or the external load is being connected to the load connecting terminal, and output the second control signal to the key control module, so as to switch the state of the key control module to an active state.

4. The intelligent connecting device according to claim 3, wherein the key control module comprises a key module and a control switch, the key module is electrically connected between the control switch and the controller, the key module is used for receiving a pressing operation of a user to generate a key instruction, wherein the key module can receive the pressing operation of the user to generate the key instruction when in an active state, and the key module cannot generate the key instruction when in a failure state;

the reverse connection detection module is electrically connected with the control end of the control switch and outputs the first control signal and the second control signal to the control end of the control switch so as to switch the on-off state of the control switch, thereby controlling the effective state of the key module;

the control switch enters a disconnection state when receiving a first control signal output by the reverse connection detection module, so that the key module is kept in a failure state, and the controller cannot receive and respond to the key instruction;

the control switch enters a conducting state when receiving a second control signal output by the reverse connection detection module, so that the key module is kept in an effective state and can receive the pressing operation of a user to generate the key instruction.

5. The smart connecting device of claim 4 wherein the reverse connection detection module is a combinational switching circuit comprised of transistors.

6. The smart connection device of claim 5 wherein the load connection terminals comprise a load positive connection terminal and a load negative connection terminal, wherein the load negative connection terminal is electrically connected to the first ground terminal;

the reverse connection detection module comprises:

the first detection end is electrically connected with the load positive connecting end;

the second detection end is electrically connected with the load negative connection end;

the reverse connection detection module receives the driving voltage provided by the voltage source through the driving voltage input end;

the control signal output end is electrically connected with the driving voltage input end; and

the circuit comprises a first transistor, a second transistor and a third transistor, wherein the first transistor is electrically connected between the first detection end and the control end of the second transistor, and the control end of the first transistor is also electrically connected with the second detection end; the second transistor is electrically connected between a second grounding end and the control end of the third transistor, and the control end of the second transistor is also electrically connected with the driving voltage input end through a resistor; the third transistor is electrically connected between a second ground terminal and the control signal output terminal, and the control terminal of the third transistor is also electrically connected with the driving voltage input terminal through a resistor;

the control end of the control switch is electrically connected with the control signal output end; the first transistor, the second transistor, the third transistor and the control switch are all transistors which are conducted in a high level mode;

when the external load is reversely connected to the load connection terminal, the first transistor is turned on, the second transistor is turned off, the third transistor is turned on, the control signal output terminal is in a low level state by being electrically connected to the second ground terminal through the turned-on third transistor, and outputs the first control signal, so that the control switch is brought into an off state, wherein the first control signal is a low level signal;

when the load connection terminal is idle or the external load is connected to the load connection terminal, the first transistor is turned off, the second transistor is turned on, the third transistor is turned off, the control signal output terminal is electrically connected to the driving power input terminal and is in a high level state, and the second control signal is output, so that the control switch is turned on, wherein the second control signal is a high level signal.

7. The intelligent connecting device according to claim 4, wherein the reverse connection detection module is a detection circuit formed by a sensing device, wherein the sensing device comprises an opto-coupler.

8. The intelligent connecting device according to any one of claims 1-7, further comprising a load voltage detection module, wherein the load voltage detection module is electrically connected to the load connection terminal and the controller, respectively, and is configured to detect a load voltage of the external load through the load connection terminal, output a corresponding load voltage signal, and feed back the detected load voltage to the controller;

the controller is further used for receiving a load voltage signal fed back by the load voltage detection module and determining an access state and a voltage change state of the external load according to the load voltage signal;

the controller is further configured to output the driving signal to the switching circuit to turn on the switching circuit when it is determined that the external load is connected to the load connection terminal and the load voltage of the external load satisfies a preset condition, so that the battery pack can be electrically connected to the external load and perform discharge output on the external load.

9. The smart connecting device of claim 8 wherein the switching circuit comprises:

a switching device electrically connected between the power connection terminal and the load connection terminal; and

the controller is further used for outputting the driving signal to the switch driving module so as to conduct the switch device through the switch driving module.

10. The intelligent connection device according to claim 6, further comprising a regulated power supply module electrically connected to the power connection terminal, the regulated power supply module being configured to receive an input voltage of the battery pack via the power connection terminal and to perform voltage conversion on the input voltage to output a regulated voltage;

wherein the voltage source is provided by a stabilized voltage output from the stabilized voltage power supply module or by a battery pack electrically connected to the power connection terminal.

11. The intelligent connection device according to claim 10, further comprising a driving power module electrically connected to the switching circuit, the driving power module being configured to provide driving power to the switching circuit;

the driving power supply module is electrically connected with the power supply connecting end, and the driving power supply of the switching circuit is provided by a battery assembly electrically connected to the power supply connecting end; or the driving power supply module is electrically connected with the stabilized voltage power supply module, and the driving power supply of the switching circuit is provided by the stabilized voltage output by the stabilized voltage power supply module.

12. The intelligent connection device according to any one of claims 2-7, wherein the reverse connection status indication module comprises:

the display unit is electrically connected with the reverse connection detection module, and the reverse connection detection module is also used for outputting the first control signal to the display unit so as to control the display unit to emit light or display information to perform reverse connection alarm prompt; and/or

And the alarm unit is electrically connected with the reverse connection detection module, and the reverse connection detection module is also used for outputting the first control signal to the alarm unit so as to control the alarm unit to send out an alarm sound to perform reverse connection alarm prompt.

13. A starting power supply comprising:

a housing;

a battery assembly; and

the smart connector assembly of any of claims 1-12, wherein the battery pack and at least a portion of the smart connector assembly are disposed within the housing, and wherein the power connection of the smart connector assembly is electrically coupled to the battery pack of the start-up power source.

14. The starting power supply according to claim 13, further comprising a connection port provided on the case, the connection port being electrically connected to a load connection terminal of the smart connector, the connection port being adapted to be electrically connected to an external load by connecting an external connection member; or

The starting power supply further comprises a connecting piece, one end of the connecting piece is electrically connected with the load connecting end of the intelligent connecting device, and the other end of the connecting piece is used for being electrically connected with the external load.

15. A battery clamp, comprising:

a housing;

the power input interface is arranged on the shell and is used for being electrically connected with external power supply equipment, wherein the external power supply equipment comprises a battery assembly;

the intelligent connecting device according to any one of claims 1 to 12, wherein at least a part of the structure of the intelligent connecting device is disposed in the housing, and a power supply connecting terminal of the intelligent connecting device is electrically connected to the power supply input interface and is electrically connected to a battery assembly of the external power supply equipment through the power supply input interface; and

and one end of the connecting piece is electrically connected with the load connecting end of the intelligent connecting device, and the other end of the connecting piece is used for being electrically connected with an external load.