Smart connect device, start power supply and battery clamp

Abstract

The application provides a kind of intelligent connection device, starting power supply and battery clamp.The intelligent connection device includes switch device, switch drive module, enable control module and reverse connection detection module.When the reverse connection detection module detects that the external load is reversely connected to the load connection end, a first control signal is output to control the enable control module to output an enable control signal to switch the state of the switch drive module to an invalid state, so that the switch drive module cannot turn on the switch device, and the battery assembly connected to the power supply connection end is prevented from discharging output to the external load.The intelligent connection device directly controls the output of the enable control signal through the reverse connection detection module to control the effectiveness of the switch drive module, thereby controlling the on-off state of the switch device.In this way, the discharge output of the battery assembly to the external load can be quickly disconnected in response to the reverse connection state of the external load, thereby improving the detection speed and effectiveness of the related protection function.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronics, and in particular to an intelligent connection device, a starting power supply and a battery clamp. BACKGROUND

[0002] Most emergency starting power supply products on the market can realize the emergency starting output function for the ignition of the engine of a car, but most of the similar products do not have the function of automatically identifying the connection polarity. Some users cannot correctly distinguish the electrical connection polarity between the external load and the output port of the starting power supply during the electrical connection operation with the external load such as the battery of a car. When the polarity of the two is reversed, a short circuit occurs, which causes damage to the battery of the starting power supply or the external load, and even causes a fire, resulting in property damage, personal injury and other safety incidents.

[0003] Some starting power supplies on the market have polarity identification circuits or polarity reverse connection protection circuits, but most of them use photoelectric isolation devices as polarity detection devices. When the polarity is reversed, the photoelectric isolation device outputs a reverse connection level signal, and the controller (MCU) disconnects the discharge output loop of the starting power supply according to the reverse connection level signal. The controller also drives the corresponding state indication circuit to alarm and prompt.

[0004] However, the photoelectric isolation device and the controller have the application defects of high cost, easy to decay, long response time and easy to fail due to external interference. When the user reverses the polarity between the external load and the output port of the starting power supply, if the photoelectric isolation device fails or the transmission of the reverse connection level signal is abnormal, the controller often makes a false judgment, so it cannot accurately and timely respond to the reverse connection level signal to disconnect the discharge output of the starting power supply in time. As a result, the starting power supply or the external load is easily damaged. SUMMARY

[0005] In view of the application defects of the above connection polarity detection circuit and power supply output control system, the present application provides an intelligent connection device, a starting power supply and a battery clamp, which can quickly detect and respond to the reverse connection state of the external load to control the discharge output of the battery assembly to the external load in time, thereby improving the detection speed and effectiveness of the related protection function and the safety and reliability of the power supply output control system.

[0006] The first aspect of the present application provides a smart connection device, which comprises a power supply connection end, a load connection end, a switch circuit, an enable control module, and a reverse connection detection module. The power supply connection end is used to be electrically connected with a battery assembly. The load connection end is used to be electrically connected with an external load. The switch circuit comprises a switch device and a switch drive module electrically connected with the switch device, and the switch circuit is electrically connected between the power supply connection end and the load connection end. The switch drive module can turn on the switch device in response to a drive signal when in an active state. The enable control module is electrically connected with the switch drive module, and the enable control module is used to output an enable control signal to switch the state of the switch drive module to an inactive state. The reverse connection detection module is electrically connected with the load connection end and the enable control module, respectively. The reverse connection detection module is used to detect the connection state of the external load through the load connection end, and output a first control signal to the enable control module when detecting that the external load is reversely connected to the load connection end, so as to control the enable control module to output the enable control signal, thereby switching the state of the switch drive module to the inactive state. When the switch drive module is in the inactive state, the switch device cannot be turned on, so that the switch circuit remains in an open state, thereby disconnecting the electrical connection between the battery assembly and the external load, and prohibiting the battery assembly from discharging to the external load.

[0007] The second aspect of the present application provides a starting power supply, which comprises a housing, a battery assembly, and the smart connection device of the first aspect. The battery assembly and at least part of the structure of the smart connection device are arranged in the housing, and the power supply connection end of the smart connection device is electrically connected with the battery assembly of the emergency starting power supply.

[0008] The third aspect of the present application provides a battery clamp, which comprises a housing, a power supply input interface, a connecting piece, and the smart connection device of the first aspect. The power supply input interface is arranged on the housing, and is used to be 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 smart connection device is arranged in the housing, the power supply connection end of the smart connection device is electrically connected with the power supply input interface, and is electrically connected with the battery assembly of the external starting power supply through the power supply input interface. One end of the connecting piece is electrically connected with the load connection end of the smart connection device, and the other end is used to be electrically connected with an external load.

[0009] The intelligent connection device provided in this application directly controls the output of the enable control signal by utilizing the control signal output by the reverse connection detection module, thereby controlling the effectiveness of the switch drive module and controlling the on / off state of the switch device. This achieves rapid response to the control signal corresponding to the reverse connection state of the external load and timely disconnection of the battery assembly from the external load. It can significantly improve the detection speed and effectiveness of related protection functions, and thus significantly improve the safety and reliability of the power output control system. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0011] Figure 1 A schematic diagram of the functional modules of an intelligent connection device provided for an embodiment of this application.

[0012] Figure 2 for Figure 1 The diagram shows the circuit structure of the current output loop of the intelligent connection device.

[0013] Figure 3 for Figure 1 The circuit structure diagram of the reverse connection detection module, reverse connection status indication module and enable control module of the intelligent connection device shown is shown.

[0014] Figure 4 for Figure 1 The diagram shows the structure of the controller.

[0015] Figure 5 This is a schematic diagram of a functional module of a startup power supply provided in one embodiment of this application.

[0016] Figure 6 for Figure 5 The diagram shows a schematic of one type of starting power supply.

[0017] Figure 7 A schematic diagram of a functional module of a startup power supply provided for another embodiment of this application.

[0018] Figure 8 for Figure 7 The diagram shows a schematic of one type of starting power supply.

[0019] Figure 9 A schematic diagram of the functional modules of a battery clamp provided for an embodiment of this application.

[0020] Figure 10 For Figure 9 A structural schematic diagram of the battery clamp shown.

[0021] Main component symbol explanation

[0022] Intelligent connection device 100

[0023] Current output circuit 11

[0024] Power connection end 20

[0025] Power positive connection end BAT+

[0026] Power negative connection end BAT-

[0027] Load connection end 30

[0028] Load positive connection end CAR+

[0029] Load negative connection end CAR-

[0030] First ground end PGND

[0031] Switching circuit 40

[0032] Switching device 41

[0033] Switching drive module 42

[0034] Drive signal input end 421

[0035] Enable control signal input end 422

[0036] Switching unit Q2

[0037] Resistors R2, R3, R17

[0038] Diode D6

[0039] Drive power module 43

[0040] Enable control module 44

[0041] Enable control signal output end 441

[0042] Control switch Q8

[0043] Reverse connection detection module 50

[0044] First detection end 51

[0045] Second detection end 52

[0046] Drive voltage input end 53

[0047] Control signal output end 54

[0048] First transistor Q3

[0049] Second transistor Q6

[0050] Resistors R4, R5, R21, R22, R27

[0051] Diode D1

[0052] Second ground end GND

[0053] Load connection state indication module 60

[0054] Reverse connection state indication module 61

[0055] Switching unit Q1

[0056] Display unit 611

[0057] Light emitting diode LED2

[0058] Alarm unit 612

[0059] Loudspeaker LS1

[0060] Resistors R10, R11, R16

[0061] Zener diode D9

[0062] Capacitor C6

[0063] Positive connection state indication module 62

[0064] Controller 70

[0065] Microcontroller U2

[0066] Voltage stabilizing power supply module 81

[0067] Key control module 82

[0068] Load voltage detection module 83

[0069] Temperature detection module 84

[0070] Current detection module 85

[0071] Overcurrent and short circuit protection module 86

[0072] Starting power supply 200, 200'

[0073] Housing 201, 201'

[0074] Battery assembly 202

[0075] Connection port 203

[0076] Charging interface 204

[0077] Battery clamp 300

[0078] Housing 301

[0079] Power input interface 302

[0080] Connection 400, 205, 303

[0081] First wire clamp 401

[0082] Second wire clamp 402

[0083] Cable 403

[0084] Connection terminal 404

[0085] External power supply device 500

[0086] Connection port 501

[0087] The following detailed description will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0088] The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the drawings in the embodiments of the present application. The drawings are only used for illustrative purposes, and the representation is a schematic diagram and cannot be understood as a limitation of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0089] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the art. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application.

[0090] The present application provides a kind of intelligent connection device, the control signal output by the reverse connection detection module is directly controlled to enable control signal output, to control the effectiveness of switch driving module, to control the on-off state of switch device, in turn, it can quickly respond to the control signal corresponding to the external load reverse connection state, and in time control battery pack to the discharge output of the external load.Therein, the intelligent connection device can be applied to emergency starting power supply, it can also be applied to battery clamp.

[0091] Figure 1A functional module schematic diagram of an intelligent connection device is provided in the present application. As shown in Figure 1 The intelligent connection device 100 comprises a power connection end 20, a load connection end 30 and a switch circuit 40. The power connection end 20 is used to be electrically connected with a battery assembly (not shown in the figure). The load connection end 30 is used to be electrically connected with an external load (not shown in the figure). The switch circuit 40 is electrically connected between the power connection end 20 and the load connection end 30.

[0092] Please refer to Figure 1 and Figure 2 together. The power connection end 20, the load connection end 30 and the switch circuit 40 constitute a current output loop 11 for discharging the external load by the battery assembly. The switch circuit 40 is used to turn on or turn off the current output loop 11. In this way, the battery assembly can discharge the external load through the intelligent connection device 100.

[0093] In the embodiment, the power connection end 20 comprises a power positive connection end BAT+ and a power negative connection end BAT-. The power positive connection end BAT+ and the power negative connection end BAT- are used to be electrically connected with the positive and negative poles of the battery assembly one by one. The battery assembly is connected into the intelligent connection device 100 through the power connection end 20, thereby providing working voltage for the intelligent connection device 100 and providing power for the external load through the switch circuit 40. It can be understood that when the intelligent connection device 100 is applied to an emergency starting power supply, the battery assembly can be a built-in battery assembly of the emergency starting power supply. When the intelligent connection device 100 is applied to a battery clamp, the battery assembly can be a battery assembly of an external power supply device, such as an external emergency starting power supply or other energy storage power supply device.

[0094] The load connection end 30 includes a load positive connection end CAR+ and a load negative connection end CAR-, wherein the load positive connection end CAR+ and the load negative connection end CAR- are used to be electrically connected one-to-one with the positive electrode and the negative electrode of the external load, and the load negative connection end CAR- is further electrically connected with the first ground end PGND. The external load can be a car battery or a car engine. It can be understood that the car battery includes but is not limited to a lead-acid battery, a lithium battery, a super capacitor, etc. For example, assuming that the battery assembly is a battery assembly included in an external emergency starting power supply, and the external load is a car battery or a car engine, when the external emergency starting power supply is correctly connected into the intelligent connection device 100 through the power supply connection end 20, and the external load is correctly connected into the load connection end 30, the external emergency starting power supply can start discharge output through the current output loop 11 composed of the power supply connection end 20, the switch circuit 40 and the load connection end 30, that is, provide emergency starting power supply for the car battery or the car engine. Here, it can also be understood that the external emergency starting power supply charges the car battery or the car engine, so that the car can be started when the car battery or the car engine is insufficient.

[0095] Please refer again to Figure 1 The intelligent connection device 100 further includes a voltage stabilizing power supply module 81 electrically connected with the power supply connection end 20, which is used to receive the input voltage of the battery assembly through the power supply connection end 20, and convert the input voltage to output a stable voltage VCC, such as a 5V direct current voltage, to provide a stable power supply voltage for each functional module of the intelligent connection device 100. For example, when the external emergency starting power supply is correctly connected into the intelligent connection device 100 through the power supply connection end 20, the voltage stabilizing power supply module 81 can obtain the input voltage to normally work, and output the stable 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 work. The voltage stabilizing power supply module 81 can adopt a DC-DC converter or a linear voltage stabilizer, such as a low dropout regulator (LDO).

[0096] In the embodiment, the smart connection device 100 further comprises a driving power module 43 electrically connected to the switch circuit 40, which is configured to provide driving power for the switch circuit 40, so as to keep the switch circuit 40 in a powered and active state. In the embodiment, the on-off state of the switch circuit 40 can be controlled only when the switch circuit 40 is in the powered and active state, while when the switch circuit 40 is in a powered-off state, the switch circuit 40 is automatically turned off and deactivated, and the on-off state thereof cannot be controlled. It should be noted that the "deactivation" of the switch circuit 40 referred to herein means that the switch circuit 40 is prohibited from responding to relevant signals, such as a driving signal, i.e., the switch circuit 40 is in an inactive state that is not controlled by the relevant signals.

[0097] In an embodiment, the driving power module 43 is electrically connected to the power connection end 20, and the driving power of the switch circuit 40 is provided by a battery assembly electrically connected to the power connection end 20. Alternatively, in other embodiments, the driving power module 43 can also be electrically connected to the voltage stabilizing module 81, and the driving power of the switch circuit 40 is provided by the stable voltage VCC output by the voltage stabilizing module 81.

[0098] The smart connection device 100 further comprises a controller 70 electrically connected to the switch circuit 40, which is configured to output a driving signal RELAY_EN2 to the switch circuit 40, so as to turn on the switch circuit 40 in the powered and active state, i.e., the switch circuit 40 enters the on 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 discharge output to the external load.

[0099] In the embodiment, the smart connection device 100 further comprises a key control module 82 electrically connected to the controller 70, which can receive a pressing operation of a user to generate a key instruction, so as to force the controller 70 to output the driving signal RELAY_EN2, thereby realizing the discharge output of the battery assembly to the external load.

[0100] It can be understood that the working mode of the controller 70 can include an automatic output mode and a forced output mode. In an embodiment, the controller 70 enters the automatic output mode by default after being powered on. When the controller 70 is in the automatic output mode, the controller 70 outputs the drive signal RELAY_EN2 only when it is determined that the external load is connected to the load connection end 30 and the voltage of the external load meets the preset condition. The controller 70 enters the forced output mode when the key instruction is received, and immediately outputs the drive signal RELAY_EN2 in response to the key instruction. In an embodiment, the controller 70 resumes the automatic output mode after outputting the drive signal RELAY_EN2 in response to the key instruction.

[0101] In the embodiment, the switch circuit 40 includes a switch device 41 and a switch drive module 42, wherein the switch device 41 is electrically connected between the power connection end 20 and the load connection end 30. In the embodiment, the switch device 41 is electrically connected between the power positive connection end BAT+ and the load positive connection end CAR+. In other embodiments, the switch device 41 can also be electrically connected between the power negative connection end BAT- and the load negative connection end CAR-. The switch device 41 can adopt an electromagnetic relay or a semiconductor power device, such as a MOSFET. In the embodiment, the switch device 41 adopts an electromagnetic relay K1.

[0102] The switch drive module 42 is electrically connected between the switch device 41 and the controller 70, and the controller 70 is configured to send the drive signal RELAY_EN2 to the switch drive module 42 to turn on the switch device 41 through the switch drive module 42. When the switch drive module 42 is in an active state, it can receive and respond to the drive signal RELAY_EN2 to turn on the switch device 41. When the switch drive module 42 is in an inactive state, it can only receive the drive signal RELAY_EN2 but cannot respond to the drive signal RELAY_EN2, so it cannot turn on the switch device 41.

[0103] In the embodiment, the intelligent connection device 100 further includes an enable control module 44 electrically connected to the switch drive module 42, and the enable control module 44 is configured to output an enable control signal REL_EN to switch the state of the switch drive module 42 to the inactive state.

[0104] In the embodiment, the intelligent connection device 100 further comprises a reverse connection detection module 50 electrically connected with the load connection end 30, the reverse connection detection module 50 is used for detecting the access state of the external load through the load connection end 30, and outputting a corresponding control signal C_EN according to the detection result. Wherein, the control signal C_EN includes a first control signal and a second control signal.

[0105] In the embodiment, the reverse connection detection module 50 is also electrically connected with the enable control module 44, and the reverse connection detection module 50 is also used for sending the control signal C_EN to the enable control module 44, so as to control the enable control module 44 to output the enable control signal REL_EN, or control the enable control module 44 to stop outputting the enable control signal REL_EN, so as to control the effectiveness of the switch driving module 42, and control the on-off state of the switch device 41.

[0106] Specifically, when the reverse connection detection module 50 detects that the external load is reversely connected to the load connection end 30, the reverse connection detection module 50 outputs the first control signal, and outputs the first control signal to the enable control module 44, so as to control the enable control module 44 to output the enable control signal REL_EN, thereby switching the state of the switch driving module 42 to an invalid state. Wherein, the switch driving module 42 cannot turn on the switch device 41 when it is in the invalid state, so that the switch circuit 40 remains in the off state, and the battery assembly is disconnected with the external load, that is, the current output loop 11 of the battery assembly to the external load is cut off, so as to prohibit the battery assembly from discharging output to the external load.

[0107] The reverse connection detection module 50 also outputs the second control signal when detecting that the load connection end 30 is empty or the external load is connected to the load connection end 30, and outputs the second control signal to the enable control module 44, so as to prohibit the enable control module 44 from outputting the enable control signal REL_EN, thereby switching the state of the switch driving module 42 to an effective state.

[0108] Since the user can force the controller 70 to output the drive signal RELAY_EN2 through the key control module 82, the state of the switch drive module 42 is switched to the invalid state when the external load is reversed to the load connection end 30, which can avoid the switch drive module 42 responding to the key instruction input by the user to force the controller 70 to output the drive signal RELAY_EN2, thereby prohibiting the battery assembly to discharge the external load, so as to ensure the power safety of the circuit. In addition, by using the control signal output by the reverse detection module 50 to control the active state of the switch drive module 42, the first control signal corresponding to the reverse state of the external load can be quickly responded, and the discharge output of the battery assembly to the external load is disconnected in time.

[0109] The circuit structure and working principle of the switch drive module 42, the enable control module 44, and the reverse detection module 50 will be introduced below. Figure 2 and Figure 3 The circuit structure and working principle of the switch drive module 42, the enable control module 44, and the reverse detection module 50 will be introduced below.

[0110] Please refer to Figure 2 In the embodiment, the switch drive module 42 includes a switch unit Q2, a drive signal input end 421, and an enable control signal input end 422. The switch unit Q2 is electrically connected to the power supply circuit of the switch device 41, and is used to control the on-off state of the power supply circuit. Wherein, the switch device 41 receives power supply when the power supply circuit is in the on state, and enters the on state. For example, the coil of the relay K1 receives power supply when the power supply circuit is on, so that the relay K1 remains in the on state due to the power supply of the coil.

[0111] The drive signal input end 421 is used to receive the drive signal RELAY_EN2, wherein the drive signal RELAY_EN2 is used to turn on the switch unit Q2. The enable control signal input end 422 is used to receive the enable control signal REL_EN to force the switch unit Q2 to be disconnected. In the embodiment, the switch unit Q2 responds to the enable control signal REL_EN when it receives the drive signal RELAY_EN2 and the enable control signal REL_EN at the same time.

[0112] Specifically, in the present embodiment, the first connection end 2 of the switch unit Q2 is electrically connected with the first ground end PGND, the second connection end 3 of the switch unit Q2 is electrically connected with the coil of the switch device 41 through the resistor R2, the control end 1 of the switch unit Q2 is electrically connected with the enable control signal input end 422 and the driving signal input end 421 through the resistor R17. The control end 1 of the switch unit Q2 is also electrically connected with the first ground end PGND through the resistor R3 and with the driving signal input end 421 through the diode D6, wherein the anode of the diode D6 is electrically connected with the control end 1 of the switch unit Q2 and the cathode is electrically connected with the driving signal input end 421. In the present embodiment, the switch unit Q2 is a transistor that is turned on by high level, such as NMOS or NPN triode, the enable control signal REL_EN is a low level signal, and the driving signal RELAY_EN2 is a high level signal, so as to ensure that the switch unit Q2 responds to the enable control signal REL_EN preferentially when receiving the driving signal RELAY_EN2 and the enable control signal REL_EN at the same time, and normally responds to the driving signal RELAY_EN2 in the normal state.

[0113] Please refer to Figure 3 In the present embodiment, the reverse connection detection module 50 is a combination switch circuit composed of transistors, including a first detection end 51, a second detection end 52, a driving voltage input end 53, a control signal output end 54, a first transistor Q3, and a second transistor Q6. The first detection end 51 is electrically connected with the load positive connection end CAR+, and the second detection end 52 is electrically connected with the load negative connection end CAR-, which is also electrically connected with the first ground end PGND as described above. The driving voltage input end 53 is electrically connected with the voltage source VCC, and the reverse connection detection module 50 receives the driving voltage provided by the voltage source through the driving voltage input end 53, so that the reverse connection detection module 50 can work normally. The voltage source VCC can be provided by the stable voltage VCC output by the voltage stabilizing power supply module 81 or by a battery assembly electrically connected to the power supply connection end 20. In the present embodiment, the voltage source is provided by the stable voltage VCC output by the voltage stabilizing power supply module 81.

[0114] In the 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 with the second detection terminal 52. The second transistor Q6 is electrically connected between the control signal output terminal 54 and the second ground terminal GND (power reference ground, i.e. power negative connection terminal), and the control terminal 1 of the second transistor Q6 is also electrically connected with the driving voltage input terminal 53 through the resistor R21, and the control signal output terminal 54 is also electrically connected to the driving voltage input terminal 53 through the resistor R5.

[0115] Specifically, the control terminal 1 of the first transistor Q3 is electrically connected to the second detection terminal 52 through the resistor R22, and is electrically connected to the first connection terminal 2 of the first transistor Q3 through the resistor R4. The first connection terminal 2 of the first transistor Q3 is electrically connected to the first detection terminal 51 through the diode D1, wherein the negative electrode of the diode D1 is electrically connected with the first detection terminal 51, and the positive electrode is electrically connected with the first connection terminal 2 of the first transistor Q3. The second connection terminal 3 of the first transistor Q3 is electrically connected to the control terminal 1 of the second transistor Q6 through the resistor R27.

[0116] The enable control module 44 includes an enable control signal output terminal 441 and a control switch Q8, and the enable control signal output terminal 441 is electrically connected with the enable control signal input terminal 422 of the switch driving module 42, so as to realize the electrical connection between the enable control module 44 and the switch driving module 42. The control switch Q8 is electrically connected between the enable control signal output terminal 441 and the ground terminal. The control terminal 1 of the control switch Q8 is electrically connected with the control signal output terminal 54, so as to realize the electrical connection between the enable control module 44 and the reverse connection detection module 50.

[0117] Among them, the first transistor Q3, the second transistor Q6, and the control switch Q8 all use high-level on transistors, such as NMOS tubes or NPN transistors. In the embodiment, the first transistor Q3 uses an NPN transistor, and the second transistor Q6 and the control switch Q8 both use NMOS tubes. It can be understood that the reverse connection detection module 50 realizes the polarity reverse connection detection function of the external load by using simple transistors (such as diodes, transistors, field effect tubes) and passive devices (such as resistors, capacitors), so as to rapidly detect the reverse connection state of the external load by using the fast on-off speed of the transistor, and then the detection speed and effectiveness of the related protection function can be significantly improved.

[0118] In operation, the reverse connection detection module 50 outputs the control signal C EN to the control terminal 1 of the control switch Q8 to switch the on-off state of the control switch Q8, thereby controlling the output state of the enable control module 44, and further controlling the validity of the switch drive module 42.

[0119] Specifically, if the external load is reversely connected to the load connection end 30, i.e., the positive electrode of the external load is electrically connected to the load negative connection end CAR-, and the negative electrode of the external load is electrically connected to the load positive connection end CAR+, the control terminal 1 of the first transistor Q3 receives a high-level signal from the positive electrode of the external load, and the first transistor Q3 is turned on. The control terminal 1 of the second transistor Q6 is electrically connected to the negative electrode of the external load through the turned-on first transistor Q3 and receives a low-level signal, and the second transistor Q6 is turned off. The control signal output end 54 is in a high-level state and is electrically connected to the drive voltage input end 53, and at this time, the control signal output end 54 outputs the first control signal, wherein the first control signal is a high-level signal.

[0120] At this time, the control switch Q8 is in a turned-on state due to the fact that its control terminal 1 receives the first control signal (high-level signal) output by the control signal output end 54 of the reverse connection detection module 50, and the enable control signal output end 441 is in a low-level state and is electrically connected to the second ground end through the turned-on control switch Q8, and at this time, the enable control signal output end 441 outputs the enable control signal REL EN.

[0121] If the load connection end 30 is empty or the external load is directly connected to the load connection end 30, i.e., the positive electrode of the external load is electrically connected to the load positive connection end CAR+, and the negative electrode of the external load is electrically connected to the load negative connection end CAR-, the control terminal 1 of the first transistor Q3 is electrically connected to the first ground end PGND and receives a low-level signal, and the first transistor Q3 is turned off. The control terminal 1 of the second transistor Q6 is electrically connected to the drive voltage input end 53 through the resistor R21 and receives a high-level signal, and the second transistor Q6 is turned on. The control signal output end 54 is in a low-level state and is electrically connected to the second ground end GND through the turned-on second transistor Q6, and at this time, the control signal output end 54 outputs the second control signal, wherein the second control signal is a low-level signal.

[0122] At this time, the control switch Q8 is in a turned-off state due to the fact that its control terminal 1 receives the second control signal (low-level signal) output by the control signal output end 54 of the reverse connection detection module 50, thereby causing the enable control module 44 to be in a no-output state.

[0123] It can be understood that in the embodiment, the control switch Q8 is in the off state by default in the normal state, so that the enable control module 44 is in the no-output state in the normal state, so that the switch driving module 42 is in the effective state and can normally respond to the driving signal RELAY_EN2 to turn on the switch device.

[0124] The intelligent connection device 100 provided in the application can rapidly detect the reverse connection state of the external load by using the combination switch circuit composed of transistors as the reverse connection detection module, so as to rapidly respond to the first control signal corresponding to the reverse connection state of the external load and timely disconnect the discharge output of the battery assembly to the external load by using the control signal output by the reverse connection detection module 50 to directly control the output of the enable control signal, so as to control the on-off state of the switch device 41. It can be seen that the intelligent connection device provided in the application can significantly improve the detection speed and effectiveness of the related protection function, so as to significantly improve the safety and reliability of the power output control system. In addition, the key device of the intelligent connection device provided in the application has low cost and simple and reliable peripheral circuit, which not only reduces the material cost of the product, but also saves the human and material cost of the product after-sales.

[0125] It can be understood that in other embodiments, the reverse connection detection module 50 can also use a detection circuit composed of a sensor device, for example, an optocoupler, to realize the reverse connection detection function of the external load.

[0126] Please refer again to Figure 1 In the embodiment, the intelligent connection device 100 further comprises a reverse connection state indication module 61 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 reverse connection state indication module 61 to control the reverse connection state indication module 61 to send an alarm signal to perform reverse connection alarm prompt.

[0127] Please refer again to Figure 3 The reverse connection state indication module 61 comprises a switch unit Q1, a display unit 611 and / or an alarm unit 612. The display unit 611 comprises at least one light-emitting diode or at least one liquid crystal display device, and the display unit 611 is electrically connected with the reverse connection detection module 50. The reverse connection detection module 50 is further configured to output the first control signal to the display unit 611 to control the display unit 611 to emit light or display information to perform reverse connection alarm prompt.

[0128] The alarm unit 612 includes at least one buzzer or loudspeaker, and is electrically connected with the reverse connection detection module 50. 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 issue an alarm sound for reverse connection alarm prompt.

[0129] In the embodiment, the reverse connection state indication module 61 includes the display unit 611 and the alarm unit 612. The display unit 611 includes one light-emitting diode (LED) 2, and the alarm unit 612 includes one loudspeaker LS1. The control terminal 1 of the switch unit Q1 is electrically connected to the control signal output terminal 54 of the reverse connection detection module 50 through a resistor R11, and is electrically connected to the second ground terminal GND through a zener diode D9. The first connection terminal 2 of the switch unit Q1 is electrically connected to the second ground terminal GND. The LED 2 and the alarm unit 612 are electrically connected in parallel between the voltage source and the second connection terminal 3 of the switch unit Q1. The anode of the LED 2 is electrically connected to the voltage source VCC, and the cathode of the LED 2 is electrically connected to the second connection terminal 3 of the switch unit Q1 through a resistor R16. The loudspeaker LS1 is electrically connected to the second connection terminal 3 of the switch unit Q1 through a resistor R10. The second connection terminal 3 of the switch unit Q1 is further electrically connected to the voltage source VCC through a capacitor C6.

[0130] In the embodiment, the switch unit Q1 is a transistor that is turned on at a high level, such as an NMOS tube or an NPN transistor.

[0131] In operation, if the external load is reversely connected to the load connection terminal 30, the control signal output terminal 54 outputs the first control signal, which is a high-level signal, as described above. The switch unit Q1 is turned on due to that the control terminal 1 thereof receives the first control signal (high-level signal) output by the control signal output terminal 54 of the reverse connection detection module 50, thereby turning on the loop in which the LED 2 and the loudspeaker LS1 are located. The LED 2 emits light, and the loudspeaker LS1 issues an alarm sound, so as to prompt that the external load is reversely connected to the load connection terminal 30.

[0132] If the load connection end 30 is empty or the external load is connected to the load connection end 30, the control signal output end 54 outputs the second control signal, which is a low-level signal, as described above. The switch unit Q1 enters the off state due to the second control signal (low-level signal) output by the control signal output end 54 of the reverse connection detection module 50, thereby cutting off the circuit in which the light-emitting diode LED2 and the horn LS1 are located, so that the light-emitting diode LED2 does not emit light and the horn LS1 does not emit an alarm sound.

[0133] The intelligent connection device 100 provided in the present application directly controls the working state of the reverse connection state indication module 61 by using the control signal output by the reverse connection detection module, so as to quickly respond to the first control signal corresponding to the reverse connection state of the external load and timely provide the user with an alarm prompt of the reverse connection state, so that the user can timely adjust the electrical connection between the intelligent connection device 100 and the external load.

[0134] Please refer again to Figure 1 In the present embodiment, the intelligent connection device 100 further comprises a load voltage detection module 83 electrically connected to the load connection end, and the load voltage detection module 83 is configured to detect the load voltage of the external load through the load connection end 30 and output a corresponding load voltage signal.

[0135] The controller 70 is also electrically connected to the load voltage detection module 83, and the controller 70 is further configured to receive the load voltage signal output by the load voltage detection module 83 when in the automatic output mode, and determine the connection state and voltage change state of the external load according to the load voltage signal. The controller 70 is further configured to output a driving signal RELAY_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 end 30 and the load voltage of the external load meets the preset condition, so that the battery assembly can be electrically connected to the external load and discharge output to the external load.

[0136] With the external load being a car battery and the battery assembly being a starting power supply battery assembly as an example, in an embodiment, the controller 70 is configured to determine whether the voltage of the car battery drops by more than a preset amplitude threshold within a preset time according to the received load voltage signal within the preset time, i.e., determine whether the voltage of the car battery drops. The controller 70 is further configured to determine that the load voltage of the car battery meets the preset condition when it is determined that the voltage of the car battery drops by more than the preset amplitude threshold within the preset time, i.e., the voltage of the car battery drops and the slope of the voltage drop reaches a preset drop slope, and output the driving signal RELAY_EN2 to turn on the switching circuit 40 to enable the starting power supply to provide power to the car battery. It can be understood that if the voltage of the car battery drops by more than the preset amplitude threshold within the preset time, i.e., the voltage of the car battery drops, it indicates that the car battery is used to start the car. At this time, the starting power supply can be used to provide power to the car battery by turning on the switching circuit 40 to start the car. It can be understood that the controller 70 only turns on the switching circuit 40 when the car battery is used to start the car. In this way, the amount of power of the starting power supply can be saved, and the car can be started.

[0137] In another embodiment, the controller 70 is configured to determine whether the voltage of the car battery is less than a preset voltage threshold according to the received load voltage signal, and when it is determined that the voltage of the car battery is less than the preset voltage threshold, determine whether the voltage of the car battery drops by more than a preset amplitude threshold within a preset time according to the received load voltage signal within the preset time, and when it is determined that the voltage of the car battery drops by more than the preset amplitude threshold within the preset time, determine that the load voltage of the car battery meets the preset condition, and output the driving signal RELAY_EN2 to turn on the switching circuit 40 to enable the starting power supply to provide power to the car battery. It can be understood that if the voltage of the car battery is less than the preset voltage threshold, it indicates that the car battery is in a power deficit state. If the voltage of the car battery drops by more than the preset amplitude threshold within the preset time, it indicates that the car battery is used to start the car. In this way, the controller 70 only turns on the switching circuit 40 when the smart connection device 100 is connected to the power deficit car battery and the car battery is used to start the car. In this way, the amount of power of the starting power supply can be saved, and the car can be started, and the car battery can be prevented from being reverse charged to the starting power supply.

[0138] In an embodiment, the smart connection device 100 can further comprise a load connection state indication module 60, which can comprise a positive connection state indication module 62 and a reverse connection state indication module 61. The controller 70 can further control the positive connection state indication module 62 to send an indication signal to provide corresponding working state indication to the user when determining that the external load is connected to the load connection end 30 in positive connection. The positive connection state indication module 62 can comprise at least one light emitting diode or at least one buzzer.

[0139] In the embodiment, the controller 70 can be a programmable control device, such as a micro-controller unit (MCU), a field-programmable gate array (FPGA), or a digital signal processor (DSP), etc. The controller 70 serves as the logic operation and control center of the smart connection device 100, and is mainly responsible for data acquisition and conversion, logic operation, data communication, and driving output execution, etc. The power supply of the controller 70 is from the stable voltage VCC output by the voltage stabilizing module 81.

[0140] In the embodiment, as shown in FIG. 2, the controller 70 adopts a micro-controller U2, which can comprise a plurality of input and output ports. The controller 70 can communicate and exchange information with other functional modules or external devices through the plurality of input and output ports, so as to realize the connection, driving, and control of the smart connection device 100. Figure 4

[0141] In the embodiment, the smart connection device 100 can further comprise a communication interface module (not shown in the figure) electrically connected with the controller 70. The controller 70 can be connected with the external device (external power supply device, external load) through the communication interface module, so as to acquire the current battery voltage, maximum current output capability, battery temperature, working state, software version information, etc. of the battery assembly of the external power supply device, and determine whether the electrical parameters of the battery assembly of the external power supply device meet the condition of discharging output to the external load, so as to determine whether to output the driving signal RELAY_EN2 to turn on the switching circuit 40. It can be understood that the controller 70 can also send its software version information, normal and abnormal working states of the smart connection device 100, voltage and output current signal of the external load, etc. to the external power supply device for adaptation and related protection. That is, the controller 70 of the smart connection device 100 can exchange information with the external device through the communication interface module, and perform corresponding control.​

[0142] It can be understood that when the communication timeout interrupt or data interaction information provided by the communication interface module is abnormal, 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 drive signal RELAY_EN2, thereby disconnecting the switch circuit 40 to cut off the current output loop 11, and outputs a corresponding state indication to ensure the safety of the system and external devices.

[0143] Optionally, the intelligent connection device 100 further comprises a temperature detection module 84 electrically connected to the controller 70, which is configured to detect the working temperature of the switch device 41 and / or the built-in battery assembly, etc., and feed back the detected temperature value to the controller 70. The controller 70 further analyzes whether the working temperature of the switch device 41 and / or the built-in battery assembly, etc. exceeds the preset threshold according to the received temperature value, and suspends the output of the drive signal RELAY_EN2 when it is analyzed that the working temperature of the switch device 41 and / or the built-in battery assembly, etc. exceeds the preset threshold, thereby disconnecting the switch circuit 40 to cut off the current output loop 11, ensuring the safety of system operation.

[0144] Optionally, the intelligent connection device 100 further comprises a current detection module 85 electrically connected between the power connection end 20 and the load connection end 30, and the current detection module 85 is also electrically connected to the controller 70. The current detection module 85 is configured to collect the current in the current output loop 11, i.e. the discharge current of the battery assembly to the external load, in real time during the conduction 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 negative connection end BAT- and the load negative connection end CAR-. In other embodiments, the current detection module 85 can also be electrically connected between the power positive connection end BAT+ and the load positive connection end CAR+. The controller 70 further analyzes whether the discharge output of the battery assembly is normal according to the received current sampling signal, and suspends the output of the drive signal RELAY_EN2 when it is analyzed that the discharge output of the battery assembly is abnormal, thereby disconnecting the switch circuit 40 to cut off the current output loop 11, ensuring the safety of system operation.

[0145] Optionally, the intelligent connection device 100 further comprises an overcurrent and short-circuit protection module 86, which is electrically connected with the current detection module 85 and the controller 70 respectively. The overcurrent and short-circuit protection module 86 is configured to monitor whether the value of the current sampling signal output by the current detection module 85 exceeds a preset threshold value, and output an interrupt trigger signal to the controller 70 when it is monitored that the value of the current sampling signal exceeds the preset threshold value, so that the controller 70 immediately suspends the output of the drive signal, thereby achieving rapid disconnection of the switching circuit 40 to cut off the current output loop 11, ensuring the safety of system operation. In other embodiments, the output end of the overcurrent and short-circuit protection module 86 can also be directly connected with the switching circuit 40, so as to directly disconnect the switching circuit 40 when it is monitored that the value of the current sampling signal exceeds the preset threshold value.

[0146] Those skilled in the art can understand that the above-mentioned schematic Figure 1 The intelligent connection device 100 described above is only an example of the application for realizing the function of detecting the access state of an external load and discharging output of the battery assembly to the external load, and does not constitute a limitation on the intelligent connection device 100. The intelligent connection device 100 can include more or fewer components than the schematic, or combine certain components, or different components.

[0147] Please refer to Figures 5-6 The application also provides a starting power supply 200 using the above-mentioned intelligent connection device 100. As shown in Figure 5 The starting power supply 200 comprises a housing 201, a battery assembly 202, and the above-mentioned intelligent connection device 100. At least part of the structure of the battery assembly 202 and the intelligent connection device 100, such as the power supply connection end 20, the load connection end 30, the switching circuit 40, the drive power supply module 43, the reverse connection detection module 50, the controller 70, the voltage stabilizing power supply module 81, the load voltage detection module 83, the temperature detection module 84, the current detection module 85, and the overcurrent and short-circuit protection module 86, can be arranged in the housing 201. At least part of the structure of the intelligent connection device 100, such as the load connection state indication module 60 and the key control module 82, can be arranged on the housing 201.

[0148] In the embodiment, the starting power supply 200 further comprises a charging interface 204 arranged on the shell 201, the charging interface 204 is used to be connected with an external power supply, such as a mains electricity, to receive power supply of the external power supply to charge the battery assembly 202. Wherein, the type of the charging interface 204 includes but is not limited to a DC interface, a USB interface, a Micro USB port, a Mini USB interface, a Type-A interface, a Type-C interface.

[0149] The power connection end 20 of the smart connection device 100 is electrically connected with the battery assembly 202 of the starting power supply 200.

[0150] In the embodiment, as shown in Figures 5-6 The starting power supply 200 further comprises a connection port 203 arranged on the shell 201, the connection port 203 is electrically connected with the load connection end 30 of the smart connection device 100, and the connection port 203 is used to be electrically connected with an external load by connecting an external connection piece 400, that is, one end of the connection piece 400 is detachably connected with the connection port 203, and the other end is detachably connected with the external load. Wherein, the appearance structure of the starting power supply 200 can adopt the structure of the starting power supply 200 as shown in Figure 6 , or the structure of the starting power supply 200' as shown in Figure 7 , or other structures, and the appearance structure of the starting power supply 200 is not specifically limited in the application.

[0151] In the embodiment, the connection piece 400 is a wire clamp, which comprises a first wire clamp 401, a second wire clamp 402, a cable 403, and a connection terminal 404, the cable 403 is used to connect the first wire clamp 401 and the second wire clamp 402 to the connection terminal 404 respectively. The connection terminal 404 is detachably electrically connected with the connection port 203. Wherein, the first wire clamp 401 is used to clamp the positive electrode of the external load, the second wire clamp 402 is used to clamp the negative electrode of the external load, and the positive electrode and the negative electrode of the external load are electrically connected one by one through the first wire clamp 401 and the second wire clamp 402, the connection terminal 404, the connection port 203, and the load positive connection end CAR+ and the load negative connection end CAR- of the load connection end 30.

[0152] Optionally, in another embodiment, as shown in Figures 7-8As shown, the starting power supply 200' further comprises a connecting piece 205, one end of which is electrically connected with the load connecting end 30 of the intelligent connecting device 100, and the other end is used for electrical connection with the external load. That is, one end of the connecting piece 205 is built-in in the starting power supply 200'. In the other embodiment, the connecting piece 205 is a wire clamp. The connecting piece 205 is similar in structure to the connecting piece 400 except that it does not contain the connecting terminal 404, and details are not repeated here.

[0153] The starting power supply 200 and 200' provided by the present application can directly control the output of the enable control signal by using the intelligent connecting device 100 described above, control the effectiveness of the switch driving module, and control the on-off state of the switch device, so as to quickly respond to the first control signal corresponding to the reverse connection state of the external load, and timely disconnect the discharge output of the battery assembly to the external load. The purpose is to significantly improve the detection speed and effectiveness of the related protection function, and to significantly improve the safety and reliability of the power supply output control system. In addition, the key device of the intelligent connecting device provided by the present application has low cost and simple and reliable peripheral circuit. Therefore, not only can the material cost of the starting power supply 200 or 200' be reduced, but also the human and material costs of product after-sales can be saved.

[0154] Please refer to Figures 9-10 The present application also provides a battery clamp 300 using the intelligent connecting device 100 described above. The battery clamp 300 comprises a housing 301, a power input interface 302, a connecting piece 303, and the intelligent connecting device 100 described above. The power input interface 302 is provided on the housing 301, and is used for electrical connection with an external power supply device 500, such as an emergency starting power supply, wherein the external power supply device 500 comprises a battery assembly (not shown in the figure). In the present embodiment, the power input interface 302 is a connecting terminal, and the external power supply device 500 further comprises a connecting port 501 adapted to the power input interface 302 of the battery clamp 300, and the battery clamp 300 realizes electrical connection with the external power supply device 500 through detachable electrical connection between the power input interface 302 and the connecting port 501.

[0155] At least part of the structure of the intelligent connection device 100, such as the power connection end 20, the load connection end 30, the switching circuit 40, the driving power module 43, the reverse connection detection module 50, the controller 70, the voltage stabilizing power module 81, the load voltage detection module 83, the temperature detection module 84, the current detection module 85, the overcurrent and short-circuit protection module 86, etc., can be arranged in the shell 301, and at least part of the structure of the intelligent connection device 100, such as the load connection state indication module 60, the key control module 82, etc., can be arranged on the shell 301.

[0156] The power connection end 20 of the intelligent connection device 100 is electrically connected with the power input interface 302 and electrically connected with the battery assembly of the external power supply equipment 500 through the power input interface 302.

[0157] One end of the connecting piece 303 is electrically connected with the load connection end 30 of the intelligent connection device 100, and the other end is used for electrically connecting with an external load. In the embodiment, the connecting piece 303 is a wire clamp. The connecting piece 303 is similar to the connecting piece 400 in structure except that the connecting piece 303 does not include the connecting terminal 404, and details are not described herein.

[0158] The appearance structure of the battery clamp 300 can adopt the structure of the battery clamp 300 shown in the drawings or other structures, and the appearance structure of the battery clamp 300 is not specifically limited in the application. Figure 10

[0159] The battery clamp 300 provided in the application can directly control the output of the enable control signal by using the intelligent connection device 100 described above, control the effectiveness of the switching driving module, control the on-off state of the switching device, quickly respond to the first control signal corresponding to the reverse connection state of the external load, and timely disconnect the discharge output of the battery assembly to the external load. The purpose is to significantly improve the detection speed and effectiveness of the related protection function, and to significantly improve the safety and reliability of the power output control system. In addition, the key device of the intelligent connection device 100 provided in the application has low cost and simple and reliable peripheral circuit. Therefore, not only the material cost of the battery clamp 300 can be reduced, but also the human and material costs of product after-sales can be saved.

[0160] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application and not to limit the application. Although the application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solutions of the application can be modified or replaced without departing from the spirit and scope of the application.​

Claims

1. A smart connection device, comprising: A power connection terminal is used for electrical connection with the battery assembly, and the power connection terminal includes a positive power connection terminal and a negative power connection terminal. Load connection terminal, used for electrical connection to an external load; A switching circuit includes a switching device and a switch driving module electrically connected to the switching device. The switching circuit is electrically connected between the power supply connection terminal and the load connection terminal. When the switch driving module is in an active state, it can respond to a drive signal to turn on the switching device. as well as A detection module, electrically connected to the load connection terminal, is used to detect the connection status of the external load through the load connection terminal. The detection module outputs a control signal based on the connection status to switch the state of the switch drive module to a failure state. When the switch drive module is in a failure state, it cannot conduct the switching device, thus keeping the switching circuit in an open state, thereby disconnecting the electrical connection between the battery assembly and the external load, and preventing the battery assembly from discharging to the external load; or The control signal is used to switch the state of the switch drive module to an active state, thereby turning on the switch device; The detection module includes a reverse connection detection module, which outputs a first control signal when it detects that the external load is reverse connected to the load connection terminal. The load connection terminal includes a positive load connection terminal and a negative load connection terminal, wherein the negative load connection terminal is electrically connected to the first ground terminal; The reverse connection detection module includes: The first detection terminal is electrically connected to the positive connection terminal of the load. The second detection terminal is electrically connected to the negative connection terminal of the load. The drive voltage input terminal is electrically connected to the voltage source, and the reverse connection detection module receives the drive voltage provided by the voltage source through the drive voltage input terminal; Control signal output terminal; and multiple transistors; and A first transistor and a second transistor, wherein the first transistor is electrically connected between the first detection terminal and the control terminal of the second transistor, and the control terminal of the first transistor is also electrically connected to the second detection terminal; the second transistor is electrically connected between the control signal output terminal and the second ground terminal.

2. The intelligent connection device as described in claim 1, characterized in that, The intelligent connection device also includes an enable control module, which is electrically connected to the switch drive module; The enable control module is electrically connected to the detection module. The detection module outputs the first control signal to the enable control module to control the enable control module to output an enable control signal, which switches the state of the switch drive module to a disabled state.

3. The intelligent connection device as described in claim 2, characterized in that, The intelligent connection device further includes a reverse connection status indication module electrically connected to the reverse connection detection module. The reverse connection detection module is also used to output the first control signal to the reverse connection status indication module to control the reverse connection status indication module to issue an alarm signal for reverse connection alarm prompt.

4. The intelligent connection device as described in claim 2, characterized in that, The reverse connection detection module is also used to output a second control signal when it detects that the load connection terminal is unloaded or the external load is connected to the load connection terminal, and output the second control signal to the enable control module to prevent the enable control module from outputting the enable control signal, thereby switching the state of the switch drive module to the active state.

5. The intelligent connection device as described in claim 4, characterized in that, The switch driving module includes: A switching unit is electrically connected to the power supply circuit of the switching device. The switching unit is used to control the on / off state of the power supply circuit. The switching device receives power and enters the on state when the power supply circuit is in the on state. A drive signal input terminal is used to receive the drive signal, wherein the drive signal is used to turn on the switching unit; and An enable control signal input terminal is used to receive the enable control signal to forcibly disconnect the switching unit; When the switching unit receives both the drive signal and the enable control signal simultaneously, it prioritizes responding to the enable control signal.

6. The intelligent connection device as described in claim 5, characterized in that, The enable control module includes an enable control signal output terminal and a control switch. The enable control signal output terminal is electrically connected to the enable control signal input terminal of the switch drive module, and the control switch is electrically connected between the enable control signal output terminal and the ground terminal.

7. The intelligent connection device as described in claim 6, characterized in that, The reverse connection detection module is electrically connected to the control terminal of the control switch and outputs the first control signal or the second control signal to the control terminal of the control switch to switch the on / off state of the control switch, thereby controlling the output state of the enable control module and thus controlling the effectiveness of the switch drive module. The control switch enters the conducting state when it receives the first control signal output by the reverse connection detection module, thereby enabling the control module to output a low-level signal, wherein the enabling control signal is a low-level signal; When the control switch receives the second control signal output by the reverse connection detection module, it enters the off state, thereby putting the enable control module in a no-output state.

8. The intelligent connection device as described in claim 1, characterized in that, The reverse connection detection module includes a combination switch circuit composed of transistors.

9. The intelligent connection device as described in claim 1, characterized in that, The control signal output terminal is electrically connected to the drive voltage input terminal through a resistor.

10. The intelligent connection device as described in claim 9, characterized in that, The control terminal of the second transistor is also electrically connected to the drive voltage input terminal via a resistor.

11. The intelligent connection device as described in claim 10, characterized in that, The intelligent connection device also includes an enable control module, which is electrically connected to the switch drive module; The enabling control module is electrically connected to the detection module. The detection module outputs the first control signal to the enabling control module to control the enabling control module to output the enabling control signal. The enabling control signal switches the state of the switch drive module to the failure state. The enable control module includes an enable control signal output terminal and a control switch. The enable control signal output terminal is electrically connected to the enable control signal input terminal of the switch drive module, and the control switch is electrically connected between the enable control signal output terminal and the ground terminal. The control terminal of the control switch is electrically connected to the control signal output terminal, and the first transistor, the second transistor, and the control switch are all transistors that are turned on at a high level. When the external load is reversed to the load connection terminal, the first transistor is turned on, the second transistor is turned off, the control signal output terminal is electrically connected to the drive voltage input terminal and is in a high-level state, and outputs the first control signal, thereby causing the control switch to enter the on state, wherein the first control signal is a high-level signal; When the load connection terminal is unloaded or the external load is connected to the load connection terminal, the first transistor is disconnected and the second transistor is turned on. The control signal output terminal is electrically connected to the second ground terminal through the turned-on second transistor and is in a low-level state, and outputs a second control signal, thereby causing the control switch to enter the off state, wherein the second control signal is a low-level signal.

12. The intelligent connection device as described in claim 1, characterized in that, The detection module includes a detection circuit composed of sensor devices, wherein the sensor devices include optocouplers.

13. The intelligent connection device according to any one of claims 1-12, characterized in that, The smart connection device also includes: A load voltage detection module, electrically connected to the load connection terminal, is used to detect the load voltage of the external load through the load connection terminal and output a corresponding load voltage signal; and The controller is electrically connected to the load voltage detection module and the switch drive module respectively. The controller is also used to receive the load voltage signal output by the load voltage detection module and determine the connection status and voltage change status of the external load based on the load voltage signal. The controller is further configured to output the drive signal to the switch drive module when it is determined that the external load is positively connected to the load connection terminal and the load voltage of the external load meets the preset conditions, so as to turn on the switch device through the switch drive circuit in the effective state, thereby enabling the battery assembly to be electrically connected to the external load and to discharge the external load.

14. The intelligent connection device as described in claim 13, characterized in that, The intelligent connection device further includes a voltage regulator module electrically connected to the positive power connection terminal. The voltage regulator module is used to receive the input voltage of the battery assembly through the positive power connection terminal and to perform voltage conversion on the input voltage to output a stable voltage. The voltage source is provided by the stable voltage output by the regulated power supply module or by the battery assembly electrically connected to the positive terminal of the power supply.

15. The intelligent connection device as described in claim 14, characterized in that, The intelligent connection device further includes a drive power module electrically connected to the switching circuit, the drive power module being used to provide drive power to the switching circuit; The drive power module is electrically connected to the power connection terminal, and the drive power of the switching circuit is provided by the battery assembly electrically connected to the power connection terminal; or, the drive power module is electrically connected to the voltage regulator module, and the drive power of the switching circuit is provided by the stable voltage output by the voltage regulator module.

16. The intelligent connection device as described in claim 3, characterized in that, The reverse connection status indication module includes: The display unit is electrically connected to the reverse connection detection module. The reverse connection detection module is also used to output the first control signal to the display unit to control the display unit to emit light or display information for reverse connection alarm prompts; and / or An alarm unit is electrically connected to the reverse connection detection module. The reverse connection detection module is also used to output the first control signal to the alarm unit to control the alarm unit to emit an alarm sound to provide a reverse connection alarm prompt.

17. A starting power supply, comprising a housing and a battery assembly; Its features are, The power supply further includes a smart connection device as described in any one of claims 1-16, wherein at least a portion of the battery assembly and the smart connection device are disposed within the housing, and the power connection terminal of the smart connection device is electrically connected to the battery assembly of the power supply.

18. The starting power supply as described in claim 17, characterized in that, The power supply also includes a connection port on the housing, which is electrically connected to the load connection terminal of the intelligent connection device. The connection port is used to electrically connect to an external load via an external connector; or The power supply also includes a connector, one end of which is electrically connected to the load connection terminal of the smart connection device, and the other end is used to electrically connect to the external load.

19. A battery clamp, comprising: case; as well as A power input interface is provided on the housing, and the power input interface is used for electrical connection with an external power supply device, wherein the external power supply device includes a battery assembly; The battery clamp is characterized in that it further includes: The smart connection device as described in any one of claims 1-11, wherein at least a portion of the smart connection device is disposed within the housing, the power connection terminal of the smart connection device is electrically connected to the power input interface, and is electrically connected to the battery assembly of the external power supply device through the power input interface; and A connector, one end of which is electrically connected to the load connection terminal of the intelligent connection device, and the other end of which is used for electrical connection to an external load.

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