CN220291704U - Circuit structure, power supply device and cable - Google Patents

Abstract

The utility model provides a circuit structure, a power supply device and a cable, wherein the circuit structure is used for controlling the on-off of an energy storage group and an output port, the output port is used for being connected with a target power supply system, the target power supply system comprises at least one of a starter and an automobile battery, and the circuit structure comprises: the switch module is used for controlling the on-off of the energy storage group and the output port; the detection circuit is used for detecting the voltages at two ends of the switch module; the processing circuit is used for processing the voltages at two ends of the switch module to obtain the load current output by the energy storage group to the target power supply system. The circuit structure of the utility model obtains the load current output by the energy storage group to the target power supply system by detecting the voltage at the two ends of the switch module, thus, no additional current sampling resistor is needed, the structure is simple, and the material cost is reduced.

Description

Circuit structure, power supply device and cable

Technical Field

The present utility model relates to the field of current detection technology, and more particularly, to a circuit structure, a power supply device, and a cable.

Background

In the related art, current detection is performed by providing a current sampling resistor. So designed, the structure is complex, and the material cost is increased.

Disclosure of Invention

Embodiments of the present utility model relate to a circuit structure, a power supply device, and a cable.

The circuit structure of the embodiment of the utility model is used for controlling the on-off of the energy storage group and the output port, the output port is used for being connected with a target power supply system, the target power supply system comprises at least one of a starter and an automobile battery, the circuit structure comprises a switch module, a detection circuit and a processing circuit, and the switch module is used for controlling the on-off of the energy storage group and the output port; the detection circuit is used for detecting voltages at two ends of the switch module; the processing circuit is used for processing the voltages at two ends of the switch module to obtain the load current output by the energy storage group to the target power supply system.

In some embodiments, the processing circuit is further configured to output a control signal according to the load current, so as to control on-off of the switch module.

In some embodiments, the processing circuit is configured to output a control signal according to the load current and a preset current, and the switch module is turned off when the control signal is a first control signal; and when the control signal is a second control signal, the switch module is closed.

In some embodiments, the preset current includes a first preset current, and the processing circuit is configured to output the first control signal when the load current is greater than the first preset current; and/or, the processing circuit is used for outputting the second control signal under the condition that the load current is smaller than the first preset current.

In some embodiments, the preset current further includes a second preset current, and the processing circuit is configured to output the second control signal when the load current is greater than the second preset current, where the second preset current is less than the first preset current.

In some embodiments, the switch module includes a relay or a MOS transistor, the relay switch module is connected to the positive terminal line of the energy storage group, and the load current is a current on the positive terminal line of the energy storage group.

In some embodiments, the detection circuit includes a first detection circuit for detecting a voltage at the first end of the switch module and a second detection circuit; the second detection circuit is used for detecting the voltage of the second end of the switch module.

In some embodiments, the first detection circuit includes a first voltage dividing resistor and a second voltage dividing resistor, the voltage of the first voltage dividing resistor or the voltage of the second voltage dividing resistor being used to characterize the voltage of the first end of the switch module; the second detection circuit comprises a third voltage dividing resistor and a fourth voltage dividing resistor, and the voltage of the third voltage dividing resistor or the voltage of the fourth voltage dividing resistor is used for representing the voltage of the second end of the switch module.

In certain embodiments, the circuit structure further comprises: the driving circuit is used for connecting the processing circuit with the switch module, the processing circuit is also used for outputting a control signal according to the load current, and the driving circuit is used for controlling the on-off of the switch module according to the control signal.

In some embodiments, the circuit structure further includes a power supply circuit, the power supply circuit is connected to the energy storage group, and the power supply circuit is configured to adjust an output voltage of the energy storage group to a preset voltage to provide the preset voltage to the processing circuit.

In some embodiments, the circuit structure further includes a prompt module, where the prompt module is connected to the processing circuit, and the prompt module is configured to issue a prompt when the load current is greater than a first preset current.

In some embodiments, the circuit structure further includes at least one of an energy storage group voltage detection unit, a reverse connection detection unit, and a target power supply system voltage detection unit, where the energy storage group voltage detection unit is configured to open the switch module if a voltage of the energy storage group does not conform to a first preset range; the reverse connection detection unit is used for disconnecting the switch module under the condition that the energy storage group is reversely connected with the target power supply system; the target power supply system voltage detection unit is used for switching off the switch module under the condition that the voltage of the target power supply system does not accord with a second preset range.

The power supply device of an embodiment of the present utility model includes a housing and the circuit structure of any of the above embodiments, the circuit structure being disposed within the housing.

The cable of the embodiment of the utility model comprises a shell and the circuit structure of any one of the embodiments, wherein the circuit structure is arranged in the shell, the output port comprises a first clamp and a second clamp, and the first clamp and the second clamp are used for connecting the target power supply system; the cable also comprises a pluggable interface, and the pluggable interface is used for pluggable connection of the energy storage group.

According to the circuit structure, the power supply equipment and the cable, the load current output by the energy storage group to the target power supply system is obtained by detecting the voltages at the two ends of the switch module, so that no additional current sampling resistor is needed, the structure is simple, and the material cost is reduced.

Additional aspects and advantages of embodiments of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic diagram of the connection of energy storage banks, circuit structures and outlets according to certain embodiments of the present utility model;

FIG. 2 is a schematic circuit diagram of a processing circuit according to some embodiments of the utility model;

FIG. 3 is a circuit schematic of a circuit configuration of some embodiments of the utility model;

FIG. 4 is a circuit schematic of a power supply circuit according to some embodiments of the utility model;

FIG. 5 is a schematic circuit diagram of a prompt module according to some embodiments of the utility model;

fig. 6 is a schematic diagram of a power supply device according to some embodiments of the utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

In the related art, current detection is performed by providing a current sampling resistor. So designed, the structure is complex, and the material cost is increased.

Referring to fig. 1, a circuit structure 100 of the embodiment of the present utility model is used for controlling on/off of an energy storage group 200 and an output port 300, the output port 300 is used for connecting a target power supply system, the target power supply system comprises at least one of a starter and an automobile battery, the circuit structure 100 comprises a switch module 10, a detection circuit 20 and a processing circuit 30, and the switch module 10 is used for controlling on/off of the energy storage group 200 and the output port 300; the detection circuit 20 is used for detecting voltages at two ends of the switch module 10; the processing circuit 30 is configured to process the voltages across the switch module 10 to obtain a load current output by the energy storage group 200 to the target power supply system.

Specifically, the energy storage pack 200 includes at least one of a battery pack and a capacitor pack, and the battery pack may be a lithium battery pack. Referring to fig. 2, the processing circuit 30 includes an MCU. The switch module 10 is connected to the energy storage group 200 and the output port 300, and when the load current of the energy storage group 200 changes, the voltage of the switch module 10 changes, so that the load current of the energy storage group 200 can be obtained according to the voltage across the switch module 10. When the switch module 10 is closed, the detection circuit 20 detects voltages at two ends of the switch module 10 and inputs the voltages into the processing circuit 30, and the processing circuit 30 obtains a load current output by the energy storage group 200 to the target power supply system according to the voltages at two ends of the switch module 10.

In this way, the load current output by the energy storage group 200 to the target power supply system is obtained by detecting the voltages at the two ends of the switch module 10, so that the additional current sampling resistor is not required, the structure is simple, and the material cost is reduced.

In some embodiments, the processing circuit 30 is further configured to output a control signal according to the load current to control the on-off of the switch module 10.

Referring to fig. 3, specifically, when the switch module 10 is turned on, the detection circuit 20 detects voltages at two ends of the switch module 10 and inputs the voltages to the processing circuit 30, and the processing circuit 30 obtains a load current output by the energy storage group 200 to the target power supply system according to the voltages at two ends of the switch module 10 and outputs a control signal RELAY_EN2 according to the load current to control on/off of the switch module 10.

In this way, by detecting the voltages at the two ends of the switch module 10, the load current output by the energy storage group 200 to the target power supply system can be obtained, and the processing circuit 30 outputs a control signal according to the load current, so as to control the on-off of the switch module 10, and control the on-off of the energy storage group 200 and the output port 300.

In some embodiments, the processing circuit 30 is configured to output a control signal according to the load current and the preset current, and the switch module 10 is turned off when the control signal is the first control signal; in case the control signal is a second control signal, the switch module 10 is closed.

Specifically, the circuit structure 100 includes a programming hole, the programming hole is used for programming the MCU, and the preset current can be preset in the program. In the case that the processing circuit 30 outputs the first control signal, the switching module 10 is turned off to stop the power supply of the energy storage group 200 to the target power supply system; in the case where the processing circuit 30 outputs the second control signal, the control switch module 10 is closed, so that the energy storage group 200 can supply power to the target power supply system.

In this way, the processing circuit 30 outputs a control signal according to the load current and the preset current, and controls the on-off of the switch module 10 to control the on-off of the energy storage group 200 and the output port 300, so that the energy storage group 200 stops supplying power to the target power supply system under the condition that the load current does not meet the expected requirement.

In some embodiments, the preset current includes a first preset current, and the processing circuit 30 is configured to output the first control signal when the load current is greater than the first preset current; and/or, in case the load current is smaller than the first preset current, the processing circuit 30 is configured to output the second control signal.

Specifically, in the case that the load current is greater than the first preset current, the processing circuit 30 outputs a first control signal to control the switch module 10 to be turned off so as to stop the power supply of the energy storage group 200 to the target power supply system; in the case that the load current is smaller than the first preset current, the processing circuit 30 outputs a second control signal to control the switch module 10 to be closed, so that the energy storage group 200 can supply power to the target power supply system.

In one embodiment, the detection circuit 20 detects voltages at two ends of the switch module 10 and inputs the voltages into the MCU, the MCU processes the voltages at two ends of the switch module 10 to obtain a load current, and in the case that the load current is greater than a first preset current, the MCU outputs a first control signal to control the switch module 10 to be disconnected, so that the energy storage group 200 is disconnected from the output port 300, and power supply of the energy storage group 200 to the target power supply system is stopped; in the case that the load current is smaller than the first preset current, the MCU outputs a second control signal so that the switch module 10 can be closed to enable the energy storage group 200 and the output port 300 to communicate.

In this way, when the load current is greater than the first preset current, the processing circuit 30 outputs the first control signal to control the switch module 10 to be turned off, and the energy storage group 200 stops supplying power to the target power supply system, so as to realize overcurrent protection; when the load current is smaller than the first preset current, a second control signal is output, and the switch module 10 is controlled to be closed, so that the energy storage group 200 can be communicated with the output port 300, and the energy storage group 200 can supply power to the target power supply system.

In some embodiments, the preset current further includes a second preset current, and the processing circuit is configured to output a second control signal when the load current is greater than the second preset current, where the second preset current is less than the first preset current.

Specifically, in the case where the load current is greater than the second preset current, the processing circuit 30 outputs the second control signal, and the control switch module 10 can be closed, so that the energy storage group 200 can supply power to the target power supply system. In one embodiment, the target power supply system is an automobile starter, when the automobile is ignited and started, the current at two ends of the switch module 10 is greater than the second preset current and less than the first preset current, and the MCU outputs a second control signal to the switch module 10, so that the switch module 10 can be continuously closed, and the power supply of the energy storage group 200 to the automobile is maintained, so that the automobile can be started.

In this way, by setting the second preset current, the energy storage group 200 can supply power to the target power supply system.

In some embodiments, the switch module 10 includes a relay or a MOS transistor, and the switch module 10 is connected to the positive terminal line of the energy storage group 200, and the load current is the current of the positive terminal line of the energy storage group 200.

Specifically, in this embodiment, the switch module includes a relay, referring to fig. 3, the relay K1 is connected to the positive terminal of the energy storage group 200, and when the load current of the energy storage group 200 changes, the voltage of the relay also changes, that is, the load current of the energy storage group 200 can be obtained according to the voltage of the relay. Wherein bat+ and BAT-in fig. 3 may refer to the positive and negative poles of the energy storage bank 200, and car+ and CAR-may refer to the positive and negative poles of the output port 300. When the load current is greater than the first preset current, that is, when the current on the positive terminal line of the energy storage group 200 is greater than the first preset current, the processing circuit 30 outputs a first control signal to control the relay K1 to be turned off so as to stop the energy storage group 200 from supplying power to the target power supply system; when the load current is greater than the second preset current and less than the first preset current, that is, when the current on the positive terminal line of the energy storage group 200 is greater than the second preset current and less than the first preset current, the processing circuit 30 outputs a second control signal to control the relay K1 to be closed, so that the energy storage group 200 can supply power to the target power supply system.

In one embodiment, when the load current is greater than the first preset current, the detection circuit 20 detects the voltage at two ends of the relay K1 and inputs the voltage to the MCU, and then the MCU processes the voltage at two ends of the relay K1 to obtain a load current greater than the first preset current, and the MCU outputs a first control signal to control the relay K1 to be turned off so as to control the energy storage assembly 200 to be turned off from the output port 300, and stops the energy storage assembly 200 from supplying power to the target power supply system.

In another embodiment, the load current is greater than the second preset current and less than the first preset current, the detection circuit 20 detects the voltage at two ends of the relay K1 and inputs the voltage to the MCU, and then the MCU processes the voltage at two ends of the relay K1 to obtain a load current greater than the second preset current and less than the first preset current, and the MCU outputs a second control signal to control the relay K1 to be closed, so as to control the energy storage group 200 and the output port 300 to be capable of communicating, so that the energy storage group 200 can supply power to the target power supply system.

In this way, the processing circuit 30 can obtain the load current according to the voltage at two ends of the relay, and output a control signal according to the load current and the first preset current processing circuit 30 to control the on-off of the relay, thereby controlling the on-off of the energy storage group 200 and the output port 300.

Referring to fig. 3, in some embodiments, the detection circuit 20 includes a first detection circuit 21 and a second detection circuit 23, where the first detection circuit 21 is configured to detect a voltage at a first end of the switch module 10; the second detection circuit 23 is configured to detect a voltage at the second terminal of the switch module 10.

Specifically, one end of the first detection circuit 21 is connected to one end of the switch module 10, and the other end of the first detection circuit 21 is connected to the processing circuit 30; one end of the second detection circuit 23 is connected to the other end of the switch module 10, and the other end of the second detection circuit 23 is connected to the processing circuit 30. The first detection circuit 21 and the second detection circuit 23 input the detected voltage of the first end and the voltage of the second end of the switch module 10 into the processing circuit 30, the processing circuit 30 processes the voltages of the two ends of the switch module 10 to obtain a load current output by the energy storage group 200 to the target power supply system, and outputs a control signal according to the load current of the energy storage group 200 and a first preset current, and the processing circuit 30 outputs the first control signal to control the switch module 10 to be disconnected to stop the power supply of the energy storage group 200 to the target power supply system under the condition that the load current is larger than the first preset current; in the case that the load current is greater than the second preset current and less than the first preset current, the processing circuit 30 outputs a second control signal to control the switch module 10 to be closed, so that the energy storage group 200 can supply power to the target power supply system.

In this way, the voltage at two ends of the switch module 10 can be obtained through the first detection circuit 21 and the second detection circuit 23, so as to provide the voltage to the processing circuit 30, the processing circuit 30 can obtain the load current of the energy storage group 200 after processing, and output a control signal according to the load current and the first preset current, so as to control the on-off of the switch module 10, and control the on-off of the energy storage group 200 and the output port 300.

In some embodiments, the first detection circuit 21 includes a first voltage dividing resistor and a second voltage dividing resistor, the voltage of the first voltage dividing resistor or the voltage of the second voltage dividing resistor being used to characterize the voltage of the first end of the switch module 10; the second detection circuit 23 includes a third voltage dividing resistor and a fourth voltage dividing resistor, and the voltage of the third voltage dividing resistor or the voltage of the fourth voltage dividing resistor is used to characterize the voltage of the second terminal of the switch module 10.

Specifically, referring to fig. 3, one end of the first resistor R1 is grounded, the other end of the first resistor R1 is connected to one end of the second resistor R3 and the processing circuit 30, and the other end of the second resistor R3 is connected to the positive terminal line of the energy storage group 200 and one end of the relay K1; one end of the third resistor R2 is grounded, the other end of the third resistor R2 is connected with one end of the fourth resistor R4 and the processing circuit 30, and the other end of the fourth resistor R4 is connected with the positive end line of the energy storage group 200 and the other end of the relay K1.

In one embodiment, the voltage of R1 characterizes the voltage at the first terminal of the switch module 10, the voltage of R1 is input to the MCU through BAT_SN, the voltage of R2 characterizes the voltage at the second terminal of the switch module 10, and the voltage of R2 is input to the MCU through OUT_SN. After the voltage of R1 and the voltage of R2 are input into the processing circuit 30, the load current of the energy storage group 200 can be obtained through processing by the processing circuit 30. In the case that the load current is greater than the first preset current, the processing circuit 30 outputs a first control signal to control the relay K1 to be turned off so as to stop the power supply of the energy storage group 200 to the target power supply system; in the case that the load current is greater than the second preset current and less than the first preset current, the processing circuit 30 outputs a second control signal to control the relay K1 to be closed, so that the energy storage group 200 can supply power to the target power supply system.

In this way, the detection circuit 20 can obtain the voltage of the first end of the switch module 10 through the voltage of the first voltage dividing resistor or the voltage of the second voltage dividing resistor; the voltage across the third voltage dividing resistor or the voltage across the fourth voltage dividing resistor may obtain the voltage across the second end of the switch module 10, i.e. the detection circuit 20 may obtain the voltage across the switch module 10. The detection circuit 20 provides the voltage at two ends of the switch module 10 to the processing circuit 30, the processing circuit 30 can obtain the load current of the energy storage group 200 after processing, and the control signal is output according to the load current and the first preset current to control the on-off of the switch module 10 so as to control the on-off of the energy storage group 200 and the output port 300.

In some embodiments, the circuit structure 100 further comprises: the driving circuit 40, the driving circuit 40 is used for connecting the processing circuit 30 and the switch module 10, the processing circuit 30 is also used for outputting a control signal according to the load current, and the driving circuit 40 is used for controlling the on-off of the switch module 10 according to the control signal.

Specifically, referring to fig. 3, the driving circuit 40 includes a MOS transistor Q2. The first control signal includes a low level and the second control signal includes a high level. When the load current is greater than the first preset current, the processing circuit 30 outputs a low level, that is, the gate of the MOS transistor Q2 inputs a low level, and the MOS transistor Q2 is turned off to control the switch module 10 to be turned off, so that the power supply of the energy storage group 200 to the target power supply system is stopped; under the condition that the load current is larger than the second preset current and smaller than the first preset current, the processing circuit 30 outputs a high level, the grid electrode of the MOS tube Q2 inputs the high level, the source electrode and the drain electrode of the MOS tube Q2 are conducted, the driving switch module 10 is closed, and the energy storage group 200 can supply power to the target power supply system.

In one embodiment, the processing circuit 30 outputs a RELAY_EN2 signal to the driving circuit 40, and if the load current of the energy storage group 200 is greater than the first preset current, the RELAY_EN2 signal output by the MCU is at a low level, and controls the MOS transistor Q2 in the driving circuit 40 to be turned off, so as to control the RELAY K1 to be turned off, so that the energy storage group 200 is turned off from the output port 300, and the power supply of the energy storage group 200 to the target power supply system is stopped.

In another embodiment, the processing circuit 30 outputs a RELAY_EN2 signal to the driving circuit 40, and the load current of the energy storage group 200 is greater than the second preset current and less than the first preset current, and the RELAY_EN signal output by the MCU is at a high level, so as to control the MOS transistor Q2 in the driving circuit 40 to be closed, so as to control the RELAY K1 to be closed, and the energy storage group 200 can supply power to the target power supply system.

In this way, the driving circuit 40 controls the on/off of the switch module 10 according to the control signal output by the processing circuit 30, so as to control the on/off of the energy storage group 200 and the output port 300.

In some embodiments, the circuit structure 100 further includes a power supply circuit 50, where the power supply circuit 50 is connected to the energy storage group 200, and the power supply circuit 50 is configured to adjust an output voltage of the energy storage group 200 to a preset voltage to provide the preset voltage to the processing circuit 30.

Specifically, referring to fig. 4, the power supply circuit 50 includes an LDO power supply circuit, and the preset voltage may be a preset voltage value, which is not limited herein. The power supply circuit 50 adjusts the output voltage of the energy storage group 200 to a preset voltage to be provided to the processing circuit 30, and supplies power to the processing circuit 30 so that the processing circuit 30 can work. In one embodiment, if the preset voltage is 5V, the LDO power supply circuit adjusts the output voltage of the energy storage group 200 to 5V and then provides the output voltage to the processing circuit 30, i.e. provides power to the MCU in the processing circuit 30, so that the MCU can work normally.

In this way, the power supply circuit 50 can adjust the output voltage of the energy storage set 200 to a preset voltage to provide the processing circuit 30 to power the processing circuit 30, so that the processing circuit 30 can operate.

In some embodiments, the circuit structure 100 further includes a prompt module 60, where the prompt module 60 is connected to the processing circuit 30, and the prompt module 60 is configured to issue a prompt when the load current is greater than the first preset current.

Specifically, referring to fig. 5, the prompt module 60 includes an LED lamp including an LED2 and an LED3. In the case that the load current is greater than the first preset current, the processing circuit 30 outputs a first control signal to control the switch module 10 to be turned off so as to stop the power supply of the energy storage group 200 to the target power supply system, and meanwhile, the processing circuit 30 controls the prompt module 60 to work and sends out a prompt to prompt the user to make a treatment.

In one embodiment, the LED3 is a RED light, and when the load current is greater than the first preset current, the detection circuit 20 detects the voltages at two ends of the relay K1 and inputs the detected voltages to the MCU, the MCU processes the voltages at two ends of the relay K1 to obtain the load current, and because the load current is greater than the first preset current, the MCU outputs a low level to the driving circuit 50 to enable the gate of the MOS transistor Q2 to input a low level, the MOS transistor Q2 is turned off, and the relay K1 is controlled to be turned off so as to enable the energy storage group 200 to be disconnected from the output port 300, and meanwhile, the MCU outputs a red_led signal to the LED3 of the prompt module 60 as a high level, and the LED3 works to light the RED light to prompt the user to process.

In another embodiment, the LED2 is a green light, and when the load current is greater than the second preset current and less than the first preset current, the voltage at two ends of the relay K1 is detected by the detection circuit 20 and then input into the MCU, the MCU processes the voltage at two ends of the relay K1 to obtain the load current, and since the load current is greater than the second preset current and less than the first preset current, the MCU outputs a high level to the driving circuit 50, so that the drain electrode and the source electrode of the MOS transistor are turned on, and the relay can be closed; meanwhile, the MCU sets the green_LED signal output by the LED2 of the prompt module 60 to be high level, and the LED2 works to light up a GREEN light.

In this way, the prompt module 60 can work to give a prompt to remind the user to process in time when the load current is greater than the first preset current.

In some embodiments, the circuit structure 100 further includes at least one of an energy storage group voltage detection unit, a reverse connection detection unit, and a target power supply system voltage detection unit, where the energy storage group voltage detection unit is configured to disconnect the switch module 10 if the voltage of the energy storage group 200 does not conform to the first preset range; the reverse connection detection unit is used for disconnecting the switch module 10 under the condition that the energy storage group 200 is reversely connected with the target power supply system; the target power supply system voltage detection unit is configured to turn off the switching module 10 if the voltage of the target power supply system does not conform to the second preset range.

Specifically, referring to fig. 3, in one embodiment, the reverse connection detecting unit outputs a c_en signal, and in the case that the energy storage group 200 is normally connected to the target power supply system, the c_en signal output by the reverse connection detecting unit is at a high level, the gate of the triode Q1 inputs a high level, and the source and the drain of the triode Q1 are turned on, so that the relay K1 can be closed; in the case that the energy storage group 200 is reversely connected to the target power supply system, the c_en signal output by the reverse connection detecting unit is at a low level, and the gate of the triode Q1 is input at a low level, the triode Q1 is disconnected, so that the relay K1 is disconnected to disconnect the energy storage group 200 from the output port 300.

In this way, the switch module 10 may be controlled to be turned off when the voltage of the energy storage group 200 does not conform to the first preset range, and the voltage of the energy storage group 200 for reversely connecting the target power supply system and the target power supply system does not conform to the second preset range, so as to avoid abnormal connection between the energy storage group 200 and the output port 300.

Referring to fig. 6, a power supply apparatus 1000 according to an embodiment of the present utility model includes a housing 400 and the circuit structure 100 according to any one of the above embodiments, and the circuit structure 100 is disposed in the housing 400.

Specifically, the housing 400 may be made of plastic, metal, or the like, and the housing 400 may provide protection for the power supply apparatus 1000, thereby reducing or avoiding the influence of dust, moisture, or the like, received by the power supply apparatus 1000 from the outside.

In this way, the power supply apparatus 1000 detects the voltages at the two ends of the switch module 10 through the circuit structure 100 according to any one of the embodiments to obtain the load current output from the energy storage group 200 to the target power supply system, so that no additional current sampling resistor is required, the structure is simple, and the material cost is reduced.

The cable according to an embodiment of the present utility model includes a housing 400 and the circuit structure 100 according to any one of the above embodiments, the circuit structure 100 being disposed within the housing 400, the outlet 300 including a first clamp and a second clamp, the first clamp and the second clamp being for connecting to a target power supply system; the cable further includes a pluggable interface for pluggable connection to the energy storage pack 200.

In this way, the cable detects the voltages at the two ends of the switch module 10 through the circuit structure 100 according to any one of the embodiments to obtain the load current output from the energy storage group 200 to the target power supply system, so that no additional current sampling resistor is required, the structure is simple, and the material cost is reduced.

In the present specification, the term "connected" is to be interpreted broadly, and may include, for example, a fixed connection, a removable connection, or an integral connection; can include direct connection, indirect connection through intermediate media, and communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

Furthermore, the schematic representations of the above terms are not necessarily for the same embodiments or examples. Those skilled in the art may combine and combine the features of the different embodiments or examples described in this specification and of the different embodiments or examples without contradiction.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present utility model in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present utility model.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (14)

1. A circuit structure for controlling the on-off of an energy storage bank and an outlet for connecting a target power supply system comprising at least one of a starter and an automotive battery, the circuit structure comprising:

the switch module is used for controlling the on-off of the energy storage group and the output port;

the detection circuit is used for detecting voltages at two ends of the switch module;

and the processing circuit is used for processing the voltages at two ends of the switch module to obtain the load current output by the energy storage group to the target power supply system.

2. The circuit arrangement of claim 1, wherein the processing circuit is further configured to output a control signal to control the switching of the switching module according to the load current.

3. The circuit arrangement according to claim 2, wherein the processing circuit is configured to output a control signal according to the load current and a preset current, and the switching module is turned off if the control signal is a first control signal; and when the control signal is a second control signal, the switch module is closed.

4. A circuit arrangement according to claim 3, wherein the preset current comprises a first preset current, the processing circuit being arranged to output the first control signal in case the load current is greater than the first preset current; and/or, the processing circuit is used for outputting the second control signal under the condition that the load current is smaller than the first preset current.

5. The circuit structure of claim 4, wherein the preset current further comprises a second preset current, the processing circuit configured to output the second control signal if the load current is greater than the second preset current, the second preset current being less than the first preset current.

6. The circuit structure according to claim 1, wherein the switch module comprises a relay or a MOS transistor, the switch module is connected to the positive terminal line of the energy storage group, and the load current is a current of the positive terminal line of the energy storage group.

7. The circuit structure of claim 1, wherein the detection circuit comprises:

a first detection circuit for detecting a voltage of a first end of the switch module;

and the second detection circuit is used for detecting the voltage of the second end of the switch module.

8. The circuit arrangement of claim 7, wherein the first detection circuit comprises a first voltage divider resistor and a second voltage divider resistor, the voltage of the first voltage divider resistor or the voltage of the second voltage divider resistor being used to characterize the voltage of the first end of the switch module; the second detection circuit comprises a third voltage dividing resistor and a fourth voltage dividing resistor, and the voltage of the third voltage dividing resistor or the voltage of the fourth voltage dividing resistor is used for representing the voltage of the second end of the switch module.

9. The circuit structure of claim 1, wherein the circuit structure further comprises:

the driving circuit is used for connecting the processing circuit with the switch module, the processing circuit is also used for outputting a control signal according to the load current, and the driving circuit is used for controlling the on-off of the switch module according to the control signal.

10. The circuit structure of claim 1, wherein the circuit structure further comprises:

the power supply circuit is connected with the energy storage group and is used for adjusting the output voltage of the energy storage group to be a preset voltage so as to be provided for the processing circuit.

11. The circuit structure of claim 1, wherein the circuit structure further comprises:

the prompting module is connected with the processing circuit, and is used for sending out a prompt under the condition that the load current is larger than a first preset current.

12. The circuit structure of claim 1, further comprising at least one of a storage battery voltage detection unit, a reverse connection detection unit, and a target power supply system voltage detection unit, wherein,

the energy storage group voltage detection unit is used for switching off the switch module under the condition that the voltage of the energy storage group does not accord with a first preset range;

the reverse connection detection unit is used for disconnecting the switch module under the condition that the energy storage group is reversely connected with the target power supply system;

the target power supply system voltage detection unit is used for switching off the switch module under the condition that the voltage of the target power supply system does not accord with a second preset range.

13. A power supply device, characterized in that it comprises a housing and a circuit arrangement according to any one of claims 1-12, which is arranged in the housing.

14. A cable comprising a housing and the circuit arrangement of any one of claims 1-12, the circuit arrangement being disposed within the housing, the outlet comprising a first clamp and a second clamp, the first clamp and the second clamp being for connection to the target power supply system;

the cable also comprises a pluggable interface, and the pluggable interface is used for pluggable connection of the energy storage group.