CN221151205U - Circuit structure, power supply device and cable - Google Patents

Abstract

The utility model discloses a circuit structure, power supply equipment and a cable. When the input voltage is greater than or equal to a first preset voltage value, the enabling circuit is used for outputting an enabling signal so that the boosting circuit can boost and output the input voltage. In the circuit configuration of the present utility model, the booster circuit does not perform the boosting function when the value of the input voltage is relatively small. When the value of the input voltage is large enough, the booster circuit realizes the boosting effect, and the condition that the DC-DC booster circuit is damaged due to insufficient power supply is avoided.

Description

Circuit structure, power supply device and cable

Technical Field

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

Background

In the related art, after a DC-DC boost circuit is powered on, an input power supply starts to charge an input capacitor and an output capacitor of the DC-DC boost circuit from 0V, and a certain time is required to boost an input voltage value to a set voltage value due to a higher input capacitance value and an output capacitance value. When the set voltage value is far higher than the input voltage value, the DC-DC boost circuit is easy to damage due to insufficient power supply.

Disclosure of utility model

The embodiment of the utility model provides a circuit structure, power supply equipment and a cable.

The circuit structure provided by the embodiment of the utility model comprises an input circuit, an enabling circuit and a boost circuit, wherein the input circuit is used for generating an input voltage, the enabling circuit is used for generating an enabling signal, and the boost circuit is respectively connected with the input circuit and the enabling circuit. When the input voltage is greater than or equal to a first preset voltage value, the enabling circuit is used for outputting the enabling signal so that the boosting circuit can boost and output the input voltage.

In some embodiments, the input circuit includes an input capacitor and a power supply access terminal, and the power supply access terminal is configured to charge the input capacitor to generate the input voltage after the power supply access terminal is powered on.

In some embodiments, after the power-on time of the power access terminal reaches a preset time, the input voltage is greater than or equal to the first preset voltage value.

In some embodiments, after the power-on time of the power access terminal reaches a preset time, the voltage of the power access terminal is equal to the input voltage.

In some embodiments, after the power-on time of the power supply access terminal reaches a preset time, the voltage output by the enabling circuit is greater than or equal to a second preset voltage value to generate the enabling signal, so that the voltage boosting circuit boosts and outputs the input voltage.

In some embodiments, the input circuit includes a power supply access terminal, the input circuit is capable of generating an input voltage after the power supply access terminal is powered on, and the enabling circuit includes a voltage detection circuit, the voltage detection circuit is used for detecting a voltage of the power supply access terminal, and outputting the enabling signal when detecting that the voltage of the power supply access terminal is greater than or equal to a third preset voltage value.

In some embodiments, the voltage detection circuit includes a first resistor and a second resistor, one end of the first resistor is connected to the power supply access terminal, the first resistor and the second resistor are connected in series, and when the voltage of the power supply access terminal is greater than or equal to a third preset voltage value, the voltage of the first resistor is the enable signal.

In some embodiments, the input circuit includes a power supply access terminal, after the power supply access terminal is used for powering up, the input circuit can generate an input voltage, the enabling circuit includes a third resistor and a charging capacitor, a first end of the third resistor is connected to the power supply access terminal, the third resistor and the charging capacitor are arranged in parallel, and after the power up time of the power supply access terminal reaches a preset time, the voltage of the third resistor is the enabling signal.

In some embodiments, the input circuit includes a power supply access terminal, the input circuit is capable of generating an input voltage after the power supply access terminal is powered on, and the enabling circuit includes a delay controller, and the delay controller is used for outputting the enabling signal after a power-on time of the power supply access terminal reaches a preset time, so that the boosting circuit boosts and outputs the input voltage.

In some embodiments, the circuit structure further includes an electronic switch, and the voltage boosting circuit boosts the input voltage and outputs a voltage that can be used to drive the electronic switch to conduct.

In some embodiments, the circuit structure further comprises a power supply access terminal and an output terminal, and the electronic switch is used for controlling the connection/disconnection of the power supply access terminal and the output terminal.

In certain embodiments, the output is for connection to a target power supply system comprising at least one of a starter and a car battery.

An embodiment of the present utility model provides a power supply apparatus including a housing and the circuit structure of any of the above embodiments, the circuit structure being disposed within the housing.

The embodiment of the utility model provides a cable, which comprises a shell and the circuit structure of any one of the embodiments, wherein the circuit structure is arranged in the shell, the output end of the circuit structure comprises a first clamp and a second clamp, and the first clamp and the second clamp are used for being connected with a 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.

In the circuit structure, the power supply device and the cable of the embodiment of the utility model, the input circuit generates the input voltage, the enabling circuit generates the enabling signal, and when the input voltage is greater than or equal to the first preset voltage value, the enabling signal output by the enabling circuit can enable the boosting circuit to realize the boosting function, and the boosting circuit boosts and outputs the input voltage. When the value of the input voltage is relatively small, the booster circuit does not realize the boosting effect. When the value of the input voltage is sufficiently large, the booster circuit realizes a boosting function. When the booster circuit works in boosting, the value of the input voltage is large enough, so that the condition that the DC-DC booster circuit is damaged due to insufficient power supply is avoided.

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.

Drawings

The foregoing and/or additional aspects and advantages of the present 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 a circuit configuration of an embodiment of the present utility model;

FIG. 2 is a circuit schematic of a circuit configuration of an embodiment of the present utility model;

fig. 3 is a schematic diagram showing an output voltage variation of the booster circuit according to the embodiment of the present utility model;

fig. 4 is a schematic diagram of a circuit configuration of an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

In the related art, after a DC-DC boost circuit is powered on, an input power supply starts to charge an input capacitor and an output capacitor of the DC-DC boost circuit from 0V, and a certain time is required to boost an input voltage value to a set voltage value due to a higher input capacitance value and an output capacitance value. When the set voltage value is far higher than the input voltage value, the DC-DC booster circuit is insufficient in conduction voltage and incomplete in starting due to insufficient power supply, so that the internal power MOS tube of the DC-DC is burnt out, and the DC-DC booster circuit is damaged.

Referring to fig. 1, an embodiment of the present utility model provides a circuit structure 100, which includes an input circuit 10, an enable circuit 20 and a boost circuit 30, wherein the input circuit 10 is used for generating an input voltage, the enable circuit 20 is used for generating an enable signal, and the boost circuit 30 is respectively connected to the input circuit 10 and the enable circuit 20. When the input voltage is greater than or equal to the first preset voltage value, the enable circuit 20 is configured to output an enable signal to enable the boost circuit 30 to boost and output the input voltage.

Specifically, the input circuit 10 is connected to the booster circuit 30, and the input voltage generated by the input circuit 10 is connected to the booster circuit 30, and the booster circuit 30 can boost the input voltage and output the boosted voltage. The boost circuit 30 may be a boost chip U3 in fig. 2, the input voltage may be connected to the boost chip U3 through the VIN terminal, and the boost chip U3 may output from the LX terminal after boosting the voltage connected to the VIN terminal. The enable circuit 20 is connected to the boost circuit 30, and the enable signal generated by the enable circuit 20 can control the boost circuit 30 to realize the boost function, and the enable signal can be accessed to the boost chip U3 through the EN port. When the input voltage is greater than or equal to a first preset voltage value, the voltage accessed by the VIN end is greater than or equal to the first preset voltage value, the enabling signal accessed by the EN end enables the boosting chip U3 to start the boosting function, and the voltage accessed by the VIN end is boosted and then output from the LX end. Therefore, when the boosting chip U3 is started to perform the boosting function, the voltage connected to the VIN end is larger than or equal to a first preset voltage value, and when the voltage connected to the VIN end is larger than or equal to the first preset voltage value, the boosting circuit can be considered to have enough power supply voltage, so that the DC-DC internal power MOS can have normal driving voltage in the boosting process, and the internal power MOS cannot be burnt out due to insufficient MOS driving voltage.

In this way, when the value of the input voltage is greater than or equal to the first preset voltage value, the value of the input voltage may be considered to be sufficiently large, and at this time, the enable signal generated by the enable circuit 20 may start the boosting function of the boost circuit 30, so that the boost circuit 30 may boost and output the input voltage that is connected. When the input voltage is large enough, the booster circuit 30 realizes the boosting effect, so that the condition that the power MOS tube in the DC-DC booster circuit 30 is insufficient in conduction voltage and incomplete in opening due to insufficient power supply of the DC-DC booster circuit 30 is avoided, and the DC-DC booster circuit 30 is damaged is avoided.

In some embodiments, the input circuit 10 includes an input capacitor and a power supply access terminal, and after the power supply access terminal is powered up, the power supply access terminal is configured to charge the input capacitor to generate an input voltage.

Specifically, the power supply access terminal is used for accessing a power supply voltage, the positive electrode of the power supply access terminal may be bat+ in fig. 2, and the input capacitor may be any one or more of capacitors C13, C14, C15, and C16. After the power-on terminal is powered on, bat+ is connected to a power voltage to charge the capacitors C13, C14, C15 and C16, and the capacitors C13, C14, C15 and C16 generate corresponding charging voltages after being charged and are connected to the VIN terminal of the boost chip U3, where the VIN terminal of the boost chip U3 may be regarded as an input voltage to which the boost circuit 30 is connected.

In this way, after the power supply access terminal in the input circuit 10 is powered on, the voltage that the power supply access terminal accesses can generate the input voltage by charging the input capacitor.

In some embodiments, after the power-on time of the power access terminal reaches a preset time, the input voltage is greater than or equal to a first preset voltage value.

Specifically, after the power supply access terminal is powered on, the bat+ in fig. 2 charges the capacitors C13, C14, C15 and C16 to generate corresponding charging voltages, and the longer the power supply access terminal charges the capacitors C13, C14, C15 and C16, the larger the charging voltages of the capacitors C13, C14, C15 and C16. After the power-on time of the power-on end reaches the preset time, the charging time of the power-on end to the capacitors C13, C14, C15 and C16 also reaches the preset time, and the charging voltage of the capacitors C13, C14, C15 and C16 is greater than or equal to the first preset voltage. The charging voltage is connected to the VIN end of the boost chip U3, that is, after the power-on time of the power supply access end reaches the preset time, the voltage connected to the VIN end of the boost chip U3 is greater than or equal to the first preset voltage, at this time, the boost circuit can be considered to have enough power supply voltage, and the enable signal connected to the EN end of the boost chip U3 enables the boost chip U3 to start the boost function.

Thus, after the power-on time of the power supply access terminal reaches the preset time, the input voltage is greater than or equal to the first preset voltage value, and the boost circuit 30 starts the boost function.

In some embodiments, after the power-on time of the power access terminal reaches a preset time, the voltage of the power access terminal is equal to the input voltage.

Specifically, after the power supply access terminal is powered on, the bat+ in fig. 2 charges the capacitors C13, C14, C15 and C16 to generate corresponding charging voltages, and the charging voltages of the capacitors C13, C14, C15 and C16 increase during the charging process, and finally reach a stable value, i.e. a voltage value with the bat+. The charging voltage is connected to the VIN end of the boost chip U3 and is an input voltage. Therefore, the variation trend of the input voltage is the same as the charging voltage of the capacitors C13, C14, C15 and C16, the input voltage is continuously increased after the power-on terminal is electrified, and finally the input voltage is equal to the voltage of the power-on terminal when the input voltage is stable. After the power-on time of the power-on end reaches the preset time, the voltage accessed by the VIN end is stable and equal to the voltage of BAT+, and the voltage of the power-on end can be regarded as the maximum value which can be reached by the input voltage. When the voltage of the power supply access terminal is equal to the input voltage, the input voltage is larger than or equal to a first preset voltage value, and the enable signal accessed by the EN terminal of the boost chip U3 enables the boost chip U3 to start the boost function.

Thus, after the power-on time of the power access terminal reaches the preset time, the input voltage is stable, is equal to the voltage of the power access terminal, and is greater than or equal to the first preset voltage value, and the boost circuit 30 starts the boost function.

In some embodiments, after the power-on time of the power supply access terminal reaches the preset time, the voltage output by the enabling circuit 20 is greater than or equal to the second preset voltage value to generate the enabling signal, so that the boosting circuit 10 boosts and outputs the input voltage.

Specifically, the enable circuit 20 in fig. 2 outputs the enable voltage to the boost chip U3 through the EN terminal, and when the enable voltage of the boost chip U3 connected through the EN terminal is greater than or equal to the second preset voltage, the enable voltage connected through the EN terminal enables the boost chip U3 to start the boost operation. After the power-on time of the power supply access end reaches the preset time, namely, after BAT+ power-on reaches the preset time, when the voltage accessed by the VIN end of the boost chip U3 is larger than or equal to a first preset voltage value, the enabling voltage accessed by the EN end is larger than or equal to a second preset voltage, and the boost chip U3 starts boosting work.

In this way, the enable circuit 20 realizes the enable control of the booster circuit 30 by outputting the enable voltage.

In some embodiments, the input circuit 10 includes a power supply access terminal, and after the power supply access terminal is powered on, the input circuit is capable of generating an input voltage, and the enabling circuit 20 includes a voltage detection circuit for detecting a voltage of the power supply access terminal and outputting an enabling signal when detecting that the voltage of the power supply access terminal is greater than or equal to a third preset voltage value.

Specifically, the voltage may be detected by a voltage dividing resistor, or may be detected by a voltage detecting chip. The voltage detection circuit is used for detecting the voltage of the power supply access terminal, when the detected voltage of the power supply access terminal is greater than or equal to a third preset voltage, the voltage of the power supply access terminal can be considered to be large enough, and when the voltage of the power supply access terminal is large enough, the input voltage generated by the input voltage 10 can be considered to be large enough, and at the moment, the enabling circuit outputs an enabling signal to enable the boosting chip to start boosting operation.

Thus, the enable circuit 20 can output the enable signal when the voltage of the power supply access terminal is sufficiently large, so that the boost circuit 10 can start the boost function.

In some embodiments, the voltage detection circuit includes a first resistor and a second resistor, one end of the first resistor is connected to the power supply access terminal, the first resistor and the second resistor are connected in series, and when the voltage of the power supply access terminal is greater than or equal to a third preset voltage value, the voltage of the first resistor is an enable signal.

Specifically, the first resistor may be the resistor R41 in fig. 2, and the second resistor may be the resistor R38 in fig. 2, where the resistor R41 and the resistor R38 are serially connected, and the voltage of the resistor R41 is the enable voltage connected to the EN terminal of the boost chip U3. In the case of the parameter determination of the resistor R38 and the resistor R41, the voltage of the power supply access terminal can be detected by the voltage of the resistor R41 terminal, that is, the voltage of bat+ can be detected by the enable voltage of the EN terminal of the booster chip U3. Parameters of a proper resistor R38 and a proper resistor R41 can be set, and when the voltage of BAT+ is larger than a certain value, the voltage connected to the EN terminal is larger than or equal to a second preset voltage, so that the boosting function of the boosting chip U3 is started. When the voltage of bat+ is sufficiently large, it can be considered that the voltage connected to the VIN end of the boost chip U3 is greater than or equal to the first preset voltage value, and the voltage connected to the EN end is greater than or equal to the second preset voltage, so as to start the boost function of the boost chip U3.

In this way, the enabling circuit 20 may be configured as a voltage dividing circuit, and by setting a suitable voltage dividing ratio, the enabling signal of the voltage boosting circuit 30 is turned on when the input voltage is greater than or equal to the first preset voltage value.

In some embodiments, the input circuit 10 includes a power supply access terminal, after the power supply access terminal is used for powering up, the input circuit 10 is capable of generating an input voltage, the enabling circuit 20 includes a third resistor and a charging capacitor, a first end of the third resistor is connected to the power supply access terminal, the third resistor and the charging capacitor are arranged in parallel, and when a voltage of the power supply access terminal is greater than or equal to a third preset voltage value, the voltage of the third resistor is an enabling signal.

Specifically, the third resistor may be the resistor R41 in fig. 2, the charging capacitor may be the capacitor C21, and the enabling voltage is the voltage of the resistor R41 and is also the voltage of the capacitor C21. After the BAT+ end is electrified, the voltage of the BAT+ end charges the capacitor C21, the charging voltage of the capacitor C21 gradually rises, and when the charging voltage of the capacitor C21 is greater than or equal to a second preset voltage, the boosting function of the boosting chip U3 is started. Parameters of the capacitor C21 and the resistor R41 can be reasonably set, so that after BAT+ is electrified for a period of time, the enabling voltage is larger than or equal to the second preset voltage, and the boosting function of the boosting chip U3 is started. Under the condition that the time of BAT+ power-on is long enough, the charging time of the capacitors C13, C14, C15 and C16 can be considered to be long enough, the charging voltage is larger than or equal to the first preset voltage, namely the voltage accessed by the VIN end of the boost chip U3 is larger than or equal to the first preset voltage value, and at the moment, the voltage accessed by the EN end is larger than or equal to the second preset voltage, so that the boost function of the boost chip U3 is started.

In this way, the enabling circuit 20 may set the charging capacitor to perform delayed enabling control, and by setting the parameters of the capacitor, the enabling signal of the boost circuit 30 is turned on when the input voltage is greater than or equal to the first preset voltage value.

In some embodiments, the input circuit 10 includes a power supply access terminal, the input circuit is capable of generating an input voltage after the power supply access terminal is powered on, and the enabling circuit 20 includes a delay controller, and the delay controller is used for outputting an enabling signal after a power-on time of the power supply access terminal reaches a preset time, so that the boost circuit 30 boosts and outputs the input voltage.

Specifically, the EN terminal in fig. 2 may access a delay controller, which may be an MCU. MCU has the function of detecting the power-on time of BAT+, can control the output of enable signal through detecting the power-on time of BAT+, after BAT+ is electrified for a period of time, can consider that the charge time of electric capacity C13, C14, C15 and C16 is enough long, and the charge voltage is greater than or equal to first preset voltage, and the voltage that the VIN end of boost chip U3 inserts is greater than or equal to first preset voltage value, and MCU exports enable signal to boost chip U3 through the EN end at this moment, opens the boost function of boost chip U3.

In this way, delay enabling control of the boost chip U3 can be achieved by the delay controller.

In some embodiments, the boost circuit 30 may also generate the output voltage through the output capacitor after boosting the input voltage.

Specifically, the output capacitance may be one or more of capacitances C17, C18, C19, C20, and CE1 in fig. 2. After the boost chip U2 is boosted, the voltage is output through the LX end, and the voltage output by the LX end is charged through the output capacitor to generate an output voltage.

After the power supply terminal is powered up, the change condition of the output voltage value of the boost circuit 30 may refer to fig. 3, where the horizontal coordinate in fig. 3 represents time, and the vertical coordinate Vout represents the output voltage value. Before time t0, the power supply access terminal is not powered on, and the input voltage of the booster circuit 30 is zero. At time t0 to time t1, the power supply access terminal starts to power up, and the input voltage at this time is smaller than the first preset voltage, so that the booster circuit 30 cannot realize the boosting function, and the voltage output by the booster circuit 30 is the input voltage. The input voltage rises from zero and therefore the output voltage Vout also rises from zero. At time t1 to time t2, the value of the input voltage reaches the first preset voltage value, at this time, the enabling condition is still not triggered, the booster circuit 30 cannot realize the boosting function, the voltage output by the booster circuit 30 is the input voltage, and the output voltage Vout is kept stable. the time period from the time t1 to the time t2 can be set according to the stability requirement of the circuit, and if the value of the input voltage reaches the first preset voltage and the time from the time t1 to the time t2 is maintained, the input voltage can be considered to be maintained at a relatively large value, and the boost circuit 30 starts to realize the boost function after the time t 2. If the value of the input voltage drops below the first preset voltage value again from the time t1 to the time t2, the value of the input voltage may be considered to be unstable, and a situation that the input voltage is low may occur, so that the boost circuit cannot realize the boost function. The booster circuit 30 starts the booster function from time t2 to time t3, the voltage output from the booster circuit 30 is the voltage obtained by boosting the input voltage, the booster circuit 30 continuously charges the output capacitor after boosting the input voltage, and the output voltage Vout is the charge voltage of the output capacitor. The value of the output voltage gradually rises due to the output capacitance from time t2 to time t 3. After time t3, the charge voltage of the output capacitor reaches a stable value, and the output voltage of the booster circuit 30 gradually stabilizes.

In this way, the enabling circuit 20 can delay control the boost of the boost circuit 30, so that when the boost circuit 30 works, after the input voltage reaches a stable value, the boost enabling signal is started again, and the power MOS tube inside the boost chip has enough driving voltage in the DC-DC boost process. Therefore, the situation that the power MOS tube is damaged due to insufficient driving voltage in the boosting process of the power MOS tube is avoided.

Referring to fig. 4, in some embodiments, the circuit structure 100 further includes an electronic switch 40, and the voltage boosting circuit 30 boosts the input voltage and outputs the boosted voltage to drive the electronic switch 40 to be turned on.

Specifically, the electronic switch 40 may be a MOS transistor, a triode, a transistor, a field effect transistor, or the like. For example, the driving voltage for driving the NMOS transistor in the NMOS control circuit may be provided by the booster circuit 30.

In this way, the output voltage of the boost circuit 30 can be used to drive the electronic switch 40.

In some embodiments, the circuit structure 100 further includes an output terminal, and the electronic switch 40 is configured to control the connection/disconnection between the power supply access terminal and the output terminal.

Specifically, the booster circuit 30 may be applied to a start-up power supply, the output terminal is used for connecting an external load, and the electronic switch 40 controls the start-up power supply to externally supply/stop supplying power by controlling the connection/disconnection of the power supply access terminal and the output terminal.

In this way, the booster circuit 30 can be applied to the start-up power supply.

In some embodiments, the output is for connection to a target power supply system including at least one of a starter and a car battery.

Specifically, the output terminal is used for connecting to a target power supply system, and when the electronic switch 40 is turned on, the power supply access terminal is connected to the target power supply system. When the target power supply system is a starter or an automobile battery, the power supply access end can be used for accessing an external power supply of the automobile to supply power to each module of the automobile.

In this way, the booster circuit 30 can be applied to a starting power supply for supplying power to the vehicle, and the starting power supply can supply power to the vehicle when the driving voltage output from the booster circuit 30 drives the electronic switch 40 to be turned on.

An embodiment of the present utility model provides a power supply apparatus, including a housing and the circuit structure 100 of any of the above embodiments, where the circuit structure 100 is disposed in the housing.

Specifically, the power supply device includes an automobile starting power supply, and the driving voltage output from the booster circuit 30 in the circuit configuration 100 drives the electronic switch 40 to be turned on when the power supply device is used to supply electric power for ignition starting of the automobile.

In this way, the power supply apparatus uses the circuit structure 100 of any one of the above embodiments, and by performing enable control on the booster circuit 30 in the circuit structure 100, the situation that the booster circuit 30 is damaged due to insufficient power supply of the booster circuit 30 is avoided, and further the safety of the power supply apparatus is improved.

The embodiment of the utility model provides a cable, which comprises a shell and the circuit structure 100 of any one of the embodiments, wherein the circuit structure 100 is arranged in the shell, and the output end of the circuit structure comprises a first clamp and a second clamp which are used for being connected with a 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.

Specifically, when the automobile is started by striking a fire, electric energy is transmitted to a target power supply system through a cable by the energy storage group.

Thus, the ignition start of the automobile can be completed by using the cable, and the cable uses the circuit structure 100 of any one of the embodiments to enable the boost circuit 30 in the circuit structure 100, so that the situation that the boost circuit 30 is damaged due to insufficient power supply of the boost circuit 30 is avoided, and the safety of the cable is further improved.

In the circuit structure 100, the power supply device, and the cable according to the embodiments of the present utility model, the input circuit 10 generates the input voltage, the enable circuit 20 generates the enable signal, and when the input voltage is greater than or equal to the first preset voltage value, the enable signal output by the enable circuit 20 can enable the boost circuit 30 to achieve the boost function, and the boost circuit 30 boosts and outputs the input voltage. When the value of the input voltage is relatively small, the booster circuit 30 does not perform boosting. When the value of the input voltage is sufficiently large, the booster circuit 30 realizes a boosting action. When the booster circuit 30 is in boosting operation, the value of the input voltage is large enough, so that the situation that the DC-DC booster circuit 30 is damaged due to insufficient power supply is avoided.

In the description of the present specification, reference is made to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., meaning that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Furthermore, the term "coupled" is to be broadly interpreted and includes, for example, either permanently coupled, detachably coupled, or integrally coupled; 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.

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 from that shown or discussed, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments 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, the circuit structure comprising:

an input circuit for generating an input voltage;

An enable circuit for generating an enable signal;

And the boost circuit is respectively connected with the input circuit and the enabling circuit, and when the input voltage is greater than or equal to a first preset voltage value, the enabling circuit is used for outputting the enabling signal so that the boost circuit boosts the input voltage and outputs the boosted voltage.

2. The circuit arrangement of claim 1, wherein the input circuit comprises an input capacitor and a power supply access terminal, the power supply access terminal being configured to charge the input capacitor to generate the input voltage after the power supply access terminal is powered up.

3. The circuit structure of claim 2, wherein the input voltage is greater than or equal to the first predetermined voltage value after a power-up time of the power access terminal reaches a predetermined time.

4. The circuit structure of claim 2, wherein the voltage at the power access terminal is equal to the input voltage after the power-on time of the power access terminal reaches a preset time.

5. The circuit structure according to claim 2, wherein after the power-on time of the power supply access terminal reaches a preset time, the voltage output by the enabling circuit is greater than or equal to a second preset voltage value to generate the enabling signal, so that the voltage boosting circuit boosts and outputs the input voltage.

6. The circuit configuration of claim 1, wherein the input circuit includes a power supply access terminal, the input circuit is capable of generating an input voltage after the power supply access terminal is powered on, and the enable circuit includes a voltage detection circuit for detecting a voltage of the power supply access terminal and outputting the enable signal when the voltage of the power supply access terminal is detected to be greater than or equal to a third preset voltage value.

7. The circuit structure according to claim 6, wherein the voltage detection circuit includes a first resistor and a second resistor, one end of the first resistor is connected to the power supply access terminal, the first resistor and the second resistor are connected in series, and when the voltage of the power supply access terminal is greater than or equal to a third preset voltage value, the voltage of the first resistor is the enable signal.

8. The circuit structure of claim 1, wherein the input circuit includes a power supply access terminal, the input circuit is capable of generating an input voltage after the power supply access terminal is powered on, the enabling circuit includes a third resistor and a charging capacitor, a first end of the third resistor is connected to the power supply access terminal, the third resistor and the charging capacitor are arranged in parallel, and after a power-on time of the power supply access terminal reaches a preset time, a voltage of the third resistor is the enabling signal.

9. The circuit arrangement of claim 1, wherein the input circuit includes a power supply access terminal, the input circuit is capable of generating an input voltage after the power supply access terminal is powered on, and the enabling circuit includes a delay controller, the delay controller is configured to output the enabling signal after a power-on time of the power supply access terminal reaches a preset time, so that the boosting circuit boosts and outputs the input voltage.

10. The circuit structure of claim 1, further comprising an electronic switch, wherein the voltage boosting circuit boosts the input voltage and outputs a voltage that can be used to drive the electronic switch to conduct.

11. The circuit structure of claim 10, further comprising a power supply access terminal and an output terminal, wherein the electronic switch is configured to control the power supply access terminal to be connected/disconnected from the output terminal.

12. The circuit arrangement of claim 11, wherein the output is for connection to a target power supply system comprising at least one of a starter and a car battery.

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 structure of any one of claims 1-12, the circuit structure being disposed within the housing, an output of the circuit structure comprising a first clamp and a second clamp, the first clamp and the second clamp being configured to connect to a 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.