Electric energy conversion circuit, power supply circuit and electronic equipment

Abstract

The utility model discloses an electric energy conversion circuit, a power supply circuit and electronic equipment. The electric energy conversion circuit comprises a first input end, a second input end, a first output end, a second output end, a switch regulation circuit and a short-circuit current sharing circuit. The first input end and the second input end are used for being coupled with the first end and the second end of the power input circuit respectively, the switch adjusting circuit is coupled with the first input end, the second input end and the first output end, and the short-circuit current sharing circuit is coupled between the second input end and the second output end. According to the electric energy conversion circuit, the second input end and the second output end are directly connected through the short-circuit current sharing circuit, so that the configuration requirement of a conductor connecting line for realizing connection between the switch adjusting circuit and the second input end on the through-current capability can be reduced; the overall manufacturing cost of the electric energy conversion circuit can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power supply, in particular to an electric energy conversion circuit, a power supply circuit and an electronic device. BACKGROUND

[0002] Nowadays, in the electric energy conversion circuit using power supply input to supply power to the load, especially in the use of DC power supply, the power supply positive and negative input terminals are usually spaced apart from the power supply positive and negative output terminals, that is, the power supply positive and negative input terminals are respectively connected to the power supply positive and negative output terminals through the electric energy conversion circuit, so that each connection line in the electric energy conversion circuit needs to be configured with the highest current-carrying capacity, thereby increasing the overall manufacturing cost. CONTENT OF THE UTILITY MODEL

[0003] The technical problem solved by the present application is to provide an electric energy conversion circuit, a power supply circuit and an electronic device, which can solve the problem that each connection line in the electric energy conversion circuit needs to be configured with the highest current-carrying capacity, thereby increasing the overall manufacturing cost.

[0004] To solve the above technical problems, one technical solution adopted by the present application is to provide an electric energy conversion circuit, which comprises: a first input terminal and a second input terminal, respectively used for coupling with a first end and a second end of a power supply input circuit; a first output terminal and a second output terminal; a switch adjustment circuit coupled with the first input terminal, the second input terminal and the first output terminal; and a short-circuit current sharing circuit coupled between the second input terminal and the second output terminal.

[0005] The power supply input circuit has a DC output, the first input terminal is a positive input terminal, the second input terminal is a negative input terminal, the first output terminal is a positive output terminal, and the second output terminal is a negative output terminal; or, the first input terminal is a negative input terminal, the second input terminal is a positive input terminal, the first output terminal is a negative output terminal, and the second output terminal is a positive output terminal.

[0006] The switch adjustment circuit has a first connection line, a second connection line and a third connection line, the first connection line is coupled with the first input terminal, the second connection line is coupled with the second input terminal, and the third connection line is coupled with the first output terminal.

[0007] The current-carrying capacity of the first connection line is greater than that of the second connection line and that of the third connection line; the sum of the first current in the first connection line, the second current in the second connection line and the third current in the third connection line is zero.

[0008] The short-circuit current-sharing circuit includes a control switch tube, a second end of the control switch tube is coupled to the second input end, a third end of the control switch tube is coupled to the second output end, and a first end of the control switch tube is used for being coupled to the control circuit; or the short-circuit current-sharing circuit includes a short-circuit wire, and the short-circuit wire is coupled between the second input end and the second output end.

[0009] The number of the switch regulating circuits is at least two, and each switch regulating circuit is coupled to the first input end, the second input end and the first output end.

[0010] The switch regulating circuit includes a first inductor, a first switch tube, a first diode and a first capacitor, a first end of the first inductor is coupled to the first input end, a second end of the first inductor is coupled to a second end of the first switch tube and a first end of the first diode, a second end of the first diode is coupled to a first end of the first capacitor and the first output end, a third end of the first switch tube is coupled to the second input end and a second end of the first capacitor, and a first end of the first switch tube is used for being coupled to the control circuit.

[0011] The switch regulating circuit includes a second switch tube, a second diode, a second inductor and a second capacitor, a second end of the second switch tube is coupled to the first input end, a third end of the second switch tube is coupled to a second end of the second diode and a first end of the second inductor, a second end of the second inductor is coupled to a first end of the second capacitor and the first output end, a first end of the second diode is coupled to the second input end and a second end of the second capacitor, and a first end of the second switch tube is used for being coupled to the control circuit.

[0012] To solve the above technical problem, another technical solution adopted by the present application is to provide a power supply circuit, wherein the power supply circuit includes a power supply input circuit, an electric energy conversion circuit and a control circuit, the electric energy conversion circuit is coupled to the power supply input circuit and the control circuit; wherein the electric energy conversion circuit is the electric energy conversion circuit as claimed in any one of the above.

[0013] To solve the above technical problem, another technical solution adopted by the present application is to provide an electronic device, wherein the electronic device includes a shell and a signal function circuit connected to the shell; wherein the signal function circuit is the electric energy conversion circuit as claimed in any one of the above, or the power supply circuit as claimed in the above.

[0014] The beneficial effects of the present application are: different from the prior art, the first input end and the second input end in the power conversion circuit provided by the present application are respectively used for being coupled with the first end and the second end of the power input circuit; the switch regulating circuit is coupled with the first input end, the second input end and the first output end; the short-circuit current sharing circuit is coupled between the second input end and the second output end, so as to directly connect the second input end and the second output end by using the short-circuit current sharing circuit, effectively reduce the configuration requirement of the conductor connection line for realizing the connection of the switch regulating circuit and the second input end on the through-flow capacity, so as to reduce the overall manufacturing cost of the power conversion circuit. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0016] Figure 1 is a structural schematic diagram of a first embodiment of the power conversion circuit of the present application;

[0017] Figure 2 is a structural schematic diagram of a second embodiment of the power conversion circuit of the present application;

[0018] Figure 3 is a structural schematic diagram of a third embodiment of the power conversion circuit of the present application;

[0019] Figure 4 is a structural schematic diagram of a fourth embodiment of the power conversion circuit of the present application;

[0020] Figure 5 is a structural schematic diagram of a fifth embodiment of the power conversion circuit of the present application;

[0021] Figure 6 is a structural schematic diagram of an embodiment of the power supply circuit of the present application;

[0022] Figure 7 is a structural schematic diagram of an embodiment of the electronic device of the present application. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments 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 are within the scope of protection of the present application.

[0024] The terms "first," "second," and "third" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0025] In this document, the term "implementation" means that a specific feature, structure, or characteristic described in connection with an implementation may be included in at least one implementation of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same implementation, nor is it a separate or alternative implementation mutually exclusive with other implementations. It will be explicitly and implicitly understood by those skilled in the art that the implementations described herein can be combined with other implementations.

[0026] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of the first embodiment of the power conversion circuit of this application. In this embodiment, the power conversion circuit 10 includes: a first input terminal 11, a second input terminal 12, a first output terminal 13, a second output terminal 14, a switching adjustment circuit 15, and a short-circuit current sharing circuit 16.

[0028] The power conversion circuit 10 provided in this application is specifically used in scenarios where power is supplied to a load using a power input to meet the load's power demand. This embodiment does not limit this application.

[0029] Specifically, the first input terminal 11 and the second input terminal 12 are respectively used to couple with the external power input circuit 101 to receive the AC input signal or DC input signal provided by the power input circuit 101.

[0030] It is worth noting that the power input circuit 101 can be a power supply of any reasonable AC or DC power supply, such as a power grid power supply, a photovoltaic power supply, an independent generator, a battery, or the like, or a power regulation circuit coupled to the AC or DC power supply to convert and regulate the power output of the AC or DC power supply to obtain an AC input signal or a DC input signal. The present embodiment is not limited in this regard.

[0031] In addition, "coupled" herein includes any direct and indirect connection means. Therefore, if the first circuit is coupled to the second circuit, it means that the first circuit can be directly connected to the second circuit through electrical connection or wireless transmission, optical transmission, or the like, or indirectly connected to the second circuit through other circuits or connection means.

[0032] The short-circuit current sharing circuit 16 is coupled between the second input end 12 and the second output end 14 to receive the AC input signal or the DC input signal provided by the first input end 11 and the second input end 12 through the switch regulation circuit 15, and to regulate the AC input signal or the DC input signal to obtain a power output signal. At the same time, the second output end 14 is short-circuited with the second input end 12 through the short-circuit current sharing circuit 16 independent of the switch regulation circuit 15 to provide a freewheeling circuit, so that the power output signal is provided to the back-end functional circuit through the first output end 13 and the second output end 14.

[0033] It is worth noting that the first output end 13 and the second output end 14 are specifically used to be coupled to the back-end functional circuit to provide the power output signal to the back-end functional circuit; the back-end functional circuit can be a load circuit operating with the power output signal, or a lower-level circuit implementing current conversion, frequency regulation, or other arbitrary signal functions with the power output signal, and the present application is not limited in this regard.

[0034] The above scheme directly connects the second input end 12 and the second output end 14 through the short-circuit current sharing circuit 16, effectively reducing the configuration requirement of the conductor connecting line connecting the switch regulation circuit 15 and the second input end 12 to the through-flow capability, thereby reducing the overall manufacturing cost of the power conversion circuit 10. Compared with connecting the second input end 12 and the second output end 14 through the line in the switch regulation circuit 15, the short-circuit current sharing circuit 16 has a lower configuration requirement for the through-flow capability than the line, thereby reducing the manufacturing cost.

[0035] It is worth mentioning that the current-carrying capacity, i.e. the current-carrying capacity, is the maximum current that the conductor can continuously carry without causing its stable temperature to exceed the specified value under specified conditions. When the unit length and material are the same, the cross-sectional area of the conductor will directly affect the current-carrying capacity of the conductor connection line, so when the current flowing through the conductor connection line is larger, the cross-sectional area also needs to be configured larger, thereby making the corresponding configuration cost larger.

[0036] Wherein, when the second output end 14 is short-circuited with the second input end 12 by the short-circuit current-sharing circuit 16 independent of the switch regulating circuit 15 to provide a freewheeling loop, compared with connecting the second input end 12 with the second output end 14 through the line in the switch regulating circuit 15, i.e. the current size on the conductor connection line connecting the second input end 12 with the switch regulating circuit 15 can be reduced, thereby the configuration requirement of the current-carrying capacity can be effectively reduced. And the actual cross-sectional area of the short-circuit line in the short-circuit current-sharing circuit 16 can be reduced, only needs to meet the freewheeling loop.

[0037] In some embodiments, the power input circuit 101 has a direct current output, i.e. corresponds to a direct current power supply or is connected to a direct current power supply, and the first input end 11 corresponds to a positive input end, the second input end 12 is a negative input end, the first output end 13 is a positive output end, and the second output end 14 is a negative output end; or, the first input end 11 is a negative input end, the second input end 12 is a positive input end, the first output end 13 is a negative output end, and the second output end 14 is a positive output end.

[0038] Therefore, to reduce the configuration requirement of the current-carrying capacity of the conductor connection line connecting the switch regulating circuit 15 with the second input end 12, specifically, the positive input end can be short-circuited with the positive output end by the short-circuit current-sharing circuit 16 to adjust the configuration requirement of the current-carrying capacity of the conductor connection line between the negative input end and the switch regulating circuit 15, or the negative input end can be short-circuited with the negative output end by the short-circuit current-sharing circuit 16 to adjust the configuration requirement of the current-carrying capacity of the conductor connection line between the positive input end and the switch regulating circuit 15.

[0039] In some embodiments, the short-circuit current-sharing circuit 16 specifically can include a short-circuit line (not shown in the figure) coupled between the second input end 12 and the second output end 14, for providing the switch regulating circuit 15 with a freewheeling loop from the second output end 14 to the second input end 12.

[0040] In another embodiment, the short-circuit current sharing circuit 16 can further include a control switch tube (not shown in the figure), a second end of the control switch tube coupled to the second input end 12, a third end of the control switch tube coupled to the second output end 14, and a first end of the control switch tube configured to be coupled to a control circuit (not shown in the figure) for receiving a driving control signal sent by the control circuit, and the second end and the third end of the control switch tube are triggered to be turned on or turned off under the action of the driving control signal, so as to control the on-off of the power supply output provided by the first output end 13 and the second output end 14.

[0041] In some embodiments, the control switch tube and each "switch tube" mentioned herein can be one of any reasonable switch device such as a MOS (Metal Oxide Semiconductor Field Effect Transistor), a high-frequency transistor, a transistor, a thyristor, an IGBT (Insulated Gate Bipolar Transistor), etc., and the present application does not limit this.

[0042] The first end of the switch tube corresponds to a control end, so that when the driving control signal is received at the first end of the switch tube, the second end and the third end of the switch tube can be triggered to be turned on or turned off in response to the driving control signal.

[0043] In some embodiments, the driving control signal can be one or more of any reasonable control signal such as a PWM (Pulse Width Modulation) signal or a PFM (Pulse Frequency Modulation) signal, and the present application does not limit this.

[0044] In some embodiments, the control circuit can include one of any reasonable circuit unit with signal processing function such as a control chip, an MCU (Micro Controller Unit) circuit, a CPU (Central Processing Unit), a single-chip microcomputer, a field programmable gate array, a programmable logic device, a discrete gate or transistor logic device, discrete hardware, etc., and the present application does not limit this.

[0045] Please refer to Figure 2 , Figure 2 is a structural schematic diagram of a second embodiment of the power conversion circuit of the present application. The power conversion circuit in the present embodiment is different from the first embodiment of the power conversion circuit provided by the present application in that the number of switch adjustment circuits 25 in the power conversion circuit 20 is at least two.

[0046] At least two switching regulation circuits 25 can be switching regulation circuit 1, switching regulation circuit 2, …, switching regulation circuit n (n is an integer greater than 1) in particular, each switching regulation circuit 25 is coupled to the first input end 21, the second input end 22 and the first output end 23, that is, each switching regulation circuit 25 is connected in parallel.

[0047] It can be understood that in the application of at least two switching regulation circuits 25 in parallel, if each switching regulation circuit 25 is directly short-circuited with the second output end 24, the current on the short-circuit line will not be controlled, which may cause uneven current problems, that is, the current sharing characteristics on the short-circuit line will completely rely on line impedance sharing, which is easy to cause uneven current. By canceling the short-circuit line and uniformly using the short-circuit current sharing circuit 26 to realize the short-circuit between the second input end 22 and the second output end 24, the current of the power supply output signal passes through the separate short-circuit current sharing circuit 26 from the second output end 24 to the second input end 22, and does not pass through the parallel part. The current of the power supply output signal will not cause uneven current, and the uneven current degree of the system is also inhibited from the root.

[0048] Please refer to Figure 3 , Figure 3 is a structural schematic diagram of a third embodiment of the power conversion circuit of the present application. The power conversion circuit in the embodiment is different from the first embodiment of the power conversion circuit provided by the present application in that the switching regulation circuit 35 in the power conversion circuit 30 has a first connection line 351, a second connection line 352 and a third connection line 353.

[0049] The first connection line 351 is coupled to the first input end 31, the second connection line 352 is coupled to the second input end 32, and the third connection line 353 is coupled to the first output end 33, so as to realize the connection of the switching regulation circuit 35 with the first input end 31, the second input end 32 and the first output end 33.

[0050] At this time, the sum of the first current I1 in the first connection line 351, the second current I2 in the second connection line 352 and the third current I3 in the third connection line 353 is zero, that is, I1+I2+I3=0, and the equivalent common-mode inductance in the line of the power conversion circuit 30 will not be saturated. The second current I2 can adjust the current demand according to the boost / buck ratio of the switching regulation circuit 35.

[0051] It is worth noting that the core principle of equivalent common-mode inductance is to simulate the electromagnetic characteristics of common-mode inductance through circuit design. The main role of common-mode inductance is to suppress common-mode noise, that is, noise signals with equal amplitude and same phase. By introducing equivalent inductance, resistance and capacitance elements in the circuit, the filtering effect of common-mode inductance can be simulated. Specifically, the equivalent circuit usually includes an inductance element and a resistance element in parallel with a capacitance, which can simulate the impedance characteristics of common-mode inductance, so as to achieve the purpose of suppressing common-mode noise.

[0052] In some embodiments, the first connection line 351 has a larger current carrying capacity than the second connection line 352, and the first connection line 351 has a larger current carrying capacity than the third connection line 353, so as to effectively reduce the configuration requirement of the cross-sectional area of the first connection line 351, thereby reducing the manufacturing cost.

[0053] In some embodiments, the switching regulation circuit 35 further includes a first inductor L1, a first switch Q1, a first diode D1, and a first capacitor C1.

[0054] The first end of the first inductor L1 is coupled to the first input terminal 31, the second end of the first inductor L1 is coupled to the second end of the first switch Q1 and the first end of the first diode D1, the second end of the first diode D1 is coupled to the first end of the first capacitor C1 and the first output terminal 33, the third end of the first switch Q1 is coupled to the second input terminal 32 and the second end of the first capacitor C1, and the first end of the first switch Q1 is used for being coupled to the control circuit.

[0055] It can be understood that in the present embodiment, the first input terminal 31, the second input terminal 32, the first output terminal 33, the second output terminal 34 and the short-circuit current sharing circuit 36 are respectively connected to the first input terminal 11, the second input terminal 12, the first output terminal 13, the second output terminal 14 and the short-circuit current sharing circuit 16, which will be described in detail in the first embodiment and related text, and will not be described here. Figure 1

[0056] Please refer to Figure 4 , Figure 4 is a structural schematic diagram of the fourth embodiment of the power conversion circuit of the present application. The power conversion circuit in the present embodiment is different from the third embodiment of the power conversion circuit provided by the present application in that the number of the switching regulation circuits 45 in the power conversion circuit 40 is at least two.

[0057] It can be understood that each of the at least two switching regulation circuits 45 connected in parallel is connected to the first input terminal 41, the second input terminal 42 and the first output terminal 43 by the first connection line 451, the second connection line 452 and the third connection line 453 respectively, and the short-circuit current sharing circuit 46 is a short-circuit line.​

[0058] In the absence of losses, Uin*Iin=Uout*Iout; wherein Uin is the input voltage, Iin is the input current, Uout is the output voltage, and Iout is the output current.

[0059] And because of the difference between the input voltage Uin and the output voltage Uout, the corresponding input current Iin and the output current Iout are not consistent, after changing the 4-port connection scheme to a 3-port connection, the output negative network will be shorted with the input negative network externally, that is, the second output end 44 is connected with the second input end 42 through the short-circuit current sharing circuit 46, and is connected with the reference ground wire of the at least two switch regulating circuits 45 connected in parallel, at this time, Iin+Iout+IGND=0; IWND is the reference ground wire current; after such connection, the output current Iout will return to the second input end 42 through a separate line, that is, the short-circuit current sharing circuit 46, and will not pass through the parallel part, and this output current Iout will not produce uneven current.

[0060] At the same time, the reference ground wire current IWND will be completely controlled by the boost / buck ratio of the at least two switch regulating circuits 45 connected in parallel, and the current direction is opposite when realizing the boost or buck function, so that controlled current sharing can be realized.

[0061] For example, at this time Ik=I2, Ik is the switching current, which is controlled by the control circuit, and the current sharing of the second current I2 in each second connection line 452 can be directly satisfied by adjusting the first current I1 in each first connection line 451, thereby solving the technical problem of uneven current of the system. And the actual cross-sectional area of the short-circuit line in the short-circuit current sharing circuit 46 can be reduced, and only needs to meet the freewheeling circuit.

[0062] For example: in the input 500V (volt, voltage unit) 100A (ampere, current unit), output 1000V 50A. In the scheme of using each switch regulating circuit 45 to separate the power supply positive and negative input end from the power supply positive and negative output end to realize power supply, it is necessary to configure the current passing ability corresponding to 100A*2+50A*2, four conductor connection lines, and after the short-circuit line in the short-circuit current sharing circuit 46 is used to realize the connection between the second input end 42 and the second output end 44, it is only necessary to configure the current passing ability corresponding to 100A*1+50A*2, three conductor connection lines, thereby effectively reducing the overall implementation cost of the power conversion circuit 40.

[0063] It can be understood that in the embodiment, the first input end 41, the second input end 42, the first output end 43, the second output end 44, the first connecting line 451, the second connecting line 452, the third connecting line 453 and the short-circuit current sharing circuit 46 are respectively the first input end 31, the second input end 32, the first output end 33, the second output end 34, the first connecting line 351, the second connecting line 352, the third connecting line 353 and the short-circuit current sharing circuit 36, please refer to Figure 3 and related text content, which will not be repeated here.

[0064] Please refer to Figure 5 , Figure 5 is a structural schematic diagram of the fifth embodiment of the power conversion circuit of the present application. The power conversion circuit in the embodiment is different from the fourth embodiment of the power conversion circuit provided by the present application in that the switching regulation circuit 55 in the power conversion circuit 50 further comprises a second switching tube Q2, a second diode D2, a second inductor L2 and a second capacitor C2.

[0065] The second end of the second switching tube Q2 is coupled to the first input end 51, the third end of the second switching tube Q2 is coupled to the second end of the second diode D2 and the first end of the second inductor L2, the second end of the second inductor L2 is coupled to the first end of the second capacitor C2 and the first output end 53, the first end of the second capacitor C2 is coupled to the second input end 52 and the second end of the second diode D2, and the first end of the second switching tube Q2 is used to be coupled to the control circuit.

[0066] In other embodiments, the switching regulation circuit 55 can also have other reasonable circuit forms, and the number can also be one, especially in the circuit for supplying power in parallel, the second input end 52 and the second output end 54 are connected through the short-circuit current sharing circuit 56, which can effectively reduce the configuration requirement of the conductor connecting line for connecting each switching regulation circuit 55 and the second input end 52 to the current-carrying capacity, which is determined by the actual application scene, and the present application does not limit it.

[0067] It can be understood that in the embodiment, the first input end 51, the second input end 52, the first output end 53, the second output end 54, the first connecting line 551, the second connecting line 552, the third connecting line 553 and the short-circuit current sharing circuit 56 are respectively the first input end 41, the second input end 42, the first output end 43, the second output end 44, the first connecting line 451, the second connecting line 452, the third connecting line 453 and the short-circuit current sharing circuit 46, please refer to Figure 4 and related text content, which will not be repeated here.

[0068] The present application also adopts a power supply circuit, please refer to Figure 6 ,Figure 6 is a structural schematic diagram of an embodiment of the power supply circuit of the present application. In the embodiment, the power supply circuit 60 comprises a power supply input circuit 61, an electric energy conversion circuit 62, and a control circuit 63, and the electric energy conversion circuit 62 is coupled to the power supply input circuit 61 and the control circuit 63.

[0069] It should be noted that the electric energy conversion circuit 62 described in the embodiment is the electric energy conversion circuit 10, the electric energy conversion circuit 20, the electric energy conversion circuit 30, the electric energy conversion circuit 40, or the electric energy conversion circuit 50 described in any of the above embodiments, and details are described in the above Figures 1-5 and related text contents, which will not be repeated here.

[0070] The present application also specifically adopts an electronic device, please refer to Figure 7 , Figure 7 is a structural schematic diagram of an embodiment of the electronic device of the present application. In the embodiment, the electronic device 70 comprises a housing 71 and a signal function circuit 72 connected to the housing 71.

[0071] It should be noted that the signal function circuit 72 described in the embodiment is the electric energy conversion circuit 10, the electric energy conversion circuit 20, the electric energy conversion circuit 30, the electric energy conversion circuit 40, or the electric energy conversion circuit 50, or the power supply circuit 60 described in any of the above embodiments, and details are described in the above Figures 1-6 and related text contents, which will not be repeated here.

[0072] The beneficial effects of the present application are: unlike the prior art, the first input end and the second input end in the electric energy conversion circuit provided by the present application are respectively used for coupling with the first end and the second end of the power supply input circuit; the switching regulation circuit is coupled to the first input end, the second input end, and the first output end; and the short-circuit current sharing circuit is coupled between the second input end and the second output end, so as to directly connect the second input end and the second output end by using the short-circuit current sharing circuit, effectively reducing the configuration requirement of the conductor connection line for connecting the switching regulation circuit and the second input end, thereby being able to reduce the overall manufacturing cost of the electric energy conversion circuit.

[0073] The above is only an embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent flow transformation using the content of the specification and drawings of the present application, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An electrical energy conversion circuit, characterized by The power conversion circuit comprises: a first input end and a second input end, respectively coupled with a first end and a second end of a power input circuit; a first output end and a second output end; a switch regulating circuit coupled with the first input end, the second input end and the first output end; a short-circuit current sharing circuit coupled between the second input end and the second output end.

2. The power conversion circuit according to claim 1, wherein: the power input circuit has a direct current output, the first input end is a positive input end, the second input end is a negative input end, the first output end is a positive output end, and the second output end is a negative output end; or, the first input end is a negative input end, the second input end is a positive input end, the first output end is a negative output end, and the second output end is a positive output end.

3. The power conversion circuit according to claim 1, wherein: the switch regulating circuit has a first connecting line, a second connecting line and a third connecting line, the first connecting line is coupled with the first input end, the second connecting line is coupled with the second input end, and the third connecting line is coupled with the first output end.

4. The power conversion circuit according to claim 3, wherein: the first connecting line has a current carrying capacity greater than that of the second connecting line and that of the third connecting line; a first current in the first connecting line, a second current in the second connecting line and a third current in the third connecting line have a sum of zero.

5. The power conversion circuit according to claim 1, wherein: the short-circuit current sharing circuit comprises a control switch tube, a second end of the control switch tube is coupled with the second input end, a third end of the control switch tube is coupled with the second output end, and a first end of the control switch tube is coupled with a control circuit; or, the short-circuit current sharing circuit comprises a short-circuit line coupled between the second input end and the second output end.

6. The power conversion circuit according to any one of claims 1-5, wherein: the number of the switch regulating circuits is at least two, and each of the switch regulating circuits is coupled with the first input end, the second input end and the first output end.

7. The power conversion circuit according to any one of claims 1-5, wherein: the switch regulating circuit comprises a first inductor, a first switch tube, a first diode and a first capacitor, a first end of the first inductor is coupled with the first input end, a second end of the first inductor is coupled with a second end of the first switch tube and a first end of the first diode, a second end of the first diode is coupled with a first end of the first capacitor and the first output end, a third end of the first switch tube is coupled with the second input end and a second end of the first capacitor, and a first end of the first switch tube is coupled with a control circuit.

8. The power conversion circuit according to any one of claims 1-5, wherein: ​ The switching regulating circuit comprises a second switch tube, a second diode, a second inductor and a second capacitor, a second end of the second switch tube is coupled to the first input end, a third end of the second switch tube is coupled to a second end of the second diode and a first end of the second inductor, a second end of the second inductor is coupled to a first end of the second capacitor and the first output end, a first end of the second diode is coupled to the second input end and a second end of the second capacitor, and a first end of the second switch tube is used for being coupled to the control circuit.

9. A power supply circuit, characterized by comprising: The power supply circuit comprises a power supply input circuit, an electric energy conversion circuit and a control circuit, the electric energy conversion circuit is coupled to the power supply input circuit and the control circuit; The electric energy conversion circuit is the electric energy conversion circuit according to any one of claims 1-8.

10. An electronic device, comprising: The electronic device comprises a shell and a signal function circuit connected to the shell; The signal function circuit is the electric energy conversion circuit according to any one of claims 1-8 or the power supply circuit according to claim 9.

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