Current sharing control circuit of lamp controller and lighting system

Abstract

The utility model relates to the technical field of LED lamp control, and discloses a current sharing control circuit of a lamp controller and a lighting system, the current sharing control circuit comprises a control circuit, a first battery boost circuit and a second battery boost circuit, the control circuit controls the output voltage of each battery booster circuit according to the first input current from the first battery booster circuit and the second input current from the second battery booster circuit, so that the two input currents are in a preset current sharing state, and the output voltage is provided for the lamp body. Therefore, by providing the parallel connection mode of the battery booster circuits, the current sharing control of each battery booster circuit can be realized, the power supply efficiency can be improved, the independent control of the power supply voltage of each battery booster circuit can be realized, the independent work of double batteries can be supported, the working stability of the circuit can be improved, and the service life of the circuit can be prolonged. And the service lives of the batteries are basically consistent through current sharing control of the double batteries.

Description

Technical Field

[0001] This utility model relates to the field of LED lighting control technology, and in particular to a current sharing control circuit and lighting system for a lighting controller. Background Technology

[0002] Currently, LED lighting equipment needs to support dual battery interfaces (such as V-type battery interface and A-type battery interface) that can support different voltages (such as 14.4V, 26V or 28.8V) for charging, and each of the dual battery interfaces needs a power supply battery.

[0003] Existing dual-battery charging methods for lighting equipment primarily involve connecting two batteries in series and boosting them to the required voltage before supplying the power to the lighting equipment. However, practical experience has shown that this series-connected power supply method cannot support simultaneous power supply from batteries with different rated voltages, requiring additional voltage conversion. Furthermore, when one battery's charge is too low, the entire circuit will malfunction even if the other battery still has charge, resulting in low power supply efficiency. Therefore, proposing a novel current-sharing control scheme for dual-battery boosting to improve power supply efficiency and circuit stability is crucial. Utility Model Content

[0004] This invention provides a current sharing control circuit and lighting system for a lamp controller, which can realize current sharing control of each battery boost circuit, thereby improving power supply efficiency and circuit operation stability.

[0005] To solve the above-mentioned technical problems, the first aspect of this utility model discloses a current sharing control circuit for a lighting controller, the method comprising:

[0006] The current sharing control circuit includes a control circuit, a first battery boost circuit, and a second battery boost circuit, wherein:

[0007] The current input terminal of the control circuit is electrically connected to the current output terminal of the first battery boost circuit and the current output terminal of the second battery boost circuit, respectively. The voltage output terminal of the control circuit is electrically connected to the voltage input terminal of the first battery boost circuit and the voltage input terminal of the second battery boost circuit, respectively. The power supply terminal of the first battery boost circuit is used to electrically connect to the first battery, the power supply terminal of the second battery boost circuit is used to electrically connect to the second battery, and the voltage output terminals of the first battery boost circuit and the second battery boost circuit are used to electrically connect to the lamp body.

[0008] The control circuit is used to control the output voltage of the first battery boost circuit and the second battery boost circuit according to the first input current received from the first battery boost circuit and the second input current received from the second battery boost circuit, so that the discharge current of the first battery boost circuit and the second battery boost circuit is in a preset current sharing state, and the output voltage is used to provide the lamp body.

[0009] As an optional implementation, in the first aspect of this utility model, the control circuit includes a synchronous boost control circuit and a battery input current sharing circuit, wherein:

[0010] The first current input terminal of the synchronous boost control circuit is electrically connected to the current output terminal of the first battery boost circuit, and the second current input terminal of the synchronous boost control circuit is electrically connected to the current output terminal of the second battery boost circuit. Both the first and second current output terminals of the synchronous boost control circuit are electrically connected to the current input terminal of the battery input current sharing circuit. The voltage output terminal of the battery input current sharing circuit is electrically connected to the voltage input terminals of the first and second battery boost circuits, respectively. The power supply terminal of the synchronous boost control circuit is used to connect to the supply voltage of the target battery. The target battery includes at least one of the first battery, the second battery, and other batteries.

[0011] The synchronous boost control circuit is used to acquire the first input current of the first battery boost circuit according to the first current input terminal of the synchronous boost control circuit, and to acquire the second input current of the second battery boost circuit according to the second current input terminal of the synchronous boost control circuit; and to direct the first input current and the second input current to the battery input current sharing circuit.

[0012] The battery input current sharing circuit is used to control the battery input current sharing circuit to output a first feedback voltage to the first battery boost circuit and a second feedback voltage to the second battery boost circuit according to the first input current and the second input current; and to control the output voltage of the first battery boost circuit and the second battery boost circuit according to the first feedback voltage and the second feedback voltage, so that the discharge current of the first battery boost circuit and the second battery boost circuit is in a preset current sharing state.

[0013] As an optional implementation, in the first aspect of this utility model, the control circuit further includes an auxiliary power supply circuit, wherein:

[0014] The first power supply terminal of the auxiliary power supply circuit is used to electrically connect to the first battery, the second power supply terminal of the auxiliary power supply circuit is used to electrically connect to the second battery, and the power supply terminal of the auxiliary power supply circuit is electrically connected to the power supply terminal of the synchronous boost control circuit and the power supply terminal of the battery input current sharing circuit.

[0015] The auxiliary power supply circuit is used to provide the power supply voltage to the synchronous boost control circuit when the target battery is the first battery and / or the second battery, under the power supply of the first battery and / or the second battery.

[0016] As an optional implementation, in the first aspect of this utility model, the battery input current sharing circuit includes a buffer module, a first differential amplifier module, a second differential amplifier module, and a voltage divider module, wherein:

[0017] The first current input terminal of the buffer module is electrically connected to the first current output terminal of the synchronous boost control circuit. The second current input terminal of the buffer module is electrically connected to the second current output terminal of the synchronous boost control circuit. The first voltage output terminal of the buffer module is electrically connected to the first voltage input terminal of the voltage divider module and the first voltage input terminal of the first differential amplifier module. The second voltage output terminal of the buffer module is electrically connected to the second voltage input terminal of the voltage divider module and the first voltage input terminal of the second differential amplifier module. The voltage output terminal of the voltage divider module is electrically connected to the second voltage input terminal of the first differential amplifier module and the second voltage input terminal of the second differential amplifier module. The voltage output terminal of the first differential amplifier module is electrically connected to the voltage input terminal of the first battery boost circuit. The voltage output terminal of the second differential amplifier module is electrically connected to the voltage input terminal of the second battery boost circuit. The grounding terminals of the buffer module, the first differential amplifier module, and the second differential amplifier module are all used for grounding.

[0018] As an optional implementation, in the first aspect of this utility model, the buffer module includes a first voltage follower unit and a second voltage follower unit, wherein:

[0019] The current input terminal of the first voltage follower unit is electrically connected to the first current output terminal of the synchronous boost control circuit, and the current input terminal of the second voltage follower unit is electrically connected to the second current output terminal of the synchronous boost control circuit. The voltage output terminal of the first voltage follower unit is electrically connected to the first voltage input terminal of the voltage divider module and the first voltage input terminal of the first differential amplifier module, respectively. The voltage output terminal of the second voltage follower unit is electrically connected to the second voltage input terminal of the voltage divider module and the first voltage input terminal of the second differential amplifier module, respectively. The grounding terminals of the first voltage follower unit and the second voltage follower unit are both used for grounding.

[0020] The first voltage follower unit is used to output a first input voltage to the first voltage input terminal of the first differential amplifier module and the voltage divider module according to the first input current;

[0021] The second voltage follower unit is used to output a second input voltage to the first voltage input terminal of the second differential amplifier module and the voltage divider module according to the second input current.

[0022] As an optional implementation, in the first aspect of this utility model, the voltage divider module includes a first voltage divider resistor and a second voltage divider resistor, and the resistance value of the first voltage divider resistor is equal to the resistance value of the second voltage divider resistor, wherein:

[0023] One end of the first voltage divider resistor is electrically connected to one end of the second voltage divider resistor, the second voltage input terminal of the first differential amplifier module, and the second voltage input terminal of the second differential amplifier module. The other end of the first voltage divider resistor is electrically connected to the voltage output terminal of the first voltage follower unit, and the other end of the second voltage divider resistor is electrically connected to the voltage output terminal of the second voltage follower unit.

[0024] The voltage divider module is used to divide the first input voltage and the second input voltage according to the voltage divider module, so that the voltage output by the voltage divider module to the second voltage input terminal of the first differential amplifier module and the second voltage input terminal of the second differential amplifier module is equal to the average voltage of the first input voltage and the second input voltage.

[0025] As an optional implementation, in the first aspect of this utility model, a filter module is provided between the voltage output terminal of the first differential amplifier module and the voltage input terminal of the first battery boost circuit, and between the voltage output terminal of the second differential amplifier module and the voltage input terminal of the second battery boost circuit, for filtering the voltage output from the first differential amplifier module to the first battery boost circuit, and for filtering the voltage output from the second differential amplifier module to the second battery boost circuit.

[0026] As an optional implementation, in the first aspect of this utility model, a unidirectional conduction module is provided between the voltage output terminal of the first battery boost circuit and the voltage output terminal of the second battery boost circuit, for controlling the output direction of the voltage output terminals of the first battery boost circuit and the second battery boost circuit.

[0027] As an optional implementation, in the first aspect of this utility model, the unidirectional conduction module includes a diode and a protection module, wherein the anode of the diode is electrically connected to one end of the protection module, and the cathode of the diode is electrically connected to the voltage output terminal of the first battery boost circuit or the voltage output terminal of the second battery boost circuit, wherein:

[0028] When the negative terminal of the diode is electrically connected to the voltage output terminal of the first battery boost circuit, the other end of the protection module is electrically connected to the voltage output terminal of the second battery boost circuit.

[0029] When the negative terminal of the diode is electrically connected to the voltage output terminal of the second battery boost circuit, the other end of the protection module is electrically connected to the voltage output terminal of the first battery boost circuit.

[0030] The second aspect of this utility model discloses a lighting system, which includes a lamp body and a lamp controller, wherein the lamp controller includes the current sharing control circuit of the lamp controller described in any one of the first aspects of this utility model.

[0031] Compared with the prior art, the embodiments of this utility model have the following beneficial effects:

[0032] In this embodiment of the invention, the current sharing control circuit includes a control circuit, a first battery boost circuit, and a second battery boost circuit. The current input terminal of the control circuit is electrically connected to the current output terminals of the first and second battery boost circuits, respectively. The voltage output terminal of the control circuit is electrically connected to the voltage input terminals of the first and second battery boost circuits, respectively. The power supply terminal of the first battery boost circuit is electrically connected to the first battery, and the power supply terminal of the second battery boost circuit is electrically connected to the second battery. The voltage output terminals of the first and second battery boost circuits are electrically connected to the lamp body. The control circuit controls the output voltages of the first and second battery boost circuits based on the received first input current from the first battery boost circuit and the second input current from the second battery boost circuit, so that the first and second input currents are in a preset current sharing state. The output voltage is used to supply power to the lamp body. As can be seen, by providing a parallel connection of battery boost circuits, this utility model can achieve current sharing control of each battery boost circuit and independent control of the power supply voltage of each battery boost circuit. This is beneficial to improving power supply efficiency and circuit stability, supporting the independent operation of dual batteries, and ensuring that the battery lifespan is basically the same through current sharing control of dual batteries. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the current sharing control circuit of a lighting controller disclosed in an embodiment of this utility model;

[0035] Figure 2 This is a schematic diagram of the current sharing control circuit of another lighting controller disclosed in this utility model embodiment;

[0036] Figure 3 This is a schematic diagram of the structure of a synchronous boost control circuit disclosed in an embodiment of this utility model;

[0037] Figure 4 This is a schematic diagram of the structure of an auxiliary power supply circuit disclosed in an embodiment of this utility model;

[0038] Figure 5 This is a schematic diagram of the structure of a battery input current sharing circuit disclosed in an embodiment of this utility model;

[0039] Figure 6 This is a schematic diagram of the structure of a first battery boost circuit and a second battery boost circuit disclosed in an embodiment of this utility model;

[0040] Figure 7 This is a schematic diagram of the structure of a lighting system disclosed in an embodiment of this utility model. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or end 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 ends.

[0043] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0044] This utility model discloses a current sharing control circuit and lighting system for a lighting controller. The control circuit can control the output voltage of the first and second battery boost circuits based on the first input current received from the first battery boost circuit and the second input current received from the second battery boost circuit, thereby ensuring a preset current sharing state between the first and second input currents. The output voltage is used to supply the lighting fixture body. This parallel connection of the battery boost circuits enables current sharing control of each battery boost circuit and independent control of the supply voltage of each battery boost circuit. This improves power supply efficiency and circuit stability, supports independent operation of the two batteries, and ensures consistent battery lifespan through current sharing control. Detailed descriptions follow.

[0045] Example 1

[0046] Please see Figure 1 , Figure 1 This is a schematic diagram of the current sharing control circuit of a lighting controller disclosed in an embodiment of this utility model. Figure 1 The current sharing control circuit of the described lighting controller can be applied to any lighting fixture that requires current sharing control; this embodiment of the invention is not limited thereto. Figure 1 As shown, the current sharing control circuit of the lighting controller includes a control circuit 101, a first battery boost circuit 102, and a second battery boost circuit 103, wherein:

[0047] The current input terminal of the control circuit 101 is electrically connected to the current output terminal of the first battery boost circuit 102 and the current output terminal of the second battery boost circuit 103, respectively. The voltage output terminal of the control circuit 101 is electrically connected to the voltage input terminal of the first battery boost circuit 102 and the voltage input terminal of the second battery boost circuit 103, respectively. The power supply terminal of the first battery boost circuit 102 is used to electrically connect to the first battery, the power supply terminal of the second battery boost circuit 103 is used to electrically connect to the second battery, and the voltage output terminals of the first battery boost circuit 102 and the second battery boost circuit 103 are used to electrically connect to the lamp body.

[0048] The control circuit 101 is used to control the output voltages of the first battery boost circuit 102 and the second battery boost circuit 103 based on the first input current received from the first battery boost circuit 102 and the second input current received from the second battery boost circuit 103, so that the discharge current of the first battery boost circuit 102 and the second battery boost circuit 103 is in a preset current-sharing state, and the output voltage is used to supply the lamp body. Here, the current-sharing state refers to the state in which the two batteries are in discharge equilibrium through the first input current and the second input current.

[0049] In this design, the power supply terminals of the first battery boost circuit 102 and the second battery boost circuit 103 are separate, allowing the first and second batteries to be input separately to their respective battery boost circuits. The voltage output terminals of the first battery boost circuit 102 and the second battery boost circuit 103 are connected together to power the lamp body. This parallel connection of the two boost circuits allows the two batteries to operate at different voltages, and also enables diverse power supply modes, including single-battery and dual-battery operation, thus improving power supply versatility and flexibility.

[0050] It should be noted that this embodiment takes a lamp body with two battery interfaces as an example. When the lamp body to be powered has three battery interfaces, a third battery boost circuit can be connected in parallel in the current sharing control circuit, and so on.

[0051] It is evident that implementation Figure 1The described current sharing control circuit of the lighting controller can accurately control the output voltage of the first battery boost circuit 102 and the second battery boost circuit 103 based on the first input current received from the first battery boost circuit 102 and the second input current received from the second battery boost circuit 103. This ensures that the discharge current of the first battery boost circuit 102 and the second battery boost circuit 103 is in a preset current sharing state, and the output voltage is provided to the lighting body. It can automatically collect the input current of each battery boost circuit to achieve current sharing control, ensuring that the discharge current flowing from the two batteries to the lighting fixture remains consistent. This achieves current sharing, ensuring that the charge levels of the two batteries remain essentially consistent. This improves power supply efficiency and accuracy. Compared to existing technologies that use dual-battery series boosting to maintain consistent discharge current, this solution, through dual-battery parallel boosting, also enables independent control of the power supply voltage of each battery's boosting circuit. This allows for independent operation of both batteries, ensuring normal operation whether a single or dual battery is connected. This enhances circuit stability and supports the simultaneous use of batteries with different rated voltages, expanding the circuit's applicability. Furthermore, the current sharing control of the dual batteries helps maintain consistent battery lifespan.

[0052] In an optional embodiment, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the current sharing control circuit of another lighting controller disclosed in this utility model embodiment, wherein:

[0053] The control circuit 101 includes a synchronous boost control circuit 1011 and a battery input current sharing circuit 1012. The first current input terminal of the synchronous boost control circuit 1011 is electrically connected to the current output terminal of the first battery boost circuit 102. The second current input terminal of the synchronous boost control circuit 1011 is electrically connected to the current output terminal of the second battery boost circuit 103. The first and second current output terminals of the synchronous boost control circuit 1011 are both electrically connected to the current input terminal of the battery input current sharing circuit 1012. The voltage output terminal of the battery input current sharing circuit 1012 is electrically connected to the voltage input terminals of the first battery boost circuit 102 and the second battery boost circuit 103, respectively. The power supply terminal of the synchronous boost control circuit 1011 is used to connect to the power supply voltage of the target battery. The target battery includes at least one of the first battery, the second battery, and other batteries.

[0054] The synchronous boost control circuit 1011 is used to collect the first input current of the first battery boost circuit 102 according to the first current input terminal of the synchronous boost control circuit 1011, and to collect the second input current of the second battery boost circuit 103 according to the second current input terminal of the synchronous boost control circuit 1011; and to direct the first input current and the second input current to the battery input current sharing circuit 1012.

[0055] The battery input current sharing circuit 1012 is used to control the battery input current sharing circuit 1012 to output a first feedback voltage to the first battery boost circuit 102 and a second feedback voltage to the second battery boost circuit 103 according to the first input current and the second input current; and to control the output voltage of the first battery boost circuit 102 and the second battery boost circuit 103 according to the first feedback voltage and the second feedback voltage, so that the discharge current of the first battery boost circuit 102 and the second battery boost circuit 103 is in a preset current sharing state.

[0056] Among them, such as Figure 3 As shown, Figure 3 This is a schematic diagram of a synchronous boost control circuit disclosed in an embodiment of the present invention, wherein... Figure 3 The described synchronous boost control circuit 1011 includes a dual synchronous boost control chip U1 and its peripheral circuitry. Specifically, through the first current input terminal of the dual synchronous boost control chip U1 (e.g., ... Figure 3 The CS1+ and CS1- shown can collect the first input current of the first battery boost circuit 102, and then transmit it through the second current input terminal of the dual synchronous boost control chip U1 (e.g., ...). Figure 3 The CS2+ and CS2- shown can collect the second input current of the second battery boost circuit 103, and output it through the first current output terminal of the dual synchronous boost control chip U1 (e.g., CS2+, CS2-). Figure 3 The IMON1 shown can direct the first input current collected to the battery input current sharing circuit 1012, and through the second current output terminal of the dual synchronous boost control chip U1 (such as...) Figure 3 The IMON2 shown can direct the acquired second input current to the battery input current sharing circuit 1012.

[0057] It is evident that implementation Figure 2The described current sharing control circuit of the lighting controller can also collect the first input current of the first battery boost circuit 102 according to the first current input terminal of the synchronous boost control circuit 1011, and collect the second input current of the second battery boost circuit 103 according to the second current input terminal of the synchronous boost control circuit 1011; and direct the first input current and the second input current to the battery input current sharing circuit 1012; and control the battery input current sharing circuit 1012 to supply current to the first battery boost circuit according to the first input current and the second input current. 102 outputs a first feedback voltage and a second feedback voltage to the second battery boost circuit 103; and controls the output voltage of the first battery boost circuit 102 and the second battery boost circuit 103 according to the first feedback voltage and the second feedback voltage, so that the discharge current of the first battery boost circuit 102 and the second battery boost circuit 103 is in a preset current sharing state. It can accurately regulate the voltage of the two battery boost circuits by controlling the input current of the two battery boost circuits, thereby realizing the current sharing control of the discharge current of the two battery boost circuits, so that the discharge current flowing from the two batteries to the lamp is consistent.

[0058] In this optional embodiment, as an optional implementation method, such as Figure 2 As shown, the control circuit 101 also includes an auxiliary power supply circuit (1013), wherein:

[0059] The first power supply terminal of the auxiliary power supply circuit (1013) is used to electrically connect to the first battery, the second power supply terminal of the auxiliary power supply circuit (1013) is used to electrically connect to the second battery, and the power supply terminal of the auxiliary power supply circuit (1013) is electrically connected to the power supply terminal of the synchronous boost control circuit 1011 and the power supply terminal of the battery input current sharing circuit 1012.

[0060] The auxiliary power supply circuit (1013) is used to provide a power supply voltage to the synchronous boost control circuit 1011 when the target battery is the first battery and / or the second battery, under the power supply of the first battery and / or the second battery.

[0061] For example, such as Figure 4 As shown, Figure 4 This is a schematic diagram of an auxiliary power supply circuit disclosed in an embodiment of the present invention, wherein, Figure 4 The described auxiliary power supply circuit 1013 takes the target battery, including the first battery and the second battery, to which it provides the power supply voltage as an example. Specifically, when the first battery is connected to the first power supply terminal of the auxiliary power supply circuit (1013) (e.g., ... Figure 4When the first battery (BAT1) is connected, the output voltage of the first battery can be processed by the auxiliary power supply circuit (1013) to provide a power supply voltage for the synchronous boost control circuit 1011; when the second battery is connected to the second power supply terminal of the auxiliary power supply circuit (1013) (e.g., BAT1), the output voltage of the first battery can be processed by the auxiliary power supply circuit (1013) to provide a power supply voltage for the synchronous boost control circuit 1011; Figure 4 When BAT2 is shown, the output voltage of the second battery can be processed by the auxiliary power supply circuit (1013) to provide a power supply voltage for the synchronous boost control circuit 1011 (such as BAT2). Figure 4 (Vin and +12V shown); when the first battery is connected to the first power supply terminal of the auxiliary power supply circuit (1013) and the second battery is connected to the second power supply terminal of the auxiliary power supply circuit (1013), the auxiliary power supply circuit (1013) processes the output voltage of the first battery and the output voltage of the second battery to provide power supply voltage for the synchronous boost control circuit 1011.

[0062] As can be seen, this optional implementation can provide a power supply voltage to the synchronous boost control circuit 1011 through the auxiliary power supply circuit (1013) when the target battery is the first battery and / or the second battery. Under the power supply of the first battery and / or the second battery, it can realize the synchronous boost control circuit 1011 of the lamp controller can be powered synchronously. This is beneficial to improve the diversity and flexibility of the power supply path of the lamp power supply. Moreover, the synchronous power supply of the lamp power supply can enable the circuit to start directly when the lamp power supply is connected. This can reduce the occurrence of slow lamp power supply start-up time due to the external power supply of the synchronous boost control circuit 1011, which is beneficial to improve the lamp power supply start-up efficiency and speed, thereby improving the power supply speed and power supply efficiency.

[0063] In this optional embodiment, as another optional implementation, such as Figure 2As shown, the battery input current sharing circuit 1012 includes a buffer module 10121, a first differential amplifier module 10122, a second differential amplifier module 10123, and a voltage divider module 10124. The first current input terminal of the buffer module 10121 is electrically connected to the first current output terminal of the synchronous boost control circuit 1011. The second current input terminal of the buffer module 10121 is electrically connected to the second current output terminal of the synchronous boost control circuit 1011. The first voltage output terminal of the buffer module 10121 is electrically connected to both the first voltage input terminal of the voltage divider module 10124 and the first voltage input terminal of the first differential amplifier module 10122. The second voltage output terminal of the buffer module 10121 is electrically connected to both the first voltage input terminal of the voltage divider module 10124 and the first voltage input terminal of the first differential amplifier module 10122. The second voltage input terminal of module 10124 and the first voltage input terminal of the second differential amplifier module 10123 are connected. The voltage output terminal of the voltage divider module 10124 is electrically connected to the second voltage input terminals of the first differential amplifier module 10122 and the second voltage input terminals of the second differential amplifier module 10123. The voltage output terminal of the first differential amplifier module 10122 is electrically connected to the voltage input terminal of the first battery boost circuit 102. The voltage output terminal of the second differential amplifier module 10123 is electrically connected to the voltage input terminal of the second battery boost circuit 103. The grounding terminals of the buffer module 10121, the first differential amplifier module 10122, and the second differential amplifier module 10123 are all used for grounding. Specifically, as shown... Figure 5 As shown, Figure 5 This is a schematic diagram of a battery input current sharing circuit disclosed in an embodiment of the present invention. The first differential amplifier module 10122 consists of a first differential amplifier U4B and several resistors (such as...). Figure 5 The second differential amplifier module 10123 consists of a second differential amplifier U5B and several resistors (such as R55, R56, R66, and R70 shown). Figure 5 It consists of R57, R58, R67 and R71 shown.

[0064] As can be seen, this optional implementation can buffer the input current of each battery boost circuit through the buffer module of the battery input current sharing circuit to obtain the corresponding voltage output result. Then, through the voltage divider module and the first differential amplifier module and the second differential amplifier module, the voltage output result is divided and differentially amplified to obtain the first feedback voltage and the second feedback voltage. This enables precise control of the first feedback voltage and the second feedback voltage, which are then transmitted to the corresponding battery boost circuit to achieve voltage regulation of the battery boost circuit. The voltage control of the battery input current sharing circuit can improve the accuracy and reliability of voltage regulation of the battery boost circuit, thereby helping to improve the accuracy of current sharing control of the discharge current of the battery boost circuit through the regulated voltage.

[0065] In this optional implementation, optionally, such as Figure 2 As shown, the buffer module 10121 includes a first voltage follower unit 101211 and a second voltage follower unit 101212, wherein:

[0066] The current input terminal of the first voltage follower unit 101211 is electrically connected to the first current output terminal of the synchronous boost control circuit 1011. The current input terminal of the second voltage follower unit 101212 is electrically connected to the second current output terminal of the synchronous boost control circuit 1011. The voltage output terminal of the first voltage follower unit 101211 is electrically connected to the first voltage input terminal of the voltage divider module 10124 and the first voltage input terminal of the first differential amplifier module 10122, respectively. The voltage output terminal of the second voltage follower unit 101212 is electrically connected to the second voltage input terminal of the voltage divider module 10124 and the first voltage input terminal of the first differential amplifier module 10122, respectively. The first voltage input terminal of the second differential amplifier module 10123, the ground terminal of the first voltage follower unit 101211, and the ground terminal of the second voltage follower unit 101212 are all grounded. The first voltage follower unit 101211 is used to output a first input voltage to the first voltage input terminal of the first differential amplifier module 10122 and the voltage divider module 10124 according to the first input current. The second voltage follower unit 101212 is used to output a second input voltage to the first voltage input terminal of the second differential amplifier module 10123 and the voltage divider module 10124 according to the second input current.

[0067] Specifically, such as Figure 5 As shown, the first voltage follower unit 101211 consists of a first voltage follower U4A, a first current sensing resistor R69, and several parallel capacitors (such as...). Figure 5 The second voltage follower unit 101212 consists of a second voltage follower U5A, a second current sensing resistor R68, and several parallel capacitors (such as C74 and C76 shown). Figure 5 It consists of C73 and C75 as shown.

[0068] As can be seen, this optional implementation can also perform voltage following processing on the first input current and the second input current through the first voltage following unit and the second voltage following unit respectively, effectively isolating the influence of the synchronous boost control circuit and the subsequent differential amplifier module, which can protect the differential amplifier module and reduce signal loss.

[0069] In this optional implementation, optionally, such as Figure 5 As shown, the voltage divider module 10124 includes a first voltage divider resistor R60 and a second voltage divider resistor R61, and the resistance values ​​of the first voltage divider resistor R60 and the second voltage divider resistor R61 are equal, wherein:

[0070] One end of the first voltage divider resistor R60 is electrically connected to one end of the second voltage divider resistor R61, the second voltage input terminal of the first differential amplifier module 10122, and the second voltage input terminal of the second differential amplifier module 10123. The other end of the first voltage divider resistor R60 is electrically connected to the voltage output terminal of the first voltage follower unit 101211, and the other end of the second voltage divider resistor R61 is electrically connected to the voltage output terminal of the second voltage follower unit 101212. The voltage divider module 10124 is used to divide the first input voltage and the second input voltage according to the voltage divider module 10124, so that the voltage output by the voltage divider module 10124 to the second voltage input terminal of the first differential amplifier module 10122 and the second voltage input terminal of the second differential amplifier module 10123 is equal to the average voltage of the first input voltage and the second input voltage.

[0071] Specifically, the first input current (e.g.) Figure 5 The voltage of IMON1 shown is processed by the first voltage follower unit 101211 to obtain the first input voltage and the second input current (e.g., ...). Figure 5 The voltage of IMON2 shown is processed by the second voltage follower unit 101212 to obtain the second input voltage. The first input voltage and the second input voltage are input together to the voltage divider module 10124 for voltage division. Since the resistance values ​​of the first voltage divider resistor R60 and the second voltage divider resistor R61 of the voltage divider module 10124 are equal, the voltage at the output terminal of the voltage divider module 10124 (such as...) Figure 5 The ISHARE shown is equal to the average voltage of the first input voltage and the second input voltage, and the current at the output of the voltage divider module 10124 is equal to the average current of the first input current and the second input current. Specifically, taking the input current of the first battery boost circuit 102 as an example, the specific method of current sharing control of the first battery boost circuit 102 and the second battery boost circuit 103 through the battery input current sharing circuit 1012 is as follows: If the first input current IMON1 of the first battery boost circuit 102 is greater than the average current ISHARE, the first input voltage corresponding to the first input current IMON1 is injected into the first feedback voltage FB1 after differential amplification, causing the output voltage Vout to decrease, thereby reducing the first input current IMON1, so that the first input current IMON1 and the second input current IMON2 are in a current sharing state; if the input current IMON1 of the first battery boost circuit 102 is less than the average current ISHARE, it is injected into the first feedback voltage FB1 after differential amplification, causing the output voltage Vout to increase, thereby increasing the first input current IMON1, so that the first input current IMON1 and the second input current IMON2 are in a current sharing state.

[0072] As can be seen, this optional implementation can also achieve the average voltage by setting a voltage divider module to divide the first input voltage and the second input voltage, and then perform differential processing on the first input voltage and the second input voltage and the average voltage to obtain the first feedback voltage and the second feedback voltage, which is beneficial to improving the accuracy and reliability of the control to obtain the first feedback voltage and the second feedback voltage.

[0073] In this optional implementation, optionally, such as Figure 5 As shown, a filter module 10125 is provided between the voltage output terminal of the first differential amplifier module 10122 and the voltage input terminal of the first battery boost circuit 102, and between the voltage output terminal of the second differential amplifier module 10123 and the voltage input terminal of the second battery boost circuit 103. The filter modules are used to filter the voltage output from the first differential amplifier module 10122 to the first battery boost circuit 102, and to filter the voltage output from the second differential amplifier module 10123 to the second battery boost circuit 103.

[0074] Specifically, the voltage output terminal of the first differential amplifier module 10122 (e.g. Figure 5 The first voltage input terminal of the filter module 10125 (shown as Vd1) is electrically connected to the first voltage output terminal of the filter module 10125 (e.g., Vd1). Figure 5 The FB1 shown is electrically connected to the voltage input terminal of the first battery boost circuit 102 and the voltage output terminal of the second differential amplifier module 10123 (as shown). Figure 5 The second voltage input terminal of the filter module 10125 (shown as Vd2) is electrically connected to the second voltage output terminal of the filter module 10125 (e.g., Vd2). Figure 5 The FB2 shown is electrically connected to the voltage input terminal of the second battery boost circuit 103, and the ground terminal of the filter module 10125 is used for grounding. For example, taking R65 = 1MΩ and R55 = 1KΩ as an example, the formula for calculating the voltage output of the first differential amplifier module 10122 is:

[0075] Vd1=(R65 / R55)*(IMON1-ISHARE)=(1M / 10K)*(IMON1-ISHARE)=100*(IM ON1-ISHARE);

[0076] Wherein, Vd1 represents the voltage at the voltage output terminal of the first differential amplifier module 10122, IMON1 represents the voltage at the first voltage input terminal of the first differential amplifier module 10122, and ISHARE represents the voltage at the second voltage input terminal of the first differential amplifier module 10122.

[0077] Specifically, the filtering module 10125 may include a first filtering module and a second filtering module, wherein the first filtering module is composed of a first filtering capacitor C63, a first filtering resistor R62 and a second filtering resistor R64, and the second filtering module is composed of a second filtering capacitor C64, a third filtering resistor R63 and a fourth filtering resistor R65.

[0078] As can be seen, this optional implementation can also reduce the noise generated during the processing of the differential amplifier module by filtering the output voltage of the first differential amplifier module 10122 and the second differential amplifier module 10123, thereby improving the accuracy and stability of the feedback voltage used to input to the corresponding battery boost circuit.

[0079] In another alternative embodiment, such as Figure 6 As shown, Figure 6 This is a schematic diagram of the structure of a first battery boost circuit and a second battery boost circuit disclosed in an embodiment of the present utility model. A one-way conduction module 104 is provided between the voltage output terminal of the first battery boost circuit 102 and the voltage output terminal of the second battery boost circuit 103 to control the output direction of the voltage output terminals of the first battery boost circuit 102 and the second battery boost circuit 103.

[0080] In this optional embodiment, optionally, such as Figure 6 As shown, the unidirectional conduction module 104 includes a diode D1 and a protection module Z. The positive terminal of the diode D1 is electrically connected to one end of the protection module Z, and the negative terminal of the diode D1 is electrically connected to the voltage output terminal of the first battery boost circuit 102 or the voltage output terminal of the second battery boost circuit 103. When the negative terminal of the diode D1 is electrically connected to the voltage output terminal of the first battery boost circuit 102, the other end of the protection module Z is electrically connected to the voltage output terminal of the second battery boost circuit 103. When the negative terminal of the diode D1 is electrically connected to the voltage output terminal of the second battery boost circuit 103, the other end of the protection module Z is electrically connected to the voltage output terminal of the first battery boost circuit 102.

[0081] Optionally, the protection module Z may include resistors, circuit breakers, and other components that can provide equivalent protection; this embodiment of the invention is not limited to these components. Specifically, in conjunction with... Figure 3 , Figure 5 and Figure 6 The first current output terminal of the synchronous boost control circuit 1011 (e.g. Figure 3 and Figure 5 The voltage of IMON1 in the circuit is related to the current output terminal of the first battery boost circuit 102 (e.g., ...). Figure 6 The differential voltage between CS1+ and CS1- shown is proportional to the second current output terminal of the synchronous boost control circuit 1011 (as shown). Figure 3and Figure 5 The voltage of IMON2) and the current output terminal of the second battery boost circuit 103 (such as...) Figure 6 The differential voltage between CS2+ and CS2- is proportional to the voltage shown.

[0082] As can be seen, this optional embodiment can provide a unidirectional conduction module 104 between the first battery boost circuit 102 and the second battery boost circuit 103, so that the voltage output by the first battery boost circuit 102 and the voltage output by the second battery boost circuit 103 can be used together as the power supply voltage to the lamp body. This can achieve precise power supply to the lamp body and help reduce the occurrence of situations where the two batteries charge each other and fail to supply power to the lamp body.

[0083] Combination Figures 1-6 The working principle of the current sharing control circuit of the lamp controller described in this embodiment of the present invention is as follows:

[0084] In this embodiment of the invention, when the first and second batteries are powered on, the auxiliary power supply circuit supplies power to the dual synchronous boost control chip in the synchronous boost control circuit 1011 under the action of the first and second batteries, so that the chip can work normally. Subsequently, the chip receives power through the current acquisition ports in the first battery boost circuit 102 connected to the first battery and the second battery boost circuit 103 connected to the second battery (the current acquisition port of the first battery is as follows: ...). Figure 3 and Figure 6 As shown in CS1+ and CS1+, the current acquisition port of the second battery is as follows: Figure 3 and Figure 6 The CS2+ and CS2- shown above sample the currents of the first and second batteries, respectively, and the sampled first input current of the first battery (e.g., CS2+ and CS2-) is used to sample the currents of the first and second batteries. Figure 3 and Figure 5 The second input current of the second battery (as shown in IMNO1) and the second battery (e.g.) Figure 3 and Figure 5 The output of IMON2 shown is sent to the battery input current sharing circuit 1012, so that the first input current and the second input current are respectively converted into the first feedback voltage (e.g., IMON2) through the current input current sharing circuit. Figure 5 and Figure 6 As shown in FB1) and the second feedback voltage (e.g. Figure 5 and Figure 6As shown in FB2), specifically: the first input current is processed by the current sensing resistor R68 of the first voltage follower unit 101211 and the first voltage follower U4A to obtain the first input voltage; the second input current is processed by the current sensing resistor R69 of the second voltage follower unit 101212 and the second voltage follower U5A to obtain the second input voltage; then the first input voltage and the second input voltage are processed by the voltage divider module 10124 to obtain the average voltage (e.g., FB2). Figure 5 The voltage corresponding to ISHARE shown is used to differentially amplify the first input voltage and the average voltage through the first differential amplifier module 10122 to obtain the first differential voltage (e.g., the voltage corresponding to ISHARE shown). Figure 5 The second differential voltage (e.g., Vd1) is obtained by differential amplification of the second input voltage and the average voltage (ISHARE) via the second differential amplification module 10123. Figure 5 As shown in Vd2), the first differential voltage and the second differential voltage are then input to the filter module 10125 for filtering to obtain the first feedback voltage and the second feedback voltage; the first feedback voltage and the second feedback voltage are then input to the first battery boost circuit 102 and the second battery boost circuit 103 for voltage processing to obtain the output voltage (e.g., Vd2). Figure 6 The output voltage (Vout) is then supplied to the lamp body. It can be seen that this solution, through control circuit 101, accurately controls the output voltages of the first battery boost circuit 102 and the second battery boost circuit 103 based on the first input current received from the first battery boost circuit 102 and the second input current received from the second battery boost circuit 103. This ensures that the discharge currents of the first battery boost circuit 102 and the second battery boost circuit 103 are in a preset current-sharing state, and the output voltage is supplied to the lamp body. It can automatically collect the input current of each battery boost circuit, achieving current-sharing control of each battery boost circuit, keeping the discharge current flowing from the two batteries to the lamp body consistent, thus achieving the effect of current sharing. This allows the charge levels of the two batteries to remain essentially consistent, improving power supply efficiency and accuracy. Compared to existing technologies that use dual-battery series boosting to maintain consistent discharge current, this solution, through dual-battery parallel boosting, also enables independent control of the power supply voltage of each battery's boosting circuit. This allows for independent operation of both batteries, ensuring normal operation whether a single or dual battery is connected, thus improving circuit stability. Furthermore, it supports the simultaneous use of batteries with different rated voltages, expanding the circuit's applicability. Additionally, it facilitates consistent battery lifespan through current sharing control of the two batteries.

[0085] Example 2

[0086] Please see Figure 7 , Figure 7This is a schematic diagram of the structure of a lighting system disclosed in an embodiment of this utility model. Wherein, Figure 7 The described lighting system can be applied to any luminaire requiring current sharing control; this embodiment of the invention is not limited thereto. Figure 7 As shown, the lighting system includes a lamp body 201 and a lamp controller 202, and the lamp controller 202 includes a current sharing control circuit as described in any of the embodiments. It should be noted that for a detailed description of the current sharing control circuit of the lamp controller, please refer to the specific description of the relevant content in Embodiment 1, which will not be repeated in this embodiment.

[0087] As can be seen, implementing this lighting system allows the control circuit 101 to accurately control the output voltages of the first battery boost circuit 102 and the second battery boost circuit 103 based on the first input current received from the first battery boost circuit 102 and the second input current received from the second battery boost circuit 103. This ensures that the discharge currents of the first battery boost circuit 102 and the second battery boost circuit 103 are in a preset current-sharing state, and the output voltage is supplied to the lamp body. The system can automatically collect the input current of each battery boost circuit, achieving current-sharing control of each battery boost circuit, ensuring that the discharge current flowing from the two batteries to the lamp is consistent, thus achieving current sharing. This design achieves a consistent current distribution, ensuring that the charge levels of the two batteries remain largely the same. This improves power supply efficiency and accuracy. Compared to existing technologies that use dual-battery series boosting to maintain consistent discharge current, this solution, through dual-battery parallel boosting, also enables independent control of the power supply voltage of each battery's boosting circuit. This allows for independent operation of both batteries, ensuring normal operation whether a single or dual battery is connected. This enhances circuit stability and supports the simultaneous use of batteries with different rated voltages, expanding the circuit's applicability. Furthermore, the current sharing control of the two batteries helps maintain consistent battery lifespan.

[0088] The foregoing has provided a detailed description of a current sharing control circuit and lighting system for a lamp controller disclosed in the embodiments of this utility model. Specific embodiments have been used to illustrate the principles and implementation methods of this utility model. However, the above preferred embodiments are not intended to limit this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, based on the ideas of this utility model, there will be changes in the specific implementation methods and application scope without departing from the spirit and scope of this utility model. Therefore, the protection scope of this utility model is determined by the scope defined in the claims.

Claims

1. A current sharing control circuit for a luminaire controller, characterized by, The current equalization control circuit comprises a control circuit (101), a first battery boost circuit (102) and a second battery boost circuit (103), wherein: The current input ends of the control circuit (101) are electrically connected to the current output ends of the first battery boost circuit (102) and the second battery boost circuit (103) respectively, the voltage output ends of the control circuit (101) are electrically connected to the voltage input ends of the first battery boost circuit (102) and the second battery boost circuit (103) respectively, the power supply end of the first battery boost circuit (102) is used for electrically connecting a first battery, the power supply end of the second battery boost circuit (103) is used for electrically connecting a second battery, and the voltage output ends of the first battery boost circuit (102) and the second battery boost circuit (103) are used for electrically connecting a lamp body; The control circuit (101) is configured to control output voltages of the first battery boost circuit (102) and the second battery boost circuit (103) according to a first input current received from the first battery boost circuit (102) and a second input current received from the second battery boost circuit (103), so that the discharge currents of the first battery boost circuit (102) and the second battery boost circuit (103) are in a preset current equalization state, and the output voltages are used for providing the lamp body.

2. The current sharing control circuit of a lamp controller of claim 1, wherein, The control circuit (101) comprises a synchronous boost control circuit (1011) and a battery input current equalization circuit (1012), wherein: The first current input end of the synchronous boost control circuit (1011) is electrically connected to the current output end of the first battery boost circuit (102), the second current input end of the synchronous boost control circuit (1011) is electrically connected to the current output end of the second battery boost circuit (103), the first current output end of the synchronous boost control circuit (1011) and the second current output end of the synchronous boost control circuit (1011) are both electrically connected to the current input end of the battery input current equalization circuit (1012), the voltage output end of the battery input current equalization circuit (1012) is electrically connected to the voltage input ends of the first battery boost circuit (102) and the second battery boost circuit (103) respectively, and the power supply end of the synchronous boost control circuit (1011) is used for accessing a supply voltage of a target battery, the target battery comprising at least one of the first battery, the second battery and other batteries; The synchronous boost control circuit (1011) is configured to collect a first input current of the first battery boost circuit (102) according to the first current input end of the synchronous boost control circuit (1011), collect a second input current of the second battery boost circuit (103) according to the second current input end of the synchronous boost control circuit (1011), and flow the first input current and the second input current to the battery input current equalization circuit (1012). The battery input current sharing circuit (1012) is configured to control the battery input current sharing circuit (1012) to output a first feedback voltage to the first battery boost circuit (102) and a second feedback voltage to the second battery boost circuit (103) according to the first input current and the second input current, and control output voltages of the first battery boost circuit (102) and the second battery boost circuit (103) according to the first feedback voltage and the second feedback voltage, so that the discharge currents of the first battery boost circuit (102) and the second battery boost circuit (103) are in a preset current sharing state.

3. The current sharing control circuit of a lamp controller of claim 2, wherein, The control circuit (101) further comprises an auxiliary power supply circuit (1013), and the auxiliary power supply circuit (1013) is configured to provide the supply voltage for the synchronous boost control circuit (1011) when the target battery is the first battery and / or the second battery. A first power supply end of the auxiliary power supply circuit (1013) is configured to be electrically connected with the first battery, a second power supply end of the auxiliary power supply circuit (1013) is configured to be electrically connected with the second battery, and a supply end of the auxiliary power supply circuit (1013) is electrically connected with a power supply end of the synchronous boost control circuit (1011) and a power supply end of the battery input current sharing circuit (1012). The auxiliary power supply circuit (1013) is configured to provide the supply voltage for the synchronous boost control circuit (1011) under the power supply of the first battery and / or the second battery when the target battery is the first battery and / or the second battery.

4. The current sharing control circuit of a lamp controller according to claim 2 or 3, characterized in that The battery input current sharing circuit (1012) comprises a buffer module (10121), a first differential amplification module (10122), a second differential amplification module (10123) and a voltage division module (10124). The first current input end of the buffer module (10121) is electrically connected with the first current output end of the synchronous boost control circuit (1011), the second current input end of the buffer module (10121) is electrically connected with the second current output end of the synchronous boost control circuit (1011), the first voltage output end of the buffer module (10121) is respectively electrically connected with the first voltage input end of the voltage division module (10124) and the first voltage input end of the first differential amplification module (10122), the second voltage output end of the buffer module (10121) is respectively electrically connected with the second voltage input end of the voltage division module (10124) and the first voltage input end of the second differential amplification module (10123), the voltage output end of the voltage division module (10124) is electrically connected with the second voltage input end of the first differential amplification module (10122) and the second voltage input end of the second differential amplification module (10123), the voltage output end of the first differential amplification module (10122) is electrically connected with the voltage input end of the first battery boost circuit (102), the voltage output end of the second differential amplification module (10123) is electrically connected with the voltage input end of the second battery boost circuit (103), and the ground end of the buffer module (10121), the ground end of the first differential amplification module (10122) and the ground end of the second differential amplification module (10123) are all used for grounding.

5. The current sharing control circuit of a lamp controller of claim 4, wherein, The buffer module (10121) comprises a first voltage follower unit (101211) and a second voltage follower unit (101212), wherein: The current input end of the first voltage follower unit (101211) is electrically connected with the first current output end of the synchronous boost control circuit (1011), the current input end of the second voltage follower unit (101212) is electrically connected with the second current output end of the synchronous boost control circuit (1011), the voltage output end of the first voltage follower unit (101211) is respectively electrically connected with the first voltage input end of the voltage division module (10124) and the first voltage input end of the first differential amplification module (10122), the voltage output end of the second voltage follower unit (101212) is respectively electrically connected with the second voltage input end of the voltage division module (10124) and the first voltage input end of the second differential amplification module (10123), and the ground end of the first voltage follower unit (101211) and the ground end of the second voltage follower unit (101212) are both used for grounding; The first voltage follower unit (101211) is configured to output a first input voltage to the first voltage input end of the first differential amplification module (10122) and the voltage division module (10124) according to the first input current. The second voltage follower unit (101212) is configured to output a second input voltage to a first voltage input end of the second differential amplification module (10123) and the voltage dividing module (10124) according to the second input current.

6. The current sharing control circuit of a lamp controller of claim 5, wherein, The voltage dividing module (10124) comprises a first voltage dividing resistor (R60) and a second voltage dividing resistor (R61), and a resistance value of the first voltage dividing resistor (R60) is equal to a resistance value of the second voltage dividing resistor (R61), wherein: One end of the first voltage dividing resistor (R60) is electrically connected to one end of the second voltage dividing resistor (R61), a second voltage input end of the first differential amplification module (10122) and a second voltage input end of the second differential amplification module (10123), the other end of the first voltage dividing resistor (R60) is electrically connected to a voltage output end of the first voltage follower unit (101211), and the other end of the second voltage dividing resistor (R61) is electrically connected to a voltage output end of the second voltage follower unit (101212). The voltage dividing module (10124) is configured to divide the first input voltage and the second input voltage according to the voltage dividing module (10124), so that a voltage output from the voltage dividing module (10124) to the second voltage input end of the first differential amplification module (10122) and the second voltage input end of the second differential amplification module (10123) is equal to an average voltage of the first input voltage and the second input voltage.

7. The current sharing control circuit of a lamp controller of claim 4, wherein, A filter module (10125) is arranged between a voltage output end of the first differential amplification module (10122) and a voltage input end of the first battery boost circuit (102), and between a voltage output end of the second differential amplification module (10123) and a voltage input end of the second battery boost circuit (103), and is configured to filter a voltage output from the first differential amplification module (10122) to the first battery boost circuit (102) and filter a voltage output from the second differential amplification module (10123) to the second battery boost circuit (103).

8. The current sharing control circuit of a lamp controller of any one of claims 1, 2, 3, 5, 6, and 7, wherein, A unidirectional conduction module (104) is arranged between a voltage output end of the first battery boost circuit (102) and a voltage output end of the second battery boost circuit (103), and is configured to control output directions of the voltage output end of the first battery boost circuit (102) and the voltage output end of the second battery boost circuit (103).

9. The current sharing control circuit of a lamp controller of claim 8, wherein, The unidirectional conduction module (104) comprises a diode (D1) and a protection module (Z), wherein a positive electrode of the diode (D1) is electrically connected to one end of the protection module (Z), and a negative electrode of the diode (D1) is electrically connected to the voltage output end of the first battery boost circuit (102) or the voltage output end of the second battery boost circuit (103), wherein: When the negative pole of the diode (D1) is electrically connected to the voltage output end of the first battery boost circuit (102), the other end of the protection module (Z) is electrically connected to the voltage output end of the second battery boost circuit (103); When the negative pole of the diode (D1) is electrically connected to the voltage output end of the second battery boost circuit (103), the other end of the protection module (Z) is electrically connected to the voltage output end of the first battery boost circuit (102).

10. A lighting system comprising a luminaire body and a luminaire controller, characterized in that, The luminaire controller comprises a current sharing control circuit of the luminaire controller as claimed in any of claims 1-9.

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