Bidirectional DC-DC power management module for elevator

Abstract

The utility model relates to the technical field, in particular to a bidirectional DC-DC power supply management module for an elevator, which comprises a resistor R1, two ends of the resistor R1 are bridged with a switch K1, one end of the resistor R1 is coupled with a power supply input end VBUS through a protective tube F1, the other end of the resistor R1 is coupled with a power supply pin VBAT through capacitors C1 and C2, two ends of the capacitor C1 are connected with a resistor R2 in parallel, and the resistor R2 is connected with a power supply pin VBAT. Two ends of the capacitor C2 are connected with a resistor R3 and a diode D1 in parallel, two ends of the diode D1 are connected with a switch S1 in parallel, the diode D1 is connected with a diode D2 in series, and two ends of the diode D2 are connected with a switch S2 in parallel; according to the utility model, the simplest boost converter and the simplest buck converter are combined, the switching characteristic of a switching tube and the follow current characteristic of a parasitic diode are fully utilized, the topology of the bidirectional DCDC is greatly simplified, the non-isolation design is adopted, the design of a high-frequency transformer is saved to the maximum extent, and higher efficiency and cost performance can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to DC-DC power management technical field especially relates to a two -way DC-DC power management module for elevator. BACKGROUND

[0002] The majority of DCDC on the market are isolation type, and the topology design difficulty and use cost are very high, and the heat quantity is relatively big under small volume, many still need liquid cooling heat dissipation, and are used in electric vehicle related fields more, and the non-isolation type topology is also relatively complex, and the cost is relatively high, and there is no special and high cost-effective design for elevator field.

[0003] Therefore, the two -way DC-DC power management module for elevator solves the above problems. CONTENT OF UTILITY MODEL

[0004] In view of the deficiency of prior art, the utility model provides a two -way DC-DC power management module for elevator to solve the technical problem of prior art "the majority of DCDC on the market are isolation type, and the topology design difficulty and use cost are very high, and the heat quantity is relatively big under small volume, many still need liquid cooling heat dissipation, and are used in electric vehicle related fields more, and the non-isolation type topology is also relatively complex, and the cost is relatively high, and there is no special and high cost-effective design for elevator field".

[0005] To achieve the above purpose, the utility model realizes by the following technical schemes:

[0006] A two -way DC-DC power management module for elevator, comprising

[0007] Resistance R1, the both ends of resistance R1 are crossed with switch K1, one end of resistance R1 is coupled with power input end V through fuse tube F1 BUS , the other end of resistance R1 is coupled with power pin V BAT Through capacitor C1, C2, the both ends of capacitor C1 are connected with resistance R2, and the both ends of capacitor C2 are connected with resistance R3.

[0008] Diode D1, the both ends of diode D1 are connected with switch S1, diode D1 is connected with diode D2 in series, and the both ends of diode D2 are connected with switch S2.

[0009] Diode D3, diode D3 is connected with diode D4 in series, the both ends of diode D3 are connected with switch S3, and the both ends of diode D4 are connected with switch S4.

[0010] Diode D5, diode D5 is connected with diode D6 in series, the both ends of diode D5 are connected with switch S5, and the both ends of diode D6 are connected with diode S6.

[0011] An inductance L1 is coupled between the diode D5 and the diode D6, and the other end of the inductance L1 is coupled with a capacitor C3 and a resistor R4 respectively, and the resistor R4 is coupled with a power supply pin V through a safety tube F2 BAT The utility model discloses a simple boost (Boost) buck (Buck) converter is combined, and the switching characteristic of switch tube and the freewheeling characteristic of parasitic diode are fully utilized, the topology of bidirectional DCDC is greatly simplified, adopts non-isolated design, and the design of high-frequency transformer is greatly saved, higher efficiency and cost performance can be achieved.

[0012] As a preferred technical scheme of the utility model, the resistor R4 is connected across the switch K2.

[0013] As a preferred technical scheme of the utility model, the diode D1 is connected in parallel with the diode D3, and the diode D2 is connected in parallel with the diode D4.

[0014] As a preferred technical scheme of the utility model, the diode D3 is connected in parallel with the diode D5, and the diode D4 is connected in parallel with the diode D6.

[0015] As a preferred technical scheme of the utility model, the safety tubes F1 and F2 can be disconnected in time when the module fails, and the bus and the battery are protected.

[0016] As a preferred technical scheme of the utility model, the capacitors C1 and C2 are connected in series to improve the voltage resistance, and the resistors R2 and R3 balance the voltage of the capacitors.

[0017] The utility model provides a kind of bidirectional DC-DC power management module for elevator, with following beneficial effects:

[0018] 1, the utility model combines simple boost (Boost) buck (Buck) converter, and the switching characteristic of switch tube and the freewheeling characteristic of parasitic diode are fully utilized, the topology of bidirectional DCDC is greatly simplified, adopts non-isolated design, and the design of high-frequency transformer is greatly saved, higher efficiency and cost performance can be achieved, solve the "most of the products on the market DCDC are isolated, and topology design difficulty and use cost are very high, and heat output is relatively large under small size, and many still need liquid cooling heat dissipation, used in electric vehicle related field more, and non-isolated topology is also relatively complex, cost is higher, there is no special design for elevator field and high cost performance" technical problem;

[0019] 2, the fuse F1 and F2 can be disconnected in time when the module fails, protect the bus and electricity; the current limiting resistor R1, R4 soft start circuit, power on to the energy storage capacitor charging with small current, full K1, K2 switch bypass drop limiting resistor, at the same time in software detection fault can also be disconnected equipment; battery discharge voltage S2, S4, S6 switch work, S1, S3, S5 off, bus voltage charging S1, S3, S5 switch work, S2, S4, S6 off; capacitor C1, C2 using large capacitor series to improve the voltage, R2, R3 on the capacitor voltage balance. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 the circuit diagram of the utility model. DETAILED DESCRIPTION

[0021] In order to make the technical problem, technical scheme and beneficial effect of the utility model to be solved more clear and obvious, the utility model is further described in detail below in combination with drawings and examples.It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0022] Therefore, one feature indicated in the specification will be used to explain one feature of one embodiment of the utility model, and it is not suggested that each embodiment of the utility model must have the explained feature.In addition, it should be noted that the specification describes many features.Although certain features can be combined together to show possible system design, these features can also be used in other combinations which are not explicitly explained.Thus, unless otherwise explained, the explained combination is not intended to limit.

[0023] The principle and structure of the utility model will be described in detail below in combination with drawings and examples:

[0024] Reference Figure 1 A kind of bidirectional DC-DC power management module for elevator, including resistance R1, switch K1 is crossed at both ends of the resistance R1, one end of the resistance R1 is coupled power input end V BUS The other end of the resistance R1 is coupled power pin V BAT, the two ends of the capacitor C1 are connected with the resistance R2, and the two ends of the capacitor C2 are connected with the resistance R3; the two ends of the diode D1 are connected with the switch S1, the diode D1 is connected with the diode D2 in series, the two ends of the diode D2 are connected with the switch S2; the two ends of the diode D3 are connected with the diode D4 in series, the two ends of the diode D3 are connected with the switch S3, the two ends of the diode D4 are connected with the switch S4, when the battery is discharged and boosted, the switches S2, S4 and S6 work, the switches S1, S3 and S5 are turned off, when the bus is charged by being reduced in voltage, the switches S1, S3 and S5 work, and the switches S2, S4 and S6 are turned off;

[0025] The diode D5 is connected with the diode D6 in series, the two ends of the diode D5 are connected with the switch S5, and the two ends of the diode D6 are connected with the diode S6; the inductor L1 is coupled between the diode D5 and the diode D6, the other end of the inductor L1 is coupled with the capacitor C3 and the resistance R4 respectively, and the resistance R4 is coupled with the power pin V BAT The current-limiting resistors R1 and R4 constitute a soft start circuit, when powered on, the energy storage capacitor is charged with a small current, after being fully charged, the switches K1 and K2 bypass the current-limiting resistors, and the equipment can also be disconnected when the software detects a fault.

[0026] The two ends of the resistance R4 are connected with the switch K2.

[0027] The diode D1 is connected with the diode D3 in parallel, and the diode D2 is connected with the diode D4 in parallel.

[0028] The diode D3 is connected with the diode D5 in parallel, and the diode D4 is connected with the diode D6 in parallel.

[0029] The fuses F1 and F2 can be disconnected in time when the module fails, thereby protecting the bus and the battery.

[0030] The capacitors C1 and C2 are connected in series to improve the voltage resistance, and the resistances R2 and R3 balance the voltage of the capacitors.

[0031] Specifically, the fuses F1 and F2 can be disconnected in time when the module fails, thereby protecting the bus and the battery.

[0032] The current-limiting resistors R1 and R4 constitute a soft start circuit, when powered on, the energy storage capacitor is charged with a small current, after being fully charged, the switches K1 and K2 bypass the current-limiting resistors, and the equipment can also be disconnected when the software detects a fault.

[0033] When the battery is discharged and boosted, the switches S2, S4 and S6 work, the switches S1, S3 and S5 are turned off, when the bus is charged by being reduced in voltage, the switches S1, S3 and S5 work, and the switches S2, S4 and S6 are turned off.

[0034] Capacitors C1, C2 adopt large-capacitance series to improve voltage resistance, and R2, R3 balance the voltage of the capacitors.

[0035] The utility model mainly solves the problem of the existing DCDC topology complex, high manufacturing cost, adopts non-isolated mode for elevator scene, selects the simplest buck / boost converter topology, adopts parallel switch tube mode to increase current, reaches performance demand and keeps higher performance price ratio.

[0036] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the utility model, and these modifications or replacements should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A bidirectional DC-DC power management module for an elevator, characterized in that, Comprising A resistor R1, both ends of which are connected with a switch K1, one end of which is coupled with a power input end V through a fuse F1 BUS , the other end of which is coupled with a power pin V through capacitors C1, C2 BAT , both ends of the capacitor C1 are connected with a resistor R2, and both ends of the capacitor C2 are connected with a resistor R3; Diode D1, both ends of which are connected with switch S1, diode D1 is connected with diode D2 in series, both ends of diode D2 are connected with switch S2; Diode D3, diode D3 is connected with diode D4 in series, both ends of diode D3 are connected with switch S3, both ends of diode D4 are connected with switch S4; Diode D5, diode D5 is connected with diode D6 in series, both ends of diode D5 are connected with switch S5, both ends of diode D6 are connected with diode S6; An inductor L1 is coupled between the diode D5 and the diode D6, and the other end of the inductor L1 is coupled with the capacitor C3 and the resistor R4, respectively, and the resistor R4 is coupled with the power supply pin V through the safety tube F2 BAT .

2. A bidirectional DC-DC power management module for an elevator according to claim 1, characterized in that, Both ends of the resistor R4 are connected with switch K2.

3. The bidirectional DC-DC power management module for elevator according to claim 1, characterized in that, The diode D1 is connected with diode D3, and diode D2 is connected with diode D4.

4. The bidirectional DC-DC power management module for elevator of claim 1, wherein, The diode D3 is connected with diode D5, and diode D4 is connected with diode D6.

5. The bidirectional DC-DC power management module for elevator as claimed in claim 1, wherein, The fuse F1 and F2 can be disconnected in time when the module fails, protecting the bus and the battery.

6. The bidirectional DC-DC power management module for elevator of claim 1, wherein, The capacitors C1, C2 are connected in series to improve the voltage resistance, and R2, R3 balance the voltage of the capacitors.

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