Novel boost emergency power supply

Abstract

The utility model discloses a novel boost emergency power supply, and aims to provide a novel boost emergency power supply capable of prolonging the service life of a battery and the emergency time. The system comprises a plurality of batteries, a voltage conversion and rectification filter circuit, a first voltage stabilizing circuit, a second voltage stabilizing circuit, a battery charging management chip, a boost circuit, a talkback output end and an emergency output end. The output end of the first voltage stabilizing circuit is connected with the talkback output end, the output end of the second voltage stabilizing circuit is connected with the input end of the battery charging management chip, the plurality of batteries are arranged in parallel, the positive electrodes of the plurality of batteries and the input end of the booster circuit are connected with the output end of the battery charging management chip, and the negative electrodes of the plurality of batteries are grounded. The output end of the booster circuit is connected with the emergency output end. The utility model is applied to the technical field of elevator interphone boost emergency power supplies.

Description

TECHNICAL FIELD

[0001] The utility model relates to an emergency power supply, in particular to a novel boosting emergency power supply. BACKGROUND

[0002] At present, the UPS power supply of the intercom of the elevator adopts the design of three battery cores in series connection combined with the protection board, adopts the transformer combined with the step-down IC to convert into the required voltage and then directly charges the battery, and controls the upper and lower limits of the charging through the single-chip microcomputer. The battery group adopts the series connection mode, when the battery core cannot be fully charged due to the internal resistance, the pressure difference, the production manufacturing process, the matching and other reasons, the problem that the emergency cannot be performed or the emergency time is short during the emergency, and at the same time, the battery group is always in the floating charge state, shortens the service life of the battery. SUMMARY

[0003] The utility model solves the technical problem that the prior art is lack of, and provides a novel boosting emergency power supply which can prolong the service life of the battery and the emergency time.

[0004] The utility model adopts the technical scheme: the utility model discloses a plurality of batteries, voltage conversion and rectifier filter circuit, first voltage stabilizing circuit, second voltage stabilizing circuit, battery charging management chip, boosting circuit, talkback output end, emergency output end, voltage conversion and rectifier filter circuit's input is connected with commercial power, first voltage stabilizing circuit's input and second voltage stabilizing circuit's input are connected with voltage conversion and rectifier filter circuit's output, first voltage stabilizing circuit's output is connected with talkback output end, second voltage stabilizing circuit's output is connected with battery charging management chip's input, a plurality of batteries are parallelly arranged, and the anode of a plurality of batteries and the input of boosting circuit are connected with the output of battery charging management chip, the cathode of a plurality of batteries is grounded, the output of boosting circuit is connected with emergency output end.

[0005] Further, the output of the boosting circuit and the output of the first voltage stabilizing circuit are provided with a diode, the anode of the diode is connected with the output of the boosting circuit, and the cathode of the diode is connected with the output of the first voltage stabilizing circuit.

[0006] Further, the model of the battery charging management chip is TP4057.

[0007] Further, the boosting circuit adopts a boosting constant voltage chip with a model of H6922. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is the circuit diagram of the utility model. DETAILED DESCRIPTION

[0009] AsFigure 1 As shown in the embodiment, the utility model includes three batteries E, voltage conversion and rectification filter circuit 1, first voltage stabilizing circuit 2, second voltage stabilizing circuit 3, battery charging management chip 4, boost circuit 5, intercom output end 6, emergency output end 7, the input of voltage conversion and rectification filter circuit 1 is connected with commercial power, the input of first voltage stabilizing circuit 2 and the input of second voltage stabilizing circuit 3 are connected with the output of voltage conversion and rectification filter circuit 1, the output of first voltage stabilizing circuit 2 is connected with intercom output end 6, the output of second voltage stabilizing circuit 3 is connected with the input of battery charging management chip 4, if three batteries E are arranged in parallel, and the positive pole of three batteries E and the input of boost circuit 5 are connected with the output of battery charging management chip 4, the negative pole of three batteries E is grounded GND, the output of boost circuit 5 is connected with emergency output end 7.In the embodiment, the battery pack is changed from series connection to parallel connection, and the difference between the battery cells caused by internal resistance, voltage difference, production manufacturing process and matching problem can be solved.

[0010] In the embodiment, a diode D is arranged between the output of boost circuit 5 and the output of first voltage stabilizing circuit 2, the positive pole of diode D is connected with the output of boost circuit 5, and the negative pole of diode D is connected with the output of first voltage stabilizing circuit 2.

[0011] In the embodiment, the model of battery charging management chip 4 is TP4057. The battery charging management chip 4 with the model of TP4057 becomes the preferred chip for small and medium capacity lithium ion battery charging management with the advantages of wide input voltage range, high performance charging, multiple safety protection characteristics, state indication function and package and peripheral element.

[0012] In the embodiment, boost circuit 5 adopts a boost constant voltage chip with the model of H6922. The boost constant voltage chip with the model of H6922 provides a stable and efficient power management solution in the intercom equipment with the advantages of wide input voltage range, low starting voltage, high efficiency conversion, intelligent mode switching, low power standby, adjustable switching frequency, multiple protection mechanisms and wide application field.

[0013] The working principle of the utility model is as follows: commercial power is rectified and filtered to output two power supplies, one of which is output to the intercom output end after being stabilized to supply power for intercom products and the like, and the other of which is output to the lithium battery management chip after being stabilized to charge the battery. When the battery voltage reaches the set value 4.25V, the charging is stopped, and after the power is cut off, the voltage of the battery is boosted to DC12V by the boost chip to supply power for the emergency end and the intercom end, and the parallel battery pack is boosted to the required voltage by the boost circuit to supply power for the load.

[0014] Because the parallel mode is adopted by the battery, the problem of inconsistent voltage of single battery after series connection does not exist, and the problem that the battery cannot be used in emergency or the emergency time is short due to the series connection of the battery cells can be completely solved.

[0015] Although the embodiments of the utility model are described in actual schemes, but does not constitute the limitation to the utility model meaning, for the person skilled in the art, according to the modification of its implementation scheme and the combination with other schemes in this specification, it is obvious.

Claims

1. A new type of emergency power supply with voltage boost, comprising a number of batteries (E), characterized in that: The novel booster emergency power supply further comprises a voltage conversion and rectification filtering circuit (1), a first voltage stabilizing circuit (2), a second voltage stabilizing circuit (3), a battery charging management chip (4), a voltage boosting circuit (5), an intercom output end (6), and an emergency output end (7); an input end of the voltage conversion and rectification filtering circuit (1) is connected with commercial power; an input end of the first voltage stabilizing circuit (2) and an input end of the second voltage stabilizing circuit (3) are both connected with an output end of the voltage conversion and rectification filtering circuit (1); an output end of the first voltage stabilizing circuit (2) is connected with the intercom output end (6); an output end of the second voltage stabilizing circuit (3) is connected with an input end of the battery charging management chip (4); a plurality of batteries (E) are arranged in parallel, and positive poles of the plurality of batteries (E) and an input end of the voltage boosting circuit (5) are both connected with an output end of the battery charging management chip (4); negative poles of the plurality of batteries (E) are grounded (GND); and an output end of the voltage boosting circuit (5) is connected with the emergency output end (7).

2. The novel boost emergency power supply of claim 1, wherein: A diode (D) is arranged between the output end of the voltage boosting circuit (5) and the output end of the first voltage stabilizing circuit (2); a positive pole of the diode (D) is connected with the output end of the voltage boosting circuit (5); and a negative pole of the diode (D) is connected with the output end of the first voltage stabilizing circuit (2).

3. The novel boost emergency power supply of claim 1, wherein: The battery charging management chip (4) is of a model TP4057.

4. The novel boost emergency power supply of claim 1, wherein: The voltage boosting circuit (5) adopts a voltage boosting constant voltage chip of a model H6922.

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