A split capacity charging type UPS power supply

Abstract

The utility model relates to power supply technical field especially relates to a capacity distribution charging formula UPS power supply, including electronic mainboard, a plurality of batteries, wherein electronic mainboard is provided with A+ pole, A- pole for charging battery and B+ pole, B- pole for battery discharge, battery is provided with battery anode and battery cathode, battery anode is electrically connected with A+ pole, B+ pole respectively, battery cathode is electrically connected with A- pole, B- pole respectively, a plurality of batteries are connected in parallel, and the diode is arranged between battery anode and A+ pole, battery anode and B+ pole, battery cathode and A- pole, battery cathode and B- pole to limit the bidirectional flow of current. The technical effect of the utility model is: by setting diode to limit the bidirectional flow of current, the battery of different capacity and voltage is discharged in turn, avoids the situation that high voltage battery discharges low voltage battery, thereby avoiding the heat generated by the current in the battery to cause the battery failure.

Description

Technical Field

[0001] This utility model relates to the field of power supply technology, and in particular to a capacity-rechargeable UPS power supply. Background Technology

[0002] In current UPS power supplies composed of multiple batteries, individual differences exist between the batteries, resulting in variations in capacity, internal resistance, and voltage. When multiple batteries are connected in parallel, higher-voltage batteries may discharge onto lower-voltage batteries, generating heat within the power supply and potentially causing battery failure. Traditional UPS systems often use relays or MOSFETs for isolation circuits, and some UPS systems experience a 20% increase in failure rate due to circulating current. This solution, however, achieves low-cost, lossless isolation using diodes (such as Schottky diodes). Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a capacity-divided charging UPS power supply for use in UPS power supplies, and to solve the problem of discharge caused by multiple batteries with different capacities in the prior art.

[0004] The solution adopted by this utility model to solve its technical problem is: a capacity-rechargeable UPS power supply, including an electronic motherboard and multiple batteries. The electronic motherboard is provided with A+ and A- poles for charging the batteries and B+ and B- poles for discharging the batteries. Each battery is provided with a positive terminal and a negative terminal. The positive terminal of the battery is electrically connected to the A+ and B+ poles respectively, and the negative terminal of the battery is electrically connected to the A- and B- poles respectively. Multiple batteries are connected in parallel. Diodes are provided between the positive terminal and the A+ pole, the positive terminal and the B+ pole, the negative terminal and the A- pole, and the negative terminal and the B- pole to limit the bidirectional flow of current.

[0005] In the above structure, the anode of the diode between the positive terminal and the A+ terminal of the battery is connected to the A+ terminal and the cathode is connected to the positive terminal of the battery; the anode of the diode between the negative terminal and the A- terminal of the battery is connected to the A- terminal and the cathode is connected to the negative terminal of the battery; the anode of the diode between the positive terminal and the B+ terminal of the battery is connected to the positive terminal of the battery and the cathode is connected to the B+ terminal; and the anode of the diode between the negative terminal and the B- terminal of the battery is connected to the negative terminal of the battery and the cathode is connected to the B- terminal.

[0006] In the above structure, the electronic motherboard is equipped with a rectifier module, which is connected to the A+ and A- poles.

[0007] The above structure also includes a transformer, which is connected to the rectifier module.

[0008] The above structure also includes an inverter, which is connected to the B+ and B- terminals.

[0009] The above structure also includes a transformer, which is connected to the A+ and A- poles.

[0010] The above structure also includes a surge module, which is located between the transformer and the A+ terminal and / or between the transformer and the A- terminal to prevent damage to the battery from sudden current changes.

[0011] The above structure also includes a surge module, which is located between the inverter and the B+ terminal and / or between the inverter and the B- terminal to prevent damage to the battery from sudden current changes.

[0012] In the above structure, the surge module includes a PTC resistor, an NTC resistor, a first switch, a second switch, and a third switch. The PTC resistor and the first switch are connected in series to form a PTC component, and the NTC resistor and the second switch are connected in series to form an NTC component. The PTC component, the NTC component, and the third switch are connected in parallel.

[0013] The above structure also includes a four-position three-way solenoid valve, wherein one of the four-position three-way solenoid valves controls the switching of the first switch, the second of the four-position three-way solenoid valves controls the switching of the second switch, and the third of the four-position three-way solenoid valves controls the switching of the third switch.

[0014] The technical effect of this utility model is that by setting up diodes to limit the bidirectional flow of current, batteries with different capacities and voltages are discharged sequentially, avoiding the situation where high-voltage batteries discharge low-voltage batteries, thereby preventing the current inside the battery from generating heat that could cause battery failure.

[0015] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a circuit diagram showing the connection between the battery and the electronic motherboard of this utility model; Figure 2 This is a diagram showing the connection between the electronic motherboard and the transformer inverter of this utility model. Figure 3 This is a connection diagram of the surge module of this utility model.

[0017] In the diagram: 1. Electronic mainboard; 2. Transformer; 3. Inverter; 4. Battery; 5. PTC resistor; 6. NTC resistor; 7. Third switch; 8. First switch; 9. Second switch. Detailed Implementation

[0018] To make the content of this utility model easier to understand, the present utility model will be further described below with reference to specific embodiments and accompanying drawings.

[0019] It should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer" used herein to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise stated, "a plurality of" means two or more.

[0020] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Referring to the attached drawings, a capacity-rechargeable UPS power supply includes an electronic main board 1 and multiple batteries 4. The electronic main board 1 is provided with A+ and A- terminals for charging the batteries 4 and B+ and B- terminals for discharging the batteries 4. Each battery 4 is provided with a positive terminal and a negative terminal. The positive terminal is electrically connected to the A+ and B+ terminals respectively, and the negative terminal is electrically connected to the A- and B- terminals respectively. Multiple batteries 4 are connected in parallel. Diodes are provided between the positive terminal and the A+ terminal, the positive terminal and the B+ terminal, the negative terminal and the A- terminal, and the negative terminal and the B- terminal to limit the bidirectional flow of current.

[0022] Furthermore, between the positive terminal and the A+ terminal of the battery, the anode of the diode is connected to the A+ terminal and the cathode is connected to the positive terminal of the battery; between the negative terminal and the A- terminal of the battery, the anode of the diode is connected to the A- terminal and the cathode is connected to the negative terminal of the battery; between the positive terminal and the B+ terminal of the battery, the anode of the diode is connected to the positive terminal of the battery and the cathode is connected to the B+ terminal; and between the negative terminal and the B- terminal of the battery, the anode of the diode is connected to the negative terminal of the battery and the cathode is connected to the B- terminal.

[0023] Furthermore, the diode is a Schottky diode with a forward voltage drop ≤0.3V to reduce energy loss in the charging and discharging circuit.

[0024] Furthermore, the electronic motherboard 1 is equipped with a rectifier module, which is connected to the A+ and A- poles.

[0025] Furthermore, it also includes transformer 2, which is connected to the rectifier module.

[0026] Furthermore, it also includes inverter 3, which is connected to the B+ and B- terminals.

[0027] Furthermore, it also includes transformer 2, which is connected to the A+ and A- poles.

[0028] Furthermore, a surge module is also included, which is located between transformer 2 and the A+ pole and / or between transformer 2 and the A- pole to prevent damage to battery 4 from sudden current changes.

[0029] Furthermore, a surge module is also included, which is located between inverter 3 and B+ terminal and / or inverter 3 and B- terminal to prevent sudden current from damaging battery 4.

[0030] Furthermore, the surge module includes a PTC resistor 5, an NTC resistor 6, a first switch 8, a second switch 9, and a third switch 7. PTC resistor 5 and the first switch 8 are connected in series to form a PTC component, and NTC resistor 6 and the second switch 9 are connected in series to form an NTC component. The PTC components, NTC components, and the third switch 7 are connected in parallel. The initial resistance of the NTC resistor is 10Ω, which drops below 1Ω after the current stabilizes. The resistance of the PTC resistor doubles when the temperature exceeds 80℃. Inverter 3 and transformer 2 are both coils, which generate surge current when the load is disconnected or connected.

[0031] Furthermore, it also includes a four-position three-way solenoid valve, wherein one port of the four-position three-way solenoid valve controls the opening and closing of the first switch 8, the second port of the four-position three-way solenoid valve controls the opening and closing of the second switch 9, and the third port of the four-position three-way solenoid valve controls the opening and closing of the third switch 7. When the power is first turned on, the second switch 9 is closed first, the resistance of the NTC resistor 6 decreases as the resistor temperature increases, and the NTC resistor 6 causes the current to gradually increase from a small value. When the current is constant, the third switch 7 is closed, and the second switch 9 is opened. When the power is first turned off, the first switch 8 is closed first, and the third switch 7 is opened. The resistance of the PTC resistor 5 increases as the resistor temperature increases, and the PTC resistor 5 causes the current to gradually decrease from a large value. When the current is constant, the first switch 8 is opened.

[0032] There is a certain relationship between the voltage and the charge of battery 4. As battery 4 discharges, its voltage gradually decreases. When the voltage of the high-voltage battery drops to the voltage of another battery 4, the two batteries 4 can supply power to the load together. As the voltage of these two batteries 4 decreases, more batteries 4 will discharge together after their voltages reach equilibrium, thus enabling the power supply to perform capacity-controlled charging and discharging. Data shows that the temperature difference of the battery pack can be reduced by 15℃.

[0033] This invention uses diodes to limit bidirectional current flow, allowing batteries 4 of different capacities and voltages to discharge sequentially. This prevents the high-voltage battery 4 from discharging into the low-voltage battery, thus avoiding heat generation within the battery 4 that could cause it to malfunction. Specifically, it has the following beneficial effects: 1. This utility model uses diodes to limit bidirectional current flow. The synergistic effect of the diodes in the parallel connection of multiple batteries (such as avoiding circulating current and simplifying control logic) allows batteries 4 with different capacities and voltages to discharge sequentially, avoiding the situation where high-voltage battery 4 discharges to low-voltage battery, thereby preventing the current in battery 4 from generating heat and causing battery 4 to malfunction. 2. This utility model uses a diode to enable unidirectional discharge or charging of the battery. As battery 4 discharges, its voltage gradually decreases. When the voltage of the high-voltage battery drops to the voltage of the other battery 4, both batteries 4 can supply power to the load together. As the voltage of these two batteries 4 decreases, more batteries 4 will also discharge together, thus enabling a capacity-controlled charging and discharging power supply. 3. By incorporating a surge module, this utility model can prevent drastic changes in power supply current and avoid damage to battery 4; 4. This utility model, by setting a four-position three-way solenoid valve, can automatically control the opening and closing of the first switch 8, the second switch 9, and the third switch 7, thus avoiding incorrect sequence of these switches.

[0034] The embodiments described above are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and modifications made by those skilled in the art based on this utility model shall fall within the scope of protection of this utility model.

Claims

1. A UPS power supply with split-capacity charging, characterized in that: The device includes an electronic motherboard and multiple batteries. The electronic motherboard is provided with A+ and A- terminals for charging the batteries and B+ and B- terminals for discharging the batteries. Each battery is provided with a positive terminal and a negative terminal. The positive terminal of the battery is electrically connected to the A+ and B+ terminals, and the negative terminal of the battery is electrically connected to the A- and B- terminals. Multiple batteries are connected in parallel. Diodes are provided between the positive and A+ terminals, the positive and B+ terminals, the negative and A- terminals, and the negative and B- terminals to limit bidirectional current flow.

2. The UPS power supply with capacity-divided charging according to claim 1, characterized in that: The anode of the diode between the positive terminal of the battery and the A+ terminal is connected to the A+ terminal, and the cathode is connected to the positive terminal of the battery. The anode of the diode between the negative terminal of the battery and the A- terminal is connected to the A- terminal, and the cathode is connected to the negative terminal of the battery. The anode of the diode between the positive terminal of the battery and the B+ terminal is connected to the positive terminal of the battery, and the cathode is connected to the B+ terminal. The anode of the diode between the negative terminal of the battery and the B- terminal is connected to the negative terminal of the battery, and the cathode is connected to the B- terminal.

3. The capacity-rechargeable UPS power supply according to claim 1, characterized in that: The electronic motherboard is equipped with a rectifier module, which is connected to the A+ pole and the A- pole.

4. The capacity-rechargeable UPS power supply according to claim 3, characterized in that: It also includes a transformer, which is connected to the rectifier module.

5. The capacity-rechargeable UPS power supply according to claim 1, characterized in that: It also includes an inverter, which is connected to the B+ pole and the B- pole.

6. The capacity-rechargeable UPS power supply according to claim 1, characterized in that: It also includes a transformer, which is connected to the A+ pole and the A- pole.

7. The capacity-rechargeable UPS power supply according to claim 6, characterized in that: It also includes a surge module, which is disposed between the transformer and the A+ terminal and / or between the transformer and the A- terminal to prevent damage to the battery from sudden current surges.

8. The capacity-rechargeable UPS power supply according to claim 5, characterized in that: It also includes a surge module, which is disposed between the inverter and the B+ terminal and / or between the inverter and the B- terminal to prevent damage to the battery from sudden current surges.

9. The capacity-rechargeable UPS power supply according to claim 7 or 8, characterized in that: The surge module includes a PTC resistor, an NTC resistor, a first switch, a second switch, and a third switch. The PTC resistor and the first switch are connected in series to form a PTC component, and the NTC resistor and the second switch are connected in series to form an NTC component. The PTC component, the NTC component, and the third switch are connected in parallel.

10. The capacity-rechargeable UPS power supply according to claim 9, characterized in that: It also includes a four-position three-way solenoid valve, wherein one of the four-position three-way solenoid valves controls the switching of the first switch, the two-way solenoid valve controls the switching of the second switch, and the three-way solenoid valve controls the switching of the third switch.

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