CN218733298U - Power energy storage system - Google Patents
Power energy storage system Download PDFInfo
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- CN218733298U CN218733298U CN202221875023.3U CN202221875023U CN218733298U CN 218733298 U CN218733298 U CN 218733298U CN 202221875023 U CN202221875023 U CN 202221875023U CN 218733298 U CN218733298 U CN 218733298U
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Abstract
The utility model provides a power supply energy storage system, which comprises a voltage stabilization conversion unit for receiving electric energy and converting the electric energy into stable direct current, wherein the output end of the voltage stabilization conversion unit is connected with a high-voltage battery for storing the electric energy, and the high-voltage battery is connected with a load unit through a converter DA-AC; the high-voltage battery passes through diode D4 and is connected with charging circuit's input, charging circuit's output one-level energy storage battery connects for charge for one-level energy storage battery, one-level energy storage battery's output passes through diode D1 and is connected with high-voltage battery for provide supplementary electric energy for high-voltage battery, guarantee that high-voltage battery exports stable electric energy. The utility model discloses can be stable last provide the working electric energy for the load, improve the performance of outdoor electric energy.
Description
Technical Field
The utility model relates to a power energy storage technical field, concretely relates to power energy storage system.
Background
The outdoor power supply is commonly used for supplying power to equipment in occasions such as outings, camping and the like, and is particularly used for epidemic situation prevention and control and outdoor rescue work. The portable, movable, high-power and high-capacity outdoor power supply can be rapidly put into an integrated rescue team to supply power to medical equipment such as a medical trolley, a breathing machine, an electric blanket and the like, so that safe mobile power support is provided for medical personnel and medical equipment, and smooth operation of a hospital is guaranteed. However, the outdoor power source used in the market supplies power by using the storage battery, and when the electric energy in the storage battery is reduced, the supply voltage is unstable, and sufficient power cannot be supplied, so that the equipment cannot normally operate or the operation efficiency is low.
SUMMERY OF THE UTILITY MODEL
In view of this, the to-be-solved problem of the utility model is to provide a power energy storage system, can stably last provide the working electric energy for the load, improve the performance of outdoor electric energy.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a power energy storage system comprises a voltage stabilizing and converting unit for receiving electric energy and converting the electric energy into stable direct current, wherein the output end of the voltage stabilizing and converting unit is connected with a high-voltage battery for storing the electric energy, and the high-voltage battery 1 is connected with a load unit through a converter DA-AC;
the high-voltage battery passes through diode D4 and is connected with charging circuit's input, charging circuit's output one-level energy storage battery connects for charge for one-level energy storage battery, one-level energy storage battery's output passes through diode D1 and is connected with high-voltage battery for provide supplementary electric energy for high-voltage battery, guarantee that high-voltage battery exports stable electric energy.
Further, the charging circuit includes triode Q that collector and diode D4 are connected, triode Q's projecting pole is connected with one-level energy storage battery, triode Q's base electricity is connected with the distribution unit for whether control charging circuit switches on.
Furthermore, the power distribution unit is connected with the base electrode of the triode Q through the optical coupler B.
Further, the diode D4 is electrically connected to the secondary energy storage battery and the tertiary energy storage battery 23 through a charging circuit, and is used for enabling the high-voltage battery to charge the secondary energy storage battery and the tertiary energy storage battery 23 respectively;
and the output ends of the secondary energy storage battery and the tertiary energy storage battery are respectively connected with the input end of the diode D4 and the high-voltage battery through the double-headed switch S, and are used for charging the primary energy storage battery or supplying supplementary electric energy to the high-voltage battery 1.
Furthermore, the power supply voltage of the secondary energy storage battery is greater than the setting of the primary energy storage battery, and the power supply voltage of the tertiary energy storage battery is greater than the setting of the secondary energy storage battery and is used for providing load electric energy with different powers.
Further, the input end of the double-ended switch S is connected with a diode D.
Further, the distribution unit is electrically connected with one-level energy storage battery, second grade energy storage battery 22, tertiary energy storage battery, high-voltage battery and double-end switch S respectively, the distribution unit passes through inductance C1 and gathers load current to control different energy storage batteries and discharge, in order to supply the electric energy for high-voltage battery.
Further, the high-voltage battery is a power battery.
The utility model has the advantages and positive effects that:
through preferably storing the electric energy that steady voltage conversion unit received in the high-voltage battery, high-voltage battery is direct to be connected with the load unit, be used for providing high-voltage electric energy for the load, guarantee that the load can normal operating, after the distribution unit detects that high-voltage battery is full of, control charging circuit switches on, charge for one-level energy storage battery through high-voltage battery, when high-voltage battery supplies power for the load, one-level energy storage battery provides supplementary electric energy for high-voltage battery, make high-voltage battery can stably last provide working electric energy for the load, improve the efficiency and the performance of energy storage system outdoor power supply.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a circuit diagram of the overall structure of a power energy storage system of the present invention;
in the figure: 1. a high voltage battery; 21. a primary energy storage battery; 22. a secondary energy storage battery; 23. and a three-level energy storage battery.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The utility model provides a power energy storage system, as shown in fig. 1, including steady voltage conversion unit, steady voltage conversion unit is used for being connected with the generator, steady voltage conversion unit receives the alternating current of generator output, and has just played the conversion into stably fixed direct current output, steady voltage conversion unit is connected with high voltage battery 1's charging port, in order to charge for high voltage battery 1, preferably, industrial-grade power battery (lithium iron phosphate battery) can be chooseed for use to high voltage battery 1, have longe-lived, charge-discharge multiplying power is big, the security is good, the high temperature nature is good, the element is harmless, advantage with low costs. The high-voltage battery 1 is connected with a load unit, the charge-discharge multiplying power of the high-voltage battery 1 is large, and high voltage can be provided under a huoshi environment so as to be used by a high-power load unit.
Because high voltage battery 1 actually is the lithium cell, when the lithium cell discharge time overlength makes the electric energy of storage diminish, lead to the discharge voltage unstability (voltage reduction) in the lithium cell easily, for guaranteeing the stable power supply of high voltage battery 1, the discharge end of high voltage battery 1 is connected with diode D4, and diode D4's output passes through charging circuit and is connected with one-level energy storage battery 21 to charge for one-level energy storage battery 21. The discharge end of the primary energy storage battery 21 is connected with the charge end of the high-voltage battery 1 through a diode D1, and is used for charging the high-voltage battery 1, so as to ensure the stability of the output voltage of the high-voltage battery 1.
The charging circuit comprises a triode Q with a collector connected with the output end of a diode D4, an emitter of the triode Q is electrically connected with a charging port of the first-level energy storage battery 21, a base of the triode Q is connected with a power distribution unit, and the power distribution unit controls whether the triode Q is conducted (whether the charging circuit is conducted) so as to charge the first-level energy storage battery 21. And when the triode Q and the diode D4 are conducted, the current can only flow in a single direction, so that the electric energy reflux of the primary energy storage battery 21 can be avoided. Preferably, in order to prevent the magnetic fields in the primary energy storage battery 21 and the high-voltage battery 1 from affecting the stability of data transmission of the power distribution unit, and in order to prevent the charging circuit from being conducted by mistake, the power distribution unit is connected with the base of the triode Q through the optical coupler B.
When the energy storage system is used outdoors, the power of different loads is different, for example, the power of the induction cooker is far greater than that of the small fan, and in order to ensure that the high-voltage battery 1 can provide stable and fixed current for the loads with different powers, the diode D4 is also electrically connected with the secondary energy storage battery 22 and the tertiary energy storage battery 23 through the charging circuit respectively, so that the high-voltage battery 1 charges the secondary energy storage battery 22 and the tertiary energy storage battery 23. The power supply ends of the secondary energy storage battery 22 and the tertiary energy storage battery 23 are respectively connected with the input end of the diode D4 and the charging end of the high-voltage battery 1 through the double-headed switch S, and are used for charging the primary energy storage battery 21 or providing supplementary electric energy for the high-voltage battery 1. Preferably, the input end of the double-ended switch S is connected with a diode D, so as to ensure unidirectional current flow between the secondary energy storage battery 22 and the tertiary energy storage battery 23 and the high-voltage battery 1.
And the power supply voltage of the secondary energy storage battery 22 is greater than the power supply voltage of the primary energy storage battery 21, and the power supply voltage of the tertiary energy storage battery 23 is greater than the power supply voltage of the secondary energy storage battery 22. And the power distribution unit controls whether the corresponding charging circuit is conducted or not to charge the energy storage battery of the corresponding grade. When the high-voltage battery 1 supplies power to a high-power load, the three-stage energy storage battery 23 supplies power to the high-voltage battery 1 by the electric energy consumption block in the high-voltage battery 1, and when the high-voltage battery 1 supplies power to a low-power load, the one-stage energy storage battery 21 supplies power to the high-voltage battery 1, so that the high-voltage battery 1 can supply power to the load stably for a long time.
The distribution unit is electrically connected with a first-level energy storage battery 21, a second-level energy storage battery 22, a third-level energy storage battery 23, a high-voltage battery 1 and a double-end switch S respectively, and the distribution unit controls the charge and discharge circuit of the first-level energy storage battery 21, the second-level energy storage battery 22, the third-level energy storage battery 23 and the high-voltage battery 1 by acquiring the electric energy condition in the first-level energy storage battery 21, the second-level energy storage battery 22, the third-level energy storage battery 23 and the high-voltage battery 1.
The output end of the high-voltage battery 1 is connected with a converter DA-AC for converting direct current into alternating current, an inductor C1 is arranged at the output end of the converter DA-AC for collecting output current of the converter DA-AC, a power distribution unit collects power utilization current of a load through the inductor C1 (working voltage of a common load is 220V), the power distribution unit determines power of the load according to the collected current and controls a corresponding double-head switch S to reverse to control an energy storage battery of a corresponding grade to supplement electric energy for the high-voltage battery 1.
The utility model discloses a theory of operation and working process as follows:
the voltage stabilization conversion unit converts the received alternating current into stable direct current and stores the electric energy into the high-voltage battery 1, and after the power distribution unit detects that the high-voltage battery 1 is fully charged, all charging circuits are accurately controlled to be conducted through the optical coupler B so as to simultaneously supply power to the primary energy storage battery 21, the secondary energy storage battery 22 and the tertiary energy storage battery 23.
When the high-voltage battery 1 is connected with an external load, the power distribution unit detects the output current of the converter DA-AC, controls the charging circuit to be not conducted (the optical coupler B is not powered), and controls the double-end switch S to be switched to supplement electric energy for the high-voltage battery 1. If the primary energy storage battery 21 is used for supplying power to the high-voltage battery 1, the power distribution unit controls the double-headed switches S corresponding to the secondary energy storage battery 22 and the tertiary energy storage battery 23 to reverse, so that the secondary energy storage battery 22 and the tertiary energy storage battery 23 supplement electric energy to the primary energy storage battery 21. Similarly, when the high-voltage battery 1 is powered by the three-level energy storage battery 23, the power distribution unit controls the two-level energy storage battery 22 and the one-level energy storage battery 21 to supplement the three-level energy storage battery 23 with electric energy. So as to ensure that the high-voltage battery 1 can stably supply power to the load for a long time.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (8)
1. A power supply energy storage system is characterized by comprising a voltage stabilizing and converting unit for receiving electric energy and converting the electric energy into stable direct current, wherein the output end of the voltage stabilizing and converting unit is connected with a high-voltage battery (1) for storing the electric energy, and the high-voltage battery (1) is connected with a load unit through a DA-AC converter;
high voltage battery (1) is connected with charging circuit's input through diode D4, charging circuit's output is connected with one-level energy storage battery (21) for charge for one-level energy storage battery (21), the output of one-level energy storage battery (21) is connected with high voltage battery (1) through diode D1, is used for providing supplementary electric energy for high voltage battery (1), guarantees that high voltage battery (1) exports stable electric energy.
2. The power supply energy storage system according to claim 1, wherein the charging circuit comprises a triode Q with a collector connected with a diode D4, an emitter of the triode Q is connected with a primary energy storage battery (21), and a base of the triode Q is electrically connected with a power distribution unit for controlling whether the charging circuit is conducted or not.
3. The power supply energy storage system according to claim 2, wherein the power distribution unit is connected with the base of the triode Q through an optocoupler B.
4. An energy storage system of power supply according to claim 1, characterized in that said diode D4 is electrically connected to the secondary energy storage battery (22) and the tertiary energy storage battery (23) through charging circuits for charging the secondary energy storage battery (22) and the tertiary energy storage battery (23) with the high voltage battery (1);
the output ends of the secondary energy storage battery (22) and the tertiary energy storage battery (23) are respectively connected with the input end of the diode D4 and the high-voltage battery (1) through the double-headed switch S, and the output ends of the secondary energy storage battery (22) and the tertiary energy storage battery (23) are used for charging the primary energy storage battery (21) or providing supplementary electric energy for the high-voltage battery (1).
5. A power supply energy storage system according to claim 4, characterized in that said secondary energy storage battery (22) is supplied with a voltage greater than the primary energy storage battery (21) setting, and said tertiary energy storage battery (23) is supplied with a voltage greater than the secondary energy storage battery (22) setting, for supplying load electric energy of different powers.
6. A power supply energy storage system according to claim 4, characterized in that the input end of said double-ended switch S is connected with a diode D.
7. The power supply energy storage system according to claim 2, wherein the power distribution unit is electrically connected with a primary energy storage battery (21), a secondary energy storage battery (22), a tertiary energy storage battery (23), the high-voltage battery (1) and a double-ended switch S respectively, and the power distribution unit collects load current through an inductor C1 to control different energy storage batteries to discharge so as to supplement electric energy to the high-voltage battery (1).
8. An electrical energy storage system according to claim 1, characterized in that said high voltage battery (1) is a power battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221875023.3U CN218733298U (en) | 2022-07-15 | 2022-07-15 | Power energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221875023.3U CN218733298U (en) | 2022-07-15 | 2022-07-15 | Power energy storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218733298U true CN218733298U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221875023.3U Active CN218733298U (en) | 2022-07-15 | 2022-07-15 | Power energy storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218733298U (en) |
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2022
- 2022-07-15 CN CN202221875023.3U patent/CN218733298U/en active Active
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