High-voltage energy storage battery system

Abstract

The utility model relates to a high-voltage energy storage battery system, which comprises a high-voltage battery management unit, a battery pack and a single battery management unit, the single battery management unit comprises a plurality of single battery protection plates, and the plurality of single battery protection plates are connected in series through communication lines. According to the voltage of the battery pack, a considerable number of single battery protection boards are arranged, the single battery protection boards are connected in series through communication lines, and protection and recovery functions of overvoltage, undervoltage, overcurrent, high temperature, low temperature, short circuit and the like are provided for the battery pack in the charging and discharging process.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage battery technical field especially relates to a high pressure energy storage battery system. BACKGROUND

[0002] With the development of lithium battery, the demand of lithium battery for electric vehicles, energy storage system and other products is more and more big. Because the lithium battery characteristic is more active, overvoltage and overcurrent and other abnormal working conditions can cause its permanent damage, can seriously affect the performance and life of lithium battery, usually through lithium ion battery protection device to prevent abnormal working condition from damaging the battery. The existing single lithium battery is usually protected by lithium battery protection board, which is used for charging and discharging protection of single lithium battery, so that the single lithium battery is not discharged, not charged, not overcurrent and output short circuit protection. But the battery energy of the existing single lithium battery is limited, and the terminal voltage is low, so it is necessary to form a plurality of single lithium batteries in series, and the protection board cannot be charged at high voltage, and cannot protect the higher voltage charging. SUMMARY

[0003] The utility model aims at designing a high pressure energy storage battery system to solve the problems in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] Provide a kind of high pressure energy storage battery system, including high voltage battery management unit, battery pack and single battery management unit, the single battery management unit includes multiple single battery protection board, the P+ port of the single battery protection board is connected with the anode of the high voltage battery management unit, the P- port of the single battery protection board is connected with the cathode of the high voltage battery management unit;The B+ port of the single battery protection board is connected with the anode of the battery pack, and the B- port of the single battery protection board is connected with the cathode of the battery pack;Multiple single battery protection board is connected by communication line in series.

[0006] Further, the battery pack includes a plurality of single batteries.

[0007] Further, a temperature sensor is installed on the single battery, and the temperature sensor is connected to the single battery protection board through a shielded wire.

[0008] Further, the single battery management unit includes 5-400 single batteries with a single battery voltage of 1.2V-

[0009] 5V single battery protection board of the single battery.

[0010] Further, the monomer battery protection plate is provided with an RS485 communication interface, and the RS485 communication interfaces of a plurality of monomer battery protection plates are connected in series through communication lines.

[0011] Further, the P+ port and the P- port of the monomer battery protection plate are connected with the positive electrode and the negative electrode of the high-voltage battery management unit through voltage collection lines respectively.

[0012] Compared with the prior art, the utility model has the beneficial effects of:

[0013] The utility model discloses a battery management unit, comprising a high-voltage battery management unit, a plurality of monomer battery protection plates and a plurality of monomer battery management units, wherein the high-voltage battery management unit is connected with the monomer battery management unit through a communication line, and the monomer battery management unit is connected with the monomer battery protection plate through a communication line. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0015] Figure 1 The utility model discloses a work flow chart;

[0016] 1, high-voltage battery management unit;2, monomer battery management unit. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0018] Embodiment: please refer to Figure 1A high-voltage energy storage battery system includes a high-voltage battery management unit 1, a battery pack, and a single battery management unit 2. The high-voltage battery management unit 1 (BMS) is responsible for centralized management and coordination of the entire energy storage power station, ensuring the safe and reliable operation of the battery pack under various operating conditions. The single battery management unit 2 (BMU) is responsible for real-time monitoring and management of single batteries, ensuring the health status of each single battery, achieving internal balancing of the battery pack, preventing overcharging, over-discharging, overheating, and other problems, and ensuring the safety and reliability of the entire battery system. The battery pack includes a plurality of single batteries, and a temperature sensor is installed on each single battery. The temperature sensor is connected to the single battery protection board through a shielded wire. The temperature acquisition line is used to monitor the temperature of the battery monomer or battery pack in real time, ensuring that the battery operates within a safe range and preventing overheating from causing thermal runaway (such as fire or explosion). The single battery management unit 2 includes a plurality of single battery protection boards, and the single battery management unit 2 includes a single battery protection board for 5-400 series single batteries with a single battery voltage of 1.2V-5V. The P+ port of the single battery protection board is connected to the positive electrode of the high-voltage battery management unit 1, and the P- port of the single battery protection board is connected to the negative electrode of the high-voltage battery management unit 1. Further, the P+ port and the P- port of the single battery protection board are connected to the positive electrode and the negative electrode of the high-voltage battery management unit 1 through the voltage acquisition line, respectively. The B+ port of the single battery protection board is connected to the positive electrode of the battery pack, and the B- port of the single battery protection board is connected to the negative electrode of the battery pack. An RS485 communication interface is provided on the single battery protection board, and the RS485 communication interfaces of a plurality of single battery protection boards are connected in series through a communication line. According to the voltage of the battery pack, a certain number of single battery protection boards are set, and the single battery protection boards are connected in series through the communication line. During the charging and discharging process, the battery pack provides overvoltage, undervoltage, overcurrent, high temperature, low temperature, and short circuit protection and recovery functions.

[0019] The working principle of the embodiment is as follows: according to the voltage of the battery pack, a certain number of single battery protection boards are set, the single battery management unit 2 continuously detects the voltage and temperature of the single battery, and transmits information to the high-voltage battery management unit 1. When an abnormality is detected, the single battery protection board cuts off the circuit through the control switch, and automatically or manually resets after returning to the normal range, thereby working.

[0020] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change, and modification of the above embodiments, which does not deviate from the technical solution of the present application, is still within the scope of the present application.

Claims

1. A high pressure energy storage battery system, characterized by: The application relates to a high-voltage battery management unit (1), a battery pack and a single battery management unit (2), wherein the single battery management unit (2) comprises a plurality of single battery protection boards, the P+ port of the single battery protection board is connected with the positive electrode of the high-voltage battery management unit (1), the P- port of the single battery protection board is connected with the negative electrode of the high-voltage battery management unit (1), the B+ port of the single battery protection board is connected with the positive electrode of the battery pack, the B- port of the single battery protection board is connected with the negative electrode of the battery pack, and the plurality of single battery protection boards are connected in series through communication lines.

2. The high-voltage energy storage battery system of claim 1, wherein: The battery pack comprises a plurality of single batteries.

3. The high-voltage energy storage battery system of claim 2, wherein: A temperature sensor is arranged on the single battery and connected with the single battery protection board through a shielding line.

4. The high-voltage energy storage battery system of claim 2, wherein: The single battery management unit (2) comprises 5-400 single battery protection boards of the single battery with a single battery voltage of 1.2-5V.

5. The high-voltage energy storage battery system of claim 1, wherein: An RS485 communication interface is arranged on the single battery protection board, and the RS485 communication interfaces of the plurality of single battery protection boards are connected in series through communication lines.

6. The high-voltage energy storage battery system of claim 1, wherein: The P+ port and the P- port of the single battery protection board are connected with the positive electrode and the negative electrode of the high-voltage battery management unit (1) through voltage acquisition lines respectively.

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