CN215418300U

CN215418300U - Battery protection balance management system

Info

Publication number: CN215418300U
Application number: CN202121406106.3U
Authority: CN
Inventors: 赵睿忱; 计奔; 张振华; 蹇和达; 冯涛
Original assignee: Jiangsu Zhinengjie Energy Technology Co ltd
Current assignee: Jiangsu Zhinengjie Energy Technology Co ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-01-04
Anticipated expiration: 2031-06-23

Abstract

The utility model provides a battery protection equalization management system which is used for managing a power module, wherein the power module comprises a battery and comprises an MCU (microprogrammed control unit) circuit and an interface thereof, a battery voltage sampling module, an RS-485 module and a temperature sampling module, wherein the MCU circuit and the interface thereof comprise an MCU master control unit, the RS-485 module and the temperature sampling module are both connected with the MCU master control unit, the battery voltage sampling module is used for collecting voltage data of the battery, and the battery voltage sampling module is used for returning the battery voltage data to the MCU master control unit through a VMON interface. The utility model can realize the functions of voltage equalization, charge and discharge integration, overvoltage protection, overcurrent protection, over-temperature protection, emergency stop and turn-off and the like, completes data interaction through a special interface, is suitable for a single battery module system and a multi-cluster distributed battery module system, has adjustable functional parameters and realizes the function of multiple purposes of one system.

Description

Battery protection balance management system

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery protection and equalization management system.

Background

The voltage and the capacity of the single battery are limited, the current electric demand of the electric appliance cannot be met independently, and the electric demand of the electric appliance can be met after the batteries are combined in series and parallel. The single batteries have inconsistent parameters such as battery voltage, internal resistance and capacity after being finished due to production process, raw materials and other reasons, the battery with the minimum capacity is easy to be overcharged and overdischarged during charging and discharging due to individual difference of the batteries after being grouped, and then the battery with the smaller capacity is easy to be damaged and attenuated, so that the capacity of the single battery becomes smaller, the service life of the battery pack is seriously reduced due to vicious circle, and the service life of the battery pack is far shorter than the service life of part of the single batteries, so that the battery pack needs to be subjected to battery equalization management.

In battery management and control, it is often encountered that the relevant parameters are changed due to different applicable environments, and redesign is required, which results in waste of time and resources.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a battery protection balance management system which is suitable for a single battery module system and a multi-cluster distributed battery module system, has adjustable functional parameters and realizes the multi-purpose function of one system.

In order to achieve the above purpose, the utility model provides the following technical scheme: a battery protection balance management system is used for managing a power module, the power module comprises a battery, and comprises an MCU (microprogrammed control unit) circuit and an interface thereof, a battery voltage sampling module, an RS-485 module and a temperature sampling module, the MCU microcontroller circuit and the interface thereof comprise an MCU master control, the RS-485 module and the temperature sampling module are both connected with the MCU master control, the battery voltage sampling module collects the voltage data of the battery, the battery voltage sampling module transmits the battery voltage data back to the MCU master control through the VMON interface, the battery voltage sampling module transmits the current data of the power loop back to the MCU master control through the IMON interface, the battery voltage sampling module is communicated with the MCU master control through the SPI, the battery voltage sampling module receives the MCU master control instruction, and the on/off of the MOSFET in the power circuit is controlled through the functional pin, so that the charging and discharging functions are realized.

Further, in the present invention, the battery voltage sampling module includes a battery data sampling chip AFE, and the model of the battery data sampling chip AFE is ML 5238.

Further, in the present invention, a current sensing resistor is connected in series in the power output loop to the ML5238, and the data is internally amplified to obtain the power loop current.

Furthermore, in the utility model, the MCU master control is externally connected with a mechanical switch, and when the mechanical switch is pressed to cause the signal to be short-circuited to the ground, the MCU master control forces the ML5238 to shut off all power loops, thereby realizing emergency stop protection.

Further, in the utility model, the temperature sampling module performs temperature detection through the NTC resistor, and realizes data single-port integration through the chip selection chip.

Further, in the utility model, the RS-485 module comprises a No. 1 interface and a No. 2 interface, the No. 1 interface is used for interactive communication between battery management systems, the modularized integration can be realized based on a daisy chain type MODBUS protocol, the cluster type function control and data interaction can be realized by adding/deleting related battery management systems according to environmental requirements, and the No. 2 interface is used for communicating with an external background server.

The beneficial effects are that the technical scheme of this application possesses following technological effect: the utility model can realize the functions of voltage equalization, charge and discharge integration, overvoltage protection, overcurrent protection, over-temperature protection, emergency stop and turn-off and the like, completes data interaction through a special interface, is suitable for a single battery module system and a multi-cluster distributed battery module system, has adjustable functional parameters and realizes the function of multiple purposes of one system.

It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of the present disclosure unless such concepts are mutually inconsistent.

The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of the system of the present invention.

FIG. 2 is a circuit diagram of the present invention.

Detailed Description

In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings. In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the utility model. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.

As shown in fig. 1-2, a battery protection equalization management system is used for managing a power module, where the power module includes a battery, and includes an MCU microcontroller circuit and its interface, a battery voltage sampling module, an RS-485 module, and a temperature sampling module, where the battery voltage sampling module includes a battery data sampling chip AFE, the model of the battery data sampling chip AFE is ML5238, each single battery sampling chip AFE (ML5238) can collect voltage data of 16 batteries, and can realize charge/discharge equalization of a single battery cell through a built-in equalization management system, so as to realize cell voltage uniformity in a battery module and improve the cycle life of the module, and in addition, a series current sensing resistor is connected to ML5238 in a power output loop, and the data is internally amplified to obtain a power loop current.

MCU microcontroller circuit and interface include the MCU master control, RS-485 module and temperature sampling module all are connected with the MCU master control, the voltage data of battery voltage sampling module collection battery, battery voltage sampling module passes back battery voltage data for the MCU master control through the VMON interface, battery voltage sampling module gives the MCU master control with power return circuit current data passback through the IMON interface, battery voltage sampling module passes through the SPI communication with the MCU master control, and ML5238 receives MCU master control instruction to MOSFET in the control power return circuit is opened/closed through the function pin, realizes the charge-discharge function.

In this embodiment, the MCU master (Enable _ in _ event signal) is externally connected to a mechanical switch, and when the mechanical switch is pressed to short-circuit the signal to ground, the MCU master forces the ML5238 to turn off all power loops, thereby implementing emergency stop protection.

In this embodiment, the temperature sampling module performs temperature detection through the NTC resistor, can detect 16 paths in total, and realizes data single-port integration through the chip selection chip.

In this embodiment, the RS-485 module includes 485 interfaces No. 1 and 485 interfaces No. 2, 485 interfaces No. 1 is used for the mutual communication between the battery management system, based on daisy chain MODBUS agreement, can realize the modularization integration, adds/deletes relevant battery management system according to the environmental requirement and can realize cluster formula functional control and data interaction, 485 interfaces No. 2 are used for communicating with outside backend server.

In this embodiment, the disclosed system can realize voltage balance, charge and discharge an organic whole, functions such as overvoltage protection, overcurrent protection, excess temperature protection, scram shutoff through front end AFE chip + MCU master control to accomplish data interaction through dedicated interface, applicable in battery cell module system, also can be applicable to many cluster distribution type battery module system, functional parameter is adjustable, realizes the multi-purpose function of a system.

The standard parts used in this document are all commercially available and can be customized according to the descriptions in the specification and the drawings, the specific connection modes of the various parts are all realized by conventional means mature in the prior art, and the control circuit can be realized by simple programming of persons skilled in the art, which belongs to the common general knowledge in the field, so that the detailed explanation of the control modes and the circuit connection is not needed in this application.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. The utility model provides a balanced management system of battery protection for manage power module, power module contains the battery, its characterized in that: including MCU microcontroller circuit and interface, battery voltage sampling module, RS-485 module and temperature sampling module, MCU microcontroller circuit and interface include the MCU master control, RS-485 module and temperature sampling module all are connected with the MCU master control, the voltage data of battery is gathered to battery voltage sampling module, battery voltage sampling module gives the MCU master control with battery voltage data passback through the VMON interface, battery voltage sampling module gives the MCU master control with power return circuit current data passback through the IMON interface, battery voltage sampling module passes through the SPI communication with the MCU master control, battery voltage sampling module receives MCU master control instruction to MOSFET in the control power return circuit opens/close through the function pin, realizes charge-discharge function.

2. The battery protection balance management system according to claim 1, wherein: the battery voltage sampling module comprises a battery data sampling chip AFE, and the model of the battery data sampling chip AFE is ML 5238.

3. The battery protection balance management system according to claim 1, wherein: a current sensing resistor is connected in series in the power output loop to the ML5238, and data are amplified internally to obtain the current of the power loop.

4. The battery protection balance management system according to claim 1, wherein: the MCU master control is externally connected with a mechanical switch, and when the mechanical switch is pressed to enable the signal to be short-circuited to the ground, the MCU master control forces the ML5238 to shut off all power loops, so that emergency stop protection is realized.

5. The battery protection balance management system according to claim 1, wherein: the temperature sampling module carries out temperature detection through the NTC resistor and realizes data single-port integration through the chip selection chip.

6. The battery protection balance management system according to claim 1, wherein: the RS-485 module includes 485 interfaces No. 1 and 485 interfaces No. 2, 485 interfaces No. 1 is used for the mutual communication between the battery management system, based on daisy chain MODBUS agreement, can realize the modularization integration, adds/deletes relevant battery management system according to the environmental requirement and can realize cluster formula function control and data interaction, 485 interfaces No. 2 are used for communicating with outside backend server.