Intelligent battery management device

Abstract

The utility model belongs to the technical field of electric control equipment, specifically related to an intelligent battery management and control equipment, including first battery group, energy storage inverter, intelligent management and control module and communication control module, energy storage inverter has the DC input interface and controller interface of interval arrangement, first battery group electric connection is in DC input interface, intelligent management and control module has the signal acquisition unit of electric connection in first battery group and the signal transmission control unit of electric connection in communication control module, signal transmission control unit electric connection is in signal acquisition unit, and signal transmission control unit is electric connection in controller interface through communication control module. The utility model can carry out effective management and control to battery group, guarantees the operation safety of battery group.

Description

Technical Field

[0001] This utility model belongs to the technical field of electrical control equipment, specifically relating to an intelligent battery management device. Background Technology

[0002] Battery management equipment is used to manage and regulate battery operation, typically to ensure normal battery function. However, existing technologies usually require a considerable amount of time after the battery has been running to determine its status, making real-time monitoring impossible. Furthermore, current technologies struggle to transmit signals directly and accurately, lacking measures for direct signal control and ensuring reliable signal transmission. These shortcomings have become significant challenges. Therefore, a novel technological solution is urgently needed to address these issues. Utility Model Content

[0003] The purpose of this invention is to provide an intelligent battery management device that addresses the shortcomings of existing technologies, effectively monitors battery operation, and ensures accurate battery management.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An intelligent battery management device includes a first battery pack, an energy storage inverter, an intelligent management module, and a communication control module. The energy storage inverter has a DC input interface and a controller interface that are spaced apart. The first battery pack is electrically connected to the DC input interface. The intelligent management module has a signal acquisition unit electrically connected to the first battery pack and a signal transmission and control unit electrically connected to the communication control module. The signal transmission and control unit is electrically connected to the signal acquisition unit and is electrically connected to the controller interface through the communication control module.

[0006] As an improvement of the intelligent battery management device described in this utility model, the communication control module includes a first communication bus and a second communication bus arranged in parallel. The first communication bus is electrically connected to the signal transmission and control unit and the controller interface, and the second communication bus is electrically connected to the first communication bus and the controller interface.

[0007] As an improvement of the intelligent battery management device described in this utility model, the intelligent management module has a discharge MOS transistor and a charging MOS transistor. The discharge MOS transistor is electrically connected to the negative terminal of the first battery pack, the charging MOS transistor and the signal transmission and control unit, and the charging MOS transistor is electrically connected to the signal transmission and control unit and the energy storage inverter.

[0008] As an improvement of the intelligent battery management device described in this utility model, the intelligent management module has a pre-charge MOS transistor and a pre-charge resistor. The pre-charge MOS transistor is electrically connected to the negative terminal of the first battery pack, the pre-charge resistor and the signal transmission and control unit, and the pre-charge resistor is electrically connected to the signal transmission and control unit and the energy storage inverter.

[0009] As an improvement of the intelligent battery management device described in this utility model, the intelligent management module has an integrated sensor, and the signal acquisition unit is electrically connected to the first battery pack through the integrated sensor.

[0010] As an improvement of the intelligent battery management device described in this utility model, the battery management device further includes a first DC power supply, which is electrically connected to the first battery pack, the DC input interface and the intelligent management module.

[0011] As an improvement of the intelligent battery management device described in this utility model, the first battery pack, the intelligent management module, the communication control module and the energy storage inverter are sequentially arranged in the chassis.

[0012] As an improvement of the intelligent battery management device described in this utility model, the first battery pack has at least 12 to 18 battery cells connected in series.

[0013] The beneficial effects of this utility model are as follows: This utility model includes a first battery pack, an energy storage inverter, an intelligent management and control module, and a communication control module. The energy storage inverter has a DC input interface and a controller interface arranged separately. The first battery pack is electrically connected to the DC input interface. The energy storage inverter is used to supply power from the battery pack to the load and transmit the battery pack's operating information to the outside. The intelligent management and control module has a signal acquisition unit electrically connected to the first battery pack and a signal transmission and control unit electrically connected to the communication control module. The signal acquisition unit collects the battery pack's operating information in real time, thereby effectively knowing the battery's operating status. The signal transmission and control unit is electrically connected to the signal acquisition unit and is electrically connected to the controller interface of the energy storage inverter through the communication control module. Since the intelligent management and control module and the communication control module are independent, the communication control module can independently control and process the signals transmitted from the intelligent management and control module to the energy storage inverter. This can improve the accuracy of signal transmission, effectively reduce the risk of equipment operation errors, and ensure the accuracy of the battery management and control process. Attached Figure Description

[0014] Figure 1 This is a circuit diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of this utility model.

[0016] The components include: 1. First battery pack; 2. Energy storage inverter; 3. Intelligent management and control module; 4. Communication control module; 5. First DC power supply; 6. Chassis; 21. DC input interface; 22. Controller interface; 31. Signal acquisition unit; 32. Signal transmission and control unit; 33. Integrated sensor; 41. First communication bus; 42. Second communication bus. Detailed Implementation

[0017] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] The following is in conjunction with the appendix Figures 1-2 The present invention will be further described in detail with reference to specific embodiments, but this is not intended to limit the present invention.

[0021] An intelligent battery management device, such as Figures 1-2As shown, the device includes a first battery pack 1, an energy storage inverter 2, an intelligent management and control module 3, and a communication control module 4. The intelligent management and control module 3 is the control motherboard of the device, and the communication control module 4 is the communication board of the device. The energy storage inverter 2 is used to supply power from the battery pack to the load and transmit the battery pack's operating information to the outside. The energy storage inverter 2 has a DC input interface 21 and a controller interface 22 that are separated from each other. The first battery pack 1 is electrically connected to the DC input interface 21. The intelligent management and control module 3 has a signal acquisition unit 31 electrically connected to the first battery pack 1 and a signal transmission and control unit 32 electrically connected to the communication control module 4. The signal transmission and control unit 32 is electrically connected to the signal acquisition unit 31 and is electrically connected to the controller interface 22 through the communication control module 4.

[0022] Specifically, the signal acquisition unit 31 has an AFE chip, and the signal transmission and control unit 32 has a connected MCU processor and an RS485 bus interface chip. The AFE chip is electrically connected to the positive terminal of the first battery pack 1 and the MCU processor, respectively. The AFE chip acquires voltage signals, temperature signals, and other signals from the first battery pack 1. The MCU processor monitors, makes decisions, and protects the safe operation of the first battery pack 1 in real time. The communication control module 4 can acquire voltage, temperature, current, alarm, and fault information collected by the intelligent management module 3. The communication control module 4 integrates mainstream inverter communication protocols. Because the communication control module 4 communicates with the inverter independently of the traditional battery management system (BMS), it greatly reduces the number of times the control motherboard BMS program needs to be modified due to matching with the inverter, preventing erroneous modifications to control logic, protection, and other functions caused by BMS program modifications. Preferably, the MCU processor is a PIC18F67K22.

[0023] Specifically, the communication control module 4 includes a first communication bus 41 and a second communication bus 42 arranged in parallel. The first communication bus 41 is electrically connected to the signal transmission control unit 32 and the controller interface 22, and the second communication bus 42 is electrically connected to the first communication bus 41 and the controller interface 22. The first communication bus 41 can be an RS485 bus, and the second communication bus 42 can be a CAN bus. The first communication bus 41 and the second communication bus 42 can be connected through a protocol converter, which enables the communication control module 4 to transmit signals more flexibly, efficiently, and accurately.

[0024] Specifically, the intelligent control module 3 has a discharge MOSFET and a charging MOSFET. The discharge MOSFET is electrically connected to the negative terminal of the first battery pack 1, the charging MOSFET and the signal transmission and control unit 32, and the charging MOSFET is electrically connected to the signal transmission and control unit 32 and the energy storage inverter 2. This can form a charging and discharging circuit, which can effectively ensure that the energy storage inverter 2 charges the first battery pack 1 normally as needed.

[0025] Specifically, the intelligent control module 3 has a pre-charge MOSFET and a pre-charge resistor. The pre-charge MOSFET is electrically connected to the negative terminal of the first battery pack 1, the pre-charge resistor, and the signal transmission and control unit 32. The pre-charge resistor is electrically connected to the signal transmission and control unit 32 and the energy storage inverter 2. This improves the stability of the energy storage inverter 2 charging the first battery pack 1. Preferably, the discharge MOSFET, the charge MOSFET, and the pre-charge MOSFET can all be MOSFETs of model MDES10N025RH.

[0026] Specifically, the intelligent control module 3 has an integrated sensor 33, and the signal acquisition unit 31 is electrically connected to the first battery pack 1 through the integrated sensor 33. The integrated sensor 33 has multiple detection units arranged in parallel, each electrically connected to the first battery pack 1 and the AFE chip. For example, the integrated sensor 33 has a voltage detection unit and a temperature detection unit. The voltage detection unit has a detection resistor, and the temperature detection unit has a thermistor. With the cooperation of the AFE chip and the MCU processor, it effectively detects alarms such as single-cell overvoltage, single-cell undervoltage, charging overcurrent, discharging overcurrent, high temperature, and low temperature in the first battery pack 1, and effectively protects the first battery pack 1.

[0027] Preferably, the battery management device further includes a first DC power supply 5, which is electrically connected to the first battery pack 1, the DC input interface 21, and the intelligent management module 3. The first DC power supply 5 can provide normal power to the signal acquisition unit 31 and the signal transmission and control unit 32 of the intelligent management module 3, ensuring the normal operation of the device. Furthermore, the first DC power supply 5 can be a regulated power supply with a voltage regulation circuit.

[0028] Preferably, the first battery pack 1, the intelligent management and control module 3, the communication control module 4 and the energy storage inverter 2 are sequentially arranged in the chassis 6. The communication control module 4 is independent of the intelligent management and control module 3 to facilitate the management and control of different modules and more accurate and error-free communication operation.

[0029] Preferably, the first battery pack 1 has at least 12 to 18 battery cells connected in series, and the battery cells can be 3.2V lithium iron phosphate cells with a capacity of 100Ah. Furthermore, multiple sets of the first battery pack 1 connected in parallel can be placed in the chassis 6.

[0030] In this solution, both the energy storage inverter 2 and the intelligent management module 3 are equipped with multiple protection functions, such as overcharge and over-discharge protection, resulting in a high degree of intelligence and ensuring the safe operation of the user's equipment and batteries. This ensures that the batteries operate within a safe operating range and effectively extends their lifespan. The energy storage inverter 2 has bidirectional functionality, capable of both energy conversion and battery charging and discharging. Therefore, the energy storage inverter 2 can flexibly adjust the flow of electricity according to actual needs, providing a stable power supply for households or businesses. Furthermore, it charges during off-peak hours, ensuring the utilization of stored energy during peak hours, further maximizing economic benefits by utilizing excess energy. During operation, electricity is stored from the solar panels in the energy storage inverter 2 into the first battery pack 1 and released to household appliances or the power grid when needed. This capability makes the energy storage inverter 2 crucial in balancing power supply and demand, especially providing more reliable power assurance in situations of insufficient or unstable power.

[0031] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on this utility model are within the protection scope of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. An intelligent battery management device, characterized in that: It includes a first battery pack (1), an energy storage inverter (2), an intelligent management and control module (3) and a communication control module (4). The energy storage inverter (2) has a DC input interface (21) and a controller interface (22) arranged separately. The first battery pack (1) is electrically connected to the DC input interface (21). The intelligent control module (3) has a signal acquisition unit (31) electrically connected to the first battery pack (1) and a signal transmission and control unit (32) electrically connected to the communication control module (4). The signal transmission and control unit (32) is electrically connected to the signal acquisition unit (31) and is electrically connected to the controller interface (22) through the communication control module (4).

2. The intelligent battery management device as described in claim 1, characterized in that: The communication control module (4) includes a first communication bus (41) and a second communication bus (42) arranged in parallel. The first communication bus (41) is electrically connected to the signal transmission control unit (32) and the controller interface (22), and the second communication bus (42) is electrically connected to the first communication bus (41) and the controller interface (22).

3. The intelligent battery management device as described in claim 1 or 2, characterized in that: The intelligent control module (3) has a discharge MOS transistor and a charging MOS transistor. The discharge MOS transistor is electrically connected to the negative terminal of the first battery pack (1), the charging MOS transistor and the signal transmission and control unit (32), and the charging MOS transistor is electrically connected to the signal transmission and control unit (32) and the energy storage inverter (2).

4. The intelligent battery management device as described in claim 3, characterized in that: The intelligent control module (3) has a pre-charge MOS transistor and a pre-charge resistor. The pre-charge MOS transistor is electrically connected to the negative terminal of the first battery pack (1), the pre-charge resistor and the signal transmission and control unit (32). The pre-charge resistor is electrically connected to the signal transmission and control unit (32) and the energy storage inverter (2).

5. The intelligent battery management device as described in claim 1 or 2, characterized in that: The intelligent control module (3) has an integrated sensor (33), and the signal acquisition unit (31) is electrically connected to the first battery pack (1) through the integrated sensor (33).

6. The intelligent battery management device as described in claim 1 or 2, characterized in that: It also includes a first DC power supply (5), which is electrically connected to the first battery pack (1), the DC input interface (21) and the intelligent control module (3).

7. The intelligent battery management device as described in claim 1 or 2, characterized in that: The first battery pack (1), the intelligent management and control module (3), the communication control module (4) and the energy storage inverter (2) are sequentially arranged in the chassis (6).

8. The intelligent battery management device as described in claim 1 or 2, characterized in that: The first battery pack (1) has at least 12 to 18 battery cells connected in series.

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