Battery health state monitoring and evaluating system integrated with battery management system

Abstract

The invention relates to the technical field of battery health state monitoring and evaluation systems, and discloses a battery health state monitoring and evaluation system integrated with a battery management system, which comprises a battery state monitoring unit, and the output end of the battery state monitoring unit is in signal connection with an independent battery detection unit and a battery state analysis unit. And the output end of the independent battery detection unit is in signal connection with a damage feedback unit. According to the battery health state monitoring and evaluating system integrated with the battery management system, signals are transmitted to each independent battery through the battery signal receiving module, after the battery receives the signals through the input module, the battery VIT detection module is used for detection, and when a certain battery in a battery pack breaks down, the battery is monitored. When the battery breaks down, a signal is transmitted to the signal uploading module through the feedback module, and an indicating lamp is lightened through the indicating module, so that the faulty battery can be quickly detected, the complexity caused by troubleshooting one by one is avoided, and the battery maintenance efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery state of health monitoring and evaluation systems, and specifically to a battery state of health monitoring and evaluation system integrating a battery management system. Background Art

[0002] An integrated battery management system is a device for monitoring the state of energy storage batteries. Its main purpose is to intelligently manage and maintain each battery unit to prevent overcharging and over-discharging of the batteries. In order to use the batteries reasonably, the integrated battery management system needs to have a system for monitoring and evaluating the state of health of the batteries.

[0003] In the prior art, an integrated battery management system is usually adopted to monitor battery information. Through algorithms, the remaining capacity and state of health of the batteries are monitored to enable the batteries to operate stably. However, in actual use, the main functions of the integrated battery management system focus on the basic detection and protection of the battery pack. It does not have the functions of state diagnosis and fault troubleshooting. After a certain battery in the battery pack fails, it is impossible to immediately repair and replace the faulty local battery. Fault troubleshooting needs to be carried out one by one, which affects the battery repair efficiency. Therefore, it is necessary to invent a battery state of health monitoring and evaluation system integrating a battery management system to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a battery state of health monitoring and evaluation system integrating a battery management system to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A battery state of health monitoring and evaluation system integrating a battery management system, including a battery state monitoring unit. The output end of the battery state monitoring unit is signal-connected to an independent battery detection unit and a battery state analysis unit. The output end of the independent battery detection unit is signal-connected to a damage feedback unit. The output end of the battery state analysis unit is signal-connected to a battery safety protection unit. The output end of the battery safety protection unit is signal-connected to a battery energy control unit. The output end of the battery energy control unit is signal-connected to a battery information feedback unit.

[0006] Preferably, the battery state monitoring unit includes a signal output module. The output end of the signal output module is signal-connected to a voltage signal receiving module. The output end of the voltage signal receiving module is signal-connected to a current signal receiving module. The output end of the current signal receiving module is signal-connected to a temperature signal receiving module.

[0007] Preferably, the independent battery detection unit includes a battery signal receiving module, the output end of the battery signal receiving module is signal-connected to an input module, the output end of the input module is signal-connected to a battery VIT detection module, and the output end of the battery VIT detection module is signal-connected to a feedback module.

[0008] Preferably, the damage feedback unit includes a signal uploading module, and the output end of the signal uploading module is signal-connected to an indicating module.

[0009] Preferably, the battery state analysis unit includes an aging signal output module, and the output end of the aging signal output module is signal-connected to a remaining power output module.

[0010] Preferably, the battery safety protection unit includes an overcurrent protection module, the output end of the overcurrent protection module is signal-connected to an overcharge protection module, the output end of the overcharge protection module is signal-connected to an overdischarge protection module, and the output end of the overdischarge protection module is signal-connected to an overtemperature protection module.

[0011] Preferably, the battery energy control unit includes a charging control module, the output end of the charging control module is signal-connected to a discharging control module, and the output end of the discharging control module is signal-connected to a power balance module.

[0012] Preferably, the battery information feedback unit includes a battery information display module, the output end of the battery information display module is signal-connected to an information interaction module, and the output end of the information interaction module is signal-connected to a historical information storage module.

[0013] Preferably, the output end of the battery state monitoring unit is signal-connected to a contactor, and the contactor connected to the output end of the battery state monitoring unit is signal-connected to a high-voltage sectionalizing box.

[0014] Preferably, the remaining power of the battery information feedback unit is estimated by using the OCV-SOC method, and the remaining power is constructed by using a piecewise linear model.

[0015] Compared with the prior art, the present invention provides a battery health status monitoring and evaluation system integrating a battery management system, and has the following beneficial effects: 1. The battery health status monitoring and evaluation system of the integrated battery management system, through the set battery status monitoring unit, independent battery detection unit and damage feedback unit, during use, outputs signals to the voltage signal receiving module, current signal receiving module and temperature signal receiving module through the signal output module, and can realize the basic function of detecting the health status inside the integrated battery. Signals are transmitted to each independent battery through the battery signal receiving module. After the battery receives the signal through the input module, the battery VIT detection module is used for detection. When a certain battery inside the battery pack fails, a signal is transmitted to the signal uploading module through the feedback module, and the indicator light is lit through the indicator module, so that the faulty battery can be quickly detected, avoiding the cumbersome process of troubleshooting one by one, and improving the battery repair efficiency.

[0016] 2. The battery health status monitoring and evaluation system of the integrated battery management system, through the set battery safety protection unit, during use, the overcurrent protection module can prevent the battery from overcurrent, the overcharge protection module can monitor and protect the battery during charging, the overdischarge protection module can monitor and protect the battery during discharging, and the overtemperature protection module can monitor the temperature of the battery in real time, improving the safety of the integrated battery during use.

[0017] 3. The battery health status monitoring and evaluation system of the integrated battery management system, through the set battery information feedback unit, during use, the battery information display module can display the real-time information of the battery, facilitating the understanding of the battery life and capacity. The information interaction module can quickly update the battery health status information, and the historical information storage module can store the vertical information of the battery, facilitating the analysis and detection of the battery use, realizing the function of real-time monitoring of the integrated battery status. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings: Figure 1 It is a schematic diagram of the overall system of the present invention; Figure 2 It is a schematic diagram of the battery status monitoring unit of the present invention; Figure 3 It is a schematic diagram of the independent battery detection unit of the present invention; Figure 4 It is a schematic diagram of the damage feedback unit of the present invention; Figure 5Schematic diagram of the battery state analysis unit of the present invention; Figure 6 Schematic diagram of the battery safety protection unit of the present invention; Figure 7 Schematic diagram of the energy control unit of the present invention; Figure 8 Schematic diagram of the battery information feedback unit of the present invention.

[0019] In the figure: 1. Battery state monitoring unit; 11. Signal output module; 12. Voltage signal receiving module; 13. Current signal receiving module; 14. Temperature signal receiving module; 2. Independent battery detection unit; 21. Battery signal receiving module; 22. Input module; 23. Battery VIT detection module; 24. Feedback module; 3. Fault feedback unit; 31. Signal uploading module; 32. Indication module; 4. Battery state analysis unit; 41. Aging signal output module; 42. Remaining power output module; 5. Battery safety protection unit; 51. Overcurrent protection module; 52. Overcharge protection module; 53. Overdischarge protection module; 54. Over-temperature protection module; 6. Battery energy control unit; 61. Charging control module; 62. Discharging control module; 63. Battery charge equalization module; 7. Battery information feedback unit; 71. Battery information display module; 72. Information interaction module; 73. Historical information storage module. Embodiment

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0022] Please refer to Figure 1-8, the present invention provides a technical solution: a battery health status monitoring and evaluation system integrated with a battery management system, including a battery status monitoring unit 1. The output end of the battery status monitoring unit 1 is signal-connected to an independent battery detection unit 2 and a battery status analysis unit 4. The output end of the independent battery detection unit 2 is signal-connected to a damage feedback unit 3. The output end of the battery status analysis unit 4 is signal-connected to a battery safety protection unit 5. The output end of the battery safety protection unit 5 is signal-connected to a battery energy control unit 6. The output end of the battery energy control unit 6 is signal-connected to a battery information feedback unit 7.

[0023] Further, the battery status monitoring unit 1 includes a signal output module 11. The output end of the signal output module 11 is signal-connected to a voltage signal receiving module 12. The output end of the voltage signal receiving module 12 is signal-connected to a current signal receiving module 13. The output end of the current signal receiving module 13 is signal-connected to a temperature signal receiving module 14.

[0024] Further, the independent battery detection unit 2 includes a battery signal receiving module 21. The output end of the battery signal receiving module 21 is signal-connected to an input module 22. The output end of the input module 22 is signal-connected to a battery VIT detection module 23. The output end of the battery VIT detection module 23 is signal-connected to a feedback module 24.

[0025] Further, the damage feedback unit 3 includes a signal uploading module 31. The output end of the signal uploading module 31 is signal-connected to an indicating module 32.

[0026] Further, the battery status analysis unit 4 includes an aging signal output module 41. The output end of the aging signal output module 41 is signal-connected to a remaining battery capacity output module 42.

[0027] Further, the battery safety protection unit 5 includes an overcurrent protection module 51. The output end of the overcurrent protection module 51 is signal-connected to an overcharge protection module 52. The output end of the overcharge protection module 52 is signal-connected to an overdischarge protection module 53. The output end of the overdischarge protection module 53 is signal-connected to an overtemperature protection module 54.

[0028] Further, the battery energy control unit 6 includes a charging control module 61. The output end of the charging control module 61 is signal-connected to a discharging control module 62. The output end of the discharging control module 62 is signal-connected to a battery capacity balancing module 63.

[0029] Further, the battery information feedback unit 7 includes a battery information display module 71. The output end of the battery information display module 71 is signal-connected to an information interaction module 72. The output end of the information interaction module 72 is signal-connected to a historical information storage module 73.

[0030] Further, the output terminal of the battery state monitoring unit 1 is connected to a contactor in a signal manner, and the contactor connected to the output terminal of the battery state monitoring unit 1 is connected to the high-voltage sectional box in a signal manner.

[0031] Further, the remaining power of the battery information feedback unit 7 is estimated by using the OCV-SOC method, and the remaining power is constructed by using a piecewise linear model.

[0032] In the actual operation process, when this device is used, through the set battery state monitoring unit 1, independent battery detection unit 2 and damage feedback unit 3, during the use process, the signal is output to the voltage signal receiving module 12, current signal receiving module 13 and temperature signal receiving module 14 through the signal output module 11, and the basic function of detecting the health state of the integrated battery can be realized. The signal is transmitted to each independent battery through the battery signal receiving module 21. After the battery receives the signal through the input module 22, the battery VIT detection module 23 is used for detection. When a certain battery in the battery pack fails, the signal is transmitted to the signal uploading module 31 through the feedback module 24, and the indicator light is lit through the indicator module 32, so that the faulty battery can be quickly detected, avoiding the tediousness caused by troubleshooting one by one, improving the battery repair efficiency. The overcurrent protection module 51 can prevent the battery from overcurrent, the overshoot protection module 52 can monitor and protect the battery during charging, the over-discharge protection module 53 can monitor and protect the battery during discharging, the over-temperature protection module 54 can monitor the temperature of the battery in real time, improving the safety of the integrated battery during use. The battery information display module 71 can display the real-time information of the battery, facilitating the understanding of the battery life and capacity. The information interaction module 72 can quickly update the health state information of the battery, and the historical information storage module 73 can store the vertical information of the battery, facilitating the analysis and detection of the battery use, realizing the function of real-time monitoring of the integrated battery state.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

Claims

1. A battery health status monitoring and evaluation system integrated with a battery management system, including a battery status monitoring unit (1), characterized in that: The output terminal of the battery status monitoring unit (1) is connected to an independent battery detection unit (2) and a battery status analysis unit (4) through signals. The output terminal of the independent battery detection unit (2) is connected to a damage feedback unit (3) through signals. The output terminal of the battery status analysis unit (4) is connected to a battery safety protection unit (5) through signals. The output terminal of the battery safety protection unit (5) is connected to a battery energy control unit (6) through signals. The output terminal of the battery energy control unit (6) is connected to a battery information feedback unit (7) through signals.

2. The battery health status monitoring and evaluation system of an integrated battery management system according to claim 1, characterized in that: The battery status monitoring unit (1) includes a signal output module (11). The output terminal of the signal output module (11) is connected to a voltage signal receiving module (12) through signals. The output terminal of the voltage signal receiving module (12) is connected to a current signal receiving module (13) through signals. The output terminal of the current signal receiving module (13) is connected to a temperature signal receiving module (14) through signals.

3. The battery health status monitoring and evaluation system of an integrated battery management system according to claim 1, characterized in that: The independent battery detection unit (2) includes a battery signal receiving module (21). The output terminal of the battery signal receiving module (21) is connected to an input module (22) through signals. The output terminal of the input module (22) is connected to a battery VIT detection module (23) through signals. The output terminal of the battery VIT detection module (23) is connected to a feedback module (24) through signals.

4. The battery health status monitoring and evaluation system of an integrated battery management system according to claim 1, characterized in that: The damage feedback unit (3) includes a signal uploading module (31). The output terminal of the signal uploading module (31) is connected to an indication module (32) through signals.

5. The battery health status monitoring and evaluation system of an integrated battery management system according to claim 1, characterized in that: The battery status analysis unit (4) includes an aging signal output module (41). The output terminal of the aging signal output module (41) is connected to a remaining battery capacity output module (42) through signals.

6. The battery health status monitoring and evaluation system of an integrated battery management system according to claim 1, wherein: The battery safety protection unit (5) includes an overcurrent protection module (51). The output terminal of the overcurrent protection module (51) is connected to an overcharge protection module (52) through signals. The output terminal of the overcharge protection module (52) is connected to an overdischarge protection module (53) through signals. The output terminal of the overdischarge protection module (53) is connected to an overtemperature protection module (54) through signals.

7. The battery health status monitoring and evaluation system of an integrated battery management system according to claim 1, characterized in that: The battery energy control unit (6) includes a charging control module (61). The output terminal of the charging control module (61) is connected to a discharging control module (62) through signals. The output terminal of the discharging control module (62) is connected to a battery capacity balancing module (63) through signals.

8. The battery health status monitoring and evaluation system of an integrated battery management system according to claim 1, characterized in that: The battery information feedback unit (7) includes a battery information display module (71). The output terminal of the battery information display module (71) is connected to an information interaction module (72) through signals. The output terminal of the information interaction module (72) is connected to a historical information storage module (73) through signals.

9. The battery health status monitoring and evaluation system of an integrated battery management system according to claim 1, characterized in that: The output terminal of the battery status monitoring unit (1) is connected to a contactor through signals, and the contactor connected to the output terminal of the battery status monitoring unit (1) is connected to a high-voltage sectionalizing box through signals.

10. The battery health status monitoring and evaluation system of an integrated battery management system according to claim 1, wherein: The remaining battery capacity of the battery information feedback unit (7) is estimated by using the OCV-SOC method, and the remaining battery capacity is constructed by using a piecewise linear model.

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