TW202020621A - Lithium ion battery overall safety monitoring system and method thereof wherein the monitoring system includes a battery module, a battery health management system, at least one relay and at least one contactor - Google Patents
Lithium ion battery overall safety monitoring system and method thereof wherein the monitoring system includes a battery module, a battery health management system, at least one relay and at least one contactor Download PDFInfo
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本發明係有關於一種電池成組工藝和電子技術製造領域,尤指一種提供鋰離子電池全方位安全監控系統及其方法。 The invention relates to the field of a battery grouping process and electronic technology manufacturing, in particular to provide a comprehensive safety monitoring system and method for lithium ion batteries.
首先,在新能源動力電源或儲能後備電源領域中,鋰離子電池模組結構是重要的核心部件,特別是在某些領域中(比如:純電動汽車領域),鋰離子電池作為唯一的動力源而尤為重要,因此,鋰離子電池有效的模組結構和全方位的電池健康管理(HBMS),可以從根本上提高動力電源或儲能後備電源的續航里程和使用壽命。 First of all, in the field of new energy power sources or energy storage backup power sources, the structure of lithium-ion battery modules is an important core component, especially in some fields (such as the field of pure electric vehicles), lithium-ion batteries are the only power source. The source is particularly important. Therefore, the effective module structure of the lithium ion battery and the comprehensive battery health management (HBMS) can fundamentally improve the cruising range and service life of the power supply or energy storage backup power supply.
其次,電池模組結構成組方式可以分為兩種:第一種為先並聯後串連的模組方式,根據整車需要鋰離子電池組的容量和電壓,電芯先進行並聯,再進行串聯,電芯並聯後由於內阻(包括模組過程中導體內阻)的差異、散熱不均等因素都會影響並聯後電池迴圈壽命,並聯中的某個單位電池短路時,將造成該並聯電路中的電流非常大,容易引發電池燃燒或爆炸的危險。當然這種危險已通過加熔絲的保護技術避免了。第二種為先串聯後並聯的模組方式,根據整組電池的容量,先進行串聯,比如整組容量的1/3,最後再進行並聯,這樣做的目的就是降低大容量電池組故障概率,這種模組方式對管理系統提出了較高的要求。很多情況下,整組電池的停止充電或停止放電往往是串聯回路中個別電池處於弱勢造成。 Secondly, the battery module structure can be divided into two groups: the first is a module mode that is connected in parallel and then in series. According to the capacity and voltage of the lithium-ion battery pack required by the vehicle, the cells are connected in parallel first In series, due to the difference in internal resistance (including the internal resistance of the conductor in the process of the module) and uneven heat dissipation after the parallel connection of the cells, the battery cycle life after parallel connection will be affected. When a unit battery in parallel is shorted, the parallel circuit will be caused The current in the battery is very large, which can easily cause the battery to burn or explode. Of course, this danger has been avoided by fuse protection technology. The second is a module method that connects in series and then in parallel. According to the capacity of the entire group of batteries, it is connected in series first, such as 1/3 of the entire group of capacity, and then in parallel. The purpose of this is to reduce the probability of failure of large-capacity battery pack This module method puts forward higher requirements to the management system. In many cases, the stop of charging or discharging of the entire set of batteries is often caused by the weakness of individual batteries in the series circuit.
由此可見,凡使用串聯形式的鋰動力電池(或任何其它類型電池)、以及大容量超級電容為動力或輔助動力的場合,在電能的補充或電能釋放過程中,對串聯儲能元件中的任一單體儲能器件實行獨立均衡控制是極其必要的,也是新能源應用領域必須解決的主要技術之一。 It can be seen that where lithium power batteries in series (or any other type of battery) and large-capacity supercapacitors are used as power or auxiliary power, during the supplement or release of electrical energy, the It is extremely necessary for any single energy storage device to implement independent balanced control, and it is also one of the main technologies that must be solved in the field of new energy applications.
再次,不論哪種動力電源的模組結構方式,都需要對電池的運行狀態進行全方位監控,傳統的電池管理系統(Battery Management System,BMS)對電池很難做到全方位監控,同時電池的模組結構也制約動力電源的全方位監控,這是新能源動力電源應用領域的難點之一。 Third, no matter what kind of power supply module structure method, it is necessary to monitor the running state of the battery in an all-round way. It is difficult for the traditional battery management system (BMS) to fully monitor the battery. The module structure also restricts the all-round monitoring of power supply, which is one of the difficulties in the application of new energy power supply.
爰此,為有效解決上述之問題,本發明之主要目的在於提供一種可大幅提高系統安全性之鋰離子電池全方位安全監控系統。 Secondly, in order to effectively solve the above problems, the main purpose of the present invention is to provide a lithium ion battery comprehensive safety monitoring system that can greatly improve the safety of the system.
本發明之次要目的,在於提供一種於放電時仍具有持續供電能力以增加續駛里程之鋰離子電池全方位安全監控系統。 The secondary objective of the present invention is to provide a lithium ion battery comprehensive safety monitoring system that has continuous power supply capability during discharge to increase driving range.
本發明之次要目的,在於提供一種大幅增加鋰離子電池之充電容量之鋰離子電池全方位安全監控系統。 The secondary objective of the present invention is to provide a comprehensive safety monitoring system for lithium ion batteries that greatly increases the charging capacity of the lithium ion batteries.
本發明之次要目的,在於提供一種大幅提高系統安全性之鋰離子電池全方位安全監控方法。 The secondary objective of the present invention is to provide a comprehensive safety monitoring method for lithium ion batteries that greatly improves the safety of the system.
本發明之次要目的,在於提供一種於放電時仍具有持續供電能力以增加續駛里程之鋰離子電池全方位安全監控方法。 The secondary objective of the present invention is to provide a comprehensive safety monitoring method for a lithium ion battery that has continuous power supply capacity during discharge to increase driving range.
本發明之次要目的,在於提供一種大幅增加鋰離子電池之充電容量之鋰離子電池全方位安全監控方法。 The secondary objective of the present invention is to provide a comprehensive safety monitoring method for lithium ion batteries that greatly increases the charging capacity of lithium ion batteries.
為達上述目的,本發明係提供一種鋰離子電池全方位安全監 控系統,係包括一電池模組、一電池健康管理系統、至少一繼電器及至少一接觸器,該電池模組由複數單體電池以串聯方式所組成,該電池模組係用以產生一動力電源,該電池健康管理系統具有一資料獲取單元及一資料處理單元,該電池健康管理系統藉由該資料獲取單元取得所述每一單體電池之複數筆資料並透過該資料處理單元進行處理,該繼電器用以控制所述電池模組之電壓平衡,以避免該電池模組之間的壓差問題,該接觸器設置於所述單體電池之間並與所述繼電器相連接,所述電池模組係透過控制該接觸器間的閉合以連接或斷開所述繼電器。 To achieve the above objectives, the present invention provides a comprehensive safety monitoring system for lithium-ion batteries The control system includes a battery module, a battery health management system, at least one relay and at least one contactor, the battery module is composed of a plurality of single cells in series, the battery module is used to generate a power Power supply, the battery health management system has a data acquisition unit and a data processing unit, the battery health management system obtains a plurality of pieces of data of each unit battery through the data acquisition unit and processes through the data processing unit, The relay is used to control the voltage balance of the battery modules to avoid the pressure difference between the battery modules. The contactor is arranged between the single cells and connected to the relay. The battery The module connects or disconnects the relay by controlling the closing between the contactors.
為達上述目的,本發明係提供一種鋰離子電池全方位安全監控方法,係包括以下步驟:提供一電池健康管理系統具有一資料處理單元用以發送一監測指令;對一電池模組所產生之複數筆資料進行全方位監控;將已監控之資料傳送至一感測單元,並判斷資料是否異常;若所述資料被判斷為異常時,透過該電池健康管理系統以判斷是否需要報警;若被判斷需報警,該健康電池管理系統係根據所述資料產生一警示訊號,並將所述警示訊號發送給所述資料處理單元;所述資料處理單元根據所述警示訊號產生警示以提示或控制所述電池模組停止供電,結束本輪控制流程。 To achieve the above objective, the present invention provides a comprehensive safety monitoring method for lithium-ion batteries, which includes the following steps: providing a battery health management system with a data processing unit for sending a monitoring command; Comprehensive monitoring of multiple data; send the monitored data to a sensing unit and judge whether the data is abnormal; if the data is judged to be abnormal, use the battery health management system to judge whether an alarm is required; if it is If it is judged that an alarm is needed, the health battery management system generates a warning signal according to the data and sends the warning signal to the data processing unit; the data processing unit generates a warning according to the warning signal to prompt or control the The battery module stops supplying power and ends the current control flow.
透過本發明的結構設計,藉由所述電池健康管理系統的控制,進以實現整個系統的高電壓安全解除,達到於危險環境下電池無害化處理,並於電池健康管理系統的監控下,各項資料完全正常以建立整個高 壓系統,並藉由該繼電器陣列的控制形成所述電池模組的電壓平衡,避免於串聯情況下整個電池模組之間的壓差問題,最後控制每個電池模組之間的接觸器閉合後以斷開繼電器,從而完成高壓系統的建立,即為一鋰離子電池全方位安全監控系統之串聯結構,當遇到危險環境時,如電池模組進水、車禍等環境下,所述接觸器會自動斷開,實現整個系統的高電壓接觸,不會造成無法斷開高壓電源的危險狀態。 Through the structural design of the present invention, through the control of the battery health management system, the high voltage of the entire system can be safely released to achieve the harmless treatment of the battery in a hazardous environment, and under the monitoring of the battery health management system, each Item data is completely normal to create the entire high Voltage system, and the voltage balance of the battery modules is formed by the control of the relay array to avoid the pressure difference between the entire battery modules in the case of series connection, and finally the contactor between each battery module is controlled to close Then, the relay is disconnected to complete the establishment of the high-voltage system, which is a series structure of a comprehensive monitoring system for a lithium-ion battery. When encountering a dangerous environment, such as water in the battery module, car accident, etc., the contact The device will automatically disconnect to realize the high voltage contact of the entire system, and will not cause a dangerous state that the high voltage power supply cannot be disconnected.
如上所述的鋰離子電池全方位安全監控系統,透過所述電池健康管理系統(HBMS)的控制,方便的全方位監控每一個單體鋰電池的狀態,能夠通過監控鋰離子電池狀態,控制繼電器陣列的開關,實現整個系統的單體電池均衡,均衡方式分為靜置自然均衡、能量轉移均衡、被動均衡三種模式。當系統監測到每個電池模組內相同位置的單體電池出現個別少數電壓不一致時,採用靜置自然均衡;當系統檢測到每個電池模組內不同位置的單體電池出現少數電壓不一致時,採用能量轉移均衡;當整個動力電源的絕大多數單體電池電壓均低於某些單體電池電壓時,需要對這些電池進行被動均衡,使其電壓與絕大部分電池保持一致,從而解決電池電壓的一致性問題。 The lithium ion battery comprehensive safety monitoring system as described above, through the control of the battery health management system (HBMS), can conveniently monitor the status of each single lithium battery in an all-round way, and can control the relay by monitoring the status of the lithium ion battery The switch of the array realizes the single cell balance of the entire system. The balance mode is divided into three modes: static natural balance, energy transfer balance, and passive balance. When the system detects that there are a few individual voltage inconsistencies in the battery cells at the same position in each battery module, static equilibrium is used; when the system detects a few voltage inconsistencies in the battery cells at different positions in each battery module , Adopt energy transfer equalization; when the voltage of the majority of single cells of the entire power supply is lower than the voltage of some single cells, these cells need to be passively balanced to make their voltages consistent with most of the batteries, so as to solve The consistency of battery voltage.
2‧‧‧電池模組 2‧‧‧ battery module
3‧‧‧電池健康管理系統 3‧‧‧Battery health management system
4‧‧‧繼電器 4‧‧‧Relay
5‧‧‧接觸器 5‧‧‧Contactor
14‧‧‧均衡控制模組 14‧‧‧Equalization control module
A1、B1、A2、B2‧‧‧基本串聯分支 A1, B1, A2, B2
S801~S810‧‧‧步驟 S801~S810‧‧‧Step
第1圖係為本發明之結構圖;第2圖係為本發明之串聯及並聯結構圖;第3圖係為本發明之串聯及並聯均衡結構圖;第3圖係為本發明之系統啟動瞬間繼電器陣列電氣圖; 第5圖係為本發明之流程圖。 Figure 1 is a structural diagram of the present invention; Figure 2 is a series and parallel structure diagram of the present invention; Figure 3 is a series and parallel equilibrium structure diagram of the present invention; Figure 3 is a system startup of the present invention Electrical diagram of instant relay array; Figure 5 is a flowchart of the present invention.
本發明之上述目的及其結構與功能上的特性,將依據所附圖式之較佳實施例予以說明。 The above objects, structural and functional characteristics of the present invention will be described based on the preferred embodiments of the accompanying drawings.
請參閱第1、2圖,係為本發明鋰離子電池全方位安全監控系統之結構圖及串、並聯結構圖,如圖所示,一種鋰離子電池全方位安全監控系統,係包括一電池模組、一電池健康管理系統、至少一繼電器及至少一接觸器,該電池模組由複數單體電池以串聯方式所組成,該電池模組係用以產生一動力電源,尤須說明的是,所述單體電池係為單體鋰離子電池;該電池健康管理系統具有一資料獲取單元及一資料處理單元,該電池健康管理系統藉由該資料獲取單元取得所述每一單體電池之複數筆資料並透過該資料處理單元進行處理,所述電池健康管理系統係用以即時監控所述每一單體電池之不同位置之電壓及溫度及總電流及總電壓等資料,另外,所述電池健康管理系統更具有一感測單元及一警示單元,該感測單元用以感測並分析所述電池模組是否故障,並透過該警示單元產生一警示訊號;該繼電器用以控制所述電池模組之電壓平衡,以避免該電池模組之間的壓差問題;該接觸器設置於所述單體電池之間並與所述繼電器相連接,所述電池模組係透過控制該接觸器間的閉合以連接或斷開所述繼電器,此外,尤須說明的是,所述單體電池之間的接觸器為閉合狀態時,此時所述繼電器會被斷開而形成一並聯方式;
請參閱第3圖,係為本發明鋰離子電池全方位安全監控方法之串、並聯均衡結構圖,具體流程如下:一均衡控制模組14由繼電器4組成的陣列、功率電阻和DC-DC轉換器組成,均衡方式包括靜置自然電量均衡、能量轉移均衡、被動均衡三種方式。在不同的電池工作狀況條件下,採用不同的均衡控制策略,三種均衡控制策略是:當系統監測到每個電池模組2內相同位置的單體電池出現個別少數電壓不一致時,採用靜置自然均衡;當系統檢測到每個電池模組2內不同位置的單體電池出現少數電壓不一致時,採用能量轉移均衡;當整個動力電源的絕大多數單體電池電壓均低於某些單體電池電壓時,需要對這些電池進行被動均衡,使其電壓與絕大部分電池保持一致,從而解決電池電壓的一致性問題。
Please refer to Figures 1 and 2 for the structural diagram and series and parallel structure diagrams of the lithium ion battery comprehensive safety monitoring system of the present invention. As shown in the figure, a lithium ion battery comprehensive safety monitoring system includes a battery module Group, a battery health management system, at least one relay, and at least one contactor, the battery module is composed of a plurality of single cells in series, the battery module is used to generate a power supply, especially to explain, The unit battery is a unit lithium ion battery; the battery health management system has a data acquisition unit and a data processing unit, and the battery health management system obtains the plurality of each unit battery through the data acquisition unit Pen data and process it through the data processing unit. The battery health management system is used to monitor the voltage and temperature and total current and total voltage of different locations of each single cell in real time. In addition, the battery The health management system further has a sensing unit and a warning unit. The sensing unit is used to sense and analyze whether the battery module is faulty, and generates a warning signal through the warning unit; the relay is used to control the battery The voltage of the modules is balanced to avoid the voltage difference between the battery modules; the contactor is arranged between the single cells and connected to the relay, and the battery module controls the contactor by The relay is closed to connect or disconnect the relay. In addition, it should be noted that when the contactor between the single cells is closed, the relay will be opened at this time to form a parallel mode;
Please refer to FIG. 3, which is a series and parallel balanced structure diagram of the comprehensive safety monitoring method of the lithium-ion battery of the present invention. The specific process is as follows: a
第一種均衡控制策略,靜置自然電量均衡控制是實現同一電池模組2內不同基本串聯分支相同位置的單體電池之間的電量均衡和不同電池模組2內相同位置的單體電池之間的電量均衡。
The first kind of balance control strategy, static natural power balance control is to achieve the power balance between the single cells in the same basic position in the
靜置自然電量均衡控制時無需用到DC-DC轉換器。如第3圖所示,通過微處理器DO輸出控制所述均衡控制模組14中各繼電器4的開通和關斷,實現電池的靜置自然電量均衡。
There is no need to use a DC-DC converter for static power balance control. As shown in FIG. 3, the output of the microprocessor DO controls the opening and closing of each
第二種均衡控制策略,少數單體電池間電量差異較大時,所述動力電池需要進行能量轉移均衡。 In the second balancing control strategy, when there is a large difference in power between a few single cells, the power battery needs to perform energy transfer balancing.
能量轉移均衡是實現同一電池模組2內,同一基本串聯分支內不同位置的單體電池之間的電量均衡。如第3圖所示,以對基本串聯分支A中的單體電池進行電量均衡為例進行說明,假設基本串聯分支A中電池4和電池3
電量未充滿,電池基本模組的電壓接入DC-DC轉換器輸入端,雙通道繼電器K1與DC-DC轉換器輸出埠連接,繼電器K1線圈得電導通後,通過DC-DC轉換器為單體電池4充電,單體電池4充滿後,繼電器K1斷開,繼電器K2導通,通過DC-DC轉換器為單體電池3充電,依次迴圈後,直至所有單體電池容量達到一致。
The energy transfer balance is to realize the power balance between the single cells at different positions in the same basic series branch within the
第三種均衡控制策略,當整個動力電源的絕大多數單體電池電壓均低於某些單體電池電壓時,需要對這些電池進行被動均衡,使其電壓與絕大部分電池保持一致,從而解決電池電壓的一致性問題。如第3圖所示,被動均衡控制策略為例進行說明。以對基本串聯分支A中的單體電池1的電量高於其餘所有單體電池電量,此時就需要進行被動均衡。此時,電池健康管理系統3中的繼電器4陣列和DC-DC轉換器均不啟動,通過控制該電池1並聯的功率電阻的控制開關對電池1進行放電,直至該電池與其餘單體電池容量達到一致。
The third equalization control strategy, when the voltage of the vast majority of single cells of the entire power supply is lower than the voltage of some single cells, these cells need to be passively balanced so that their voltages are consistent with most of the batteries. Solve the consistency problem of battery voltage. As shown in Figure 3, the passive equilibrium control strategy will be described as an example. In order to make the power of the
請參閱第4圖,係為本發明鋰離子電池全方位安全監控系統啟動瞬間繼電器陣列電氣圖,繼電器陣列中分為兩組K0-K3和K4-K7,繼電器陣列控制通過微處理器DO輸出控制,分為兩種控制狀態: Please refer to Fig. 4, which is the electrical diagram of the relay array at the moment of starting the lithium ion battery comprehensive safety monitoring system of the present invention. The relay array is divided into two groups K0-K3 and K4-K7. The relay array control is controlled by the microprocessor DO output control , Divided into two control states:
1、啟動過程中繼電器控制過程。 1. Relay control process during startup.
在動力電源主串回路中由N個單體電池串聯組成,但是由於單體電池電壓存在一定差異,從而導致數百個串聯組成的動力電源回路後,在總正和總負之間存在一個較大幾伏甚至十幾伏的電壓差,為避免此種危險,在啟動瞬間,每個電池模組2內繼電器陣列K0-K3依次閉合,使每個電池模組2的電壓處於一個無壓差的狀態,這樣在閉合主繼電器時,就能夠完成高
壓的建立,避免存在電壓差出現打火放電情況,高壓建立後,繼電器4陣列退出運行。
The main power circuit of the power supply is composed of N single cells connected in series, but due to a certain difference in the voltage of the single cells, there is a large difference between the total positive and the total negative after the power circuit composed of hundreds of series. The voltage difference of several volts or even dozens of volts, in order to avoid this danger, at the instant of start-up, the relay arrays K0-K3 in each
2、靜置自然均衡繼電器控制過程。 2. The control process of static natural balance relay.
當動力電源不輸出功率,高壓未建立,且需要均衡時,K0-K3和K4-K7兩組繼電器4按照順序依次吸合,開始整個電池模組2的均衡。
When the power supply does not output power, the high voltage is not established, and equalization is required, the
請參閱第5圖,係為本發明鋰離子電池全方位安全監控方法之流程圖,如圖所示,一種鋰離子電池全方位安全監控方法,係包括以下步驟:S801:提供一電池健康管理系統具有一資料處理單元用以發送一監測指令;S802:對一電池模組所產生之複數筆資料進行全方位監控;S803:將已監控之資料傳送至一感測單元,並判斷資料是否異常;S804:若所述資料被判斷為異常時,透過該電池健康管理系統以判斷是否需要報警;S805:若被判斷需報警,該健康電池管理系統係根據所述資料產生一警示訊號,並將所述警示訊號發送給所述資料處理單元;S806:所述資料處理單元根據所述警示訊號產生警示以提示或控制所述電池模組停止供電,結束本輪控制流程。 Please refer to FIG. 5, which is a flowchart of a comprehensive safety monitoring method for lithium-ion batteries of the present invention. As shown in the figure, a comprehensive safety monitoring method for lithium-ion batteries includes the following steps: S801: Provide a battery health management system A data processing unit is used to send a monitoring command; S802: comprehensive monitoring of multiple data generated by a battery module; S803: transmitting the monitored data to a sensing unit, and judging whether the data is abnormal; S804: If the data is judged to be abnormal, the battery health management system is used to determine whether an alarm is required; S805: If it is judged that an alarm is required, the healthy battery management system generates a warning signal according to the data, and The warning signal is sent to the data processing unit; S806: The data processing unit generates a warning according to the warning signal to prompt or control the battery module to stop power supply, and ends the current control flow.
此外,若所述資料被判斷為異常時,透過該電池健康管理系統以判斷是否需要報警後更包括兩步驟:判斷是否需要啟動或均衡控制,若為是,則進行啟動或均衡控制,並結束本輪控制流程,以開始下一輪控制流程; 再者,於所述將已監控之資料傳送至一感測單元,並判斷資料是否異常後更包括一步驟:若所述資料被判斷為正常後,會傳送至所述資料處理單元並存在一第一電壓異常時,產生一第一警示提示;另外,於所述將已監控之資料傳送至一感測單元,並判斷資料是否異常後更包括一步驟:若所述資料被判斷為正常後,會傳送至所述資料處理單元並存在一第二電壓異常時,產生一第二警示提示,並且控制所述電池模組停止供電,並持續全方位監控。 In addition, if the data is judged to be abnormal, the battery health management system determines whether an alarm is needed and further includes two steps: judging whether activation or equalization control is required, and if so, performing activation or equalization control and ending This round of control flow to start the next round of control flow; Furthermore, after the monitored data is sent to a sensing unit and it is determined whether the data is abnormal, a step is further included: if the data is determined to be normal, it will be sent to the data processing unit and there is a When the first voltage is abnormal, a first warning prompt is generated; in addition, after the monitored data is sent to a sensing unit and it is determined whether the data is abnormal, a step is further included: if the data is determined to be normal , When it is sent to the data processing unit and there is a second voltage abnormality, a second warning prompt is generated, and the battery module is controlled to stop supplying power and continue to be monitored in all directions.
透過本發明此結構的設計及步驟流程,所述電池模組產生的動力電源其電流係主要以串聯連接電路的方式相連接,並透過所述電池健康管理系統提高電壓、溫度及電流的測量精度,另外,於避免電池模組過充電和過放電的控制方面,則可藉由所述感測單元及警示單元以達到判斷電池模組是否故障,若故障則會透過該警示單元產生所述警示訊號,進以達成對該系統的各種性能全方位監控,因此,所述電池健康管理系統能夠即時監控到每個單體電池的電壓狀態,具備了對電池模組故障的即時分析能力,對電池模組的濫用進行預警和報警的提醒,對分析故障原因、故障定位提供方便,為電池的維護提供便利;於均衡方面,增加了電池的均衡控制能力,提出了電池模組之間單體電池均衡方法,具備靜置自然均衡和被動均衡等均衡措施。 Through the design and step flow of the structure of the present invention, the current of the power supply generated by the battery module is mainly connected in series connection circuit, and the measurement accuracy of voltage, temperature and current is improved through the battery health management system In addition, in order to avoid the overcharge and overdischarge control of the battery module, the sensing unit and the warning unit can be used to determine whether the battery module is faulty. If the failure occurs, the warning unit will generate the warning Signal to achieve a full range of monitoring of various performances of the system. Therefore, the battery health management system can monitor the voltage status of each single cell in real time, and has the ability to analyze battery module faults in real time. The abuse of modules provides early warning and alarm reminders, which facilitates the analysis of the cause of the fault and the location of the fault, and facilitates the maintenance of the battery; in terms of balance, it increases the balance control capability of the battery and proposes a single battery between battery modules Equilibrium method, with equilibrium measures such as static natural equilibrium and passive equilibrium.
於本發明中,係以鋰離子電池全方位安全監控系統及其方法用於一電動汽車為例進行說明(圖中未示),該電動汽車發動時,所述電池健康管理系統(HBMS)對整個動力電源進行全方位資料監控,當全方位監控資料完全正常時,發出高壓建立指令,首先該繼電器開始產生閉合狀態, 幾秒後所述接觸器也為閉合狀態,閉合完成後,斷開所述繼電器,進以達到完成整個動力電源串聯方式並實現高壓建立;而若當資料處理單元發現某個資料出現問題(例如:單體電池出現電壓過低,絕緣監測警示或者運行時出現車禍等等),能夠禁止閉合或瞬間斷開整個動力電源的高電壓狀態,實現動力電源的安全低電壓狀態,避免造成不必要的二次傷害。 In the present invention, the lithium ion battery comprehensive safety monitoring system and its method are used as an example for an electric vehicle (not shown in the figure). When the electric vehicle is started, the battery health management system (HBMS) The entire power supply is under full-range data monitoring. When the full-range monitoring data is completely normal, a high voltage establishment command is issued. First, the relay begins to produce a closed state. After a few seconds, the contactor is also closed. After the closure is completed, the relay is opened to complete the entire power supply series connection and achieve high-voltage establishment; and if the data processing unit finds that there is a problem with the data (such as : The voltage of the single battery is too low, the insulation monitoring warning or the occurrence of a car accident during operation, etc.), it can prohibit the closing or instantaneous disconnection of the high voltage state of the entire power supply, to achieve a safe low voltage state of the power supply, to avoid unnecessary unnecessary Secondary injury.
因此,藉由所述電池健康管理系統的控制,進以實現整個系統的高電壓安全解除,達到於危險環境下電池無害化處理,並於電池健康管理系統的監控下,各項資料完全正常以建立整個高壓系統,並藉由該繼電器陣列的控制形成所述電池模組的電壓平衡,避免於串聯情況下整個電池模組之間的壓差問題,最後控制每個電池模組2之間的接觸器閉合後以斷開繼電器,從而完成高壓系統的建立,即為一鋰離子電池全方位安全監控系統之串聯結構,當遇到危險環境時,如電池模組進水、車禍等環境下,所述接觸器會自動斷開,實現整個系統的高電壓接觸,不會造成無法斷開高壓電源的危險狀態。
Therefore, through the control of the battery health management system, the high voltage of the entire system can be safely released to achieve the harmless treatment of the battery in a hazardous environment, and under the monitoring of the battery health management system, all the data is completely normal. The entire high-voltage system is established, and the voltage balance of the battery modules is formed by the control of the relay array, to avoid the voltage difference between the entire battery modules in the case of series connection, and finally to control the voltage between each
以上已將本發明做一詳細說明,惟以上所述者,僅為本發明之一較佳實施例而已,當不能限定本發明實施之範圍,即凡依本發明申請範圍所作之均等變化與修飾等,皆應仍屬本發明之專利涵蓋範圍。 The present invention has been described in detail above, but the above are only one of the preferred embodiments of the present invention, but the scope of implementation of the present invention cannot be limited, that is, any equivalent changes and modifications made according to the scope of the application of the present invention Etc., should still be covered by the patent of the present invention.
S801~S810‧‧‧步驟 S801~S810‧‧‧Step
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