201232881 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種電池管理系統切換方法，尤指一種 適用於電動車輛之電池管理系統切換方法。 【先前技術】 安全可罪的電池組產品，是各電池製造廠除在後段電 # 池保5蒦電路系統設計上的關鍵技術。電池管理系統（Battery201232881 VI. Description of the Invention: [Technical Field] The present invention relates to a battery management system switching method, and more particularly to a battery management system switching method suitable for an electric vehicle. [Prior Art] The safe and sinful battery pack product is the key technology of each battery manufacturer except for the circuit design of the rear section. Battery Management System (Battery
Management System，簡稱bMS),主要用於監控電池組的操 作狀態，包括、溫度、電壓、充電和放電電流以及充電狀 態，以便提供詳細的剩餘供電時間和電池健康資訊，確保 使用者做出正確的電源管理判斷。 為了增強電池組的安全，只要電池組出現電流過大、 短路、電壓過高、或是過熱等任何異常現象，電池管理系 、-充會產生警不信號提供使用者必需進行電池維修，且電池 ¥里系，.先將切斷系統與電池組間的連線，以避免電池組持 續劣化。 目削市面上的電池組為了避免電池組劣化的情形發 =，一般會加裝電池管理系統以管控電池組的電量消耗。 ’而加上了電池管理系統之後，卻會加快電池組的容量 消耗，而造成電池組更容易發生過放電的現象。 舉例來忒’一組丨〇安培小時（Ah)的鋰電池組原本的自 放電為個月消耗〇 2安培小時，在電池為充飽的狀態下可 乂 k放二年以上不會發生過放電◊但是，電池管理系統一 201232881 只要電池組擺放超過半 鑑於此，確實有必要針 個月的電量銷耗高達18安培小時， 年就一定會發生過放電的情形。有 對此一課題進行改善。 【發明内容】 本發月之主要目的係在提供一種電池管理系統切換方 法’俾能通過不同切換方式來提升電池組的儲電時間。 為達成上述目的，本發明之電池管理系統係電性連接 至:電池組’其具有三種切換模式，包括：—工作模式、 一靜置模式、及-休眠模式，其中，工作模式係電池管理 ί統控制電池組處於充電、或放電狀態，靜置模式係電池 官理系統控制電池組處於非充電、或非放電狀態，休眠模 式係電池管理系統控制電池組處於斷路狀態。電池管理系 ，之切換方法包含下述步驟：(Α)電池管理系統偵測電池組 是否處於靜置模式超過-特定時間，若是，則執行步驟 (Β).電池管理系統控制電池組進入該休眠模式。 較佳地，本發明之電池組係為一包含有複數顆電池芯 之鋰電池組，電池管理系統可包含有一計時器以偵測電池 組之靜置時間。另夕卜’本發明更可包含有一手動開關，其 係電性連接至電池組，以可手動切換電池組之工作模式、 靜置模式 '及休眠模式。 其次’本發明之電池管理系統的切換方法可與電動車 的鑰匙開關、啟動開關作連結，電池管理系統係電性連接 至—電池組、一鑰匙開關、及一啟動開關。當鑰匙開關關 201232881 閉時’電池管理系統控制電池組進入休眠模式；當鑰匙開 關開啟時’電池管理系統控制電池組進入靜置模式；當啟 動開關開啟時，電池管理系統控制電池組由靜置模式進入 工作換式’當啟動開關關閉時，電池管理系統控制電池組 由工作模式進入靜置模式。 【實施方式】Management System (bMS) is mainly used to monitor the operating status of the battery pack, including temperature, voltage, charging and discharging current and charging status, in order to provide detailed remaining power supply time and battery health information to ensure that the user makes the correct Power management judgment. In order to enhance the safety of the battery pack, as long as the battery pack has any abnormalities such as excessive current, short circuit, high voltage, or overheating, the battery management system will generate a warning signal to provide the user with battery maintenance, and the battery is ¥ In the middle, the connection between the system and the battery pack will be cut off first to avoid continuous deterioration of the battery pack. In order to avoid the deterioration of the battery pack, a battery management system is generally installed to control the power consumption of the battery pack. With the addition of the battery management system, it will speed up the battery pack's capacity consumption, which will make the battery pack more prone to over-discharge. For example, the original self-discharge of a set of ampere-hour (Ah) lithium battery packs is consuming 2 ampere-hours per month. When the battery is fully charged, it can be placed for more than two years without overdischarge. ◊ However, the battery management system 201232881 As long as the battery pack is placed more than half of this, it is really necessary to charge the battery for up to 18 amp hours in a month, and the over-discharge will occur in the year. There is an improvement on this topic. SUMMARY OF THE INVENTION The main purpose of this month is to provide a battery management system switching method that can improve the storage time of the battery pack by different switching modes. To achieve the above object, the battery management system of the present invention is electrically connected to: a battery pack having three switching modes, including: - an operating mode, a rest mode, and a - sleep mode, wherein the operating mode is battery management ί The battery pack is in charge or discharge state. In the static mode, the battery management system controls the battery pack to be in a non-charging or non-discharging state. In the sleep mode, the battery management system controls the battery pack to be in an open state. In the battery management system, the switching method includes the following steps: (Α) The battery management system detects whether the battery pack is in the rest mode for more than - a specific time, and if so, performs the step (Β). The battery management system controls the battery pack to enter the sleep. mode. Preferably, the battery pack of the present invention is a lithium battery pack including a plurality of battery cells, and the battery management system can include a timer to detect the battery pack standing time. In addition, the present invention further includes a manual switch electrically connected to the battery pack to manually switch the operating mode of the battery pack, the rest mode, and the sleep mode. Secondly, the switching method of the battery management system of the present invention can be connected to the key switch and the start switch of the electric vehicle, and the battery management system is electrically connected to the battery pack, a key switch, and a start switch. When the key switch is off 201232881, the battery management system controls the battery pack to enter the sleep mode; when the key switch is turned on, the battery management system controls the battery pack to enter the rest mode; when the start switch is turned on, the battery management system controls the battery pack to be placed. The mode enters the work mode. When the start switch is turned off, the battery management system controls the battery pack to enter the rest mode from the operating mode. [Embodiment]
清先參考圖1 ’其係本發明第一實施例之系統架構圖。 如圖所不’本發明之電池管理系統H系電性連接至—電池組 2°電池管理系統1包含有—計時器11，電池組2係為-包含 有複數顆電池芯之鋰電池組。 本發明之電池管理系❸具有三種切換模式，包括：一 工作模式、-靜置模式、及—休眠m巾，工作模式 係電池管理系統1控制電池組2處於充電、或放電狀態，靜 置模式係電池管理系統1控制電池組2處於非充電或非放 電^態，休眠模式係電池管理系統i控制電池組2處於斷路 恶。所謂的斷路狀態’是指電池組2中 超過過放電保護點，故電池管理系統！_池組=路 之靜置模式與休眠模式在功能上有所不同。於 奸置拉式中’電池管理系統丨有9_功能需要正常運作， 旦在休眠模式中，電池管理系統】只需要維持·。的功能左 即可，因此兩種模式的消耗電流會差到丨〇倍以上 下會消 •2安培 从k知技術中所舉的例子，一個月在靜置木 耗1.8安培小時的電；f，在休眠模式下大约只會消 201232881 J夺左右的電1。因此，若以同一組充飽的鐘電池組而言， 保持靜置模式電量無法支㈣半年，若能在適當的時機下 將電池管理系統1切換至休眠模式，則可以支樓到兩年左 右’都不會有過放電的情形發生。但需要說明的是，不能 任意地將電池管理系統1切換至休眠模式，因為在休眠模式 下’無法進行正常放電，必須要充電後才會回到靜置模式。 接著’請參考圖2所示本實施例之方法流程圖，本發明 所提供之電池管理系統…換方法為：電池管理系統⑼计 時器⑴貞測電池組2是否處於靜置模式超過一特定 驟S2D’例如，是否超過168小時？若是，則電池管理系統 1控制電池組2進入休眠模式（步驟S22)。 通過，發明所提供之方法，電池組2處於卫作模式時， 只要電池管理系統！不造成續航力縮減太多（例如減少⑼以 内），或是充電時間拉長太多(例如增加1〇% 到節省電力的基本要求。 』适 一/然，本發明電池管理系統1之切換動作，亦可由手動 -成。晴參考圖3所示之第二實施例示意圖。如圖所 :明另可包含有-手動開關3以手動切換工作模 2及休眠模式，其中，手動„3係與電池組2電性連接= :二必須夕做說明的是’在設計上手動開，必 二避免電池組2被不當誤觸為休眠模式、或 狀置換式。當確定長時間不會使用電池組2時，使用者可^ 用手動開關3將電池管理系⑹切換為 時，再手動切換為靜置模式即可。 ' *要使用 201232881 另外本發明的切換方法亦可與電動車的錄匙開關、 啟動開關作連結’請參考圖4所示之第三實施例示意圖。如 圖所不電池S理系統i係再電性連接至一錄匙開關4、及 -啟動開關5。本實施例之實現方法，請參考圖5所示：當 鑰匙開關4關閉時，電池管理系統丨控制電池組2進入休眠模 式（步驟S51);當鑰匙開關4開啟時，電池管理系統丨控制電 池組2進入靜置模式（步驟S52)。當啟動開關5開啟時，電池 官理系統控制電池組2由靜置模式進入工作模式（步驟 S53)，此時，電池組2係正常放電；當啟動開關5關閉時， 電池管理系統1控制電池組2由工作模式進入靜置模式（步 驟S54)。 综合上述，經由本發明所提供之切換方法，可有效掌 控電池組2的電量消耗’以避免電池組2發生過放電的情 況。然而’上述實施例僅係為了方便說明而舉例而已，本 發明所主張之權利範圍自應以申請專利範圍所述為準，而 非僅限於上述實施例。 【圖式簡單說明】 圖1係本發明第一實施例之示意圊。 圖2係本發明第一實施例之方法流程圖。 圖3係本發明第二實施例之示意圖。 圖4係本發明第三實施例之示意圖。 圖5係本發明第三實施例之方法流程圖❶ 201232881 【主要元件符號說明】 1 電池管理系統 11 計時器 2 電池組 3 手動開關 4 鑰匙開關 5 啟動開關 步驟 S21 〜S22，S51 〜S54Referring first to Figure 1 ', it is a system architecture diagram of a first embodiment of the present invention. As shown in the figure, the battery management system H of the present invention is electrically connected to the battery pack. The battery management system 1 includes a timer 11 which is a lithium battery pack including a plurality of battery cells. The battery management system of the present invention has three switching modes, including: an operating mode, a resting mode, and a dormant m towel, and the working mode is a battery management system 1 that controls the battery pack 2 to be in a charging or discharging state, and the rest mode The battery management system 1 controls the battery pack 2 to be in a non-charging or non-discharging state, and the sleep mode is that the battery management system i controls the battery pack 2 to be in an open circuit. The so-called open circuit state means that the battery pack 2 exceeds the overdischarge protection point, so the battery management system! _ pool group = road static mode and sleep mode are different in function. In the battery management system, the battery management system has a 9_ function that needs to operate normally. In the sleep mode, the battery management system only needs to be maintained. The function can be left, so the current consumption of the two modes will be worse than 丨〇 times. 2.2 amps from the k-technical example, one month in the static wood consumption of 1.8 amps of electricity; f In sleep mode, it will only cancel the electricity of around 201232881 J. Therefore, if the battery pack of the same group is fully charged, the power remaining in the static mode cannot be supported (four) for half a year. If the battery management system 1 can be switched to the sleep mode at an appropriate timing, the branch can be extended to about two years. 'There will be no over-discharge. However, it should be noted that the battery management system 1 cannot be arbitrarily switched to the sleep mode because the normal discharge cannot be performed in the sleep mode, and it is necessary to charge before returning to the rest mode. Next, please refer to the method flowchart of the embodiment shown in FIG. 2, and the battery management system provided by the present invention is replaced by: a battery management system (9) a timer (1) to detect whether the battery pack 2 is in a static mode or more than a specific Step S2D' For example, is it more than 168 hours? If so, the battery management system 1 controls the battery pack 2 to enter the sleep mode (step S22). By the method provided by the invention, when the battery pack 2 is in the security mode, as long as the battery management system! Does not cause too much endurance reduction (for example, less than (9)), or the charging time is too long (for example, increasing 1%% to the basic requirement of saving power.) Depending on the switching action of the battery management system 1 of the present invention, It can also be manually-formed. Refer to the schematic diagram of the second embodiment shown in FIG. 3. As shown in the figure: a manual switch 3 can be included to manually switch the working mode 2 and the sleep mode, wherein the manual „3 series and the battery Group 2 electrical connection =: Two must explain that it is 'manually open on the design, must avoid the battery group 2 is improperly touched into sleep mode, or shape replacement. When it is determined that the battery pack will not be used for a long time 2 When the user can switch the battery management system (6) to the manual switch 3, and then manually switch to the rest mode. ' *To use 201232881, the switching method of the present invention can also be combined with the electric vehicle's key switch, The startup switch is connected. Please refer to the schematic diagram of the third embodiment shown in FIG. 4. As shown in the figure, the battery system i is electrically connected to a key switch 4 and a start switch 5. The implementation of this embodiment Method, please refer to Figure 5 When the key switch 4 is turned off, the battery management system 丨 controls the battery pack 2 to enter the sleep mode (step S51); when the key switch 4 is turned on, the battery management system 丨 controls the battery pack 2 to enter the rest mode (step S52). When the switch 5 is turned on, the battery management system controls the battery pack 2 to enter the working mode from the rest mode (step S53). At this time, the battery pack 2 is normally discharged; when the start switch 5 is turned off, the battery management system 1 controls the battery pack 2 From the working mode, the static mode is entered (step S54). In summary, according to the switching method provided by the present invention, the power consumption of the battery pack 2 can be effectively controlled to avoid over-discharge of the battery pack 2. However, the above embodiment The scope of the claims is intended to be illustrative only and not limited to the above embodiments. FIG. 1 is a first embodiment of the present invention. Figure 2 is a flow chart of a method according to a first embodiment of the present invention. Figure 3 is a schematic view of a second embodiment of the present invention. Figure 4 is a third embodiment of the present invention. Intention. Figure 5 is a third embodiment of the method of the present invention, the main elements of a flowchart ❶ 201232881 [REFERENCE SIGNS LIST 11 battery timer 2 3 4 key switch 5 switches manually start switch Step S21 ~S22 1 battery management system, S51 ~S54
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