201214921 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種電池管理系統，特別是涉及一種具有動 態分配充電電流功能的電池管理系統和方法。 【先前技術】 [0002] 傳統的AC適配器具有有限的輸出電流，系統供電和對系 統内電池充電相對獨立控制’設計時候需要考慮糸統的 最大耗電，剩下的電流再分給電池充電。因此，當系統 負載開啟（運行）時，這些傳統的AC適配器可能無法支 持對電池快速充電。例如，一種傳統的充電方法採用的 AC適配器可以為系統供電，或可以為電池充電。這樣， 當系統運行時則無法為電池充電。另一種傳統充電方法 採用的AC適配器既可以為系統供電，同時也能夠以一種 大的充電電流為電池充電。然而，這類AC適配器結構複 雜且成本較高。 [0003] 但是在實際中，往往系統耗電在不斷變化，不會一直工 作在其耗電最大狀態，這樣電池還是以原先設置的電流 充電，沒有充分利用總電源的輸入電流能力；另外一方 面，電池充電電流一直處於固定的大小，導致充電時間 也較長。並且，當輸入系統耗電瞬間抽載電流超過總輸 入電源的帶載能力，又無法從電池處補充，這樣只能提 高總輸入電源的帶載能力，從而增加總輸入電源的製造 成本。 【發明内容】 [0004] 有鑒於此，有必要提供一種電池管理系統和方法，可以 099133052 表單編號A0101 第4頁/共19頁 0992057819-0 201214921 動態分配充電電流，實現輸入電源利用率最大化。 [0005] Ο 一種電池管理系統，包括電源、系統負載、電池及主控 制單元。該電池管理系統還包括：一電源轉換器，用於 根據該系統負載正常工作所需的工作電流，將該電源的 供電電流分成兩部分，一部分為該系統負載提供工作電 流’剩餘部分為該電池提供充電電流。一第一電源開關 及一第一電源開關。該主控制單元’用於當流經該電源 轉換器的電源所提供的供電電流滿足一預設的電流門限 值時’打開第一電源開關及第二電源剩關。其中，該為 系統負載提供的工作電流經由該.第一電源開關提供給系 統負載，該為電池充電提供的充電電流經由該第二電源 開關提供至電池。 I \ [0006] 一種電池管理系統實現充電電流動態分配的方法，其中 ’該電池管理系統包括：電源、電池、系統負載、第一 電源開關及第二電源開關。該方法.包括： [0007] G [0008] 接入電源’偵測該電源提供的供電電流是否大於一預設 電流門限值。 在該電源的供電電流大於該電流門限值時，根據該系統 負載的需要即時將該電源的供電電流分成兩部分，一部 分通過第一電源開關為系統負載提供工作電流，該提供 給負載的工作電流根據負載的需要變化，剩餘部分通過 第·一電源開關為電池充電。 相對於現有技術，本發明提供了一種可動態分配充電電 流的電源路徑方案，電源為系統負載工作供電和為電池 099133052 表單編號A0101 第5頁/共19頁 0992057819-0 [0009] 201214921 充電供電實行動態分配電流，隨著线負載的耗電電流 的改變’分配至電池的充電電流也隨之調整，實現電: 的供電電流最大化的使用。當關系統負載時，電源的 全《ΙΗ、電電流用於為電池充電’實現電池的快速充電。 且電源結構簡單，且成本較低。 [0010] [0011] [⑻ 12] [0013] 099133052 另外一方面，當系統負載瞬間耗電電流增加，超過電源 的總輸入電源的帶載能’可以從現有電池補充，為系統 負載供電’這樣就能夠提高電源輸人帶載能力，從而降 低總輸入電源成本。 【實施方式】 下面將結合附圖，對本發明作進—步的詳細說明。 參閱圖1所示，是本發明一個實施例的具有動態分配充電 電机功忐的電池管理系統i 〇 〇的方框圖。該電池管理系統 1〇〇包括電源10、系統負載丨丨及電池12。其中，電源1〇 可以為系統負載11工作提俱工作電流，及為電池丨2充電 提供充電電流。電池12可以為系統負載丨丨供電。 忒電池管理系統1〇〇還包括電叙轉換器13、主控制單元 、電源電流偵測單元15和電池電流偵測單元16。該電源 轉換器13，用於根據系統負載丨丨正常工作所需的工作電 流，將通過該電源轉換器13 (例如，降壓型DC/I)C轉換器 )的電源10 (例如AC適配器）的供電電流分成兩部分， 一部分為系統負載11提供工作電流，剩餘部分為電池j 2 知:供充電電流。该電源電流偵測單元15用於偵測電源1 〇 提供至該電源轉換器1 3的供電電流的大小。該電池電流 偵測單元16用於偵測該電源10為電池12充電提供的充電 表單編號A0101 第6頁/共19頁 201214921 電流的大小。 [0014] 若該電池管理系統100正常工作，則該系統負載η必需從 電源10獲取其正常工作所需的m㈣❹地獲 取電流’否則’則該系統⑽無法正常工作。而電池12充 電所需的充電電流的大小則不是-定值，可由電源i。根 據系統H作的情況提供，即為被祕提供電汽。 因此 Ο ’當该系統負載11正常工作時’電源10的供電電流會優 先滿足系統負載11正常工作的工作電流。從而，當電源 正常工作所需的工作電流，自動將其分成兩部分，一部 分為系統負載11提供工作電流，剩餘部分為電池12提供 充電電流。例"°，系統負載η正常工作的電流為，電 源1〇的總供電電流糊Α，職供電電流經電源 轉換器13時，優先為系統負載n提供術的工作電流剩 [0015]Ο 餘的50A為電池12提供充電電流。 在該電池管理系統ΠΗ)中，設置為電池12充電的最大允許 充電電流為電源ί〇的最大允許供電電流。隨著系統負載 11工作所需的工作電流的變化（如增加或減少），供應 至電池12的充電電流也會隨之改變（如減少或增加）。 並且當關閉系統負載11時，電源1〇的供電電流全部為電 池12充電，即以其最大供電電流充電。從而，該電池管 理系統100可實現充電電流的動態分配。 [0016] 099133052 該電池管理系統1〇〇還包括第一電源開關17和第二電源開 關18。該第一電源開關18為一雙嚮導通開關，當該第二 電源開關18正嚮導通時，電源10提供的電流可為電池12 表單編號Α0101 第7頁/共19頁 0992057819-0 201214921 充電，當該第二電源開關18反嚮導通時，電池Μ可向系 、、先負載11供電；當該第二電源開關18雙向均不導通時， 則該第二電源開關18截止。 [0017] [0018] [0019] 該電池管理系統100會預先設置—電流門限值，即電㈣ 的供電電流可以滿足系統負載lliL常工作所需的電流。 當電源電流偵測單元咖職經該電源轉換㈣的電源 10的電流，並將該_結果傳送至主控制單元14時該 主控制單元14判斷該偵測的電流大小是否大於上述的電 流門限值。若大於電流門限值，則該主控制單元14控制 打開第一電源開關1 7，t源Ϊ0提供電流為系統負載丨J供 電。同時主控制單元14控制第二電源開關18正嚮導通， 電源10除為系統負載11提供工作電流外，剩下的電流為 電池12提供充電電流。如果電源10的電流小於電流門限 值，則主控制單元14判斷該電源1〇的電流無法維持系統 正常工作，則控制該第一電源開關17和策；電源開關18 截止。 該電源電流偵測單元1 5和電池電流偵測單元1 6會分別即 時地偵測流經該電源轉換器13的電源1 〇的供電電流及為 電池12充電的充電電流’並且當為電池12充電的充電電 流小於其充電截止電流，且提供至該電源轉換器13的供 電電流小於電源1 0的最大允許供應電流時，主控制單元 14判斷電池12充電完成，控制關閉第二電源開關18。 通常，電池12充電充滿的判斷標準是其充電電流小於一 個設定值，即戴止電流。但是，在該電池管理系統1 Q Q中 099133052 表單編號A0101 第8頁/共19頁 0992057819-0 [0020] 201214921 ，由於供應至電池12的充電電流會隨著純負額的工 作電流的變化錢之改變，料出現賴—種情況：當 系統負載11所需的工作電流較大時，為電池12充電的充 電電流就會隨之減少’而電源電流偵測單元15偵測到的 流經電源轉細3的供電電流的大小仍然為電源1〇的最 大供電電流H電池電流偵測單元⑻貞測該充電電 流的大小小於該截止電流，主控制單元14就會判斷電池 12充電完成，從而關閉第二電源開關18。但是，實際的 情況卻有可能是電池12尚未完成充電，而是由於供應至 系統負載11的工作電綠增加而導致的誤判斷。而通過設 ..... :丨... .. . 置上述條件，當電池電流偵測單元16偵測到的電池12的 充電電流的大小小於該截止電流的同時，電源電流偵測 單元15偵測到的提供至電源轉換器〗3的供電電流的大小 小於電源10的最大允許供電電流，說明此時系統負載u 的工作電流大小不變，而是由於電池12的充電電流減小 而導致流經電源轉換器13的供電電流變小，從而判斷電 池1 2充電完成。因此’通過設置電源1 〇的供電電流及電 池1 2的充電電流_同時滿足上.述.條件可以防止誤判斷的 情況。 [0021] 進一步地’當主控制單元14通過電池電流偵測單元1 6傳 送的偵測結果，判斷供給電池1 2的充電電流瞬間減小至 零時，確定此時系統負載11瞬間的耗電電流過大時，並 超過電源10的最大允許供電電流，則主控制單元14控制 第二電源開關18反嚮導通，電池12不再進行充電，而是 向系統負載11供電（如圖1所示虛線部分）。實現當系統 099133052 表單編號Α0101 第9頁/共19頁 0992057819-0 201214921 [0022] [0023] [0024] [0025] [0026] 負載11耗電瞬間抽載電流料總輸人電源的帶載能力時 ，從現有電池12補充電流，從而減少㈣人電源_成 本0 使用上述電池管理系統100，電源1〇為系統負載n工作供 電和為電池12充電供電實行動態分配電流，隨著系統負、 載11的耗電電流的改變，分配至電池12的充電電流也隨 之調整’實現電源10的供電電流最大化的使用。當關閉 系統負載11時，電源1〇的全部供電電流用於為電池12充 電’實現電池12的快速充電。且電源結構簡單，且成本 較低。 另外-方面，當系統負載u瞬間耗電電流增加超過電 源10的總輸入電源的帶載能力，可以從現有電池12補充 為系統負載11供電，這樣就能夠提高電源輸人帶載能力 ，從而降低總輸入電源成本。 參閱圖2所示，是本發明魏無域巾電源實現充電電 流動態分配的方法的流程圖_。 步驟S20 ’電池管理系統⑽接入電源1()，電源電流偵、測 單元15偵測電源1G提供的供電電流是否大於電流門限值 ，若是，則進入步驟S21 ;否則，則繼續該步驟。 该電池管理系統1〇〇會預先設置一電流門限值，即電源1〇 的供電電流可以滿足系統負載丨丨正常工作的電流。如果 電源ίο的電流小於電流門限值，則主控制單元14判斷該 電源10的電流無法維持系統正常工作，則控制該第一電 源開關1 7截止。 099133052 表單編號A0101 第頁/共19頁 0992057819-0 201214921 酬轉S21，若偵測結果滿足電流門限值，則該主控制單元 14控制打開第—電源開關17，同時控制第二電源開關μ 正嚮導通。 ο201214921 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to a battery management system, and more particularly to a battery management system and method having a function of dynamically distributing a charging current. [Prior Art] [0002] Conventional AC adapters have limited output current, system power supply and relatively independent control of battery charging in the system. The design needs to consider the maximum power consumption of the system, and the remaining current is divided into battery charges. Therefore, these traditional AC adapters may not be able to quickly charge the battery when the system load is turned on (running). For example, a conventional charging method uses an AC adapter that can power the system or can charge the battery. This way, the battery cannot be charged while the system is running. Another conventional charging method uses an AC adapter that can power the system while also charging the battery with a large charging current. However, such AC adapters are complex and costly. [0003] However, in practice, the system power consumption is constantly changing, and it will not always work in its maximum power consumption state, so that the battery is charged with the originally set current, and the input current capability of the total power source is not fully utilized; The battery charging current is always at a fixed size, resulting in a longer charging time. Moreover, when the input system consumes an instantaneous load current exceeding the load capacity of the total input power supply, it cannot be replenished from the battery, which can only increase the load capacity of the total input power supply, thereby increasing the manufacturing cost of the total input power supply. SUMMARY OF THE INVENTION [0004] In view of the above, it is necessary to provide a battery management system and method that can dynamically allocate charging current to maximize input power utilization by 099133052 Form No. A0101 Page 4 of 19 0992057819-0 201214921. [0005] 电池 A battery management system including a power supply, a system load, a battery, and a main control unit. The battery management system further includes: a power converter for dividing the supply current of the power supply into two parts according to the working current required for the normal operation of the system load, and a part of the operating current is supplied to the system load. The remaining part is the battery. Provide charging current. A first power switch and a first power switch. The main control unit ' is for turning on the first power switch and the second power remaining when the supply current supplied from the power supply of the power converter satisfies a predetermined current threshold. The operating current supplied to the system load is supplied to the system load via the first power switch, and the charging current provided for battery charging is supplied to the battery via the second power switch. I [0006] A battery management system for realizing dynamic charging current distribution, wherein the battery management system comprises: a power source, a battery, a system load, a first power switch, and a second power switch. The method includes: [0007] G [0008] The access power source detects whether the power supply current provided by the power source is greater than a predetermined current threshold. When the power supply current of the power source is greater than the current threshold, the power supply current of the power supply is divided into two parts according to the requirement of the system load, and a part of the power supply current is supplied to the system load through the first power switch, and the working current supplied to the load Depending on the needs of the load, the remaining part charges the battery through the first power switch. Compared with the prior art, the present invention provides a power path scheme for dynamically allocating charging current, the power supply is for system load operation and is for the battery 099133052 Form No. A0101 Page 5 / 19 pages 0992057819-0 [0009] 201214921 Charging power supply The dynamic current is distributed, and as the current consumption of the line load changes, the charging current distributed to the battery is also adjusted to achieve the maximum use of the power supply current. When the system load is turned off, the power supply's full “ΙΗ, electric current is used to charge the battery” to achieve fast charging of the battery. And the power supply structure is simple and the cost is low. [0011] [(8) 12] [0013] 099133052 On the other hand, when the system load instantaneous power consumption current increases, the load energy of the total input power source exceeding the power supply can be supplemented from the existing battery to supply the system load. It can improve the load capacity of the power input, thereby reducing the total input power cost. [Embodiment] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Referring to Figure 1, there is shown a block diagram of a battery management system i 〇 具有 with dynamically assigned charging motor operation in accordance with one embodiment of the present invention. The battery management system 1 includes a power source 10, a system load port, and a battery 12. Among them, the power supply 1〇 can work for the system load 11 to provide operating current, and provide charging current for charging the battery 丨2. Battery 12 can supply power to the system load port. The battery management system 1 further includes a motorized converter 13, a main control unit, a power supply current detecting unit 15, and a battery current detecting unit 16. The power converter 13 is configured to pass a power source 10 (eg, an AC adapter) through the power converter 13 (eg, a step-down DC/I) C converter according to an operating load required for normal operation of the system load. The supply current is divided into two parts, one part provides the working current for the system load 11, and the remaining part is the battery j 2: the charging current. The power supply current detecting unit 15 is configured to detect the magnitude of the power supply current supplied from the power source 1 to the power converter 13. The battery current detecting unit 16 is configured to detect the charging provided by the power source 10 for charging the battery 12. Form No. A0101 Page 6 of 19 201214921 Current size. [0014] If the battery management system 100 is operating normally, the system load η must acquire m (four) from the power source 10 to obtain the current required for normal operation. Otherwise, the system (10) cannot operate normally. The magnitude of the charging current required to charge the battery 12 is not a constant value and can be supplied by the power source i. According to the situation of system H, it is provided that the electric steam is provided by the secret. Therefore, when the system load 11 is operating normally, the power supply current of the power supply 10 will preferentially satisfy the operating current of the system load 11 for normal operation. Thus, when the power supply is operating normally, the operating current is automatically divided into two parts, one is divided into system load 11 to provide operating current, and the remaining portion is to provide charging current for battery 12. Example " °, the system load η normal working current is, the total supply current of the power supply 1 Α, the service current through the power converter 13, the system load n is preferentially provided with the operating current remaining [0015] The 50A provides a charging current for the battery 12. In the battery management system (ΠΗ), the maximum allowable charging current set to charge the battery 12 is the maximum allowable supply current of the power supply. As the operating current required to operate the system load 11 changes (e.g., increases or decreases), the charging current supplied to the battery 12 also changes (e.g., decreases or increases). And when the system load 11 is turned off, the supply current of the power supply 1〇 is all charged for the battery 12, i.e., charged with its maximum supply current. Thus, the battery management system 100 can achieve dynamic distribution of charging current. [0016] The battery management system 1 further includes a first power switch 17 and a second power switch 18. The first power switch 18 is a double-conducting switch. When the second power switch 18 is conducting, the current supplied by the power source 10 can be charged by the battery 12 form number Α0101, page 7 / 19 pages 0992057819-0 201214921. When the second power switch 18 is reversely turned on, the battery pack can supply power to the system and the first load 11; when the second power switch 18 is not turned on in both directions, the second power switch 18 is turned off. [0019] [0019] The battery management system 100 will preset a current threshold value, that is, the power supply current of the electric (four) can satisfy the current required for the system load 11iL to work normally. When the power supply current detecting unit passes the power of the power supply 10 of the power conversion (4) and transmits the result to the main control unit 14, the main control unit 14 determines whether the detected current is greater than the current threshold. . If it is greater than the current threshold, the main control unit 14 controls to turn on the first power switch 17, and the source Ϊ0 provides current to supply the system load 丨J. At the same time, the main control unit 14 controls the second power switch 18 to conduct positively. In addition to supplying the operating current to the system load 11, the power supply 10 supplies the charging current to the battery 12. If the current of the power source 10 is less than the current threshold value, the main control unit 14 determines that the current of the power source 1无法 cannot maintain the normal operation of the system, and then controls the first power switch 17 and the power switch 18 to be turned off. The power supply current detecting unit 15 and the battery current detecting unit 16 respectively detect the power supply current flowing through the power source 1 of the power converter 13 and the charging current for charging the battery 12, respectively, and as the battery 12 When the charging current of charging is less than its charging off current, and the supply current supplied to the power converter 13 is less than the maximum allowable supply current of the power source 10, the main control unit 14 determines that the charging of the battery 12 is completed, and controls the second power switch 18 to be turned off. Generally, the criterion for the battery 12 to be fully charged is that its charging current is less than a set value, that is, a wear current. However, in the battery management system 1 QQ 099133052 Form No. A0101 Page 8 / 19 pages 0992057819-0 [0020] 201214921, because the charging current supplied to the battery 12 will vary with the pure negative operating current The change occurs, and the material appears to be used. When the operating current required for the system load 11 is large, the charging current for charging the battery 12 is reduced, and the power current detecting unit 15 detects the flow through the power supply. The size of the supply current of the thin 3 is still the maximum supply current of the power supply. The battery current detecting unit (8) detects that the magnitude of the charging current is smaller than the off current, and the main control unit 14 determines that the charging of the battery 12 is completed, thereby turning off the Two power switches 18. However, the actual situation may be that the battery 12 has not been fully charged, but is misjudged due to an increase in the operating green power supplied to the system load 11. By setting the condition of ..... :丨. . . . , the above condition, when the battery current detecting unit 16 detects that the charging current of the battery 12 is smaller than the off current, the power supply current detecting unit 15 The detected supply current to the power converter 〖3 is smaller than the maximum allowable power supply current of the power supply 10, indicating that the operating current of the system load u is constant, but the charging current of the battery 12 is reduced. The supply current flowing through the power converter 13 is made small, thereby judging that the charging of the battery 12 is completed. Therefore, by setting the power supply current of the power supply 1 及 and the charging current of the battery 12 _ while satisfying the above conditions, it is possible to prevent erroneous determination. [0021] Further, when the main control unit 14 determines that the charging current supplied to the battery 12 is instantaneously reduced to zero by the detection result transmitted by the battery current detecting unit 16, the power consumption of the system load 11 at this time is determined. When the current is too large, and exceeds the maximum allowable supply current of the power source 10, the main control unit 14 controls the second power switch 18 to reversely conduct, and the battery 12 is no longer charged, but supplies power to the system load 11 (as shown by the dotted line in FIG. 1). section). Implementation When the system 099133052 Form No. 1010101 Page 9 / Total 19 Page 0992057819-0 201214921 [0022] [0024] [0025] [0026] Load 11 power consumption instantaneous pumping current material total input power capacity of the load When the current is supplemented from the existing battery 12, thereby reducing (four) human power _ cost 0 using the above battery management system 100, the power supply 1 〇 for the system load n operating power supply and charging the battery 12 to dynamically distribute the current, with the system negative, load The change in the current consumption of 11 and the charging current distributed to the battery 12 are also adjusted to achieve the use of maximizing the supply current of the power source 10. When the system load 11 is turned off, the full supply current of the power supply 1〇 is used to charge the battery 12 to achieve rapid charging of the battery 12. And the power supply structure is simple and the cost is low. In addition, when the system load u instantaneously increases the current consumption exceeding the load capacity of the total input power of the power source 10, the existing battery 12 can be supplemented with the system load 11 to supply power, so that the power input capacity can be improved, thereby reducing Total input power cost. Referring to Fig. 2, it is a flow chart of a method for realizing dynamic distribution of charging current by the Wei no domain towel power supply of the present invention. Step S20 ' The battery management system (10) is connected to the power source 1 (), and the power source current detecting and detecting unit 15 detects whether the power supply current provided by the power source 1G is greater than the current threshold value. If yes, the process proceeds to step S21; otherwise, the step is continued. The battery management system 1预先 presets a current threshold value, that is, the power supply current of the power supply 1〇 can satisfy the current of the system load and normal operation. If the current of the power supply ίο is less than the current threshold, the main control unit 14 determines that the current of the power supply 10 cannot maintain the normal operation of the system, and then controls the first power switch 17 to be turned off. 099133052 Form No. A0101 Page 19/19 pages 0992057819-0 201214921 Reward S21, if the detection result satisfies the current threshold, the main control unit 14 controls to turn on the first power switch 17, and simultaneously controls the second power switch μ. through. ο
GG
[0028]該第二電源開關18為一雙嚮導通開關，當該第二電源開 關18正嚮導通時，電源1〇提供的電流可為電池12充電； 當該第二電源開關18反嚮導通時，電池12可向系統負載 11供電；當該第二電源開關18雙向均不導通時，則該第 二電源開關18截止。 步驟S22，該主控制單元丨4控制流經電褥轉換器13的電源 10的供電電流分成兩部分，一部分為系統負載丨1供電， 剩餘部分為電池12充電’並且為電池12充電的電流隨著 系統負載11的耗電電流的變化而不斷麥化。 步驟S23 ’該電池電流偵測單元16偵測電池12的充電電流 是否小於其截止電流，若是，則進入步驟S24 ;否則，則 繼續該步驟。 广 步驟S24，該電源電流偵測單元15偵測提供至電源轉換器 13的供電電流是否小於電源1〇的最大允許供電電流，若 是，則進入步驟S25 ;否則，則繼續該步驟。 [0032] 步驟S25，該主控制單元14判斷電池12充電完成，控制該 第二電源開關18截止。 [0029] [0030] [0031] [0033] 099133052 通常，電池12充電充滿的判斷標準是其充電電流小於一 個設定值，即截止電流。但是，在該電池管理系統1 〇 〇中 ，由於供應至電池12的充電電流會隨著系統負載11的工 作電流的變化而隨之改變’則會出現這樣一種情況：當 表單編號A0101 第11頁/共19頁 0992057819-0 201214921 系統負載U所需的工作電流較大時，為電池12充電的充 電電流就會隨之減少，而電源電流_單元⑸貞測到提 供至電源轉換器13的供電電流的大小仍然為電源10的最 大允許供«流。此時，電池電流_單元16_該充 電電流的大小小於域止電流，主控制單元㈣會判斷 電池12充電完成，從而關閉第二電源開關18。但是，實 際的情況卻是電池12尚未完成«，而是由於供應至系 統負載11的工作電流增加而導致的誤判斷。而通過設置 上述條件，當電池電流_單元16_到的電奶的充 電電流的大小小_截止電流的同時，電源電流侦測單 元15偵測到提供至電_鋪13的供電電流的大小小於 電源10的最大允許供電電流，說明此時系統負載u的工 作電流大小不變，而是由於電池12的充電電流減小而導 致流經電源轉換器13的供電電流變小，從而判斷電池12 充電完成。因此，通過設置電源1〇的供電電流及電池12 的充電電流同時滿足上述條件，可以防止誤判斷的情況 [0034] [0035] 该電源實現充電電流動態分配的方法，當該電源電流偵 測單元15偵測電源1〇的供電電流的同時，還包括如下步 驟： 步驟S26，電池電流偵測單元16偵測電池12的充電電流是 否瞬間減少至零’若是’則進入步驟S 2 7 ;否則，則繼續 該步驟。 步驟S27 ’主控制單元14控制第二電源開關18反嚮導通， 電池12為系統負載11供電。 099133052 表單編號A0101 第12頁/共19頁 0992057819-0 [0036]The second power switch 18 is a double-conducting switch. When the second power switch 18 is conducting, the current supplied by the power source 1 可 can charge the battery 12; when the second power switch 18 is reverse-conducting The battery 12 can supply power to the system load 11; when the second power switch 18 does not conduct in both directions, the second power switch 18 is turned off. In step S22, the main control unit 丨4 controls the supply current of the power source 10 flowing through the power converter 13 to be divided into two parts, one part for the system load 丨1, the remaining part for charging the battery 12' and the current for charging the battery 12 The power consumption of the system load 11 changes and continues to be wheat. Step S23' The battery current detecting unit 16 detects whether the charging current of the battery 12 is less than its off current, and if so, proceeds to step S24; otherwise, the step continues. In step S24, the power source current detecting unit 15 detects whether the power supply current supplied to the power converter 13 is smaller than the maximum allowable power supply current of the power source 1 or, if yes, proceeds to step S25; otherwise, the process continues. [0032] Step S25, the main control unit 14 determines that the battery 12 is fully charged, and controls the second power switch 18 to be turned off. [0030] [0033] 099133052 Generally, the criterion for charging the battery 12 to be full is that its charging current is less than a set value, that is, an off current. However, in the battery management system 1 ,, since the charging current supplied to the battery 12 changes as the operating current of the system load 11 changes, a situation arises when the form number A0101 is page 11 / 19 pages 0992057819-0 201214921 When the operating current required for the system load U is large, the charging current for charging the battery 12 is reduced, and the power supply current_unit (5) detects the power supply to the power converter 13. The magnitude of the current is still the maximum allowable flow of the power supply 10. At this time, the battery current_unit 16_ is smaller than the domain stop current, and the main control unit (4) judges that the battery 12 is fully charged, thereby turning off the second power switch 18. However, the actual situation is that the battery 12 has not been completed «, but is misjudged due to an increase in the operating current supplied to the system load 11. By setting the above conditions, when the magnitude of the charging current of the battery current_cell 16_ to the electric milk is small_off current, the power source current detecting unit 15 detects that the supply current supplied to the electric shop 13 is smaller than the magnitude of the supply current. The maximum allowable supply current of the power source 10 indicates that the operating current of the system load u does not change at this time, but the supply current flowing through the power converter 13 becomes smaller due to the decrease of the charging current of the battery 12, thereby determining the charging of the battery 12. carry out. Therefore, by setting the power supply current of the power supply 1 及 and the charging current of the battery 12 while satisfying the above conditions, the erroneous determination can be prevented [0034] [0035] The power supply realizes the method of dynamically distributing the charging current, when the power supply current detecting unit 15, when detecting the power supply current of the power supply, the method further includes the following steps: Step S26, the battery current detecting unit 16 detects whether the charging current of the battery 12 is instantaneously reduced to zero 'if yes', then proceeds to step S 27; otherwise, Then continue with this step. Step S27' The main control unit 14 controls the second power switch 18 to reverse conduction, and the battery 12 supplies power to the system load 11. 099133052 Form No. A0101 Page 12 of 19 0992057819-0 [0036]
201214921 LU037J201214921 LU037J
[0038] Ο [0039][0038] [0039]
[0040] 當系統負載11瞬間的耗電電流過大時，並超過電源10的 最大供電的電流時，主控制單元14通過電池電流偵測單 元1 6傳送的偵測結果，判斷電池1 2的充電電流瞬間減小 ，並減少至零時，主控制單元14控制第二電源開關18反 嚮導通，電池12不再進行充電，而是向系統負載11供電 〇 使用上述充電電流動態分配的方法，電源10為系統負載 11工作供電和為電池12充電供電實行動態分配電流，隨 著系統負載11的耗電電流的改變，分配至電池12的充電 電流也隨之調整，實現電源丨0的供電電流最大化的使用 。當關閉系統負載11時，電源10的全部供電電流用於為 電池12充電，實現電池12的快速充電。且電源結構簡單 ，且成本較低。 另外一方面，當系統負載11瞬間耗電電流增加，超過電 源10的總輸入電源的帶載能力，可以從現有電池12補充 ，為系統負載11供電，這樣就能夠提高電源輸入帶載能 力，從而降低總輸入電源成本。 可以理解的是，對於本領域的普通技術人員來說，可以 根據本發明的技術構思做出其他各種相應的改變與變形 ，而所有這些改變與變形都應屬於本發明權利要求的保 護範圍。 【圖式簡單說明】 圖1為本發明的一個實施例的具有可動態分配充電電流的 電源的電池管理系統的方框圖。 099133052 表單編號Α0101 第13頁/共19頁 0992057819-0 [0041] 201214921 [0042]圖2為根據本發明的一個實施例的電源實現充電電流動態 分配的方法的流程圖。 【主要元件符號說明】 [0043] 電池管理系統：100 [0044] 電源：10 [0045] 系統負載：11 [0046] 電池：12 [0047] 電源轉換器：13 [0048] 主控制單元：14 [0049] 電源電流偵測單元： 15 [0050] 電池電流偵測單元： 16 [0051] 第一電源開關：1 7 [0052] 第二電源開關：18 099133052 表單編號A0101 第14頁/共19頁 0992057819-0[0040] When the power consumption current of the system load 11 is excessive, and exceeds the maximum power supply of the power source 10, the main control unit 14 determines the charging of the battery 12 by the detection result transmitted by the battery current detecting unit 16. When the current is instantaneously reduced and reduced to zero, the main control unit 14 controls the second power switch 18 to reversely conduct, and the battery 12 is no longer charged, but supplies power to the system load 11. The power supply is dynamically distributed using the above method. 10 dynamically supplies current for the system load 11 and supplies power to the battery 12, and as the power consumption of the system load 11 changes, the charging current distributed to the battery 12 is also adjusted to achieve the maximum supply current of the power supply 丨0. Use. When the system load 11 is turned off, the entire supply current of the power source 10 is used to charge the battery 12, enabling rapid charging of the battery 12. And the power supply structure is simple and the cost is low. On the other hand, when the system load 11 instantaneously increases the power consumption current and exceeds the load capacity of the total input power source of the power source 10, it can be supplemented from the existing battery 12 to supply the system load 11 so that the power input load capacity can be improved, thereby Reduce total input power costs. It is to be understood that those skilled in the art can make various other changes and modifications in accordance with the technical concept of the present invention, and all such changes and modifications are within the scope of the claims of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram of a battery management system having a power supply capable of dynamically distributing a charging current, in accordance with one embodiment of the present invention. 099133052 Form No. 101 0101 Page 13 of 19 0992057819-0 [0041] FIG. 2 is a flow chart of a method for realizing charging current dynamic allocation by a power supply according to an embodiment of the present invention. [Main component symbol description] [0043] Battery management system: 100 [0044] Power supply: 10 [0045] System load: 11 [0046] Battery: 12 [0047] Power converter: 13 [0048] Main control unit: 14 [ 0049] Supply current detection unit: 15 [0050] Battery current detection unit: 16 [0051] First power switch: 1 7 [0052] Second power switch: 18 099133052 Form No. A0101 Page 14 of 19 0992057819 -0