M414756 五、新型說明： 【新型所屬之技術領域】 本創作係有關於一種電池管理系統，特別係關於一種主 動平衡式雙向傳遞能量的電池單元平衡電路。 【先前技術】 多年以來’鎳鎘電池和隨後出現的鎳氫電池技術一直 佔據市場主導地位。鋰電池只是最近幾年才進入市場。然 而，憑藉其突出的優越性能，其市場份額迅速攀升。鋰電 池具有驚人的蓄能容量，但單個鋰電池的電壓一般介於 3.3〜3.6V之間，不足以滿足混合動力電機的需要。為增 加電流需將多個電池並聯起來，為獲得更高的電壓，則要 把夕個電池串聯起來。對於有多個電池串聯而言，模組化 、《構疋電、池官理的理想選擇。例如，將多達12個電池串 聯=來’組成31>128陣列中的一個電池塊（bl〇ck)。為了 補仏因祷電狀態不同而引起的電池電壓差異，在電池組和 電機驅動裝置之間可進__步連接—附有限流功能之直流_ 直流轉換器。 /、有夕電池單元的電池組（例如，鋰離子電池組）廣 泛地應用於各式各樣的電動工具中，以對電動主具供電1 電動工具包括：電動車和油電複合（hybrid)車，但不以 為限然而，電池組中每_電池單元會因老化程度不一 3 或電池溫度不同而產生差異，隨著充/放電次數的增加會導 致電池單元之間的電壓或容量的差異，進而造成電池單元 不平衡。 如果發生電池過熱、過度充電或過度放電，則離子電 池組容易加速老化，甚至會引起爆炸等意外。因此，需要 利用硬體或軟體保護來避免電池組的過度充電或過度放 電。此外，在多電池單元的電池組中，串聯連接的多電池 單TL的不平衡將導致電池組緩慢地、永久性老化，影響電 池組的使用壽命。因此，當電池組中之電池單元出現不平 衡狀況時，需對電池組中之電池單元進行平衡處理。 電池單元平衡技術可應用於電池充電過程、放電過程 从及閒置狀n巾。電池單元平觸常分為被動平衡式和主 動平衡式兩種。被動平衡式係將具錄高能量之電池單元 ^多餘能1:透過並聯祕之旁路電阻而雜掉。因此被動 平衡式過程巾所產生之熱能會影響電池㈣使用壽命並 々民系<8之效率。反之，主動平衡式係利用電感或變屢器 等此里轉換裝置’將—或多個電池單元的能量轉移到其他 電池單元中。 路100 °如圖1所示’傳統多個電池單元電池組之主動式平 衡電路100包括一變壓器1〇2、-開關104 (例如，一金 屬氧化物半導體場效電晶體_SFET))—電池組11〇， 料14/56 ^包含讀串軸接之電池單元卜⑽―n、多 ΐι〇— 112~η，其齡_接至對應之電池單元11〇、 —η之正極、—檢測單— 〜 單元106。 早疋(圖中未不)、以及-開關控制 次級ΓΙ’龍請具有—初級線圈和—次級線圈和一 ，及線圈。次級線圈的—端串聯一二極體⑽ 器所輪出之輪出雷4士變壓 ㈣電机進仃整流，次級線圈的兩端（其中— —^一極體1〇8)分別與開關112J〜112—η條 才稱。檢測單元檢測每一電池單元ιι〇卜 =並發送-平衡控制信號給開關控制單元《 ^制早回應平衡控制信號以控制開關ΐΐ2ι〜 2一η及1〇4的導通和關斷。 〜 開關控制單元1()6透過檢測每一電池單元⑽ ^之電鮮W从電轉元電料f訊，可;: 單元U°J〜u°-n是否處於平衡狀態。本上 技術人貝可理解，平衡狀態 t貝域 而定，如電、疋了根據不同的平衡指標 疋如電池早兀電壓、電荷狀態或 - 削-1〜11〇』之_電壓差 ；^池早元 為汽明钯目 °〜 '差或谷量差等等。 為簡月起見，以下將使崎—電池單元㈣ 電壓差作為平衡指標進行描述。 的 若檢測單元檢_電池單元⑽卜 個電池單元需要進行平衡時，例如，若』中任何一 右电池早7L 110—2的 5 電壓與复他雷 值可根據實㈣用$=之電壓差超過一預設值時（預設 或所需定，例如’工作所需之電能 斤=續的時間等），則電池單元11G_2即為需要平衡 關控制本檢測單元則產生， 據需求:=領域技術人員可理解，檢測單元可根 θ ^各種平衡條件，以判斷電池單元11GJ〜110 η 否^進仃平衡。接著，開馳鮮元伽 ㈣並導通開關•如此，一導通電流w入變壓= 的初級線圈，則來自電池組11〇之能量被轉移換成磁能， 並被儲存於變壓器⑽的磁芯中。然後，經過導通時間Ton 後’開關控制單元106關斷開關104，並控制與電池單元 110-2兩端相_之開關112—2、112—3導通，因此，儲存 在變壓器102的磁芯中之能量又被轉換成電荷，並經由次 級線圈和三極體⑽流人到電池單元11G_2 t。如上所 述，電池單元110」〜110』中的能量得以移動至電池單 元電壓較低之電池單元11(L2中，進而達到電池平衡。 傳統多個電池單元電池組之主動式平衡電路⑽雖然 能夠迅速地平衡具有低電池單元電壓之電池單元的能 量，但電路結構過於複雜，並需要多個開關，增加電路成 本。更重要的是’此電池單元平衡電路僅能將能量從電池 單元1HU〜11G—η傳遞至需要平衡的電池單元。因此， 其在電池充電的過程中平衡效果不明顯。換言之此傳統 對照先前技術之功效 本創作透猶能元件的雙向伽，可使得無論電池組處 於充電、放電或閒置狀態時’電池單元平衡電路皆可靈活地平 衡每-電池單元’並能有效避免在平衡過程巾產生大量的熱 能，並同时改善了系统的能量平衡。 【實施方式】 以下將對本創作的實施例給出詳細的說明。雖然本創 作將結合實麟，但應轉這 限定於這些實施例。相反’本創作意在涵蓋由後附申= 利範圍所界定的本創作精神和範_ 化、修改和均等物。 太名二下對本創作的詳細插述中，為了提供針對 本創作的=的理解，提供了大量的具體細節。然而，於 本技術領域巾科料知識麵_ 田 乙本創作同樣可以實施。在另外的—些實例中：對= 豕熟知的=法、程序、元件和電路未作詳細 凸顯本創作之主旨。 圖2,示林創作多㈣池單元電池組之 路200。多個電池單元電池組之主動式平衡電路包Γ 儲能元件302，其包含一第一續 數之第二線_ ，和多個具有相， 儲能元件302可為—變壓器。°心在仏例中’ 開關304與第—線圈3〇1的一端串聯連接，每一第二 M414756 線圈303一 1〜3〇3_n的其中一端分別串聯一開關312j〜 312_n。每一第二線圈303-^303^分別透過開關 〜312一η與電池組31〇中之n個彼此串聯的電池單元31〇丄 〜310_n並聯連接。為簡明起見，以下將使用每一電池單 元310一1〜310一n的電壓差作為平衡指標進行描述。M414756 V. New description: [New technical field] This creation is about a battery management system, especially for a battery balancing circuit with active balancing and bidirectional energy transfer. [Prior Art] Nickel-cadmium batteries and the subsequent nickel-hydrogen battery technology have dominated the market for many years. Lithium batteries have only entered the market in recent years. However, with its outstanding superior performance, its market share has risen rapidly. Lithium batteries have amazing storage capacity, but the voltage of a single lithium battery is generally between 3.3 and 3.6V, which is not enough to meet the needs of hybrid motors. In order to increase the current, multiple batteries are connected in parallel. To obtain a higher voltage, the batteries are connected in series. For the connection of multiple batteries, it is ideal for modularization and construction. For example, up to 12 cells are connected in series = to constitute a battery block (bl〇ck) in the array of 31 > 128. In order to compensate for the difference in battery voltage caused by the different state of the prayer, a dc-to-dc converter with a finite current function can be connected between the battery pack and the motor drive unit. /, battery packs with eve battery cells (for example, lithium-ion battery packs) are widely used in a variety of power tools to power electric masters. 1 Power tools include: electric vehicles and hybrids. The car, but not limited to it, however, each battery cell in the battery pack will be different due to different degrees of aging or battery temperature. As the number of charging/discharging times increases, the voltage or capacity difference between the battery cells will be caused. , which in turn causes the battery unit to be unbalanced. If the battery is overheated, overcharged, or overdischarged, the ion battery pack is prone to accelerated aging and may even cause an explosion or the like. Therefore, hardware or software protection is required to avoid overcharging or overdischarging of the battery pack. In addition, in the battery pack of a multi-battery unit, the imbalance of the multi-cell single TL connected in series will cause the battery pack to slowly and permanently age, affecting the service life of the battery pack. Therefore, when the battery cells in the battery pack are unbalanced, the battery cells in the battery pack need to be balanced. Battery cell balancing technology can be applied to the battery charging process, the discharge process, and the idle form. The battery unit is usually divided into passive balance and active balance. The passively balanced system will have a high-energy battery unit. ^Excessive energy 1: Miscellaneous through the parallel bypass resistor. Therefore, the thermal energy generated by the passively balanced process towel can affect the battery (4) service life and the efficiency of the system. Conversely, active balancing uses the conversion device of an inductor or a repeater to transfer energy from multiple battery cells to other battery cells. The circuit 100 ° as shown in FIG. 1 'the conventional multiple battery cell active balancing circuit 100 includes a transformer 1 〇 2, - the switch 104 (for example, a metal oxide semiconductor field effect transistor _SFET)) - battery Group 11〇, material 14/56^ contains the battery unit of the read string axis (10)-n, multi-ΐι〇-112~η, its age _ connected to the corresponding battery unit 11〇, —η positive pole,—test list — ~ Unit 106. Early 疋 (not shown in the figure), and - switch control secondary ΓΙ 龙 dragon has - primary coil and - secondary coil and one, and coil. The secondary coil is connected in series with a diode (10). The wheel is turned out and the 4th transformer is transformed. (4) The motor is rectified and rectified, and the two ends of the secondary coil (where - the first pole 1〇8) respectively It is called with the switches 112J~112-n. The detecting unit detects each battery unit and sends a balance control signal to the switch control unit to control the switching control signals to control the turning on and off of the switches ΐΐ2 to 2 η and 〇4. ~ Switch control unit 1 () 6 through the detection of each battery unit (10) ^ electric fresh W from the electric transfer element f, can be: whether the unit U ° J ~ u ° - n is in equilibrium. The technical person can understand that the balance state depends on the domain, such as electricity, 疋 according to different balance indicators, such as the battery early voltage, charge state or - cut -1 ~ 11 〇 _ voltage difference; ^ The pool early Yuan is the steam palladium mesh ~ ~ difference or valley difference and so on. For the sake of Jane's Moon, the following describes the voltage difference of the Saki-Battery Unit (4) as a balance indicator. If the detection unit detects _ battery unit (10), a battery unit needs to be balanced, for example, if any one of the right batteries is 7L 110-2, the voltage of 5 and the value of the remedy can be based on the actual (4) voltage difference of $= When a preset value is exceeded (preset or required, such as 'power required for work=continued time, etc.), the battery unit 11G_2 is generated by the detection unit that needs balance control. According to the demand: = field The skilled person can understand that the detecting unit can determine various balancing conditions of the battery unit 11GJ~110 η. Then, the fresh element gamma (4) is turned on and the switch is turned on. Thus, when the conduction current w is input into the primary coil of the variable voltage =, the energy from the battery pack 11 is transferred to magnetic energy and stored in the magnetic core of the transformer (10). . Then, after the on-time Ton, the switch control unit 106 turns off the switch 104, and controls the switches 112-2, 112-3 that are opposite to the battery unit 110-2. Therefore, it is stored in the core of the transformer 102. The energy is again converted into an electric charge and flows to the battery unit 11G_2t via the secondary coil and the triode (10). As described above, the energy in the battery cells 110" to 110" can be moved to the battery cells 11 (L2) having a lower battery cell voltage, thereby achieving battery balance. The active balancing circuit (10) of the conventional plurality of battery cells can be Quickly balance the energy of a battery unit with a low battery cell voltage, but the circuit structure is too complicated and requires multiple switches to increase the circuit cost. More importantly, 'this battery cell balancing circuit can only transfer energy from the battery unit 1HU~11G - η is transferred to the battery unit that needs to be balanced. Therefore, its balance effect is not obvious during the charging process of the battery. In other words, the conventional two-dimensional gamma of the device can be made to charge regardless of the power of the prior art. In the discharge or idle state, the battery cell balancing circuit can flexibly balance each battery cell and can effectively avoid generating a large amount of thermal energy in the balancing process towel, and at the same time improve the energy balance of the system. [Embodiment] The embodiment gives a detailed explanation. Although this creation will be combined with the real Lin, it should This is to be construed as limiting the scope of the invention. A lot of specific details are provided for the understanding of the definition of this creation. However, in the technical field of knowledge of the knowledge of the field of knowledge, Tian Yiben can also be implemented. In other examples: ==豕, well-known = method, The program, components and circuits do not highlight the purpose of this creation in detail. Figure 2, Schelling creates multiple (four) pool unit battery packs 200. Active balancing circuit packs for multiple battery cell packs Energy storage component 302, which contains a second line _ of the first continuation, and a plurality of phases, the energy storage element 302 can be a transformer. The center of the switch is connected to the end of the first coil 3〇1, each of which is connected in series. One end of the two M414756 coils 303-1 to 3〇3_n is respectively connected in series with a switch 312j~ 312_n. Each of the second coils 303-303 is respectively connected to the n of the battery pack 31〇 through the switches 312-? Battery unit 31〇丄~31 0_n is connected in parallel. For the sake of simplicity, the voltage difference of each of the battery cells 310-1 to 310-n will be described below as a balance indicator.
一開關控制邏輯單元306控制開關3〇4以及開關 312一 1〜312一 η的導通和關斷。在一實施例中開關3〇4以及 開關312—1〜312』可為半導體開關元件，例如，金屬氧 化物半導體場效電晶體（MOSFET)。 利用圖2所示本創作多個電池單元電池組之主動式平 電路200 ’可將電池組31〇或單—電池單元〜^ 的能量暫時儲存在儲能從3〇2上，然:後再根據需求將能 罝轉移到單-電池單元3Κ)」〜31G—η或電缝3ι〇上， 進而實現電池組31G與單-電池單元31(U〜3 处旦 的雙向轉移。 - —月匕里A switch control logic unit 306 controls the turn-on and turn-off of the switch 3〇4 and the switches 312-1 to 312-n. In one embodiment, the switch 3〇4 and the switches 312-1 to 312′′ may be semiconductor switching elements such as metal oxide semiconductor field effect transistors (MOSFETs). The active flat circuit 200' of the battery unit of the plurality of battery cells shown in FIG. 2 can temporarily store the energy of the battery pack 31〇 or the single-cell unit~^ in the energy storage from 3〇2, then: According to the demand, the energy can be transferred to the single-battery unit 3Κ)”~31G—η or the electric seam 3ι〇, thereby realizing the bidirectional transfer of the battery unit 31G and the single-battery unit 31 (U~3). in
以下將詳細描述在充電狀態下，圖3中所示本創作 個電池單元電驗之主動式平衡電路紅作過程。首 先，檢測單元（未示出）檢測每一電池單元31〇 1〜Η。打 的平衡狀悲。在一實施例中，假設電池單元31〇 2且^ 低容量或較高内阻，則在充電過程中，電池-^ 電池單元電麗會急速上升至高於其他電池單元此 充電過程中’需控制電池單元31G_2使之電 升速度不能過快。 當檢測到電池單元31〇一2與其他電池單元 高到超過一預設值（例如，一平衡指桿 性 η日你上隈）時，檢測i 兀則發出-平衡控制信號給開關控制邏輯單元獨。、然 9 ί關制邏輯單元3G6控制與電池單元31G-2串聯的 12—2閉合，以回應平衡控制信號。此時，電池單元 儲存ϋ的能量便透過其所對應之第二線圈3G3-2傳遞並 能元件302的磁芯上。接著，經過導通時間T， 二306將開關312_2關斷，並控制開關二 :進而儲存在磁芯上的能量會透過儲能元件的302之 弟H〇3_l〜303—η傳遞到整個電池組31〇。 為實現反驰式（Flyback)儲能元件之功能，開關Μ。 和:關304不能同時導通，且開關綱制 以確保不會產生電池單元綱的反向放電錢。^控制 j能量傳遞過程一直持續，即開關綱和開關312 2 持績父替地導通，直至所有電池單元31〇 1 : 到平衡狀態。 —-岣運 如上所述’由於電池單幻1G_2在充電過程中轉 部分能量至電池組31G中，因此，經過電池單元平衡後， 有效地抑制了電池單元31G_2之電池單元電壓的快速上 升0 本創作多織池單域触之主動式伟在電 池組3=放電時之工作過程如下描述。在一實施射，假 設電池單元310_2容量較低或具有較高内阻 程中’相較於其他電池單元，其電池單元3102^^ f塵會以更快的速度下降。因此，在放電過程中，電池 單凡31f~2㈣池單元電齡錄下降且電池單元310 2 之電池單元電齡低於其他電池單元。因此，在放電過程 中’需控㈣池單元31G-2使其電池單元麵下降速度不 能過快。 值2測到電池單元310_2與其他電池單元間的電麼差 則發出ΓΪ設值（例如’―平衡指標下限）時，檢測單元 Ρβ '衡控制信號給開關控制邏輯單元306。秋後， 制邏輯單元3G6控制開關3G4導通，以回應平衡控 “二此杜電池組310的能量則透過開關304轉移並 n 此70件302的磁芯上。然後，經過導通時間T〇n， 關控制邏輯單元遍將開關304 _，並控制與電池單 ^3/0-2串聯的開關312-2導通，因此’儲能元件302的 -上，電池組310所轉移的能量則透過開關312_2傳遞 =電池單元31G—2上。此外，為實現反馳式储能元件之功 月b主開關312一2和開關304不能同時導通，且開關312一2 的貝任週期需控制以確保不會產生電池單元的反向 放電電流。 _ 本領域技術人員可理解，在能量傳遞至電池單元 310—2之過程令，所有與其他電池單元串聯的開關皆必須 保持關斷，在不考慮變壓器302和開關3〇4以及開關312_1 〜312一η損耗的前提下，可認定從電池組13〇中所轉移的 能量皆全數被轉移至電池單元31〇_2中。上述能量傳遞過 程一直持續，直至電池單元310一2與其他電池單元間的電 壓差值足夠小，亦即，所有電池單元31〇_1〜31〇_η均已 達到平衡狀態。 因此，本創作透過儲能元件的雙向使用，使得在充電 過程中，一旦電池單元之電池單元電壓上升過快時，可將 此電池單元之多餘能量從此電池單元轉移至整個電池組 上。並在放電過程中，一旦電池單元之電池單元電壓下降 過快時，可將電池組上的部分能量轉移至單一特定電池單 11 ^14756 元中’以對其進行補充。因此’無論電池組處於充電、放 電或間置狀態時，電池單元平衡電路皆可靈活地平衡每一 電池單元’並能有效避免在平衡過程中產生大量的熱能。 上文具體實施方式和附圖僅為本創作之常用實施The active balancing circuit red working process of the present battery cell electrogram shown in Fig. 3 in the state of charge will be described in detail below. First, a detecting unit (not shown) detects each of the battery cells 31 〇 1 to Η. The balance of the fight is sad. In an embodiment, assuming that the battery unit 31〇2 and the low capacity or the higher internal resistance, during the charging process, the battery-^ battery unit will rapidly rise above the other battery units during the charging process. The battery unit 31G_2 does not allow the electrical rise speed to be too fast. When it is detected that the battery unit 31〇2 and other battery units are higher than a preset value (for example, a balance fingertip η day you are up), the detection i 发出 sends a balance control signal to the switch control logic unit. alone. Then, the logic unit 3G6 controls the 12-2 connection in series with the battery unit 31G-2 to respond to the balance control signal. At this time, the energy stored in the battery unit is transferred to the core of the component 302 through the corresponding second coil 3G3-2. Then, after the on-time T, the second switch 306 turns off the switch 312_2, and controls the switch two: the energy stored on the magnetic core is transmitted to the entire battery pack 31 through the younger brothers H〇3_l~303-η of the energy storage element 302. Hey. In order to realize the function of the Flyback energy storage element, the switch Μ. And: Off 304 can not be turned on at the same time, and the switch system to ensure that the battery unit's reverse discharge money will not be generated. ^ Control j The energy transfer process continues until the switch and the switch 312 2 are turned on until all the cells 31 〇 1 : are in equilibrium. - As described above, since the battery unit 1G_2 transfers part of the energy to the battery pack 31G during the charging process, the battery unit voltage of the battery unit 31G_2 is effectively suppressed by the battery unit balance. The working process of creating a multi-woven pool single-domain touch active in the battery pack 3 = discharge is described as follows. In one implementation, it is assumed that the battery unit 310_2 has a lower capacity or a higher internal resistance, and the battery unit 3102^^f dust will drop at a faster rate than other battery units. Therefore, during the discharge process, the battery unit of the battery unit 31f~2(4) drops and the battery unit of the battery unit 310 2 is lower than other battery units. Therefore, during the discharge process, it is necessary to control (4) the cell unit 31G-2 so that the cell surface falling speed cannot be too fast. When the value 2 detects that the difference between the battery unit 310_2 and the other battery unit is a set value (e.g., 'the lower limit of the balance indicator'), the detection unit Ρβ's the control signal to the switch control logic unit 306. After the autumn, the logic unit 3G6 controls the switch 3G4 to be turned on in response to the balance control. "The energy of the battery pack 310 is transferred through the switch 304 and the core of the 70 piece 302. Then, after the conduction time T〇n, The off control logic unit turns on the switch 304_ and controls the switch 312-2 connected in series with the battery unit ^3/0-2, so that the energy transferred by the battery pack 310 on the energy storage element 302 passes through the switch 312_2 Transfer = battery unit 31G-2. In addition, in order to realize the power cycle b of the flyback energy storage element, the main switch 312-2 and the switch 304 cannot be simultaneously turned on, and the bay cycle of the switch 312-2 needs to be controlled to ensure that it will not be The reverse discharge current of the battery unit is generated. _ Those skilled in the art can understand that in the process of energy transfer to the battery unit 310-2, all switches connected in series with other battery units must be kept off, regardless of the transformer 302 and Under the premise that the switch 3〇4 and the switches 312_1 312 312 are η loss, it can be determined that all the energy transferred from the battery pack 13〇 is transferred to the battery unit 31〇_2. The above energy transfer process continues until the battery The voltage difference between the cells 310-2 and the other battery cells is sufficiently small, that is, all the battery cells 31〇_1~31〇_η have reached an equilibrium state. Therefore, the present invention enables the two-way use of the energy storage components. During the charging process, once the battery cell voltage of the battery unit rises too fast, the excess energy of the battery unit can be transferred from the battery unit to the entire battery pack, and during the discharging process, once the battery cell voltage of the battery unit drops. When you are fast, you can transfer some of the energy on the battery pack to a single specific battery unit of 11 ^ 14756 yuan to supplement it. Therefore, the battery cell balancing circuit can be used regardless of whether the battery pack is in charge, discharge or interposition. Flexibly balance each battery unit' and effectively avoid generating a large amount of thermal energy during the balancing process. The above detailed description and drawings are only common implementations of this creation.
例。顯然，在不脫離後附申請專利範圍所界定的本創作精 神和保護範圍的前提下可以有各種增補、修改和替換。本 術員域中具有通常知識者應該理解，本創作在實際應用 =可根據具體的環境和工作要求在不背離創作準則的前 j下在形式、結構、佈局、比例、材料、元素、元件及其 与方面有所變化。因此，在此披露之實施例伽於說明而 非限本創作之範®由後附巾料職®及其合法均等 物界疋，而不限於此前之描述。example. Obviously, there may be various additions, modifications and substitutions without departing from the spirit of the creation and scope of protection defined by the scope of the appended patent application. Those with ordinary knowledge in the field of the technician should understand that the creation of the creation in the actual application = can be based on the specific environment and work requirements without departing from the creative criteria in form, structure, layout, proportion, materials, elements, components and It has changed in terms of aspects. Accordingly, the embodiments disclosed herein are intended to be illustrative, and not limited to the scope of the present invention, and are not limited to the foregoing description.
本文使用的術語與措辭是描述性而非局限性之術語，在 插==術語和措辭時，並未意欲排除其他與這裏所揭^示和 的' i 2特徵的—部分)相似的等同物，且應該意識到 還專利範圍内’本創作可能有多種修改。本創作 蓋‘二修改、變動及替換。中請專利範圍應涵 12 ΓΜ414756 【圖式簡單說明】 圖1傳統主動式多電池單元電池組平衡電路。 圖2本創作一實施例主動式多電池單元電池組平衡電路 【主要元件符號說明】 100 :傳統多個電池單元電池組之主動式平衡電路 102 :變壓器 104 :開關 106 :開關控制單元 108 :二極體 110 :電池組 1101〜110_n :電池單元 112_1 〜112—η:開關 200 :本創作多個電池單元電池組之主動式平衡電路 301 :第一線圈 302 :儲能元件/變壓器 303一 1〜303一η :第二線圈 304 :開關 306 :開關控制邏輯單元 310 :電池組 310一1〜310jq :電池單元 312_1 〜312_n :開關 13The terms and expressions used herein are terms of description rather than limitation, and are not intended to exclude other equivalents of the 'i 2 features' as described herein. And should be aware that there are many modifications to this creation within the scope of the patent. This creation covers ‘two modifications, changes and replacements. The patent scope should be 12 ΓΜ 414756 [Simple description of the diagram] Figure 1 Traditional active multi-cell battery pack balancing circuit. 2 is an active multi-battery battery pack balancing circuit of the present embodiment [main component symbol description] 100: active balancing circuit 102 of a plurality of conventional battery cell batteries: transformer 104: switch 106: switch control unit 108: two The polar body 110: the battery packs 1101 to 110_n: the battery cells 112_1 to 112-n: the switch 200: the active balancing circuit 301 of the plurality of battery cells of the present invention: the first coil 302: the energy storage component/transformer 303-1 303 η : second coil 304 : switch 306 : switch control logic unit 310 : battery pack 310 - 1 to 310jq : battery unit 312_1 ~ 312_n : switch 13