201238206 六、發明說明： 【發明所屬之技術領域】 本發明係一種電池並聯連接裝置、其包括：二電池並 接電路的中間連接有電壓平衡電路；電壓平衡電路具 接點特徵、其中第1端與第2端連接在二只電池並聯的中^ 第3端為中點端連接在外正電壓端或外負電壓端、在其B 或放電下消除電池環流產生、而提高其電池充電或放雷 率、減少其環流損失。 & 【先前技術】 如圖1所示，為習知電池並聯連接電路、其有以 1·電池EA肖電池EB並聯、在其進行充電時、其電池EA、輿雷 池EB均會產生環流損耗。 與電 2. 上L之連接可知、當二並聯電池放電於負载時、A並躺- 電池之間亦會產生環流、而造成損耗。 八 一 3. 自連f可知、當二並聯電池在無負載開路時、1並聯 二，之間亦會產生環流、而將電池所蓄存之電能;ί聯 而造成應用之不便。 电月匕耗盡、 【發明内容】 或对权環流損失： 本發明有!^之=除二魏之環流損失。 h ί S以?!串聯連接之順向電壓降與 反並聯連接於之接之順向電壓降、極性相 行二電池因電壓不同而電池不產生環流、以執 而並聯時、因二極體之順向電壓降 201238206 之關係、而消除二電池之環流損失。 2.首創將第1 -極_陰極端與第2二極體的陽極端與第3 二極體的陽極端與第4二極體驗極端連接 1電 充電或放電電路之電性連接點。 又巧一 1；也 3十發：實施，，極體為PN型二極體或蕭特基二極體 (schottky chode)或齊納二極體（Zener di〇des )或變容二 極體（Varactor diodes )或隧道二極體（Tunnd201238206 VI. Description of the Invention: [Technical Field] The present invention relates to a battery parallel connection device, which comprises: a voltage balancing circuit connected in the middle of a parallel connection circuit of two batteries; a voltage balancing circuit with a contact feature, wherein the first end Connected to the 2nd end in the middle of the parallel connection of the two batteries. The third end is connected to the external positive voltage terminal or the external negative voltage terminal at the midpoint end, and eliminates the battery circulation generated under B or discharge, thereby improving the battery charging or lightning discharge. Rate and reduce its circulation loss. & [Prior Art] As shown in Fig. 1, in the case of a conventional battery parallel connection circuit, which has a battery EA parallel battery EB in parallel, when it is charged, its battery EA, thunder pool EB will generate loop loss. . Connection with the electric 2. The connection between L and L can be seen when the two parallel batteries are discharged to the load, and A is lying down - the battery also generates circulation and causes loss. Bayi 1. It can be known from the connection f that when the two parallel batteries are open at no load and 1 is connected in parallel, the circulating current will also be generated, and the electric energy stored in the battery will be stored; The electric crescent is exhausted, [invention content] or the loss of the right circulation: The present invention has a loop loss of the second Wei. h ί S is connected to the forward voltage drop of the series connection and the parallel voltage drop connected to the anti-parallel connection. The polarity of the phase two battery is different depending on the voltage, and the battery does not generate a circulating current, and when connected in parallel, the diode The forward voltage drops the relationship of 201238206, and eliminates the circulation loss of the two batteries. 2. The first connection between the anode end of the 1st pole-cathode and the 2nd diode and the anode end of the 3rd diode and the 4th diode are connected to the electrical connection point of the electric charging or discharging circuit. Another clever one; also three ten: implementation, the polar body is a PN-type diode or Schottky chode or Zener di〇des or a varactor (Varactor diodes) or tunnel diodes (Tunnd
Transient vCtage suppression diodl ) 等。 4·，發明電池並聯連接裝置所指之電池係為二次電池 jSecondair Cells)、亦就是所有之二次電池皆可應用本 發明電池並聯連接裝置。 【實施方式】 如圖2所示、為本發明電池並聯連接裝置之第〗實施例、 1圖中可知、第1電池E1之正電壓端接到第i二極體D1之 ^端、第1二極體D1之陰極端與第2二極體D2之陽極端 連接、第2二極體D2之陰極端連接到第2電池E2之正電壓 ，；第1電池E1之正電壓端接到第3二極體⑽之陰極端、第 3 —極體D3之陽極端與第4二極體Μ之陰極端連接、第4 二極體D4之陽極端連接到第2電池E2之正電壓端；第i二極 體D1之陽極端與第3二極體D3之陰極 為 衡電路(V〇Uage Balance Circuit，VBC)之；!：為以 f體D2之陰極端與第4二極體D4之陽極端連接稱為電壓 w，電路之第2端；第1二極體之陰極端與第2二極體於 ^陽極端與第3二極體D3之陽極端與第4二極體μ之陰極 鸲連接、稱為電壓平衡電路之第3端、連接外正電壓端咫。 如圖2所示、本發明之充電動作原理為：電流自外正電壓 =VP、經第3 一極體D3之陽極端、到第3二極體D3之陰極 端到第1電池E1之正電麼端、到第！電池E1之負電壓端、 201238206 回到第1電池El之外負電壓端VN.另一 =經第2二極體D2之陽極端’ ^自端 到f 2電池E2之正電壓端、到第2電池端、 到之外負電壓端VN、而完成充電程序 j 2所示、本發明之放電動作原理為：第 ，壓二之電流經第1二極體D1之陽極端 二 、之外正電壓端vp、供應設定負载（圖=1 :)、回到第1電池E1之外負電壓端圖了3 一電流自第2電池E2之正電壓端 巧 D4之陽，、到第4二極體D4之陰極端、到外正體 供應设疋負載（圖中無表示）、回到第2電池E2之 : 端VN與第2電池E2之負電壓端、而完成放電程序。、電壓 如圖2所示、第1二極體D1谓極端與第 電壓端連接、第i二極體D1之陰極端與第2二極體g = 極端連接、第2二極體D2之陰極端連接第2電池E ^ 壓端、利用第1二極體D1與第2二極體D2之順=電 而消除二電池之環流產生、其動作顧為：當 婆降、 兩端之電壓可能大於或小於第2電池£2兩端之電壓，若1 電池E1兩端之電壓大於第2電池E2兩端之電壓，，1 接將其二電池並聯’必會產生環流而造成觀短路，若2 電池E1兩端之電壓大於第2電池E2兩端之電 ，1 特，此時利用第1二極體D1之順向電壓降〇. 7伏特釦 二極體D2之順向電壓降〇. 7伏特’合計h 4 匕= 有第1二極體D1和第2二極體D2之順向電壓降為丨 端與第2電池E2兩端之電壓相 專，此時不產生裱流，若第丨電池E1與第2電池 電壓相差大、則可採用第1二極體D1為二只或多σ二極ς 一單方向導電串聯連接替代或第2二極體D2為二 極體同一單方向導電串聯連接替代、而不自限；若¥ i ϋTransient vCtage suppression diodl ) and so on. 4. The battery referred to in the invention battery parallel connection device is a secondary battery jSecondair Cells, that is, all of the secondary batteries can be applied with the battery parallel connection device of the present invention. [Embodiment] As shown in Fig. 2, in the first embodiment of the battery parallel connection device of the present invention, it can be seen that the positive voltage terminal of the first battery E1 is connected to the end of the ith diode D1, and the first The cathode end of the diode D1 is connected to the anode end of the second diode D2, the cathode end of the second diode D2 is connected to the positive voltage of the second battery E2, and the positive voltage terminal of the first battery E1 is connected to the first The cathode end of the 3 diode (10), the anode end of the 3rd body D3 are connected to the cathode end of the 4th diode body, and the anode end of the 4th diode D4 is connected to the positive voltage terminal of the 2nd battery E2; The anode end of the ith diode D1 and the cathode of the third diode D3 are V电路Uage Balance Circuit (VBC); !: is the cathode end of the f body D2 and the fourth diode D4 The anode terminal is connected as a voltage w, the second end of the circuit; the cathode end of the first diode and the second diode are at the anode end and the anode end of the third diode D3 and the fourth diode The cathode 鸲 connection, called the third end of the voltage balancing circuit, and the external positive voltage terminal 连接. As shown in FIG. 2, the charging operation principle of the present invention is: current from external positive voltage = VP, through the anode end of the third body D3, to the cathode end of the third diode D3 to the first battery E1 Electric, to the first! The negative voltage terminal of the battery E1, 201238206 returns to the negative voltage terminal VN of the first battery El. The other = the anode terminal of the second diode D2 ' ^ self-end to the positive voltage terminal of the f 2 battery E2, to the first 2, the battery terminal, the negative voltage terminal VN, and the completion of the charging procedure j 2, the discharge operation principle of the present invention is: first, the current of the second voltage is passed through the anode end of the first diode D1 Voltage terminal vp, supply set load (figure = 1:), return to the first battery E1, the negative voltage terminal diagram 3, a current from the second battery E2, the positive voltage terminal D4 of the yang, to the 4th pole The cathode terminal of the body D4 and the external body are supplied with a load (not shown), and return to the negative terminal of the second battery E2: the terminal VN and the second battery E2 to complete the discharge process. The voltage is as shown in FIG. 2, the first diode D1 is connected to the terminal of the voltage terminal, the cathode terminal of the ith diode D1 is connected to the second diode g = the terminal is connected, and the second diode D2 is connected to the cathode. Extremely connected to the second battery E ^ terminal, using the first diode D1 and the second diode D2 to eliminate the generation of the circulation of the two batteries, the operation of which is: when the mother drops, the voltage at both ends may If the voltage across the second battery is higher than or equal to the voltage across the second battery, if the voltage across the battery E1 is greater than the voltage across the second battery E2, the connection of the two batteries in parallel will cause a loop and cause a short circuit. 2 The voltage across the battery E1 is greater than the power at the two ends of the second battery E2, 1 special. At this time, the forward voltage drop of the first diode D1 is used. The forward voltage drop of the 7 volt deduction diode D2 is 〇. 7 volts' total h 4 匕 = the forward voltage drop of the first diode D1 and the second diode D2 is the same as the voltage across the second battery E2, and no turbulence occurs at this time. If the voltage difference between the second battery E1 and the second battery is large, the first diode D1 may be two or more sigma diodes, or a single-directional conductive series connection may be used, or the second diode D2 may be a diode. The same single direction conductive series connection is substituted, but not self-limiting; if ¥ i ϋ
El與第2電池Ε2之充電或放電電流大、則第/二極體D1可 201238206 |采：二只或多只二極體同一單方向導 if It?D3 ^ 3 ιϊϊ 3 連接第2電池E2之正電壓端、利用ϊ 與第4二極體D4之軸電雜、而消除二電I ίL作原理為:當第2電池E2兩端之電壓大 ‘D3輿筮4人兩：之電壓為1,4伏特’同樣可以第3二極 =3與第4_極體D4之順向電壓降合計為！ 4伏 兩端之電_第1電池E1兩端之電壓ί其不 生％流，若第2電池Ε2兩端之電壓與第丨電 . * a ^ D3 4 Α 2方向導電串聯連接替代或第4二極體D4為二只或多。二 ，體同-單方向導電串聯連接替代、而不自限第^ ί 'M，J"3 i恭“衫—極體R —卓方向導電並聯連接替代.若第 體5=-2 口電池E2之峨放電電流大、則第4二極 H可㈣—只或乡只二極朗—單方向導電並聯連接替 ^右第1電池E1兩端之電壓與第2電池E2兩端之電壓相差 ^充電ϊί電電流大、則第卜第2、第3、第4二極體可 S二i夕只二=同—單方向導電並聯連接、再將並聯 後之一極體以二只或多只同—單方向導電串聯連接替代。 =3所示、為本發明電池並聯連接裝置之第2實施例、 ^圖中可知、第1電池E1可串聯第i多只電池趣、第2 電，E2亦可串聯第2多只電池E2N、其第i電池m串聯第El and the second battery Ε2 charge or discharge current is large, then the second / second pole D1 can be 201238206 | mining: two or more diodes in the same single direction if it? D3 ^ 3 ιϊϊ 3 connected to the second battery E2 The positive voltage terminal uses ϊ and the fourth diode D4 to electrically dissipate and eliminate the second power. The principle is as follows: when the voltage across the second battery E2 is large, 'D3舆筮4 people two: the voltage is 1,4 volts can also be combined with the forward voltage drop of the 3rd diode = 3 and the 4th pole D4! The power at both ends of the volts _ the voltage across the first battery E1 ί does not generate a % flow, if the voltage across the second battery Ε 2 is the same as the 丨 .. * a ^ D3 4 Α 2 direction conductive series connection replacement or 4 diode D4 is two or more. Second, the same - single-directional conductive series connection replacement, but not self-limiting ^ ί 'M, J " 3 i Christine "shirt - polar body R - Zhuo direction conductive parallel connection replacement. If the body 5 = -2 battery After E2, the discharge current is large, then the 4th pole H can be (4) - only the township is only 2 poles - the single direction conductive parallel connection is used. The voltage across the first battery E1 is different from the voltage across the second battery E2. ^Charging ϊί The electric current is large, then the second, third, and fourth diodes of the second can be S2, only two = the same - one-way conductive parallel connection, and then one or more parallel poles in two or more The same as the one-way conductive series connection, which is shown in Fig. 3, is the second embodiment of the battery parallel connection device of the present invention, and it can be seen that the first battery E1 can be connected in series with the i-th battery and the second battery. E2 can also be connected in series with the second battery E2N, its i-th battery m series
Lm池Γ與第2電池E2串聯第2多只電池腦二組 ^聯連接、其二組之間連接有電壓平衡電路、其間之電 衡電路原理與圖2所述之電壓平衡電路原理相同、而不資述。 如圖4所示、為本發明電池並聯連接裳置之第3實施例、 201238206 iVJt ； Ξ 3 D3 極體D1與第2 m?第2電池E2之順向電壓降為第1二 之順向電壓降、其第2電池E2到 之降、其電壓平衡電路原理與圖^ 自不將池=連接裝置之第4實施例、 位置、其第2電池E2到第第4二極體D4對調 極體D4鱼第3 =人電池E1之順向電壓降為第4二 3電池^之順向電壓降、其第1電池E1到 第?t== 連f裝置之第5實施例、 壓端，到外正電壓端VP、第1電312負電電== 之二m端*v二極刪之陰軸與第2二極 池E2之負電麗端.第】雷冰ρι ?之哈極&連接到第2電 _極端第，到 接、稱為電壓平衡電㈣D3之陰極端連 筮4-托触= 第端、第2二極體D2之陰極端虚 第1 :極俨D1之5極端連接、稱為電壓平衡電路之第2端: 極體G之^極ΪΠί與ί^_2之陽極端與第3二 平衡電接、稱_ 點··電流自外正電屋 到第】二二，端 之電為、第2電池E2之負電屢端到第4二極體以之陽2 201238206 極端、到第4二極體D4之陰極端、回到外負電壓端VN、而 完成充電程序。 如，6所示、本發明之放電動作原理為：第】電池El之 士電壓端之電流經外正電壓端vp、供應設定負載（圖中無表 不）、到外負電壓端VN、經第3二極體D3之陽極端、到第3 =極體D3之陰極端、回到第1電池E1之負電壓端；另一電 $自第2電池E2之正電壓端、經外正電壓端vp，供應設定負 載（圖中無表示）、到外負電壓端VN、經第2二極體D2之陽 ，端、到第2二極體D2之陰極端、回到第2電池E2之負電 壓端、而完成放電程序。 厭山、f 6所不'第1二極體D1之陽極與第1電池E1之負電 娃ΐ拉接妨第1二極體D1之陰極端與第2二極體D2之陽極 ^ ί 2二極體D2之陰極端連接第2電池E2之負電壓 ^ 1 一極體D1與第2二極體D2之順向電壓降、可 ίΪ間之_產生；若第1電池E1與第2電池E2 大、則可採用第1二極體di為二只或多只二 向導”聯連接替代、第2二極體D2為二只或 1 方向導電串聯連接替代、而不自限;若第 體_電池E2之充電或放電電流大、則第1二極 代.gif#:二或多只二極體同一單方向導電並聯連接替 第2二充電或放電電流大、則 連接替代.第I； 極體同—單方向導電並聯 端連接、第1~^體D3之陰極端與第1電池ei之負電壓 連接、第4 1 D3之陽極端與第4二極體D4之陰極端 二電池之間之環流/生&極f*D4之軸糕降、可消除 電池E2兩端之電壓相差大右第目/電池E1兩端之電壓與第2 或多只二極體同Hi貝^可採用第3二極㈣為二只The Lm cell is connected in series with the second battery E2, and the second battery cell is connected in two groups, and a voltage balance circuit is connected between the two groups. The principle of the voltage balance circuit is the same as that of the voltage balance circuit described in FIG. Not to mention. As shown in FIG. 4, the third embodiment of the battery of the present invention is connected in parallel, 201238206 iVJt; the forward voltage drop of the D3 D3 polar body D1 and the second m? second battery E2 is the first two-way forward direction. The voltage drop, the second battery E2 drop, the principle of the voltage balance circuit and the figure ^ the fourth embodiment of the cell = connection device, the position, the second battery E2 to the fourth diode D4 Body D4 fish 3 = the forward voltage drop of the human battery E1 is the forward voltage drop of the 4th 2nd battery, the first battery E1 to the t=t== the fifth embodiment of the device, the pressure end, To the external positive voltage terminal VP, the first electric 312 negative electric power == two m end * v two poles cut the negative axis and the second two pole pool E2 negative electric end. The first] thunder ice ρι? Connected to the second electric _ extreme, connected to the terminal, called the voltage balance electric (four) D3 cathode end 筮 托 托 托 托 托 = = = = = = = = = = = = 阴极 阴极 阴极 阴极 阴极 阴极 阴极 阴极 阴极 阴极 阴极 阴极 阴极 阴极 阴极 阴极 阴极 阴极 阴极 阴极 极端 极端The second end of the connection, called the voltage balance circuit: the anode of the polar body G and the anode end of the ί^_2 and the third balanced electric connection, said _ point · current from the external positive electric house to the second] The power of the terminal is the negative terminal of the second battery E2. A fourth diode to the positive terminal 2201238206, the fourth diode D4 cathode terminal, the negative end of the outer back VN, the charging process is completed. For example, as shown in FIG. 6, the discharge operation principle of the present invention is as follows: the current of the voltage of the battery of El's battery is passed through the external positive voltage terminal vp, the supply of the set load (not shown in the figure), the external negative voltage terminal VN, The anode end of the third diode D3, to the cathode end of the third body D3, returns to the negative voltage terminal of the first battery E1; the other electricity is from the positive voltage terminal of the second battery E2, and the external positive voltage The terminal vp supplies a set load (not shown), goes to the external negative voltage terminal VN, passes through the anode of the second diode D2, ends to the cathode terminal of the second diode D2, and returns to the second battery E2. The negative voltage terminal completes the discharge process. The anode of the first diode P1 and the negative electrode of the first battery E1 are connected to the anode of the first diode D1 and the anode of the second diode D2 ^ ί 2 The cathode terminal of the polar body D2 is connected to the negative voltage of the second battery E2. ^ 1 The forward voltage drop of the one-pole body D1 and the second diode D2 can be generated. If the first battery E1 and the second battery E2 are Large, the first diode di can be used as two or more two-guided "connection" replacement, the second diode D2 is replaced by two or one-direction conductive series connection, without self-limiting; Battery E2 charging or discharging current is large, then the first two poles. gif #: two or more diodes in the same single direction conductive parallel connection for the second two charging or discharge current is large, then the connection is replaced. I; The same as the single-directional conductive parallel connection, the cathode end of the first to the D3 is connected to the negative voltage of the first battery ei, the anode end of the 4 1 D3 and the cathode terminal of the 4th diode D4 Circulation / raw & extreme f * D4 shaft cake drop, can eliminate the voltage difference between the two ends of the battery E2 large right head / battery E1 voltage and the second or more diodes with Hi be ^ can be used 3rd pole (4) Two
為二只或多只二極;接替代、第4二極體W 體Π早方向導電串聯連接替代、而不自 201238206 P艮；若第1電池El與第2電池E2之充電或放電電流大、則 第3 —極體D3可採用二只或多只二極體同一單方向導電並聯 連接替代;若第1電池E1與第2電池E2之充電或放電電流 大、則第4二極體D4可採用二只或多只二極體同一單方向導 電並聯連接替代;若第1電池E1兩端之電壓與第2電池E2 兩端之電壓相差大與充電或放電電流大、則第丨、第2、第3、 第4二極體可採用二只或多只二極體同一單方向導電並聯連 接、再將並聯後之二極體以二只或多只同一單方向導電串聯 連接替代。 如圖7所示、為本發明電池並聯連接裝置之第6實施例、 自圖中可知、第1電池E1可串聯第1多只電池mN、第2電 池E2亦可串聯第2多只電池E2N、其第1電池E1串聯第i 夕電池E1N與第2電池E2串聯第2多只電池E2N二組並 聯連接、其一組之間連接有電壓平衡電路、而電壓平衡電路 原理與圖6所述之電壓平衡電路原理相同、而不贅述。 如圖8所示、為本發明電池並聯連接裴置之第7實施例、 自圖中可知、將圖6之第1二極體D1與第3二極體D3對調 位置、其第1電池E1到第2電池E2之順向電壓降為第！二 第2二極體D2之順向電壓降、其第池£2到第 如圖9所不、為本發明電池並聯連接裝置 圖中可知、將圖6之第2二極體D2與第4二搞雜Μ制^周位 LfJ2電池Ε2到第1電池E1之順向^為第二極 向電壓降、其電壓平衡電路原理與圖M目同、述。 【圖式簡單說明】 圖1為習知電池並聯連接電路。 201238206 圖2為本發明電池並聯連接裝置之第1實施例。 圖3為本發明電池並聯連接裝置之第2實施例。 圖4為本發明電池並聯連接裝置之第3實施例。 圖5為本發明電池並聯連接裝置之第4實施例。 圖6為本發明電池並聯連接裝置之第5實施例。 圖7為本發明電池並聯連接裝置之第6實施例。 圖8為本發明電池並聯連接裝置之第7實施例。 圖9為本發明電池並聯連接裝置之第8實施例。 【主要元件符號說明】 EA電池。 EB電池。 E1第1電池。 E2第1電池。 E1N 第1多只電池。 E2N 第2多只電池。 D1 第1二極體。 D2 第2二極體。 D3 第3二極體。 D4 第4二極體。 VP 外正電壓端。 VN 外負電壓端。 10It is two or more diodes; the replacement, the fourth diode W body is replaced by an early conductive series connection instead of the 201238206 P艮; if the first battery El and the second battery E2 have a large charging or discharging current Then, the third body D3 can be replaced by two or more diodes in the same single direction conductive parallel connection; if the first battery E1 and the second battery E2 have large charging or discharging current, the fourth diode D4 Two or more diodes can be replaced by the same single-directional conductive parallel connection; if the voltage across the first battery E1 is different from the voltage across the second battery E2 and the charging or discharging current is large, then the third and the third 2. The third and fourth diodes may be connected in parallel with one or more diodes in the same direction, and then the parallel diodes may be replaced by two or more single-directional conductive series connections. As shown in FIG. 7, the sixth embodiment of the battery parallel connection device of the present invention can be seen from the figure. The first battery E1 can be connected in series with the first plurality of batteries mN, and the second battery E2 can be connected in series with the second plurality of batteries E2N. The first battery E1 is connected in series with the second battery E1N and the second battery E2 is connected in series. The second plurality of batteries E2N are connected in parallel, and a voltage balance circuit is connected between the groups. The principle of the voltage balance circuit is as shown in FIG. The principle of the voltage balance circuit is the same and will not be described. As shown in Fig. 8, the seventh embodiment of the battery parallel connection device of the present invention, as shown in the figure, the first diode E1 and the third diode D3 of Fig. 6 are aligned, and the first battery E1 is shown. The forward voltage drop to the second battery E2 is the first! The forward voltage drop of the second diode D2, the second cell of the second layer is not shown in FIG. 9, and the second parallel body D2 of FIG. 6 is shown in FIG. The second is to make a miscellaneous system. The circumferential position of the LfJ2 battery Ε2 to the first battery E1 is the second pole voltage drop, and the principle of the voltage balance circuit is the same as that of the figure M. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conventional battery parallel connection circuit. 201238206 Fig. 2 is a first embodiment of the battery parallel connection device of the present invention. Fig. 3 is a view showing a second embodiment of the battery parallel connection device of the present invention. Fig. 4 is a third embodiment of the battery parallel connection device of the present invention. Fig. 5 is a fourth embodiment of the battery parallel connection device of the present invention. Fig. 6 is a fifth embodiment of the battery parallel connection device of the present invention. Fig. 7 is a sixth embodiment of the battery parallel connection device of the present invention. Fig. 8 is a seventh embodiment of the battery parallel connection device of the present invention. Fig. 9 is a view showing an eighth embodiment of the battery parallel connection device of the present invention. [Main component symbol description] EA battery. EB battery. E1 first battery. E2 first battery. E1N The first more than one battery. E2N The second and second battery. D1 1st diode. D2 2nd dipole. D3 3rd dipole. D4 4th diode. VP external positive voltage terminal. VN external negative voltage terminal. 10