TWI282433B - Safety detection method of charger connector - Google Patents

Safety detection method of charger connector Download PDF

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Publication number
TWI282433B
TWI282433B TW93125985A TW93125985A TWI282433B TW I282433 B TWI282433 B TW I282433B TW 93125985 A TW93125985 A TW 93125985A TW 93125985 A TW93125985 A TW 93125985A TW I282433 B TWI282433 B TW I282433B
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TW
Taiwan
Prior art keywords
connector
secondary battery
charger
charging
impedance
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TW93125985A
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Chinese (zh)
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TW200428012A (en
Inventor
Shih-Hsiung Chang
Jr-Cheng Juang
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Qqe Technology Co Ltd
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Priority to TW93125985A priority Critical patent/TWI282433B/en
Publication of TW200428012A publication Critical patent/TW200428012A/en
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Publication of TWI282433B publication Critical patent/TWI282433B/en

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Abstract

There is provided a safety detection method of charger connector for determining whether the connector for electrical connection between the charger and the secondary battery has to be replaced or whether the connection is safe. The connectors of the charger and secondary battery are electrically connected to each other. The charger is employed to measure and obtain a feedback voltage form the secondary battery, and the charger outputs a current signal, so that the feedback voltage of the secondary battery is pulled up by the current signal to generate a transient voltage. The voltage difference between the transient voltage and feedback voltage is divided by the current value of the current signal to obtain a transient impedance of the connector. The transient impedance is compared with a standard impedance built in the charger. If the transient impedance is larger than or equal to the standard impedance, it is determined that the connector has to be replaced or the connector has an erroneous connection status, so as to make the charger stop charging or issue a message to the display unit on the charger to notify users of replacing the connector or re-arranging the electrical connection of the connector.

Description

1282433 九、發明說明: 【發明所屬之技術領域】 =明_於-種充電器連接頭之安全性法 【先前技術】 - 在邁人21世紀之後,—方面考慮到石油資源日漸短缺,另 汽油車所造成的環境污染,目前唯—可行的方法就是 _ ^源、低污染的純電動車(Ενν複合式電動車㈣)。 ^純電動車(EV)或複合式電動車(HEV)的技術瓶頸在於電池、 而主要關鍵在於電池。電動車雖然 染問題,因各家的廠牌使用之二次電池耗電量不同,但是普遍 航力不足之問題’系會有因二次電池之電力消耗殆盡,造成不便。所 =,依目前的使驗電動車之二次電池—天最少需充電—次,請來閱 弟1圖,如圖所示,電動車之二次電池1〇通常會設有-輸入線15, 且其-端設有-輸人連接頭16,該輸人連接頭16設有套接槽⑻。 而充電器20設有-輸出線2卜且其一端設有一與前述輸入連接頭π 相配合之輸出連接頭22,而輪出連接頭22設有與該套接槽ΐ6ι相配 合之導電端子221。 、因此,每需充電一次該輪入連接頭16與輸出連接頭22的套接與 拔,動作就需做-次’以_般二次電池1()之充電次數,—天一次來 計算,-年該輸人連接頭16與輸出連接頭22套接與拔_作就就超 過700次,易造成導電端子221與套接槽161間的導電不良和鬆動, 甚至導電端子221的地方有損壞或斷落。加上—般此二次電池1〇的 充都不小’且導電端子221與套接槽161的接合處阻抗原本就 偏咼,如此充電完成後會因為電流的熱效應(導線單位時間内產生的 熱)P=IR (P :功率’ I :電流,R :導線電阻)造成由金屬材料構成 的輸入連接頭16與輸出連接頭22的溫度會更高。 1282433 所以,一般使用者將因為輸入連接頭16與輸出連接頭22的溫度 高,而於充電完成需拔離輸入連接頭16與輸出連接頭22時,一二= 藉由拉動具塑膠材料包裹之輸入線15與輸出線21使輸出連接頭 拔離輸入連接頭16,如此更會加劇導電端子221與套接槽16丨的損壞 或斷落,使此處的阻抗變大。如此充電中或充電完成後電流的熱效應 使此處的功率增大產生高溫,導致週遭易然物被_造献災。也^ 能因為此處的阻抗變大使整個規《便大,如此使二次電池内的電 解液易分解導致電池特性及耐久性劣化,嚴重損壞二次電池的再充電 能力和蓄電能力,從而降低二次電池的可充電次數,縮短使用壽命。 本發明之主要目的在於可制導電端子與套接槽接合處的阻抗 與二預設阻抗比較,藉此檢測充電用轉接頭的安全性,讓使用者得知 何時該更新輸人連接頭與輸出連接贼者顏電性連接連接頭。 本發明之另一目的,係可經由一顯示器,同步得知更新輸入連接 頭與輸出連接頭的指示訊號。 運接 本發明透過充電器及二次電池之連接頭相互電性連接,以充電器 對一次電相量轉回綱壓,再由充電器輸出—電流訊號,使二次 電池回饋電較該電流訊餘概生-暫Μ壓,再崎態、電壓與回 饋電壓之電壓差除以電流訊號之電流值而得出該連接頭之暫態阻 抗,以該暫態阻抗與統器喊基準阻抗概較,若健阻抗大ς或 等於基準阻抗,剩賴連接配達更換鮮献連接敎連接狀態 錯决’讓充電H可停止充電或發出訊息至充電社之顯示單元以告知 使用者變更連接頭或重新進行連接頭電性連接。 口 【實施方式】 有關本發明之較佳實例與技術内容,茲配合圖式說明如下: “睛參閱「第1、2、3圖」,係為本發明之充電器10與二次電池2〇 電性連接示意圖、電路方塊圖及檢測方法流程圖。本發明係用以測量 釔酉文、鎳離子或鋰離子等具備蓄電能力之二次電池2〇與充電器之 1282433 連接頭,其中,該二次電池20設有一輸入線21,且其一端設有一輸 入連接頭22,該輸入連接頭22設有套接槽221 ;而充電器10設有一 輸出線15 ’且其一端設有一與前述輸入連接頭22相配合之輸出連接 頭16’而輸出連接頭16設有與該套接槽221相配合之導電端子161, 且應用本發明測量方法之充電器10主要具有一充電迴路,該充電迴路 包括控制單元11及變壓單元丨2,藉由控制單元u及變壓單元12電 力轉換外部電源後(交流轉直流或直流轉直流)對二次電池20充電, 该充電迴路係與一偵測迴路14連接,該偵測迴路14係具有一與控制 單兀11連接之微控制器141,該微控制器HI係對二次電池20測量 取得電壓,且該微控制器141輸出一電流訊號,經一訊號轉換器 142 (數位訊號轉類比訊號)輸出至一與二次電池20連接之負載電路 143 ’使;敵控制器141取得二次電池2〇多點不同電壓,並運算輸出至 一顯示單元13,本發明之檢測方法包括下列步驟: A、 電性連接充電器1〇及二次電池2〇 :將該充電器1〇及二次電池 20上配置之輸入連接頭22及輸出連接頭16,將該輸入連接頭22及輸 出連接頭16以套接槽221及導電端子161插接,使二次電池2〇完成 連接充電器10之裝設作業。 B、 取得暫態電壓(Vb)及電流:當二次電池20與充電器10完成 裝設作業,充電器10之控制單元n將發出一充電中斷訊號令充電迴 路停止對二次電池20充電,此時,二次電池2〇將回饋自身電壓至充 電器10,使偵測迴路14之微控制器141對二次電池20測量取得一回 饋電壓(Va)’再由微控制器141輸出一電流訊號(I)至負載電路143, 此時,二次電池20回饋電壓(Va)受該電流訊號(1)拉載將產生不 同電壓位準,讓微控制器141二次檢測,藉此取得一暫態電壓(敗)。 C、 取得連接頭之暫態阻抗(Ra):以上述暫態電壓(Vb)與回饋電 壓(Va)之電壓差(va-Vb)除以電流訊號(I)之電流值,如是得出 一暫態阻抗(Ra),此暫態阻抗(Ra)即代表充電器1〇在未充電狀態 下,由充電器10回饋電壓(Va)流經輸入連接頭22及輪出連接頭16 1282433 之暫態阻抗(Ra),前述暫態阻抗(Ra)議可由多次量測暫態賴(yb) 所取得之電壓差(Va-Vb)在運算出更精準暫態阻抗(Ra)。 D、比較並判斷連接頭更換標準:於充電器1〇内建一基準阻抗(Rx), =亥暫態阻抗㈤與基準阻抗㈤相比較,若暫態阻抗(⑹大 垃^等於鱗喊(Rx) ’糊定該連接頭已經毁損達更換鮮或是連 接頭之連雛誠生鬆脫或連财完全之錯誤歧,此時,充電哭ι〇 = Ϊ發出訊息至充電器1G上之顯示單元13以告知使用者變 w ’ 13 悔 唬顯不或者是以蜂鳴器發出聲響。 且 新連於將可立即得知連接頭狀態而適時更換或重 影塑頭22或輸_頭16因過溫造成火災或 日—人電池20充電能力,須 池2〇與充電器10初始電性 ^本發明不僅”疋在一次電 間隔-段時職複上述步驟測動作,在充電過程中,亦可 電時點均具有良好保護。贿充電器10及二次電池20在任-充 上列詳細說明係針對本發一 並非限制本發明之專利範 仃貫施例具體說明,惟該實施例 實施或變更,_、包麵離本發明之發明技藝精神之等效 3於本案之專利範圍内。 1282433 【圖式簡單說明】 第1圖,為充電器與二次電池電性連接示意圖。 第2圖,為本發明之電路方塊圖。 第3圖,為本發明之檢測方法流程示意圖。 【主要元件符號說明】 10 :充電器 11 :控制單元 12 :變壓單元 13 :顯示單元 14 :偵測迴路 141 :微控制器 142 :訊號轉換器 143 :負載電路 15 :輸出線 16 :輸出連接頭 161 :導電端子 20 :二次電池 21 :輸入線 22 :輸入連接頭 221 :套接槽 A:電性連接充電器及二次電池 B:取得暫態電壓及電流 C:取得連接頭之暫態阻抗 D:比較並判斷連接頭更換標準1282433 IX. Description of the invention: [Technical field of invention] = Safety method of Ming-Yu-type charger connector [Prior technology] - After the 21st century, considering the increasing shortage of petroleum resources, gasoline The environmental pollution caused by the car is currently only feasible. It is a source of low-contamination pure electric vehicles (Ενν compound electric vehicle (4)). ^ The technical bottleneck of pure electric vehicle (EV) or hybrid electric vehicle (HEV) lies in the battery, and the main key is the battery. Although the electric vehicle has a problem of dyeing, the secondary battery used by each brand has different power consumption, but the problem of insufficient airpower is caused by the exhaustion of the secondary battery, which causes inconvenience. =, according to the current inspection of the electric vehicle's secondary battery - the minimum need to charge - day, please come to see the brother 1 picture, as shown in the figure, the electric vehicle's secondary battery 1 〇 usually will be provided - input line 15 And at the end thereof, there is provided an input connector 16, and the input connector 16 is provided with a socket (8). The charger 20 is provided with an output terminal 2, and one end thereof is provided with an output connector 22 which cooperates with the input connector π, and the wheel connector 22 is provided with a conductive terminal 221 which cooperates with the socket slot 621. . Therefore, each time the wheeled connector 16 and the output connector 22 are socketed and pulled, the operation needs to be done - times the number of times of charging the secondary battery 1 (), once a day, - In the year, the input connector 16 and the output connector 22 are socketed and pulled out more than 700 times, which easily causes poor conduction and looseness between the conductive terminal 221 and the socket groove 161, and even the conductive terminal 221 is damaged. Or cut off. In addition, the charging of the secondary battery is not small, and the impedance of the junction between the conductive terminal 221 and the socket groove 161 is originally biased, so that the charging is completed due to the thermal effect of the current (the wire is generated per unit time). Heat) P = IR (P: power 'I: current, R: wire resistance) causes the temperature of the input connector 16 and the output connector 22 made of a metal material to be higher. 1282433 Therefore, the general user will have a high temperature of the input connector 16 and the output connector 22, and when the charging is completed, the input connector 16 and the output connector 22 need to be pulled out, one or two = by pulling the plastic material The input line 15 and the output line 21 pull the output connector away from the input connector 16, which further aggravates the damage or breakage of the conductive terminal 221 and the socket groove 16丨, so that the impedance here becomes large. The thermal effect of the current during or after the charging is completed causes the power here to increase to a high temperature, causing the surrounding susceptibility to be catastrophic. Also, because the impedance here becomes large, the entire gauge is large, so that the electrolyte in the secondary battery is easily decomposed, thereby deteriorating the battery characteristics and durability, seriously damaging the recharging ability and the storage capacity of the secondary battery, thereby reducing The number of times the secondary battery can be charged shortens the service life. The main purpose of the present invention is to compare the impedance of the junction between the conductive terminal and the socket slot with the two preset impedances, thereby detecting the safety of the charging adapter, and letting the user know when to update the input connector and The output is connected to the thief's electrical connection connector. Another object of the present invention is to synchronize the indication signals for updating the input connector and the output connector via a display. The invention is electrically connected to each other through the connector of the charger and the secondary battery, and the charger returns the primary phasor back to the mode pressure, and then the charger outputs a current signal to make the secondary battery return power. The remaining state of the signal - the temporary voltage, the voltage difference between the voltage, the voltage and the feedback voltage is divided by the current value of the current signal to obtain the transient impedance of the connector, and the transient impedance and the reference impedance of the device If the impedance is greater than or equal to the reference impedance, the connection is replaced by the replacement connection. The connection status is incorrect. 'Let the charging H stop charging or send a message to the charging unit's display unit to inform the user to change the connector or re- Make electrical connection to the connector. [Embodiment] The preferred embodiment and technical contents of the present invention are as follows: "The eyes refer to "1, 2, and 3", which are the charger 10 and the secondary battery of the present invention. Electrical connection diagram, circuit block diagram and flow chart of detection method. The present invention is for measuring a 1282433 connector of a secondary battery 2〇 and a charger having a storage capacity such as a cymbal, a nickel ion or a lithium ion, wherein the secondary battery 20 is provided with an input line 21 and one end thereof is provided There is an input connector 22, the input connector 22 is provided with a socket 221; and the charger 10 is provided with an output line 15' and one end of the output connector 16 is matched with the input connector 22 and the output connector is connected. The head 16 is provided with a conductive terminal 161 matched with the socket 221, and the charger 10 applying the measuring method of the invention mainly has a charging circuit, and the charging circuit comprises a control unit 11 and a transformer unit ,2, by controlling The unit u and the transformer unit 12 electrically convert the external power source (AC to DC or DC to DC) to charge the secondary battery 20, and the charging circuit is connected to a detection circuit 14 having a control circuit The controller 141 is connected to the microcontroller 141. The microcontroller HI measures the voltage obtained by the secondary battery 20, and the microcontroller 141 outputs a current signal through a signal converter 142 (digital signal to analog signal). The output to the secondary battery 20 is connected to the load circuit 143'. The enemy controller 141 obtains two different voltages of the secondary battery and outputs the same voltage to a display unit 13. The detection method of the present invention includes the following steps: A. Electrically connecting the charger 1〇 and the secondary battery 2〇: the input connector 22 and the output connector 16 disposed on the charger 1 and the secondary battery 20, the input connector 22 and the output connector 16 The socket 221 and the conductive terminal 161 are inserted, and the secondary battery 2 is connected to the installation of the charger 10. B. Obtaining Transient Voltage (Vb) and Current: When the secondary battery 20 and the charger 10 complete the installation operation, the control unit n of the charger 10 will issue a charging interruption signal to stop the charging circuit from charging the secondary battery 20. At this time, the secondary battery 2〇 will feed back its own voltage to the charger 10, so that the microcontroller 141 of the detection circuit 14 measures a secondary feedback voltage (Va) for the secondary battery 20, and then outputs a current by the microcontroller 141. The signal (I) is sent to the load circuit 143. At this time, the secondary battery 20 feedback voltage (Va) is pulled by the current signal (1) to generate different voltage levels, so that the microcontroller 141 detects twice, thereby obtaining a Transient voltage (failed). C. Obtain the transient impedance (Ra) of the connector: divide the voltage difference (va-Vb) of the transient voltage (Vb) and the feedback voltage (Va) by the current value of the current signal (I), and obtain a Transient impedance (Ra), this transient impedance (Ra) represents the charger 1 〇 in the uncharged state, the charger 10 feedback voltage (Va) flows through the input connector 22 and the wheel connector 16 1282433 The state impedance (Ra), the aforementioned transient impedance (Ra) can be calculated from the voltage difference (Va-Vb) obtained by the multiple measurement transient (yb) to calculate a more accurate transient impedance (Ra). D. Compare and judge the connector replacement standard: build a reference impedance (Rx) in the charger 1〇, = Hai transient impedance (5) compared with the reference impedance (5), if the transient impedance ((6) large la ^ is equal to the scale shout ( Rx) 'It is said that the connector has been damaged until the replacement is fresh or the connector is broken or the money is completely wrong. At this time, the charging is crying = Ϊ Send a message to the display on the charger 1G The unit 13 informs the user that the change w ' 13 repentance or the buzzer sounds. And the new connection will immediately know the state of the connector and replace or re-shadow the head 22 or the head 16 Over-temperature causes fire or day-to-person battery 20 charging capacity, must be pool 2 〇 and charger 10 initial electrical ^ This invention is not only "in the first electrical interval - segment of the above-mentioned steps to measure the action, in the charging process, also The electric charge can be well protected. The brittle charger 10 and the secondary battery 20 are described in detail in the detailed description of the patent application, but the embodiment is not limited to the specific embodiment of the present invention, but the embodiment is implemented or changed. , _, the package is away from the spirit of the invention of the present invention Effect 3 is within the patent scope of this case. 1282433 [Simple description of the diagram] Fig. 1 is a schematic diagram showing the electrical connection between the charger and the secondary battery. Fig. 2 is a block diagram of the circuit of the present invention. Schematic diagram of the detection method of the invention. [Main component symbol description] 10: Charger 11: Control unit 12: Transformer unit 13: Display unit 14: Detection circuit 141: Microcontroller 142: Signal converter 143: Load circuit 15 : Output line 16: Output connector 161: Conductive terminal 20: Secondary battery 21: Input line 22: Input connector 221: Socket slot A: Electrically connected charger and secondary battery B: Acquire transient voltage and current C: Obtain the transient impedance of the connector D: Compare and judge the connector replacement standard

Claims (1)

1282433 、申請專利範圍: 1· 一種充電n連接頭之安全性檢财法,係 =用編说輸队她安:性之一檢測 匹配電二連技接充電器及二次電池:於該充電器及二次電池上均配置有相 器之==將該連接頭相互電性連接,使二次電池完成連接充電 由. M充蝴量轉喃電壓,再 號,使二次電池回饋電壓受該電流訊號拉載產 取=_之賴随··以上述健龍與_糕之輕差除以 電唬之電流值,如是得出該連接頭之暫態阻抗; 阳情連接頭更換標準:於充電11内建—基準阻抗,以該暫態 阻抗與基雜抗概較,若暫態隨大於鱗錄雜抗,則判定該 連接頭已達更換鮮献連接頭之連接狀態錯誤,从電器將停止充 電或發出m充電紅之顯示單元以告知使时變更連接頭或重新 將連接頭電性連接。 2.申晴專利範®中第i項所述之充電器連接頭之安全性檢測方 法,其中、,該檢測方法係應驗_充電器,該充電器包含有: 充^^路係、包括-控制單元及—變壓單元經電力轉換外部電源 後對二次電池充電; μ 债測路係具有—與控制單元連接之微控制旨,該微控制器 係對二次電池·取得電壓,且該微控·輸出—電流訊號,經_訊 號轉換讀出至-與二次電池連接之貞載電路,使微控制器二次取得 二次電池多點不同電壓,並運算輸出至一顯示單元。 3·如申明專利範圍中第2項所述之充電器連接頭之安全性檢測 方法’其中’該控制單元係輸出一充電中斷訊號令充電迴路停止對二 次電池充電,藉此取得二次電池真實回饋剩餘電量。 1282433 4. 如申請專利範圍中第2項所述之充電器連接頭之安全性檢測 方法,其中,該顯示單元係為一發光二極體 5. 如申請專利範圍中第2項所述之充電器連接頭之安全性檢測 方法,其中,該顯示單元係為一蜂鳴器。 6. 如申請專利範圍中第2項所述之充電器連接頭之安全性檢測 方法,其中,該比較並判斷連接頭更換標準步驟可在控制單元或微控 制器進行。1282433, the scope of application for patents: 1. A safety check method for charging n connectors, the system = use the editor to lose the team her security: one of the detection of matching electric two connected technology charger and secondary battery: in this charge Both the device and the secondary battery are equipped with a phase device == the connection head is electrically connected to each other, so that the secondary battery is connected and charged. The M charge is turned to the voltage, and the secondary battery is subjected to the feedback voltage. The current signal is pulled and the output is taken as the value of the current difference between the health and the _ cake, and the current value of the power is obtained, and the transient impedance of the connector is obtained; The built-in reference impedance of the charging 11 is compared with the base impedance. If the transient state is greater than the scale recording, it is determined that the connector has reached the connection state of the replacement connector. The charging unit will be stopped or the m charging red display unit will be sent to inform the time to change the connector or reconnect the connector. 2. The safety detection method of the charger connector described in item ith of the Shen Qing Patent Fan®, wherein the detection method is a _charger, the charger includes: a charging system, including - The control unit and the transformer unit charge the secondary battery after power conversion of the external power source; the μ debt measurement system has a micro control connected to the control unit, and the microcontroller controls the secondary battery to obtain a voltage, and the The micro-control and output-current signals are read out to the load-carrying circuit connected to the secondary battery by the _ signal conversion, so that the microcontroller obtains two different voltages of the secondary battery twice, and outputs the operation to a display unit. 3. The method for detecting the safety of the charger connector according to item 2 in the scope of the patent application, wherein the control unit outputs a charging interruption signal to stop the charging circuit from charging the secondary battery, thereby obtaining the secondary battery Really feedback the remaining power. 1282433 4. The method for detecting the safety of the charger connector according to Item 2 of the patent application, wherein the display unit is a light-emitting diode 5. The charging according to item 2 in the patent application scope The method for detecting the security of the connector, wherein the display unit is a buzzer. 6. The method for detecting the safety of a charger connector according to item 2 of the patent application, wherein the comparing and determining the connector replacement standard step can be performed at a control unit or a micro controller. 1111
TW93125985A 2004-08-30 2004-08-30 Safety detection method of charger connector TWI282433B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9557362B2 (en) 2011-08-30 2017-01-31 Aerovironment, Inc. Method and means for contactor monitoring in electric vehicle supply equipment
TWI767581B (en) * 2020-11-13 2022-06-11 大陸商昂寶電子(上海)有限公司 Apparatus and method for load sensing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9557362B2 (en) 2011-08-30 2017-01-31 Aerovironment, Inc. Method and means for contactor monitoring in electric vehicle supply equipment
TWI767581B (en) * 2020-11-13 2022-06-11 大陸商昂寶電子(上海)有限公司 Apparatus and method for load sensing

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