The invention relates to a battery system (10) for an electric vehicle, comprising: a battery pack (5) having a positive electrode (22), a negative electrode (21), at least one battery cell (2) and a pack voltage divider (25); and at least one coupling network having a negative connection (11) and a positive connection (12), wherein the group voltage divider (25) comprises a positive group resistor (RP2) and a positive sub-group resistor (RSP2), which are connected in series with each other between the positive electrode (22) and a reference point (50), and a negative group resistor (RP1) and a negative sub-group resistor (RSP1), which are connected in series with each other between the negative electrode (21) and the reference point (50). The at least one coupling network has a coupling voltage divider (15), the coupling voltage divider comprises a positive coupling resistor (RK2) and a positive partial coupling resistor (RSK2), which are connected in series with each other between the positive connection (12) and the reference point (50), and a negative coupling resistor (RK1) and a negative partial coupling resistor (RSK1), which are connected in series with each other between the negative connection (11) and the reference point (50). The invention also relates to a method for diagnosing a battery system (10) according to the invention, wherein a positive group voltage (UP2) occurring at the positive component-group resistor (RSP2) is measured, a negative group voltage (UP1) occurring at the negative component-group resistor (RSP1) is measured, a positive coupling voltage (UK2) occurring at the positive component-coupling resistor (RSK2) is measured, a negative coupling voltage (UK1) occurring at the negative component-coupling resistor (RSK1) is measured, and the measured voltages (UP1, UP2, UK1, UP2, UK1, UP2, UK1, UK2, UK1, UK1, UK2, UK1, UK2, UK1, UK2, UK1, UK2, UK1, UK2, UK1, UK2, UK1, UK2, UK1, UK2, UK1, UK2, UK1, UK2, UK1, UK2, UK1, UK2, UK1 The invention also relates to an electric vehicle comprising a battery system (10) according to the invention.

    本发明涉及一种用于电动车的电池系统(10),所述电池系统包括:电池组(5),所述电池组具有正极(22)、负极(21)、至少一个电池单池(2)和组分压器(25);以及至少一个耦合电网,所述耦合电网具有负端子(11)和正端子(12),其中所述组分压器(25)包括彼此串联地被连接到所述正极(22)与参考点(50)之间的正的组电阻(RP2)和正的分‑组电阻(RSP2)以及彼此串联地被连接到所述负极(21)与所述参考点(50)之间的负的组电阻(RP1)和负的分‑组电阻(RSP1)。所述至少一个耦合电网具有耦合分压器(15),所述耦合分压器包括彼此串联地被连接到所述正端子(12)与所述参考点(50)之间的正的耦合电阻(RK2)和正的分‑耦合电阻(RSK2)以及彼此串联地被连接到所述负端子(11)与所述参考点(50)之间的负的耦合电阻(RK1)和负的分‑耦合电阻(RSK1)。本发明也涉及一种用于对按本发明的电池系统(10)进行诊断的方法,其中测量在所述正的分‑组电阻(RSP2)上出现的正的组电压(UP2)、测量在所述负的分‑组电阻(RSP1)上出现的负的组电压(UP1)、测量在所述正的分‑耦合电阻(RSK2)上出现的正的耦合电压(UK2)、测量在所述负的分‑耦合电阻(RSK1)上出现的负的耦合电压(UK1)并且对所测量的电压(UP1、UP2、UK1、UK2)实施测评。本发明也涉及一种包括按本发明的电池系统(10)的电动车。


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    Title :

    BATTERY SYSTEM FOR ELECTRIC VEHICLE, METHOD FOR DIAGNOSING BATTERY SYSTEM, AND ELECTRIC VEHICLE


    Additional title:

    用于电动车的电池系统、用于对电池系统进行诊断的方法和电动车


    Contributors:

    Publication date :

    2022-06-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



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