Samsung Sdi Co., Inc.

Helmut Hammerschmied

Maximilian Hofer

Peter Apolloner

Urban Cotic

A testing method for a thermal contact between a temperature sensor and a battery cell of a battery module, includes measuring a temperature Tof the temperature sensor at a time point t, heating the temperature sensor for a defined time (t−t) and/or (t−t), measuring a temperature Tof the temperature sensor at a time point tand/or a temperature Tof the temperature sensor at a time point t, and determining the thermal contact between the temperature sensor and the battery cell based on at least one of the temperature differences ΔT=(T−T), ΔT=(T−T) and ΔT=(T−T) and a heat transfer coefficient determined thereby. Also, a testing circuit for a temperature sensor of a battery module includes a thermistor with a first node connected to a first supply voltage and a second node connected to ground, a switch interconnected between the first node of the thermistor and a second supply voltage, and an analog-to-digital converter connected in parallel to the thermistor. Also, a cell supervision circuit for a battery module including a circuit carrier, a testing circuit, and a temperature sensor surface mounted to the circuit carrier and having a measuring head with a thermistor configured to be brought into thermal contact with a battery cell of the battery module.

Cell supervision circuit for a battery module

The present invention relates to a testing method for the thermal contact between a temperature sensor () and a battery cell () of a battery module (), wherein the method comprises the steps of measuring a temperature Tof the temperature sensor () at a time point t, heating the temperature sensor () for a defined time (t&#x2212;t), measuring a temperature Tof the temperature sensor () at a time point tand/or a temperature Tof the temperature sensor () at a time point t, and determining the thermal contact between the temperature sensor () and the battery cell () based on at least one of the temperature differences &#x394;T=(T&#x2212;T), &#x394;T=(T&#x2212;T) and/or &#x394;T=(T&#x2212;T). The invention further relates to a testing circuit () for a temperature sensor () of a battery module (), comprising a thermistor () with a first node () connected to a first supply voltage () and a second node () connected to ground (), a switch () interconnected between the first node () of the thermistor () and a second supply voltage (), and an analog-to-digital converter () connected in parallel to the thermistor (). The invention further relates to a cell supervision circuit () for a battery module (), comprising a circuit carrier (), a testing circuit () according to any one of the claimsto, and a temperature sensor () surface mounted to the circuit carrier () and comprising a measuring head () with a thermistor () configured to be brought into thermal contact with a battery cell () of the battery module ().

Temperature sensor thermal contact testing method and circuit

The present invention relates to a battery system including a battery module configured to include a plurality of rechargeable battery cells, a housing configured to house the battery module, a printed circuit board disposed on the battery module to include a first surface that faces the battery module and a second surface that is opposite to the first surface, and a connector configured to connect the printed circuit board and an external electrical component, wherein the printed circuit board includes a plurality of bent terminal portions disposed on the second surface, and the connector includes a plurality of metal clamps that are respectively connected to the plurality of bent terminal portions of the printed circuit board. In the battery system of the present invention, the connection between the connector and the printed circuit board can be realized without soldering wires.

Connector for printed circuit board and battery system comprising printed circuit board and connector

The present invention relates to a battery module, and the battery module includes at least one battery cell, a protection circuit module that includes a rigid printed circuit board, and is electrically connected with the battery cell, at least one temperature sensing element provided at a surface of the battery cell, and a flexible printed circuit board that electrically connects the protection circuit module and the temperature sensing element.

Battery module having fixing structure for temperature sensing element

The present invention refers to a battery system () which comprises a cell stack (), wherein at least two battery cells () of the cell stack () are electrically interconnected via a battery cell connector (). The battery system () comprises a printed circuit board, PCB (), and a cell connecting unit, CCU (). The battery cell connector () is accommodated in the CCU (), the CCU () being fixed onto the cell stack () and comprising one first flexible bracket () that is inserted into a corresponding mounting hole () of the PCB (). According to the invention, the first flexible bracket () of the CCU () comprises a member () configured to fix the PCB () to the CCU () after the member () has been molten in a state in which the first flexible bracket () was inserted into the corresponding mounting hole ().

Battery system with a cell connecting unit

A battery module includes: a battery cell; a protective circuit module electrically coupled to the battery cell; a temperature sensitive element at the battery cell; a flexible printed circuit board having first and second end portions and an inner portion extending between the first and second end portions; and a spring. The protective circuit module includes a rigid printed circuit board. The flexible printed circuit board is fixed to a surface of the rigid printed circuit board facing the battery cell by the first and second end portions such that the inner portion forms a loop, is electrically connected to the protective circuit module and to the temperature sensitive element, and is centrally positioned on the inner portion of the flexible printed circuit board. The spring is arranged within the loop of the flexible printed circuit board such that the temperature sensitive element is pushed towards the battery cell.

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Graz, Austria

Helmut Hammerschmied