Contact arrangement for a single cell

Abstract

The invention relates to a contacting arrangement (1) for a single cell (2) with a cylindrical cell housing (3) for test operation of the single cell (2), which is mounted by means of a holding device (4). According to the invention, the holding device (4) has a support element (9) which partially corresponds to a lateral surface section (M1) of the cell housing (3) of the single cell (2) and on which the single cell (2) rests. The holding device (4) has a locking element (5) pivotably arranged on the support element (9), which, in a closed position, contacts a contact section (K) partially with an opposite lateral surface section (M2) of the cell housing (3) of the single cell (2), and the single cell (2) is fixed in a horizontal position by means of the holding device (4) in the closed position of the locking element (5).at one end of a support arm (13) of the support element (9) a feedthrough opening (D) is formed through which a cable (15) of a temperature sensor (14) is passed, and in the contact section (K) of the locking element (5) a recess (A) is formed in which a free end of the temperature sensor (14) is fixed in order to continuously detect a temperature value at the same location of the respective fixed individual cell (2) during the test operation when the locking element (5) is in the closed position.

Description

[0001] The invention relates to a contact arrangement for a single cell with a cylindrical cell housing for test operation of the single cell, which is mounted by means of a holding device.

[0002] From DE 90 16 987 U1, an accumulator holding device with a temperature sensor is known. The temperature sensor serves to regulate the charging process of an accumulator that is fixed in the holding device. The measuring surface of the temperature sensor is provided for contact with a side wall of the accumulator under mechanical preload. The holding device has a base plate on which the accumulator housing, equipped with base strips, rests. The base plate interacts with a clamping jaw, also part of the holding device, with a clamping screw and clamping nut, by means of which the accumulator can be pressed against the base plate of the holding device. The temperature sensor is attached to an elastically spring-loaded clamping bracket, one end of which is attached to the clamping jaw of the holding device, and the other end of which carries the temperature sensor.

[0003] The invention is based on the objective of providing a contact arrangement for a single cell with a cylindrical cell housing.

[0004] The problem is solved according to the invention by a contact arrangement which has the features specified in claim 1.

[0005] Advantageous embodiments of the invention are the subject of the dependent claims.

[0006] A contacting arrangement for a single cell with a cylindrical cell housing for test operation of the single cell comprises a holding device by means of which the single cell is mounted. According to the invention, the holding device is designed for horizontal and / or vertical mounting of the single cell, wherein the holding device has a support element arranged transversely to the longitudinal axis of the single cell, which corresponds section by section to a lateral surface section of the cell housing of the single cell and on which the single cell rests. The holding device has a locking element pivotably arranged transversely to the longitudinal axis of the single cell on the support element, which, in a closed position, is contacted section by section with an opposite lateral surface section of the cell housing of the single cell.wherein the individual cell is fixed in a horizontal position by means of the holding device in the closed position of the locking element, a feed-through opening is formed at one end of a support arm of the support element through which a cable of a temperature sensor is passed, and a recess is formed in the contact section of the locking element in which a free end of the temperature sensor is fixed in order to continuously detect a temperature value at the same point of the respective fixed individual cell during the test operation in the closed position of the locking element.

[0007] Using the holding device, it is possible to reproducibly position the temperature sensor to an accuracy of one tenth of a millimeter at the same location on the individual cell, in particular in the opposite lateral surface section of the cell housing.

[0008] In particular, the contact arrangement represents a simulation model for the electrical and / or thermal behavior of the individual cell.

[0009] Exemplary embodiments of the invention are explained in more detail below with reference to drawings.

[0010] This shows: Fig. 1. Schematic top view of a section of a contact arrangement for a single cell with a cylindrical cell housing for a test operation. Fig. 2 schematically a perspective view of several contact arrangements, Fig. 3 schematically a sectional view of the contact arrangement in the area of ​​a holding device, Fig. 4 schematically a perspective view of a sectional representation of the holding device of the contacting arrangement and Fig. Figure 5 schematically shows a perspective view of a contact arrangement with the locking element of the holding device open.

[0011] Corresponding parts are marked with the same reference symbols in all figures.

[0012] Fig. Figure 1 shows a top view of a section of a contact arrangement 1 for a single cell 2 with a cylindrical cell housing 3 for a test operation of the single cell 2 and in Fig. Figure 2 shows a perspective view of several contact arrangements 1.

[0013] In Fig. Figure 3 shows a sectional view of the contact arrangement 1 in the area of ​​a holding device 4, wherein Fig. 4 a perspective view of a sectional representation of the holding device 4 of the contacting arrangement 1 and in Fig. Figure 5 shows a perspective view of a contact arrangement 1 with the locking element 5 of the holding device 4 open.

[0014] The single cell 2, designed as a cylindrical cell, has two electrical poles (not shown) by means of which the single cell 2 can be electrically connected in series or in parallel. A pole cap arranged on the cell cover of the cell housing 3 of the single cell 2 forms one electrical pole of the single cell 2, and another electrical pole is formed by the cell cover itself, with the two electrical poles being electrically insulated from each other. Both electrical poles are located on the same side of the single cell 2.

[0015] By means of a contact arrangement 1 designed in this way, electrical contacting of the electrical poles of the single cell 2 can be carried out on one and the same side, wherein the electrical contacting of the single cell 2 in a cell module of an electrical energy storage device, in particular a traction battery, a vehicle, in particular an electric vehicle, a hybrid vehicle or a fuel cell-powered vehicle, can be simulated at a single cell level.

[0016] The contact arrangement 1 has a base plate 6 with a holding device 4 for the horizontal mounting of the individual cell 2. A stop element 7 is arranged at one end of the base plate 6, which serves to position the individual cell 2. In particular, the displacement of the individual cell 2 in a horizontal direction, especially in the direction of the stop element 7, is limited by this element.

[0017] Furthermore, the contact arrangement 1 comprises a two-part contact unit 8, not shown in detail, which is arranged opposite the stop element 7 on the base plate 6.

[0018] The holding device 4 comprises a support element 9 fixedly arranged on the base plate 6, the shape of which corresponds to a lateral surface section M1 of the cell housing 3 of the individual cell 2. The support element 9 extends transversely to the longitudinal axis of the individual cell 2, which is designed as a cylindrical cell. The locking element 5 is pivotably arranged on a support arm 10 of the support element 9, with a pivot axis S extending parallel to the longitudinal axis of the individual cell 2. When the individual cell 2 rests on the support element 9, the locking element 5 is pivoted and positioned in its closed position to fix the individual cell 2 in the holding device 4. Two locking lugs 11 are formed and / or arranged at a distance from each other at a free end of the locking element 5, which, in the closed position, engage with an outer contour of a projection A1 of an opposing support arm 12.Thus, the holding device 4 is closed in a form-fit and force-fit manner, which holds the individual cell 2 in a horizontal position.

[0019] In the closed position of the locking element 5, it rests with a contact section K on an opposite lateral surface section M2 of the cell housing 3 of the single cell 2.

[0020] In order to detect a temperature value of the single cell 2 fixed by means of the holding device 4 during the test operation by means of a temperature sensor, in particular by means of a temperature probe 13, a feedthrough opening D in a further shape A2 is formed at one end of the opposite support arm 13, through which a cable 14 of the temperature probe 13 is passed.

[0021] Furthermore, a recess A is formed in the contact section K of the locking element 5, which is located in Fig.Figure 4 shows this in more detail. A free end of the temperature sensor 13 is fixed in the recess A, so that the sensor surface of the temperature sensor 13 rests in contact section K against the opposite lateral surface section M2 of the cell housing 3 of the individual cell 2. When the locking element 5 is closed, an instantaneous temperature value of the individual cell 2 is continuously recorded. Due to its attachment to the holding device 4 of the contacting arrangement 1, the temperature sensor 13 is always positioned at the same location on the respective fixed individual cell 2 in order to record the temperature value during the test operation. The temperature sensor 13 can therefore be reproducibly applied to a lateral surface, in particular to the opposite lateral surface section M2 of the cell housing 3, of the respective individual cell 2. Reference symbol list 1 Contact arrangement 2 single cells 3 cell casings 4 Holding device 5 locking element 6 Base plate 7 Stop element 8 Contact unit 9 support element 10 support arm 11 Rastnase 12 support arms 13 temperature sensors 14 cables A recess A1 shape A2 further development D Feedthrough opening K Contact section M1 Surface section M2 opposite lateral surface section S swivel axis QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 90 16 987 U1

[0002]

Claims

Contact arrangement (1) for a single cell (2) with a cylindrical cell housing (3) for test operation of the single cell (2), which is mounted by means of a holding device (4), characterized in that: - the holding device (4) is designed for horizontal mounting of the single cell (2), wherein: - the holding device (4) has a support element (9) arranged transversely to the longitudinal axis of the single cell (2), which corresponds section by section to a lateral surface section (M1) of the cell housing (3) of the single cell (2) and on which the single cell (2) rests; - the holding device (4) has a locking element (5) pivotably arranged transversely to the longitudinal axis of the single cell (2) on the support element (9), which in a closed position is contacted section by section (K) with an opposite lateral surface section (M2) of the cell housing (3) of the single cell (2).wherein the individual cell (2) is fixed in a horizontal position by means of the holding device (4) in the closed position of the locking element (5), a feed-through opening (D) is formed at one end of a support arm (12) of the support element (9) through which a cable (14) of a temperature sensor (13) is passed, and a recess (A) is formed in the contact section (K) of the locking element (5) in which a free end of the temperature sensor (13) is fixed in order to continuously detect a temperature value at the same location of the respective fixed individual cell (2) during the test operation in the closed position of the locking element (5). Contact arrangement (1) according to claim 1 , characterized in that the locking element (5) has at least one locking lug (11) at its free end which, in the closed position of the locking element (5), engages with a projection (A1) on an outer contour of the end of the support arm (12). Contact arrangement (1) according to claim 1 or 2, characterized in that the holding device (4) is arranged on a base plate (6).

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