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 for simulating an electrical contacting of the single cell (2) in a cell module of an electrical energy storage device, wherein electrical poles (P) of the single cell (2) are arranged on one and the same side of the cell housing in an electrically insulated manner. According to the invention, the contacting arrangement (1) is characterized by - a base plate (3) with a holding device (4) for horizontal storage of the individual cell (2), - a stop element (5) arranged on the base plate (3) for positioning the individual cell (2), - a two-part contacting unit (6) opposite the stop element (5) with an electrical contacting area (K1) which has a predetermined number of spring-loaded electrical contact pins (7) for electrically contacting an electrical pole (P) of the individual cell (2), and a further electrical contacting area (K2) which has a predetermined number of spring-loaded electrical contact pins (7) for electrically contacting a further electrical pole (P) of the individual cell (2), wherein the contacting areas (K1, K2) are electrically insulated from one another and - a quick-action clamping unit (8) arranged on the contacting unit (6), which is designed to fix the contacting unit (6) positioned with respect to the electrical poles (P) of the individual cell (2) to the base plate (3).

Description

[0001] The invention relates to a contacting arrangement for a single cell with a cylindrical cell housing for simulating an electrical contacting of the single cell in a cell module of an electrical energy storage device, wherein electrical poles of the single cell are arranged on one and the same side of the cell housing in an electrically insulated manner from one another.

[0002] DE 10 2018 207 824 B3 discloses a contacting device for contacting cell terminals located opposite one another on a housing side of a prismatic battery cell for measuring the voltage of the battery cell. The contacting device comprises a plate-shaped support element that can be placed on the housing side between the cell terminals for guiding two voltage measuring lines of the contacting device along the housing side, as well as a clamping device for non-destructively releasably fixing the support element between the cell terminals.The two voltage measuring lines are designed to extend from opposite edges of the carrier element, which can be arranged at the respective cell terminals, in the direction of a center of the carrier element, and each have a first end arranged at the respective edge of the carrier element for electrical connection to the respective cell terminal and a second end arranged in the region of the center of the carrier element for forming voltage taps for the voltage measurement.

[0003] The invention is based on the object of providing a novel contact unit for individual cells of an electrical energy storage device.

[0004] The object is achieved according to the invention by a contacting unit which has the features specified in claim 1.

[0005] Advantageous embodiments of the invention are the subject of the subclaims.

[0006] A contacting arrangement for a single cell with a cylindrical cell housing for simulating electrical contacting of the single cell in a cell module of an electrical energy storage device, wherein electrical poles of the single cell are arranged electrically insulated from one another on one and the same side of the cell housing, comprises according to the invention a base plate with a holding device for horizontally supporting the single cell, a stop element arranged on the base plate for positioning the single cell, a two-part contacting unit opposite the stop element with an electrical contacting area which has a predetermined number of spring-loaded electrical contact pins for electrical contacting with an electrical pole of the single cell, and a further electrical contacting area,which has a predetermined number of spring-loaded electrical contact pins for electrical contact with another electrical pole of the individual cell, wherein the contacting areas are electrically insulated from one another, and a quick-action clamping unit arranged on the contacting unit, which is designed to fix the contacting unit positioned with respect to the electrical poles of the individual cell to the base plate.

[0007] Using a contacting arrangement designed in this way, electrical contacting of both electrical poles of the individual cell is possible on the same side of the contacting unit of the contacting arrangement. In particular, the contacting arrangement can be used to simulate the electrical contacting of the individual cell, designed as a round cell, in a cell module at the individual cell level.

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

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

[0010] Showing: Fig. 1 schematically shows a side view of a contact arrangement for a single cell designed as a round cell, Fig. 2 schematically shows a plan view of the contacting arrangement, Fig. 3 a sectional view of the contact arrangement and Fig. 4 schematically shows a perspective view of the contact arrangement.

[0011] Corresponding parts are provided with the same reference numerals in all figures.

[0012] Fig. 1 shows a side view of a contact arrangement 1 for a single cell 2 designed as a round cell, wherein in Fig. 2 a plan view of the contact arrangement 1, in Fig. 3 a sectional view of the contact arrangement 1 and in Fig. 4 shows a perspective view of the contact arrangement 1.

[0013] The single cell 2, designed as a round cell, has two electrical poles P, by means of which the single cell 2 can be electrically connected in series or parallel. A pole cap arranged on the cell lid of a cell housing of the single cell 2 forms one electrical pole P of the single cell 2, and another electrical pole P is formed by the cell lid, with the two electrical poles P being electrically insulated from one another. The two electrical poles P are arranged on one and the same side of the single cell 2.

[0014] By means of a contacting arrangement 1 designed in this way, electrical contacting of the electrical poles P of the individual cell 2 can be effected on one and the same side, wherein the electrical contacting of the individual cell 2 designed as a round cell in a cell module of an electrical energy storage device, in particular a traction battery, of a vehicle, in particular an electric vehicle, a hybrid vehicle or a vehicle powered by fuel cells, can be simulated at an individual cell level.

[0015] The contacting arrangement 1 comprises a base plate 3 with a holding device 4 for horizontally supporting the individual cell 2. A stop element 5 is arranged at one end of the base plate 3, which serves to position the individual cell 2. In particular, a displacement path of the individual cell 2 in the horizontal direction, in particular in the direction of the stop element 5, is limited by this.

[0016] Furthermore, the contacting arrangement 1 comprises a two-part contacting unit 6, which is arranged opposite the stop element 5 on the base plate 3.

[0017] The contacting unit 6 comprises an electrical contacting area K1, which has a predetermined number of spring-loaded electrical contact pins 7, which can also be referred to as high-current pins, for electrically contacting an electrical pole P of the individual cell 2. In particular, the contact pins 7 carry an operating current of the individual cell 2. In addition, the contacting unit 6 has a further electrical contacting area K2, which likewise has a predetermined number of further spring-loaded electrical contact pins 7 for electrically contacting a further electrical pole P of the individual cell 2. The two contacting areas K1, K2 are electrically insulated from one another. The contacting areas K1, K2 are designed as brass blocks that are electrically insulated from one another.In these contact areas K1, K2, which are designed as brass blocks, three spring-loaded electrical contact pins 7 are screwed together in an electrically insulated manner, whereby the number of spring-loaded contact pins 7 can vary.

[0018] Furthermore, in addition to the electrical contact pins 7, at least one sensing pin (not shown in detail) is arranged in the respective contact area K1, K2 for voltage measurement and thus for voltage monitoring. Furthermore, the respective contact area K1, K2 has, for example, a number of recesses, in particular for the arrangement of temperature sensors. Such a sensing pin can visually differ from the current-carrying contact pins 7 in terms of its size and conductor cross-section.

[0019] For example, the electrical contact pins 7 are designed for a maximum current of 50 amperes and the respective sensing pin for a maximum current of 10 amperes.

[0020] Depending on whether an electrical series connection or an electrical parallel connection of the individual cell 2 is to be simulated, the electrical poles P of the individual cell 2 and / or an electrical potential of the respective contact area K1, K2 are arranged accordingly.

[0021] For example, the electrical contacting area K1 is designed as a so-called clamping cylinder, whereas the further electrical contacting area K2 is designed as a so-called terminal block, or vice versa.

[0022] The respective contact area K1, K2 is electrically connected to an electrical line, i.e., a cable, to simulate the electrical contact of the individual cell 2. Such an electrical connection carries the operating current of the individual cell 2 and closes an electrical circuit.

[0023] If the intention is to simulate an electrical current flow of a cell module at the individual cell level, the individual cell 2 is arranged on the holding device 4, with the individual cell 2 resting against the stop element 5 with a cell side opposite a pole side. Once the individual cell 2 is positioned, the contacting unit 6 is displaced toward the pole side of the individual cell 2, in particular until the contact pins 7 of the respective contacting area K1, K2 contact the corresponding electrical pole P of the individual cell 2.

[0024] The contacting unit 6 is then fixed by means of a quick-clamping device 8 of the contacting arrangement 1, so that the electrical contact between the electrical poles P of the individual cell 2 and the contacting unit 6 can be ensured, in particular for the duration of the fixation by means of the quick-clamping device 8. The quick-clamping device 8 has two so-called eccentric levers for fixing the contacting unit 6 to the base plate 3.

[0025] Assuming that the electrical contacting area K1 is formed by means of the clamping cylinder, an electrical current flows, for example via a contact bolt 9 and the electrical contact area K1 through the electrically conductive contact pins 7 arranged in the electrical contacting area K1, via the one electrical pole P of the individual cell 2, for example an electrically negative pole P, into the individual cell 2 and via the further electrical pole P, in particular a positive pole P, through the further electrical contact pins 7 into the further electrical contact area K2 of the contacting unit 6, whereby an electrical current flow of a cell module, in particular of an electrical energy storage device, can be simulated.

[0026] An operating current flows via electrical contact elements 11, 12, wherein a first contact element 11, for example in the form of a sleeve with an internal thread, is assigned to one electrical contacting area K1 and a second electrical contact element 12, for example in the form of a further sleeve with an internal thread, is assigned to the further electrical contacting area K2, so that an electrical circuit is closed via the electrical contact elements 11, 12 and the electrical poles P of the individual cell 2.

[0027] The current sockets 10 are provided for voltage measurement and thus for voltage monitoring, wherein the respective current socket 10 is connected to a respective sensing pin that is electrically insulated from the contact areas K1, K2.

[0028] For example, the sensing pin comprises a pin and a sleeve, wherein the sleeve is connected to a cable, to the opposite end of which a current socket 10 can be soldered. A sensing cable of the contacting arrangement 1, in particular an electrical line, is connected to this current socket 10 as a test bench for the individual cell 2. By means of an insulating sleeve, a load connection is electrically insulated from a sensing connection of the contacting unit 6. In particular, such a design essentially ensures that an electrical current path is separated from an electrical voltage path and that measurement results from the contacting arrangement 1 are as precise as possible. List of reference symbols 1 contact arrangement 2 single cells 3 Base plate 4 Holding device 5 Stop element 6 Contact unit 7 electrical contact pin 8 Quick release device 9 contact bolts 10 power socket 11 first contact element 12 second contact element K1 electrical contact area K2 additional electrical contact area P electrical pole QUOTES CONTAINED IN THE DESCRIPTION

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

[0000] DE 10 2018 207 824 B3

[0002]

Claims

[1] Contacting arrangement (1) for a single cell (2) with a cylindrical cell housing for simulating an electrical contacting of the single cell (2) in a cell module of an electrical energy storage device, wherein electrical poles (P) of the single cell (2) are arranged on one and the same side of the cell housing in an electrically insulated manner, characterized by - a base plate (3) with a holding device (4) for horizontal storage of the individual cell (2), - a stop element (5) arranged on the base plate (3) for positioning the individual cell (2), - a two-part contacting unit (6) opposite the stop element (5) with an electrical contacting area (K1) which has a predetermined number of spring-loaded electrical contact pins (7) for electrically contacting an electrical pole (P) of the individual cell (2), and a further electrical contacting area (K2) which has a predetermined number of further spring-loaded electrical contact pins (7) for electrically contacting a further electrical pole (P) of the individual cell (2), wherein the contacting areas (K1, K2) are electrically insulated from one another and - a quick-action clamping unit (8) arranged on the contacting unit (6), which is designed to fix the contacting unit (6) positioned with respect to the electrical poles (P) of the individual cell (2) to the base plate (3). [2] Contacting arrangement (1) according to claim 1, characterized bythat the electrical contacting area (K1) has at least one electrically insulated sensing pin for voltage monitoring and the further electrical contacting area (K2) has at least one further electrically insulated sensing pin for voltage monitoring, wherein in the respective contacting area (K1, K2) at least one recess for arranging a temperature sensor is provided. [3] Contacting arrangement (1) according to claim 1 or 2, characterized by that the respective electrical contact area (K1, K2) is electrically connected to an electrical line. [4] Contacting arrangement (1) according to claim 2 or 3, characterized byin that the at least one sensing pin of the electrical contacting region (K1) of the contacting unit (6) is arranged within an electrical insulation sleeve for electrically insulating a current path from a voltage path, wherein the sensing pin comprises a sleeve which is coupled via an electrical line to a current socket (10) to which a sensing line for voltage measurement is connected.

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