VOLTAGE TAP FOR MEASURING A VOLTAGE

Abstract

A voltage tap for measuring a voltage includes at least one contact region and one abutment surface. Using the abutment surface, the voltage tap is electrically connectable to a contact surface of an electrical circuit board. The abutment surface comprises an enlarged surface with respect to the contact surface of the electrical circuit board, so that the electrical connection between the voltage tap and the electrical circuit board is provided independently of a movement of the voltage tap.

Claims

1. A voltage tap for measuring a voltage comprising: at least one contact region; and an abutment surface coupled to a portion of the at least one contact region, wherein the abutment surface is electrically connectable to a contact surface of an electrical circuit board, and wherein the abutment surface comprises an enlarged surface with respect to the contact surface of the electrical circuit board.

2. The voltage tap according to claim 1, wherein the abutment surface is configured in a shape of a calotte.

3. The voltage tap according to claim 1 further comprises rounded cut edges in a region of the abutment surface.

4. The voltage tap according to claim 1, wherein at least one of the abutment surface and the at least one contact surface of the electrical circuit board is wetted with a lubricant in a region of the electrical connection.

5. The voltage tap according to claim 4, wherein the lubricant is a dielectric coolant.

6. The voltage tap according to claim 1, wherein the at least one contact region is disposed on a cell connector of a battery cell.

7. The voltage tap according to claim 6, wherein the at least one contact region comprises a set of contact lugs that are configured to electrically contact the battery cell.

8. The voltage tap according to claim 7, wherein the at least one contact region contacts a plurality of positive poles or negative poles of a plurality of battery cells, and the at least one contact region comprises a plurality of electrically conductive contact elements, wherein each electrically conductive contact element respectively contacts a positive terminal or negative terminal of the battery cell.

9. The voltage tap according to claim 1, wherein the at least one contact region is manufactured from a stamped bent part.

Description

DRAWINGS

[0023] In order that the disclosure may be well understood, there will now be described various forms thereof, given by way of example, reference being made to the accompanying drawings, in which:

[0024] FIG. 1 shows a voltage tap in a first form, according to the teachings of the present disclosure;

[0025] FIG. 2 shows the voltage tap in the first form in a perspective depiction, according to the teachings of the present disclosure; and

[0026] FIG. 3 shows a section of a battery module including a voltage tap in a second form, according to the teachings of the present disclosure.

[0027] The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way.

DETAILED DESCRIPTION

[0028] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

[0029] FIG. 1 shows a voltage tap 100 for measuring a voltage in a first form. Using the voltage tap 100, voltages, in one form, of one or more battery cells of an electrically powered vehicle can be measured. The voltage tap 100 comprises a contact region 102 and a receiving surface 207 (shown in FIG. 3).

[0030] In the contact region 102, the voltage tap 100 is electrically contactable by an electrical component, in one form, a battery cell. The voltage tap 100 also comprises an abutment surface 101.

[0031] FIG. 2 shows the voltage tap in the first form in a perspective view. In the first form, the abutment surface is a curved surface. Using the curved abutment surface 101, the voltage tap 100 can contact against a contact surface of the circuit board by at least one part of the curved abutment surface 101 abutting against the contact surface of the circuit board.

[0032] FIG. 3 shows a section of a battery module 200 including a voltage tap 100 in a second form. In the battery module 200, a plurality of battery cells 202 are disposed in rows offset with respect to one another. In the second form, the battery cells 202 are round cells. In another form, the battery cells 202 can be pouch cells or prismatic cells. The battery cells 202 are connected to one another in parallel via a cell connector 205 and surrounded by a battery module housing 201.

[0033] Contact crowns 203 of a cell connector 205 are respectively welded onto the battery cells 202. The cell connector 205 serves for contacting a positive pole of a battery cell including a negative pole of a further batter cell. The contact crowns 203 simultaneously serve as contact elements for electrical contacting of the battery cells 202 with the voltage tap 100. In the second form, the voltage tap 100 is configured to be a single piece with the contact crowns 203 of the cell connector. The abutment surface 101 of the voltage tap 100 abuts against the contact surface of a circuit board 204 and contacts the circuit board 204. Since the abutment surface 101 is curved and thus has an enlarged surface, a contacting of the abutment surface 104 against the contact surface of the circuit board 204 is provided at any time independent of a movement of the voltage tap 100, and precise measurement values of the voltages of the battery cells 202 can thus be detected. Via the voltage tap 100, it is not necessary to monitor each of the battery cells 202, connected in parallel using the cell connector 18, with respect to their voltage.

[0034] In one form, the contact crown 203 can comprise contact lugs 206 that contact the positive terminal of the first battery cell, and an electrical connection between a first battery cell and a second battery cell is thus producible.

[0035] Unless otherwise expressly indicated herein, all numerical values indicating mechanical/thermal properties, compositional percentages, dimensions and/or tolerances, or other characteristics are to be understood as modified by the word “about” or “approximately” in describing the scope of the present disclosure. This modification is desired for various reasons including industrial practice, material, manufacturing, and assembly tolerances, and testing capability.

[0036] As used herein, the phrase at least one of A, B, and C should be construed to mean a logical (A OR B OR C), using a non-exclusive logical OR, and should not be construed to mean “at least one of A, at least one of B, and at least one of C.”

[0037] The apparatuses and methods described in this application may be partially or fully implemented by a special purpose computer created by configuring a general-purpose computer to execute one or more particular functions embodied in computer programs. The functional blocks, flowchart components, and other elements described above serve as software specifications, which can be translated into the computer programs by the routine work of a skilled technician or programmer.

[0038] The description of the disclosure is merely exemplary in nature and, thus, variations that do not depart from the substance of the disclosure are intended to be within the scope of the disclosure. Such variations are not to be regarded as a departure from the spirit and scope of the disclosure.