CELL CONTACT SYSTEM, METHOD FOR MANUFACTURING A CELL CONTACT SYSTEM, AND BATTERY MODULE - Patent application

Abstract

To provide a cell contact system of an electric battery module, a method for manufacturing a cell contact system, and a battery module having a cell contact system.SOLUTION: A cell contact system of an electric battery module includes a carrier structure, a plurality of cell contact elements arranged in the carrier structure so as to be brought into electric contact with a plurality of battery cells of the battery module, a plurality of power connection parts which are electrically connected to the cell contact elements, and a measurement device for measuring at least one parameter of the battery module connected to the cell contact system. The measurement device includes at least one sensor element for measuring the parameter. The sensor element is connected to a connection contact of the cell contact system through at least one sensor line, and can connect a monitoring device to the measurement device through the connection contact so as to monitor the parameter.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cell contact system for an electric battery module, a method for manufacturing a cell contact system, and a battery module having a cell contact system. [Background technology]

[0002] Various embodiments of cell contact systems for electric battery modules are known in the prior art. The cell contact systems function to generate current flow to and from individual battery cells of the battery module. Furthermore, the cell contact systems function to enable monitoring of parameters such as the operating voltage and / or operating temperature of the battery module. Summary of the Invention [Problem to be solved by the invention]

[0003] SUMMARY OF THE INVENTION It is an object of the present invention to provide an improved cell contact system for an electric battery module, an improved method for manufacturing the cell contact system, and a battery module having the cell contact system. [Means for solving the problem]

[0004] The object of the invention is achieved by the cell contacting system, the method for manufacturing the cell contacting system, and the battery module according to the independent claims. Advantageous configurations are the subject of the dependent claims.

[0005] According to an aspect of the present invention, there is provided a cell contacting system for an electric battery module, the cell contacting system comprising: a carrier structure; a plurality of cell contact elements disposed on the carrier structure for electrically contacting a plurality of battery cells of the battery module; a plurality of power connections electrically connected to the cell contact elements; a measuring device for measuring at least one parameter of a battery module connected to the cell contact system; Equipped with A cell contact system is provided in which the measuring device includes at least one sensor element for measuring a parameter, the sensor element being connected to a connection contact of the cell contact system via at least one sensor line, a monitoring device can be connected to the measuring device via the connection contact to monitor the parameter, the sensor element being connected to the at least one cell contact element and configured to measure the parameter, and the sensor element being fixed to the cell contact element via a holding element formed on the cell contact element.

[0006] As a result, a technical advantage can be achieved in that an improved cell contact system for an electric battery module can be provided.

[0007] The measuring device allows for a technically simple solution for measuring parameters, thereby monitoring the function and performance of the battery module. Because standard cables can be used to wire and connect the sensor elements to the connection contacts, the more technically complex solutions known from the prior art, which involve printed circuit boards (PCBs) and ribbon cables for the electrical connection of the sensor elements and the connection contacts, can be substantially avoided. This allows for a technically simpler and therefore more cost-effective solution.

[0008] The holding element of the cell contact element allows for easy contact and fixing of the sensor element to the cell contact element. By arranging the sensor element on the cell contact element, the manufacturing process of the cell contact system is also simplified and therefore improved.

[0009] According to an embodiment, the holding element is designed as a clip element and is configured to clamp the sensor element to the cell contact element.

[0010] As a result, a technical advantage can be achieved in that the sensor element can be firmly fixed to the cell contact element.The clamping action can firmly fix the sensor element to the cell contact element.

[0011] Furthermore, the clamping action allows for easy assembly of the cell contact system.

[0012] According to an embodiment, the retaining element defines a contact area for contacting the sensor element, the contact area being spaced apart from a surface of the cell contact element.

[0013] As a result, by spacing the contact area away from the surface of the cell contact element, a technical advantage can be achieved in that the fixation of the sensor element and therefore the manufacture of the cell contact system can be simplified.

[0014] Furthermore, differences in thickness between the sensor line and the sensor element can be compensated for by the spacing.

[0015] According to an embodiment, the holding element defines a receiving space for receiving the sensor element, into which the sensor element can be inserted in order to fix the sensor element to the holding element.

[0016] As a result, a technical advantage can be achieved in that the positioning of the sensor element relative to the holding element can be simplified, which facilitates and simplifies the manufacturing process of the cell contact system.

[0017] According to an embodiment, the parameter is an operating voltage, the sensor element is designed as an electrical contact element of the sensor line, and the sensor element is fixed to the holding element via a welded connection.

[0018] As a result, a technical advantage can be achieved in that, using the operating voltage as a parameter, an important parameter can be measured, and this parameter can be used as a basis for drawing conclusions regarding the functioning of the battery module.

[0019] Furthermore, the welded connection allows for a rigid fixation of the sensor element to the holding element and an effective electrical connection between the two elements.

[0020] According to an embodiment, the parameter is temperature, the sensor element is designed as a temperature sensor, and the sensor element is thermally conductively fixed to the cell contact element via a holding element.

[0021] As a result, a technical advantage can be achieved in that important parameters can be measured depending on the operating temperature.

[0022] According to an embodiment, the temperature sensor is disposed on the printed circuit board, a spacer element is further formed on the printed circuit board, and the temperature sensor is fixed to the cell contact element by pressing a holding element onto the spacer element.

[0023] As a result, the technical advantage can be achieved that the spacer element allows the temperature sensor to be securely fixed to the holding element by clamping it without the holding element damaging the temperature sensor.

[0024] According to an embodiment, the temperature sensor is in thermally conductive contact with a surface of the holding element and / or the cell contact element by means of a bonding connection.

[0025] As a result, a technical advantage can be achieved in that the temperature sensor can be further fixed to the cell contact element by bonding. The thermal contact can further improve the measurement accuracy of the temperature sensor with respect to the operating temperature of the battery module.

[0026] According to an embodiment, the retaining element is formed from the cell contact element by a stamping and bending process.

[0027] As a result, the technical advantage can be achieved in that a technically simpler manufacturing process for the holding element and thus the cell contact system is possible.

[0028] According to a further aspect, there is provided a method for manufacturing a cell contact system according to one of the above embodiments, comprising the steps of: providing a carrier element having a plurality of cell contact elements, at least one of the cell contact elements having a retaining element; - fastening at least one sensor element of the measuring device to a holding element of the cell contact element; connecting the sensor elements to the connection contacts of the carrier structure via sensor lines; A method is provided that includes:

[0029] As a result, a technical advantage can be achieved in that an improved method can be provided for manufacturing a cell contact system having the above technical advantages.

[0030] According to a further aspect, a battery module is provided having a plurality of battery cells and a cell contact system according to one of the above embodiments.

[0031] As a result, a technical advantage can be achieved in that an improved battery module can be provided having a cell contact system with the above-mentioned technical advantages.

[0032] The invention will now be explained in more detail with the aid of the drawings. [Brief explanation of the drawings]

[0033] [Figure 1] FIG. 1 is a schematic diagram of a cell contacting system according to one embodiment. [Figure 2]FIG. 1 is a schematic diagram of a retaining element of a cell contacting system according to one embodiment. [Figure 3] 3 is a schematic view of the holding element of FIG. 2 together with a sensor element. [Figure 4] 10 is a schematic diagram of a retaining element of a cell contacting system according to a further embodiment. [Figure 5] 5 is a schematic view of the holding element of FIG. 4 together with a sensor element. [Figure 6] 10 is a schematic diagram showing a holding element of a cell contacting system together with a sensor element according to a further embodiment. [Figure 7] 10 is a schematic diagram showing a holding element of a cell contacting system together with a sensor element according to a further embodiment. [Figure 8] FIG. 1 is a schematic diagram of a sensor element designed as a temperature sensor, according to one embodiment. [Figure 9] 4 is a schematic diagram of a sensor element designed as a temperature sensor according to a further embodiment; [Figure 10] FIG. 10 is a schematic diagram of the sensor element of FIG. 9 fixed to a holding element. [Figure 11] 10 is a further schematic view of the sensor element of FIG. 9 fixed to a holding element. [Figure 12] 12 is a schematic cross-sectional side view of the sensor element of FIG. 11. [Figure 13] 1 is a flowchart of a method for manufacturing a cell contact system. [Figure 14] 1 is a schematic diagram of a battery module having a cell contact system. DETAILED DESCRIPTION OF THE INVENTION

[0034] FIG. 1 is a schematic diagram of a cell contacting system 100 according to one embodiment.

[0035] In the illustrated embodiment, the cell contact system 100 comprises a carrier structure 101 and a plurality of cell contact elements 103 formed on the carrier structure 101. The carrier structure 101 is preferably formed from an electrically insulating material, such as plastic.

[0036] The cell contact elements 103 function to make electrical contact to the plurality of battery cells of the battery modules connected to the cell contact system 100. The cell contact elements 103 are formed from a metallic material.

[0037] Each cell contact element 103 has a plurality of cell elements 105. Here, the cell elements 105 serve to contact the battery cells. Each individual cell element 105 has a connection opening 117 for connecting and fastening the battery cell, for example by means of a screw connection.

[0038] The individual cell elements 105 are all separated from one another by separating ridges 106. The individual cell contact elements 103 can be manufactured, for example, from sheet metal elements, where the separating ridges 106 can be formed by a corresponding bending or forming process.

[0039] The cell contact elements 103 are electrically connected to each other and to a plurality of power connections 119. Battery modules connected to the cell contact system 100 can be connected to additional battery modules or additional electrical components via the power connections 119.

[0040] According to one embodiment, the cell contacting system 100 is designed for a battery module of an electric vehicle, so that a battery module connected to the cell contacting system 100 can be connected to further components of the electric vehicle via power connections 119.

[0041] In the illustrated embodiment, the cell contacting system 100 further comprises a measurement device 107. The measurement device 107 functions to measure parameters of the battery modules connected to the cell contacting system 100. Thus, by measuring the parameters, the functionality of the battery modules can be monitored or checked.

[0042] To measure the parameter, the measuring device 107 has at least one sensor element 109 configured to measure the parameter, which is connected or fixed to the respective cell contact element 103 via a holding element 115 formed on the at least one cell contact element 103.

[0043] The retaining element 115 is not shown in detail in Figure 1. For a detailed description of the retaining element 115, please refer to Figures 2-12 and the associated discussion below.

[0044] In the illustrated embodiment, the measuring device 107 has a plurality of sensor elements 109. Here, the sensor elements 109 are each formed on the cell contact element 103 in such a way that only one sensor element 109 is arranged on the cell contact element 103 in each case.

[0045] The parameter to be measured may be the operating voltage or the operating temperature of the battery module. Accordingly, the sensor element 109 is configured to measure the voltage or the temperature of the cell contact element 103.

[0046] In the illustrated embodiment, the plurality of sensor elements 109 are electrically connected via sensor lines 111 to connecting contacts 113. The measuring device 107, in particular the sensor elements 109, can be connected to a monitoring device (not shown) via connecting contacts 113. The monitoring device can, for example, include a computing unit with installed software, by means of which the parameters and thus the functioning of the battery modules connected to the cell contacting system 100 can be monitored or checked.

[0047] The sensor line 111 can be designed as a standard electrical cable.

[0048] The sensor element 109 can be fixed to the holding element 115 by a welded or bonded connection.

[0049] The number of cell contact elements 103 in the cell contact system 100 may be different from the number shown in Figure 1. Each cell contact element 103 may have a number of cell elements 105 different from the number shown in Figure 1. Furthermore, the measurement device 107 may have any number of sensor elements 109 different from the number shown in Figure 1. The sensor elements 109 may also be formed at any location on each cell contact element 103.

[0050] Each sensor element 109 can in each case be connected to a connection contact via an individual sensor line 111. Alternatively, several sensor elements 109 can be connected to a connection contact 113 via a common sensor line 111.

[0051] FIG. 2 is a schematic diagram of a retaining element 115 of a cell contacting system 100 according to one embodiment.

[0052] In the illustrated embodiment, the retaining element 115 includes a bent element 125. The bent element 125 includes a bent portion 127 and a contact portion 129 having a contact area 123. The bent element 125 is connected to each cell contact element 103 by the bent portion 127.

[0053] In the illustrated embodiment, the retaining elements 115 are manufactured from the respective cell contact elements 103 by a stamping and bending process.

[0054] In the illustrated embodiment, the contact area 123 is spaced from the surface 121 of each cell contact element 103. The contact area 123 functions to bring the corresponding sensor element 109 into contact with the retaining element 115.

[0055] The contact area 123 in the illustrated embodiment is disposed perpendicular to the surface 121 of the cell contact element 103. However, the contact area 123 may be at any other angle relative to the surface 121.

[0056] In the illustrated embodiment, the contact portion 129 has a rectangular parallelepiped shape. However, this is merely exemplary; other shapes are contemplated as well.

[0057] FIG. 3 is a further schematic view of the holding element 115 of FIG.

[0058] In the illustrated embodiment, the sensor element 109 is fixed to the holding element 115 by a welded connection 132. The sensor element 109 is positioned adjacent to the holding element 115 with respect to the x-axis of the illustrated coordinate system and contacts the holding element 115 via a contact area 123.

[0059] The welded connection 132 is formed by two weld points in the upper region of the contact portion 129 of the bending element 125 with respect to the z-axis.

[0060] The sensor element 109 in the illustrated embodiment is designed as a compressed end region of the sensor line 111. Alternatively, the sensor element 109 can be designed as a bundle of twisted wires or as a cable end sleeve.

[0061] The operating voltage of a battery module connected to the cell contact system 100 can be measured by the sensor element 109 shown by electrical contact with the holding element 115 .

[0062] The sensor line 111 in the illustrated embodiment is designed as a commercially available conductive cable with an insulator 145 .

[0063] The spacing of the contact area 123 from the surface 121 of the cell contact element 103 allows the sensor element 109 fixed to the contact area 123 to be similarly spaced from the surface 121. Thus, thickness differences between the sensor line 111 and the sensor element 109 that may be caused by, for example, the insulator 145 can be compensated for.

[0064] FIG. 4 is a schematic illustration of a retaining element 115 of a cell contacting system 100 according to a further embodiment.

[0065] 2 and 3, the retaining element 115 includes a further bending element 126 positioned opposite the bending element 125 with respect to the x-axis. The further bending element 126 includes a further bending portion 128 and a further contact portion 130 having the contact area 124.

[0066] The two contact areas 123, 124 are disposed opposite to each other with respect to the x-axis.

[0067] The two contact areas 123, 124 are substantially parallel to each other and formed perpendicular to the surface 121 of the cell contact element 103. A receiving space 131 for receiving the sensor element 109 is defined between the two bending elements 125, 126, in particular between the two contact areas 123, 124.

[0068] In the illustrated embodiment, both bending elements 125, 126 are formed by a stamping and bending process from the cell contact element 103. In the illustrated embodiment, the further bending element 126 is formed with smaller dimensions than bending element 125. Alternatively, both bending elements 125, 126 may have the same shape and dimensions.

[0069] FIG. 5 is a schematic diagram showing the holding element 115 of FIG.

[0070] 5, the sensor element 109 is inserted into the receiving space 131 of the holding element 115 and is therefore electrically connected to the two contact areas 123, 124 of the two bending elements 125, 126. The sensor element 109 is clamped in the receiving space 131 between the two contact areas 123, 124 by the two bending elements 125, 126.

[0071] The two bending elements 125, 126 are configured to apply opposing restoring forces to the sensor element 109 inserted into the receiving space 131 via the bending portions 127, 128.

[0072] 3, the sensor element is fixed to the contact portion 129 of the bending element 125 by a welded connection 132. Alternatively, the sensor element 109 can be fixed to the further contact portion 130 of the further bending element 126 or to both bending elements 125, 126 by a welded connection.

[0073] FIG. 6 is a further schematic diagram showing a holding element 115 of a cell contacting system 100 together with a sensor element 109 according to a further embodiment.

[0074] In the illustrated embodiment, the retaining element 115 includes only one bending element 125 having a bending portion 127 and a contact portion 129 with a contact area 123. In the illustrated embodiment, the contact area 123 is disposed parallel or approximately parallel to the surface 121 of the cell contact element 103.

[0075] The contact area 123 is spaced apart from and faces the surface 121. The sensor element 109 is fixed to the contact area 123 by a welded connection 132. The sensor element 109 is therefore located in the space between the surface 121 and the contact area 123 of the cell contact element 103.

[0076] The weld point of the weld connection 132 is formed in the region of the contact portion 129 of the bending element 125 located opposite the contact region 123 .

[0077] FIG. 7 is a further schematic diagram showing a holding element 115 of a cell contacting system 100 together with a sensor element 109 according to a further embodiment.

[0078] The illustrated embodiment is based on the embodiment of Figure 6. Unlike the embodiment shown in Figure 6, in this embodiment the contact area 123 is arranged parallel or approximately parallel to the surface 121 of the cell contact element 103, but points away from the surface 121. The sensor element 109 is therefore arranged to lie on the contact area 123 with respect to the z-axis and to be fixed to the holding element 115 by means of a welded connection.

[0079] Additionally, contact area 123 is spaced less from surface 121 than in the embodiment of FIG.

[0080] In the above embodiment, the contacts each have a rectangular parallelepiped shape. Alternatively, other shapes are contemplated. The size and shape of the contact areas 123, 124 may vary depending on the application and design of the sensor element 109.

[0081] The sensor element 109 in the illustrated embodiment is formed from a compressed rectangular section of the cable end portion of the sensor line 111. Alternatively, a bundle of twisted wires or a cable end sleeve are equally conceivable as the sensor element 109 for measuring the operating voltage.

[0082] FIG. 8 is a schematic diagram of a sensor element 109 designed as a temperature sensor 133, according to one embodiment.

[0083] In the illustrated embodiment, the sensor element 109 includes a temperature sensor 133 for measuring the operating temperature of the battery module connected to the cell contacting system 100 .

[0084] Here, the sensor element 109 includes a printed circuit board 135 having a contact field 137 for electrically contacting a temperature sensor 133 by at least one sensor line 111. In the illustrated embodiment, the temperature sensor 133 is electrically connected to two sensor lines 111 via the contact field 137.

[0085] As in the above embodiment, the sensor line 111 is designed as a standard conductive cable with an insulator 145 and has a connection element 139, which is realized, for example, by a non-insulated part 147, via which the sensor line 111 is conductively connected to the contact field 137, for example by a soldered connection.

[0086] FIG. 9 is a further schematic illustration of a sensor element 109 designed as a temperature sensor 133 according to a further embodiment.

[0087] The illustrated embodiment is based on the embodiment of Fig. 8. In the illustrated embodiment, a spacer element 141 is further formed on the printed circuit board 135 between the two sensor lines 111. The spacer element 141 is higher than the temperature sensor 133 in terms of the z-axis.

[0088] In the illustrated embodiment, the spacer element 141 has a rectangular parallelepiped shape. Other shapes are possible as well. The dimensions of the spacer element 141 can be adapted according to the requirements and design of the temperature sensor 133. However, one requirement is that the spacer element 141 is taller than the temperature sensor 133 with respect to a z-axis aligned perpendicular to the surface of the printed circuit board 135.

[0089] In the illustrated embodiment, the sensor element 109 further comprises a potting compound 143 that is disposed on the printed circuit board 135 and covers the temperature sensor 133. The potting compound 143 may be formed from potting materials known from the prior art, such as silicone or polyurethane compounds.

[0090] FIG. 10 is a schematic diagram of the sensor element 109 of FIG. 9 secured to a holding element 115.

[0091] 6 and 7, the retaining element 115 has a bending element 125 having a bending portion 127 and a contact portion 129 with a contact area 123. The contact area 123 is formed parallel to and facing the surface 121 of the cell contact element 103.

[0092] A receiving space 131 for receiving the sensor element 109 is defined between the surface 121 and the contact area 123 .

[0093] The sensor element 109 is inserted into the receiving space 131 such that the spacer element 141 contacts the contact area 123. The bent portion 127 of the bent element 125 allows the holding element 115 to apply a restoring force to the spacer element 141 via the contact portion 129, thus clamping the sensor element 109 in the receiving space 131 and fixing it to the holding element 115.

[0094] In the illustrated embodiment, the sensor line 111 is electrically connected to the contact field 137 by a soldered connection 149 through a corresponding connection 139 formed by an uninsulated portion 147 of the cable in the illustrated example.

[0095] According to one embodiment, the temperature sensor 133 may further be thermally conductively connected to the cell contact element 103 by a bonding connection (not shown). The thermal connection may be established directly via the surface 121 of the cell contact element 103.

[0096] Alternatively or additionally, thermal contact between the temperature sensor 133 and the holding element 115 may occur, and may in particular be established via the contact area 123 of the contact portion 129 .

[0097] FIG. 11 is a further schematic illustration of the sensor element 109 of FIG. 9 fixed to a holding element 115.

[0098] The embodiment shown in Figure 11 is based on the embodiment of Figure 10, but differs from it in that the sensor element 109 is arranged in a mirror-inverted manner with respect to the z-axis in the receiving space 131 of the bending element 125. Here, the underside of the printed circuit board 135 contacts the contact area 123 of the bending element 125, and the spacer element 141 contacts the surface 121 of the cell contact element 103.

[0099] The clamping of the sensor element 109 into the receiving space 131 of the bending element 125 is achieved in the same way as in the embodiment of FIG.

[0100] FIG. 12 is a schematic cross-sectional side view of the sensor element 109 of FIG.

[0101] 12 shows that the spacer elements 141 extend at least partially through the printed circuit board, so that the spacer elements 141 contact both the surfaces 121 of the cell contact elements 103 and the contact areas 123 of the bending elements 125 or retaining elements.

[0102] The potting element 143 similarly contacts the surface 121 of the cell contact element 103. On the other hand, the temperature sensor 133 remains spaced apart from the surface 121 of the cell contact element 103 to avoid damage to the temperature sensor due to clamping the sensor element 109 into the receiving space 131 of the holding element 115.

[0103] In all of the illustrated embodiments, the temperature sensor 133 may further be in thermal contact with the cell contact element 103 by a bonded connection (not shown).

[0104] The temperature sensor 133 may be formed, for example, by a thermistor.

[0105] FIG. 13 is a flow chart of a method 200 for manufacturing the cell contact system 100 .

[0106] In a first method step 201, a cell contacting system 100 according to one of the above embodiments is first provided.

[0107] The cell contact system 100 comprises a carrier structure 101 having a plurality of cell contact elements 103 .

[0108] At least one retaining element 115 according to the above embodiments is formed on at least one cell contact element 103 .

[0109] Thus, providing 201 the cell contact system 100 includes a stamping and bending process to form at least one retaining element 115 from at least one cell contact element 103 .

[0110] In a further method step 203 , at least one sensor element 109 is arranged on at least one holding element 115 .

[0111] For this purpose, according to the above-described embodiment, the sensor element 109 can be arranged in the contact area 123 of the holding element 115. For this purpose, the sensor element 109 can be positioned in the contact area 123 or inserted into the receiving space 131 and clamped to the cell contact element 103 by the holding element 115.

[0112] After the sensor element 109 is placed or fixed to the holding element 115, the sensor element 109 can be fixed to the holding element 115 and thus to the cell contact element 103 by a welded or bonded connection, so that an electrical and / or thermal connection of the sensor element 109 to the cell contact element 103 can be achieved.

[0113] According to the above embodiment, the sensor element 109 can be designed to measure the operating voltage of the battery module connected to the cell contact system 100 .

[0114] Alternatively, the sensor element 109 may be configured to measure the operating temperature of the battery module, and to this end, the sensor element 109 may include a temperature sensor 133 according to the embodiments described above.

[0115] In a further method step 205 , at least one sensor element 109 arranged or fixed on the holding element 115 can be electrically connected via a sensor line 111 to a connection contact 113 .

[0116] Here, the sensor line 111 can be realized by a standard electrical cable available commercially.

[0117] Connection contacts 113 formed on the carrier structure 101 allow a monitoring device to be electrically connected to the cell contact system 100. The monitoring device is designed to monitor parameters of the battery module that are represented by operating voltage and / or operating current.

[0118] The monitoring device may, for example, include a corresponding computing unit having installed thereon corresponding software for monitoring and evaluating the parameters.

[0119] FIG. 14 is a schematic diagram of a battery module 300 having the cell contact system 100.

[0120] The battery module 300 comprises a plurality of battery cells 301. The cell contacting system 100 is electrically connected to the plurality of battery cells 301 via a plurality of cell contact elements 103. The connection can be realized, for example, by a screw connection through connection openings 117 of the cell contact elements 103. To measure parameters of the battery module 300, the cell contacting system 100 further comprises a measuring device 107 in which a plurality of sensor elements 109 are arranged on the cell contact elements 103. The sensor elements 109 are connected to connection contacts 113 via sensor lines 111.

[0121] The individual battery cells 301 of the battery module 300 are connected to each other via the cell contact elements 103 of the cell contact system 100. The battery cells 301 can be connected to each other in series and in parallel via the cell contact system 100.

[0122] The battery module 300 can be designed in particular as a battery module 300 for an electric vehicle. [Explanation of symbols]

[0123] 100 Cell Contact System 101 Carrier Structure 103 Cell Contact Elements 105 Cell Elements 106 Separation ridge 107 Measuring Equipment 109 Sensor Elements 111 Sensor Line 113 connecting contact 115 Holding Element 117 Connection opening 119 Power Connection 121 Surface 123 Contact area 124 Further Contact Areas 125 bending element 126 Further bending elements 127 Bend 128 More bends 129 Contact Part 130 Further Contacts 131 Reception Space 132 Welded joint 133 Thermistor 135 Printed Circuit Board 137 Contact field 139 Connecting Elements 141 spacer element 143 Potting compounds 145 Insulators 147 Non-insulated part 149 Soldered joints 200 ways 201 Establishing a career element 203 Fixing the sensor element 205 Connecting Sensor Elements 300 Battery Module 301 Battery Cell

Claims

1. A cell contact system (100) for an electric battery module (300), comprising: a carrier structure (101); a plurality of cell contact elements (103) made of a metallic material arranged on the carrier structure (101) for electrically contacting a plurality of battery cells (301) of the electric battery module (300); a plurality of power connections (119) electrically connected to said cell contact elements (103); a measuring device (107) for measuring at least one parameter of the electric battery module (300) connected to the cell contacting system (100); The measuring device (107) includes at least one sensor element (109) for measuring the parameter, the sensor element (109) being connected to connection contacts (113) of the cell contacting system (100) via at least one sensor line (111), and a monitoring device can be connected to the measuring device (107) via the connection contacts (113) to monitor the parameter, the sensor element (109) being connected to at least one cell contacting element (103) and configured to measure the parameter, the sensor element (109) being fixed to the cell contacting element (103) via a holding element (115) formed on the cell contacting element (103), the retaining element (115) is stamped and bent from the cell contact element (103); the holding element (115) is designed as a clip element and is configured to clamp the sensor element (109) to the cell contact element (103), the retaining element (115) comprises a first bent element (125) including a first bent portion (127), the first bent element (125) being connected to the cell contact element (103) by the first bent portion (127); the retaining element (115) comprises a second bent element (126) including a second bent portion (128), the second bent element (126) being connected to the cell contact element (103) by the second bent portion (128); the first bending element (125) and the second bending element (126) are disposed opposite each other; A cell contact system (100) wherein the first bending element (125) and the second bending element (126) are configured to apply opposing restoring forces to the sensor element (109) inserted into the receiving space (131) of the holding element (115) via the first bending portion (127) and the second bending portion (128).

2. The first bending element (125) includes a first contact portion (129) including a first contact area (123), the second bending element (126) includes a second contact portion (130) that includes a second contact area (124); 2. The cell contact system (100) of claim 1, wherein the holding element (115) is configured so that the sensor element (109) inserted into the receiving space (131) is electrically connected to the first contact area (123) and the second contact area (124).

3. 2. The cell contact system (100) of claim 1, wherein the retaining element (115) defines a contact area (123) for contacting the sensor element (109), the contact area (123) being formed at a distance from a surface (121) of the cell contact element (103).

4. 2. The cell contact system (100) of claim 1, wherein the holding element (115) defines the receiving space (131) for receiving the sensor element (109), and the sensor element (109) can be inserted into the receiving space (131) to fix the sensor element (109) to the holding element (115).

5. 2. The cell contact system (100) of claim 1, wherein the parameter is a voltage or a current, the sensor element (109) is designed as an electrical contact element of the sensor line (111), and the sensor element (109) is fixed to the holding element (115) via a welded connection (132).

6. A cell contact system (100) for an electric battery module (300), comprising: a carrier structure (101); a plurality of cell contact elements (103) made of a metallic material arranged on the carrier structure (101) for electrically contacting a plurality of battery cells (301) of the electric battery module (300); a plurality of power connections (119) electrically connected to said cell contact elements (103); a measuring device (107) for measuring at least one parameter of the electric battery module (300) connected to the cell contacting system (100); The measuring device (107) includes at least one sensor element (109) for measuring the parameter, the sensor element (109) being connected to connection contacts (113) of the cell contacting system (100) via at least one sensor line (111), and a monitoring device can be connected to the measuring device (107) via the connection contacts (113) to monitor the parameter, the sensor element (109) being connected to at least one cell contacting element (103) and configured to measure the parameter, the sensor element (109) being fixed to the cell contacting element (103) via a holding element (115) formed on the cell contacting element (103), the retaining element (115) is stamped and bent from the cell contact element (103); the holding element (115) is designed as a clip element and is configured to clamp the sensor element (109) to the cell contact element (103), the retaining element (115) comprises a first bending element (125) including a first contact portion (129) having a first bending portion (127) and a first contact area (123), the first bending element (125) being connected to the cell contact element (103) by the first bending portion (127); a receiving space (131) for receiving the sensor element (109) is defined between the surface (121) of the cell contact element (103) and the first contact area (123); said parameter being temperature and said sensor element (109) being designed as a temperature sensor; The temperature sensor (133) is disposed on a printed circuit board (135), and a spacer element (141) is formed on the printed circuit board (135); the retaining element (115) is configured to apply a restoring force to the spacer element (141) via the first contact portion (129); A cell contact system (100), wherein the temperature sensor (133) is fixed to the cell contact element (103) by the holding element (115) being pressed against the spacer element (141).

7. A cell contact system (100) as described in claim 6, wherein the sensor element (109) is thermally fixed to the cell contact element (103) via the retaining element (115).

8. 7. The cell contact system (100) of claim 6, wherein the temperature sensor (133) is in thermally conductive contact with the surface (121) of the holding element (115) and / or the cell contact element (103) by a bonded connection.

9. A method (200) for manufacturing a cell contact system (100) according to claim 1 or claim 6, comprising the steps of: Providing (201) a carrier structure (101) having a plurality of cell contact elements (103), at least one cell contact element (103) having a holding element (115); Fixing (203) at least one sensor element (109) of a measuring device (107) to said holding element (115) of said cell contact element (103); and connecting (205) said sensor element (109) to connection contacts (113) of said carrier structure (101) via sensor lines (111).

10. The method described in claim 9, wherein the retaining element (115) is formed from the cell contact element (103) by a punching and bending process.

11. A plurality of battery cells (301); An electric battery module (300) comprising a cell contact system (100) according to claim 1 or claim 6.

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