CN118302898A - Cell contact system for a battery module and method for producing such a cell contact system - Google Patents

Abstract

A cell contact system (15) for a battery module (10) having a plurality of battery cells (12) has: a plurality of cell connectors (16) for conductively connecting cell terminals (36) of different battery cells (12); and a circuit board (18) having a plurality of signal lines for conducting the measured values on one of the plurality of cell connectors (16) to the signal management circuit (20) or the connection interface (22), respectively. The cell contact-through system further comprises at least one temperature detection device (30) for measuring the temperature of the battery cells (12) on one of the plurality of cell connectors (16), which is formed by a circuit board edge section (31) integrated with the circuit board (18) protruding from the circuit board into the region of the respective cell connector (16), a temperature sensor (32) mounted on the circuit board edge section (31), and a cell connector overlap section (33) of the respective cell connector (16) overlapping the temperature sensor (32) on the circuit board edge section (31).

Description

Cell contact system for a battery module and method for producing such a cell contact system

Technical Field

The invention relates to a cell contact system for a battery module having a plurality of battery cells, to a battery module having such a cell contact system, and to a method for producing such a cell contact system.

Background

A battery management controller (CMC) that monitors individual battery cells of a battery module, for example, to charge the battery cells, balance voltage and state of charge, regulate temperature, etc., requires a cell touch-through system to touch the battery cells to obtain corresponding measurement signals of the potential and temperature of the battery cells. A cell contact system generally comprises a plurality of cell connectors for electrically connecting the cell terminals of different battery cells and a circuit board with a plurality of signal lines for conducting measured values on one of the plurality of cell connectors to a signal management circuit or a connection interface, respectively. Conventional cell contact systems typically require significant manufacturing and installation effort to attach the signal source to the signal conduction system formed by the circuit board and insert the temperature sensing device. In conventional cell contact systems, the temperature detection device generally comprises a temperature sensor which is mounted on the cell connector or on a carrier element fixed to the cell connector and is coupled to the circuit board by a connecting element. As is known, the fastening to the cell connector is carried out, for example, by gluing, screwing, soldering or welding and/or by means of hooks or springs.

Disclosure of Invention

The object of the present invention is to create an improved cell contact system which can be equipped with a temperature detection device in a simple manner.

This object is achieved by a cell contact system as defined in independent claim 1. Particularly advantageous embodiments and developments of the invention are the subject matter of the dependent claims.

The cell contact-through system for a battery module having a plurality of battery cells according to the invention comprises: the battery cell connectors are used for conducting connection with battery cell terminals of different battery cells; and a circuit board having a plurality of signal lines for conducting the measured value on one of the plurality of cell connectors to a signal management circuit or a connection interface, respectively. The plurality of cell connectors serve as current conduction systems and the circuit board serves as a signal conduction system. The cell contact system further comprises at least one temperature detection device for measuring the temperature of the battery cells on one of the plurality of cell connectors. According to the invention, the at least one temperature detection device is formed by: a circuit board edge section integrated with the circuit board, which protrudes from the circuit board into the region of the respective cell connector; a temperature sensor mounted on the edge section of the circuit board; and a cell connector overlap section of the corresponding cell connector that overlaps the temperature sensor on the circuit board edge section.

The temperature sensing device using this design has several advantages. By integrating the temperature sensor on the circuit board by means of the protruding circuit board edge section, no additional measuring element separate from the circuit board or on a separate circuit board, nor an additional connecting element between the measuring element and the circuit board is required, so that fewer components and fewer mounting steps are required for mounting the temperature detection device, which makes the construction of the cell contact system simpler/less complex and allows for a simpler and more cost-effective production and mounting of the cell contact system. The constructional height of the cell contact-through system can also be reduced with the temperature detection device according to the invention compared with the use of conventional systems, since flat mounting structures can be used. The structure according to the invention of the temperature detection device can also be used particularly well in connection with a rigid circuit board, which gives further advantages, since the rigid circuit board can be produced and installed in a simple manner and also components, such as electronic circuit elements, can be mounted thereon. By means of a cell contact system which can be produced more simply, the entire battery module can also be produced more simply and more reliably.

According to the invention, the cell touch-through system comprises a special temperature detection device. In principle, the design can be combined with any basic structure of the cell connector, any circuit board (preferably a rigid circuit board, but also optionally a flexible circuit board), any connection structure between the voltage tapping point on the cell connector and the circuit board, and any size (i.e. in particular the number and size of the battery cells) of the battery module. Furthermore, the cell contact system may comprise any number of temperature detection means designed according to the invention for measuring the temperature of a plurality (some or even all) of cell connectors, and the temperature detection means may in principle comprise any type of temperature sensor (e.g. NTC temperature sensor, optionally SMD version).

In a preferred embodiment of the invention, the at least one temperature detection device further comprises a heat conducting layer between the temperature sensor and the cell connector overlap section of the respective cell connector. The heat conductive layer is used to transfer heat from the cell connector to the temperature sensor. The heat conducting layer of the temperature detection device can be arranged on the temperature sensor or on the cell connector overlapping section of the corresponding cell connector.

The cell connector overlap section of the temperature sensing device preferably (but not necessarily) overlaps the entire circuit board edge section of the temperature sensing device.

Preferably, the structure of the temperature detecting device may be configured such that at least one of the following aspects is satisfied: (i) The cell connector overlap sections extend (at least partially) above the remaining contact areas of the respective cell connectors; (ii) The circuit board edge section is positioned in substantially the same plane as the circuit board or below the circuit board; and (iii) the circuit board edge section is positioned in substantially the same plane as or below the respective cell connector. These descriptions refer to the upper side of the component, respectively, remote from the battery cells. Alternatively or additionally, the structure of the temperature detection device is preferably also configured such that the edge section of the circuit board has a layer thickness that is substantially identical to or lower than the layer thickness of the circuit board.

In one embodiment of the invention, the plurality of cell connectors each have two contact areas for the cell terminals of one battery cell and a compensation area between the two contact areas. In this case, the temperature detection device is arranged in the region of one of the two contact regions of the respective cell connector.

The invention also relates to a battery module having a plurality of battery cells and the above-described battery cell contact system according to the invention. The same advantages as explained above in relation to the cell contact system according to the invention can be achieved with this battery module.

The battery cells are connected to each other by a cell connector of the cell contact system and can be connected to a consumer or a charging system by an electrical connection of the battery module. The battery cells and the cell activation system are preferably both accommodated in a module housing. The present invention is not limited to a particular type, number, size or arrangement of the plurality of battery cells. In particular, the invention is also applicable to lithium ion battery modules.

The battery module generally also has at least one battery module controller for operating the battery module, which is connected to at least one signal management circuit (integrated into the circuit board or connected as an external circuit to the circuit board via a connection interface). The module controller performs, for example, a charging process, a balancing voltage and a charging state, a temperature regulation process, such as, in particular, a cooling process, etc., at least in part, on the basis of the measurement signals obtained by the cell-contacting system.

The invention can be advantageously used for battery modules of vehicles, in particular electric and hybrid vehicles, and in particular motor vehicles and motorcycles, and also for battery modules of energy storage systems and other electrical devices, such as electronic household appliances.

The invention also relates to a method for equipping a battery module having a plurality of battery cells with a cell contact system having a plurality of cell connectors for electrically connecting the cell terminals of different battery cells and a circuit board having a plurality of signal lines for conducting measured values on one of the cell connectors to a signal management circuit or a connection interface, respectively, comprising at least one temperature detection device for measuring the temperature of the battery cells on one of the cell connectors, i.e. a method for producing the cell contact system. The method comprises the following steps: providing the circuit board with at least one integrated circuit board edge section such that it then protrudes from the circuit board into the region of the respective cell connector in the installed state of the cell contact-through system; mounting a temperature sensor on the edge section of the circuit board; and providing the respective cell connectors with a cell connector overlap section such that it then overlaps the temperature sensor on the circuit board edge section in the installed state of the cell contact-through system. The same advantages as explained above in relation to the cell contact system according to the invention can be achieved with this method. Preferably, the method further comprises inserting a thermally conductive layer between the temperature sensor and the cell connector overlap section of the respective cell connector. The components of the temperature detection device are furthermore configured and positioned as described above in relation to the cell contact system.

Drawings

The subject matter of the present invention is defined by the appended claims. The above and other features and advantages of the present invention will be better understood from the following description of a preferred, non-limiting embodiment with reference to the accompanying drawings. Here, most schematically:

fig. 1 shows a perspective top view of a battery module according to one embodiment of the invention;

Fig. 2 illustrates a partial perspective top view of a cell activation system for the battery module of fig. 1 in accordance with one embodiment of the present invention;

FIG. 3 shows a partial perspective top view of FIG. 2, wherein the cell connector is not placed in the area of the temperature sensing device; and

Fig. 4 shows a perspective top view of the cell connector of fig. 2 placed in the region of the temperature detection device.

Detailed Description

Referring to fig. 1-4, one embodiment of a battery module having a cell contact system according to the present invention is illustrated.

The battery module 10 has a plurality of battery cells (e.g., lithium ion battery cells) 12. In the present embodiment, the battery cells 12 are arranged side by side to each other in the up-down direction of fig. 1 and have one negative electrode tab in the left or right end region of fig. 1 and one positive electrode tab in the right or left end region of fig. 1, respectively, wherein the negative electrode tab and the positive electrode tab of the battery cell 12 are alternately arranged such that the negative electrode tab of one battery cell is located beside the positive electrode tab of an adjacent battery cell.

The battery module 10 also has a cell contact system 15, which is arranged above the battery cells 12, preferably on the carrier plate 14. The battery cells 12 are typically arranged in a module housing (not shown) together with a cell contact system 15.

The cell contact system 15 has a plurality of cell connectors 16, which form a current conduction system. In the present exemplary embodiment, each cell connector 16 has two contact regions 16a, 16b and a (preferably elastic) compensation region 16c between the two contact regions 16a, 16b and is attached to the battery cells 12, so that each cell connector couples the negative terminal of one battery cell 12 to the positive terminal of an adjacent battery cell 12 via its two contact regions 16a, 16b, respectively, in order to achieve a serial connection of the battery cells 12 in the battery module 10. The battery cells 12 can also be connected to an electrical consumer or a charging system via electrical connections of the battery module 10.

The cell contact system 15 also has a (preferably rigid) circuit board 18 which forms a signal transmission system and is arranged over the entire length of the battery cell assembly on the battery cells 12 in the region between the two rows of cell connectors 16. The shape and size of the circuit board 18 can in principle be adapted to any configuration of battery modules, in particular any arrangement, size and number of battery cells. In this embodiment, the circuit board 18 is configured to be substantially rectangular. As shown in fig. 1, the circuit board 18 preferably also has holes as ventilation openings 19 to support the cooling process of the battery cells 12 located thereunder.

Although not shown in fig. 1 for simplicity and clarity, the circuit board 18 has a plurality of signal traces that respectively connect the signal sources of the electrical cell connectors 16 with the electronic signal management circuit 20. For example, the signal management circuit 20 is configured to perform a voltage measurement method and evaluate a measurement signal obtained from a signal source of the cell connector 16. In this embodiment, the signal management circuit 20 is integrated on the circuit board 18 and is connected to a connection interface 22 through which the signal management circuit 20 can be connected to the battery module controller. For example, the battery module controller is used to perform charging processes, balancing voltages and states of charge, temperature regulation processes, such as in particular cooling processes, etc., wherein these processes are performed at least partially on the basis of measurement signals obtained by the cell contact-through system 15 or measurement values obtained by the signal management circuit 20 thereof. In an alternative embodiment of the invention, the signal management circuit 20 may also be designed external to the circuit board 18. In this case, the signal lines of the circuit board 18 are directly connected to the connection interface 22, and an external signal management circuit is coupled to the connection interface 22 of the circuit board 18 and is also coupled to the battery module controller via another connection interface. The cell contact system 15, signal management circuit 20, and battery module controller may also be collectively referred to as a Cell Management Controller (CMC).

As shown in fig. 1 and 2, there are two sources of signals in the cell contact system 15. In one aspect, all (or alternatively only a majority) of the cell connectors 16 each have a voltage tap 24 as a first signal source type for measuring the voltage of the battery cells 12. In addition, a temperature measuring device 30 is provided in each of the pair (or alternatively all) of the cell connectors 16 as a second signal source type for measuring the temperature of the battery cells 12.

The voltage tap 24 may be formed directly from the contact areas 16a, 16b of the cell connector 16, respectively. To connect the voltage tapping point 24 with the signal lines of the circuit board 18, at least one (in this embodiment two each) connecting element 26 is coupled to corresponding contact points 28a, 28b on the circuit board 18 and the cell connector 16. The structure of these connecting elements 26 is essentially arbitrary within the scope of the invention. As shown in fig. 2 to 4, for example, the connection element 26 may be configured as a press-fit connection element which is made of metal and is pressed into a corresponding contact point 28a in the form of a hole on the circuit board 18 and into a corresponding contact point 28b in the form of a hole on the cell connector 16. If the upper side of the circuit board 18 and the upper sides of the contact areas 16a, 16b of the cell connector 16 lie in substantially the same plane, the connection sections of the connection element 26 are, for example, configured such that the two press-in sections of the connection element lie at substantially the same height. Furthermore, the connecting section of the connecting element 26 can be designed to be at least partially elastic.

Referring to fig. 2-4, the temperature measurement device 30 will now be described in more detail by way of example.

As best shown in fig. 3, the temperature detection device 30 has a circuit board edge section 31 integrated with the circuit board 18, which protrudes from the circuit board 18 into the region of the respective cell connector 16 and on which a temperature sensor 32 is mounted. In other words, the circuit board edge section 31 protrudes from the edge of the base shape of the circuit board 18, which is substantially rectangular in this embodiment. The temperature sensor 32 is for example an NTC resistor or an NTC thermistor, optionally in SMD version. As best shown in fig. 2 and 4, the temperature sensing device 30 further includes a cell connector overlap section 33 of the corresponding cell connector 16 that overlaps the temperature sensor 32 on the circuit board edge section 31. Preferably, the cell connector overlap section 33 overlaps substantially the entire circuit board edge section 31. Since the circuit-board edge section 31 with the temperature sensor 32 is an integral part of the circuit board 18, no additional connection elements (such as the connection element 26 for the voltage tapping point 24) to the circuit board 18 are required for the signal source for temperature detection.

As shown in fig. 2, the temperature sensing device 30 preferably further includes a thermally conductive layer 34 between the temperature sensor 32 and the cell connector overlap section 32 so that the temperature sensor 32 can more effectively and reliably measure the temperature of the cell connector (and thus the battery cell). The thermally conductive layer 34 may optionally be disposed on the temperature sensor 32 or on the cell connector overlap section 32 of the respective cell connector 16. The thermally conductive layer 34 covers at least the temperature sensor 32 and also optionally the sampled cell connector overlap section 33.

As can be seen from fig. 2 to 4, in the case of the installation of the cell contact-through system 15, the circuit board 18 (with the circuit board edge section 31 and the temperature sensor 32 integrated thereon) is first placed on the carrier plate 14 above the battery cells 12. The cell connector 16 is then placed onto the carrier plate 14 in the region of the cell terminals 26 of the battery cells 12. The circuit board edge sections 31 of the temperature detection device 30 are each located in one section of the cell terminals 26, in which section the contact areas 16b of the cell connectors 16 are then positioned. Thus, as shown in fig. 2 and 4, the cell connector 16 has a cell connector overlap section 34 in a section of its contact region 16 b. Then, after the placement of the cell connector 16, the voltage tapping point 24 of the cell connector 16 is also coupled to its contact points 28a, 28b by means of the connecting element 26 to be connected to the circuit board 18.

In the exemplary embodiments of fig. 2 to 4, the upper side of the circuit-board edge section 31 and the upper side of the circuit board 18 lie in substantially the same plane, wherein the layer thickness of the circuit-board edge section 31 can be slightly smaller than the layer thickness of the circuit board 18. In particular, in the case of a thinner printed circuit board edge section 31, its upper side can also be positioned slightly below the upper side of the printed circuit board 18 instead. Furthermore, the upper side of the circuit board edge section 31 is preferably located slightly below the upper side of the respective cell connector 16, while the cell connector overlap section 33 preferably extends only slightly above the remaining contact area 16b of the respective cell connector 16. In this way, a relatively flat design of the cell contact system 15 can be achieved overall in the region of the temperature detection device 30. The circuit-board edge section 31 and/or the cell-connector overlap section 34 can furthermore be configured to be at least partially elastic. By means of this elasticity, it is possible, for example, to compensate for movements and expansions of the battery cells 12 which may occur during charge and discharge cycles.

The described battery module 10 with the cell contact-through system 15 according to the invention can be used, for example, for vehicles, in particular electric and hybrid vehicles, and in particular motor vehicles and motorcycles, or for energy storage systems or other electrical devices, such as electronic household appliances.

The subject matter of the present invention is defined by the appended claims. The examples explained above are only for a better understanding of the invention, but should not limit the scope of protection defined by the claims. Other implementations are possible within the scope of the invention, particularly by omitting individual features from or adding additional features to the above examples.

List of reference numerals

10. Battery module

12. Battery cell

14. Carrier plate

15. Cell touch-on system

16. Battery cell connector (Current conduction system)

Contact area of 16a, 16b cell connector

Compensation area of 16c cell connector

18. Circuit board (Signal conduction system)

19. Ventilation opening

20. Signal management circuit

22. Connection interface

24. Voltage tapping point

26. Connecting element

28A contact points for connection elements on a circuit board

Connection element contacts on 28b cell connector

30. Temperature detecting device

31. Edge section of circuit board

32. Temperature sensor

33. Cell connector overlapping section

34. Heat conducting layer

36. Battery cell terminal

Claim (modification according to treaty 19)

1. A cell contact system (15) for a battery module (10) having a plurality of battery cells (12), comprising:

a plurality of cell connectors (16) for conductively connecting cell terminals (36) of different battery cells (12); and

A circuit board (18) having a plurality of signal lines for conducting measured values on one of the plurality of cell connectors (16) to a signal management circuit (20) or a connection interface (22),

Wherein the cell contact system (15) further comprises at least one temperature detection device (30) for measuring the temperature of the battery cell (12) at one of the plurality of cell connectors (16),

Wherein the at least one temperature detection device (30) is formed by:

A circuit board edge section (31) integrated with the circuit board (18), which projects from the circuit board into the region of the respective cell connector (16);

A temperature sensor (32) mounted on the upper side of the circuit board edge section (31), wherein the upper side of the circuit board edge section (31) is located below the upper side of the circuit board (18) and below the upper side of the respective cell connector (16); and

And a cell connector overlapping section (33) of the corresponding cell connector (16), which overlaps the temperature sensor (32) on the circuit board edge section (31) on the upper side of the circuit board edge section.

2. The cell contact system according to claim 1, wherein the at least one temperature detection device (30) further has a heat conducting layer (34) between an upper side of the temperature sensor (32) and a cell connector overlap section (32) of the respective cell connector (16).

3. The cell contact system according to claim 2, wherein the thermally conductive layer (34) of the temperature detection device (30) is arranged on the temperature sensor (32) or on the cell connector overlap section (33) of the respective cell connector (16).

4. The cell contact system according to any of the preceding claims, wherein the cell connector overlap section (33) of the temperature detection device (30) overlaps the entire circuit board edge section (31) of the temperature detection device (30).

5. The cell contact system according to any of the preceding claims, wherein the cell connector overlap section (33) of the temperature detection device (30) extends higher than the remaining contact areas (16 a, 16 b) of the respective cell connector (16).

6. The cell contact system according to any of the preceding claims, wherein the circuit board edge section (31) of the temperature detection device (30) is located in the same plane as the circuit board (18) or below the circuit board (18).

7. The cell contact system according to any of the preceding claims, wherein the circuit board edge section (31) of the temperature detection device (30) is located in the same plane as the respective cell connector (16) or below the respective cell connector (16).

8. The cell contact system according to any of the preceding claims, wherein the circuit board edge section (31) of the temperature detection device (30) has the same layer thickness as the circuit board (18) or a layer thickness lower than the circuit board (18).

9. The cell contact system according to any one of the preceding claims, wherein the plurality of cell connectors (16) each have: two contact areas (16 a, 16 b) for the cell terminals (36) of a battery cell (12); and a compensation region (16 c) between the two contact regions (16 a, 16 b), wherein a temperature detection device (30) is arranged in the region of one of the two contact regions (16 a, 16 b) of the respective cell connector (16).

10. A battery module (10), comprising:

A plurality of battery cells (12); and

Cell contact system (15) according to any of the preceding claims.

11. A method of equipping a battery module (10) having a plurality of battery cells (12) with a cell activation system (15) having: a plurality of cell connectors (16) for conductively connecting cell terminals (36) of different battery cells (12); and a circuit board (18) having a plurality of signal lines for conducting measured values on one of the plurality of cell connectors (16) to a signal management circuit (20) or a connection interface (22), respectively, the cell activation system comprising at least one temperature detection device (30) for measuring the temperature of the battery cells (12) on one of the plurality of cell connectors (16), the method comprising:

At least one integrated circuit board edge section (31) is provided for the circuit board (18) such that it then protrudes from the circuit board into the region of the respective cell connector (16) in the installed state of the cell contact-through system (15),

Mounting a temperature sensor (32) on the upper side of the circuit board edge section (31), wherein the upper side of the circuit board edge section (31) is located lower than the upper side of the circuit board (18) and lower than the upper side of the corresponding cell connector (16), and

A cell connector overlap section (33) is provided for the respective cell connector (16) such that it then overlaps a temperature sensor (32) on a circuit board edge section (31) on the upper side of the circuit board edge section in the installed state of the cell contact-through system (15).

12. The method of claim 11, further comprising inserting a thermally conductive layer (34) between an upper side of the temperature sensor (32) and a cell connector overlap section (33) of the respective cell connector (16).

13. Method according to claim 11 or 12, wherein the components (31, 32, 33, 34) of the temperature detection device (30) are constructed and positioned as in any one of claims 3 to 9.

Claims (13)

1. A cell contact system (15) for a battery module (10) having a plurality of battery cells (12), comprising:

a plurality of cell connectors (16) for conductively connecting cell terminals (36) of different battery cells (12); and

A circuit board (18) having a plurality of signal lines for conducting measured values on one of the plurality of cell connectors (16) to a signal management circuit (20) or a connection interface (22),

Wherein the cell contact system (15) further comprises at least one temperature detection device (30) for measuring the temperature of the battery cell (12) at one of the plurality of cell connectors (16),

Wherein the at least one temperature detection device (30) is formed by:

A circuit board edge section (31) integrated with the circuit board (18), which projects from the circuit board into the region of the respective cell connector (16);

a temperature sensor (32) mounted on the circuit board edge section (31); and

A cell connector overlap section (33) of the corresponding cell connector (16) overlaps a temperature sensor (32) on the circuit board edge section (31).

2. The cell contact system according to claim 1, wherein the at least one temperature detection device (30) further has a thermally conductive layer (34) between a temperature sensor (32) and a cell connector overlap section (32) of a respective cell connector (16).

3. The cell contact system according to claim 2, wherein the thermally conductive layer (34) of the temperature detection device (30) is arranged on the temperature sensor (32) or on the cell connector overlap section (32) of the respective cell connector (16).

4. The cell contact system according to any of the preceding claims, wherein the cell connector overlap section (33) of the temperature detection device (30) overlaps the entire circuit board edge section (31) of the temperature detection device (30).

5. The cell contact system according to any of the preceding claims, wherein the cell connector overlap section (33) of the temperature detection device (30) extends higher than the remaining contact areas (16 a, 16 b) of the respective cell connector (16).

6. The cell contact system according to any of the preceding claims, wherein the circuit board edge section (31) of the temperature detection device (30) is located in the same plane as the circuit board (18) or below the circuit board (18).

7. The cell contact system according to any of the preceding claims, wherein the circuit board edge section (31) of the temperature detection device (30) is located in the same plane as the respective cell connector (16) or below the respective cell connector (16).

8. The cell contact system according to any of the preceding claims, wherein the circuit board edge section (31) of the temperature detection device (30) has the same layer thickness as the circuit board (18) or a layer thickness lower than the circuit board (18).

9. The cell contact system according to any one of the preceding claims, wherein the plurality of cell connectors (16) each have: two contact areas (16 a, 16 b) for the cell terminals (36) of a battery cell (12); and a compensation region (16 c) between the two contact regions (16 a, 16 b), wherein a temperature detection device (30) is arranged in the region of one of the two contact regions (16 a, 16 b) of the respective cell connector (16).

10. A battery module (10), comprising:

A plurality of battery cells (12); and

Cell contact system (15) according to any of the preceding claims.

11. A method of equipping a battery module (10) having a plurality of battery cells (12) with a cell activation system (15) having: a plurality of cell connectors (16) for conductively connecting cell terminals (36) of different battery cells (12); and a circuit board (18) having a plurality of signal lines for conducting measured values on one of the plurality of cell connectors (16) to a signal management circuit (20) or a connection interface (22), respectively, the cell activation system comprising at least one temperature detection device (30) for measuring the temperature of the battery cells (12) on one of the plurality of cell connectors (16), the method comprising:

At least one integrated circuit board edge section (31) is provided for the circuit board (18) such that it then protrudes from the circuit board into the region of the respective cell connector (16) in the installed state of the cell contact-through system (15),

Mounting a temperature sensor (32) on a circuit board edge section (31), and

A cell connector overlap section (33) is provided for the respective cell connector (16) such that it then overlaps a temperature sensor (32) on the circuit board edge section (31) in the installed state of the cell contact-through system (15).

12. The method of claim 11, further comprising inserting a thermally conductive layer (34) between the temperature sensor (32) and the cell connector overlap section (32) of the respective cell connector (16).

13. Method according to claim 11 or 12, wherein the components (31, 32, 33, 34) of the temperature detection device (30) are constructed and positioned as in any one of claims 3 to 9.