AT526882A1 - Battery cell testing device, battery cell testing system and method for testing battery cells - Google Patents

Abstract

The present invention relates to a battery cell testing device (10), comprising: a holding device (12) with a battery cell receiving device (13) for a battery cell to be tested, and a positioning device (16) for a conditioning plate (22); and a base device (14) with an electrical connection device (32) for connection to the battery cell to be tested, an electrical test system connection (52) electrically connected to the electrical connection device (32) for connection to a test system power source, a signal connection device (34) for connection to a signal line connected to a sensor, a test system signal connection (54) signal-technically connected to the signal connection device (34), a first heat transfer medium connection device (36a) for fluidically connecting the conditioning plate (22) to an external heat transfer medium source, and a first test system heat transfer medium connection (56) fluidically connected to the first heat transfer medium connection device (36a).

Description

Battery cell testing device, battery cell testing system and method for testing battery cells

The invention relates to a battery cell testing device, as well as a battery cell testing system for several such battery cell testing devices and a method for testing

Battery cells with such a battery cell test system.

Due to the increasing electrification of road traffic, the battery as an energy storage device in automotive technology is becoming an increasingly important component for maintaining mobility. The batteries used are usually made up of several pouch cells or prismatic cells that are connected in series. In order to be able to estimate durability, performance and, as a result, possible distances to be covered, the individual battery cells must be subjected to tests. These tests usually take place in climate chambers in which the ambient temperature can be set to different temperatures. In this case, both specified temperature profiles must be run and the resulting performance and/or capacity of the battery cell must be determined at different constant temperatures.

The climate chambers usually contain high-current connectors, sensors such as temperature sensors, and signal connectors for connecting the battery cell or the test unit, consisting of the battery cell and the pressure plates between which the battery cell is clamped, with the corresponding control and power supply, which is located outside the climate chamber. These connections often have to

are made individually by hand.

However, it has proven problematic that the growing number of battery cells to be tested means that the time required to carry out and prepare a single measurement and the associated costs are too high. Furthermore, the

Installation space requirement too large.

The task is therefore to provide a battery cell test unit and a battery cell test system with which measurements on battery cells can be carried out in a shorter time and with less set-up time. The installation space used should

significantly reduced and costs saved.

This object is achieved according to a first aspect of the invention by a battery cell testing device, comprising: a holding device with a battery cell receiving device for a battery cell to be tested, and a positioning device for a conditioning plate; and a base device with an electrical connection device for connection to the battery cell to be tested, an electrical test system connection electrically connected to the electrical connection device for connection to a test system power source, a signal connection device for connection to a signal line connected to a sensor, a test system signal connection signal-technically connected to the signal connection device, a first heat transfer medium connection device for fluidically connecting the conditioning plate to a heat transfer medium source, and a first test system heat transfer medium connection fluidly connected to the first heat transfer medium connection device.

In this context, a battery cell test device is understood to mean a device that is intended to be used in connection with carrying out a battery cell test run. A holding device is used to position the battery cell and a conditioning plate. As part of this, the battery cell receiving device is designed to receive a battery cell. A battery cell is understood to be the smallest unit in the battery system that is capable of either generating electrical energy from chemical reactions or using electrical energy to trigger chemical reactions. A positioning device for a conditioning plate is a device on which a conditioning plate can be arranged in at least one specific position. This can be, for example, a horizontal or a vertical position. A conditioning plate is intended to adjust the temperature of a battery cell that is in thermal contact with the conditioning plate. For this purpose, flow channels for a heat transfer medium are preferably arranged in the conditioning plate. A heat transfer medium is a fluid heat transport medium and, depending on the application and temperature range, can also be referred to as a heating medium, coolant or refrigerant. In addition, electrical conditioning with heating wires can also be provided. A base device is a device preferably arranged on a base of the battery cell test device, which serves to ensure the supply of electricity and heat transfer medium to the battery cell and the conditioning plate and to create a connection to the test system. The electrical connection device of the base device serves to connect the battery cell to be tested. An electrical test system connection is connected to the electrical connection device. The electrical test system connection is used to

intended to be connected to a test system power source. A test system

Power source is a power source of the test system. The base device further comprises a signal connection device which serves to connect a signal line connected to a sensor to the test system signal connection. The sensor and the signal line are thus arranged on the battery cell side. The sensor can preferably be part of the battery cell test device, but in principle also part of the replaceable battery cell. The test system signal connection which is connected to the signal connection device for signal purposes also belongs to the base device and is preferably arranged on a side of the base device facing away from the battery cell after the battery cell has been installed. A first heat transfer medium connection device is also part of the base device. On the battery cell side, this serves to fluidically connect the conditioning plate to a heat transfer medium source. A first test system heat transfer medium connection is preferably arranged on the side of the base device opposite the battery cell. The first test system heat transfer medium connection serves to connect the test system to the heat transfer medium source and is fluidically connected to the first heat transfer medium connection device. The test system heat transfer medium connection and the heat transfer medium connection device of the base device thus form two elements of a connection unit for supplying the heat transfer medium provided in the test system by a heat transfer medium source to the battery cell to be tested.

With such a battery cell test device, it is possible to completely dispense with the climate chambers that were previously necessary. Temperature conditioning of the battery cells is made possible solely by the conditioning plate. The temperature of the conditioning plate can be adjusted with high precision in a particularly quick and easy manner. This enables the battery cell test device to be changed more quickly and easily without complex manual assembly work.

According to a second aspect, the invention provides a battery cell test system for a plurality of battery cell test devices according to one of claims 1 to 10, characterized in that a plurality of battery cell test devices can be arranged in test slots arranged one above the other and/or next to one another in the battery cell test system, and the test slots each have: a power connection connected to a power source, which corresponds to an electrical test system connection of the battery cell test device, a signal connection, which corresponds to a test system signal connection of the battery cell test device, and a heat transfer medium connection, which is connected to a test system

Heat transfer medium connection of the battery cell test device corresponds.

The battery cell test device can be designed as a cabinet-shaped unit in which

For example, from one side the battery cell test devices in respective test slots

can be introduced. Each of the test slots has a connection to a power source, via which power can be supplied to the battery cell to be tested and/or with which power can be discharged from the battery cell to be tested. The power connections in the test slots correspond to an electrical test system connection of the battery cell test device. Likewise, the signal connection of the test system corresponds to a test system signal connection of the battery cell test device and the heat transfer medium connection of the test system corresponds to a test system heat transfer medium connection of the battery cell test device, and are therefore connecting parts to each other.

The battery cell test system enables multiple battery cells to be tested simultaneously under different conditions. In particular, different battery cells

be tested simultaneously under different temperature conditions.

According to a third aspect, the invention provides a method for testing battery cells,

comprising the steps of: a) providing a battery cell test system according to one of claims 11 to 13;

b) providing a battery cell testing device according to one of claims 1 to 10;

C) arranging a battery cell in the battery cell test device; d) arranging the battery cell test device in a first test slot;

e) Connecting the electrical test system connector, the test system signal connector and the test system heat transfer fluid connector to the

corresponding terminals of the battery cell test system; and f) performing a test run.

In the battery cell testing device according to the first aspect of the invention, it can preferably be provided that it has a positioning device arranged on the

Conditioning plate included.

The conditioning plate is used for the thermal conditioning of a battery cell to be tested. The controllability of the temperature of the conditioning plate can be increased by the fact that each conditioning plate has an inlet, an outlet and an inner channel through which a heat transfer medium flows from the inlet to the outlet as a conditioning medium. The temperature of the conditioning plate and thus of a battery cell to be tested that is in thermal contact with the conditioning plate can be changed very quickly via the heat transfer medium, since an optimally conditioned heat transfer medium can be continuously supplied while the

heated or cooled heat transfer medium is discharged. The inlet and the outlet are preferably formed on the narrow surfaces of the conditioning plate. When using a liquid heat transfer medium, the heat conduction is further improved by the existing heat capacity of the liquid compared to a gaseous heat transfer medium. The conditioning plate can be arranged in particular in a horizontal or vertical orientation on the positioning device. The positioning device can be designed in the form of a plate. Additional fastening means for fastening the conditioning plate can,

but do not have to be provided on the positioning device.

An even better heat transfer to the outer surface of the conditioning plates is achieved by forming webs in the inner channel of the conditioning plates. These webs can

in particular be designed as turbulator plates.

Further advantages are achieved if the battery cell testing device further comprises two pressure plates arranged on the positioning device with surfaces facing each other, wherein a battery cell receiving space is formed between the two pressure plates.

In this context, surfaces facing each other are understood to mean surfaces where the normal vectors from the surfaces point in opposite directions. Pressure plates are understood to be plates with which pressure can be exerted on a battery cell to be tested or on another object arranged in the battery cell receiving space. This can be done in particular by a screw connection between the plates that brings the plates together when actuated, but also by other mechanical or mechatronic measures. Pressure exerted on the battery cell by the pressure plate during testing simulates the conditions prevailing in later operation, when the battery cell is combined with other battery cells to form battery packs or battery modules.

It is particularly advantageous if one printing plate is designed as a conditioning plate or if both printing plates are designed as conditioning plates.

A pressure plate is a plate that is designed to exert pressure on a battery cell arranged in the battery cell receiving space. Such a pressure plate can be designed as a conditioning plate, for example, in that it has connections and the channels described above for a heat transfer medium and is made of a heat-conducting

material so that it can transfer heat to the battery cell being tested.

In a particularly advantageous embodiment of the invention, it can be provided that the conditioning plates can be conditioned at least in the temperature range from -30 °C to +60 °C, preferably at least in the temperature range from -40 °C to +80 °C.

The ability to be conditioned to a specific temperature means that a heat transfer medium transfers heat to the conditioning plate for a sufficiently long period of time so that the conditioning plate assumes the intended temperature. For this to happen, all components and connecting elements, such as existing seals, must be designed to withstand these temperatures. The temperature range of -30°C to +60°C enables testing over a wide temperature range. The preferably larger temperature range of -40 °C to +80 °C enables testing over temperatures that occur in the vehicle even under borderline conditions. Such conditionability means that it can be repeated over many test cycles, in particular more than 1000, preferably at least 10,000 test cycles, at different temperatures and can be reproduced.

Further advantages are achieved if the base device further comprises a second heat transfer medium connection device for the fluidic connection of a second conditioning plate and a second heat transfer medium connection device in

second test system heat transfer connection which is fluidically connected.

This particular embodiment of the invention makes it possible to connect two conditioning plates simultaneously and thus to condition the battery cell receiving space from two sides, thereby enabling a more homogeneous and faster conditioning of the battery cell

is made possible.

In particular, it can be provided that the first and/or the second heat transfer medium connection device comprises a flow and a return. In this context, the flow refers to a heat transfer medium connection that is designed to supply a heat transfer medium to the conditioning plate. In this context, the return refers to a heat transfer medium connection that is designed to supply the

To lead heat transfer medium away from the conditioning plate.

Further advantages are achieved if the electrical test system connection and/or the test system signal connection and/or the test system heat transfer medium connection are designed as connectors.

The connector is used to easily connect one or more of the connections of the battery cell test device with the corresponding connections of the battery cell test system. The connecting parts of a connector are aligned by the form-fitting of the plug parts and are fixed in place with a linear movement by spring force, i.e. a spring clamp connection, which can be released with a force fit. This type of

71732

Fixation contributes, among other things, to the easier automation of test procedures for testing

of battery cells using such a battery cell test device.

In a further special embodiment, it is provided that the battery cell test device is designed as a plug-in module for a battery cell test system. A plug-in module is designed to be pushed into a plug-in opening. A test slot of a battery cell test system can be provided as a plug-in opening, for example. In addition to the appropriate shape, contact rails and/or guide elements can be provided on the battery cell test device.

It is also advantageous if the battery cell test device further comprises a sensor device that is connected to the signal line in terms of signal technology. The sensor device can be a sensor or a sensor consisting of several sensors, possibly arranged in a distributed manner.

sensor device.

It is particularly advantageous if the sensor device comprises a temperature sensor and/or a voltage sensor. The temperature sensor can preferably be used to measure the temperature on the conditioning plate. A voltage sensor can

preferably be designed to measure a voltage of a battery cell.

In the battery cell test system according to the second aspect of the invention, it is particularly advantageous if a first conditioning plate of a first battery cell test device in a first test slot can be conditioned to a first temperature and a second conditioning plate of a second battery cell test device in a second test slot can be conditioned to a second temperature that differs from the first temperature.

It is further advantageous if the battery cell test system further comprises an automated conveyor device which is designed to transport a battery cell test device from a

first test slot and place it in a second test slot.

In the method for testing battery cells according to the third aspect of the invention, it is particularly advantageous if the method further comprises the step:

e1) Setting a first conditioning plate temperature.

The setting of the first conditioning plate temperature is provided between steps e) and f). The conditioning plate temperature preferably corresponds to a

Battery cell temperature and is achieved by supplying the heat transfer medium to the conditioning plate.

Further advantages are achieved if steps d) to f) are carried out automatically. The automated execution means that at least these steps do not have to be carried out manually by

humans, but by artificial systems.

In a further particular embodiment, it is preferably provided that the

The method further comprises the steps of: g) removing the battery cell test device from the first test slot;

h) placing the battery cell test device in a second test slot that is different from the first test slot from which the battery cell test device was taken;

i) setting a second conditioning plate temperature different from the first conditioning plate temperature; and

]}) Perform a second test run.

In the latter embodiment, it is particularly advantageous if steps d) to j) are carried out automatically.

In further particular embodiments of the invention, the term “comprising” may also mean “containing”.

This creates a battery cell test device, a battery cell test system and a method for testing battery cells, with which the battery cells can be conditioned for testing in a very small space and, compared to known battery cell test devices in climate chambers, particularly quickly. Temperature profiles can be run completely automatically with little control effort. The set-up time and test time can be reduced compared to known designs.

can be significantly reduced. Accordingly, the efficiency of the system is significantly increased.

Further advantages, features and details of the invention emerge from the following description, in which embodiments of the invention are described in detail with reference to the drawings. They show schematically:

Fig. 1 is a perspective view of a battery cell testing device according to a particular embodiment of the invention,

Fig. 2 is a perspective view of a battery cell testing device according to another particular embodiment of the invention,

Fig. 3 is a front view of the base device of the battery cell testing device from Fig. 1, Fig. 4 is a rear view of the base device from Fig. 3,

Fig. 5a-e a front view of a base device according to Figure 3 with various possible arrangements of a battery cell to a conditioning plate and pressure plates to this,

Fig. 6 is a perspective view of a battery cell test system according to a

particular embodiment of the invention.

Figure 1 shows a perspective view of a battery cell test device 10 according to a particular embodiment of the invention. The battery cell test device 10 is designed as a plug-in module for a battery cell test system 62 and comprises a holding device 12 and a base device 14. The holding device 12 comprises a battery cell receiving device 13 for receiving a battery cell to be tested and a

first positioning device 16a for positioning a conditioning plate 22a.

The first positioning device 16a consists of a lower support element 17 and an upper clamp element 20, with which the unit to be tested, consisting in this case of a lower conditioning plate 22a, an upper conditioning plate 22b and an intermediate

Battery cell (not shown in this illustration) is held in position.

A second positioning device 16b is arranged mirror-symmetrically with respect to the first positioning device 16a and ensures additional stability of the conditioning plates 22a, 22b. In this embodiment, the battery cell receiving device 13 consists of the lower conditioning plate 22a and the upper conditioning plate 22b and a receiving frame 24 arranged between them, which in turn encloses a battery cell receiving space 26. The conditioning plates 22a, 22b can clamp battery cells (not shown) arranged in the battery cell receiving space 26. The pressure exerted on the battery cell in this way can be adjusted via the clamping screws 30 fixing the conditioning plates 22a, 22b. The conditioning plates 22a, 22b thus have a pressure-exerting effect in addition to acting as a thermal conditioning element and thus also serve as pressure plates.

Such a complex mounting of the battery cell and the conditioning plate 22a has, among other things, stability advantages over other embodiments, but for example a conditioning plate 22a arranged horizontally on the positioning device 16 can also serve alone as the battery cell receiving device 13.

The base device 14 is arranged essentially vertically on a base of the battery cell test device 10. The base device 14 comprises several connections. In the perspective shown in Fig. 1, some of the battery cell-side connections 18 can be seen in particular, with the test system-side connections 19 opposite them only being visible to a limited extent. The terms battery cell-side connections and test system-side connections are chosen with reference to a preferred application discussed in the figures, in which a battery cell is received by the battery cell receiving device during operation, and should not be understood in a restrictive manner. A detailed description of the connections 18, 19 on both sides follows in connection with the explanations for Figures 3 and 4. The battery cell-side connections 18 of the base device 14 comprise an electrical connection device 32 consisting of two connections for connection to the battery cell to be tested, a signal connection device 34 for connection to a signal line connected to a sensor, and a first heat transfer medium connection device 36a and a second heat transfer medium connection device 36b for the fluidic connection of the conditioning plate 22a, 22b to test system heat transfer medium connections connected to an external heat transfer medium source (not shown). One of the heat transfer medium connection devices 36a, 36b can be connected to the conditioning plate 22b via the conditioning plate connections 38. For reasons of clarity, the connection lines provided for this purpose are not shown here.

The electrical connection devices 32 are connected to battery cell connections 42 via ribbon cables 40. To cool the electrical battery cell connections 42 during a test run, an axial fan 44 is arranged above them, with which an air flow can be generated over the battery cell connections 42.

which represents a cost-effective alternative to conventional compressed air cooling systems.

Figure 2 shows a perspective view of a battery cell testing device 10 according to another particular embodiment of the invention. In contrast to the battery cell testing device 10 shown in Figure 1, the holding device 12 is arranged here for vertical reception of the battery cell.

In particular, holding elements 46 are arranged on a base plate of the battery cell test device 10 and can be moved via elongated holes 48. The holding elements 46 hold the conditioning plates 22 in a vertical position in such a way that a battery cell receiving space 26 is formed between them. The holding elements 46 and two holding columns 50 are parts of the positioning device 16 with which the conditioning plates 22 can be positioned. Positioning takes place via a clamping lever 52 which engages in a curved elongated hole 54. On an upper side of the holding columns 50, the length of which can be adjusted using a telescopic system, a cross member 56 serves to fix the holding device 12 as well as the battery cell connections 42 and the axial fans 44 at the top. The heat transfer medium connection devices 36a, 36b are in fluid communication with the conditioning plate connections 38 via supply lines 58 and return lines 60. Others with the same reference numerals as in Figure 1

The elements designated correspond to these and/or have a corresponding function.

Figure 3 shows a front view of a base device 14 with a view of a battery cell-side plate element 27 with the battery cell-side connections 18. This includes an electrical connection device 32 consisting of two connections, which is intended to supply a battery cell to be tested with power. When the battery cell is mounted on the battery cell test device 10, cables, for example the ribbon cables 40 shown in Figures 1 and 2, are connected to the electrical connection device 22 and the battery cell connections 42.

The signal connection device 34 is designed as a multi-pin plug. It is used to connect a signal line connected to one or more sensors. The sensor or sensors form a sensor device with which the temperature, the current flowing through the battery cell, a voltage applied to the battery cell, a pressure acting between pressure plates and/or conditioning plates on the battery cell to be measured or other parameters relevant to testing the battery cell can be measured. Alternatively or additionally, one or more of the sensors can also be connected to the electrical connection devices 32. In particular, it can be provided to connect sensors for measuring the current flowing through the battery cell to be tested and/or the voltage flowing through the battery cell to the electrical connection devices 32.

Furthermore, the base device 14 has on its front a first heat transfer medium connection device 36a and a second heat transfer medium connection device 36b for flow

technical connection of the conditioning plate to an external heat transfer medium source. The first heat transfer medium connection device 36a forms a return line for a heat transfer medium, i.e. a heating medium, coolant or refrigerant. The second heat transfer medium connection device 36b forms a flow line for the heat transfer medium to supply the conditioning plate 22. Each of the two heat transfer medium connection devices has two connections to supply two conditioning plates 22 with the heat transfer medium. A mixture of water with antifreeze, for example, is suitable as a heat transfer medium for use in a wide temperature range.

The battery cell-side plate element 27 also has two connecting holes 31, via which screw connectors (not shown in detail) can be connected to counter bores 48 of a

Figure 4 shows the plate element 50 of the base device 14 on the test system side.

The rear view of the base device 14 shown in Figure 4 has an electrical test system connection 52 which is designed to be connected to a test system power source, i.e. a power source of a test system 62. The electrical test system connection is electrically connected to the opposite electrical connection device 32. A test system signal connection 54 is provided to forward sensor signals to the test system 62. For this purpose, the test system signal connection 54 is in signal connection with the opposite signal connection device 34.

Furthermore, the base device 14 has a test system heat transfer connection 56 on the test system side, which is in fluid communication with the battery cell-side heat transfer connection device 36. In contrast to the four connections of the battery cell-side heat transfer connection device 36, the test system heat transfer connection 56 consists of only two connections, which are formed into a flow and a return and are connected to their respective counterparts of the

battery cell-side heat transfer medium connection device 36 into two channels each.

Figure 5 shows a schematic plan view of possible arrangements of a battery cell 58 relative to a conditioning plate 22 and the base device 14 and optionally a second conditioning plate 22 and/or one or two pressure plates 60.

In Figure 5a, a conditioning plate 22 is arranged horizontally and a battery cell 58 is arranged vertically, which enables a possible simple mounting arrangement with, however, relatively low heat transfer from the one conditioning plate 22 to the battery cell.

Figure 5b shows an arrangement in which the conditioning plate 22 and the battery cell 58 are both arranged in a horizontal orientation, which already has a somewhat higher

Heat transfer is possible.

The arrangement shown in Figure 5c is based on the arrangement of conditioning plate 22 and battery cell 58 shown in Figure 5a, wherein two vertically aligned pressure plates 60 are additionally arranged on the battery cell 58, thereby making it possible to exert pressure on the battery cell 58 in addition to the thermal conditioning.

The arrangement shown in Figure 5d is based on the arrangement shown in Figure 5c, wherein the pressure plates 60 are designed as conditioning plates 22, thus making it possible to exert a more efficient thermal conditioning of the battery cell 58 and pressure with only two conditioning plates. An additional, horizontal conditioning plate 22 has been omitted, since this only brings relatively little added value.

The arrangement shown in Figure 5e is based on that shown in Figure 5d, with one of the conditioning plates being designed as a comparatively less complex pressure plate 60. This arrangement also enables thermal conditioning and the application of pressure to the battery cell 58, while using overall cheaper components.

Fig. 6 shows a perspective view of a battery cell test system 62 according to a particular embodiment of the invention. The battery cell test system 62 is designed to accommodate a plurality of battery cell test devices 10 of the type described above and to carry out test runs for testing the battery cells arranged in the battery cell test devices 10.

For this purpose, a test system cabinet unit 63 is provided with several test slots 64 arranged one above the other and next to one another, which in the illustration shown are arranged behind a vertically displaceable push plate 66, with which the battery cell test devices 10 are protected from external influences, in particular thermal influences, during a test run.

be protected.

The test slots 64 each have a power source (not shown in detail) on their rear side, the connection of which corresponds to the electrical test system connection 52 of the battery cell test device 10. They also have a signal connection (also not shown in detail), which corresponds to a test system signal connection 54 of the battery cell test device 10, and a heat transfer medium source (also not shown in detail), the connection of which corresponds to a test system heat transfer medium connection 56, which

Battery cell test device 10 corresponds. The corresponding connections of the test slots 64 are designed as plug connectors like the connections of the test device 10, but with opposite genders. This makes it possible that, by inserting the test device 10 into a test slot 64 of the test system 62, the connection of the power source is connected to the electrical test system connection 52, the signal connection is connected to the test system signal connection 54 and the connection of the heat transfer medium source is connected to the test system heat transfer medium connection 56. Guide rails (not shown in detail) are arranged in the test slots for the necessary alignment of the battery cell test device 10 to the test slot 64. For conditioning the conditioning plates 22, a heat transfer medium temperature control device 68 is provided in the battery cell test system 62, which serves as a heat transfer medium source for heat transfer mediums of different temperatures. The heat transfer medium temperature control device 68 is connected to the test slots 64 in such a way that a conditioning plate 22 of a battery cell test device 10 can be conditioned to a first temperature in a first test slot 64a, to a second temperature in a second test slot 64b and to a third temperature in a third test slot 64c. The first, second and third temperatures differ from one another. In total, heat transfer mediums can be conditioned to preferably at least 8, particularly preferably at least 15 different temperatures. By changing the test slots without having to remove the battery cell from the battery cell test device 10, a quick and simple conditioning of the battery cell to be tested is possible. Any further thermal conditioning of the test slots 64 themselves, for example by means of

Heating or cooling elements are not necessary and not provided.

The battery cell test system 62 further comprises an automated conveyor device 70, which is designed to remove a battery cell test device 10 from a first test slot 64a and to arrange it in a second test slot 64b. For this purpose, the automated conveyor device 70 has a positioning module 72 with an outer frame 74 and an inner frame 76 that can be moved vertically in the outer frame 74, as well as a positioning unit 78 with which an insertion device 80, which is designed to insert a battery cell test device 10 designed as a slide-in module into one of the test slots 64, can be moved horizontally. The automated conveyor device 70 itself can also be moved via a transport module 82 on which the outer frame 74 is arranged, so that the automated conveyor device 70 can also be used to change battery cell test devices 10 between different battery cell test systems 62.

For positioning the insertion device 80 on the respective

The automated conveyor device 70 is equipped with suitable sensors and control electronics in the test slot 64 provided.

The above explanations of the embodiments describe the present invention exclusively by way of examples.

List of reference symbols 10 Battery cell test device 12 Holding device 13 Battery cell receiving device 14 Base device 16 Positioning device 17 Support element 18 Battery cell side connections 19 Test system side connections 20 Clamp element 22 Conditioning plate 24 Receptacle frame 26 Battery cell receiving space 27 Battery cell side plate element 28 Forward flow 29 Return flow 30 Clamping screw 31 Connection holes 32 Electrical connection device 34 Signal connection device 36a First heat transfer medium connection device 36b Second heat transfer medium connection device 38 Conditioning plate connection 40 Ribbon cable 42 Battery cell connection 44 Axial fan 46 Holding elements

48 counter bores 50 test system side plate element 52 electrical test system connection 54 test system signal connection 56 test system heat transfer fluid connection 58 battery cell 60 pressure plate 62 battery cell test system 64 test slot 66 push plate 68 heat transfer fluid temperature control device 70 automated conveyor device 72 positioning module 74 outer frame 76 inner frame 78 positioning unit 80 insertion device 82 transport module

Claims (18)

Patent claims 1 to 18 1. Battery cell testing device (10), comprising: a holding device (12) with a battery cell receiving device (13) for a battery cell to be tested, and a positioning device (16) for a conditioning plate (22); and a base device (14) with an electrical connection device (32) for connection to the battery cell, an electrical test system connection (52) electrically connected to the electrical connection device (32) for connection to a test system power source, a signal connection device (34) for connection to a signal line connected to a sensor, a test system signal connection (54) connected to the signal connection device (34) for signaling purposes, a first heat transfer medium connection device (36a) for the fluidic connection of the conditioning plate (22) to an external heat transfer medium source, and a first test system heat transfer connection (56) in fluid communication with the first heat transfer connection device (36a). 2. Battery cell testing device (10) according to claim 1, further comprising: a conditioning plate (22) arranged on the positioning device (16). 3. Battery cell testing device (10) according to one of claims 1 and 2, further comprising: two pressure plates (60) arranged on the positioning device (16) with surfaces facing each other, wherein between the two pressure plates (60) a Battery cell receiving space (26) is formed. 4. Battery cell testing device (10) according to claim 3, characterized in that one pressure plate (60) is designed as a conditioning plate (22) or both pressure plates (60) are designed as conditioning plates (22). 5. Battery cell test device (10) according to one of the preceding claims, characterized in that the conditioning plates (22) are at least in the temperature range from -20°C to +40°C, preferably at least in the temperature range from -30°C to +60°C are conditionable. 6. Battery cell testing device (10) according to one of the preceding claims, characterized in that the base device (14) further comprises: a second heat transfer medium connection device (36b) for the fluidic connection of a second conditioning plate (22) and a second test system heat transfer medium connection (56) in fluid communication with the second heat transfer medium connection device (36b). 7. Battery cell testing device (10) according to one of the preceding claims, characterized in that the electrical test system connection (52) and/or the test system signal connection (54) and/or the test system heat transfer medium connection (56) is designed as a plug connector. 8. Battery cell testing device (10) according to one of the preceding claims, characterized in that the battery cell test device (10) is designed as a plug-in module for a battery cell test system (62). 9. Battery cell testing device (10) according to one of the preceding claims, further comprising a signal-technically connected to the signal line Sensor device. 10. Battery cell testing device (10) according to claim 9, characterized in that the Sensor device comprises a temperature sensor and/or a voltage sensor. 11. Battery cell test system (62) for a plurality of battery cell test devices (10) according to one of claims 1 to 10, characterized in that several battery cell test devices (10) can be arranged in test slots (64) arranged one above the other and/or next to one another in the battery cell test system (62), and the test slots (64) each have: a power connector connected to a power source that is connected to an electrical Test system connection (52) of the battery cell test device (10) corresponds, a signal terminal corresponding to a test system signal terminal (54) of the battery cell test device (10), and a heat transfer medium connection corresponding to a test system heat transfer medium connection of the battery cell test device (10). 12. Battery cell test system (62) according to claim 11, characterized in that a first conditioning plate (22) of a first battery cell test device (10) in a first test slot (64a) can be conditioned to a first temperature and a second conditioning plate (22) of a second battery cell test device (10) in a second test slot (64b) can be conditioned to a second temperature which is different from the first temperature. 13. Battery cell test system (62) according to one of claims 11 and 12, further comprising an automated conveyor device (70) which is configured to remove a battery cell test device (10) from a first test slot (64a) and to arrange it in a second test slot (64b). 14. A method for testing battery cells, comprising the steps: a) providing a battery cell test system (62) according to one of claims 11 to 13; b) providing a battery cell testing device (10) according to one of claims 1 to 10; c) _arranging a battery cell in the battery cell testing device (10); d) _arranging the battery cell testing device (10) in a first test slot (64a); e) connecting the electrical test system connection (52), the test system signal connection (54) and the test system heat transfer medium connection (54) to the corresponding connections of the battery cell test system (62); and f) Conducting a test run. 15. A method for testing battery cells according to claim 14, further comprising the step: e1) Setting a first conditioning plate temperature. 16. A method for testing battery cells according to claim 15, further comprising the steps of: g) removing the battery cell testing device (10) from the first test slot (64a); h) arranging the battery cell test device (10) in a second test slot (64b) which is different from the first test slot (64a) from which the battery cell test device (10) was taken; i) Setting a second conditioning plate temperature which differs from the first conditioning plate temperature; and ]}) Perform a second test run. 17. A method for testing battery cells according to any one of claims 14 to 16, characterized in that steps d) to f) are carried out automatically. 18. A method for testing battery cells according to claim 16, characterized in that steps d) to j) are carried out automatically.