DE102014019074A1 - Cell block for a motor vehicle battery - Google Patents

Abstract

According to the invention, a cell block (11) for a motor vehicle battery (30) is proposed, having a plurality of battery cells (10) connected in series and / or in parallel, each having a cell housing (12) and at least one electrical contact element (13, 14). for electrical connection, and with at least one for cooling and / or heating of the battery cells (10) provided tempering device (33) having at least one cooling and / or heating plate (34, 34 '), the at least one contact element (13 , 14) at least one of the battery cells (10) and the cell housing (12) of at least one of the battery cells (10) thermally contacted. Furthermore, a cell holder (25) for such a cell block (11) and a motor vehicle high-voltage battery with at least one such cell block (11) are proposed.

Description

The invention relates to a cell block for a motor vehicle battery, a cell holder for such a cell block and a motor vehicle high-voltage battery having at least one such cell block.

From the DE 10 2008 034 867 A1 is already a cell block for a motor vehicle battery, with a plurality of in series and / or parallel interconnected battery cells, each having a cell housing and each electrical contact elements for electrical connection, and with a provided for cooling the battery cells tempering device having a cooling plate, which thermally contacted the contact elements of the battery cells, known.

The invention is in particular the object of providing a cost motor vehicle battery with improved temperature control of the battery cells. This object is achieved by an inventive design of a cell block according to claim 1, a cell holder according to the invention according to claim 9 and an inventive embodiment of a motor vehicle high-voltage battery according to claim 10. Further developments of the invention will become apparent from the dependent claims.

According to the invention, a cell block is proposed for a motor vehicle battery having a plurality of battery cells connected in series and / or in parallel, each having a cell housing and at least one electrical contact element for electrical connection, and having at least one for cooling and / or heating the battery cells provided tempering device having at least one cooling and / or heating plate, which thermally contacts the at least one contact element of at least one of the battery cells and the cell housing of at least one of the battery cells. As a result, the battery cells can be tempered in a space-saving manner via their electrical contact elements and via their cell housing, whereby a particularly uniform, powerful and compact temperature control of the battery cells can be implemented cost-effectively. Due to the temperature of the contact elements and the cell case, a particularly low temperature gradient can be realized in the battery cells and a particularly high power loss can be dissipated by cooling, whereby a lifetime of the battery cells and thus the cell block can be increased cost. By cooling the electrical contact elements in particular overheating of the electrical contact elements can be avoided by ohmic losses. The inventive design of the cell block, a cost-effective and compact cell block can be provided with improved temperature control of the battery cells. By using the cell block according to the invention for producing a motor vehicle battery, a cost-effective and compact motor vehicle battery with improved temperature control of the battery cells can be provided. A "cell housing" is to be understood in particular as meaning a housing of a battery cell, within which an electrochemically active part of the battery cell is arranged and / or enclosed and / or received. An "electrical contact element" is to be understood in particular as an element forming a cell pole of the battery cell or as being electrically connected to a cell pole of the battery cell. A "thermal contact" is to be understood in particular as meaning a heat-conducting contact, through which a heat flow preferably takes place at least essentially by heat conduction. Two thermally contacting elements preferably contact each other either directly or via at least one heat-conducting element. A "heat-conducting element" should in particular be understood to mean an element that has a thermal conductivity λ at a temperature of 0 ° C. of at least 50 W / mK, advantageously of at least 100 W / mK, particularly advantageously of at least 200 W / mK and very particularly advantageous of at least 350 W / mK. By "provided" is to be understood in particular to be specially designed, designed, equipped and / or arranged.

It is further proposed that the cell block comprises at least one intended for fixing at least one of the battery cell cell holder, which has at least one heat conducting element which thermally interconnects the cell housing of the at least one battery cell and the at least one cooling and / or heating plate, whereby the temperature of the Cell enclosures and thus the cell block can be made very compact. Furthermore, the cell housing of at least one of the battery cells and the at least one contact element of this at least one battery cell can be particularly easily thermally connected to the same cooling and / or heating plate. A "cell holder" should in particular be understood to mean a holder which accommodates and / or contacts at least one battery cell, wherein the holder is preferably provided for fixing the battery cells and / or at least electrically isolating them from one another. Preferably, the cell holder is designed in frame or shell shape. The cell holder is at least partially made of plastic. The cell holders are preferably provided to electrically insulate the battery cells from each other and from the battery housing of the motor vehicle battery.

It is also proposed that the heat-conducting element has at least one housing contact surface for the thermal contacting of the cell housing and at least one cooling and / or Heizplattenkontaktfläche for thermal contacting of the at least one cooling and / or heating plate, wherein the at least one housing contact surface and the at least one cooling and / or Heizplattenkontaktfläche are oriented at an angle to each other. As a result, the cell housing of at least one of the battery cells can be thermally connected in a particularly simple and compact manner to the cooling and / or heating plate which thermally contacts the at least one contact element. By "angled surfaces to each other" should be understood in particular surfaces that are each arranged in a plane or each defining a plane, the planes having a common cutting line. The angled surfaces are in particular not oriented parallel to each other. Preferably, the at least one housing contact surface and the at least one cooling and / or Heizplattenkontaktfläche at least substantially perpendicular to each other. By "at least substantially perpendicular" should be understood in particular a deviation from a vertical orientation, which is a maximum of 20 degrees, preferably at most 10 degrees and most preferably at most 5 degrees. The planes in which the at least one housing contact surface and the at least one cooling and / or Heizplattenkontaktfläche are arranged or which are defined by the at least one housing contact surface and the at least one cooling and / or Heizplattenkontaktfläche preferably include a right angle.

In particular, it is advantageous if the heat conducting element has at least one connecting web which connects the at least one housing contact surface and the at least one cooling and / or Heizplattenkontaktfläche each other, whereby the at least one electrical contact element and the heat conducting element can be particularly easily electrically isolated from each other. The at least one connecting web is preferably provided to arrange the at least one housing contact surface and the at least one cooling and / or Heizplattenkontaktfläche spaced from each other and / or angularly aligned with each other.

Further, it is advantageous if the heat-conducting element has at least one further cooling and / or Heizplattenkontaktfläche for thermally contacting the at least one cooling and / or heating plate, wherein the at least one electrical contact element at least one of the battery cells between the two cooling and / or Heizplattenkontaktflächen is arranged. As a result, a temperature control between the cooling and / or heating plate and the cell housing can be increased without binding the electrically conductive at least one electrical contact element to the heat conducting element.

Furthermore, it is advantageous if the at least two cooling and / or Heizplattenkontaktflächen are arranged in a plane, whereby a flat cooling and / or heating plate for controlling the temperature of the at least one contact element and the cell housing of at least one of the battery cells can be used.

In an advantageous embodiment, the cell holder has at least one plastic part, which is poured or sprayed onto the at least one heat-conducting element, whereby the cell holder and thus the cell block can be made lightweight. The plastic part surrounds the at least one heat-conducting element only partially so that the at least one housing contact surface and the at least one cooling and / or hotplate contact surface are exposed and thus thermally contactable. Preferably, the plastic part is formed as a plastic frame. By forming the plastic part as a plastic frame, the heat-conducting element can thermally contact the cell housing of two adjacent battery cells, as a result of which a number of components can be kept small. In principle, it is conceivable that the plastic part is designed as a plastic shell.

Further, it is advantageous if the heat conducting element is plate-shaped, whereby the at least one housing contact surface and the at least one cooling ← and / or Heizplattenkontaktfläche can be made particularly large. A "plate-shaped heat-conducting element" should in particular be understood as meaning a heat-conducting element which has two main extensions which are substantially larger than its thickness. In this context, "essential" should be understood in particular to mean that a main extension is at least 10 times, advantageously at least 20 times and particularly advantageously at least 30 times greater than the thickness. A "main extension" is to be understood in particular a length and / or a width or a height and in particular no circumferential extension.

Further, a cell holder for a cell block of a motor vehicle battery, in particular for a cell block according to the invention, proposed, with at least one heat-conducting, which is intended to thermally connect a cell housing at least one battery cell and at least one cooling and / or heating plate. As a result, a cell block with improved temperature control of the battery cells can be realized in a particularly cost-effective, compact and simple manner. Preferably, the cell holder has a plastic part designed as a plastic frame or plastic shell, which is poured or sprayed onto the at least one heat-conducting element.

Further, a motor vehicle high-voltage battery, with at least one cell block according to the invention proposed, whereby an improved in terms of its temperature motor vehicle high-voltage battery, can be provided. The automotive high-voltage battery is preferably for vehicle applications, such as for a hybrid, plug-in or electric vehicle provided. In principle, the motor vehicle high-voltage battery can be converted for stationary applications and serve, for example, as an electricity supplier or power storage.

Further advantages will become apparent from the following description of the figures. In the figures, an embodiment of the invention is shown. The figures, the description of the figures and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Showing:

1 1 schematically shows a motor vehicle drive train with a motor vehicle battery having a plurality of cell blocks;

2 one of the cell blocks with battery cells, cell holders and a tempering device shown in an exploded view,

3 the cell block with the battery cells and each having a heat conducting element cell holders in an exploded view,

4 a longitudinal section of the cell block along a stacking direction of the battery cells, wherein the longitudinal section through electrical contact elements of the battery cells,

5 a longitudinal section of the cell block along the stacking direction of the battery cells, wherein the longitudinal section through cooling plate contact surfaces of the heat conducting elements,

6 a cross section of the cell block perpendicular to the stacking direction of the battery cells by a heat conducting element of the cell holder and

7 one of the heat-conducting elements shown in perspective.

1 schematically shows a motor vehicle drive train with a motor vehicle battery 30 , The motor vehicle battery 30 includes multiple cell blocks, with only the cell block 11 is provided with a reference numeral. The cell blocks are electrically connected in parallel and / or in series to provide a voltage and capacitance required for the automotive powertrain. The cell block 11 is at least partially in the 1 to 7 shown. The cell blocks are analogous to each other, so only the cell block 11 will be described in more detail.

The cell block 11 includes a plurality of battery cells 10 , which are arranged in parallel one behind the other. The battery cells 10 are connected in series and / or in parallel with one another in order to provide a voltage and capacity required for the motor vehicle drive train can. The battery cells 10 each have a cell voltage in the low voltage range, which depends on a cell chemistry used. In an embodiment of the battery cells 10 as lithium-ion batteries, the cell voltage is 3.6 volts, for example. In principle, however, the cell voltage can also have other values. The motor vehicle battery 30 indicates depending on the interconnection of the battery cells 10 and / or the cell blocks to an operating voltage, which may be in the low-voltage range or in the high-voltage range depending on a intended use. Is the motor vehicle battery 30 designed as a starter battery, the operating voltage may for example be 12 volts. In particular, for use in a hybrid powertrain or electric powertrain, the motor vehicle battery 30 be provided for an operating voltage of 120 volts or more.

In this embodiment, the motor vehicle drive train is designed as a hybrid drive train. The motor vehicle drive train has an internal combustion engine 42 and an electric motor 43 on, which are intended to jointly and / or individually drive wheels 44 of the motor vehicle drive train. The motor vehicle battery 30 is to power the electric motor 43 intended. The motor vehicle battery 30 is rechargeable. For charging the motor vehicle battery 30 is the electric motor 43 can be operated as a generator. The motor vehicle battery 30 is designed as a motor vehicle high-voltage battery.

For fixing and electrical insulation of the battery cells 10 indicates the cell block 11 a plurality of cell holders arranged one behind the other 25 on top of the battery cells 10 take up. The cell holders 25 are each between two battery cells 10 arranged and / or enclose a border 45 , in particular a sealing seam 45 , at least one of the battery cells 10 , The cell holders 25 are partially made of plastic. The cell holders 25 are each formed frame-shaped. The cell holders 25 each have a plastic part 15 on. The plastic part 15 is designed as a plastic frame. Basically, the cell holders 25 also be cup-shaped, whereby the plastic part 15 is designed as a plastic shell. It is further In principle conceivable that the cell holder 25 are formed of a different material, such as of an electrically conductive material. In the 2 to 5 For clarity, only the cell holder 25 provided with a reference numeral.

For fixation are the cell holders 25 and the battery cells 10 pressed against each other and / or braced. For pressing and / or clamping, the cell block 11 continuous, not shown clamping elements. The clamping elements are designed as Zugankerschrauben, threaded rods, straps or the like. To initiate a clamping and / or pressing force are the two end arranged cell holder as pressure goggles 23 . 24 educated. The cell holders 25 , in particular the plastic part 15 , fix the battery cells 10 non-positively by pressure on the peripheral edge 45 , in particular on the sealing seam edge 45 , the battery cells 10 and / or on a surface of the battery cells 10 ,

The motor vehicle battery 30 has a battery case 31 on, that's the cell blocks 11 with the battery cells 10 receives. Next comprises the motor vehicle battery 30 an electronics 32 , in particular for monitoring the battery cells 10 as well as for adjusting an electrical power to the battery cells 10 fed or the battery cells 10 is taken is provided. In addition, the motor vehicle battery includes 30 a tempering device 33 for the battery cells 10 and / or the electronics 32 which in particular for cooling and / or heating of the battery cells 10 is provided. The cell blocks 11 with the battery cells 10 , the Electronic 32 and the tempering device 33 are in the common battery case 31 arranged.

All battery cells 10 are designed analogously. In the following description and the drawings between the individual battery cells 10 To be able to distinguish, are the reference numerals of the individual battery cells 10 supplemented by a numbering marked with a dot, which merely distinguishes the battery cells 10 in the description and the drawings. Components of the individual battery cells 10 provided a distinction between the components of each battery cell 10 is helpful, provided with the same numbering. Reference numerals without numbering always refer to all components which have the same reference number. A subsequent description of the individual battery cell 10 for example, all battery cells 10.1 . 10.2 transferable.

For storage of electrical energy, the battery cell 10 an electrochemically active part having an electrode package 18 and an electrolyte. Furthermore, the battery cell 10 a cell case 12 on, which receives the electrochemically active part. The electrochemically active part is inside the cell housing 12 arranged. The cell case 12 closes the electrochemically active part of the battery cell 10 one. The cell case 12 can be electrically insulating or electrically conductive. The cell case 12 is formed as a composite foil. It is designed as a pouch film. The electrochemically active part is in the cell housing 12 shrink wrapped. The battery cell 10 is designed as a pouch cell. Basically, the battery cell 10 but also be designed as another cell type, such as a bipolar frame flat cell. The electrode package 18 comprises at least one electrode stack and / or at least one electrode coil of electrolyte-impregnated layers of anodes and cathodes, which are each separated from Separatorem.

The electrolyte typically consists of organic solvents, such as, for example, dimethyl carbonate, ethylene carbonate, propylene carbonate or diethyl carbonate, or mixtures thereof and a conductive salt, such as LiPF _6, dissolved therein. The electrolyte may additionally have additives. The electrode package 18 has alternately arranged layers of cathode foils, separator foils and anode foils. The cathode foils and the anode foils are each separated by one of the separator foils. In lithium-ion cell chemistry, the cathode foils and the anode foils may be, for example, coated aluminum and copper foils. In principle, however, another cell chemistry is also conceivable.

For the electrode package 18 Different configurations are possible. The layers of cathode foil, anode foil and separator foil may for example be stacked. Alternatively, it is conceivable to wrap or flatten tapes of a plurality of plies. Further, it is conceivable to fold a band-shaped separator film in Z-shape and to insert the cathode foil and anode foils in the form of sheets laterally into pockets forming thereby.

For electrical connection, the battery cell 10 two electrical contact elements 13 . 14 on. The contact elements 13 . 14 protrude on two opposite sides of the cell housing 12 out. The contact elements 13 . 14 form poles of the battery cell 10 and are provided for the introduction and / or removal of electrical power. The contact elements 13 . 14 are outside the cell case 12 angled. The electrical contact elements 13 . 14 at least two adjacent battery cells 10.1 . 10.2 are bent over each other overlapping each other. The electrical contact elements 13 . 14 at least two adjacent battery cells 10.1 . 10.2 are in their overlap region electrically connected to each other. They are connected in their overlapping area cohesively. The electrical contact elements 13 . 14 are welded together, preferably by laser welding, resistance pressure welding, ultrasonic welding and / or the like. The contact elements 13 . 14 are designed as contact lugs. They are made of a sheet metal. In principle, the two electrical contact elements 13 . 14 together on one side of the cell housing 12 protrude. Furthermore, it is basically conceivable that the electrical contact elements 13 . 14 alternatively or additionally positively connected with each other, preferably by clinching, crimping, riveting and / or the same. Furthermore, it is conceivable that the electrical contact elements 13 . 14 alternatively or additionally connect by screws, clamps and / or the same with each other.

The tempering device 33 is for cooling and / or heating the battery cells 10 intended. The tempering device 33 includes two on opposite sides of the battery cells 10 arranged cooling plates 34 . 34 ' which are provided with channels for a fluid. The cooling plates 34 . 34 ' In an operation, an air-conditioning coolant or a cooling fluid flows through as cooling fluid. About the cooling plates 34 . 34 ' If necessary, a heating of the battery cells 10 For example, at low outside temperatures, possible. For this purpose, the cooling plates 34 34 ' flows through a warm fluid. The cooling plates 34 . 34 ' are preferably formed of a metallic material. All cell holders 25 are with the two cooling plates 34 . 34 ' connected. All cell holders 25 are with the two cooling plates 34 . 34 ' screwed. Basically, the temperature control 33 only one of the cooling plates 34 . 34 ' exhibit.

To achieve a uniform and powerful cooling contact the cooling plates 34 . 34 ' thermally the electrical contact elements 13 . 14 the battery cells 10 and in each case the cell housings 12 the battery cells 10 , The first cooling plate 34 thermally contacts the electrical contact elements 13 on the one battery cell side and the second cooling plate 34 ' thermally contacts the electrical contact elements 14 on the other side of the battery cell. The two cooling plates 34 . 34 ' each contact the cell case 12 the battery cells 10 ,

To the contact elements 13 . 14 electrically from the cooling plates 34 . 34 ' isolate includes the cell block 11 a first heat-conducting foil 35 that is between the first cooling plate 34 and the contact elements 13 is arranged, and a second heat conducting foil 35 ' between the second cooling plate 34 ' and the contact elements 14 is arranged. The contact elements 13 and the first cooling plate 34 Contact over the first heat conducting foil 35 , The contact elements 14 and the second cooling plate 34 ' Contact via the second heat-conducting foil 35 ' , Alternatively or in addition to the Wärmeleitfolien 35 . 35 ' can the cell block 11 also have a potting compound, which has a gap between the cooling plates 34 . 34 ' and the respective contact elements 13 . 14 fills. Through the Wärmeleitfolien 35 . 35 ' and / or the potting compound can be a tolerance compensation.

To the cold plates 34 . 34 ' with the cell cases 12 the battery cells 10 thermally bring in contact, the cell holders 25 one heat-conducting element each 26 which is intended to heat between the cell housing 12 at least one of the battery cells 10 and at least one of the cooling plates 34 . 34 ' to transport. The heat-conducting elements 26 are each intended to heat the cells between the cells 12 two adjacent battery cells 10.1 . 10.2 and the two cold plates 34 . 34 ' to transport. The heat-conducting elements 26 thermally contact each cell case 12 two adjacent battery cells 10.1 . 10.2 and in each case both cooling plates 34 . 34 ' , They each connect the cell housing 12 two adjacent battery cells 10.1 . 10.2 and both cold plates 34 . 34 ' thermally with each other. The heat-conducting elements 26 are along a stacking direction 37 considered in each case between two battery cells 10.1 . 10.2 arranged. Along the stacking direction 37 are the battery cells 10 and / or the cell holders 25 arranged one behind the other.

Basically, the as pressure goggles 23 . 24 trained cell holder also such heat conducting elements 26 exhibit.

The heat-conducting elements 26 and the respective cell housing 12 contact directly. The respective cell housing 12 lies on the heat conducting element 26 at. The heat-conducting elements 26 and the first cooling plate 34 Contact over the first heat conducting foil 35 , The heat-conducting elements 26 and the second cooling plate 34 ' Contact via the second heat-conducting foil 35 ' , The heat-conducting elements 26 are each formed as a Wärmeleitblech. They are each designed as a cooling plate. The heat-conducting elements 26 are made of a good thermal conductivity material, preferably of metal, such as aluminum or copper. Basically, the cell block 11 one between each cell housing 12 and the heat conducting element 26 Have arranged heat conducting foil, in particular when the cell housing 12 is formed of an electrically conductive material, whereby the cell housing 12 and the heat-conducting element 26 contact via the heat-conducting foil. Alternatively or in addition to the heat-conducting film between the cell case 12 and the heat conducting element 26 can the cell block 11 also have a potting compound, which has a gap between the cell housing 12 and the respective heat conducting element 26 fills. The heat-conducting elements 26 and the cell holders 25 are analogous to each other, therefore, hereinafter only provided with the reference numeral heat conduction 26 of the cell holder 25 will be described in more detail.

The heat-conducting element 26 is between the two battery cells 10.1 . 10.2 arranged. It thermally contacts the cell case 12 the battery cell 10.1 , the cell case 12 the battery cell 10.2 , the first cooling plate 34 and the second cooling plate 34 ' , The plastic part 15 of the cell holder 25 is on the heat conducting element 26 sprayed. For the thermal contact surrounds the plastic part 15 only a part of the heat conducting element 26 , The heat-conducting element 26 is plate-shaped. The heat-conducting element 26 is integrally formed. It is molded in one piece.

For thermal contacting of the cell housing 12 of the two adjacent battery cells 10.1 . 10.2 includes the heat-conducting element 26 a first housing contact surface 27 that the cell case 12 the battery cell 10.1 contacted, and a second housing contact surface 27 ' that the cell case 12 the battery cell 10.2 contacted. The housing contact surfaces 27 . 27 ' are oriented parallel to each other. The housing contact surface 27 . 27 ' are turned away from each other. The housing contact surfaces 27 . 27 ' are arranged freely accessible. The plastic part 15 is in the way on the heat conducting element 26 arranged, in particular poured or sprayed, so that the housing contact surfaces 27 . 27 ' exposed and / or thermally contacted.

For thermal contacting of the cooling plates 34 . 34 ' includes the heat-conducting element 26 two first cooling plate contact surfaces 28 . 28 ' that the first cooling plate 34 thermally contact, and two second cooling plate contact surfaces 29 . 29 ' that the second cooling plate 34 ' contact thermally. The first cooling plate contact surfaces 28 . 28 ' contact over the first heat conducting foil 35 the first cooling plate 34 , The second cooling plate contact surfaces 29 . 29 ' contact via the second heat-conducting foil 35 ' the second cooling plate 34 ' , The cooling plate contact surfaces 28 . 28 ' . 29 . 29 ' are oriented parallel to each other. The first cooling plate contact surfaces 28 . 28 ' and the second cooling plate contact surfaces 29 . 29 ' are turned away from each other. The first cooling plate contact surfaces 28 . 28 ' are arranged in a common plane. The second cooling plate contact surfaces 29 . 29 ' are arranged in a common plane. The common plane of the first cooling plate contact surfaces 28 . 28 ' and the common plane of the second cooling plate contact surfaces 29 . 29 ' are arranged parallel spaced from each other. The first cooling plate contact surfaces 28 . 28 ' are spaced apart in their common plane. They are along one direction 36 perpendicular to the stacking direction 37 and parallel to the cooling plates 34 . 34 ' oriented, spaced from each other. The second cooling plate contact surfaces 29 . 29 ' are spaced apart in their common plane. They are along the direction 36 perpendicular to the stacking direction 37 and parallel to the cooling plates 34 . 34 ' oriented, spaced from each other. Along the direction 36 perpendicular to the stacking direction 37 and parallel to the cooling plates 34 . 34 ' is oriented, are the overlapping contact elements of two adjacent battery cells 10 on the one battery cell side between the two first cooling plate contact surfaces 28 . 28 ' and the overlapping contact elements of two adjacent battery cells 10 on the other battery cell side between the two second cooling plate contact surfaces 29 . 29 ' arranged. Along one direction 46 that is perpendicular to the direction 36 and perpendicular to the stacking direction 37 is oriented, are the cooling plate contact surfaces 28 . 28 ' . 29 . 29 ' each spaced from the housing contact surfaces 27 . 27 ' arranged. The housing contact surfaces 27 . 27 ' are each larger than the cooling plate contact surfaces 28 . 28 ' . 29 . 29 ' , The cooling plate contact surfaces 28 . 28 ' . 29 . 29 ' are arranged freely accessible. The plastic part 15 is in the way on the heat conducting element 26 arranged, in particular poured or sprayed, so that the cooling plate contact surfaces 28 . 28 ' . 29 . 29 ' exposed and / or thermally contacted. The direction 46 is perpendicular to the cooling plates 34 . 34 ' and perpendicular to the stacking direction 37 oriented.

The housing contact surfaces 27 . 27 ' and the cold plate contact surfaces 28 . 28 ' . 29 . 29 ' are oriented at an angle to each other. The housing contact surfaces 27 . 27 ' and the cold plate contact surfaces 28 . 28 ' . 29 . 29 ' are oriented perpendicular to each other. The housing contact surfaces 27 . 27 ' are parallel to the stacking direction 37 directed. They are each in a plane perpendicular to the stacking direction 37 is oriented. The housing contact surfaces 27 . 27 ' each lie in a plane perpendicular to the cooling plates 34 . 34 ' is oriented. The cooling plate contact surfaces 28 . 28 ' . 29 . 29 ' are each perpendicular to the stacking direction 37 directed. They are each in a plane parallel to the stacking direction 37 is oriented. The cooling plate contact surfaces 28 . 28 ' . 29 . 29 ' each lie in a plane parallel to the cooling plates 34 . 34 ' is oriented.

The heat-conducting element 26 has four connecting bridges 38 . 39 . 40 . 41 on, each the housing contact surfaces 27 . 27 ' and one of the cooling plate contact surfaces 28 . 28 ' . 29 . 29 ' connect with each other. The two first connecting bridges 38 . 39 connect the two first cooling plate contact surfaces 28 . 28 ' with the housing contact surfaces 27 . 27 ' , The two first connecting bridges 38 . 39 are along the direction 36 considered spaced apart. The two first connecting bridges 38 . 39 arrange the first cooling plate contact surfaces 28 . 28 ' along the direction 46 spaced from the housing contact surfaces 27 . 27 ' and direct the first cooling plate contact surfaces 28 . 28 ' angled to the housing contact surfaces 27 . 27 ' out. The two second connecting bridges 40 . 41 connect the two second cooling plate contact surfaces 29 . 29 ' with the housing contact surfaces 27 . 27 ' , The two second connecting bridges 40 . 41 are along the direction 36 considered spaced apart. The two second connecting bridges 40 . 41 arrange the second cooling plate contact surfaces 29 . 29 ' along the direction 46 spaced from the housing contact surfaces 27 . 27 ' and direct the second cooling plate contact surfaces 29 . 29 ' angled to the housing contact surfaces 27 . 27 ' out. The connecting bridges 38 . 39 . 40 . 41 with the respective cooling plate contact surface 28 . 28 ' . 29 . 29 ' are T-shaped. The connecting bridges 38 . 39 . 40 . 41 each form a shaft of the T-shape. A distance along the direction 36 between the first connecting bridges 38 . 39 and a distance along the direction 36 between the second connecting webs 40 . 41 is through the plastic part 15 of the cell holder 25 filled.

LIST OF REFERENCE NUMBERS

10

battery cell

10.1

battery cell

10.2

battery cell

11

cell block

12

cell case

13

contact element

14

contact element

15

Plastic part

18

electrode pack

23

pressure glasses

24

pressure glasses

25

cell holder

26

thermally conductive element

27

Housing contact area

27 '

Housing contact surface

28

Cooling plate contact area

28 '

Cooling plate contact area

29

Cooling plate contact area

29 '

Cooling plate contact area

30

Motor vehicle battery

31

battery case

32

electronics

33

tempering

34

cooling plate

34 '

cooling plate

35

Heat conducting

35 '

Heat conducting

36

direction

37

stacking direction

38

connecting web

39

connecting web

40

connecting web

41

connecting web

42

internal combustion engine

43

electric motor

44

drive wheel

45

edge

46

direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102008034867 A1 [0002]

Claims (10)

Cell block for a motor vehicle battery ( 30 ), with a plurality of series-connected and / or parallel-connected battery cells ( 10 ), each one cell housing ( 12 ) and in each case at least one electrical contact element ( 13 . 14 ) for electrical connection, and with at least one for cooling and / or heating the battery cells ( 10 ) provided tempering device ( 33 ) containing at least one cooling and / or heating plate ( 34 . 34 ' ) having the at least one contact element ( 13 . 14 ) at least one of the battery cells ( 10 ) and the cell housing ( 12 ) at least one of the battery cells ( 10 ) contacted thermally. Cell block according to claim 1, characterized by at least one for fixing at least one of the battery cells ( 10 ) provided cell holder ( 25 ), the at least one heat conducting element ( 26 ), the cell housing ( 12 ) of the at least one battery cell ( 10 ) and the at least one cooling and / or heating plate ( 34 . 34 ' ) thermally interconnects. Cell block according to claim 2, characterized in that the heat-conducting element ( 26 ) at least one housing contact surface ( 27 . 27 ' ) for the thermal contacting of the cell housing ( 12 ) and at least one cooling and / or Heizplattenkontaktfläche ( 28 . 28 ' . 29 . 29 ' ) for the thermal contacting of the at least one cooling and / or heating plate ( 34 . 34 ' ), wherein the at least one housing contact surface ( 27 . 27 ' ) and the at least one cooling and / or Heizplattenkontaktfläche ( 28 . 28 ' . 29 . 29 ) are oriented at an angle to each other. Cell block according to claim 3, characterized in that the heat-conducting element ( 26 ) at least one connecting web ( 38 . 39 . 40 . 41 ), the at least one housing contact surface ( 27 . 27 ' ) and the at least one cooling and / or Heizplattenkontaktfläche ( 28 . 28 ' . 29 . 29 ' ) connects to each other. Cell block according to claim 3 or 4, characterized in that the heat-conducting element ( 26 ) at least one further cooling and / or Heizplattenkontaktfläche ( 28 . 28 ' . 29 . 29 ' ) for the thermal contacting of the at least one cooling and / or heating plate ( 34 . 34 ' ), wherein the at least one electrical contact element ( 13 . 14 ) at least one of the battery cells ( 10 ) between the two cooling and / or Heizplattenkontaktflächen ( 28 . 28 ' . 29 . 29 ' ) is arranged. Cell block according to claim 5, characterized in that the at least two cooling and / or Heizplattenkontaktflächen ( 28 . 28 ' . 29 . 29 ' ) are arranged in a common plane. Cell block according to one of claims 2 to 6, characterized in that the cell holder ( 25 ) at least one plastic part ( 15 ), which on the at least one heat conducting element ( 26 ) is infused or sprayed on. Cell block according to one of claims 2 to 7, characterized in that the heat-conducting element ( 26 ) is plate-shaped. Cell holder for a cell block ( 11 ) of a motor vehicle battery ( 30 ) with at least one heat conducting element ( 26 ), which is intended to be a cell housing ( 12 ) at least one battery cell ( 10 ) and at least one cooling and / or heating plate ( 34 . 34 ' ) thermally connect to each other. Motor vehicle high-voltage battery with at least one cell block ( 11 ) according to one of claims 1 to 8.

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