DE102011101022A1 - Battery pack mounted in motor vehicle e.g. electric vehicle, has device for electrical contact with positive terminal or device for electrical contact with negative pole, which is integrated in bottom side of housing - Google Patents

Abstract

The battery pack has a bottom-side holding device (5) which is arranged at bottom side (3) of housing (1), and cover-side holding device is arranged on one side of cover (2) of the housing. A device for electrical contact with positive terminal is electrically contacted with positive terminal of battery cell, and the device for electrical contact with negative terminal is contacted with negative terminal of battery cell. The device for electrical contact with positive terminal or the device for electrical contact with negative pole is integrated in the bottom side of housing. An independent claim is included for arrangement for mounting battery cells.

Description

The invention relates to a battery pack, an arrangement for holding a plurality of batteries and a method for producing a battery pack.

There is an increasing demand in the field of automobiles to provide alternatives for driving these vehicles with internal combustion engines that burn fossil fuels. One such alternative is electric or hybrid vehicles powered entirely or partially by electrical energy. The electrical energy is stored in a so-called traction battery and is converted in a motor operation by means of appropriate power electronic elements and an electric machine into mechanical drive energy. In a generator operation kinetic energy of the motor vehicle can be converted into electrical energy, which in turn is stored in the traction battery.

A traction battery usually consists of a plurality of batteries or accumulators, the u. a. Also referred to as battery cells. These may be combined in so-called battery packs, wherein the traction battery may include one or more such battery packs. In high-voltage storage systems, ie z. B. for the training of traction batteries, u. a. used prismatic or cylindrical lithium-ion cells. Here, a distinction can be made between so-called automotive cells and so-called consumer cells. Among the group of consumer cells are also the so-called 18650 cells, which are cylindrically shaped. Today, these 18650 cells are predominantly used in electrical appliances of the white industry or home appliance industry. However, a use in automotive technology is conceivable, for example, the company Tesla Motors uses lithium-ion cells with a 18650 form factor. Due to their actual field of application, these 18650 cells are small in terms of installation space and have a low capacity, but usually a high energy density. Due to the small capacity of the 18650 cells, it is necessary to electrically connect a plurality of them to meet requirements of a traction battery. This circumstance necessitates that a high level of process reliability is required when making electrical contact with these plurality of 18650 cells and with corresponding tolerance compensation when arranging these cells in a battery pack comprising these cells. Furthermore, it is necessary that in case of a defect of a battery pack or a single cell, which z. B. a thermal event, eg. As fire, may result in an attack on other cells or battery packs is prevented. Other requirements are flexible electrical wiring options between individual battery packs and their ability to attach to structural components of an electric or hybrid vehicle and a lightweight construction of the battery pack comprising a plurality of battery pack.

The WO 2008/074034 A1 discloses a battery module that includes a plurality of battery cells. The battery module comprises a housing, a bottom-side holding device and a cover-side holding device. At least the bottom-side holding device has several. Receiving devices for receiving battery cells. The battery cells can be arranged in these receiving devices. Furthermore, the document discloses that a cover-side holding device has a greater receiving tolerance than the bottom-side holding device. To attach, in particular terminals, of battery cells so-called cell clamp plates are necessary. Further, the document discloses a bus bar for electrically contacting the battery cells, which are not firmly integrated into the housing. There is the technical problem of providing a battery pack and an arrangement for supporting a plurality of battery cells, which at the same time a mechanically secure mounting of battery cells allow good electrical contactability, the battery pack is inexpensive, weight-optimized and can be produced with high process reliability and at the same time offers improved contact protection during and after the assembly with battery cells.

The solution of the technical problem arises from the objects with the features of claims 1 and 12. Further advantageous embodiments of the invention will become apparent from the dependent claims.

Proposed is a battery pack. The battery pack includes a plurality of battery cells. In particular, the battery pack comprises a plurality of so-called 18650 cells, which may be designed as lithium-ion cells. The battery pack may also include cells having cell chemistry other than 18650 cell chemistry, such as nickel-metal hydride cells. Also, the battery cells may have a shape factor other than the 18650 shape factor, such as a 26650 form factor. The battery cells can in this case be designed in particular cylindrical or prismatic. However, another training, for. B. a rectangular shape, possible. A battery cell here refers to a single battery or a single accumulator.

Furthermore, the battery pack comprises an arrangement for holding a plurality of Battery cell, at least one device for electrically contacting a positive pole of at least one battery cell of the plurality of battery cells and at least one device for electrically contacting a negative pole of the at least one battery cell of the plurality of battery cells.

The battery pack forms in particular a traction battery or a part of a traction battery of an electric or hybrid vehicle, wherein in the battery cells of the battery pack electrical energy for driving the electric or hybrid vehicle can be stored.

The arrangement for holding the battery cells comprises at least one housing. In this case, the housing may in particular be of cuboid shape, with a cuboid having a cover side, a bottom side and four wall sides. Furthermore, the arrangement for holding at least one bottom-side holding device and at least one lid-side holding device. The bottom-side holding device is arranged on the bottom side of the housing or forms this bottom side. Furthermore, the base-side holding device can have a plurality of receiving devices for receiving battery cells.

The cover-side holding device is arranged on a cover side of the housing or forms this cover side. The cover-side holding device may also have a plurality of receiving devices for receiving battery cells.

The plurality of battery cells may be arranged between the bottom-side and the lid-side holding device. In particular, the plurality of battery cells can be arranged in corresponding receiving devices of the lid-side and bottom-side holding device. This z. B. a foot-side end of a battery cell on the cover-side holding device, in particular in a receiving device of the lid-side holding device, and a head-side end of the battery cell to the bottom-side holding device, in particular in a corresponding receiving means of the bottom-side holding device, be arranged.

Furthermore, the at least one device for electrically contacting a positive pole contacts at least one positive pole of a battery cell, which is preferably arranged in corresponding receiving devices of the cover-side and bottom-side holding devices. Accordingly, the at least one device for making electrical contact with a negative pole contacts at least one negative pole of the battery cell, which is preferably arranged in the corresponding receiving devices of the cover-side and bottom-side holding devices. Preferably, a device for electrically contacting a positive pole or several devices for making electrical contact with a positive pole contacts one or more positive poles of battery cells arranged in corresponding receiving devices. Correspondingly, a device for making electrical contact with a negative pole or several devices for making electrical contact with one or more negative poles contacts at least one or more negative poles of battery cells arranged in the corresponding receiving devices.

According to the invention, the at least one device for electrically contacting a positive pole or the at least one device for electrically contacting a negative pole is integrated in the bottom side of the housing. If the housing, in particular the base-side holding device and possibly also the wall sides, made of plastic, for example by means of an injection molding process, the device may be poured or injected for electrical contacting in the bottom side or the bottom-side holding device of the housing. Preferably, the bottom side is not detachably connected to the wall sides, for example formed integrally with the wall sides. The device for electrical contacting is in this case integrated during the manufacture or manufacture of the housing in the housing, in particular in its bottom side. Preferably, the device for electrical contacting in the integrated state is at least partially encased by the bottom side, wherein the sheath may have openings for electrical and thermal contacting of the device for electrical contacting.

Preferably, the device for electrically contacting a positive pole is integrated in the bottom side of the housing.

The integration of the device for electrical contacting results in an improved manner an improved contact protection of the device for electrical contacting during and after the assembly of the housing with battery cells.

In a further embodiment, the at least one device for electrically contacting at least one negative terminal of at least one battery cell is mechanically rigid with the at least one negative pole of the at least one battery cell and / or the at least one device for electrically contacting at least one positive pole of at least one battery cell is mechanically rigid with the at least one a positive pole of at least a battery cell is connected. Mechanically rigid here means that no or only a very small relative movement between the battery cell and the device for electrical contacting in the connected state is possible.

Preferably, the at least one device for making electrical contact with at least one negative pole is connected to the at least one negative terminal of the at least one battery cell by means of a laser welding method, whereby the battery cell is connected minuspolseitig mechanically to the device for electrically contacting the at least one negative pole. For example, in a first step, the device for making electrical contact with at least one negative pole can be mechanically rigidly connected to the negative pole and then the assembly consisting of means for electrically contacting the at least one negative pole and the battery cell can be inserted into the housing from a cover side. In this case, therefore, the device for making electrical contact with the at least one negative pole forms at least part of the cover-side holding device.

Thereafter, it is possible in a second step that the at least one means for electrically contacting at least one positive pole is connected by means of a laser welding process with the at least one positive pole of the at least one battery cell, whereby the battery cell and positive pole side mechanically with the means for electrically contacting the at least a plus pole is connected. This results in an advantageous manner a clearly mechanically defined seat of the battery cell in the housing.

Due to the mechanically rigid attachment results in an advantageous manner that in addition to a good electrical contact and a good thermal contact of the battery cell is achieved. In particular, a good thermal contact of a battery cell minuspolseitig be achieved, wherein z. B. a heat sink to the device for electrical contacting of at least one negative pole can be arranged, which cools the battery cells minuspolseitig via the means for making electrical contact with the at least one negative pole.

Alternatively, it is possible in the second step, the at least one device for electrically contacting at least one positive pole mechanically flexible, z. Example, by means of a wire bonding method to connect to the at least one positive pole of the at least one battery cell. Mechanically flexible here means that a relative movement between the battery cell and the device for electrical contacting is possible even in the connected state, whereby z. B. manufacturing tolerances in the positioning of the battery cells in the housing can be compensated in an advantageous manner.

In a further embodiment, the base-side holding device has a plurality of receiving devices for receiving battery cells and the lid-side holding device has a plurality of receiving devices for receiving battery cells, wherein the plurality of battery cells are arranged in corresponding receiving devices of the lid-side and bottom-side holding device.

The battery cell is not complete, but only their head and foot areas, arranged in the corresponding receiving devices. This results in an advantageous manner that a gap between the arranged in the receiving devices battery cells z. B. from a cooling fluid, for. As air can be flowed through.

The receiving device serves for a mechanical support, in particular a mechanical fixing of the battery cell arranged in the receiving device. In this case, a receiving device adapted to a physical training of the battery cell to be arranged in it can be formed. If the battery cells to be arranged in the receiving devices are for example cylindrically shaped, the receiving device can be at least partially circular in cross-section, wherein a radius of the circle is selected as a function of a radius of the cylindrical battery cell.

The receiving devices prevent movement of the battery cells arranged in them relative to the housing, in particular to the wall sides, the cover side and the bottom side.

The receiving devices of the cover-side and / or the bottom-side holding device each have at least one spring element. The spring element exerts a predetermined spring force on a battery cell arranged in the respective receiving device. The predetermined spring force serves as a holding force for the mechanical fixing of a battery cell. When arranging or inserting a battery cell in a receiving device, the spring element can be deflected from an initial state of the spring element, wherein the force exerted after placement or insertion spring force is proportional to the deflection of the spring element during the placement or insertion. In the initial state, the spring element may already be biased.

The spring element allows this in an advantageous manner as simple and detachable mechanical fastening, fixing and mounting a battery cell, which results in an advantageous manner that z. B. individual, defective battery cells can be replaced without having to dissolve the remaining battery cells from their holder. The spring elements also allow the simplest possible and secure mechanical fastening of the battery cells during a wire-bonding method for the electrical connection of positive poles and / or negative poles of the battery cells to the corresponding devices for electrical contacting. For this purpose, first the battery cells are inserted into the base-side and / or cover-side holding devices and hereafter the electrical connection is established by means of a wire-bonding method.

The spring elements can be formed here as part of the bottom-side and cover-side holding device. For example, the spring elements can be formed in a common manufacturing step, for example in an injection molding process, with the cover-side or bottom-side holding device.

The cover-side holding device and / or the bottom-side holding device may be formed in particular as a holding or positioning grid. The holding or positioning grid can in this case form the receiving devices according to the invention and the spring elements. In particular, the receiving devices may be arranged in honeycomb shape on a surface of the holding or positioning grid. The holding or positioning grid in this case is preferably made of plastic or a metal structure, with an insulating material, eg. As plastic, is coated.

A bottom-side holding or positioning grid may have raised webs over a surface of the positioning grid, wherein the webs represent edges or boundaries between individual receiving devices. Further, the bottom-side holding or positioning grid may have openings, wherein one dimension, for. As a diameter, an opening smaller than external dimensions, z. B. is a diameter, a battery cell. For example, the webs described above may include a circular portion of the surface of the bottom-side holding or positioning grid, wherein a radius or diameter of this circular portion of a radius or diameter z. B. corresponds to a cylindrical battery cell. Here, the webs may be formed such that at least a portion of a ridge protrudes into the front of this web encompassed circular portion of the surface. If a battery cell is inserted into the receiving device, which is formed by the circular section of the surface and the webs comprising this section of the surface, the section of the web projecting into the circular section is pressed radially outwards. This section of the web here represents an inventive spring element which exerts a predetermined spring force on the inserted into the receiving device battery cell after the radial displacement. In the region of the circular section of the surface of the base-side holding or positioning grid, in particular in a central region, the opening described above can be arranged. As explained in more detail below, an electrical contacting of the battery cell arranged in the receiving device can take place through the opening.

The described embodiment of the bottom-side holding device advantageously allows a cost-effective and simple production of the bottom-side holding device, in particular by means of an injection molding process.

Also webs may include or limit a rectangular or polygonal portion of the surface of the bottom-side holding or positioning grid.

A cover-side holding or positioning grid may have corresponding webs or web elements whose sections are also formed as a spring element. Preferably, however, the webs comprise an opening of the cover-side holding or positioning grid. If the webs of a receiving device are arranged, for example, along a circumference of a circular subsection of a surface of the cover-side holding or positioning grating, the webs comprise a circular opening whose radius is equal to a radius of the circular subsection. If the radius of the opening corresponds to the radius of a cylindrical battery cell, then the cover-side holding or positioning grid can be arranged between lateral surfaces of battery cells and does not lie on z. B. a head or base of the battery cell. The thus maximum opening advantageously results in an improved electrical contactability of the battery cell arranged in the receiving device.

Preferably, battery cells are arranged in the battery pack such that positive poles of all the battery cells arranged in the battery pack are oriented towards the bottom side and negative poles of the battery cells toward the cover side. It is also conceivable that positive poles of all the battery cells arranged in the battery pack are oriented towards the lid side and negative poles of these battery cells towards the bottom side.

For example, only the bottom-side holding device may have a plurality of receiving devices, wherein in these receiving devices positive poles of the battery cells to be arranged therein are arranged and mechanically flexibly connected to at least one device for electrically contacting at least one positive pole. On the negative pole side, the battery cells can be mechanically rigidly connected to at least one device for electrically contacting at least one negative pole. In this case, only the bottom-side holding devices each have at least one spring element.

In a further embodiment, the at least one spring element of the receiving devices of the bottom-side holding device and / or the at least one spring element of the receiving devices of the lid-side holding device exerts an axial spring force on the battery cell arranged in the receiving device. Preferably, only a receiving device of the bottom-side holding device on a spring element which exerts an axial spring force on the arranged in the receiving device battery cell. An axial spring force in this case denotes a spring force, which is oriented perpendicular to a surface of the bottom-side holding device and / or lid-side holding device. For example, the bottom-side holding device may have at least one spring tongue, with a freestanding end of the spring tongue projecting beyond a surface of the bottom-side holding device. Are z. B. circular sections of a surface of a bottom holding or positioning grid of previously described webs, such spring tongues may be arranged in the encompassed by the webs circular portion of the surface of the holding or positioning grid. Preferably, a plurality, for example three, spring elements, which exert an axial spring force, arranged in this circular area. In this case, the spring tongues may, for example, have an L-shaped profile in a cross-section, wherein a first leg is arranged in a plane of the surface of the bottom-side holding device and a second leg protrudes from this surface of the bottom-side holding device. Here, the bottom-side holding device is arranged with respect to the housing that the free-standing end of the spring tongue projects into an inner volume of the housing. If a battery cell is inserted into the receiving device, wherein a head or base surface of the battery cell rests against at least a portion of the surface of the bottom holding device in the region of the receiving device, the spring tongue is deflected against a spring force of this spring tongue, whereby they in the inserted state of the battery cell predetermined spring force exerted on the battery cell in the axial direction.

This advantageously results in an easy-to-manufacture device for axially fixing a battery cell, which prevents slippage of the battery cell relative to the bottom and lid side in a clamped state of the battery cell.

Also, a cover-side holding or positioning grid may have or form such spring tongues. However, this is only possible if the previously described openings of a cover-side retaining or positioning grid have a smaller dimension, for example a smaller diameter, than outer dimensions or dimensions, for example diameter, of battery cells to be inserted into the receiving means of the cover-side holding or positioning grid.

In a further embodiment, the at least one spring element or a further spring element of the receiving devices of the bottom-side holding device and / or the at least one spring element or a further spring element of the receiving devices of the lid-side holding device exerts a radial spring force on the battery cell arranged in the receiving device. In this case, a radial spring force denotes a spring force with a direction of the spring force which is parallel to a surface of the bottom-side and / or cover-side holding device. In particular, the radial spring force and the previously described axial spring force include a right angle. Such a spring element, which exerts a radial spring force, can, for example, as described above, formed as a portion of a from a surface of the bottom-side or cover-side holding device, in particular from a surface of a bottom-side holding or positioning grid or a cover-side holding or positioning grid, raised ridge be. Such spring elements advantageously prevent slippage of the battery cell arranged in the receiving device relative to side walls of the housing.

Preferably, a receiving device of the bottom-side holding device has at least one spring element which exerts an axial spring force on the battery cell arranged in the receiving device, and at least one further spring element which exerts a radial spring force on the battery cell arranged in the receiving device.

Further preferably, a corresponding receiving device of the cover-side holding device has one or more spring elements on, which exerts only a radial spring force on the arranged in the receiving device battery cell.

In a further embodiment, the housing has at least one partition, wherein the at least one partition divides an internal volume of the housing into at least two battery chambers. In this case, a predetermined number of battery cells can be arranged in each chamber. The arranged in a battery chamber battery cells can also be referred to as a sub-package. This results in an advantageous manner, a spatial separation of sub-packages and improved mechanical and / or thermal insulation of battery cells of different sub-packages. In particular, battery cells of a sub-package can be electrically connected in parallel and different sub-packages can be electrically connected in series. In this way, advantageously, a battery pack can be divided into subpackets, which in turn comprise a plurality of battery cells, such that a desired capacity of the battery pack can be ensured.

In a further embodiment, the at least one device for electrically contacting a positive pole is designed as a positive terminal-side contacting plate, the positive pole-side contacting plate being arranged on the cover side or the bottom side, and positive poles with at least a first number of battery cells arranged in the housing, in particular in the receiving devices the positive pole side contacting plate are electrically connected. If the positive poles are oriented towards a bottom side by battery cells arranged in the battery pack, then the at least one positive pole-side contacting plate is integrated in a bottom side of the housing. If the battery cells are arranged in the battery pack such that positive poles of the battery cells are oriented toward a cover side, then the at least one positive pole-side contacting plate is arranged on a cover side. The contacting plate contacts in this case positive poles of a plurality of battery cells arranged in the housing, in particular in the receiving devices, which are thus electrically connected in parallel. An electrical contact between the battery cells and positive pole-side contacting plate is preferably carried out by means of a bonding method, in particular a Drahtbonding method. The electrical contacting takes place in an advantageous manner by the previously described openings in the bottom and / or cover-side holding device.

Alternatively or cumulatively, the at least one device for making electrical contact with a negative pole is formed as a minus pole-side contacting plate, the minus pole-side contacting plate being arranged on the cover side or the bottom side, and minus poles of at least one further number of battery cells arranged in the housing, in particular in the receiving devices minus pole side contacting plate are electrically connected.

Preferably, negative poles of all the battery cells arranged in the battery pack can be electrically contacted by means of a negative pole-side contacting plate, which is arranged, for example, on the cover side. Also, in particular in this case, positive poles of all the battery cells arranged in the battery pack can be electrically contacted by means of a positive-pole-side contacting plate, which is integrated into a bottom side. The negative pole-side contacting plate can in this case be mechanically rigid or mechanically flexible connected to the negative poles. The positive pole-side contacting plate is preferably mechanically flexibly connected to the positive poles. The contacting plates can in this case for example be electrically connected to the housing, for example injected or cast, or arranged on the housing external connection points, by means of which the battery pack is electrically contacted, for example, electrically connectable to a traction network of an electric or hybrid vehicle. By forming the means for electrical contacting as contacting plates results in an easy way contacting a plurality of arranged in the battery pack battery cells.

In a further embodiment, the battery pack per battery chamber on a positive pole side and a minus pole side contacting plate on. Per battery chamber in this case the positive pole side contacting plate is arranged on the cover side or integrated into the bottom side of the battery chamber, with positive poles of all, in particular in the receiving devices, the respective battery chamber arranged battery cells are electrically connected to the positive pole side contacting plate. Further, the minus pole-side contacting plate is integrated into the bottom side or disposed on the lid side of the battery chamber, wherein negative poles of all, in particular in the receiving devices, the battery chamber arranged battery cells are electrically connected to the minus pole side contacting plate. If the battery cells of the respective battery chamber are arranged in the housing in such a way that positive poles of the battery cells are oriented towards a cover side, the positive pole-side contacting plate is arranged on the cover side of the housing. In this case, the negative pole side contacting plate is integrated in the bottom side of the housing. In a reverse arrangement of the battery cells in the battery chamber is the minus pole side contacting plate on a cover side of the Housing and the positive pole side contacting plate integrated into the bottom side of the housing. This results in an advantageous manner as simple as possible electrical contacting of all battery cells of a sub-package, so all the battery cells of a battery chamber. In this case, all battery cells of this sub-package are electrically connected in parallel.

In a further embodiment, a negative pole-side contacting plate of at least one first battery chamber is electrically connected to a positive pole-side contacting plate of a battery chamber adjacent to the first battery chamber. Alternatively, a positive pole side contacting plate of at least the first battery chamber may be electrically connected to a minus pole side contacting plate of the battery chamber adjacent to the first battery chamber. As a result, it is possible in an advantageous manner to electrically connect partial packages of battery cells which comprise battery cells connected electrically in parallel. For this purpose, the positive pole-side and / or negative pole-side contacting plates can have or form contact tongues. A contact tongue may, for example, project perpendicularly from a surface of the contacting plate and have an angled or S-shaped profile. As a result, on the one hand, an integrated in the bottom side contacting plate with electrically arranged on a cover side contacting plate of an adjacent battery chamber, wherein the contacting plate of the adjacent battery chamber is laterally offset from the first contacting plate arranged in the housing. Preferably, the contacting plates or the contact tongues formed by the contacting plates are electrically connectable by means of a laser welding method. The contact tongue or contact tongues can also be integrated, in particular injected or cast, into the housing, in particular in the wall sides of the housing.

In this way, a battery pack can be created in an advantageous manner, which has a desired capacity and a desired output voltage.

In a further embodiment, the battery pack comprises at least one first cover plate, wherein the first cover plate is arranged on the cover side, if positive poles of the battery cells arranged in the housing, in particular in the receiving devices, are oriented towards a cover side. Alternatively, the first cover plate is arranged on the bottom side, if positive poles of the battery cells arranged in the housing, in particular in the receiving devices, are oriented towards a bottom side of the housing. The first cover plate has predetermined breaking points or so-called bursting regions in the regions corresponding to the receiving device. For example, the first cover plate may be perforated in the areas corresponding to the receiving device. As a rule, a positive pole side of a battery cell, in particular a 18650 cell, is regarded as the structurally weakest link in the battery cell. In the case of a cell defect or cell damage, flames and / or solid particles can escape predominantly on this positive pole side. So that flames or solid particles emerging in this way are not prevented from leaving the battery cell or not leaving the battery pack, the first cover plate has predetermined breaking points in areas corresponding to the positive pole sides of the battery cells arranged in the battery pack. In the case of a defect, flames and / or solid particles can break through the first cover plate in these areas and thus advantageously exit from an inner volume of the battery pack. This results in an advantageous manner an increased reliability of the battery pack according to the invention.

In a further embodiment, the battery pack has at least one further cover plate, wherein the further cover plate is arranged on the cover side, if positive poles of the battery cells arranged in the housing, in particular in the receiving devices, are oriented towards a cover side. Alternatively, the further cover plate is arranged on the bottom side, if positive poles of the battery cells arranged in the housing, in particular in the receiving devices, are oriented toward a bottom side. The further cover plate has a predetermined temperature resistance and / or fire resistance. The additional cover plate can hereby z. B. form an air duct, wherein emerging from a battery cell flames and / or solid particles, optionally through a predetermined breaking point of a first cover plate, can flow into the air duct. The further cover plate advantageously results in the protection of further battery packs or other elements arranged in the electric or hybrid vehicle. This in turn results in an increased reliability of the battery pack according to the invention.

Further, the housing may have devices for receiving temperature sensors and / or electrical connection points or this device may be integrated into the housing. The electrical connection points can in this case be electrically connected to a positive pole side or negative pole side contacting plate. The connection points allow this in an advantageous manner an external electrical contacting of the battery pack according to the invention, for example, a connection to a traction network of an electric or hybrid vehicle.

Furthermore, it results in an advantageous manner that temperature sensors for monitoring an operating temperature of battery cells can be arranged in the housing.

Overall, it results in an advantageous manner that can be reduced by the proposed integration of the individual elements of the proposed battery pack, a space requirement, a weight and / or a mounting time for the battery pack according to the invention. Also, a functional safety in a production and installation of the battery pack can be further increased by a structurally related contact protection of the contacting plates in an advantageous manner. Furthermore, a series circuit of sub-packages can be performed as far as possible protected against contact.

Further proposed is an arrangement for holding a plurality of battery cells. The arrangement comprises at least one housing, at least one bottom-side holding device and at least one lid-side holding device. The bottom-side holding device is arranged on a bottom side of the housing or forms a bottom side of the housing. The bottom-side holding device has a plurality of receiving devices of battery cells. The cover-side holding device is arranged on a cover side of the housing or forms a cover side of the housing. The cover-side holding device has a plurality of receiving devices for receiving battery cells. In this case, a plurality of battery cells can be arranged in corresponding receiving devices of the lid-side and bottom-side holding devices. According to the invention, the receiving devices of the cover-side and / or the bottom-side holding devices each have at least one spring element which exerts a predetermined spring force on a battery cell arranged in the respective receiving device. This results in an advantageous manner, a mechanical fixation of the battery cells in the previously proposed battery pack.

Also proposed is a method for producing a battery pack, wherein a housing, at least one base-side holding device and at least one lid-side holding device, at least one device for electrically contacting a positive pole, at least one battery cell and at least one device for electrical contacting of a negative terminal provided the at least one battery cell becomes. The bottom-side holding device is arranged on a bottom side of the housing or forms the bottom side of the housing, wherein the bottom-side holding device may have a plurality of receiving devices for receiving battery cells. The cover-side holding device is arranged on a cover side of the housing or forms a cover side of the housing, wherein the cover-side holding device may have a plurality of receiving devices for receiving battery cells. A plurality of battery cells is arranged between the lid-side and bottom-side holding device, in particular in corresponding receiving devices. The at least one device for electrically contacting a positive pole is arranged on the housing such that it contacts at least one positive pole of at least one battery cell. The at least one device for making electrical contact with a negative pole is arranged on the housing such that it contacts at least one negative pole of the at least one battery cell. According to the invention, the at least one device for electrically contacting a positive pole or the at least one device for making electrical contact with a negative pole is integrated in the bottom side of the housing. This results in an advantageous manner, a method for producing a previously described battery pack.

The invention will be explained in more detail with reference to an embodiment. The figures show:

1 a perspective view of a housing,

2 another perspective view of in 1 shown housing,

3a a first negative terminal side contacting plate,

3b a second negative terminal side contacting plate,

3c a third negative terminal side contacting plate,

4 a perspective view of a housing with cover-side holding device,

5 a cover-side holding device,

6 a perspective view of a housing with inserted battery cells,

7 a perspective view of a housing with inserted pluspolseitigen contacting plates,

8a a first positive pole side contacting plate,

8b a second positive pole-side contacting plate,

8c a third positive pole-side contacting plate,

9 a perspective view of a housing with a first cover plate,

10 a perspective view of a housing with another cover plate,

11 a cross section through the in 10 illustrated battery pack,

12 a perspective view of a section of a housing and

13 another perspective view of a section of a housing.

Hereinafter, like reference numerals designate elements having the same or similar technical features.

In 1 is a housing 1 shown. The housing has a cover side 2 , a bottom side 3 and four wall sides 4 on. The housing 1 is cuboidal. At the bottom side 3 of the housing 1 is a bottom-side holding device 5 arranged on the ground side 3 of the housing 1 formed. The bottom-side holding device 5 has a plurality of receiving devices 6 on, in 1 by way of example only such a receiving device 6 is designated. At the bottom side 3 are still positive pole side contacting plates 7a . 7b . 7c arranged, the z. In 2 and 3 are shown. A second negative terminal side contacting plate 7b and a third negative pole-side contacting plate 7c have here Kontaktierungszungen 8b . 8c (see also 3b and 3c ), whose ends are in 1 are shown. The positive pole side contacting plates 7a . 7b . 7c are in the bottom side 3 and the contacting tongues 8b . 8c are in the wall sides of the housing 1 integrated, in particular cast. Next, the housing 1 terminals 9 for electrical contacting, wherein the connection contacts 9 on opposite side walls 4 are arranged. The housing 1 and the bottom-side holding device 5 serve to accommodate cylindrical battery cells 11 for example, in 6 are shown. At the edges of the housing 1 are threaded holes 12 provided for screwing the housing 1 with z. B. a in 10 shown further cover plate 13 serve. Next are in the side walls 4 of the housing 1 temperature sensors 10 arranged. Further illustrated are bearing surfaces 22 on the side walls 4 whose function is explained in more detail below.

Next is in 1 shown that the housing 1 partitions 15 which has an internal volume 16 of the housing 1 in a first battery chamber 17a , a second battery chamber 17b , a third battery chamber 17c , a fourth battery chamber 17d and a fifth battery chamber 17e split.

In 2 is that in 1 illustrated housing 1 shown in perspective, wherein the housing 1 is shown as transparent, that a first positive pole side contacting plate 7a , a second positive pole-side contacting plates 7b and a third positive pole-side contacting plate 7c is shown. The positive pole side contacting plates 7a . 7b . 7c and the contact tongues also shown 8b . 8c the second and third positive pole-side contacting plate 7b . 7c are here in the case 1 cast. The positive pole side contacting plates 7a . 7b . 7c are here with respect to the housing 1 below the in 1 illustrated bottom-side holding device 5 arranged.

In 1 and 2 is shown that recording devices 6 the bottom-side holding device 5 one opening each 14 having, through the opening 14 an electrical contact between negative poles 25 the z. In 6 illustrated battery cells 11 and the positive pole side contacting plates 7a . 7b . 7c can be done, for example by means of a Drahtbonding method.

Out 2 It can be seen that the first positive pole-side contacting plate 7a a first battery chamber 17a is assigned, wherein the first positive pole-side contacting plate 7a Pluspole all in the first battery chamber 17a arranged battery cells 11 electrically contacted. Analogously, the second pluspolseitigen contacting plates 7b a second, third and fourth battery chamber 17b . 17c . 17d and the third positive pole-side contacting plate 7c a fifth battery chamber 17e assigned.

In 3a is a first positive pole side contacting plate 7a shown. The first positive pole-side contacting plate is in this case from its outer dimensions to a shape of the first battery chamber 17a (please refer 2 ) customized. By means of the first positive pole-side contacting plate 7a is a first number of battery cells 11 (please refer 6 ) electrically contactable, in particular their positive poles. For this purpose, the first pluspolseitige contacting plate 7a so-called bonding sections 18 on.

In 3b and 3c are each a second positive pole side contacting plate 7b and a third positive pole-side contacting plate 7c shown. These have analogous to the first positive pole side contacting plate 7a (please refer 3a ) Bonding sections 18 for electrical contact in battery chambers 17b . 17c . 17d or in a fifth battery chamber 17e (please refer 2 ) arranged battery cells 11 (please refer 6 ) on. Next have the second and the third positive pole-side contacting plate 7b . 7c each contact tongues 8b . 8c on. The contact tongues extend perpendicular to a surface of the positive pole-side contacting plates 7b . 7c and thus are perpendicular to the surface of the positive pole-side contacting plate 7b . 7c from. A first end of the tongue is here on the positive pole side contacting plate 7b . 7c arranged. A free, second tongue end is in this case arranged laterally and vertically offset from the first tongue end. For this purpose, the contact tongues 8b . 8c a curved course. By the arrangement of the contact tongue 8b . 8c perpendicular to the plus-pole side contacting plate 7b . 7c In this case, a desired vertical distance of the second, free tongue end from the first tongue end or from the surface of the positive pole-side contacting plate 7b . 7c reached. The curved profile achieves a desired lateral offset or lateral offset of the second, free tongue end relative to the first tongue end. By means of the contact tongues 8b . 8c can, as in 1 shown, minus pole side contacting plates 19a . 19b . 19c concerning the housing 1 are arranged on the lid side (see 7 ) are contacted. For example, by means of the contact tongue 8b the second positive pole-side contacting plate 7b that of the second battery chamber 17b is assigned, a first minus pole side contacting plate 19a arranged on the cover side and the first battery chamber 17a is assigned to be contacted. This is advantageously a serial connection of electrically parallel-connected battery cells 11 a battery chamber 17a . 17b . 17c . 17d . 17e possible.

Next have the positive pole side contacting plates 7a . 7b . 7c circular holes 26 on, by, as explained in more detail below, in a defect flames or solid particles from battery cells 11 can escape. Here, the holes correspond 26 the positive pole side contacting plates 7a . 7b . 7c with positive poles in the receptacles 6 . 21 inserted battery cells 11 , Also serve the holes 26 for accessibility of the positive poles for electrical contacting.

In 4 is a perspective view of a housing 1 with inserted lid-side holding device 20 shown. The cover-side holding device 20 has honeycomb receptacles 21 on, of which only one receiving device 21 is provided with a reference numeral. The receiving device is formed here as a hollow holding cylinder. A diameter of a holding cylinder is equal to a diameter or approximately equal to a diameter of a battery cell 11 (please refer 6 ). The holding cylinders in this case form receiving devices 21 the cover-side holding device 20 out. In each case a cover-side receiving device 21 corresponds to a recording device 6 the bottom-side holding device (see 1 ). Correspond can z. B. mean that a central axis of the receiving device 21 the cover-side holding device 20 like a central axis of the receiving device 6 the bottom-side holding device 5 is. The cover-side holding device 20 is here on a cover page 2 of the housing 1 (please refer 1 ) hung up. For this purpose, the housing 1 on the side walls 4 arranged bearing surfaces 22 have on which side bars 23 the cover-side holding device 20 can be placed.

In 5 is a lid-side holding device 20 presented in isolation. Here it is shown that recording devices 21 , each one of a specific battery chamber 17a . 17b . 17c . 17d . 17e (please refer 2 ), lie flush against each other. Between recording devices 21 adjacent battery compartments 17a . 17b . 17c . 17d . 17e are connecting bridges 24 arranged to ensure that between the receiving devices 21 adjacent battery compartments 17a . 17b . 17c . 17d . 17e the z. In 1 illustrated partitions 15 can run.

In 6 is a housing 1 with inserted battery cells 11 shown. Next is a cover-side holding device 20 shown. In 6 it can be seen that foot-side end portions of the battery cells 11 from the in 5 shown and designed as a holding cylinder receiving devices 21 be enclosed. Not shown head end portions of the battery cells 11 are in this case, ie in the inserted state, in the in 1 illustrated bottom side receiving devices 6 arranged. In such a state, relative movements of the battery cells 11 concerning the wall sides 4 prevented. In 6 shown is that minus poles 25 the battery cells 11 Cover side are arranged, which inevitably positive poles of the battery cells 11 are arranged on the bottom side. Thus, a foot-side end portion or shell portion of battery cells 11 a minus pole end portion of these battery cells 11 and a head-side end portion or shell portion of the battery cells 11 a positive pole end portion of the battery cells 11 ,

In 7 is a housing 1 with inserted battery cells 11 (please refer 6 ) and used minus pole side contacting plates 19a . 19b . 19c that also in 8a . 8b . 8c are shown represented. Here is a first minus pole side contacting plate 19a a first battery chamber 17a assigned. Second negative terminal side contacting plates 19b are each a second, a third and a fourth battery chamber 17b . 17c . 17d assigned. A third negative pole-side contacting plate 19c is a fifth battery chamber 17e assigned. For this are external dimensions of minus pole side contacting plates 19a . 19b . 19c to a shape of the respective battery chambers 17a . 17b . 17c . 17d . 17e customized. Here are the minus pole side contacting plates 19a . 19b . 19c on the lid side on the in 6 illustrated battery cells 11 and on the lid-side holding device 20 hung up. Regarding the case 1 are the negative pole side contacting plates 19a . 19b . 19c So over the lid-side holding device 20 arranged.

In 8a is a first negative pole-side contacting plate 19a shown. This is how in 7 seen, a first battery chamber 17a assigned. The first negative pole side contacting plate 19a has analogous to that in 3a shown first positive pole side contacting plate 75 Bonding sections 18 on. By means of the first negative terminal side contacting plate 19a are negative poles 25 (please refer 6 ) all in the first battery chamber 17a arranged battery cells 11 simultaneously contactable, wherein in the first battery chamber 17a arranged battery cells 11 are electrically connected in parallel. Also the negative pole side contacting plates 19a . 19b . 19c have circular holes 26 on, the escape of flames and / or solid particles as well as the accessibility of the minus poles 25 for electrical contacting of negative poles 25 serve.

8b shows a second negative pole side contacting plate 19c and 8c a third negative terminal side contacting plate 19b , These are analogous to the first in 8a shown first minus pole side contacting plate 19a Bonding sections 18 and holes 26 on. The first and second negative pole-side contacting plate 19a . 19b each has a contact section 27a . 27b on.

How out 7 can be seen, for. B. the first minus pole side contacting plate 19a by means of the contact section 27a with a free end of a contact tongue 8b a second positive pole-side contacting plate 7b and the second negative terminal side contacting plates 19b by means of their contact sections 27b each with free ends of contact tongues 8b . 8c of second and third positive pole-side contacting plate 7b . 7c contacted. From the synopsis of 2 and 7 it follows that, thus, the battery cells connected in parallel electrically 11 the first battery chamber 17a in series with the battery cells, which in turn are electrically connected in parallel 11 the second battery chamber 17b are switched.

In 9 is a housing 1 with a first cover plate arranged on the bottom side 28 shown. Regarding the case 1 is the first cover plate 28 below the positive pole side contacting plates 7a . 7b . 7c arranged. In the range of positive poles of in the case 1 arranged battery cells 11 (please refer 6 ) has the first cover plate 28 Predetermined breaking points 29 or bursting, with exemplarily only one predetermined breaking point 29 is designated. In the area of the predetermined breaking point 29 is the first cover plate 28 perforated. Occur in a defect z. B. flames and / or solid particles from the positive pole of a battery cell 11 off, so will the first cover plate 28 in the area of the predetermined breaking point 29 break open and thus allow a directed escape of the flames and / or solid particles.

In 10 is a perspective view of a housing 1 with another cover plate 13 represented, wherein the further cover plate 13 is arranged on the bottom side. Regarding the case 1 is the other cover plate 13 below the first cover plate 28 (please refer 9 ) arranged. The first cover plate 13 indicates edges or corners of the cover plate 13 holes 30 on, in an attached state of the other cover plate 13 on the case 1 with holes in the housing 1 aligned. By means of the holes 30 is the other cover plate 13 on the case 1 screwed. The further cover plate 13 is made of refractory material and has a predetermined temperature resistance.

Cover side, a pressure plate, not shown by means of in 1 holes shown 12 on the case 1 be screwed on. When screwed on, the pressure plate generates a contact force that is applied via the pressure plate, the minus pole side contacting plates 19a . 19b . 19c (please refer 7 ) on the in the case 1 arranged battery cells 11 (please refer 6 ) is exercised. Thus, there is also a relative movement towards a lid side 2 or a bottom side 3 the battery cells 11 prevented. The contact force presses this particular in 12 illustrated spring tongues 36 from bottom-side receiving devices 6 from a starting position of these spring tongues.

In 11 is a cross section through the in 10 illustrated housing shown. Here it is shown that between a further cover plate 13 and a first cover plate 28 an air duct 31 from the other cover plate 13 is trained. In this air duct 31 can in a defect case a flame and / or solid particles of a battery cell 11 from a positive pole of the battery cell 11 emerge through the first cover plate 28 , in particular in the area of a predetermined breaking point 29 (please refer 9 ) escape. Next is in 11 the cover-side holding device 20 and the bottom-side holding device 5 represented as well as the positive pole side contacting plates 7a . 7b . 7c and the minus pole side contacting plates 19a . 19b . 19c , Also shown is a cooling element 32 , which lid on the housing 1 is arranged. By the arrangement of the battery cells 11 in corresponding reception facilities 6 . 21 the bottom-side and cover-side holding devices 5 . 20 that results in a free space 33 between battery cells 11 is available. This clearance can, for example, for the flow of a cooling fluid between the battery cells 11 be used.

In 12 is a perspective view of a portion of a housing 1 shown, wherein the housing 1 only partially with battery cells 11 is equipped. In particular shows 12 the detailed design of the bottom-side holding device 5 , The bottom-side holding device 5 has several receiving devices 6 on. The recording devices 6 are hereby webs 34 limited, the circular portions of a surface of the bottom-side holding device 5 include. Here, the webs include 34 the circular sections of the surface of the bottom-side holding device 5 not completely. A diameter of the circular sections is equal to a diameter of the battery cells 11 or approximately equal to the diameter of the battery cells 11 , A first section 35a a first bridge 34 runs along a circumferential line of the circular section. Another section 35b of the footbridge 34 protrudes into the circular section. The further subsection 35b is here designed as a spring element. Is a battery cell 11 in the circular section, which forms part of the receiving device 6 training, used, so is the further subsection 35b pushed out of the circular portion and exerts a determinable due to a spring stiffness and the deflection spring force in a direction parallel to a surface of the bottom-side holding device 5 on the battery cell 11 out. The further subsection 35b exerts a radial spring force on the battery cell 11 and thus fixes them mechanically.

Also shown are spring tongues 36 , the freestanding in the surface of the bottom-side holding device 5 are arranged. This projecting a free end of the spring tongues 36 in an interior volume 16 (please refer 1 ) of the housing 1 into it. Will the battery cell 11 in the receiving device 6 the bottom-side holding device 5 inserted and from a cover side 2 force towards the bottom side 3 on the battery cell 11 exerted, for example, a contact force by screwing the other cover plate 13 with the housing 1 , so is a free end of the spring tongues 36 of the circular section 6 from the inner volume 16 pressed in the direction of an outer volume, not shown. Due to mechanical properties and the deflection exercises the spring tongue 36 then a spring force in the axial direction, that is perpendicular to a surface of the bottom-side holding device 5 , on the battery cell 11 out. It is further shown that a receiving device 6 the bottom-side holding device 5 a circular opening 37 having, wherein the circular opening 37 a smaller diameter than a battery cell 11 having. Thus, a minus pole side end of the battery cell 11 flat on the surface of the bottom-side holding device 5 in the field of reception equipment 6 placed.

In 13 is the in 12 shown section of the housing 1 illustrated, in particular a further embodiment of the cover-side holding device 20 is shown. Analogous to the bottom-side holding device 5 has the cover-side holding device 20 here, webs 38 on. The bridges 38 include a circular opening 39 the cover-side holding device 20 , where a first section 40a a footbridge 38 along a circumference of the circular opening 39 runs and another section 40b of the footbridge 38 in the circular opening 39 protrudes. A radius of the opening 39 is equal to or approximately equal to a radius of a battery cell 11 , If the cover-side holding device on the lid side of the housing 1 put on, so enclose or embrace the webs 38 a foot or positive pole end portion or shell portion of battery cells 11 , Analogous to the other sections 35b of the bridges 34 (please refer 12 ) become here the further subsections 40b from the battery cell 11 from the circular opening 39 pushed out and practice in the inserted state of the battery cells 11 a spring force parallel to a surface of the lid-side holding device 20 on the battery cells 11 out.

Here are the other sections 35b . 40b of the bridges 34 . 38 floating over the surface of the bottom-side and lid-side holding device 5 . 20 be formed.

LIST OF REFERENCE NUMBERS

1

casing

2

cover page

3

bottom side

4

Side wall

5

bottom-side holding device

6

recording device

7a

first positive pole side contacting plate

7b

second positive pole-side contacting plate

7c

third positive pole side contacting plate

8b

contact tongue

8c

contact tongue

9

terminals

10

temperature sensor

11

battery cell

12

Hole, threaded hole

13

additional cover plate

14

opening

15

partition wall

16

internal volume

17a

first battery chamber

17b

second battery chamber

17c

third battery chamber

17d

fourth battery chamber

17e

fifth battery chamber

18

Bonding junction

19a

first negative terminal side contacting plate

19b

second negative terminal side contacting plate

19c

third negative pole side contacting plate

20

Cover-side holding device

21

recording device

22

bearing surface

23

side web

24

connecting web

25

minuspol

26

opening

27a

Contact section

27b

Contact section

28

first cover plate

29

Breaking point

30

opening

31

air duct

32

cooling element

33

free space

34

web

35a

first section

35b

further subsection

36

spring tongue

37

opening

38

web

39

opening

40a

first section

40b

further subsection

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

• WO 2008/074034 A1 [0004]

Claims (12)

Battery pack, wherein the battery pack comprises a plurality of battery cells ( 11 ) and an arrangement for holding a plurality of battery cells ( 11 ), at least one device for electrically contacting at least one positive pole of at least one battery cell ( 11 ) and at least one device for electrically contacting at least one negative pole ( 25 ) of the at least one battery cell ( 11 ), wherein the arrangement for holding at least one housing ( 1 ), at least one bottom-side holding device ( 5 ) and at least one lid-side holding device ( 20 ), wherein the bottom-side holding device ( 5 ) on a bottom side ( 3 ) of the housing ( 1 ) or a bottom side ( 3 ) of the housing ( 1 ), wherein the cover-side holding device ( 20 ) on a cover side ( 2 ) of the housing ( 1 ) is arranged or a cover side ( 2 ) of the housing ( 1 ), wherein the at least one device for electrically contacting a positive pole has at least one positive pole of a battery cell ( 11 ), wherein the at least one device for electrical contacting of a negative pole ( 25 ) at least one negative pole ( 25 ) of the battery cell ( 11 ), characterized in that the at least one device for electrical contacting of a positive pole or the at least one device for electrical contacting of a negative pole ( 25 ) in the bottom side ( 3 ) of the housing ( 1 ) is integrated. Battery pack according to claim 1, characterized in that the at least one device for electrical contacting of at least one negative pole ( 25 ) at least one battery cell ( 11 ) mechanically rigid with the at least one negative pole ( 25 ) of the at least one battery cell ( 11 ) and / or the at least one device for electrically contacting at least one positive pole of at least one battery cell ( 11 ) mechanically rigidly with the at least one positive pole of the at least one battery cell ( 11 ) connected is. Battery pack according to one of the preceding claims, characterized in that the bottom-side holding device ( 5 ) a plurality of receiving devices ( 6 ) for receiving battery cells ( 11 ) and the cover-side holding device ( 20 ) a plurality of receiving devices ( 21 ) for receiving battery cells ( 11 ), wherein the plurality of battery cells ( 11 ) in corresponding reception facilities ( 6 . 21 ) of the lid-side and bottom-side holding device ( 5 . 20 ) are arranged, wherein the receiving devices ( 6 . 21 ) of the cover-side and / or the bottom-side holding device ( 5 . 20 ) each have at least one spring element, which has a predetermined spring force on a in the respective receiving device ( 6 . 21 ) arranged battery cell ( 11 ) exercises. Battery pack according to claim 3, characterized in that the at least one spring element of the receiving devices ( 6 ) of the bottom-side holding device ( 5 ) and / or the at least one spring element of the receiving devices ( 21 ) of the cover-side holding device ( 20 ) an axial spring force on the in the receiving device ( 6 . 21 ) arranged battery cell ( 11 ) exercises. Battery pack according to one of claims 3 or 4, characterized in that the at least one spring element or a further spring element of the receiving devices ( 6 ) of the bottom-side holding device ( 5 ) and / or the at least one spring element or a further spring element of the receiving devices ( 21 ) of the cover-side holding device ( 20 ) a radial spring force on the in the receiving device ( 6 . 21 ) arranged battery cell ( 11 ) exercises. Battery pack according to one of claims 1 to 5, characterized in that the housing ( 1 ) at least one partition wall ( 15 ), wherein the at least one partition wall ( 15 ) an internal volume ( 16 ) of the housing ( 1 ) in at least two battery compartments ( 17a . 17b . 17c . 17d . 17e ). Battery pack according to one of claims 1 to 6, characterized in that the at least one device for electrically contacting a positive pole as a positive pole side contacting plate ( 7a . 7b . 7c ), wherein the positive pole-side contacting plate ( 7a . 7b . 7c ) on the lid side ( 2 ) or the bottom side ( 3 ) and positive poles of at least a first number of battery cells ( 11 ) with the positive pole-side contacting plate ( 7a . 7b . 7c ) are electrically connected, and / or the at least one device for electrically contacting a negative terminal ( 25 ) as a negative pole side Contacting plate ( 19a . 19b . 19c ) is formed, wherein the negative terminal side contacting plate ( 19a . 19b . 19c ) at the bottom side ( 3 ) or the lid side ( 2 ) and minus poles ( 25 ) at least one further number of battery cells ( 11 ) with the negative terminal side contacting plate ( 19a . 19b . 19c ) are electrically connected. Battery pack according to claim 7 , characterized in that the battery pack per battery chamber ( 17a . 17b . 17c . 17d . 17e ) a positive pole side and a negative pole side contacting plate ( 7a . 7b . 7c . 19a . 19b . 19c ), wherein each battery chamber ( 17a . 17b . 17c . 17d . 17e ) the positive pole side contacting plate ( 7a . 7b . 7c ) on the lid side ( 2 ) or the bottom side ( 3 ) of the battery chamber ( 17a . 17b . 17c . 17d . 17e Is arranged and positive poles of all in the battery chamber ( 17a . 17b . 17c . 17d . 17e ) arranged battery cells ( 11 ) with the positive pole-side contacting plate ( 7a . 7b . 7c ) are electrically connected and the negative pole side contacting plate ( 19a . 19b . 19c ) at the bottom side ( 3 ) or the lid side ( 2 ) of the battery chamber ( 17a . 17b . 17c . 17d . 17e ) and minus poles ( 25 ) all in the battery chamber ( 17a . 17b . 17c . 17d . 17e ) arranged battery cells ( 11 ) with the negative terminal side contacting plate ( 19a . 19b . 19c ) are electrically connected. Battery pack according to claim 8, characterized in that a positive pole-side contacting plate at least a first battery chamber ( 17a ) with a negative pole-side contacting plate of one of the first battery chamber ( 17a ) adjacent battery chamber ( 17b ) is electrically connected or a minus pole side contacting plate ( 19a ) at least the first battery chamber ( 17a ) with a positive pole side contacting plate ( 7b ) of the first battery chamber ( 17a ) adjacent battery chamber ( 17b ) is electrically connected. Battery pack according to one of claims 1 to 9, characterized in that the battery pack at least a first cover plate ( 28 ), wherein the first cover plate ( 28 ) is arranged on the lid side, if positive poles in the housing ( 1 ) arranged battery cells ( 11 ) towards a lid side ( 2 ) or the first cover plate ( 28 ) is arranged on the bottom side, if positive poles in the housing ( 1 ) arranged battery cells ( 11 ) to a bottom side ( 3 ), wherein the first cover plate ( 28 ) into the receiving devices ( 6 . 21 ) corresponding areas of predetermined breaking points ( 29 ) having. Battery pack according to one of claims 1 to 10, characterized in that the battery pack at least one further cover plate ( 13 ), wherein the further cover plate ( 13 ) is arranged on the lid side, if positive poles in the housing ( 1 ) arranged battery cells ( 11 ) towards a lid side ( 2 ) or the further cover plate ( 13 ) is arranged on the bottom side, if positive poles in the housing ( 1 ) arranged battery cells ( 11 ) to a bottom side ( 3 ), wherein the further cover plate ( 13 ) has a predetermined temperature resistance and / or refractoriness. Arrangement for holding a plurality of battery cells ( 11 ), wherein the arrangement at least one housing ( 1 ), at least one bottom-side holding device ( 5 ) and at least one lid-side holding device ( 20 ), wherein the bottom-side holding device ( 5 ) on a bottom side ( 3 ) of the housing ( 1 ) or a bottom side ( 3 ) of the housing ( 1 ), wherein the bottom-side holding device ( 5 ) a plurality of receiving devices ( 6 ) for receiving battery cells ( 11 ), wherein the cover-side holding device ( 20 ) on a cover side ( 2 ) of the housing ( 1 ) is arranged or a cover side ( 2 ) of the housing ( 1 ), wherein the cover-side holding device ( 20 ) a plurality of receiving devices ( 21 ) for receiving battery cells ( 11 ), wherein a plurality of battery tents ( 11 ) in corresponding reception facilities ( 6 . 21 ) of the lid-side and bottom-side holding device ( 5 . 20 ) can be arranged, characterized in that the receiving devices ( 6 . 21 ) of the cover-side and / or bottom-side holding device ( 5 . 20 ) each have at least one spring element, wherein by means of the spring element, a predetermined spring force on a in the respective receiving device ( 6 . 21 ) arranged battery cell ( 11 ) is exercisable.

Images