Retaining device for battery cells and vehicle

Abstract

The invention relates to a holding device for battery cells for the construction of high-voltage storage modules which can be used for electric motor vehicles, comprising an insulation plate (3) which is provided with a recess pattern for each battery cell (1), which recess pattern has not only a plurality of positioning points (5) for the battery cell, but also a plurality of flow channels (4) for the introduction of an electrically insulating adhesive substance (6), which flow channels are each formed as a recess ridge, each flow channel being configured such that it allows the complete filling of the cavity between the surface of the battery cell resting on the positioning points and the cooling plate (2) with the adhesive substance and allows at least partial realization of the side view of the positioning points in the vertical direction. The invention also relates to a vehicle having a high-voltage storage with a holding device for battery cells.

Description

Technical Field

[0001] The present invention relates to a holding device for battery cells, which are assembled in multiples into a battery module of a high-voltage memory, particularly for electric vehicles or hybrid vehicles. Background Technology

[0002] To provide electrical energy, storage batteries, also known as batteries or accumulators, are known. To power the electric drive system of a vehicle, a relatively high voltage, such as 400V, is required, and the storage batteries used for this purpose are also called high-voltage storage batteries or power batteries. These high-voltage storage batteries are now generally not constructed as a single unit, but rather modularly composed of multiple battery cells. This increases design flexibility and allows for the use of relatively inexpensive standard cells, which can be manufactured in large quantities, replacing specific custom designs. The number of battery cells used is directly related to the driving range of an electric or hybrid vehicle. In practice, battery cells used for high-voltage storage batteries are, for example, circular or prismatic cells.

[0003] Furthermore, high-voltage storage devices are often installed in the passenger compartment or luggage compartment of a vehicle, which unfavorably occupies space. Therefore, there is a need to find a solution for installing high-voltage storage devices that minimizes restrictions on passenger comfort and loading space. Thus, efforts are made to utilize such space as much as possible for installing battery cells, spaces that otherwise have no other use, and to achieve a high packing density of battery cells in this context. Such a holding device is known, for example, from DE102016206463A1, which is particularly constructed of a plastic bracket for insertion into the gaps between battery cells. Summary of the Invention

[0004] The object of the present invention is to realize a holding device for a single battery cell that reduces cost and structural space requirements.

[0005] This invention relates to a holding device for a battery cell used to form a high-voltage storage module for use in an electric motor vehicle. The holding device includes an insulating plate having a recessed pattern for each battery cell. The recessed pattern has not only multiple positioning supports for the battery cell, but also multiple flow slots for introducing an electrically insulating adhesive. Each flow slot is configured as a recessed protrusion, and each flow slot is constructed such that the cavity between the surface of the battery cell abutting the positioning support and the cooling plate is completely filled with the adhesive and the support is at least partially visible in the vertical direction when viewed from the side.

[0006] The present invention also relates to a vehicle having a high-voltage memory having a holding device for battery cells.

[0007] This invention is based on the following considerations:

[0008] Most known holders for individual battery cells have costly plug-in mechanisms. When constructing modules comprising multiple battery cells, cooling plates are used to prevent these cells from overheating. Here, the battery cells and the cooling plates must be electrically insulated.

[0009] According to the present invention, initially, an electrically insulating adhesive and a specially constructed insulating plate should be used as a "support," while ensuring reliable positioning, particularly reliable positioning relative to the vertical axis. Furthermore, during the manufacturing process, the maximum possible adhesive force needs to be established between the battery cell and the cooling plate. The adhesive flow needs to be uniform and bubble-free. Not only should the mechanical connections be strong, but heat dissipation should also be optimized.

[0010] Therefore, the retaining device according to the invention mainly comprises an insulating plate having a recessed pattern for each battery cell, wherein the recessed pattern has not only multiple positioning supports for the battery cell, but also multiple flow slots for introducing adhesive. The positioning supports prevent contact between the battery cell and the cooling plate, and thus serve as electrical insulation. Each flow slot is configured such that it allows the cavity between the surface of the battery cell abutting the positioning support and the cooling plate to be completely filled with an electrically insulating adhesive, and each flow slot also allows at least partially viewing of the support on the side in a vertical direction. Application in circular battery cells is particularly advantageous, but not limited thereto. Attached Figure Description

[0011] The present invention will now be described with reference to the accompanying drawings and preferred embodiments. The descriptions in the drawings should be understood as merely illustrative. The drawings are as follows:

[0012] Figure 1 It is a top view of the overall arrangement structure of the battery cells according to the present invention, which has the battery cells being held in place;

[0013] Figure 2 It is a section line passing through the vertical axis (z-axis) at a 120° angle (section line AA). Figure 1 A cross-sectional view; and

[0014] Figure 3 This is a top view of the recessed pattern according to the invention in the insulating plate without individual battery cells. Detailed Implementation

[0015] Figure 1 The image shows a battery cell 1 located in an insulating plate 3 (partially) with a recessed pattern. Figure 1In the middle, viewed from above, only the adhesive material 6 (6) is visible. Figure 2 ) flow seam 4.

[0016] Figure 2 Shown as observed in section AA Figure 1 The battery cell 1 is placed on the positioning fulcrum 5 of the insulating pad 3, and is therefore spaced apart from the cooling plate 2 disposed below the insulating pad 3. The positioning fulcrum 5 is thus configured to prevent contact between the battery cell 1 and the cooling plate 2.

[0017] In addition, Figure 2 The flow slot 4 is visible in the image. This flow slot is constructed such that it ensures that the cavity between the battery cell 1, which is attached to the positioning fulcrum 5, and the cooling plate 2 is completely filled with the adhesive material 6. The adhesive material should be electrically insulating.

[0018] Figure 3 Show all positioning pivots 5 (3 in the case of a circular monolithic shape) and all flow slots 4 (6 in the case of a circular monolithic shape).

[0019] Each flow slit 4 is configured as a uniformly distributed concave protrusion, which preferably enables the discharge of the adhesive material 6, which provides lateral support.

[0020] Each positioning fulcrum 5 is integrally formed in the insulating plate 3 as a recessed part that is evenly distributed in the form of a spacing device.

[0021] The number of flow slots 4 is preferably twice the number of positioning fulcrums 5. Each positioning fulcrum 5 can be directly adjacent to every two flow slots 4.

Claims

1. A holding device for a battery cell, the battery cell being used to form a high-voltage storage module usable in an electric motor vehicle, the holding device comprising an insulating plate (3) having a recessed pattern for each battery cell (1), the recessed pattern having not only a plurality of positioning fulcrums (5) for the battery cell (1), but also a plurality of flow slots (4) for introducing an adhesive material (6), the flow slots (4) being configured as recessed protrusions, each flow slot (4) being configured such that each flow slot allows the adhesive material (6) to completely fill the cavity between the surface of the battery cell abutting the positioning fulcrum (5) and the cooling plate (2) and allows at least partially vertical observation of the fulcrum located on the side.

2. The holding device according to claim 1, characterized in that, The positioning fulcrum (5) is configured to prevent contact between the battery cell (1) and the cooling plate (2).

3. The holding device according to claim 1 or 2, characterized in that, The flow slot (4) is configured as a uniformly distributed concave protrusion.

4. The holding device according to claim 1 or 2, characterized in that, The positioning fulcrum (5) is configured in the insulating plate (3) as a uniformly distributed recessed portion in the form of a spacer.

5. The holding device according to claim 1 or 2, characterized in that, The number of flow slots (4) is many times the number of positioning fulcrums (5).

6. The holding device according to claim 1 or 2, characterized in that, The positioning fulcrum (5) and the flow slot (4) are alternately arranged in the concave pattern in the same number.

7. The holding device according to claim 1 or 2, characterized in that, Each positioning pivot (5) is directly adjacent to a flow slot (4).

8. The holding device according to claim 1 or 2, characterized in that, The adhesive material (6) is introduced in excess via the flow seam (4) to aid in lateral support.

9. A vehicle having a high-voltage memory having a holding device for a battery cell according to any one of claims 1 to 8.

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