Temperature-control device for a battery system

Abstract

The invention relates to a temperature-control device (1) for a battery system, at least comprising a cuboid-shaped hollow body (2) with at least one connection device (3) for supplying and at least one connection device (4) for discharging a separately temperature-controlled fluid, a plurality of regularly arranged and identically formed openings (7) extending from a first body surface (5) to a second body surface (6), wherein a cylindrical battery cell (8) is accommodated by each opening (7), so that a fluid-tight liquid space is formed, which is characterized in that the hollow body (2), excluding the cell head (11) and the cell bottom (12), extends over a height h of >20 to <100% of the total height H of the battery system.

Claims

1. A temperature control device for a battery system, said temperature-control device comprising: a cuboid-shaped hollow body having a liquid space therein with at least one connection device configured to supply a separately temperature-controlled fluid to the liquid space and at least one connection device configured to discharge the separately temperature-controlled fluid, the body having therein a plurality of regularly arranged and identically formed openings extending from a first body surface to a second body surface, wherein each opening accommodates therein a respective cylindrical battery cell in a fluid-tight connection so that the fluid space in the hollow body is fluid-tight, and wherein the hollow body, excluding the cell head and the cell bottom, extends over a height h of >20 to <100% of the total height H of the battery system.

2. A temperature control device for battery cells according to claim 1, wherein each opening has a sealing element that encloses the cylindrical battery cells.

3. A temperature control device for battery cells according to claim 1, wherein the cuboid-shaped hollow body is integrally made from plastic.

4. A temperature control device for battery cells according to claim 1, wherein the openings (are arranged in a densest circular packing form.

5. A temperature control device for battery cells according to claim 1, wherein the individual battery cells are spaced apart from each other.

6. A temperature control device for battery cells according to claim 1, wherein the separately temperature-controlled fluid is pumped in circulation via a heating and/or cooling device.

7. A temperature control device for battery cells claim 1, wherein the fluid is conductive.

8. A temperature control device for battery cells according to claim 1, wherein the cuboid-shaped hollow body is integrally made from POM.

9. A battery pack with temperature-control devices connected in series according to claim 1, wherein the separately temperature-controlled fluid is guided in circulation via temperature-control devices, at least one pumping device, and a heating and/or cooling device.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The drawings show as follows:

(2) FIG. 1 a temperature-control device for a battery system,

(3) FIG. 2 a sealing plate,

(4) FIG. 3 a cuboid-shaped hollow body viewed from the side and from above and

(5) FIG. 4 a battery pack comprising three temperature-control devices.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(6) FIG. 1 shows a temperature-control device (1) for a battery system having a cuboid-shaped hollow body (2) with at least one connection device (3) for supplying and at least one connection device (4, see FIG. 4) for discharging a separately temperature-controlled fluid. Cylindrical battery cells (8) are arranged in a plurality of regularly arranged and identically formed openings (7) extending from a first body surface (5) to a second body surface (6, FIG. 3A). The openings (7) or the battery cells (8) are arranged in the form of a densest circle packing.

(7) FIG. 2 shows a sealing plate (9) made of an elastomeric, preferably thermoplastic, synthetic material, comprising a plurality of regularly spaced and identically formed openings (7). In order to ensure a fluid-tight liquid space, the sealing plate (9), preferably by means of 2K technique, is applied to the surfaces (5, 6) of the cuboid-shaped hollow body (2).

(8) FIG. 3 shows the cuboid-shaped hollow body (2) from the side in a sectional view (3A) and from above (3B), also in a sectional view. Three staggered rows are shown, each with seven openings (7). In each opening (7), a cylindrical battery cell (8) is accommodated in the assembled state, such that each cell has a minimum distance (S) to the neighboring cell. This distance (S) and the arrangement as the densest circular packing ensure that the separately temperature-controlled fluid can flow around each individual battery cell. The fluid is supplied via the connection device (3) to the cuboid-shaped hollow body (2), and leaves it on its underside via the connection device (9).

(9) FIG. 4 shows three temperature-control devices (1, 1, 1) connected in series as part of a battery pack, wherein the black line (10) represents the path of the fluid. Via the connection device (3), the fluid flows into the first temperature-control device (1) in order to leave it again via the connection device (9). Subsequently, the fluid flows via the connection device (3) into the second temperature-control device (1), flows through it and leaves it again via the connection device (9). This continues for the third and, if appropriate, the following temperature-control device. The hollow body (2) extends over a height h, which is smaller than the total height H of the battery system. The sensitive regions of the battery system, in particular the cell head (11) and the cell bottom (12), are excluded from the temperature-control device (1) according to the invention.