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DE-102008054943-B4 - Battery arrangement

DE102008054943B4DE 102008054943 B4DE102008054943 B4DE 102008054943B4DE-102008054943-B4

Abstract

Battery arrangement (10) comprising several battery elements (15), each comprising at least one cuboid-shaped battery cell (16) arranged one behind the other to form a battery string (11), and at least one heat transfer device (20) for heating and/or cooling the battery arrangement (10), wherein each of the battery elements (15) has at least two cuboid-shaped battery cells (16) arranged side by side, wherein the heat transfer device (20) forms a battery base (21) supporting the battery cells (16), characterized in that a heat transport element (25) completely surrounds the battery arrangement (10) as a cladding surface.

Inventors

  • Stefan Butzmann

Assignees

  • ROBERT BOSCH GMBH

Dates

Publication Date
20260513
Application Date
20081219

Claims (9)

  1. Battery arrangement (10) comprising several battery elements (15), each having at least one cuboid-shaped battery cell (16) arranged in series to form a battery string (11), and at least one heat transfer device (20) for heating and/or cooling the battery arrangement (10), wherein each of the battery elements (15) has at least two cuboid-shaped battery cells (16) arranged next to each other, wherein the heat transfer device (20) forms a battery base (21) supporting the battery cells (16), characterized in that a heat transfer element (25) completely surrounds the battery arrangement (10) as a cladding surface.
  2. Battery arrangement (10) according Claim 1 , characterized in that a heat transfer element (25) is provided between two battery elements (15) arranged one behind the other in order to enable heat transfer between the battery elements (15) and the heat transfer device (20).
  3. Battery arrangement (10) according Claim 1 or 2 , characterized in that a battery cell (16) has a positive terminal contact (17) and a negative terminal contact (18), wherein two battery cells (16) are interconnected within the battery arrangement (10) such that the contact terminals (17, 18) with the most negative and the most positive potential are on the same side of the battery arrangement (10).
  4. Battery arrangement (10) according to one of the Claims 1 until 3 , characterized in that two battery strings (11) arranged side by side form a battery module (12, 13).
  5. Battery arrangement (10) according Claim 4 , characterized in that the battery module (12, 13) has an even number of battery cells (16).
  6. Battery arrangement (10) according Claim 4 or 5 , characterized in that the battery cells (16) within the battery arrangement (10) are arranged at an angle α to the arrangement of the individual battery modules (12, 13) to each other, wherein α comprises a range of 85° ≤ α ≤ 95°.
  7. Battery arrangement (10) according to one of the preceding claims, characterized in that - at least in one area - an electrically insulating heat transport element is arranged between the at least one battery cell (16) and the at least one heat transport element (25).
  8. Battery arrangement (10) according to one of the preceding claims, characterized in that the heat transfer device (20) has a temperature control element with temperature control fins.
  9. Battery arrangement (10) according to one of the preceding claims, characterized in that the battery arrangement (10) is a battery arrangement (10) for a hybrid vehicle and/or an electric vehicle and/or for a wind turbine.

Description

The invention relates to a battery arrangement according to the preamble of claim 1 with several battery elements, each comprising at least one battery cell and arranged in series to form a battery string, and at least one heat transfer device for heating and/or cooling the battery arrangement. State of the art Such a battery arrangement is known and increasingly used in vehicles and stationary applications, such as wind turbines. The battery arrangement consists of individual cells, the battery cells, which deliver a voltage characteristic of the cell's material combination. To build a battery arrangement capable of delivering the required power and energy output, the individual battery cells are electrically connected in series and/or parallel. A battery arrangement comprises several electrically interconnected battery cells, with a battery element being a single battery cell. A heat transfer element is typically located between the individual battery elements, enabling internal heat transfer between the battery elements and a heat transfer unit. The heat transfer unit is a device associated with the battery arrangement as a whole for supplying heat to the battery elements and/or dissipating heat from the battery elements. High reliability requirements are placed on the individual battery elements both when using battery arrangements in stationary applications, such as wind turbines, and when using them in vehicles, such as hybrid and/or electric vehicles. The state of the art in this regard includes, in particular, printed materials. DE 100 03 247 B4 , DE 199 30 399 A1 , WO 2008/ 034 584 A1 , WO 2007/ 068 223 A1 , US 2004 / 0 058 233 A1 as well as US 2008 / 0 292 948 A1 Furthermore, the printed text also forms US 5 639 571 A This includes the state of the art, which discloses a battery arrangement. Disclosure of the invention The battery arrangement according to the invention comprises several battery elements, each having at least one battery cell, arranged in series to form a battery string, and at least one heat transfer device for heating and/or cooling the battery arrangement, wherein each battery element has at least two battery cells arranged side by side. The battery arrangement is advantageously an electrical energy storage device (accumulator) that can be charged and discharged electrically over many cycles and comprises individual galvanic cells, the battery cells, which deliver a voltage characteristic of the material combination used in the respective cell. A battery element of the battery arrangement comprises at least one single battery cell, the single battery cell being the smallest unit of the battery arrangement. A battery element preferably has two battery cells arranged side by side. To achieve the required power and energy capacity of the battery arrangement, the individual battery cells are electrically connected in series and/or parallel. The side-by-side arrangement of the battery cells makes it possible to ensure appropriate temperature control of several adjacent battery cells with only one heat transfer device, thus enabling a compact and efficient design of the battery arrangement. Preferably, a heat transfer element is provided between each pair of battery elements arranged in series to enable heat transfer between the battery elements and the heat transfer device. Advantageously, each battery cell can have a positive terminal and a negative terminal, with each pair of battery cells being interconnected within the battery arrangement such that the terminals with the most negative and most positive potentials are located on the same side of the battery arrangement, thus allowing for wiring of the battery arrangement with minimal material usage. According to the invention, the heat transfer element can essentially completely surround the battery arrangement as a cladding surface. This allows the battery elements, arranged side by side and in series, to be clamped by the heat transfer elements in such a way that the thermal contact resistance between the heat transfer element and the battery element is low. The heat transfer element or elements enable internal heat transfer within the battery between the battery element(s) and the heat transfer device, wherein the heat transfer device is a device associated with the battery as a whole for supplying heat to the battery and/or for removing heat from the battery. According to a preferred embodiment of the invention, two battery strings arranged side by side form a battery module, wherein advantageously each battery module can have an even number of battery cells, which in turn are arranged within a battery arrangement essentially at an angle α to the arrangement of the individual battery modules to each other. They can be arranged, where α can encompass a range of 85° ≤ α ≤ 95°, but is preferably close to 90°. If two battery strings arranged side by side form a battery module, it is possible to remove, repair, and/or replace indiv