High-temperature battery

• US 5,824,432 A
• Filed: 06/01/1995
• Issued: 10/20/1998
• Est. Priority Date: 06/01/1994
• Status: Expired due to Fees

• Current Assignee: DaimlerChrysler AG (Mercedes-Benz Group AG)
• Original Assignee: Mercedes-Benz AG (Mercedes-Benz Group AG)
• Inventors: Currle, Joachim
• Primary Examiner(s): Willis, Jr., Prince
• Assistant Examiner(s): CHANEY, CAROL DIANE
• Application Number:
  US08/456,405
• Time in Patent Office: 1,237 Days
• Field of Search: 429/120, 429/26, 429/62, 429/112, 429/71, 429/72
• US Class Current: 429/120
• CPC Class Codes: B60L 50/64 Constructional details of batteries specially adapted for electric vehicles
• CPC Class Codes: B60L 58/26 by cooling
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/652 characterised by gradients for achieving a desired temperature gradient H01M10/617
• CPC Class Codes: H01M 10/6557 arranged between the cells
• CPC Class Codes: H01M 10/6563 with forced flow, e.g. by blowers
• CPC Class Codes: H01M 10/6566 Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers H01M10/6565 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A high-temperature battery for the power supply of electrically powered vehicles is disclosed which has a thermally insulating housing and a cooling system with a cooling body which is arranged inside the thermally insulating housing. Air or other fluid coolant flows through the cooling body and is supplied through an insulating wall of the housing solely by means of coolant inlet and air outlet connecting elements arranged on the housing. The cooling body is formed by a parallel arrangement of plate-shaped cooling-body elements through which coolant flows and which are designed as hollow bodies. The bar-shaped battery cells are arranged in the space between the cooling-body elements. The coolant inlet and outlet are arranged at one side of the housing and are connected to inlet and outlet openings of the cooling-body elements so as to provide optimum cross-flow cooling power on the battery cells. Coolant in the form of air or oil can be used according to preferred embodiments.

Claims

1. High temperature battery for the power supply of electrically powered vehicles and the like, containing battery cells designed in the shape of a bar said battery including a thermally insulated housing and a cooling system including a cooling body inside said housing through which coolant flows, said cooling body comprising:

a plurality of parallelly arranged plate shaped cooling body elements in the form of hollow bodies through which coolant flows, said cooling body elements being spaced from one another to form battery accommodating spaces,

a coolant inlet connecting element at one side of the cooling body,

a coolant outlet connecting element at said one side of the cooling body,

at least one coolant inlet opening on a narrow side of each cooling body element which faces said one side of the cooling body,

at least one coolant outlet opening on said narrow side of each cooling body element which faces said one side of the cooling body,

an inlet funnel connecting the coolant inlet connecting element with the coolant inlet openings of the cooling body elements, said inlet funnel widening in a coolant flow downstream direction in a cooling body breadth direction, and

an outlet funnel connecting the coolant outlet connecting element with the coolant outlet openings of the cooling body elements, said outlet funnel narrowing in a coolant flow downstream direction in the cooling body breadth direction.

2. High-temperature battery according to claim 1, wherein the cooling body elements are disposed such that at least one long lateral face of each of battery cell designed in the shape of a bar is in thermal contact with a cooling-body element.

3. High-temperature battery according to claim 1, wherein the inlet funnel and the outlet funnel are formed perpendicularly to the cooling body breadth direction such that when the coolant flow passes through the funnels the respective instantaneously crossed cross-sectional area remains substantially unaltered.

4. High-temperature battery according to claim 1, wherein baffle plates are arranged inside each cooling-body element, which baffle plates distribute the coolant flowing in through one or more inlet openings inside the cooling-body element said baffle plates supporting diversion of the coolant flow to one or more outlet openings.

5. High-temperature battery according to claim 4, wherein the cross-sectional area crossed by the coolant at the inlet into a cooling-body element is smaller than the cross-sectional area crossed on the outlet from the cooling-body element.

6. High-temperature battery according to claim 5, wherein the baffle plates form a coolant duct which widens in the throughflow direction.

7. High-temperature battery according to claim 5, wherein on passage through the cooling-body element, the cross-sectional area instantaneously crossed in each case by the coolant flow monotonically increases.

8. High-temperature battery according to claim 6, wherein on passage through the cooling-body element, the cross-sectional area instantaneously crossed in each case by the coolant flow monotonically increases.

9. High-temperature battery according to claim 1, wherein each cooling-body element has an inlet opening arranged in a central position and two outwardly arranged outlet openings.

10. High temperature battery according to claim 5, wherein each cooling-body element has an inlet opening arranged in a central position and two outwardly arranged outlet openings.

11. High-temperature battery according to claim 1, wherein each cooling-body element has an outlet opening arranged in a central position and two outwardly arranged inlet openings.

12. High-temperature battery according to claim 5, wherein each cooling-body element has an outlet opening arranged in a central position and two outwardly arranged inlet openings.

13. High-temperature battery according to claim 1, wherein one of a coolant gas and a coolant liquid is used as the coolant.

14. High-temperature battery according to claim 13, wherein said coolant is air.

15. High-temperature battery according to claim 13, wherein said coolant is oil.