Vehicular power source device

• US 20070238015A1
• Filed: 04/03/2007
• Published: 10/11/2007
• Est. Priority Date: 04/05/2006
• Status: Abandoned Application

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Oya, Satoyoshi, Takedomi, Harumi, Sakai, Hideaki, Kubota, Shinya
• Application Number:
  US11/730,738
• Publication Number:
  US 20070238015A1
• Time in Patent Office: Days
• US Class Current: 429/120
• CPC Class Codes: B60L 2240/545 Temperature
• 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 10/4207 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/617 for achieving uniformity or desired distribution of temperature
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/643 Cylindrical 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 vehicle power source includes a number of battery modules in a first layer on one end side in a battery module laminating direction which is smaller than the number of battery modules in a fourth layer on an other end side. A cooling-air supply port is opened over the entire region in the laminating direction of the battery modules, an air-introduction guide is provided on the downstream side in the cooling-air flow direction, and a coolant discharge port is opened at a position closer to the fourth layer side. A flow from the first layer side to the fourth layer side is formed on the downstream side in the cooling-air flow direction so as to efficiently cool the battery modules difficult to be cooled.

Claims

1. A vehicular power source device, comprising:

a battery box including a coolant supply port and a coolant discharge port;

cylindrical battery modules juxtaposed in a plurality of laminated planes,

wherein a coolant flows in a direction orthogonal to a longitudinal direction of said battery modules, from said coolant supply port to said coolant discharge port, so as to cool said battery modules;

wherein a number of said battery modules in a layer on one end side in a battery module laminating direction is smaller than a number of said battery modules in a layer on an other end side in the battery module laminating direction; and

further wherein said coolant supply port is opened over an entire region in the battery module laminating direction, and said coolant discharge port is opened at a position closer to the other end side in the battery module laminating direction.

2. The vehicular power source device according to claim 1, wherein a wall surface on the one end side in the battery module laminating direction in said battery box is inclined so that a downstream side in a coolant flowing direction nears the other end side in the laminating direction.

3. The vehicular power source device according to claim 1, wherein a recess is formed in a floor panel of a trunk room, and said battery box with the one end side in the battery module laminating direction oriented downward is stored in said recess.

4. The vehicular power source device according to claim 2, wherein a recess is formed in a floor panel of a trunk room, and said battery box with the one end side in the battery module laminating direction oriented downward is stored in said recess.

5. A vehicular power source device, comprising:

a battery box including a coolant supply port and a coolant discharge port; and

a plurality of substantially parallel battery modules are stored in said battery box,

wherein a coolant flows in a direction orthogonal to a longitudinal direction of said battery modules, from said coolant supply port to said coolant discharge port, so as to cool said battery modules;

wherein said coolant discharge port is displaced in a direction orthogonal to a coolant flow direction with respect to said coolant supply port; and

wherein said power source device further comprises;

a first partition wall extending along the coolant flow direction for partitioning an interior of the battery box in the direction orthogonal to the coolant flow direction;

a first coolant passage defined in the battery box and displaced in the direction of displacement of the coolant discharge port with respect to the first partition wall;

a second coolant passage defined in said battery box and displaced in a direction opposite from the direction of displacement of said coolant discharge port with respect to said first partition wall;

a second partition wall partitioning a portion from said coolant discharge port to a downstream end of said first partition wall, and

a negative pressure source for introducing the coolant to said coolant supply port by generating a negative pressure in said coolant discharge port.

6. The vehicular power source device according to claim 5, wherein said first partition wall comprises a support member supporting said battery modules in said battery box.

7. The vehicular power source device according to claim 5, wherein the position of said coolant supply port is displaced to a side opposite from the direction of displacement of the coolant discharge port with respect to a center in the longitudinal direction of said battery modules.

8. The vehicular power source device according to claim 6, wherein the position of said coolant supply port is displaced to a side opposite from the direction of displacement of the coolant discharge port with respect to a center in the longitudinal direction of said battery modules.