# US 2019/0173065 A1 · Prismatic-Pouch Hybrid Battery Module

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- Number: US 2019/0173065 A1
- Document ID: US20190173065A1
- Status: Published application
- Kind: A1
- Application number: 15/832,440
- Filed: 2017-12-05
- Published: 2019-06-06
- Earliest claimed: 2017-12-05
- Assignees: Robert Bosch GmbH
- Applicants: Robert Bosch Battery Systems, LLC
- Inventors: Christopher Millon
- Web page: https://patentgrep.com/patent/US20190173065A1

## CPC

- H01M 10/482: {for several batteries or cells simultaneously or sequentially}
- H01M 10/613: Cooling or keeping cold
- H01M 10/625: Vehicles
- H01M 10/6556: Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552)
- H01M 50/105: Pouches or flexible bags
- H01M 50/211: adapted for pouch cells
- H01M 50/22: of the casings or racks
- H01M 50/276: Inorganic material
- H01M 50/278: Organic material
- H01M 50/28: Composite material consisting of a mixture of organic and inorganic materials
- H01M 50/282: having a layered structure
- H01M 50/296: characterised by terminals of battery packs (terminals of batteries H01M50/543)
- H01M 10/48: Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569)
- H01M 10/647: Prismatic or flat cells, e.g. pouch cells
- H01M 10/6567: Liquids
- H01M 50/122: Composite material consisting of a mixture of organic and inorganic materials
- H01M 50/124: having a layered structure
- H01M 50/15: for prismatic or rectangular cells (H01M50/153 takes precedence)
- H01M 50/548: on opposite sides of the cell
- H01M 50/553: Terminals adapted for prismatic, pouch or rectangular cells
- H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A battery module incorporates features of both prismatic housings and metal foil laminate pouch housings, and is configured to receive and support electrochemical cells. The battery module housing includes a rigid tubular frame and flexible cover elements that are joined to the frame and close the open ends of the frame. The frame has an inner surface that faces the cells, an outer surface that is opposed to the inner surface, a first edge that joins the inner surface to the outer surface at one open end of the frame, and a second edge that joins the inner surface to the outer surface at the opposed open end of the frame. The first cover element overlies and closes the one open end of the frame and the second cover element overlies and closes the other open end of the frame.

## Claims

### Claim 1

A battery module, comprising
electrochemical cells arranged in a cell stack, each cell comprising a positive electrode, a negative electrode and a separator, where the separator is sandwiched between the positive electrode the negative electrode and prevents physical contact between the positive electrode and the negative electrode,
a rigid frame that surrounds a circumference of the cell stack, the frame having an inner surface that faces the cell stack, an outer surface that is opposed to the inner surface, a first edge that joins the inner surface to the outer surface at one end of the cell stack, and a second edge that joins the inner surface to the outer surface at an other end of the cell stack,
a first cover element formed of a metal foil laminate material, the first cover element overlying the one end of the cell stack and a peripheral edge of the first cover element being joined to the frame along the entirety of the peripheral edge of the first cover element, and
a second cover element formed of a metal foil laminate material, the second cover element overlying the other end of the cell stack, a peripheral edge of the second cover element being joined to the frame along the entirety of the peripheral edge of the second cover element,
wherein the first cover element, the second cover element and the frame cooperate to form a module housing that contains the cell stack.

### Claim 2 (depends on 1)

The battery module of claim 1, wherein
the first cover element is sealed to the frame along the entirety of the peripheral edge of the first cover element, and
the second cover element is sealed to the frame along the entirety of the peripheral edge of the second cover element,
whereby the first cover element, the second cover element and the frame cooperate to form a sealed module housing that contains the cell stack.

### Claim 3 (depends on 2)

The battery module of claim 2, wherein an interior space of the module housing is at a pressure that is less than atmospheric pressure.

### Claim 4 (depends on 1)

The battery module of claim 1, wherein the frame comprises at least one port that is configured to permit fluid flow through the frame when the port is in an open configuration, and that is configured to prevent fluid flow through the frame when the port is in a closed configuration.

### Claim 5 (depends on 1)

The battery module of claim 1, wherein the frame comprises at least one sensor that is configured to detect an operating property of at least one cell of the cell stack.

### Claim 6 (depends on 1)

The battery module of claim 1, wherein the frame comprises an electrically conductive terminal, the terminal including a first end that protrudes inward from the inner surface of the frame and is in electrical contact with one of the positive electrode and the negative electrode of at least one cell, the terminal including a second end that protrudes outward from the outer surface of the frame.

### Claim 7 (depends on 1)

The battery module of claim 1, wherein
the first cover element is joined to the first edge along the entirety of the peripheral edge of the first cover element, and
the second cover element is joined to the second edge along the entirety of the peripheral edge of the second cover element.

### Claim 8 (depends on 1)

The battery module of claim 1, wherein the frame comprises integral mounting features that are configured to allow the frame to be secured to a support structure.

### Claim 9 (depends on 1)

The battery module of claim 1, wherein the frame comprises
a terminal opening configured to permit pass through of a terminal that is electrically connected to at least one cell, and
a seal disposed in the terminal opening configured to prevent fluid flow between the terminal and the terminal opening.

### Claim 10 (depends on 1)

The battery module of claim 1, wherein the frame comprises a cooling channel that extends between a first cooling channel opening and a second cooling channel opening, the cooling channel defining a fluid flow pathway within the frame.

### Claim 11

A battery module that includes a battery module housing configured to receive and support an array of electrochemical cells, the battery module housing including
a rigid frame that surrounds a circumference of the cell array, the frame having an inner surface that faces the cell array, an outer surface that is opposed to the inner surface, a first edge that joins the inner surface to the outer surface at one end of the cell array, and a second edge that joins the inner surface to the outer surface at an other end of the cell array,
a first cover element formed of a metal foil laminate material, the first cover element overlying the one end of the cell array and a peripheral edge of the first cover element being joined to the frame along the entirety of the peripheral edge of the first cover element, and
a second cover element formed of a metal foil laminate material, the second cover element overlying the other end of the cell array, a peripheral edge of the second cover element being joined to the frame along the entirety of the peripheral edge of the second cover element,
wherein the first cover element, the second cover element and the frame cooperate to form a module housing that contains the electrochemical cells.