# US 2020/0400752 A1 · Method of assembling an energy storage system

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- Number: US 2020/0400752 A1
- Document ID: US20200400752A1
- Status: Published application
- Kind: A1
- Application number: 16/961,668
- Filed: 2019-01-14
- Published: 2020-12-24
- Earliest claimed: 2018-01-17
- Assignees: Siemens Aktiengesellschaft
- Applicants: Siemens Aktiengesellschaft
- Inventors: Eirik Børsheim
- Web page: https://patentgrep.com/patent/US20200400752A1

## CPC

- H01M 10/627: Stationary installations, e.g. power plant buffering or backup power supplies
- G01R 31/3865: {related to manufacture, e.g. testing after manufacture}
- G01R 31/50: Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections (testing of sparking plugs H01T13/58)
- H01M 10/482: {for several batteries or cells simultaneously or sequentially}
- H01M 10/613: Cooling or keeping cold
- H01M 10/6567: Liquids
- H01M 50/204: Racks, modules or packs for multiple batteries or multiple cells
- H01M 50/227: Organic material
- H01M 2220/10: Batteries in stationary systems, e.g. emergency power source in plant
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A method of assembling and electrically interconnecting an energy storage system, the system includes a cabinet and a plurality of energy storage modules which may be connected together in the cabinet, each energy storage module has a plurality of energy storage devices. The method includes carrying out an electrical interconnection step by providing a removable current monitoring device at one pole of a circuit of the cabinet during the electrical interconnection step; connecting a first module to the pole; monitoring current flow after connecting the first module and, if no current flow is detected, connecting a further module in series with the first module. The monitoring and connecting steps are repeated for each subsequent module until all modules of the cabinet have been electrically interconnected. The final module is connected to the other pole of the circuit and the current monitoring device is disconnected and removed from the circuit.

## Claims

### Claim 1

A method of assembling and electrically interconnecting an energy storage system, the system comprising a cabinet and a plurality of energy storage modules which may be connected together in the cabinet, each energy storage module comprising a plurality of energy storage devices; the method comprising:
carrying out an electrical interconnection step by providing a removable current monitoring device at one pole of a circuit of the cabinet during the electrical interconnection step;
connecting a first module to the pole;
monitoring current flow after connecting the first module;
when no current flow is detected, connecting a further module in series with the first module;
repeating the monitoring and connecting steps for each subsequent module until all modules of the cabinet have been electrically interconnected;
connecting a final module to the other pole of the circuit; and
disconnecting and removing the current monitoring device from the circuit.

### Claim 2 (depends on 1)

The method according to claim 1,
wherein, when current flow is detected, not connecting another module.

### Claim 3 (depends on 1)

The method according to claim 1,
wherein, when current flow is detected in the current monitoring device, determining whether a fault is in the module, or in another part of the circuit; removing the faulty module or part; installing a repaired, or replacement module or part, and repeating the current monitoring step.

### Claim 4 (depends on 1)

The method according to claim 1, further comprising:
connecting the fully installed cabinet to a power supply system.

### Claim 5 (depends on 1)

The method according to claim 1,
wherein the energy storage system comprises a plurality of cabinets, each installed before being connected to a power supply system.

### Claim 6 (depends on 1)

The method according to claim 1,
wherein each energy storage module comprises a plurality of energy storage devices electrically connected together in series to provide between 50V DC and 150 V DC.

### Claim 7 (depends on 1)

The method according to claim 1,
wherein each cabinet comprises a plurality of modules electrically connected together in series to provide at least 1000V DC.

### Claim 8 (depends on 1)

The method according to claim 1,
wherein each of the energy storage modules comprises a water-cooled polymer or thermoplastic housing.