DE102020112169A1 - System for detecting damage to high-voltage battery modules - Google Patents
System for detecting damage to high-voltage battery modules Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0007—Measures or means for preventing or attenuating collisions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/66—Arrangements of batteries
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
- B60K2001/0438—Arrangement under the floor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2306/00—Other features of vehicle sub-units
- B60Y2306/15—Failure diagnostics
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
Die Erfindung betrifft ein System (10) zur Erkennung von Beschädigungen von Hochvolt-Batteriemodulen (19) für ein Elektrofahrzeug (20) mit wenigstens einer Batteriewanne (12), in der wenigstens ein Hochvolt-Batteriemodul (19) angeordnet ist;wenigstens einem Körperschallsensor (15), der dazu eingerichtet ist,Körperschall (KS) der Batteriewanne (12) zu erfassen und entsprechende Körperschall-Messdaten (KSM) zu erzeugen; undwenigstens einem Auswertesystem (22), das dazu eingerichtet ist, die Körperschall-Messdaten (KSM) von dem Körperschallsensor (15) zu empfangen. Dabei ist vorgesehen, dass das Auswertesystem (22) ferner dazu eingerichtet ist, in Abhängigkeit von den Körperschall-Messdaten (KSM) eine mechanische Krafteinwirkung auf die Batteriewanne (12) zu bestimmen.The invention relates to a system (10) for detecting damage to high-voltage battery modules (19) for an electric vehicle (20) with at least one battery tray (12) in which at least one high-voltage battery module (19) is arranged; at least one structure-borne sound sensor ( 15), which is set up to record structure-borne noise (KS) of the battery tray (12) and to generate corresponding structure-borne noise measurement data (KSM); andat least one evaluation system (22) which is set up to receive the structure-borne sound measurement data (KSM) from the structure-borne sound sensor (15). It is provided that the evaluation system (22) is also set up to determine a mechanical force acting on the battery tray (12) as a function of the structure-borne sound measurement data (KSM).
Description
Die Erfindung betrifft ein System zur Erkennung von Beschädigungen von Hochvolt-Batteriemodulen für ein Elektrofahrzeug mit wenigstens einer Batteriewanne, in der wenigstens ein Hochvolt-Batteriemodul angeordnet ist; wenigstens einem Körperschallsensor, der dazu eingerichtet ist, Körperschall der Batteriewanne zu erfassen und entsprechende Körperschall-Messdaten zu erzeugen; und wenigstens einem Auswertesystem, das dazu eingerichtet ist, die Körperschall-Messdaten von dem Körperschallsensor zu empfangen.The invention relates to a system for detecting damage to high-voltage battery modules for an electric vehicle with at least one battery tray in which at least one high-voltage battery module is arranged; at least one structure-borne noise sensor which is set up to detect structure-borne noise from the battery tray and to generate corresponding structure-borne noise measurement data; and at least one evaluation system which is set up to receive the structure-borne sound measurement data from the structure-borne sound sensor.
Hochvolt-Batteriemodule in Elektrofahrzeugen, insbesondere Lithium-Ionen-Batterien, die zurzeit die höchste spezifische Energie und Leistung sowie eine akzeptable Lebensdauer aufweisen, sind bekannt. Hierbei ist die Sicherheit von Hochvolt-Batteriemodulen eine essentielle Voraussetzung. Bei Beschädigung eines Hochvolt-Batteriemoduls durch mechanische Krafteinwirkung kann es in dem Batteriemodul zu einem lokalen Kurzschluss kommen, der die nähere Umgebung der Schadstelle sehr stark aufheizt. Diesen Prozess bezeichnet man auch als thermisches Durchgehen („Thermal Runaway“). Dies kann auch zu einer zumindest teilweisen Zerstörung des Hochvolt-Batteriemoduls durch die Wärme-/Hitzeentwicklung führen. Ebenso kann ein Übertritt auf benachbarte Hochvolt-Batteriemodule stattfinden. Ferner besteht das Risiko der Bildung und Ausbreitung von giftigen Gasen aufgrund der Wärmeentwicklung.High-voltage battery modules in electric vehicles, in particular lithium-ion batteries, which currently have the highest specific energy and power as well as an acceptable service life, are known. The safety of high-voltage battery modules is an essential requirement here. If a high-voltage battery module is damaged by the action of mechanical force, a local short circuit can occur in the battery module, which greatly heats up the immediate vicinity of the damaged area. This process is also known as thermal runaway. This can also lead to an at least partial destruction of the high-voltage battery module as a result of the heat / heat development. A transfer to neighboring high-voltage battery modules can also take place. There is also a risk of toxic gases being formed and spreading due to the heat generated.
Die der Erfindung zu Grunde liegende Aufgabe wird darin gesehen, eine umfangreiche Überwachung von Hochvolt-Batteriemodulen in einem Elektrofahrzug bereitzustellen, um mögliche Einwirkungen frühzeitig zu erkennen. The object on which the invention is based is seen in providing extensive monitoring of high-voltage battery modules in an electric vehicle in order to detect possible effects at an early stage.
Diese Aufgabe wird gelöst durch ein System mit den Merkmalen des Patentanspruchs 1 und durch ein Elektrofahrzeug mit den Merkmalen des Patentanspruchs 12. Vorteilhafte Ausgestaltungen mit zweckmäßigen Weiterbildungen sind in den abhängigen Patentansprüchen angegeben.This object is achieved by a system with the features of claim 1 and by an electric vehicle with the features of
Vorgeschlagen wird also ein System zur Erkennung von Beschädigungen von Hochvolt-Batteriemodulen für ein Elektrofahrzeug mit wenigstens einer Batteriewanne, in der wenigstens ein Hochvolt-Batteriemodul angeordnet ist; wenigstens einem Körperschallsensor, der dazu eingerichtet ist, Körperschall der Batteriewanne zu erfassen und entsprechende Körperschall-Messdaten zu erzeugen; und wenigstens einem Auswertesystem, das dazu eingerichtet ist, die Körperschall-Messdaten von dem Körperschallsensor zu empfangen. Dabei ist vorgesehen, dass das Auswertesystem ferner dazu eingerichtet ist, in Abhängigkeit von den Körperschall-Messdaten eine mechanische Krafteinwirkung auf die Batteriewanne zu bestimmen.What is proposed is a system for detecting damage to high-voltage battery modules for an electric vehicle with at least one battery tray in which at least one high-voltage battery module is arranged; at least one structure-borne noise sensor which is set up to detect structure-borne noise from the battery tray and to generate corresponding structure-borne noise measurement data; and at least one evaluation system which is set up to receive the structure-borne sound measurement data from the structure-borne sound sensor. It is provided that the evaluation system is also set up to determine a mechanical force on the battery tray as a function of the structure-borne sound measurement data.
Mittels des Körperschallsensors lässt sich die Ausbreitung von Schall in der Batteriewanne messen. Insbesondere dient dies der Erfassung von der Batteriewanne zugeordneten Bewegungs- und Kraftwechselgrößen (wie Schwingweg, Schwinggeschwindigkeit, Beschleunigung), die aufgrund externer Einflüsse zustande kommen und die zu entsprechenden strukturellen Deformierungen der Batteriewanne führen können. Auf Grundlage dieser Körperschall-Messdaten bestimmt das Auswertesystem die Krafteinwirkung auf die Batteriewanne, um so eine mögliche Auswirkung auf das in der Batteriewanne angeordnete Hochvolt-Batteriemodul zu bestimmen.The structure-borne sound sensor can be used to measure the propagation of sound in the battery tray. In particular, this is used to record the movement and force change variables assigned to the battery tray (such as vibration displacement, vibration speed, acceleration), which occur due to external influences and which can lead to corresponding structural deformations of the battery tray. On the basis of this structure-borne noise measurement data, the evaluation system determines the force acting on the battery tray in order to determine a possible effect on the high-voltage battery module arranged in the battery tray.
In diesem Zusammenhang kann das Auswertesystem anhand der bestimmten mechanischen Krafteinwirkung eine mögliche Beschädigung des Hochvolt-Batteriemoduls ermitteln. Wenn beispielsweise die Krafteinwirkung auf die Batteriewanne einen festgelegten Grenzwert überschreitet, kann das Auswertesystem eine Beschädigung der Batteriewanne und des darin angeordneten Hochvolt-Batteriemoduls annehmen bzw. feststellen.In this context, the evaluation system can determine possible damage to the high-voltage battery module based on the specific mechanical force. For example, if the force acting on the battery tray exceeds a specified limit value, the evaluation system can assume or determine damage to the battery tray and the high-voltage battery module arranged therein.
Ferner kann das Auswertesystem bei einer Beschädigung des Hochvolt-Batteriemoduls den Ort und Grad der mechanischen Krafteinwirkung bestimmen und eine Warnung an ein dem Elektrofahrzeug zugeordneten Bordcomputer senden. Mittels der Körperschall-Messdaten kann der Ort, d.h. der Ursprung einer Körperschallquelle bestimmt werden. Dadurch kann der Bereich der Batteriewanne, in welchem die Krafteinwirkung auftritt, erfasst werden. Da Körperschall-Messdaten kinematische Größen und somit richtungsabhängig sind kann auch die Richtung und die Stärke der einwirkenden Kraft bestimmt werden. Anhand dieser Daten kann das Auswertesystem den Grad der Beschädigung ermitteln und eine entsprechende Warnung senden.Furthermore, if the high-voltage battery module is damaged, the evaluation system can determine the location and degree of the mechanical force and send a warning to an on-board computer assigned to the electric vehicle. Using the structure-borne sound measurement data, the location, i.e. the origin of a structure-borne sound source can be determined. As a result, the area of the battery tray in which the force occurs can be recorded. Since structure-borne sound measurement data are kinematic variables and are therefore direction-dependent, the direction and strength of the acting force can also be determined. Based on this data, the evaluation system can determine the degree of damage and send a corresponding warning.
Die Batteriewanne kann an einer Unterseite des Elektrofahrzeugs anbringbar oder angebracht sein.The battery tray can be attached or attached to an underside of the electric vehicle.
Ferner kann die Batteriewanne überwiegend aus Aluminium gefertigt sein. Aluminium weist gute Körperschalleigenschaften auf. Hierdurch können die Körperschall-Messdaten mit einer höheren Genauigkeit durch den Körperschallsensor bestimmt werden und somit kann eine bessere Schadensermittlung durchgeführt werden.Furthermore, the battery tray can be made predominantly of aluminum. Aluminum has good structure-borne sound properties. As a result, the structure-borne sound measurement data can be determined with a higher accuracy by the structure-borne sound sensor and thus a better damage determination can be carried out.
Der Körperschallsensor kann mit der Batteriewanne verbunden, insbesondere an diese gesteckt sein. Die Steckverbindung erlaubt eine einfach Auswechslung des Körperschallsensors, was die Wartung des Elektrofahrzeugs vereinfachen kann. Zusätzlich kann auch für bereits in Betrieb genommene Elektrofahrzeuge mit Hochvolt-Batteriemodulen der Körperschallsensor nachgerüstet werden.The structure-borne noise sensor can be connected to the battery tray, in particular plugged into it. The plug connection allows the structure-borne noise sensor to be exchanged easily, which can simplify maintenance of the electric vehicle. In addition, the structure-borne noise sensor can also be retrofitted for electric vehicles that have already been commissioned with high-voltage battery modules.
Das System kann ferner wenigstens einen Batteriesensor umfassen, der Batteriezustandsdaten des Hochvolt-Batteriemoduls erfasst und entsprechende Batteriezustands-Messdaten erzeugt. Der Batteriesensor kann in dem Hochvolt-Batteriemodul angeordnet sein. Durch den Batteriesensor können zusätzliche Messdaten, wie Temperatur-, Strom-, Spannungs-, und Ladezustand des Hochvolt-Batteriemoduls erfasst werden, die den aktuellen Zustand des Hochvolt-Batteriemoduls wiedergeben.The system can furthermore comprise at least one battery sensor that records battery status data of the high-voltage battery module and generates corresponding battery status measurement data. The battery sensor can be arranged in the high-voltage battery module. The battery sensor can be used to record additional measurement data, such as temperature, current, voltage and charge status of the high-voltage battery module, which reflect the current status of the high-voltage battery module.
Hierbei kann das Auswertesystem die Batteriezustands-Messdaten von dem Batteriesensor empfangen und diese bei der Bestimmung der mechanischen Krafteinwirkung auf die Batteriewanne und bei der Ermittlung der möglichen Beschädigung des Hochvolt-Batteriemoduls mit berücksichtigen. Dadurch kann eine Beschädigung des Hochvolt-Batteriemoduls noch früher erkannt werden.Here, the evaluation system can receive the battery status measurement data from the battery sensor and take them into account when determining the mechanical force acting on the battery tray and when determining possible damage to the high-voltage battery module. This means that damage to the high-voltage battery module can be detected even earlier.
Der Körperschallsensor und der Batteriesensor können über eine drahtlose Verbindung die Körperschall-Messdaten und die Batteriezustands-Messdaten an das Auswertesystem senden. Die Datenübertragung kann durch ein fahrzeuginternes Netzwerk erfolgen, was weitere Übertragungskabel einspart.The structure-borne sound sensor and the battery sensor can send the structure-borne sound measurement data and the battery condition measurement data to the evaluation system via a wireless connection. The data can be transmitted through an in-vehicle network, which saves additional transmission cables.
Das Auswertesystem kann die Körperschall-Messdaten und die Batteriezustands-Messdaten über einen längeren Zeitraum speichern. Hierdurch können Schadenszenarien erstellt werden und ein Zeitpunkt für eine Wartung des Elektrofahrzeugs bestimmt werden.The evaluation system can store the structure-borne sound measurement data and the battery condition measurement data over a longer period of time. This allows damage scenarios to be created and a point in time for maintenance of the electric vehicle to be determined.
Das Auswertesystem umfasst ferner eine Datenverarbeitungseinheit, die dazu eingerichtet ist, Messdaten zu analysieren.The evaluation system also includes a data processing unit which is set up to analyze measurement data.
Ein Elektrofahrzeug kann mit einem oben beschriebenen System zur Erkennung von Beschädigungen von Hochvolt-Batteriemodulen bereitgestellt werden.An electric vehicle can be provided with a system described above for detecting damage to high-voltage battery modules.
Weitere Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsformen unter Bezugnahme auf die Figuren. Dabei zeigt:
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1 eine vereinfachte und schematische Prinzipdarstellung einer Ausführungsform eines Systems zur Erkennung von Beschädigungen an Hochvolt-Batteriemodulen für ein Elektrofahrzeug; -
2 eine vereinfachte und schematische Prinzipdarstellung einer Ausführungsform eines Auswertesystems des Systems; -
3 eine vereinfachte und schematische Prinzipdarstellung einer Ausführungsform von Hochvolt-Batteriemodulen des Systems; -
4 eine vereinfachte und schematische Prinzipdarstellung einer Ausführungsform eines Elektrofahrzeugs mit einem System zur Erkennung von Beschädigungen an Hochvolt-Batteriemodulen.
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1 a simplified and schematic diagram of an embodiment of a system for detecting damage to high-voltage battery modules for an electric vehicle; -
2 a simplified and schematic diagram of an embodiment of an evaluation system of the system; -
3 a simplified and schematic diagram of an embodiment of high-voltage battery modules of the system; -
4th a simplified and schematic diagram of an embodiment of an electric vehicle with a system for detecting damage to high-voltage battery modules.
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Das System kann ferner ein Batterierahmen
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In einer Ausführungsform können die Körperschall-Messdaten KSM und die Batteriezustands-Messdaten BZM über einen längeren Zeitraum gespeichert werden. Diese Daten können zum Beispiel in einem Speicher
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Claims (12)
Priority Applications (1)
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Citations (5)
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DE102014201162A1 (en) | 2014-01-23 | 2015-07-23 | Robert Bosch Gmbh | Battery cell, battery pack and transport container |
DE102014207395A1 (en) | 2014-04-17 | 2015-10-22 | Robert Bosch Gmbh | Method for battery management and battery management system |
DE102014018055A1 (en) | 2014-12-05 | 2016-06-09 | Audi Ag | High voltage component for a motor vehicle and motor vehicle |
DE102017218751A1 (en) | 2017-10-20 | 2019-04-25 | Bayerische Motoren Werke Aktiengesellschaft | Method and rating system for evaluating a further usability of a high-voltage memory of a motor vehicle after a critical event |
DE102018200541A1 (en) | 2018-01-15 | 2019-07-18 | Bayerische Motoren Werke Aktiengesellschaft | Monitoring an electrical energy storage |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014201162A1 (en) | 2014-01-23 | 2015-07-23 | Robert Bosch Gmbh | Battery cell, battery pack and transport container |
DE102014207395A1 (en) | 2014-04-17 | 2015-10-22 | Robert Bosch Gmbh | Method for battery management and battery management system |
DE102014018055A1 (en) | 2014-12-05 | 2016-06-09 | Audi Ag | High voltage component for a motor vehicle and motor vehicle |
DE102017218751A1 (en) | 2017-10-20 | 2019-04-25 | Bayerische Motoren Werke Aktiengesellschaft | Method and rating system for evaluating a further usability of a high-voltage memory of a motor vehicle after a critical event |
DE102018200541A1 (en) | 2018-01-15 | 2019-07-18 | Bayerische Motoren Werke Aktiengesellschaft | Monitoring an electrical energy storage |
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