CN110691709B - Method and device for operating an electrical energy storage system, electrical energy storage system comprising such a device and corresponding use - Google Patents
Method and device for operating an electrical energy storage system, electrical energy storage system comprising such a device and corresponding use Download PDFInfo
- Publication number
- CN110691709B CN110691709B CN201880037932.XA CN201880037932A CN110691709B CN 110691709 B CN110691709 B CN 110691709B CN 201880037932 A CN201880037932 A CN 201880037932A CN 110691709 B CN110691709 B CN 110691709B
- Authority
- CN
- China
- Prior art keywords
- electrical energy
- energy storage
- storage system
- storage unit
- state variable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 173
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000013178 mathematical model Methods 0.000 claims abstract description 31
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 230000032683 aging Effects 0.000 claims description 19
- 238000000605 extraction Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 description 15
- 238000012360 testing method Methods 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 210000000352 storage cell Anatomy 0.000 description 2
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- -1 nickel metal hydride Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
Classifications
-
- 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
- B60L3/0092—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
-
- 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
- B60L3/0038—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to sensors
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/16—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/22—Balancing the charge of battery modules
-
- 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
-
- 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
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
-
- 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
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
-
- 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
- B60L2260/00—Operating Modes
- B60L2260/40—Control modes
- B60L2260/42—Control modes by adaptive correction
-
- 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
- B60L2260/00—Operating Modes
- B60L2260/40—Control modes
- B60L2260/44—Control modes by parameter estimation
-
- 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
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- 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
- H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
-
- 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
-
- 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
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
-
- 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
-
- 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
A method for operating an electrical energy storage system comprising at least one electrical energy storage unit is disclosed, comprising the following steps. A state variable, in particular a voltage, of at least one electrical energy storage unit is determined. Furthermore, the operability of a device for determining a state variable of at least one electrical energy storage unit is checked, which device comprises in particular a voltage detection device. Furthermore, in the event of a limited or missing operability of the device for determining the state parameter, a first further state parameter of the at least one electrical energy storage unit is determined on the basis of the first mathematical model and at least the determined state parameter. The electrical energy storage system is then operated using the first further state variable determined in the event of a limited or missing operability. Furthermore, the invention relates to a corresponding device, a corresponding electrical energy storage system and a corresponding use.
Description
Technical Field
The invention describes a method and a device for operating an electrical energy storage system comprising at least one electrical energy storage unit, as well as an electrical energy storage system having said device and the use of the electrical energy storage system.
Background
The number of electronic controllers used in today's automotive field is increasing, which depends for example on an increase in the degree of automation of driving. In particular for electrically driven vehicles, it is necessary to develop a battery having an associated battery management system. In this case, the battery management system generally ensures safe and reliable functioning of the respective battery cells and of the battery system formed by these battery cells by monitoring and controlling the current, voltage, temperature, insulation resistance and possibly other physical variables of the battery cells or of the entire battery system. By means of the parameters, management functions can be implemented which can essentially increase the service life, the reliability and the safety of the battery system and better control and regulate the battery system, for example using mathematical models.
Battery systems are typically divided into modules that contain battery cells and also typically form space cells. For example, one battery system is composed of 8 modules, each of which is mounted with 12 battery cells. In order to detect the voltage of the individual battery cells, a corresponding voltage sensor is provided. The voltage sensor may be electrically connected, for example, directly to the central control unit or also to a corresponding module control unit, which transmits the recorded data to the central control unit, for example, in compressed form. Therefore, operability of a sensor (e.g., a voltage sensor) installed in the battery system is very important for operation of the battery system. A failure of the voltage sensor (which may be determined, for example, by means of self-test) may, for example, result in an inability to obtain or supply electrical energy from the battery system for safety reasons.
Publication DE 10 2010 045 514 describes a method for operating a motor vehicle with an electrical energy store, in which, in the event of a sensor failure for estimating the terminal voltage of a battery cell, a further terminal voltage of a further battery cell is activated.
Publication JP 2013-167544 describes a device for monitoring a battery cell, wherein in case of a malfunction of a voltage measurement of the battery cell, a voltage falling over a plurality of battery cells is used.
Disclosure of Invention
A method for operating an electrical energy storage system comprising at least one electrical energy storage unit is disclosed, which has the features of the independent claim.
In this case, a state variable of at least one electrical energy storage unit is determined. The state variable may in particular comprise a voltage. Furthermore, operability of the device for determining a state variable of the at least one electrical energy storage unit is checked. The device may be configured, for example, to determine a state of charge parameter. In particular, the device comprises a voltage detection device, such as a voltage sensor and associated lines to the controller. In the event of a limited or missing operability of the device for determining the state parameter, a first further state parameter of the at least one electrical energy storage unit is determined on the basis of a first mathematical model of the at least one electrical energy storage unit and on the basis of at least the already determined state parameter of the at least one electrical energy storage unit. The limited or missing operability may mean, for example, that the measured value cannot be recorded anymore due to a line interruption or that the recorded measured value is still outside predefined limit values. This can be determined, for example, within the scope of a self-test. As mathematical model, for example, a so-called equivalent circuit model of the electrical energy storage unit can be used. Further, the mathematical model may include a data-based composite characteristic and/or may be probability-based. The electrical energy storage system is then operated using the first further state variable determined in the event of a limited or missing operability. Thus, continued operation of the electrical energy storage system is possible, at least in a limited manner. In this way, the electrical energy storage system can be brought into a safe state in a controlled manner, for example, a user of the system is accordingly informed in advance. Thus, abrupt quick shut-down of the electrical energy storage system and the accompanying possible adverse effects on the user or components of the electrical energy storage system can be avoided. For example, in the field of vehicles, a so-called "limp" mode may be considered, in which the electrical power demand on the electrical energy storage system is limited.
The state variables can here be: based on the state of charge, i.e. being or comprising a state of charge parameter, such as the voltage of the electrical energy storage unit; and/or based on a current flowing through the electrical energy storage unit and/or a temperature of the electrical energy storage unit. It is furthermore possible that the state variable is based on, for example, the pressure prevailing inside the electrical energy storage unit or on the resulting external strain of the housing of the electrical energy storage unit.
Further advantageous embodiments of the invention are the subject matter of the dependent claims.
According to one embodiment, the electrical energy storage system is operated such that the first limit value of the state variable is not exceeded and/or the second limit value of the state variable is not undershot. In the case of a voltage as a state variable, for example, the first limit value can be set to 4.0V and the second limit value can be set to 3.0V. Alternatively, the first limit value may be selected, for example, from a first range of 3.8V to 4.4V, and the second limit value may be selected from a second range of 2.6V to 3.2V. Depending on the respective characteristics of the respective electrical energy storage units. It is therefore possible to maintain a sufficient distance from the voltage values that jeopardize the safety of the electrical energy storage system. For example, in the case of the limit values given by way of example above, safety may be compromised if the limit value exceeds 4.2V. The safety distance has therefore been set to 0.2. 0.2V in order to have a sufficient safety margin even in the event of a limitation or loss of operability of the device for determining the state variable.
According to one embodiment, at least one aging state variable of the electrical energy storage unit, such as a maximum possible capacitance or a storable charge quantity or resistance, is determined. The maximum possible storable energy is also possible as an ageing state variable. Since these parameters vary over time and as a function of the use of the electrical energy storage unit, the age or the extent of the loss of the electrical energy storage unit can be inferred therefrom. Subsequently, a first mathematical model is adapted based on the at least one aging state parameter. This is preferably done with the operability of the device for determining the state variable intact. In this way, it is advantageously ensured that the first mathematical model of the electrical energy storage unit reflects the characteristics of the electrical energy storage unit as well as possible. This enables a more accurate and thus safer operation of the electrical energy storage system using the first further state parameter determined in the event of limited or absent operability.
According to one embodiment, the electrical energy storage system comprises a plurality of electrical energy storage units, and the first further state variable of the electrical energy storage unit, which is determined in the event of a limited or missing operability of the device for determining the state variable, is compared with the second further state variable, which is based on a voltage dropped across the plurality of electrical energy storage units. The plausibility check of the first further state variable determined by means of the first mathematical model is thereby made possible, which advantageously increases the reliability of the method. Based on the comparison of the state variables, the electrical energy storage system is operated using the first further state variable determined in the event of a limited or missing operability, wherein the extraction of electrical energy from the electrical energy storage unit and/or the electrical energy storage system is additionally inhibited after a first predefined period of time or alternatively after the consumption or reception of the first predefined electrical energy with a predefined maximum possible power output/reception. For example, it can be derived from the comparison that the difference in the state variables lies within a predefined range, which does not prevent the continued operation of the electrical energy storage system. In this way, it is advantageously possible to continue to operate the electrical energy storage system safely with the predefined maximum possible power output/reception at least for the first predefined period of time or alternatively within the first predefined range of energy.
According to one embodiment, the electrical energy storage system comprises at least two electrical energy storage units, and a third further state variable of the at least one further electrical energy storage unit is determined on the basis of the second mathematical model. The type of the second mathematical model may correspond to the first mathematical model. The third further state variable of the further electrical energy storage unit is then compared with the first further state variable of the electrical energy storage unit determined in the event of a limited or missing operability of the device for determining the state variable. The reliability of the method is thereby advantageously increased by making possible a plausibility check of the first further state variable determined by means of the first mathematical model. Based on the comparison of the state variables, the electrical energy storage system is operated using the first further state variable determined in the event of a limited or missing operability, wherein the extraction of electrical energy from the electrical energy storage system is additionally inhibited after a second predefined period of time. The latter may be accomplished, for example, by a corresponding manipulation of a so-called relay located in the electrical energy storage system. For example, it can be derived from the comparison that the difference in the state variables lies within a predefined range, which does not prevent the continued operation of the electrical energy storage system. In this way, it is advantageously possible to continue to operate the electrical energy storage system safely at least for a second predefined period of time, wherein, for example, a measured value of another electrical energy storage unit is used.
According to one embodiment, at least one aging state variable of at least two electrical energy storage units is determined before checking the operability of the device for determining the state variable of at least one electrical energy storage unit. Subsequently, the aging state variables of the at least two electrical energy storage units are compared with one another. Both the first mathematical model and the second mathematical model can be used in the method steps. In this way, it can be advantageously determined in particular whether at least two electrical energy storage units have similar aging characteristics. The electrical energy storage system is operated using the first further state variable determined in the event of a limited or missing operability, as a function of the comparison of the state variables and of the aging state variable. In this case, the extraction of electrical energy from the electrical energy storage system is additionally inhibited after a third predefined period of time and/or after a third predefined energy has been consumed with the likewise predefined maximum possible power output/reception, wherein the third predefined energy and/or the length of the third predefined period of time is defined as a function of the state variable and/or the aging state variable. This may be accomplished, for example, by a corresponding manipulation of a shut-off device (e.g., a relay) located in the electrical energy storage system. For example, it can be derived from the comparison that not only the differences of the state variables lie within a predefined range, but also the differences of the aging state variables lie within another predefined range. In this way, it is ensured, for example, that the electrical energy storage unit, whose device no longer functions correctly to determine the state variable, and the further electrical energy storage unit have similar electrical properties. In this way, it is advantageously possible to continue to operate the electrical energy storage system safely at least for a third predefined period of time or within a third predefined range of energy.
According to one embodiment, the first mathematical model and the second mathematical model are identical and/or are based on differential equations. Thus, a simple comparison between the model and its parameters and states can advantageously be made. Furthermore, the dynamic process inside the electrical energy storage unit can be well reflected by differential equations or correspondingly discretized differential equations.
An electrical energy storage unit is understood to mean, in particular, an electrochemical cell and/or a battery module having at least one electrochemical cell and/or a battery pack having at least one battery module. For example, the electrical energy storage unit may be a lithium-based battery unit or a lithium-based battery module or a lithium-based battery pack. The electrical energy storage unit may in particular be a lithium-ion battery unit or a lithium-ion battery module or a lithium-ion battery pack. Furthermore, the type of battery cell may be a lithium polymer battery, a nickel metal hydride battery, a lead acid battery, a lithium air battery or a lithium sulfur battery, or in general a battery of any electrochemical composition. The capacitor may also act as an electrical energy storage unit.
The invention further relates to a device for operating an electrical energy storage system, comprising at least one component, which is provided for carrying out the steps of the method according to one of the disclosed embodiments. The aforementioned advantages apply accordingly. The at least one device may include, for example, a battery management controller and corresponding power electronics (e.g., an inverter), as well as a current sensor and/or a voltage sensor and/or a temperature sensor. The electronic control unit, in particular in the form of an electronic battery manager, may also be such a device. An electronic control unit is understood to mean, in particular, an electronic controller, which comprises, for example, a microcontroller and/or a special-purpose hardware component, such as an ASIC, but can equally be a personal computer or a programmable logic controller.
Furthermore, the subject matter of the present invention is an electrical energy storage system comprising a plurality of electrical energy storage units and the above-described device for operating an electrical energy storage system. The advantages mentioned apply accordingly.
Furthermore, the subject of the invention is the use of the electrical energy storage system in electric vehicles, including hybrid vehicles, in stationary electrical energy storage facilities, in electric hand tools, in portable devices for telecommunication or data processing, and in household appliances. The advantages mentioned apply accordingly.
Drawings
Advantageous embodiments of the invention are shown in the drawings and are explained in more detail in the following description.
In the drawings:
fig. 1 shows a flow chart of a method according to the invention according to a first embodiment;
fig. 2 shows a flow chart of a method according to the invention according to a second embodiment;
fig. 3 shows a flow chart of a method according to the invention according to a third embodiment;
fig. 4 shows a flow chart of a method according to the invention according to a fourth embodiment;
fig. 5 shows a time diagram of a state of charge variable calculated according to the method of the invention;
fig. 6 shows a schematic diagram of an apparatus for operating an electrical energy storage system.
Detailed Description
Like reference numerals denote like equipment parts or like method steps throughout the drawings.
Fig. 1 shows a flow chart of a method according to the invention according to a first embodiment. In a first step S11, one or more parameters describing the energy and/or power that can currently be extracted from the electrical energy storage unit are determined for at least one electrical energy storage unit of the electrical energy storage system. Which is for example a state of charge value. Here, the state of charge value typically floats in a range between 0% and 100% and can be regarded as the amount of charge currently available. In this determination step, the voltage present between the two terminals of the electrical energy storage unit is detected. Subsequently, in a further process of the method, the operability of the device for detecting voltages is checked in a second step S12. The operability check includes checking whether the detected voltage value is within a reasonable voltage window, for example between 0V and 5V, in particular between 0V and 4.3V. Depending on the type of electrical energy storage unit used respectively. Furthermore, the checking of the operability may also comprise a so-called self-test, in which a known test voltage is detected and the detected test voltage value is compared with the known value of the test voltage. If there is a corresponding deviation, the operability of the device for detecting the voltage is considered to be limited. Subsequently, in a third step S13, in the case of a limited operability of the device for detecting a voltage, a further state of charge value of the at least one electrical energy storage unit is redetermined, wherein the determining step is based on the first mathematical model of the voltage characteristic of the at least one electrical energy storage unit and the state of charge value determined in the first step S11. Subsequently, in a fourth step S14, the electrical energy storage system is operated using the further state of charge value determined in the third step S13.
Fig. 2 shows a flow chart of a method according to the invention according to a second embodiment. As described above, in a first step S21, a state of charge value of at least one electrical energy storage unit of the electrical energy storage system is determined. Subsequently, in a second step S22, an internal resistance value of at least one electrical energy storage unit is determined. This may be done, for example, by taking the quotient of the voltage value and the current value of the electrical energy storage unit. Subsequently, in a third step S23, the first mathematical model is adapted using the determined internal resistance in order to accurately reflect the current voltage characteristics of the at least one electrical energy storage unit. Advantageously, the determination of the internal resistance value is also performed using a first mathematical model. Subsequently, as described above, in the fourth step S24, operability of the apparatus for detecting voltage is checked. In the event of a limited or missing operability, a further state of charge value of the at least one electrical energy storage unit is redetermined in a fifth step S25 as described above, wherein the determining step is based on the first mathematical model of the at least one electrical energy storage unit and the state of charge value determined in the first step S21. Subsequently, in a sixth step S26, the electrical energy storage system is operated using the further state of charge value determined in the fifth step S25.
Fig. 3 shows a flow chart of a method according to the invention according to a third embodiment. In a first step S31, a voltage value of at least one electrical energy storage unit of the electrical energy storage system is determined by means of a voltage detection device. The electrical energy storage system here comprises a plurality of electrical energy storage units. In this case, the voltage may be regarded as an indicator of the state of charge of the at least one electrical energy storage unit. Subsequently, at a later point in time, in a second step S32, the operability of the voltage detection device is checked as described above. In a third step S33, in the event of a limited or missing operability of the voltage detection device, a first further voltage value of the at least one electrical energy storage unit is determined, wherein this is performed on the basis of the first mathematical model of the electrical energy storage unit and the voltage value determined in at least the first step S31. In a fourth step S34, the further voltage value determined in the third step S33 is compared with a second further voltage value, wherein the second further voltage value is based on the voltage dropped across the plurality of electrical energy storage cells. The second further voltage value may for example be based on a so-called module voltage measurement which detects the voltage of the electrical energy storage units mounted in the module and thus typically represents the potential difference over the electrical energy storage units connected in series in the module. If, for example, a comparison of the two voltage values yields that they differ only by a value lying within a predefined voltage difference, the first further voltage value of the at least one electrical energy storage unit determined in the third step S33 is used in a fifth step S35 to operate the electrical energy storage system. In addition, after a first predefined period of time (for example selected from the range of 5 seconds to 60 minutes, in particular in the range of 1 minute to 10 minutes), the extraction of electrical energy from the electrical energy storage unit and/or the electrical energy storage system is inhibited. For example, it is conceivable that at least one electrical energy storage unit is disconnected from the electrical circuit of the electrical energy storage system in the presence of a corresponding electrical or electronic component, as a result of which no more electrical energy can be extracted from the electrical energy storage unit. The electrical energy storage system may continue to operate.
Fig. 4 shows a flow chart of a method according to the invention according to a fourth embodiment. The electrical energy storage system here comprises at least two electrical energy storage units. In a first step S41, the voltage value of a first electrical energy storage unit of the at least two electrical energy storage units is determined by means of a voltage detection device, as already described above. Subsequently, in a second step S42, as described above, the operability of the voltage detection device is checked. If it is determined that the operability of the device is limited or completely absent, in a third step S43, a first further voltage value of the first electrical energy storage unit is determined based on the first mathematical model and the voltage value determined in the first step S41, as described above. Subsequently, in a fourth step S44, a second further voltage value of the further one of the at least two electrical energy storage units is determined, preferably using the same first mathematical model. Subsequently, in a fifth step S45, the first further voltage value determined in the third step S43 is compared with a second further voltage value of the further electrical energy storage unit. If a comparison of the two voltage values reveals that they differ only by a value lying within a predefined voltage difference, the electric energy storage system is continued to be operated in a sixth step S46 using the first further voltage value determined in the third step S43, wherein the extraction of electric energy from the electric energy storage system is further inhibited after a predefined period of time.
Fig. 5 shows a flow chart of a method according to the invention according to a fifth embodiment. The electrical energy storage system here comprises at least two electrical energy storage units. In a first step S51, the voltage value of a first electrical energy storage unit of the at least two electrical energy storage units is determined by means of a voltage detection device, as described above. Subsequently, in a second step S52, a so-called capacitance, i.e. the maximum storable charge quantity of the electrical energy storage unit, of each of the at least two electrical energy storage units is determined as an aging state variable. For this purpose, a mathematical model of the electrical energy storage unit and a corresponding adjustment structure, such as an observer, for example, can be used. Subsequently, as described above, in the third step S53, the operability of the voltage detection device is checked. If it is determined that the operability of the device is limited or completely absent as described above, in a fourth step S54 a first further voltage value of the first electrical energy storage unit is determined based on the first mathematical model and the further voltage value determined in the first step S51. In a fifth step S55, a second further voltage value of the further electric energy storage unit of the at least two electric energy storage units is determined, preferably using the same first mathematical model. Subsequently, in a sixth step S56, the determined capacitance values are compared with each other. The result of the comparison may be that the capacitance values differ only by a value lying within a predefined capacitance difference, so that the electrical energy storage cells have similar aging characteristics. Subsequently, in a seventh step S57, the first further voltage value determined in step S54 is compared with the second further voltage value. The result of the comparison of the two voltage values may be that they differ only by a value that lies within the predefined voltage difference. If both the capacitance value and the voltage value are present together in this way, the first further voltage value determined in the fourth step S54 is used in an eighth step S58 to operate the electrical energy storage system, wherein the extraction of electrical energy from the electrical energy storage system is additionally inhibited or limited after a predefined period of time and/or after a predefined maximum possible power consumption. Furthermore, the predefined energy and/or the length of the predefined time period is defined in dependence of the voltage value and/or the capacitance value. Thus, for example, a shorter or longer predefined time period and/or a predefined energy can be set for continued operation at a predefined maximum possible power as a function of the voltage difference and/or the capacitance difference.
Fig. 6 shows a schematic diagram of an apparatus 62 for operating an electrical energy storage system. In this case, corresponding measured values, for example current and voltage measured values, are read by corresponding sensors 61, which are used in the method according to the invention to be carried out on the device. The respective control commands generated by the method according to the invention are output by the device 62 to the respective electrical or electronic components 63, such as inverters and/or relays.
Claims (14)
1. Method for operating an electrical energy storage system comprising at least one electrical energy storage unit, the method comprising the steps of:
a) Determining a state parameter of the at least one electrical energy storage unit;
b) Checking the operability of a device (61) for determining a state parameter of said at least one electrical energy storage unit;
c) Determining a first further state variable of the at least one electrical energy storage unit based on the first mathematical model and the state variable determined at least in step a) in the event of a limited or absent operability of the device (61) for determining the state variable;
d) Operating the electrical energy storage system using the first further state parameter determined in the event of limited or absent operability;
e) Determining at least one aging state parameter of the electrical energy storage unit;
f) Adapting the first mathematical model based on the at least one aging state parameter;
g) Comparing the first further state variable of the at least one electrical energy storage unit determined in step c) in the event of a limited or missing operability of the device (61) for determining state variables with a second further state variable based on a voltage dropping across a plurality of electrical energy storage units;
h) In accordance with the comparison of the state variables, the electrical energy storage system is operated using the first further state variable determined in the event of a limited or missing operability, wherein the extraction or reception of electrical energy from the electrical energy storage unit and/or the electrical energy storage system is additionally inhibited after a first predefined period of time and/or after a first predefined electrical energy is consumed or received.
2. Method according to claim 1, wherein in step d) the electrical energy storage system is operated such that the first limit value of the state variable and/or the second limit value of the state variable is not exceeded.
3. The method according to any of the preceding claims, wherein the electrical energy storage system comprises at least two electrical energy storage units, further comprising the steps of:
i) Determining a third further state variable of the at least one further electrical energy storage unit based on the second mathematical model;
j) Comparing the first further state parameter of the at least one electrical energy storage unit determined in step c) in the event of a limited or missing operability of the device (61) for determining state parameters with the third further state parameter of the further electrical energy storage unit;
k) The electrical energy storage system is operated using the first further state variable determined in the event of a limited or missing operability, as a function of the comparison of the state variables, wherein the extraction or reception of electrical energy from the electrical energy storage system is additionally inhibited after a second predefined period of time and/or after a second predefined electrical energy has been consumed or received.
4. A method according to claim 3, further comprising:
l) before step b), determining at least one aging state parameter of the at least two electrical energy storage units, respectively;
m) comparing said aging state parameters of said at least two electrical energy storage units;
n) operating the electrical energy storage system using the first further state variable determined in the event of limited or missing operability as a function of the comparison of the state variable and of the aging state variable, wherein the extraction or reception of electrical energy from the electrical energy storage system is additionally inhibited after a third predefined time period and/or after a third predefined electrical energy has been consumed or received, wherein the third predefined energy and/or the length of the third predefined time period is defined as a function of the state variable and/or the aging state variable.
5. A method according to claim 3, wherein the first mathematical model and the second mathematical model are identical and/or based on differential equations.
6. The method according to claim 1 or 2, wherein the state parameter is or comprises a state of charge parameter.
7. The method of claim 6, wherein the state of charge parameter is a voltage.
8. The method of claim 1, wherein the device comprises a voltage detection device.
9. The method of claim 1 or 8, wherein the at least one aging state parameter is resistance.
10. The method of claim 4, wherein the at least one aging state parameter is resistance.
11. Apparatus for operating an electrical energy storage system, comprising at least one device arranged to perform the steps of the method according to any one of claims 1 to 10.
12. The apparatus for operating an electrical energy storage system of claim 11, wherein the at least one device is an electronic battery manager.
13. An electrical energy storage system comprising a plurality of electrical energy storage units and an apparatus for operating an electrical energy storage system according to claim 11.
14. Use of the electrical energy storage system according to claim 13 in electrically driven vehicles including hybrid vehicles, in stationary electrical energy storage facilities, in electric hand tools, in portable devices for telecommunication or data processing and in household appliances.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017209674.8 | 2017-06-08 | ||
| DE102017209674.8A DE102017209674A1 (en) | 2017-06-08 | 2017-06-08 | Method and device for operating an electrical energy storage system and electrical energy storage system with the device and corresponding use |
| PCT/EP2018/063743 WO2018224330A1 (en) | 2017-06-08 | 2018-05-24 | Method and apparatus for operating an electrical energy accumulator system, and electrical energy accumulator system comprising said apparatus, and corresponding use thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110691709A CN110691709A (en) | 2020-01-14 |
| CN110691709B true CN110691709B (en) | 2024-02-13 |
Family
ID=62245320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880037932.XA Active CN110691709B (en) | 2017-06-08 | 2018-05-24 | Method and device for operating an electrical energy storage system, electrical energy storage system comprising such a device and corresponding use |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110691709B (en) |
| DE (1) | DE102017209674A1 (en) |
| WO (1) | WO2018224330A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018221962A1 (en) * | 2018-12-17 | 2020-06-18 | Robert Bosch Gmbh | Method for determining at least one operating parameter for the operation of an electrical energy store, and corresponding computer program, machine-readable storage medium and computing device |
| FR3132989A1 (en) * | 2022-02-21 | 2023-08-25 | Psa Automobiles Sa | MANAGEMENT OF THE VOLTAGE APPLIED TO A SERVITUDE BATTERY OF A SYSTEM DURING CHARGING OF A MAIN BATTERY |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5569999A (en) * | 1994-02-04 | 1996-10-29 | Mercedes-Benz Ag | System for monitoring the current drawn from traction batteries in electric vehicles and hybrid vehicles |
| US6137261A (en) * | 1998-01-26 | 2000-10-24 | Physio-Control Manufacturing Corporation | Rechargeable battery maintenance and testing system |
| WO2007059725A1 (en) * | 2005-11-25 | 2007-05-31 | Akkumulatorenfabrik Moll Gmbh & Co. Kg | Method for determining storage battery operating conditions |
| CN102263427A (en) * | 2010-05-28 | 2011-11-30 | 西门子公司 | Energy storage device |
| CN102652387A (en) * | 2009-12-17 | 2012-08-29 | 罗伯特·博世有限公司 | Energy storage system and method for the operation thereof |
| WO2012126722A1 (en) * | 2011-03-18 | 2012-09-27 | Continental Automotive Gmbh | Method for determining a charge state of an electrical energy storage device and electrical energy storage device |
| CN103003710A (en) * | 2010-07-29 | 2013-03-27 | 罗伯特·博世有限公司 | Method and arrangement for estimating the efficiency of at least one battery unit of a rechargeable battery |
| DE102011087761A1 (en) * | 2011-12-05 | 2013-06-06 | Robert Bosch Gmbh | Method for determining aging state of battery device utilized as energy storage for electric drive of e.g. electrical vehicle, involves detecting time period from time point to another point to determine calendarical age of battery device |
| CN103415778A (en) * | 2011-02-22 | 2013-11-27 | Sk新技术株式会社 | SOC correcting system having multiple packs in parallel |
| DE102013010311A1 (en) * | 2013-06-19 | 2014-12-24 | Daimler Ag | Method for determining the state of individual battery cells of a high-voltage battery and system therefor |
| CN106526486A (en) * | 2016-08-30 | 2017-03-22 | 郑州轻工业学院 | Construction method for lithium battery health life model |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4784566B2 (en) * | 2006-07-12 | 2011-10-05 | 日産自動車株式会社 | Secondary battery input / output power control apparatus and input / output power control method |
| KR20120030337A (en) * | 2009-04-06 | 2012-03-28 | 더 유니버시티 오브 아크론 | Battery pack manager unit and method for using same to extend the life of a battery pack |
| JP4744622B2 (en) * | 2009-07-01 | 2011-08-10 | トヨタ自動車株式会社 | Vehicle control device |
| DE102010011942A1 (en) * | 2010-03-18 | 2011-09-22 | Voith Patent Gmbh | System for storing electrical energy |
| DE102010045514B4 (en) | 2010-09-15 | 2018-03-29 | Audi Ag | A method for monitoring an electrical energy storage that provides an electrical voltage for an electric machine of a motor vehicle |
| JP5742745B2 (en) | 2012-02-16 | 2015-07-01 | 株式会社デンソー | Battery status monitoring device |
| US9583796B2 (en) * | 2014-04-01 | 2017-02-28 | Palo Alto Research Center Incorporated | Method for monitoring/managing electrochemical energy device by detecting intercalation stage changes |
| DE112015006444B4 (en) * | 2015-04-15 | 2024-02-22 | Mitsubishi Electric Corporation | Vehicle power supply device |
| KR101714211B1 (en) * | 2015-09-08 | 2017-03-08 | 현대자동차주식회사 | Appratus for estimating available power of high voltage battery and method thereof |
| US9925888B2 (en) * | 2016-03-02 | 2018-03-27 | Ford Global Technologies, Llc | Battery cell state of charge initialization in a presence of voltage measurement uncertainty |
-
2017
- 2017-06-08 DE DE102017209674.8A patent/DE102017209674A1/en active Pending
-
2018
- 2018-05-24 WO PCT/EP2018/063743 patent/WO2018224330A1/en active Application Filing
- 2018-05-24 CN CN201880037932.XA patent/CN110691709B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5569999A (en) * | 1994-02-04 | 1996-10-29 | Mercedes-Benz Ag | System for monitoring the current drawn from traction batteries in electric vehicles and hybrid vehicles |
| US6137261A (en) * | 1998-01-26 | 2000-10-24 | Physio-Control Manufacturing Corporation | Rechargeable battery maintenance and testing system |
| WO2007059725A1 (en) * | 2005-11-25 | 2007-05-31 | Akkumulatorenfabrik Moll Gmbh & Co. Kg | Method for determining storage battery operating conditions |
| CN102652387A (en) * | 2009-12-17 | 2012-08-29 | 罗伯特·博世有限公司 | Energy storage system and method for the operation thereof |
| CN102263427A (en) * | 2010-05-28 | 2011-11-30 | 西门子公司 | Energy storage device |
| CN103003710A (en) * | 2010-07-29 | 2013-03-27 | 罗伯特·博世有限公司 | Method and arrangement for estimating the efficiency of at least one battery unit of a rechargeable battery |
| CN103415778A (en) * | 2011-02-22 | 2013-11-27 | Sk新技术株式会社 | SOC correcting system having multiple packs in parallel |
| WO2012126722A1 (en) * | 2011-03-18 | 2012-09-27 | Continental Automotive Gmbh | Method for determining a charge state of an electrical energy storage device and electrical energy storage device |
| DE102011087761A1 (en) * | 2011-12-05 | 2013-06-06 | Robert Bosch Gmbh | Method for determining aging state of battery device utilized as energy storage for electric drive of e.g. electrical vehicle, involves detecting time period from time point to another point to determine calendarical age of battery device |
| DE102013010311A1 (en) * | 2013-06-19 | 2014-12-24 | Daimler Ag | Method for determining the state of individual battery cells of a high-voltage battery and system therefor |
| CN106526486A (en) * | 2016-08-30 | 2017-03-22 | 郑州轻工业学院 | Construction method for lithium battery health life model |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018224330A1 (en) | 2018-12-13 |
| CN110691709A (en) | 2020-01-14 |
| DE102017209674A1 (en) | 2018-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8947023B2 (en) | Battery control device and motor drive system | |
| EP3182146B1 (en) | Electronic device, system and method for insulation resistance measurements with functions of self-diagnosis and diagnosis of insulation loss with respect to ground of an energized electrical apparatus | |
| CN108604806B (en) | System and method for battery charge control | |
| KR101099811B1 (en) | Method and Apparatus for checking current sensor abnormality in battery pack | |
| JP6136679B2 (en) | Power storage device and power path switching device | |
| JP7302765B2 (en) | Battery diagnostic device and method | |
| CN110691709B (en) | Method and device for operating an electrical energy storage system, electrical energy storage system comprising such a device and corresponding use | |
| US20190041468A1 (en) | Systems and methods for battery micro-short estimation | |
| KR20240019187A (en) | Apparatus and method for diagnosing battery cell | |
| CN113745672B (en) | Battery self-heating control method, battery self-heating device, system and vehicle | |
| EP3323665B1 (en) | A battery pack balancing system and method | |
| JP5230789B2 (en) | Battery system | |
| CN111095662A (en) | Method for operating an electrical energy storage unit | |
| KR20230052763A (en) | Battery diagnosis apparatus, battery pack, electric vehicle, and battery diagnosis method | |
| JP6365725B2 (en) | Power storage device and power path switching device | |
| CN110915097A (en) | Method and device for operating an electrical energy storage system | |
| KR20210051539A (en) | Apparatus for diagnosing isolation of battery | |
| US20220399618A1 (en) | System for protecting a device having variable internal resistance | |
| KR102016394B1 (en) | Battery system with measuring device and method for repairing a battery system | |
| CN112034346A (en) | Method for fault detection in an electrical energy accumulator system | |
| WO2013002361A1 (en) | Cell system | |
| CN111095661A (en) | Method for operating an electrical energy storage unit | |
| KR20240030552A (en) | Fault diagnosis system and method of circuit component | |
| CN111052491A (en) | Method for operating an electrical energy storage unit | |
| CN112305444A (en) | Electric energy storage unit, method and device for operating an electric energy storage unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |