WO2023132525A1 - 충격 감지 모듈을 포함하는 배터리 팩 - Google Patents
충격 감지 모듈을 포함하는 배터리 팩 Download PDFInfo
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- WO2023132525A1 WO2023132525A1 PCT/KR2022/020848 KR2022020848W WO2023132525A1 WO 2023132525 A1 WO2023132525 A1 WO 2023132525A1 KR 2022020848 W KR2022020848 W KR 2022020848W WO 2023132525 A1 WO2023132525 A1 WO 2023132525A1
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- Prior art keywords
- battery pack
- impact
- voltage value
- value
- shock
- Prior art date
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- 238000005259 measurement Methods 0.000 claims description 75
- 230000035939 shock Effects 0.000 claims description 61
- 230000004888 barrier function Effects 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 11
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0052—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to impact
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/225—Measuring circuits therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/225—Measuring circuits therefor
- G01L1/2262—Measuring circuits therefor involving simple electrical bridges
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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
-
- 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
-
- 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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
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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
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/579—Devices or arrangements for the interruption of current in response to shock
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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
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- 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
Definitions
- the present invention relates to a battery pack including an impact detection module, and more particularly, to a battery pack capable of controlling the pack operation according to the strength of the impact by detecting the strength of the impact step by step with a voltage change according to the connection of a resistance caused by the impact. It's about the battery pack.
- Batteries are widely used in various fields ranging from small electronic devices such as smart phones, laptops, and tablet PCs to electric vehicles and energy storage systems (ESS).
- ESS energy storage systems
- a battery typically consists of an assembly comprising a plurality of unit cells and a configuration comprising a plurality of the assembly, and the cell comprises a cathode current collector, a separator, an active material, an electrolyte solution, an aluminum thin film layer, and the like. Including, it becomes a structure capable of charging and discharging by the electrochemical reaction between components.
- the battery is additionally equipped with a physical protection device, various sensing means, and firmware with precise algorithms for estimating SOC (State Of Charge) from the cell to the battery through assembly. It consists of
- Patent Document 1 KR 1053352 B1
- the present invention is intended to solve the above problems, and to provide a battery pack configured to sense the strength of impact applied to the battery pack step by step by applying an impact sensing module structure to the BMS and perform BMS control for this.
- the BMS module includes a reference voltage source V ref for sensing impact; a reference resistance R ref connected to the reference voltage source V ref ; and a voltage measurement unit measuring a divided voltage between the reference resistance R ref and the measurement resistance R 0
- the shock sensing module includes: a non-conductive barrier rib connected to an inside of a case of a battery pack through an elastic body; a measurement resistance R 0 connected to the reference resistance R ref ; A battery pack comprising first and second resistors R 1 , R 2 connected to both ends of the non-conductive barrier rib through hinges, one end of which is connected to ground, and the other end of which is connected to measurement resistance R0. to provide.
- the BMS module includes: a comparison determination unit that compares whether or not a predetermined impact arrival condition is satisfied based on the divided voltage measurement value of the voltage measurement unit, and determines the degree of impact applied to the battery pack according to the comparison result; a pack operation control unit that controls an operation of a battery pack in response to a result of the comparison and determination unit; It may be configured to further include.
- the other ends of the first resistor and the second resistor are arranged at a predetermined interval or less in the measurement resistor R 0 , and when vibration is applied to the battery pack case, the first and second resistors R 1 and R 2 are A change occurs in the measured value of the divided voltage of the voltage measuring unit in contact with the measuring resistance R 0 , wherein the distance d1 at which the first resistance R 1 is disposed adjacent to the measuring resistance R 0 is the second resistance It is characterized in that R 2 is different from the distance d2 disposed adjacent to the measurement resistance R 0 .
- the divided voltage value measured by the voltage measurement unit varies according to the degree of vibration generated in the battery pack; characterized by
- the measurement resistance R 0 is formed at a fixed position on the BMS board constituting the BMS module, has a contact portion with the first and second resistors R 1 and R 2 , and the first and second resistors R 1 and R 2 are connected to the non-conductive diaphragm by an elastic body to have a positional change against external vibration, and the distribution voltage is generated at the moment when the first and second resistors R 1 and R 2 contact the measuring resistor R 0 . It is measured as a voltage, and it is measured as a different value according to the degree of external vibration.
- the comparison determination unit compares whether the divided voltage measurement value of the voltage measurement unit is equal to the first reference voltage value, and if the same, determines that the battery pack is in a state without impact; And, comparing whether the number of cycles in which the voltage measurement value of the voltage measurement unit overturns the first reference voltage value and the second reference voltage value reaches a predetermined number of impacts, if it is reached, a weak impact is continuously applied to the battery pack judged to be in a losing state; and compares whether or not the measured value of the divided voltage of the voltage measurement unit reaches the third reference voltage value, and when it reaches the third reference voltage value, it is determined that a strong shock has been applied to the battery pack.
- the present invention is also a method for detecting an external shock state in the battery pack described above, wherein the reference resistance R ref connected to the reference voltage source V ref for implementing shock sensing on the BMS board and the measurement resistance R 0 of the shock sensing module are distributed at the connection point a division voltage measuring step of measuring voltage; an impact arrival condition comparison step of comparing whether or not a predetermined impact arrival condition is satisfied based on the divided voltage value measured in the divided voltage measurement step; An impact state determination step of determining the degree of impact applied to the battery pack according to the comparison result of the comparison step of whether or not the impact arrival condition is satisfied is provided.
- the battery pack shock detection method may include a pack operation control step of controlling an operation of the battery pack in response to the determination result of the shock state determination step;
- the measured divided voltage value is compared with a first reference voltage value, and the measured divided voltage value is compared to the first reference voltage value and the second reference voltage value. It compares whether the number of cycles of reversing the reference voltage value reaches a predetermined number of impacts, and compares whether the measured divided voltage value reaches a third reference voltage value.
- the shock state determination step when the measured distribution voltage value is equal to the first reference value as a result of comparison in the comparison step of whether the shock arrival condition is met, it is determined that there is no external shock applied to the battery pack, , When the number of cycles in which the measured distribution voltage value reverses the first reference voltage value and the second reference voltage value reaches a predetermined number of shocks, it is determined that a weak shock is continuously applied to the battery pack, When the measured distribution voltage value reaches the third reference voltage value, it is determined that a strong shock has been applied to the battery pack.
- the present invention can provide improved safety against external impact by detecting the strength of the impact step by step through a voltage change according to the connection of a resistance caused by the impact and controlling the operation of the battery pack according to the strength of the impact.
- FIG. 1 is a diagram schematically showing a battery pack according to an embodiment of the present invention.
- FIG. 2 is a diagram showing the configuration of an impact sensing module according to an embodiment of the present invention.
- FIG. 3 is a schematic diagram showing the impact sensing module of FIG. 2 as a circuit.
- FIG. 4 is a diagram illustrating an operation of an impact sensing module assuming a case in which a weak impact is applied to a battery pack.
- FIG. 5 is a diagram illustrating an operation of an impact sensing module assuming a case in which a strong impact is applied to a battery pack.
- FIG. 6 is a diagram showing an example of 00 appearing when a strong impact is applied to the battery pack.
- FIG. 1 is a diagram schematically showing a battery pack according to an embodiment of the present invention.
- the battery pack 10 of the present invention largely includes a BMS module 100 , a cell module 200 , and an impact detection module 300 .
- the BMS module 100 includes a reference voltage source (V ref ) for implementing shock sensing, a reference resistance (R ref ) connected to the reference voltage source (V ref ), and the reference resistance ( R ref ) and a voltage measurement unit 110 for measuring a distribution voltage (V In ) at a connection point between a measurement resistance pattern (R 0 ) formed in an impact detection module 300 to be described later, and configured to include a voltage measuring unit 110, which will be described later
- a control unit (not shown) may be further included.
- the cell module 200 may include one or more battery cells (not shown).
- FIG. 2 is a diagram showing the configuration of an impact sensing module according to an embodiment of the present invention.
- the impact sensing module 300 is configured to sense the intensity of impact applied to the battery pack 10 step by step, and may include the following elements.
- the shock sensing module 300 of the present invention may be formed on a separate board from the above-described BMS module, installed in another part of the battery pack, or disposed together on a PCB board on which the BMS module is formed.
- the non-conductive barrier rib 310 is connected to the case of the battery pack 10 with an elastic body so that displacement occurs according to the vibration of the battery pack 10, or connected to a board on which the non-conductive barrier 310 is formed with an elastic body. It can be.
- the non-conductive barrier rib 310 surrounds a measurement resistance pattern R 0 described later.
- the elastic body may be implemented as, for example, a spring having restoring force.
- the measurement resistance pattern (R 0 ) is formed spaced apart from the inside of the non-conductive barrier rib 110, and one end is connected to the reference resistance (R ref ).
- the first and second resistors (R 1 , R 2 )
- the first and second resistors R 1 and R 2 are respectively connected to ends of the non-conductive barrier 310 and have one end connected to the ground (GND). More specifically, both ends of the non-conductive barrier 310 are connected through hinges 320, one end of which is connected to the ground (GND), and the other end is disposed adjacent to the measurement resistance pattern (R 0 ).
- the other ends of the first resistor (R 1 ) and the second resistor (R 2 ) are disposed adjacent to the measurement resistance pattern (R 0 ) at a predetermined interval or less, and the first resistor (R 1 )
- An interval disposed adjacent to the measurement resistance pattern R 0 and an interval disposed adjacent to the measurement resistance pattern R 2 , the second resistor R 2 are set to be different from each other.
- the hinge 320 has a restoring force, and even if a very large displacement occurs in the non-conductive barrier 310 due to an external impact, mechanically prevents the connection between the first and second resistors and the non-conductive barrier 310 from being damaged. .
- the first and second resistors may be spaced apart from the measurement resistance pattern R 0 , or the restoring force of the hinge may be set so that it remains in contact, , In these different cases, changes may be made to the determination of the shock level and the control of the operation of the battery pack, which will be described later.
- the hinge 320 is set so that the first resistor and the second resistor are in contact with the measurement resistance pattern R 0 for a while and then separated according to the displacement, in order to give a sufficient divided voltage measurement time.
- the restoring force strength of the hinge may be set so that the displacement returns with a time difference from the return of the non-conductive barrier 310 so that it is in contact for more than a time of . It is also possible to set the degree of restoring force of the hinge so that it is not restored.
- FIG. 3 is a schematic diagram of the impact detection module 300 of FIG. 2 as a circuit.
- the divided voltage measurement value (V In ) detected by the voltage measuring unit 110 of the BMS 100 due to the voltage distribution between the reference resistance (R ref ) and the measurement resistance (R 0 ) is expressed by the following formula is expressed as
- Control unit (not shown)
- the control unit may compare whether or not a predetermined shock arrival condition is satisfied based on the divided voltage measurement value (V In ) detected by the voltage measurement unit 110 and determine the shock level according to the comparison result.
- the operation of the battery pack may be controlled in response to the determination result.
- the comparison judging unit compares whether or not the external impact currently applied to the battery pack satisfies a predetermined impact arrival condition using the divided voltage measurement value detected by the voltage measurement unit 110, and determines the degree of impact according to the result.
- the comparison determination unit compares whether the divided voltage measurement value of the voltage measuring unit 110 is equal to the first reference voltage value, and determines that no impact is applied to the battery pack when the value is equal.
- the divided voltage measurement value V In of the voltage measurement unit 110 has the same value as the first reference voltage value.
- the first reference voltage value may be a value calculated by (Equation 1) described above.
- the comparison and determination unit counts the pulse period in which the divided voltage measurement value of the voltage measurement unit 110 moves back and forth between the first reference voltage value and the second reference voltage value, and compares whether the counted number of times reaches a predetermined number of impacts. In one case, it is determined that a weak impact is continuously applied to the battery pack.
- FIG. 4 is a diagram illustrating an operation of an impact detection module assuming a case in which a weak impact is applied to a battery pack.
- the measurement resistance (R 0 ) and the first and second resistances (R 1 , R 2 ) are differentially arranged in the gap, so the measurement resistance (R 0 ) and the first and second resistances (R 0 ) Even in a situation where the resistance (R 1 ) is in contact with each other, the measurement resistance (R 0 ) and the second resistance (R 2 ) do not come into contact.
- this state is schematized as a circuit as shown in FIG. 4 (b) and a weak impact is applied, the divided voltage measurement value (V Inw ) detected by the voltage measuring unit 110 is calculated and expressed by the following formula.
- the measurement resistance (R 0 ) and the first resistance (R 1 ) can repeat the state of contact and not contact, and the voltage level also goes back and forth between the first and second reference voltages in line with the impact. detected in the form of pulses.
- the divided voltage measurement value (V In ) of the voltage measuring unit 110 determines whether the pulse period in which the first reference voltage value and the second reference voltage value are reversed reaches a predetermined number of impacts. By comparison, it can be determined that a slight impact to the battery pack is continuously applied.
- the same value as the second reference voltage value continues for a predetermined number of shocks. It may be determined that a weak impact to the battery pack is continuously applied by comparing whether or not it is sensed as a .
- the second reference voltage value may be a value calculated by Equation 2 above.
- the comparison determination unit compares whether the distribution low voltage measurement value (V In ) of the voltage measurement unit 110 has reached the third reference voltage value, and determines that a strong shock has been applied to the battery pack when it has reached the third reference voltage value.
- FIG. 5 is a diagram illustrating an operation of an impact detection module assuming a case in which a strong impact is applied to a battery pack.
- V In V Inw In
- V Ins the voltage of V Ins becomes lower. Comparing the magnitudes of the three voltage values, it can be expressed in the form of a graph as shown in FIG. 6 .
- the pack operation control unit may perform operation control of the battery pack in response to the determination result of the comparison and determination unit.
- the normal operation of the battery pack may be maintained.
- This control unit may be implemented as a conventional battery BMS included in the BMS module 100 described above and a processor included therein, but is characterized in that it performs the characteristic functions of the present invention described above.
- the above-described voltage measuring unit 110 may be included as one component of the BMS.
- a shock sensing method of a battery pack comprises a reference voltage source (V ref ) for implementing shock sensing on a BMS board, a reference resistance (R ref ) connected to the reference voltage source (V ref ), and a battery
- V ref reference voltage source
- R ref reference resistance
- R ref battery
- the reference voltage source (V ref ) for shock detection implementation on the BMS board, the reference resistance (R ref ) connected to the reference voltage source (V ref ) and the measurement resistance pattern (R 0 ) of the shock detection module are connected at the connection point.
- the step of comparing whether an impact arrival condition is satisfied is a step of comparing whether or not a predetermined impact arrival condition is satisfied based on the divided voltage value measured in the dividing voltage measurement step.
- the measured divided voltage value is equal to the first reference voltage value.
- the first reference voltage value may be a value calculated by (Equation 1) described above.
- the number of cycles in which the measured divided voltage value reverses the first reference voltage value and the second reference voltage value may be counted, and whether or not the counted number reaches a predetermined number of impacts may be compared.
- the measured divided voltage value is initially detected as the same value as the first reference voltage value, it is possible to compare whether or not the same value as the second reference voltage value is continuously detected for a predetermined number of impacts. .
- the second reference voltage value may be a value calculated by (Equation 2) described above.
- the measured divided voltage value may be compared whether the measured divided voltage value reaches the third reference voltage value.
- the third reference voltage value may be a value calculated by (Equation 3) described above.
- the state of the impact intensity applied to the battery pack may be determined according to the comparison result of the shock arrival condition comparison step.
- the number of cycles in which the measured divided voltage value reverses the first reference voltage value and the second reference voltage value reaches a predetermined number of shocks or After the measured distribution voltage value is initially detected as the same value as the first reference voltage value, when the number of continuously detected values as the same value as the second reference voltage value reaches a predetermined number of shocks, a weak shock is applied to the current battery pack. It can be judged that it is a state that is continuously applied.
- the measured distribution voltage value reaches the third reference voltage value as a result of the comparison in the step of comparing whether the shock arrival condition is satisfied, it can be determined that a strong shock is currently applied to the battery pack.
- the pack operation control step is a step of controlling the operation of the battery pack in response to the determination result of the shock state determination step.
- the normal operation of the battery pack may be maintained and controlled.
- the level of the safety control operation is increased step by step according to the degree of impact applied to the battery pack and is controlled to be performed.
- V ref reference voltage source
- R ref reference resistance
- R 1 1st resistance
- R 2 Second resistance
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Abstract
Description
Claims (12)
- 배터리 팩에 있어서,BMS 모듈;배터리 팩에 가해지는 충격 강도를 단계적으로 감지하기 위한 충격 감지 모듈;을 포함하며,상기 BMS 모듈은,충격감지를 위한 기준전압원 Vref;상기 기준전압원 Vref에 연결되는 기준저항 Rref;상기 기준저항 Rref과 측정저항 R0 사이에서 분배전압을 측정하는 전압측정부;를 포함하여 구성되며,상기 충격 감지 모듈은,배터리 팩의 케이스 내측에 탄성체를 통하여 연결되는 비전도성 격벽;상기 기준저항 Rref에 연결되는 측정저항 R0;상기 비전도성 격벽의 양단부에 각각 힌지를 통하여 연결되며, 그 일단이 접지에 연결되고, 타단은 측정저항 R0에 연결되는 제1, 제2 저항 R1, R2;를 포함하여 구성되는 배터리 팩.
- 제1항에 있어서,상기 BMS 모듈은,상기 전압측정부의 분배전압 측정값을 기반으로 소정의 충격 도달 조건을 충족하는지를 비교하여, 그 비교 결과에 따라 배터리 팩에 가해지는 충격 정도를 판단하는 비교 판단부;상기 비교 판단부의 판단 결과에 대응하여 배터리 팩의 동작을 제어하는 팩 동작 제어부;를 더 포함하여 구성되는 배터리 팩.
- 제1항에 있어서,상기 제1 저항 및 제2 저항의 타단은, 상기 측정저항 R0에 소정 간격 이하로 배치되어, 상기 배터리 팩 케이스에 진동이 가해지는 경우, 상기 제1, 제2 저항 R1, R2이 상기 측정저항 R0에 접촉하여 상기 전압측정부의 분배전압 측정값에 변동이 발생하는 것;을 특징으로 하는 배터리 팩.
- 제3항에 있어서,상기 제1 저항 R1이 상기 측정저항 R0에 인접 배치되는 간격 d1은 상기 제2 저항 R2이 상기 측정저항 R0에 인접 배치되는 간격 d2과 서로 다른 것;을 특징으로 하는 배터리 팩.
- 제4항에 있어서,상기 d1과 d2가 상이하므로 배터리 팩에 발생하는 진동의 정도에 따라서 상기 전압측정부에서 측정되는 분배전압 값이 달라지는 것;을 특징으로 하는 배터리 팩.
- 제5항에 있어서,상기 측정저항 R0은 BMS 모듈을 구성하는 BMS 보드 상에 고정 위치에 형성되며, 상기 제1, 제2 저항 R1, R2과의 접촉부를 구비하고,상기 제1, 제2 저항 R1, R2은 상기 비전도성 격벽에 탄성체로 연결되어 외부 진동에 대하여 위치 변동을 가지는 것;을 특징으로 하는 배터리 팩.
- 제6항에 있어서,상기 분배전압은,상기 제1, 제2 저항 R1, R2이 상기 측정저항 R0에 접촉되는 순간 전압으로 측정되며,외부 진동의 정도에 따라서 다른 값으로 측정되는 것;을 특징으로 하는 배터리 팩.
- 제2항에 있어서,상기 비교 판단부는,상기 전압측정부의 분배전압 측정값이 제1 기준 전압 값과 동일한지를 비교하여, 동일한 경우 배터리 팩에 가해지는 충격이 없는 상태인 것으로 판단; 하고,상기 전압측정부의 분배전압 측정값이 제1 기준 전압 값과 제2 기준 전압 값을 번복하는 주기 횟수가 소정의 충격 횟수에 도달하였는지를 비교하여, 도달한 경우 배터리 팩에 약한 충격이 지속적으로 가해지는 상태인 것으로 판단; 하며,상기 전압측정부의 분배전압 측정값이 제3 기준 전압 값에 도달하였는지를 비교하여, 도달한 경우 배터리 팩에 강한 충격이 가해진 상태인 것으로 판단하는 것;을 특징으로 하는 배터리 팩.
- 제1항 내지 제8항 중 어느 한 항에 따른 배터리 팩에서 외부 충격 상태를 감지하는 방법에 있어서,BMS 보드에 충격감지 구현을 위한 기준전압원 Vref에 연결된 기준저항 Rref과 충격 감지 모듈의 측정저항 R0 연결지점에서 분배전압을 측정하는 분배전압 측정단계;상기 분배전압 측정단계에서 측정되는 분배전압 값을 기반으로 소정의 충격 도달 조건을 충족하는지의 여부를 비교하는 충격 도달 조건 충족여부 비교단계;상기 충격 도달 조건 충족여부 비교단계의 비교 결과에 따라 배터리 팩에 가해지는 충격 정도를 판단하는 충격 상태 판단단계;를 포함하는 배터리 팩 충격 감지 방법.
- 제9항에 있어서,상기 충격 상태 판단단계의 판단 결과에 대응하여 배터리 팩의 동작을 제어하는 팩 동작 제어단계;를 더 포함하는 배터리 팩 충격 감지 방법.
- 제9항에 있어서,상기 충격 도달 조건 충족여부 비교단계는,상기 측정된 분배전압 값이 제1 기준 전압 값과 동일한지를 비교하고,상기 측정된 분배전압 값이 제1 기준 전압 값과 제2 기준 전압 값을 번복하는 주기 횟수가 소정의 충격 횟수에 도달하였는지를 비교하고,상기 측정된 분배전압 값이 제3 기준 전압 값에 도달하였는지를 비교하는 것;을 특징으로 하는 배터리 팩 충격 감지 방법.
- 제11항에 있어서,상기 충격 상태 판단단계는,상기 충격 도달 조건 충족여부 비교단계의 비교 결과,상기 측정된 분배전압 값이 제1 기준 값과 동일한 경우, 배터리 팩에 가해지는 외부 충격이 없는 상태인 것으로 판단하고,상기 측정된 분배전압 값이 제1 기준 전압 값과 제2 기준 전압 값을 번복하는 주기 횟수가 소정의 충격 횟수에 도달한 경우, 배터리 팩에 약한 충격이 지속적으로 가해지는 상태인 것으로 판단하며,상기 측정된 분배전압 값이 제3 기준 전압 값에 도달한 경우, 배터리 팩에 강한 충격이 가해진 상태인 것으로 판단하는 것;을 특징으로 하는 배터리 팩 충격 감지 방법.
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KR20120061401A (ko) * | 2010-12-03 | 2012-06-13 | 한국표준과학연구원 | 충격력 측정장치, 충격력 측정 시스템, 그 장치를 이용한 충격력 측정방법, 그 시스템을 이용한 충격력 분석방법 및 그 기록매체 |
JP6176213B2 (ja) * | 2014-09-11 | 2017-08-09 | 三菱電機株式会社 | 蓄電システム |
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JPH06230023A (ja) * | 1992-03-04 | 1994-08-19 | Omron Corp | 変位検出センサ |
KR20020089104A (ko) * | 2001-05-17 | 2002-11-29 | 주식회사 태림테크 | 충격 감지 장치와 이를 이용한 충격 감지 회로 및이동통신 단말기의 제어방법 |
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JP6176213B2 (ja) * | 2014-09-11 | 2017-08-09 | 三菱電機株式会社 | 蓄電システム |
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