CONTROL APPARATUS OF SECONDARY BATTERY AND CONTROL METHOD

• Main Authors: TAKAHASHI TOMOAKI, YAMAUCHI SHUKO, SHINOMIYA KENJI
• Format: Patent
• Language: English; Japanese
• Published: 11.04.2019
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

To suppress deterioration of a battery during cooling of a secondary battery at a low temperature, and an output fluctuation in accordance with variation of the deterioration of the battery.SOLUTION: A control apparatus of a secondary battery, comprises: the secondary battery; a cooling device that inlets an outer air and cools the secondary battery by the outer air; a first temperature sensor detecting a temperature of the outer air; a second temperature sensor detecting the temperature of the secondary battery; and a control part that controls an operation of the secondary battery and the cooling device. The control part changes a cooling speed by the cooling device when a difference of a first inner resistance value of the secondary battery at the temperature of the outer air detected by the first temperature sensor and a second inner resistance value at the temperature of the secondary battery detected by the second temperature sensor is less than and is equal to a predetermined threshold value.SELECTED DRAWING: Figure 1 【課題】二次電池の低温冷却時の電池の劣化、電池の劣化のばらつきおよびそれらに伴う出力変動を抑制する。【解決手段】二次電池の制御装置として、二次電池と、外気を取り込み取り込んだ当該外気により二次電池を冷却する冷却装置と、外気の温度を検知する第１温度センサと、二次電池の温度を検知する第２温度センサと、二次電池および冷却装置の運転を制御する制御部とを備え、制御部は、第１温度センサが検知した外気の温度時での二次電池の第１内部抵抗値と第２温度センサが検知した二次電池の温度時での二次電池の第２内部抵抗値との抵抗値差が、所定の閾値より未満の場合と以上の場合とにより、冷却装置による冷却速度を変化させる。【選択図】図１