KR102687127B1 - Bms 장치 및 그 제어 방법 - Google Patents
Bms 장치 및 그 제어 방법 Download PDFInfo
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Abstract
Description
도 2, 3은 본 발명에 따른 BMS 장치의 배터리 SOC에 따른 배터리의 온도 그래프의 실시예이다.
도 4는 본 발명에 따른 BMS 장치의 배터리 SOC에 따른 배터리의 온도 그래프의 다른 실시예이다.
도 5 내지 7은 본 발명에 따른 BMS 제어 방법의 순서도이다.
| 시점(t) | SOC(C) | 온도(T) |
| t1 | C1 | T1 |
| t2 | C2 | T2 |
| t3 | C3 | T3 |
| ... | ... | ... |
| t(k-2) | C(k-2) | T(k-2) |
| t(k-1) | C(k-1) | T(k-1) |
| t(k) | C(k) | T(k) |
| ... | ... | ... |
| SOC(C) | 온도(T) | ΔT/ΔC | 예측온도(T_exp) | I_opt |
| ... | ... | ... | ... | ... |
| C(k) | T(k) | ΔT/ΔC(k) | T_exp(k) | I_opt(k) |
| C(k+1) | T(k+1) | ΔT/ΔC(k+1) | T_exp(k+1) | I_opt(k+1) |
| C(k+2) | T(k+2) | ΔT/ΔC(k+2) | T_exp(k+2) | I_opt(k+2) |
| ... | ... | ... | ... | ... |
300 :제어부 C_th : 기준치
T_exp : 예측온도 T_th : 기준온도
S100 : 측정단계 S210 : 제 1 연산단계
S220 : 제 2 연산단계 S300 : 제어단계
Claims (10)
- 배터리의 온도(T), SOC(C), 전압(V), 충전전류(I)를 측정하거나 추정하는 측정부(100);
상기 측정부(100)에서 서로 다른 시점(t)에 측정된 복수의 배터리의 온도(T), SOC(C), 전압(V) 정보를 기초로, 상기 배터리의 SOC(C) 또는 전압(V)에 대한 상기 배터리의 온도(T)의 충전량별온도변화량(ΔT/ΔC)를 연산하는 제 1 연산부(210);
상기 배터리의 온도(T), SOC(C) 및, 상기 충전량별온도변화량(ΔT/ΔC) 정보를 기초로, 상기 배터리의 SOC(C)가 제1기준치(C_th1)로 충전되었을 때, 예측되는 배터리의 예측온도(T_exp)를 연산하는 제2연산부(220); 및
상기 제2연산부(220)에서 연산된 상기 예측온도(T_exp)와 사용자가 정한 제 1 기준온도(T_th1)를 비교한 정보를 기초로 제 1 충전전류(I_c1)를 제어하고, 상기 제 1 충전전류(I_c1)로 상기 배터리를 충전하는 제어부(300);
를 포함하는 BMS 장치(1000).
- 제1항에 있어서,
상기 제어부(300)는,
상기 예측온도(T_exp)가 제 1 기준온도(T_th1) 이하일 때는 제 1 충전전류(I_c1)를 증가시키고, 상기 예측온도(T_exp)가 제 1 기준온도(T_th1) 이상일 때는 제 1 충전전류(I_c1)를 감소시키는 것을 특징으로 하는 BMS 장치(1000).
- 제2항에 있어서,
상기 제 1 연산부(210)는 제 1 SOC(C1), 제 2 SOC(C2), 제 1 온도(T1), 제 2 온도(T2) 정보를 기초로 상기 충전량별온도변화량(ΔT/ΔC)를 연산하며,
상기 제 1 SOC(C1)는 제 1 시점(t1)에서 측정된 배터리의 SOC,상기 제 2 SOC(C2)는 제 1 시점(t1)과 다른 제 2 시점(t2)에서 측정된 배터리의 SOC이고,
상기 제 1 및 제 2 온도(T1, T2)는 각각 상기 제 1 및 제 2 시점(t1, t2)에서 측정된 배터리의 온도인 것을 특징으로 하는 BMS 장치(1000).
- 제2항에 있어서,
상기 제어부(300)는,
상기 측정부(100)에서 측정된 배터리의 온도(T)가 상기 제 1 기준온도(T_th1)를 초과하면, 상기 배터리의 충전전류(I)를 제 1 충전전류(I_c1)이하인 제 2 충전전류(I_c2)로 상기 배터리를 충전하는 것을 특징으로 하는 BMS 장치(1000).
- 제2항 내지 제4항 중 어느 한 항에 있어서,
상기 제어부(300)는,
상기 측정부(100)에서 측정된 배터리의 SOC(C)가 상기 제 1 기준치(C_th1)를 초과하면, 상기 배터리의 충전전류(I)를 제 1 충전전류(I_c1)와 다른 제 3 충전전류(I_c3)로 상기 배터리를 충전하는 것을 특징으로 하는 BMS 장치(1000).
- 배터리의 온도(T), SOC(C), 전압(V), 충전전류(I)를 측정하거나 추정하는 측정단계(S100);
상기 측정단계(S100)에서 서로 다른 시점(t)에 측정된 복수의 배터리의 온도(T), SOC(C), 전압(V) 정보를 기초로, 상기 배터리의 SOC(C) 또는 전압(V)에 대한 상기 배터리의 온도(T)의 충전량별온도변화량(ΔT/ΔC)를 연산하는 제 1 연산단계(S210);
상기 배터리의 온도(T), SOC(C) 및, 상기 충전량별온도변화량(ΔT/ΔC) 정보를 기초로, 상기 배터리의 SOC(C)가 제 1 기준치(C_th1)로 충전되었을 때, 예측되는 배터리의 예측온도(T_exp)를 연산하는 제 2 연산단계(S220); 및
상기 제 2 연산단계(S220에서 연산된 상기 예측온도(T_exp)와 사용자가 정한 제 1 기준온도(T_th1)를 비교한 정보를 기초로 제 1 충전전류(I_c1)를 제어하고 하고, 상기 제 1 충전전류(I_c1)로 상기 배터리를 충전하는 제어단계(S300);
를 포함하는 BMS 제어 방법(1000).
- 제6항에 있어서,
상기 제어단계(S300)는,
상기 예측온도(T_exp)가 제 1 기준온도(T1) 이하일 때는 제 1 충전전류(I_c1)를 증가시키고, 상기 예측온도(T_exp)가 제 1 기준온도(T_th1) 이상일 때는 제 1 충전전류(I_c1)를 감소시키는 것을 특징으로 하는 BMS 제어 방법(1000).
- 제7항에 있어서,
상기 제 1 연산단계(S210)는 제 1 SOC(C1), 제 2 SOC(C2), 제 1 온도(T1), 제 2 온도(T2) 정보를 기초로 상기 충전량별온도변화량(ΔT/ΔC)를 연산하며,
상기 제 1 SOC(C1)는 제 1 시점(t1)에서 측정된 배터리의 SOC, 상기 제 2 SOC(C2)는 제 1 시점(t1)과 다른 제 2 시점(t2)에서 측정된 배터리의 SOC이고,
상기 제 1 및 제 2 온도(T1, T2)는 각각 상기 제 1 및 제 2 시점(t1, t2)에서 측정된 배터리의 온도인 것을 특징으로 하는 BMS 제어 방법(1000).
- 제7항에 있어서,
상기 제어단계(S300)는,
상기 측정단계(S100)에서 측정된 배터리의 온도(T)가 상기 제 1 기준온도(T_th1)를 초과하면, 상기 배터리의 충전전류(I)를 제 1 충전전류(I_c1) 이하인 제 2 충전전류(I_c2)로 상기 배터리를 충전하는 것을 특징으로 하는 BMS 제어 방법(1000).
- 제7항 내지 제9항 중 어느 한 항에 있어서,
상기 제어단계(S300)는,
상기 측정단계(S100)에서 측정된 배터리의 SOC(C)가 상기 제 1 기준치(C_th1)를 초과하면, 상기 배터리의 충전전류(I)를 제 1 충전전류(I_c1)와 다른 제 3 충전전류(I_c3)로 상기 배터리를 충전하는 것을 특징으로 하는 BMS 제어 방법(1000).
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