请教关于BQ28Z610温度校准问题
时间:10-02
整理:3721RD
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我目前有一款产品用的两节电芯串联,电量计用的BQ28Z610,在常温下校准内部温度和电池的温度都是OK的,但是放进低温-20度温箱(2h后 ),从寄存器看到的内部温度是正常的 (-20度),TS1和Cell 温度不正常(-25度),差异有5度,实际温度不可能到-25度,请教是什么原因造成的?这样对电量计低温放电容量精度应该影响大吧?
- 您好
- 请问您使用的外部的ntc电阻的型号是什么?不同的电阻型号对应的温度系数会不一样
您好,NTC是10K的,型号:KDT103F3435,具体参数如下,请帮忙确认下,非常感谢!
Temp (℃) |
AVG (Kohm) |
Temp (℃) |
AVG (Kohm) |
Temp (℃) |
AVG (Kohm) |
Temp (℃) |
AVG (Kohm) |
Temp (℃) |
AVG (Kohm) |
Temp (℃) |
AVG (Kohm) |
Temp (℃) |
AVG (Kohm) |
-40 | 201.630 | -1 | 28.859 | 38 | 6.230 | 77 | 1.816 | 116 | 0.662 | 155 | 0.286 | 194 | 0.141 |
-39 | 190.566 | 0 | 27.624 | 39 | 6.016 | 78 | 1.765 | 117 | 0.646 | 156 | 0.280 | 195 | 0.138 |
-38 | 180.195 | 1 | 26.443 | 40 | 5.811 | 79 | 1.716 | 118 | 0.632 | 157 | 0.275 | 196 | 0.136 |
-37 | 170.469 | 2 | 25.320 | 41 | 5.613 | 80 | 1.669 | 119 | 0.617 | 158 | 0.269 | 197 | 0.134 |
-36 | 161.344 | 3 | 24.253 | 42 | 5.423 | 81 | 1.622 | 120 | 0.603 | 159 | 0.264 | 198 | 0.132 |
-35 | 152.778 | 4 | 23.237 | 43 | 5.241 | 82 | 1.578 | 121 | 0.589 | 160 | 0.259 | 199 | 0.129 |
-34 | 144.663 | 5 | 22.272 | 44 | 5.066 | 83 | 1.535 | 122 | 0.576 | 161 | 0.254 | 200 | 0.127 |
-33 | 137.041 | 6 | 21.347 | 45 | 4.897 | 84 | 1.493 | 123 | 0.563 | 162 | 0.249 | ||
-32 | 129.880 | 7 | 20.467 | 46 | 4.735 | 85 | 1.453 | 124 | 0.550 | 163 | 0.245 | ||
-31 | 123.147 | 8 | 19.629 | 47 | 4.579 | 86 | 1.414 | 125 | 0.538 | 164 | 0.240 | ||
-30 | 116.814 | 9 | 18.831 | 48 | 4.429 | 87 | 1.376 | 126 | 0.526 | 165 | 0.236 | ||
-29 | 110.806 | 10 | 18.070 | 49 | 4.285 | 88 | 1.339 | 127 | 0.514 | 166 | 0.231 | ||
-28 | 105.152 | 11 | 17.341 | 50 | 4.147 | 89 | 1.304 | 128 | 0.503 | 167 | 0.227 | ||
-27 | 99.829 | 12 | 16.647 | 51 | 4.013 | 90 | 1.269 | 129 | 0.492 | 168 | 0.223 | ||
-26 | 94.816 | 13 | 15.985 | 52 | 3.884 | 91 | 1.236 | 130 | 0.481 | 169 | 0.219 | ||
-25 | 90.091 | 14 | 15.353 | 53 | 3.761 | 92 | 1.204 | 131 | 0.471 | 170 | 0.215 | ||
-24 | 85.602 | 15 | 14.751 | 54 | 3.641 | 93 | 1.172 | 132 | 0.460 | 171 | 0.211 | ||
-23 | 81.370 | 16 | 14.173 | 55 | 3.527 | 94 | 1.142 | 133 | 0.451 | 172 | 0.207 | ||
-22 | 77.379 | 17 | 13.621 | 56 | 3.416 | 95 | 1.113 | 134 | 0.441 | 173 | 0.203 | ||
-21 | 73.612 | 18 | 13.094 | 57 | 3.309 | 96 | 1.084 | 135 | 0.431 | 174 | 0.199 | ||
-20 | 70.057 | 19 | 12.592 | 58 | 3.207 | 97 | 1.056 | 136 | 0.422 | 175 | 0.196 | ||
-19 | 66.674 | 20 | 12.111 | 59 | 3.108 | 98 | 1.030 | 137 | 0.413 | 176 | 0.192 | ||
-18 | 63.479 | 21 | 11.650 | 60 | 3.012 | 99 | 1.004 | 138 | 0.405 | 177 | 0.189 | ||
-17 | 60.460 | 22 | 11.209 | 61 | 2.920 | 100 | 0.978 | 139 | 0.396 | 178 | 0.185 | ||
-16 | 57.607 | 23 | 10.788 | 62 | 2.831 | 101 | 0.954 | 140 | 0.388 | 179 | 0.182 | ||
-15 | 54.909 | 24 | 10.385 | 63 | 2.746 | 102 | 0.930 | 141 | 0.380 | 180 | 0.179 | ||
-14 | 52.338 | 25 | 10.000 | 64 | 2.663 | 103 | 0.907 | 142 | 0.372 | 181 | 0.176 | ||
-13 | 49.906 | 26 | 9.630 | 65 | 2.584 | 104 | 0.885 | 143 | 0.364 | 182 | 0.173 | ||
-12 | 47.605 | 27 | 9.276 | 66 | 2.507 | 105 | 0.863 | 144 | 0.357 | 183 | 0.170 | ||
-11 | 45.425 | 28 | 8.937 | 67 | 2.432 | 106 | 0.842 | 145 | 0.349 | 184 | 0.167 | ||
-10 | 43.362 | 29 | 8.612 | 68 | 2.361 | 107 | 0.822 | 146 | 0.342 | 185 | 0.164 | ||
-9 | 41.393 | 30 | 8.302 | 69 | 2.292 | 108 | 0.802 | 147 | 0.335 | 186 | 0.161 | ||
-8 | 39.527 | 31 | 8.003 | 70 | 2.225 | 109 | 0.782 | 148 | 0.329 | 187 | 0.158 | ||
-7 | 37.758 | 32 | 7.717 | 71 | 2.160 | 110 | 0.764 | 149 | 0.322 | 188 | 0.156 | ||
-6 | 36.081 | 33 | 7.443 | 72 | 2.098 | 111 | 0.745 | 150 | 0.316 | 189 | 0.153 | ||
-5 | 34.490 | 34 | 7.180 | 73 | 2.038 | 112 | 0.728 | 151 | 0.309 | 190 | 0.150 | ||
-4 | 32.971 | 35 | 6.928 | 74 | 1.979 | 113 | 0.711 | 152 | 0.303 | 191 | 0.148 | ||
-3 | 31.529 | 36 | 6.686 | 75 | 1.923 | 114 | 0.694 | 153 | 0.297 | 192 | 0.145 | ||
-2 | 30.160 | 37 | 6.453 | 76 | 1.869 | 115 | 0.678 | 154 | 0.291 | 193 | 0.143 |