[{"data":1,"prerenderedAt":422},["ShallowReactive",2],{"guide-zh-jk-bms-ocp-scp-settings":3,"guides-zh":363},{"id":4,"title":5,"body":6,"date":342,"description":343,"extension":344,"keywords":345,"meta":352,"navigation":353,"path":354,"related":355,"seo":359,"stem":360,"updated":361,"__hash__":362},"guides_zh\u002Fguides\u002Fjk-bms-ocp-scp-settings.md","JK BMS 过流保护设置：OCP 与 SCP 参数指南",{"type":7,"value":8,"toc":325},"minimark",[9,13,17,20,23,46,49,53,184,187,190,199,210,213,216,220,223,235,238,241,244,247,250,253,257,265,268,286,289,294,297,301,304,308,315],[10,11,12],"p",{},"JK BMS 的过流保护设置包括两个电流上限（各自带一个延时和一个恢复时间），外加一套独立的短路保护（SCP）。把最大充电电流和最大放电电流设为电芯、线缆和保险丝能够长期承受的数值，并且始终低于 BMS 的额定电流。除非你清楚自己的固件版本，否则 SCP 相关字段请保留出厂值。",[14,15,16],"h2",{"id":16},"保护是如何工作的",[10,18,19],{},"BMS 会持续测量电池组电流。当电流超过上限且持续时间长于设定延时，BMS 就会断开充电或放电 MOSFET，并在恢复时间内保持断开，之后再重新导通。",[10,21,22],{},"一共有三层保护：",[24,25,26,34,40],"ul",{},[27,28,29,33],"li",{},[30,31,32],"strong",{},"充电过流保护（Charge OCP）。"," 最大充电电流、充电过流保护延时、充电过流恢复时间。",[27,35,36,39],{},[30,37,38],{},"放电过流保护（Discharge OCP）。"," 最大放电电流、放电过流保护延时、放电过流恢复时间。",[27,41,42,45],{},[30,43,44],{},"短路保护。"," 短路保护延时和短路恢复时间。它的响应以微秒计，远快于 OCP。",[10,47,48],{},"OCP 针对的是过载，SCP 针对的是彻底短路。",[14,50,52],{"id":51},"jk-bms-过流保护设置表","JK BMS 过流保护设置表",[54,55,56,75],"table",{},[57,58,59],"thead",{},[60,61,62,66,69,72],"tr",{},[63,64,65],"th",{},"参数（与 App 和编辑器一致）",[63,67,68],{},"单位",[63,70,71],{},"常见范围",[63,73,74],{},"说明",[76,77,78,93,107,120,133,146,159,173],"tbody",{},[60,79,80,84,87,90],{},[81,82,83],"td",{},"最大充电电流",[81,85,86],{},"A",[81,88,89],{},"电池组容量的 0.3C 到 1C",[81,91,92],{},"不要超过 BMS 额定电流。文件中该字段上限为 400 A。",[60,94,95,98,101,104],{},[81,96,97],{},"充电过流保护延时",[81,99,100],{},"s",[81,102,103],{},"2 到 5",[81,105,106],{},"数值越长，越能容忍充电器的短暂尖峰。",[60,108,109,112,114,117],{},[81,110,111],{},"充电过流恢复时间",[81,113,100],{},[81,115,116],{},"30 到 120",[81,118,119],{},"常用 60 s。",[60,121,122,125,127,130],{},[81,123,124],{},"最大放电电流",[81,126,86],{},[81,128,129],{},"电池组容量的 0.5C 到 1C",[81,131,132],{},"受电芯、汇流排、保险丝和线缆限制。字段上限为 600 A。",[60,134,135,138,140,143],{},[81,136,137],{},"放电过流保护延时",[81,139,100],{},[81,141,142],{},"10 到 300",[81,144,145],{},"编辑器的典型值为 300 s。延时越长越能扛住逆变器的冲击电流。",[60,147,148,151,153,156],{},[81,149,150],{},"放电过流恢复时间",[81,152,100],{},[81,154,155],{},"60 到 120",[81,157,158],{},"常用 60 到 70 s。",[60,160,161,164,167,170],{},[81,162,163],{},"短路保护延时",[81,165,166],{},"µs",[81,168,169],{},"无推荐范围",[81,171,172],{},"取决于固件，见下文。",[60,174,175,178,180,182],{},[81,176,177],{},"短路恢复时间",[81,179,100],{},[81,181,169],{},[81,183,172],{},[10,185,186],{},"这些范围来自编辑器内置的推荐表，依据 JK 说明书、Gobel Power、Clever Solar 以及论坛反馈整理而成。它们是一个区间，而不是唯一正确的数值。",[14,188,189],{"id":189},"如何确定电流上限",[10,191,192,193,198],{},"JK Preset Studio 根据电芯倍率（C-rate）和电池组容量计算电流上限。对于 LiFePO4，",[194,195,197],"a",{"href":196},"\u002Fpresets","预设页面","上的三个损耗等级使用如下充放电倍率：",[24,200,201,204,207],{},[27,202,203],{},"温和：充电 0.3C，放电 0.5C。",[27,205,206],{},"均衡：充电 0.5C，放电 0.7C。",[27,208,209],{},"激进：充电 1C，放电 1C。",[10,211,212],{},"结果等于倍率乘以容量（Ah），四舍五入到整数安培，最低不小于 1 A。然后编辑器再用 BMS 额定电流封顶。额定电流从型号名读取：末尾 P 之前的数字乘以 10。JK-PB2A16S20P 对应 200 A，型号以 15P 结尾则对应 150 A。如果型号没有这样的后缀，额定电流未知，就不做封顶。",[10,214,215],{},"举例：280Ah 电池组选均衡等级，得到充电 140 A、放电 196 A。在 20P 的板子上两者都低于 200 A。如果对 314Ah 电池组使用 1C 的激进预设，需要 314 A，20P 板子会把它限制在 200 A。",[14,217,219],{"id":218},"按逆变器设定-ocp","按逆变器设定 OCP",[10,221,222],{},"要区分持续电流和峰值电流。最大放电电流是持续上限。逆变器和电机启动时会有短暂的冲击电流，常常是额定负载的两到三倍。",[224,225,226,229,232],"ol",{},[27,227,228],{},"用逆变器的持续功率除以电池电压，再加上 10% 到 20% 的余量，用于覆盖效率损失和低电压工况。",[27,230,231],{},"把最大放电电流设得高于这个值，但低于系统中最薄弱的环节。",[27,233,234],{},"用放电过流保护延时来扛住冲击。延时越长，启动尖峰越容易通过。默认的 300 s 已经很宽松，小系统用 10 s 可以获得更快的保护。",[10,236,237],{},"逆变器电容的上电浪涌可能触发的是 SCP 而不是 OCP。有些用户会调大 SCP 延时，但给逆变器做预充才是更好的办法。",[14,239,240],{"id":240},"线缆与保险丝的配合",[10,242,243],{},"在整条链路中，BMS 的电流上限应当是最低的那一个。线缆的持续载流能力必须高于 BMS 上限，保险丝的额定值应高于 BMS 上限、低于线缆载流量。这样一来，过载时 BMS 先动作，只有在 BMS 失效或短路快过 BMS 时保险丝才会熔断。电芯额定值同样重要：最大充电电流应符合电芯规格，例如 EVE 磷酸铁锂电芯的 0.5C。",[14,245,246],{"id":246},"触发保护之后会怎样",[10,248,249],{},"如果恢复时间结束后过载依然存在，BMS 会再次保护。",[10,251,252],{},"在充电过流或短路时，PCL 模块（并联限流器）可以把电流限制在约 10 A，而不是直接切断。多组电池并联时请保持 PCL 开启。如果设置了禁用 PCL（Disable PCL），BMS 会切断充电，约 60 s 后重试。",[14,254,256],{"id":255},"scp-延时与固件版本","SCP 延时与固件版本",[10,258,259,260,264],{},"不要在不同文件之间复制 SCP 数值。V19 及更新的固件在这里存的是一个很小的数，默认是 5，导入时超过 50 就会被拒绝。较老的 V15 文件里是 1500 µs 这样的数值。把这种文件导入到 V19 设备会失败，并提示 \"This parameter does not apply to the connected device. (Sending failure)\"（该参数不适用于已连接的设备，发送失败）。这一点已在固件 19.26 的 JK-PB2A16S20P 上验证。处理方法见",[194,261,263],{"href":262},"\u002Fguides\u002Fjk-bms-sending-failure","发送失败怎么办","。",[10,266,267],{},"因此，编辑器没有给短路保护延时和恢复时间设推荐范围。同一台设备也拒绝了 60 s 的恢复时间。请在设备上用 JK app 修改 SCP，或者保留出厂值。在 V19 上，如果 SCP 延时大于 50，编辑器会标记为错误。",[10,269,270,271,275,276,280,281,285],{},"过流和短路保护触发，以及它们前后的峰值电流，都会出现在详细日志里。请把日志加载到",[194,272,274],{"href":273},"\u002Flogs","日志分析页","并附上你的 .jkcfg，页面会标出接近你所设限值 10% 以内的峰值。",[194,277,279],{"href":278},"\u002Fguides\u002Fjk-bms-detail-log","JK BMS 详细日志","指南介绍了这项分析，",[194,282,284],{"href":283},"\u002Fguides\u002Fjk-bms-log-messages-explained","每条日志消息是什么意思","则解读消息文本。",[14,287,288],{"id":288},"常见问题",[290,291,293],"h3",{"id":292},"jk-bms-充电电流上限设多少合适","JK BMS 充电电流上限设多少合适？",[10,295,296],{},"不要超过电芯额定值和 BMS 额定值。对于 LiFePO4，0.3C 到 0.5C 比较温和，也最常见。280Ah 电池组按 0.5C 计算是 140 A。",[290,298,300],{"id":299},"ocp-延时应该长还是短","OCP 延时应该长还是短？",[10,302,303],{},"延时短保护更及时，延时长更能容忍冲击。充电建议 2 到 5 s；只有当逆变器或电机有启动冲击时，才把放电延时设长一些。",[290,305,307],{"id":306},"可以在文件里修改-scp-延时吗","可以在文件里修改 SCP 延时吗？",[10,309,310,311,264],{},"只有在你确定固件按你预期的方式存储这个值时才可以。在 V19 上该值必须小于等于 50，否则请在 JK app 里修改。文件的基础知识见 ",[194,312,314],{"href":313},"\u002Fguides\u002Fjk-bms-export-import-settings","JK BMS 设置的导出与导入",[10,316,317,321,322,324],{},[194,318,320],{"href":319},"\u002F","连接你的 BMS 或打开你的 .jkcfg","，在写入任何内容之前，在编辑器中对照型号额定值检查这些电流；也可以从",[194,323,197],{"href":196},"上的现成等级开始。",{"title":326,"searchDepth":327,"depth":327,"links":328},"",3,[329,331,332,333,334,335,336,337],{"id":16,"depth":330,"text":16},2,{"id":51,"depth":330,"text":52},{"id":189,"depth":330,"text":189},{"id":218,"depth":330,"text":219},{"id":240,"depth":330,"text":240},{"id":246,"depth":330,"text":246},{"id":255,"depth":330,"text":256},{"id":288,"depth":330,"text":288,"children":338},[339,340,341],{"id":292,"depth":327,"text":293},{"id":299,"depth":327,"text":300},{"id":306,"depth":327,"text":307},"2026-10-02","详解 JK BMS 过流保护设置：充放电 OCP 电流上限、延时、恢复时间与短路保护 SCP，附推荐范围和逆变器选型方法。","md",[346,347,348,349,350,351],"jk bms 过流保护 设置","jk bms ocp 延时","jk bms 短路保护 延时","jk bms 最大充电电流","jk bms 放电过流","保护板 过流保护 参数",{},true,"\u002Fguides\u002Fjk-bms-ocp-scp-settings",[356,357,358],"jk-bms-parameters-explained","jk-bms-detail-log","jk-bms-log-messages-explained",{"title":5,"description":343},"guides\u002Fjk-bms-ocp-scp-settings","2026-10-04","GwC8nhL8oSX-KO3AlZVglTHF2dqqzh0vahDhnVTXgyU",[364,369,373,377,380,383,387,390,394,395,399,403,407,410,414,418],{"path":365,"title":366,"description":367,"date":361,"updated":368},"\u002Fguides\u002Fjk-bms-bluetooth-browser","在浏览器中通过蓝牙修改 JK BMS 设置","在 Chrome 或 Edge 中连接 JK BMS，读取全部设置，应用预设，再按安全顺序写回并逐项回读校验。无需 JK app。",null,{"path":370,"title":371,"description":372,"date":342,"updated":361},"\u002Fguides\u002Fjk-bms-balance-settings","JK BMS 均衡设置：均衡启动电压、触发压差和均衡电流","详解 JK BMS 均衡设置：均衡启动电压、均衡触发压差、最大均衡电流和均衡开关，适用于磷酸铁锂、三元和钛酸锂。",{"path":374,"title":375,"description":376,"date":342,"updated":368},"\u002Fguides\u002Fjk-bms-cell-overcharge-protection-tripping","JK BMS 单体过充保护反复触发：原因与解决方法","JK BMS 单体过充保护每分钟触发又解除？了解充电器设得过高为何导致这种情况、如何与弱单体区分，以及怎样解决。",{"path":278,"title":378,"description":379,"date":342,"updated":361},"如何导出并读懂 JK-BMS 详细日志（Detail Log）","JK-BMS 详细日志包含什么、如何从 app 导出、如何读懂其中的事件，以及日志分析页能告诉你哪些保护动作和故障信息。",{"path":313,"title":381,"description":382,"date":342,"updated":361},"JK BMS 设置导出与导入：.jkcfg 文件完全指南","如何用 JK BMS app 导出和导入保护板设置，.jkcfg 文件里有什么，为什么手动改会损坏，以及如何在浏览器里安全编辑。",{"path":384,"title":385,"description":386,"date":342,"updated":361},"\u002Fguides\u002Fjk-bms-lifepo4-settings","磷酸铁锂 JK BMS 参数设置：8S、16S，280Ah 与 314Ah 电芯","磷酸铁锂电池组的 JK BMS 参数设置：8S 和 16S、280Ah 与 314Ah 电芯的单体电压、均衡、电流和温度推荐值，分三种损耗等级。",{"path":283,"title":388,"description":389,"date":342,"updated":368},"JK BMS 日志消息详解：Boot、Time calibration、保护","每条 JK BMS 日志消息的含义：Boot、Time calibration、APP open charge、保护触发与解除，以及 Discharge On Failed。",{"path":391,"title":392,"description":393,"date":342,"updated":361},"\u002Fguides\u002Fjk-bms-nmc-lto-settings","JK BMS 三元锂与钛酸锂设置：安全的单体参数","JK BMS 三元锂 NMC 与钛酸锂 LTO 电池组设置：单体过压、欠压、均衡、温度和倍率的三档数值，以及编辑器如何识别电芯类型。",{"path":354,"title":5,"description":343,"date":342,"updated":361},{"path":396,"title":397,"description":398,"date":342,"updated":361},"\u002Fguides\u002Fjk-bms-parameters-explained","JK BMS 参数详解：按分组逐项讲解每个设置","一篇看懂 JK BMS 参数：单体 OVP、OVPR、UVP、UVPR、均衡、SOC、RCV 与 RFV、电流和温度保护，附磷酸铁锂常用范围。",{"path":400,"title":401,"description":402,"date":342,"updated":361},"\u002Fguides\u002Fjk-bms-password","JK BMS 密码：默认密码、修改与重置指南","JK BMS 的密码其实有两个：蓝牙连接密码和设置密码。本文介绍出厂默认值、修改方法、密码无效时的排查，以及忘记密码怎么办。",{"path":404,"title":405,"description":406,"date":342,"updated":361},"\u002Fguides\u002Fjk-bms-reboots-power-events","JK BMS 重启与充电 MOS 关闭：在日志中读懂电源事件","JK BMS 重启，或充电 MOS 自己关闭？学会读懂详细日志中的 Boot 行和 MOS 状态，分清正常重启与真正的故障。",{"path":262,"title":408,"description":409,"date":342,"updated":361},"JK BMS 发送失败（Sending failure）：原因与逐步解决方法","JK BMS 导入设置时提示发送失败？了解固件拒绝参数的原因（电压顺序链、写入顺序、短路延时），并按步骤解决。",{"path":411,"title":412,"description":413,"date":342,"updated":361},"\u002Fguides\u002Fjk-bms-soc-calibration","JK BMS SOC 校准：解决电量漂移、跳变和复位问题","JK BMS SOC 校准详解：SOC 为什么会漂移或跳变，SOC-100% 电压和 SOC-0% 电压的作用，以及如何设置并重新校准电池组。",{"path":415,"title":416,"description":417,"date":342,"updated":368},"\u002Fguides\u002Fjk-bms-weak-cell-log","用 JK BMS 日志找出弱单体：触发、压差与均衡","在 JK BMS 详细日志中找出弱单体：哪节单体先触发、触发时压差有多大，以及这是均衡漂移还是单体已损坏。",{"path":419,"title":420,"description":421,"date":342,"updated":361},"\u002Fguides\u002Fjk-bms-wire-resistance","JK BMS 线阻：均衡线阻异常报警的排查与修复","JK BMS 线阻详解：均衡线阻异常报警的含义、正常数值范围、常见原因，以及如何修好一根有问题的均衡线。",1791151319712]