CN102868001B - Lithium ion cell electric quantity displaying method and lithium ion cell electric quanity displaying device - Google Patents

Lithium ion cell electric quantity displaying method and lithium ion cell electric quanity displaying device Download PDF

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CN102868001B
CN102868001B CN201210352001.3A CN201210352001A CN102868001B CN 102868001 B CN102868001 B CN 102868001B CN 201210352001 A CN201210352001 A CN 201210352001A CN 102868001 B CN102868001 B CN 102868001B
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battery
charge
discharge
current
dp
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CN102868001A (en
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黄国文
何鹏
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深圳市卓能新能源科技有限公司
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Abstract

本发明公开了一种锂离子电池电量显示方法及装置。 The present invention discloses a lithium ion battery quantity display method and apparatus. 该显示方法包括读取电池电压值U,根据锂离子电池充放电曲线得出电池初始电量cp,检测电池电流值I,根据电流值I判断电池的充放电状态,放电时,对电池电量dp和电池电压U进行二次判断,充电时,同样对电池电量dp和电池电压U及电池电流I进行二次判断。 The display method includes reading the battery voltage value U, the initial battery cp obtained lithium ion battery charge and discharge curve, detecting a battery current value I, the current value I is determined according to the charge-discharge state of the battery, discharging the battery power and dp Analyzing the secondary battery voltage U, when the charging of the same battery and a battery voltage U dp battery current I and the secondary determination. 本发明实施例的显示方法是根据电池固有的充放电特性采用对电池电量进行初判,然后对电池的电压、电流进行复判的双重判断方式,因此能够真实的反映出锂电池的充放电容量变化情况,避免电池电量跳动,防止电池过充、过放。 The display method of the embodiment of the present invention is the use of battery power for initial impression based on the intrinsic charge-discharge characteristics of the battery, and the battery voltage, current sentence double determination multiplexed manner, it is possible to reflect the true capacity of Lithium batteries changes, prevent battery bounce, prevent battery overcharge, over discharge.

Description

锂离子电池电量显示方法及装置 A lithium ion battery quantity display method and apparatus

技术领域 FIELD

[0001] 本发明涉及锂离子电池技术领域,具体涉及锂离子电池电量显示方法及装置。 [0001] The present invention relates to a lithium-ion battery technology field, particularly relates to a lithium ion battery display method and apparatus.

背景技术 Background technique

[0002] 现今市场上所拥有的锂电池电量的电量显示都是简单的采用电池电压或者简单的电池电流皇加来实现,它们都没有针对锂电池的特性去实现锂电池电量电量显示问题,导致在过程中出现以下情况: [0002] on the market today have lithium battery power display is simple use of simple battery voltage or battery current emperor Calais realize they are not going to achieve the lithium battery charge display problem for the characteristics of lithium batteries, lead in the course of the following occurs:

[0003] (I)锂电池电量电量显示跳动很大; [0003] (I) the lithium battery charge displays large jitter;

[0004] (2)锂电池电量跟真实情况出现很大偏差; [0004] (2) lithium battery large deviation occurs with the real situation;

[0005] (3)锂电池经常性过放,过充,严重影响了锂电池的寿命。 [0005] (3) lithium regular over-discharge, overcharge, seriously affecting the life of the lithium battery.

发明内容 SUMMARY

[0006] 本发明实施例提供一种锂离子电池电量显示方法,能够解决上述问题。 Embodiment [0006] The present invention provides a display method of a lithium ion battery, the above problem can be solved.

[0007] 本发明实施例提供的锂离子电池电量显示方法,包括步骤: [0007] The lithium ion battery according to an embodiment of the present invention, a display method, comprising the steps of:

[0008] A:读取电池电压值U,根据锂离子电池充放电曲线得出电池初始电量cp,令初始电量cp =当前电量dp ; [0008] A: read the battery voltage value U, lithium ion battery charge and discharge curve obtained initial battery cp, so that the initial current amount of power consumption cp = DP;

[0009] B:检测电池电流值I,根据电流值I判断电池的充放电状态,电池放电时,对放电时间Tf进行计时,进入步骤C ;电池充电时,对充电时间Tc进行计时,进入步骤D ; [0009] B: detecting a battery current value I, the current value I is determined battery charge and discharge state, the battery is discharged, discharge time Tf for timing, proceeds to step C; charge the battery, the charging time Tc for timing, proceeds to step D;

[0010] C:赋予当前电量dp =上一次的当前电量dp-电池电流值I*放电时间Tf,清零放电时间Tf ;判断是否当前电量dp ( 0,如果否,则返回步骤B,如果是,则进入步骤E ; [0010] C: dp = imparting a charge current on the current battery charge current value I * dp- time Tf of the discharge, the discharge time Tf of the clearing; determining whether the current charge dp (0, if not, returns to step B, and if , step E;

[0011] D:赋予当前电量dp =上一次的当前电量dp+电池电流值I*充电时间Tc ;判断是否当前电量dp <电池真实电量dz,如果是,则返回步骤B,如果否,则进入步骤F ; [0011] D: imparting current charge dp = time on the current charge dp + battery current value I * charge time Tc of the; determining whether the current charge dp <Battery real power DZ, if so, returns to step B, and if not, the process proceeds to step F;

[0012] E:判断是否电池电压U <电池工作下限电压Ux,如果否,则返回步骤B;如果是,则放电完毕,显示电池电量为0% ; [0012] E: judging whether the battery voltage U <lower limit battery voltage Ux, if not, returns to step B; if yes, discharged, the battery power is 0%;

[0013] F:判断是否电池电压U彡4.2V且电池电流值I < 100mA,如果否,则返回步骤B,如果是,则充电完毕,显示电池电量为100%。 [0013] F: U San determines whether the battery voltage 4.2V, and the battery current value I <100mA, if not, returns to step B, and if so, then the charging is completed, the battery power is 100%.

[0014] 优选地,所述步骤B中,还包括:当电池无充放电时,重新返回:检测电池电流值I,根据电流值I判断电池的充放电状态。 [0014] Preferably, the step B, further comprising: when the battery is charged and discharged no, return to: detecting a battery current value I, the current value I is determined according to the charge and discharge state of the battery.

[0015] 优选地,所述步骤E中还包括:当电池电压U〉电池工作下限电压Ux时,显示电池电量为I %,并返回步骤B。 [0015] Preferably, the step E further comprises: when the battery voltage U> the lower limit battery voltage Ux, the battery power of I%, and returns to step B.

[0016] 优选地,所述电池工作下限电压Ux为3.1V。 [0016] Preferably, the lower limit battery voltage Ux is 3.1V.

[0017] 本发明实施例还提供了一种锂离子电池电量显示装置,包括: [0017] Embodiments of the present invention further provides a lithium ion battery display apparatus, comprising:

[0018] 初始电量检测单元,用于读取电池电压值U,根据锂离子电池充放电曲线得出电池初始电量cp,令初始电量cp =当前电量dp ; [0018] Initial capacity detecting means, for reading the battery voltage value U, lithium ion battery charge and discharge curve obtained initial battery cp, so that the initial current amount of power consumption cp = DP;

[0019] 充放电状态判断单元,用于检测电池电流值I,根据电流值I判断电池的充放电状态,电池放电时,对放电时间Tf进行计时,进入放电电量检测单元;电池充电时,对充电时间Tc进行计时,进入充电电量检测单元; [0019] The charge and discharge state determining means for detecting a battery current value I, the charge-discharge state of the battery current value I is determined, as the battery discharges, discharge time Tf is timed to enter the discharge capacity detecting unit; battery is charging, for charging time Tc clocked into a charging power detection means;

[0020] 放电电量检测单元,用于赋予当前电量dp =上一次的当前电量dp-电池电流值I*放电时间Tf,清零放电时间Tf ;判断是否当前电量dp ( 0,如果否,则返回充放电状态判断单元,如果是,则进入放电显示单元; [0020] The discharge capacity detection unit for imparting a dp = charge current on the current battery charge current value I * dp- time Tf of the discharge, the discharge time Tf of the clearing; determining whether the current charge dp (0, if not, returns charge and discharge state determination unit, and if so, the process proceeds to discharge the display unit;

[0021] 充电电量检测单元,用于赋予当前电量dp =上一次的当前电量dp+电池电流值I*充电时间Tc;判断是否当前电量dp <电池真实电量dz,如果是,则返回充放电状态判断单元,如果否,则进入充电显示单元; [0021] The charging capacity detecting means for imparting to the current charge dp = time on the current charge dp + battery current value I * charge time Tc of the; determining whether the current charge dp <Battery real power DZ, if so, returns the charging and discharging state determination It means, if not, the process proceeds to charge the display unit;

[0022] 放电显示单元,用于判断是否电池电压U <电池工作下限电压Ux,如果否,则返回充放电状态判断单元;如果是,则放电完毕,显示电池电量为0% ; [0022] The discharge display unit, for determining whether the battery voltage U <lower limit battery voltage Ux, if not, returns charge and discharge state judgment unit; if yes, discharged, the battery power is 0%;

[0023] 充电显示单元,用于判断是否电池电压U彡4.2V且电池电流值I < 100mA,如果否,则返回充放电状态判断单元,如果是,则充电完毕,显示电池电量为100%。 [0023] The charge display unit configured to determine whether the battery voltage U and the battery current value 4.2V San I <100mA, if not, return to the charge-discharge state judgment unit, if it is, then the charging is completed, the battery power is 100%.

[0024] 优选地,所述充放电状态判断单元还包括:无充放电处理单元,用于当电池无充放电时,重新返回:检测电池电流值I,根据电流值I判断电池的充放电状态。 [0024] Preferably, the charge and discharge state determination unit further comprises: non-discharge processing unit for charge and discharge when the battery no, return to: detecting a battery current value I, the current value I is determined according to the charge-discharge state of the battery .

[0025] 优选地,所述放电显示单元还包括:低电量显示单元,用于当电池电压U〉电池工作下限电压Ux时,显示电池电量为1%,并返回充放电状态判断单元。 [0025] Preferably, the discharge display unit further comprises: a low power display means for, when the battery voltage U> the lower limit battery voltage Ux, the battery power is 1%, and returns charge and discharge state determination unit.

[0026] 上述技术方案可以看出,由于本发明实施例的显示方法是根据电池固有的充放电特性采用对电池电量进行初判,然后对电池的电压、电流进行复判的双重判断方式,因此能够真实的反映出锂电池的充放电容量变化情况,避免电池电量跳动,防止电池过充、过放。 [0026] As can be seen above technical solution, since the display method according to the embodiment of the present invention is the use of battery power for initial impression based on the intrinsic charge-discharge characteristics of the battery, and the battery voltage, the current mode is determined double complex sentence, so lithium can truly reflect changes in charge-discharge capacity, prevent battery runout, to prevent battery overcharge, over-discharge.

附图说明 BRIEF DESCRIPTION

[0027] 为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其它的附图。 [0027] In order to more clearly illustrate the technical solutions in the embodiments or the prior art embodiment of the present invention, briefly introduced hereinafter, embodiments are described below in the accompanying drawings or described in the prior art needed to be used in describing the embodiments the drawings are only some embodiments of the present invention, those of ordinary skill in the art is concerned, without creative efforts, can derive from these drawings other drawings.

[0028] 图1是本发明实施例1中锂离子电池电量显示方法的流程图; [0028] Example 1 FIG. 1 is a lithium ion battery is a flowchart of a method embodiment of the present invention is a display;

[0029] 图2是本发明实施例1中锂离子电池充放电曲线图; [0029] FIG. 2 is a graph showing charge and discharge lithium ion battery in Example 1 of the present embodiment of the invention;

[0030] 图3是本发明实施例2中锂离子电池在无充放电状态时的流程图。 [0030] FIG. 3 is a flowchart of the embodiment 2 in the absence of a lithium ion battery charge and discharge state of the embodiment of the present invention.

具体实施方式 Detailed ways

[0031] 下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。 [0031] below in conjunction with the present invention in the accompanying drawings, technical solutions of embodiments of the present invention are clearly and completely described, obviously, the described embodiments are merely part of embodiments of the present invention, but not all embodiments example. 基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。 Based on the embodiments of the present invention, those of ordinary skill in the art without making all of the other embodiments given herein without creative efforts fall within the scope of the present invention.

[0032] 实施例1: [0032] Example 1:

[0033] 本发明实施例提供一种锂离子电池电量显示方法,如图1所示,该显示方法包括如下步骤: [0033] Example embodiments provide a display method for a lithium ion battery according to the present invention, as illustrated, the display method comprising the steps of 1:

[0034] 步骤101,读取电池电压值U,根据锂离子电池充放电曲线得出电池初始电量cp。 [0034] Step 101, the read battery voltage value U, the initial battery cp obtained lithium ion battery charge and discharge curve.

[0035] 本步骤中,锂离子电池充放电曲线是通过锂离子电池的固有特征得出,但是为了保证锂离子电池充放电曲线更加接近实际情况,可以对锂离子电池进行多次测量,根据多次测量值绘制出锂离子充放电曲线,如图2所示,是本步骤中所述锂离子电池充放电曲线图,其中位于上方的一条曲线为电压曲线,位于下方的一条曲线为电流曲线。 [0035] In this step, the charge-discharge curve of the lithium ion battery is obtained by an inherent feature of a lithium ion battery obtained, but in order to ensure that the charge-discharge curve of the lithium ion battery is closer to the actual situation, may be a plurality of measurements of a lithium ion battery, a multi- measured values ​​plotted charge and discharge curves of lithium ions, as shown in FIG. 2, this step is the lithium ion battery charge and discharge curve, which is located in an upper curve of the voltage curve, a curve positioned below the current curve. 由该曲线图我们可以看到锂离子电池电压、电流的对应关系,因此,在读取电池电压值U之后,通过图2中所示的锂离子电池充放电曲线的特性可以得出电池初始电量cp,令初始电量cp =当前电量dp ο From this graph we can see the correspondence relationship lithium ion battery voltage and current, and therefore, after reading the battery voltage value U, the charge-discharge curves of the lithium ion battery shown by FIG. 2 in initial battery characteristics may be obtained cp, so that the initial charge cp = current charge dp ο

[0036] 步骤102,检测电池电流值I,根据电流值I判断电池的充放电状态。 [0036] Step 102, detecting a battery current value I, the current value I is determined according to the charge and discharge state of the battery.

[0037] 本步骤中,检测电池电流值I,本领域技术人员可以通过电流检测仪或者自行搭建电流检测电路,根据电流值I的大小方向确定电池是处于充电状态还是放电状态,因此,不再赘述具体的根据电流值I判断电池的充放电状态的电路结构。 [0037] In this step, detecting a battery current value I, the skilled in the art can build on their own or in the current detection circuit by the current detector, determines whether the battery is in a charging state or discharging state according to the magnitude of the direction of the current value I, therefore, no longer the specific circuit configuration of repeated charging and discharging state of the battery current value I is determined. 本步骤中,当电池处于放电状态时,则进入到步骤103做进一步处理;当电池处于充电状态时,则进入到步骤104做进一步处理。 In this step, when the battery in a discharged state, the process proceeds to step 103 for further processing; when the battery is charging, the process proceeds to step 104 for further processing.

[0038] 步骤103,对放电时间Tf进行计时。 [0038] Step 103, the discharge time for timing Tf. 一旦在步骤102中判断出电池处于放电状态,贝IJ需要立即开始对放电时间Tf进行计时,可以理解的是,放电时间Tf在初始化的过程中是清零的,因此,在步骤105中赋予当前电量dp =上一次的当前电量dp-电池电流值I*放电时间Tf,清零放电时间Tf。 Once it is determined that the battery is in a discharging state, in step 102, IJ shellfish need to start discharge time Tf timing immediately, be appreciated that the discharge time Tf is cleared in the initialization process, therefore, given at step 105 the current dp = charge on a charge current value I * dp- battery current discharge time Tf, discharge time is cleared Tf. 可以看出,每次当前电量dp进行更新,放电时间Tf都会被清零,使得电池在放电状态下,当前电量dp保持实时状态。 As can be seen, each time the current update quantity dp, discharge time Tf will be cleared, so that the battery in the discharged state, the current charge state dp in real time.

[0039] 在放电状态下,随着放电时间Tf的累积,当前电量dp会逐渐减小,因此,需要防止电池的过放,而在步骤107中,则判断是否当前电量dp小于或等于0,由于之前的步骤102中对电池的初始电量cp是通过锂离子电池的固有特性曲线来获取的,因此,针对不同的电池可能会存在一些偏差,因此,在当前电量dp =上一次的当前电量dp-电池电流值*放电时间Tf的条件下,当前电量dp会出现小于O和等于O的情况,由于在某个阶段电池可能会停止放电而转为充电状态,或者出现电池负载电流突然增加(手机通话或拍照阶段)导致电量跳动,因此,当步骤107中判断出当前电量dp大于O时,则说明电池的电量未泄放完毕,需要返回到步骤102中再次判断电池的充放电状态,对当前电量dp进一步更新;如果步骤107中判断出当前电量dp小于或等于0,则说明电池的电量接近耗尽状态,但 [0039] in the discharged state, with the accumulation discharge time Tf, the current charge dp will gradually decrease, therefore, necessary to prevent over-discharge of the battery, and in step 107, it is determined whether the current power is less than or equal to 0 dp, due to the previous step 102, the initial charge cp cells is acquired by an inherent characteristic of lithium ion batteries, and therefore, there may be some deviations for different batteries, thus, a current amount of power dp in charge dp = the current - battery current * discharge time under the condition of Tf, the current charge will be smaller than dp equal to O and O, since the battery may stop some stage discharge into the charged state, the battery or sudden increase in the load current (the phone photographing call or phase) cause the low jitter, and therefore, when the step 107 determines that the charge current is greater than the dp O, then the battery power is not complete relief, the need to return to the charging and discharging state of the battery is determined in step 102 again, the current dp further updated amount; if it is determined in step 107 that the current charge dp less than or equal to 0, then the state of the battery power is nearly exhausted, but 此时并不能完全断定电池就已经放电完毕,因为还存在上述的电量跳动的情况,因此还必须做进一步的处理,即步骤109对当前电量dp做进一步的复判:判断是否电池电压U小于电池工作下限电压Ux。 At this time can not completely determine the battery has been discharged, because there is the above power beating, it must also be further processed, i.e., step 109 for further determination of the current charge of the complex dp: determining whether the battery is less than the battery voltage U the minimum operating voltage Ux. 电池工作下限电压Ux也是锂离子电池的一个固有特性,从电池充放电特性曲线中可以看出电池工作下限电压Ux是保证电池正常工作的一个电压值,如果电池长期在电池工作下限电压Ux以下工作,会严重影响电池的工作寿命,而电池工作下限电压Ux在3.1V左右,根据个别锂离子电池的特性差异,电池工作下限电压会为3.0V〜3.2V,而本发明实施例中电池工作下限电压取3.1V,能够符合电量检测要求。 The lower limit of battery voltage Ux is an inherent characteristic of the lithium-ion battery, the battery charge and discharge characteristics can be seen that the lower limit battery voltage is a voltage value Ux ensure the normal operation of the battery, if the battery in the long-term cell operation limit voltage Ux less , will seriously affect the working life of the battery, and the battery is about 3.1V limit voltage Ux, the lithium ion battery according to the characteristics of individual differences, the lower limit battery voltage is 3.0V~3.2V, the lower limit battery embodiment of the present invention and Examples take voltage 3.1V, power detection can meet the requirements.

[0040] 在步骤109中,如果电池电压U大于或等于电池工作下限电压Ux,即U彡3.1V,则说明电池的电量发生了跳动,当前电量并未真正的泄放至0,因此还需要重新返回到步骤102中做出进一步判断。 [0040] In step 109, if the battery voltage U is greater than or equal to the lower limit battery voltage Ux, i.e. U San 3.1V, then the battery power beating occurred, not really bleed current charge to 0, it is also necessary return to step 102 to make a further determination.

[0041] 而在本发明实施例中,为了更加精准的实时显示出当前电量dp的数值,当步骤109判断出电池电压U大于或等于电池工作下限电压Ux时,进入到步骤113:显示电量为1%,然后再返回到步骤102中进行进一步判断电池充放电状态。 When [0041] In the embodiment of the invention, for a more accurate real-time display the current value of power dp when the step 109 determines that the battery voltage U is greater than or equal to the battery limit voltage Ux, proceeds to step 113: display power is 1%, then returns to step 102 for further judgment of the battery charge and discharge state.

[0042] 如果步骤109中,电池电压U小于电池工作下限电压Ux,则经过电量判断和电压复判的双重标准后,可以断定电池的当前电量dp必然已经泄放干净,因此,进入到步骤111中:放电完毕,显示电池电量为0%。 [0042] If in step 109, the battery voltage U is less than the lower limit battery voltage Ux, the double standard quantity is determined after the re-judgment voltage, current consumption can be concluded that the battery must have been dp bleed clean, thus, proceeds to step 111 in: discharged, the battery power is 0%.

[0043] 至此,电池在放电状态下的显示步骤已经介绍完毕,接下来介绍电池在充电状态下的显示步骤。 [0043] Thus, the step of displaying the battery in the discharged state has been introduced completed, the next step of displaying introduced in the charged state of the battery.

[0044] 步骤104,对充电时间Tc进行计时。 [0044] Step 104, the charging time Tc clocked. 一旦在步骤102中判断出电池处于充电状态,则需要立即开始对充电时间Tf进行计时,可以理解的是,充电时间Tc在初始化的过程中也是清零的,因此,在步骤106中赋予当前电量dp =上一次的当前电量dp+电池电流值I*充电时间Tc,清零充电时间Tc。 Once it is determined that the battery in a charged state at step 102, it is necessary to start charging immediately counting time Tf, it is understood that the charging time Tc in the initialization process is cleared, and therefore, in step 106 the current charge imparting a dp = dp + on the current battery charge current value I * charge time Tc, charging time is cleared Tc. 可以看出,每次当前电量dp进行更新,充电时间Tc都会被清零,使得电池在充电状态下,当前电量dp保持实时状态。 As can be seen, each time the current charge dp is updated, the charging time Tc will be cleared, so that the battery in a charged state, the current state of charge in real time dp.

[0045] 在充电状态下,随着充电时间Tc的累积,当前电量dp会逐渐增大,因此,需要防止电池的过充,因此步骤108中会判断是否当前电量dp小于电池真实电量dz,电池真实电量dz是电池本身固有的参数值,因此当前电量dp小于电池真实电量dz时,则说明电池尚未充满,因此返回到步骤102做出进一步判断。 [0045] In the charging state, with the charge accumulation time Tc, current charge dp will gradually increase, and therefore, necessary to prevent overcharge of the battery, so step 108 determines whether the current real power less than the battery charge dp DZ, battery dz real power is inherent values ​​for the cell, so the current battery power is less than the real power dp dz, then the battery is not full, the flow returns to step 102 to make a further determination. 如果当前电量dp大于或等于电池真实电量dz时,则说明电池已经接近充满,但此时并不能完全断定电池就已经充电完毕,因为还存在上述的电量跳动的情况,因此还必须做进一步的处理,即步骤110对当前电量dp做进一步的复判:判断是否电池电压U彡4.2V且电池电流值I < 100mA,在步骤110中,如果电池电压U小于4.2V且电池电流I大于或等于100mA,则说明电池的电量发生了跳动,当前电量并未真正的充满至100%,因此还需要重新返回到步骤102中做出进一步判断。 If the current battery charge dp equal to or greater than the real power DZ, then the battery is nearly full, but this time can not completely determine the battery has been fully charged, since there is the above power beating, it must also be further processed , i.e., step 110 of the current charge dp made further complex sentence: determining whether the battery voltage U and the battery current value 4.2V San I <100mA, at step 110, if the battery voltage is less than 4.2V U and the battery current I is greater than or equal to 100mA , then the battery power beating occurred, not really full current charge to 100%, it is also necessary to make a further determination to return to step 102.

[0046] 如果步骤110中,电池电压U大于或等于4.2V且电池电流I小于100mA,则经过电量判断和电压、电流复判的双重标准后,可以断定电池的当前电量dp必然已经充满,因此,进入到步骤112中:充电完毕,显示电池电量为100%。 [0046] If in step 110, is greater than or equal to the battery voltage U and the battery current I is less than 4.2V 100mA, the voltage through the power determination, the determination of the complex double standard current, the current can be concluded that the battery power has been filled dp inevitable, so proceeds to step 112: fully charged, the battery power is 100%.

[0047] 当然,可以理解的是,本发明实施例中显示0%或显示100%可以采用“放电完毕”或“充电完毕”来替代,此处只是显示形式上的变化,因此仍属于本发明的保护范围内。 [0047] Of course, it is appreciated that the display shows 100% or 0% can be "discharged" or "fully charged" instead of using the embodiment of the present invention, but here show changes in form, thus still belongs to the present invention within the scope of protection.

[0048] 实施例2: [0048] Example 2:

[0049] 本发明实施例中增加了电池无充放电状态时的显示步骤,如图3所示,当步骤102检测到电池无充放电时,重新返回步骤102:检测电池电流值I,根据电流值I判断电池的充放电状态。 [0049] The embodiments of the present invention adds the step of displaying the battery when no charge and discharge state, shown in Figure 3, when step 102 detects the charge and discharge of the battery no, return to Step 102: detecting a battery current value I, according to the current I value of charge and discharge state of the battery is determined. 在本发明实施例中能够及时对任何状态下的电池进行检测,做出实时显示。 The battery can be timely detected at any state in the embodiment of the present invention, to make real-time display. 对于本发明实施例中的其他步骤则可以参考上述实施例的介绍,此处不在一一赘述。 For other steps in the embodiment of the present invention may be described with reference to the embodiments described above, not enumerate herein.

[0050] 实施例3: [0050] Example 3:

[0051] 本发明实施例提供了一种锂离子电池电量显示装置,包括: [0051] The embodiment provides a lithium ion battery according to the present invention, a display apparatus, comprising:

[0052] 初始电量检测单元,用于读取电池电压值U,根据锂离子电池充放电曲线得出电池初始电量cp,令初始电量cp =当前电量dp ; [0052] The initial capacity detecting means, for reading the battery voltage value U, lithium ion battery charge and discharge curve obtained initial battery cp, so that the initial current amount of power consumption cp = DP;

[0053] 充放电状态判断单元,用于检测电池电流值I,根据电流值I判断电池的充放电状态,电池放电时,对放电时间Tf进行计时,进入放电电量检测单元;电池充电时,对充电时间Tc进行计时,进入充电电量检测单元; [0053] The charge and discharge state determining means for detecting a battery current value I, the charge-discharge state of the battery current value I is determined, as the battery discharges, discharge time Tf is timed to enter the discharge capacity detecting unit; battery is charging, for charging time Tc clocked into a charging power detection means;

[0054] 放电电量检测单元,用于赋予当前电量dp =上一次的当前电量dp-电池电流值I*放电时间Tf,清零放电时间Tf ;判断是否当前电量dp ( 0,如果否,则返回充放电状态判断单元,如果是,则进入放电显示单元; [0054] The discharge capacity detection unit for imparting a dp = charge current on the current battery charge current value I * dp- time Tf of the discharge, the discharge time Tf of the clearing; determining whether the current charge dp (0, if not, returns charge and discharge state determination unit, and if so, the process proceeds to discharge the display unit;

[0055] 充电电量检测单元,用于赋予当前电量dp =上一次的当前电量dp+电池电流值I*充电时间Tc;判断是否当前电量dp <电池真实电量dz,如果是,则返回充放电状态判断单元,如果否,则进入充电显示单元; [0055] The charging capacity detecting means for imparting to the current charge dp = time on the current charge dp + battery current value I * charge time Tc of the; determining whether the current charge dp <Battery real power DZ, if so, returns the charging and discharging state determination It means, if not, the process proceeds to charge the display unit;

[0056] 放电显示单元,用于判断是否电池电压U <电池工作下限电压Ux,如果否,则返回充放电状态判断单元;如果是,则放电完毕,显示电池电量为0% ; [0056] The discharge display unit, for determining whether the battery voltage U <lower limit battery voltage Ux, if not, returns charge and discharge state judgment unit; if yes, discharged, the battery power is 0%;

[0057] 充电显示单元,用于判断是否电池电压U彡4.2V且电池电流值I < 100mA,如果否,则返回充放电状态判断单元,如果是,则充电完毕,显示电池电量为100%。 [0057] The charge display unit configured to determine whether the battery voltage U and the battery current value 4.2V San I <100mA, if not, return to the charge-discharge state judgment unit, if it is, then the charging is completed, the battery power is 100%.

[0058] 在另一个实施例中,所述充放电状态判断单元还包括:无充放电处理单元,用于当电池无充放电时,重新返回:检测电池电流值I,根据电流值I判断电池的充放电状态。 [0058] In another embodiment, the charge and discharge state determination unit further comprises: non-discharge processing unit for charge and discharge when the battery no, return to: detecting a battery current value I, the current value I is determined according to the battery the charge and discharge state.

[0059] 在又一个实施例中,所述放电显示单元还包括:低电量显示单元,用于当电池电压U〉电池工作下限电压Ux时,显示电池电量为1%,并返回充放电状态判断单元。 [0059] In a further embodiment, the discharge display unit further comprises: a low power display means for, when the battery voltage U> the lower limit battery voltage Ux, the battery power is 1%, and charging and discharging state returns Analyzing unit.

[0060] 需要说明的是,上述装置和系统内的各单元之间的信息交互、执行过程等内容,由于与本发明方法实施例基于同一构思,具体内容可参见本发明方法实施例中的叙述,此处不再赘述。 [0060] Incidentally, the information interaction between the device and the units in the system, execution process, since the method embodiments of the present invention based on the same concept, reference may be made to the present invention, the method described in the embodiment not repeat them here.

[0061] 本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成,该程序可以存储于一计算机可读存储介质中,存储介质可以包括:只读存储器(ROM,Read Only Memory)、随机存取存储器(RAM,RandomAccess Memory)、磁盘或光盘等。 [0061] Those of ordinary skill in the art can appreciate that various embodiments of the method of the above-described embodiments all or part of the steps may be relevant hardware instructed by a program, the program may be stored in a computer-readable storage medium, the storage medium It may include: a read only memory (ROM, Read Only memory), a random access memory (RAM, RandomAccess memory), a magnetic disk or optical disk.

[0062] 以上对本发明实施例所提供的锂离子电池电量显示方法及装置进行了详细介绍,本文中应用了具体个例对本发明的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方法及其核心思想;同时,对于本领域的一般技术人员,依据本发明的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。 [0062] The above lithium ion battery embodiment provided by embodiments of the present invention shows a method and apparatus are described in detail herein through specific examples of the principles of the invention and embodiments are set forth in description of the above embodiment except for help understand the method and core ideas of the present invention; the same time, for those of ordinary skill in the art, according to the idea of ​​the present invention, there are changes in the specific embodiments and application scope of the place, of the specification content It should not be construed as limiting the present invention.

Claims (7)

1.锂离子电池电量显示方法,其特征在于,包括步骤: A:读取电池电压值U,根据锂离子电池充放电曲线得出电池初始电量cp,令初始电量cp =当前电量dp ; B:检测电池电流值I,根据电流值I判断电池的充放电状态,电池放电时,对放电时间Tf进行计时,进入步骤C ;电池充电时,对充电时间Tc进行计时,进入步骤D ; C:赋予当前电量dp =上一次的当前电量dp-电池电流值I*放电时间Tf,清零放电时间Tf ;判断是否当前电量dp ( O,如果否,则返回步骤B,如果是,则进入步骤E ; D:赋予当前电量dp =上一次的当前电量dp+电池电流值I*充电时间Tc,清零放电时间Tf ;判断是否当前电量dp <电池真实电量dz,如果是,则返回步骤B,如果否,则进入步骤F ; E:判断是否电池电压U <电池工作下限电压Ux,如果否,则返回步骤B;如果是,则放电完毕,显示电池电量为O % ; F:判断是否电池电 A lithium-ion battery display method, comprising the steps of: A: reading battery voltage value U, lithium ion battery charge and discharge curve obtained initial battery cp, so that the initial current amount of power consumption cp = dp; B: detecting a battery current value I, the current value charge and discharge state I determine the battery, the battery discharges, discharge time Tf for timing, proceeds to step C; charge the battery, the charging time Tc clocked proceeds to step D; C: imparting dp = current charge charge current on the primary battery current value I * dp- time Tf of the discharge, the discharge time Tf of the clearing; determining whether the current amount dp (O, if not, returns to step B, and if so, the process proceeds to step E; D: imparting current charge dp = time on the current charge dp + battery current value I * charge time Tc of the, cleared the discharge time Tf of the; determining whether the current charge dp <battery real power DZ, if so, returns to step B, and if not, proceeds to step F; E: determining whether the battery voltage U <lower limit battery voltage Ux, if not, returns to step B; if yes, discharged, the battery power is O%; F: determining whether the battery U彡4.2V且电池电流值I < 100mA,如果否,则返回步骤B,如果是,则充电完毕,显示电池电量为100%。 San 4.2V U and the battery current value I <100mA, if not, returns to step B, and if so, then the charging is completed, the battery power is 100%.
2.如权利要求1所述的锂离子电池电量显示方法,其特征在于,所述步骤B中,还包括:当电池无充放电时,重新返回:检测电池电流值I,根据电流值I判断电池的充放电状态。 2. The lithium ion battery of the display method of claim 1, wherein the step B, further comprising: when the battery is charged and discharged no, return to: detecting a battery current value I, the current value I is determined according to charging and discharging state of the battery.
3.如权利要求1或2所述的锂离子电池电量显示方法,其特征在于,所述步骤E中还包括:当电池电压U〉电池工作下限电压Ux时,显示电池电量为1%,并返回步骤B。 The lithium-ion battery or the display method of claim 12, wherein said step E further comprises: when the battery voltage U> the lower limit battery voltage Ux, the battery power is 1%, and return to step B.
4.如权利要求1或2所述的锂离子电池电量显示方法,其特征在于:所述电池工作下限电压Ux为3.1V。 The lithium-ion battery or the display method of claim 12, wherein: the lower limit battery voltage Ux is 3.1V.
5.锂离子电池电量显示装置,其特征在于,包括: 初始电量检测单元,用于读取电池电压值U,根据锂离子电池充放电曲线得出电池初始电量cp,令初始电量cp =当前电量dp ; 充放电状态判断单元,用于检测电池电流值I,根据电流值I判断电池的充放电状态,电池放电时,对放电时间Tf进行计时,进入放电电量检测单元;电池充电时,对充电时间Tc进行计时,进入充电电量检测单元; 放电电量检测单元,用于赋予当前电量dp =上一次的当前电量dp-电池电流值I*放电时间Tf,清零放电时间Tf ;判断是否当前电量dp ( 0,如果否,则返回充放电状态判断单元,如果是,则进入放电显示单元; 充电电量检测单元,用于赋予当前电量dp =上一次的电量dp+电池电流值I*充电时间Tc ;判断是否当前电量dp <电池真实电量dz,如果是,则返回充放电状态判断单元,如果否,则进入 The lithium ion battery display apparatus comprising: an initial capacity detecting means, for reading the battery voltage value U, lithium ion battery charge and discharge curve obtained initial battery cp, so that the initial current amount of power consumption cp = DP; charge and discharge state determining means for detecting a battery current value I, I determine the battery state of charge and discharge, the battery is discharged, the discharge time Tf of the current value clocked into the discharge capacity detecting unit; charge the battery, the charging time Tc clocked into the charging capacity detecting unit; discharge power detection unit for imparting dp = current charge charge current on the primary battery current value I * dp- time Tf of the discharge, the discharge time Tf of the clearing; determining whether the current charge dp (0, if not, return to the charge-discharge state judgment unit, and if so, the process proceeds to discharge the display unit; the charging amount detecting means for imparting to the current charge dp = once the charge dp + battery current value I * charge time Tc of the; Analyzing whether the current charge dp <true battery power DZ, if so, returns the charge and discharge state determination unit, if NO, the process proceeds 电显示单元; 放电显示单元,用于判断是否电池电压U <电池工作下限电压Ux,如果否,则返回充放电状态判断单元;如果是,则放电完毕,显示电池电量为0% ; 充电显示单元,用于判断是否电池电压U彡4.2V且电池电流值I < 100mA,如果否,则返回充放电状态判断单元,如果是,则充电完毕,显示电池电量为100%。 Electrical display unit; discharge display unit, for determining whether the battery voltage U <lower limit battery voltage Ux, if not, returns charge and discharge state judgment unit; if yes, discharged, the battery power is 0%; charging display unit , for determining whether the battery voltage U and the battery current value 4.2V San I <100mA, if not, return to the charge-discharge state judgment unit, if it is, then the charging is completed, the battery power is 100%.
6.如权利要求5所述的锂离子电池电量显示装置,其特征在于,所述充放电状态判断单元还包括:无充放电处理单元,用于当电池无充放电时,重新返回:检测电池电流值I,根据电流值I判断电池的充放电状态。 The lithium-ion battery as claimed in claim 5, wherein the display device, characterized in that the charge and discharge state determination unit further comprises: non-discharge processing unit for charge and discharge when the battery no, return to: detecting a battery current value I, the current value I is determined according to the charge and discharge state of the battery.
7.如权利要求5或6所述的锂离子电池电量显示装置,其特征在于,所述放电显示单元还包括:低电量显示单元,用于当电池电压U〉电池工作下限电压Ux时,显示电池电量为I %,并返回充放电状态判断单元。 The lithium ion battery of claim 5 or claim 6 display apparatus, wherein the discharge display unit further comprises: a low power display means for, when the battery voltage U> the lower limit battery voltage Ux, the display battery of I%, and returns charge and discharge state determination unit.
CN201210352001.3A 2012-09-20 2012-09-20 Lithium ion cell electric quantity displaying method and lithium ion cell electric quanity displaying device CN102868001B (en)

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