CN105006851A - Lithium battery management system and control method thereof - Google Patents
Lithium battery management system and control method thereof Download PDFInfo
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- CN105006851A CN105006851A CN201510195725.5A CN201510195725A CN105006851A CN 105006851 A CN105006851 A CN 105006851A CN 201510195725 A CN201510195725 A CN 201510195725A CN 105006851 A CN105006851 A CN 105006851A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical Kinetics & Catalysis (AREA)
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
本发明公开了一种锂电池管理系统及其控制方法，其包括用于提供动力的由若干锂电芯组成的电池组；以及用于控制所述电池组输出电流导通或断开的电池包输出开关，所述电池包输出开关为常开型开关；以及用于控制所述电池包输出开关开启或闭合的电池管理系统控制单元；以及与所述电池包输出开关并联设置的输出电阻。本发明通过将具有所述锂电池管理系统的电池包与外接设备的接入或者断开来实现锂电池管理系统的开启或者关闭，在用户操作外接设备时即实现了现有技术中的专用开关的功能，具有降低成本、操作方便等有益效果。
The invention discloses a lithium battery management system and a control method thereof, which includes a battery pack composed of several lithium batteries for providing power; and a battery pack output for controlling the conduction or disconnection of the output current of the battery pack A switch, the battery pack output switch is a normally open switch; and a battery management system control unit used to control the battery pack output switch to open or close; and an output resistor arranged in parallel with the battery pack output switch. The present invention realizes the opening or closing of the lithium battery management system by connecting or disconnecting the battery pack with the lithium battery management system and the external device, and realizes the special switch in the prior art when the user operates the external device The function has beneficial effects such as cost reduction and convenient operation.
Description
技术领域 technical field
本发明涉及到一种锂电池管理系统及其控制方法，尤其涉及一种用于园林工具、电动工具用的具有操作简单、低功耗的锂电池管理系统及其控制方法。 The invention relates to a lithium battery management system and a control method thereof, in particular to a lithium battery management system with simple operation and low power consumption for garden tools and electric tools and a control method thereof.
背景技术 Background technique
目前，市面上的很多锂电池管理系统在非工作状态时为降低功耗须完全关闭自身电路，因而在使用时用户需要先打开电池组上的专用启动开关，然后才能正常使用外接设备，所述外接设备可以是园林工具或者电动工具。由于上述锂电池管理系统，需要在电池组上设置专用开关以实现启闭，操作复杂，且成本较高。 At present, many lithium battery management systems on the market must completely shut down their own circuits in order to reduce power consumption when they are not working. Therefore, the user needs to turn on the special start switch on the battery pack before using the external equipment normally. The external device can be a garden tool or a power tool. Due to the above-mentioned lithium battery management system, a special switch needs to be set on the battery pack to realize opening and closing, and the operation is complicated and the cost is high.
发明内容 Contents of the invention
为解决上述技术问题，本发明提供一种操作简单、低功耗的锂电池管理系统及其控制方法。 In order to solve the above technical problems, the present invention provides a lithium battery management system with simple operation and low power consumption and a control method thereof.
所述锂电池管理系统采用技术方案为：一种锂电池管理系统，包括用于提供动力的由若干锂电芯组成的电池组；以及用于控制所述电池组输出电流导通或断开的电池包输出开关，所述电池包输出开关为常开型开关；以及用于控制所述电池包输出开关开启或闭合的电池管理系统控制单元；以及与所述电池包输出开关并联设置的输出电阻。 The technical solution adopted by the lithium battery management system is: a lithium battery management system, including a battery pack composed of several lithium batteries for providing power; and a battery pack for controlling the output current of the battery pack to be on or off A pack output switch, the battery pack output switch is a normally open switch; and a battery management system control unit for controlling the opening or closing of the battery pack output switch; and an output resistor arranged in parallel with the battery pack output switch.
优选的，所述输出电阻采用阻值为千欧级的电阻。 Preferably, the output resistor adopts a resistor with a resistance value of a thousand ohms.
所述的锂电池管理系统的控制方法为： The control method of the lithium battery management system is:
步骤一： step one:
将具有所述锂电池管理系统的电池包接入外接设备； Connecting the battery pack with the lithium battery management system to an external device;
步骤二： Step two:
当打开所述外接设备的启动开关时，外接设备的控制电路被启动并输出一个唤醒控制信号给所述电池管理系统控制单元； When the start switch of the external device is turned on, the control circuit of the external device is activated and outputs a wake-up control signal to the battery management system control unit;
步骤三： Step three:
接收到唤醒控制信号的电池管理系统控制单元将输出一个开关控制信号给所述电池包输出开关以将常开型开关闭合； The battery management system control unit that receives the wake-up control signal will output a switch control signal to the output switch of the battery pack to close the normally open switch;
步骤四： Step four:
当将具有所述锂电池管理系统的电池包与外接设备断开时，所述闭合的常开型开关恢复常开状态，所述电池管理系统控制单元处于完全关闭状态。 When the battery pack with the lithium battery management system is disconnected from the external device, the closed normally open switch returns to the normally open state, and the battery management system control unit is in a completely closed state.
本发明通过将具有所述锂电池管理系统的电池包与外接设备的接入或者断开来实现锂电池管理系统的开启或者关闭，在用户操作外接设备时即实现了现有技术中的专用开关的功能，具有降低成本、操作方便等有益效果。 The present invention realizes the opening or closing of the lithium battery management system by connecting or disconnecting the battery pack with the lithium battery management system and the external device, and realizes the special switch in the prior art when the user operates the external device The function has beneficial effects such as cost reduction and convenient operation.
附图说明 Description of drawings
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例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，其中： In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work, wherein:
图1是本发明锂电池管理系统的示意图； Fig. 1 is the schematic diagram of lithium battery management system of the present invention;
图2是本发明锂电池管理系统控制方法的流程图。 Fig. 2 is a flow chart of the control method of the lithium battery management system of the present invention.
具体实施方式 Detailed ways
下面将对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做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。 The technical solutions in the embodiments of the present invention will be described clearly and completely below, obviously, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
图1是本发明锂电池管理系统的示意图。如图1所示，本发明所述的外接设备具体是指由锂电池包驱动的直流园林工具或直流电动工具，具体而言，可以是割草机、打草机、修枝机、吹风机等园林工具类产品，或者是电钻、电圆锯、往复锯等电动工具类产品。因此，图1所示的由若干锂电芯组成的电池组、电池管理系统控制单元、电池包输出开关及输出电阻均是设置在锂电池包内的组件，当锂电池包接入外接设备时，本发明锂电池管理系统方可工作；当锂电池包与外接设备断开时，本发明锂电池管理系统即停止工作。所述锂电池管理系统，具体包括：用于提供动力的由若干锂电芯组成的电池组；以及用于控制所述电池组输出电流导通或断开的电池包输出开关，其中，所述电池包输出开关为常开型开关；以及用于控制所述电池包输出开关开启或闭合的电池管理系统控制单元；以及与所述电池包输出开关并联设置的输出电阻。 Fig. 1 is a schematic diagram of the lithium battery management system of the present invention. As shown in Figure 1, the external device described in the present invention specifically refers to a DC garden tool or a DC power tool driven by a lithium battery pack, specifically, it can be a lawn mower, a lawn trimmer, a trimmer, a hair dryer, etc. Garden tools, or power tools such as electric drills, electric circular saws, and reciprocating saws. Therefore, the battery pack composed of several lithium batteries, the battery management system control unit, the battery pack output switch, and the output resistor shown in Figure 1 are all components installed in the lithium battery pack. When the lithium battery pack is connected to an external device, Only the lithium battery management system of the present invention can work; when the lithium battery pack is disconnected from the external device, the lithium battery management system of the present invention stops working. The lithium battery management system specifically includes: a battery pack composed of several lithium cells for providing power; and a battery pack output switch used to control the conduction or disconnection of the output current of the battery pack, wherein the battery The pack output switch is a normally open switch; and a battery management system control unit for controlling the battery pack output switch to be opened or closed; and an output resistor arranged in parallel with the battery pack output switch.
具体而言，当锂电池包接入外接设备时，由于所述电池包输出开关断开，所述电池组通过一个具有千欧级电阻值的输出电阻给外接设备提供一个通过输出电阻的电池回路，即由电池组正极→外接设备→输出电阻→电池组负极形成的回路。通过这个回路，电池的电流将分别流过外接设备和输出电阻，直到外接设备内部的输入电容电压与电池组电压一致，此时外接设备就能够获得可以开机的启动能量。但同样因为输出电阻的存在，电池包输出开关没有闭合之前外设都无法获得能够正常工作的电流。 Specifically, when the lithium battery pack is connected to an external device, since the output switch of the battery pack is disconnected, the battery pack provides the external device with a battery circuit through the output resistance through an output resistor with a resistance value of a thousand ohms. , that is, the loop formed by the positive pole of the battery pack→external equipment→output resistance→the negative pole of the battery pack. Through this circuit, the current of the battery will flow through the external device and the output resistor respectively until the voltage of the input capacitor inside the external device is consistent with the voltage of the battery pack, at this time the external device can obtain the starting energy that can be turned on. But also because of the existence of the output resistance, the peripherals cannot obtain the current that can work normally before the output switch of the battery pack is closed.
只有当用户在打开外接设备的启动开关时，外接设备的控制电路被启动并输出一个唤醒控制信号给所述电池管理系统控制单元，然后接收到唤醒控制信号的电池管理系统控制单元将输出一个开关控制信号给所述电池包输出开关，进而将常开型开关闭合，因此使得输出电阻被短路，实现电池组给外接设备持续供电的功能，外接设备方可正常工作。 Only when the user turns on the start switch of the external device, the control circuit of the external device is activated and outputs a wake-up control signal to the battery management system control unit, and then the battery management system control unit that receives the wake-up control signal will output a switch The control signal is sent to the battery pack output switch, and then the normally open switch is closed, so that the output resistance is short-circuited, and the battery pack can continuously supply power to the external device, so that the external device can work normally.
图2是本发明锂电池管理系统控制方法的流程图。所述的锂电池管理系统的控制方法为： Fig. 2 is a flow chart of the control method of the lithium battery management system of the present invention. The control method of the lithium battery management system is:
步骤一：将具有所述锂电池管理系统的电池包接入外接设备； Step 1: Connect the battery pack with the lithium battery management system to an external device;
步骤二：当打开所述外接设备的启动开关时，外接设备的控制电路被启动并输出一个唤醒控制信号给所述电池管理系统控制单元； Step 2: When the start switch of the external device is turned on, the control circuit of the external device is activated and outputs a wake-up control signal to the battery management system control unit;
步骤三：接收到唤醒控制信号的电池管理系统控制单元将输出一个开关控制信号给所述电池包输出开关以将常开型开关闭合； Step 3: The battery management system control unit that receives the wake-up control signal will output a switch control signal to the battery pack output switch to close the normally open switch;
步骤四：当将具有所述锂电池管理系统的电池包与外接设备断开时，所述闭合的常开型开关恢复常开状态，所述电池管理系统控制单元处于完全关闭状态。 Step 4: When the battery pack with the lithium battery management system is disconnected from the external device, the closed normally open switch returns to the normally open state, and the battery management system control unit is in a completely closed state.
综上所述，本发明是通过将具有所述锂电池管理系统的电池包与外接设备的接入或者断开来实现锂电池管理系统的开启或者关闭，在用户操作外接设备时即实现了现有技术中的专用开关的功能，具有降低成本、操作方便等有益效果。 To sum up, the present invention realizes the opening or closing of the lithium battery management system by connecting or disconnecting the battery pack with the lithium battery management system from the external device, and realizes the actual operation when the user operates the external device. The utility model has the function of a special switch in the technology, and has beneficial effects such as cost reduction and convenient operation.
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本发明的专利保护范围内。 The above descriptions are only examples of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the description of the present invention, or directly or indirectly used in other related technical fields, shall be The same reasoning is included in the patent protection scope of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510195725.5A CN105006851A (en) | 2015-08-28 | 2015-08-28 | Lithium battery management system and control method thereof |
| PCT/CN2016/077169 WO2017036120A1 (en) | 2015-08-28 | 2016-03-23 | Lithium battery management system and control method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510195725.5A CN105006851A (en) | 2015-08-28 | 2015-08-28 | Lithium battery management system and control method thereof |
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| CN201510195725.5A Pending CN105006851A (en) | 2015-08-28 | 2015-08-28 | Lithium battery management system and control method thereof |
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| CN (1) | CN105006851A (en) |
| WO (1) | WO2017036120A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017036120A1 (en) * | 2015-08-28 | 2017-03-09 | 常州格力博有限公司 | Lithium battery management system and control method therefor |
| CN112265471A (en) * | 2020-10-27 | 2021-01-26 | 格力博(江苏)股份有限公司 | Battery pack on-off control system |
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| US20050088206A1 (en) * | 2003-10-22 | 2005-04-28 | Atmel Germany Gmbh | Circuit arrangement for recognizing and outputting control signals, integrated circuit including the same, and use thereof |
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| JP3642433B2 (en) * | 1994-03-08 | 2005-04-27 | ソニー株式会社 | Detachable battery unit |
| CN104348219B (en) * | 2014-07-15 | 2017-02-08 | 常州格力博有限公司 | Electrical system with replaceable batteries |
| CN105006851A (en) * | 2015-08-28 | 2015-10-28 | 常州格力博有限公司 | Lithium battery management system and control method thereof |
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- 2015-08-28 CN CN201510195725.5A patent/CN105006851A/en active Pending
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- 2016-03-23 WO PCT/CN2016/077169 patent/WO2017036120A1/en not_active Ceased
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| US20050088206A1 (en) * | 2003-10-22 | 2005-04-28 | Atmel Germany Gmbh | Circuit arrangement for recognizing and outputting control signals, integrated circuit including the same, and use thereof |
| CN102137772A (en) * | 2008-09-01 | 2011-07-27 | 株式会社Lg化学 | Device and method for controlling switching unit between battery pack and load, battery pack and battery management device including the device |
| CN103872719A (en) * | 2012-12-18 | 2014-06-18 | 新普科技股份有限公司 | Ways to reduce battery drain at rest |
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| WO2017036120A1 (en) * | 2015-08-28 | 2017-03-09 | 常州格力博有限公司 | Lithium battery management system and control method therefor |
| CN112265471A (en) * | 2020-10-27 | 2021-01-26 | 格力博(江苏)股份有限公司 | Battery pack on-off control system |
| CN112265471B (en) * | 2020-10-27 | 2022-03-22 | 格力博(江苏)股份有限公司 | Battery pack on-off control system |
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| WO2017036120A1 (en) | 2017-03-09 |
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