WO2023045332A1 - 一种电池管理系统 - Google Patents

一种电池管理系统 Download PDF

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Publication number
WO2023045332A1
WO2023045332A1 PCT/CN2022/090066 CN2022090066W WO2023045332A1 WO 2023045332 A1 WO2023045332 A1 WO 2023045332A1 CN 2022090066 W CN2022090066 W CN 2022090066W WO 2023045332 A1 WO2023045332 A1 WO 2023045332A1
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WO
WIPO (PCT)
Prior art keywords
battery
connection
unit
module
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/090066
Other languages
English (en)
French (fr)
Inventor
余海军
李爱霞
谢英豪
张学梅
陈康
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Brunp Recycling Technology Co Ltd
Guangdong Brunp Recycling Technology Co Ltd
Hunan Bangpu Automobile Circulation Co Ltd
Original Assignee
Hunan Brunp Recycling Technology Co Ltd
Guangdong Brunp Recycling Technology Co Ltd
Hunan Bangpu Automobile Circulation Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Brunp Recycling Technology Co Ltd, Guangdong Brunp Recycling Technology Co Ltd, Hunan Bangpu Automobile Circulation Co Ltd filed Critical Hunan Brunp Recycling Technology Co Ltd
Priority to GB2318224.9A priority Critical patent/GB2622325A/en
Priority to ES202490009A priority patent/ES2971552B2/es
Priority to DE112022002199.3T priority patent/DE112022002199B4/de
Publication of WO2023045332A1 publication Critical patent/WO2023045332A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/70—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries characterised by the mechanical construction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/50—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries acting upon multiple batteries simultaneously or sequentially
    • H02J7/575—Parallel/serial switching of connection of batteries to charge or load circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
    • H02J7/62—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements against overcurrent
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
    • H02J7/663—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/865—Battery or charger load switching, e.g. concurrent charging and load supply
    • 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

Definitions

  • the present application relates to the technical field of battery management, in particular to a battery management system.
  • the domestically recycled lithium battery can still be used as a reserve battery for off-peak energy storage after cascade utilization, for example, it is suitable for various mobile signal base stations.
  • multiple batteries are usually formed into a battery pack, and then multiple battery packs are connected in parallel according to capacity requirements to obtain an energy storage power supply.
  • the existing battery management system will isolate the battery pack with a lower voltage. In this way, before the maintenance of the battery pack is completed, the reserve power of the energy storage power supply is still lower than the normal design power, thus affecting the normal power consumption.
  • This application aims to solve at least one of the technical problems existing in the prior art. For this reason, the present application proposes a battery management system, which can improve the power supply stability of battery cascade utilization.
  • a battery management system comprising: a plurality of battery connection modules, each of which has a positive input terminal and a negative input terminal, and between two adjacent battery connection modules The connection between the positive input terminal and the negative input terminal is used to realize the connection of a plurality of the battery connection modules to form at least a part of the charging and discharging series.
  • the battery connection module includes a short-circuit unit, a battery connection for connecting unit and an on-off switching unit, the short-circuit unit is connected in parallel with the battery connection unit, and both the short-circuit unit and the battery connection unit are connected to the positive input terminal and the negative input terminal through the on-off switching unit electrical connection; charge and discharge module, electrically connected with the charge and discharge series circuit; battery monitoring module, connected with the battery connection unit to monitor battery condition; main control module, respectively connected with the battery monitoring module and the on-off switch The unit is connected to control the operation of the on-off switching unit according to the condition of the battery.
  • the battery management system disclosed in the embodiments of the present application includes a plurality of battery connection modules, a charging and discharging module, a battery monitoring module, and a main control module.
  • each battery connection module has a positive input terminal and a negative input terminal, and two adjacent battery connection modules are connected through the positive input terminal and the negative input terminal to realize the connection of multiple battery connection modules to form at least part of the charging and discharging series circuit
  • the battery connection module includes a short-circuit unit, a battery connection unit for connecting with the battery, and an on-off switching unit.
  • the main control module can control each battery connection unit or short-circuit unit to connect to the charging and discharging series circuit through the on-off switching unit, so that the batteries connected to the charging and discharging series circuit are connected in series with each other and connected to the charging and discharging module for charging and discharging. Normal charge and discharge. Based on this, the main control module monitors the battery condition of the battery connection unit through the battery monitoring module, so as to isolate the battery with abnormal battery condition from the charging and discharging series circuit, and then connect the normal and idle battery to the charging and discharging series circuit.
  • this application can independently realize flexible control of the battery connection and connection in units of battery connection units to maintain the charge-discharge series circuit.
  • the road is in a normal charging and discharging state, which further ensures sufficient battery capacity surplus, which is conducive to improving the power supply stability and reliability of battery cascade utilization, and can also reduce the frequency of battery maintenance and save maintenance costs.
  • the battery monitoring module includes a power monitoring unit and a charge-discharge test unit
  • the power monitor unit is connected to the battery connection unit to monitor the power condition of the battery
  • the charge-discharge test unit is connected to the battery
  • the battery connection unit is connected to perform charge and discharge tests on the battery connection unit
  • the main control module is connected to the power monitoring unit and the charge and discharge test unit respectively.
  • the present application further includes a first on-off control module and a second on-off control module
  • the battery connection unit includes a first positive terminal and a first negative terminal
  • the charge and discharge test unit includes a first input terminal and a second input terminal
  • the main control module is respectively connected with the first on-off control module and the second on-off control module to control the first on-off control module and the second on-off control module Module on-off
  • the first input terminal is connected to the first positive terminal through the first on-off control module
  • the second input terminal is connected to the first negative terminal through the second on-off control module Extreme connection.
  • the battery connection unit includes a first positive terminal and a first negative terminal
  • the on-off switching unit includes a first switch unit and a second switch unit
  • the short-circuit unit includes a third input terminal and a fourth input terminal
  • the first switch unit includes a first connection terminal and a second connection terminal
  • the first connection terminal is connected to the positive input terminal
  • the main control module is connected to the first switch unit
  • the second switch unit includes a third connection terminal and a fourth connection terminal
  • the third connection terminal is connected to the third input terminal.
  • the negative input terminal is connected
  • the main control module is connected to the second switch unit to control the fourth connection terminal to be switched and connected to the first negative terminal and the fourth input terminal respectively.
  • a communication module is further included, and the main control module is connected with the communication module to send the battery condition to an external management platform.
  • the present application also includes a battery box, the battery box is provided with a plurality of battery stations for placing batteries, the battery connection unit corresponds to the battery stations one by one, and the battery station A displacement drive mechanism is provided on the position, and the displacement drive mechanism can drive the battery close to the battery connection unit for engagement, or drive the battery away from the battery connection unit for separation.
  • the displacement drive mechanism includes a sliding frame and a battery placement module for placing batteries, the sliding frame is installed on the battery station, and the battery placement module is slidably connected to the sliding frame .
  • the sliding frame is provided with a first driving module and a gear
  • the first driving module is connected with the gear transmission
  • the battery placement module is provided with a rack
  • the gear is used for
  • the main control module is connected with the first driving module to control the operation of the first driving module, and the first driving module can drive the gear to rotate so that the gear passes through
  • the rack drives the battery placement module to slide along the carriage.
  • the battery station is provided with a connecting base
  • the battery connecting unit includes a first connecting post and a second connecting post
  • the first connecting post and the second connecting post pass through
  • the on-off switching unit is respectively connected to the positive input terminal and the negative input terminal
  • the first connecting column and the second connecting column are arranged on the connecting seat
  • the battery placement module is provided with A positive connection unit and a negative connection unit
  • the positive connection unit is used to connect the positive pole of the battery
  • the negative connection unit is used to connect the negative pole of the battery
  • the positive connection unit is provided with a first slot
  • the The negative connecting unit is provided with a second slot
  • the first slot is used for connecting the first connecting column
  • the second slot is used for connecting the second connecting column.
  • both the first connecting column and the second connecting column are studs, the first slot and the second slot are threaded slots, and the connecting seat
  • a second drive module is also provided, the second drive module is connected to the first connecting column and the second connecting column respectively, and the main control module is connected to the second driving module to control the first connecting column.
  • Two driving modules work, the second driving module can drive the first connecting column to rotate so that the first connecting column is screwed to or separated from the first slot hole, and drive the second connecting column to rotate to The second connecting column is threadedly connected to or separated from the second slot hole.
  • FIG. 1 is a schematic structural block diagram of a battery management system in an embodiment of the present application
  • Fig. 2 is a schematic diagram of some circuit principles of the battery connection module, the first on-off control module and the second on-off control module in the embodiment of the present application;
  • Fig. 3 is a schematic diagram of the circuit connection of the charging and discharging series circuit, the main control module and the charging and discharging module in the embodiment of the present application;
  • Fig. 4 is a schematic structural diagram of a battery box in an embodiment of the present application.
  • Fig. 5 is a partial enlarged view of place a in Fig. 4;
  • Fig. 6 is a schematic structural diagram of a connection seat in an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a battery placement module in an embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of another connecting seat in the embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of another battery placement module in the embodiment of the present application.
  • Fig. 10 is a bottom view of the connecting seat shown in Fig. 8 .
  • Battery box 100 sliding frame 110, first drive module 111, gear 112, battery placement module 120, positive connection unit 121, negative connection unit 122, first slot 123, second slot 124, electrode elastic pressing piece 125, pressing Sheet 126, front baffle 127, rear baffle 128, side baffle 129, connection seat 130, second drive module 131, connection wire 132, second motor 133, worm gear box 134, insulating sheet 135, electrical connection terminal sheet 136 , battery connection unit 210, first connection column 211, second connection column 212, on-off switch unit 220, first switch unit 221, second switch unit 222, short circuit unit 230, charge and discharge module 300, power supply unit 310, load Unit 320, battery monitoring module 400, power monitoring unit 410, charge and discharge test unit 420, main control module 500, first on-off control module 610, second on-off control module 620, communication module 700, battery 800, battery positive pole 810 and the negative electrode 820 of the battery.
  • orientation descriptions such as terms “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal” “, “Top”, “Bottom”, “Inner”, “Outer” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the application.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components.
  • installation should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components.
  • the battery management system includes a plurality of battery connection modules, a charging and discharging module 300 , a battery monitoring module 400 and a main control module 500 .
  • each battery connection module has a positive input terminal and a negative input terminal, and two adjacent battery connection modules are connected through the positive input terminal and the negative input terminal to realize the connection of multiple battery connection modules to form at least part of the charging and discharging series circuit , and the charging and discharging series is connected to the charging and discharging module 300 .
  • the battery connection module includes a short-circuit unit 230, a battery connection unit 210 for connecting to the battery 800, and an on-off switching unit 220.
  • the short-circuit unit 230 is connected in parallel with the battery connection unit 210, and both the short-circuit unit 230 and the battery connection unit 210 are switched on and off.
  • Cell 220 is electrically connected to the positive input and the negative input.
  • the battery monitoring module 400 is connected to the battery connection unit 210 to monitor the battery condition
  • the main control module 500 is respectively connected to the battery monitoring module 400 and the on-off switching unit 220 to control the on-off switching unit 220 to work according to the battery condition.
  • the main control module 500 can be composed of a micro controller unit (micro controller unit, MCU) or a central processing unit (central processing unit, CPU) and its peripheral circuits, or an existing battery management system (battery management system, BMS). ) chip, the main control module 500 is not specifically limited.
  • MCU micro controller unit
  • CPU central processing unit
  • BMS battery management system
  • the main control module 500 separately controls the battery connection unit 210 or the short circuit unit 230 to connect to the charging and discharging series through the on-off switching unit 220, so that the batteries 800 connected to the charging and discharging series are connected in series. And communicate with the charging and discharging module 300 for normal charging and discharging.
  • a plurality of batteries 800 connected in series through the battery connection module form a charge-discharge series circuit, and the positive input terminal IN1 of the charge-discharge series circuit is connected to one end of the charge-discharge module 300 for charging and discharging.
  • Both the negative input terminal IN2 of the series circuit and the other terminal of the charging and discharging module 300 are connected to the main control module 500 .
  • the charging and discharging module 300 may include a power supply unit 310 and a load unit 320 connected in parallel.
  • the power supply unit 310 is used to charge the charging and discharging series circuit
  • the load unit 320 is used to discharge the charging and discharging series circuit.
  • the main control module 500 can control the charging and discharging series to communicate with the power supply unit 310 and the load unit 320 in sequence to complete a charging and discharging process.
  • the main control module 500 monitors the battery condition of the battery connection unit 210 through the battery monitoring module 400, thereby isolating the battery 800 with an abnormal battery condition from the charging and discharging string, and then connecting the battery 800 with a normal battery condition and being idle to the charging and discharging string. Therefore, compared to directly isolating the entire charge-discharge series circuit and waiting for maintenance or replacement of faulty batteries in the charge-discharge series circuit, this application can independently realize flexible control of the battery connection and connection with the battery connection unit 210.
  • the number of battery connection modules can be adjusted according to demand, so that the number of battery connection modules is greater than the number of batteries required by the predetermined voltage, so as to ensure that there is still a backup battery in the case of a certain number of batteries failing to maintain the charging and discharging series circuit normal use.
  • the battery monitoring module 400 may use the power monitoring unit 410 and the charging and discharging testing unit 420, etc., and there is no specific limitation thereto. Specifically, both the power monitoring unit 410 and the charging and discharging testing unit 420 are connected to the battery connection unit 210 .
  • the power monitoring unit 410 may include, but not limited to, a state of charge (state of charge, SOC) monitoring unit and a battery health degree (state of health, SOH) monitoring unit, which are respectively used to monitor the charging capacity and the charging capacity of the battery connected to the battery connection unit 210. Performance status and other power conditions are monitored.
  • the charge and discharge test unit 420 is used to perform a separate charge and discharge test on the battery connected to the battery connection unit 210.
  • the charge and discharge test unit 420 includes a charging branch, a discharging branch and a switching unit connected in parallel.
  • the charging branch includes The power supply and the discharge branch include loads (such as resistors and electrical equipment, etc.), and the switching unit can be a transfer switch or a relay.
  • the main control module 500 is connected to the switching unit to control the operation of the switching unit.
  • the switching unit is used to connect the battery connection unit 210 with the charging branch to charge the battery connected to the battery connection unit 210, or connect the battery connection unit 210 to the discharge branch.
  • the circuit is turned on to discharge the battery connected to the battery connection unit 210 .
  • the main control module 500 is connected to the power monitoring unit 410 and the charging and discharging testing unit 420 respectively.
  • the control module 500 can perform a charge and discharge test on the abnormal battery through the charge and discharge test unit 420, so as to identify whether the battery connected to the battery connection unit 210 has a single sporadic failure according to the monitoring results of the power monitoring unit 410 during the charge and discharge test.
  • the battery that returns to normal after a single accidental failure can be reconnected to the charging and discharging series, or the damaged battery can be recorded for subsequent maintenance. Therefore, by identifying a single occasional fault battery and reusing it, avoiding the waste of resources caused by direct shelving or replacing the battery, further prolonging the service life of the battery, and expanding the application range of battery cascade utilization.
  • the battery connection unit 210 includes a first positive terminal and a first negative terminal. Further, optionally, as shown in FIG. 2 , the battery management system further includes a first on-off control module 610 and a second The on-off control module 620, the first on-off control module 610 and the second on-off control module 620 can all use relays or switch components (such as single-pole switches or toggle switches, etc.), which are not limited.
  • the charging and discharging test unit 420 includes a first input terminal and a second input terminal, such as the input terminals IN3 and IN4 shown in FIG. input connection.
  • the main control module 500 is respectively connected with the first on-off control module 610 and the second on-off control module 620 to control the on-off of the first on-off control module 610 and the second on-off control module 620, for example, to control the on-off of the first on-off control module 610 and the second on-off control module 620 in FIG.
  • the connecting end of an on-off control module 610 is connected to the upper contact, then the first on-off control module 610 is disconnected, if the connecting end of the first on-off control module 610 is controlled to be connected to the lower contact, the first on-off control
  • the channel of the module 610 is similarly applicable to the second on-off control module 620 .
  • the first input terminal is connected to the first positive terminal through the first on-off control module 610
  • the second input terminal is connected to the first negative terminal through the second on-off control module 620.
  • the charge and discharge test unit 420 is connected to the battery connection unit 210, which facilitates the separate charge and discharge test of the battery connection unit 210 under the condition that the battery connection unit 210 is isolated from the charge and discharge series. Controllability.
  • the on-off switching unit 220 includes a first switch unit 221 and a second switch unit 222
  • the short-circuit unit 230 includes a third input terminal and a fourth input terminal
  • the unit 221 includes a first connection end and a second connection end, and the first connection end is connected to the positive input end.
  • the main control module 500 is connected to the first switch unit 221 , so as to control the switching connection between the second connection terminal and the first positive terminal and the third input terminal respectively.
  • the second switch unit 222 includes a third connection terminal and a fourth connection terminal, the third connection terminal is connected to the negative input terminal, and the main control module 500 is connected to the second switch unit 222, so as to control the connection between the fourth connection terminal and the first negative terminal Switch connection with the fourth input terminal.
  • the battery connection unit 210 is connected to the charging and discharging series circuit.
  • the short circuit unit 230 is connected to the charging and discharging series circuit.
  • the battery management system further includes a communication module 700, and the main control module 500 is connected to the communication module 700, so as to send the battery condition to an external management platform through the communication module 700.
  • the communication module 700 may include but not limited to a Bluetooth communication module 700, a WiFi communication module 700 or a 2.4GHz wireless communication module 700, etc.
  • the external management platform may be a cloud service platform, or a server, a mobile terminal (such as a mobile phone), a wearable device , tablet, laptop or desktop computer and other terminal management platforms.
  • the main control module 500 can generate a fault code according to the monitoring data of the battery monitoring module 400, combined with battery information such as the serial number and signal of the faulty battery, and then send the fault code to the external management platform through the communication module 700, so that the external management
  • the platform provides fault prompts and analysis based on fault codes, so that relevant personnel can quickly learn about fault conditions and arrange fault handling.
  • the battery management system further includes a battery box 100, and the battery box 100 is provided with a plurality of battery stations for placing the battery 800, and the battery connection unit 210 is in one-to-one correspondence with the battery stations, so that A safer battery environment is provided to protect the battery 800 .
  • the battery station is provided with a displacement driving mechanism, which can drive the battery 800 close to the battery connection unit 210 to join, or drive the battery 800 away from the battery connection unit 210 to separate, so it is more convenient to place and take the battery 800, and the operation is flexible .
  • the battery management system may include one or more battery boxes 100, the batteries placed in each battery box 100 belong to a battery pack, each battery pack is used to connect to the same charging and discharging series circuit, and the main control module The 500 can sequentially control the connection of different charge and discharge series circuits with the charge and discharge module 300 to complete the charge and discharge processes of different battery packs and realize the switching and use of different battery packs.
  • the displacement drive mechanism may include a conveyor belt, a drive motor, and at least two conveyor rollers, one of which may be coaxially connected to the drive motor, and this conveyor roller is connected to the other conveyor rollers through a conveyor belt.
  • the main control module 500 is connected to the drive motor to control the operation of the drive motor.
  • the drive motor can drive the conveyor belt to drive the battery 800 to move from the end of the conveyor belt away from the battery connection unit 210 to the end close to the battery connection unit 210.
  • the driving motor can also drive the conveyor belt to drive the battery 800 to move to an end far away from the battery connection unit 210 to realize the transmission of the battery 800 .
  • a limiting portion may also be provided on the conveyor belt for fixing the battery 800 placed on the conveyor belt to prevent the battery 800 from sliding.
  • the displacement driving mechanism may include a sliding frame 110 and a battery placement module 120 for placing the battery 800, the sliding frame 110 is arranged on the battery station, and the battery placement module 120 and the sliding frame 110 sliding connections.
  • the sliding frame 110 is a guide rail
  • the battery placement module 120 is provided with a sliding block.
  • the middle part of the sliding block is provided with a sliding groove, and the guide rail runs through the sliding groove. slide.
  • the carriage 110 is provided with a first drive module 111 and a gear 112,
  • the first drive module 111 can be a drive motor or a reducer (such as a gear 112 reducer and a worm reducer device), etc.
  • the first driving module 111 is connected to the gear 112
  • the battery placement module 120 is provided with a rack
  • the gear 112 is used to mesh with the rack
  • the main control module 500 is connected to the first driving module 111 to control the first
  • the driving module 111 works, and the first driving module 111 can drive the gear 112 to rotate so that the gear 112 drives the battery placement module 120 to slide along the sliding frame 110 through the rack.
  • the first drive module 111 adopts a worm gear reducer, and the first drive module 111 includes a first motor, a first worm wheel and a first worm, and the first worm wheel and the first worm adopt a self-locking structure.
  • the first motor is connected in rotation with the first worm wheel, the first worm wheel meshes with the first worm, and the two ends of the first worm can be respectively fixedly connected with a gear 112, so the first motor drives the first worm wheel to rotate and can drive the first worm Rotate, and then drive the gears 112 at both ends of the first worm to rotate through the first worm.
  • a connection seat 130 is provided on the battery station, and the connection seat 130 may be made of insulating material.
  • the battery connecting unit 210 includes a first connecting post 211 and a second connecting post 212 , and the first connecting post 211 and the second connecting post 212 are made of mutually insulated conductive materials. Both the first connecting column 211 and the second connecting column 212 are respectively connected to the positive input terminal and the negative input terminal through the on-off switching unit 220 , and the first connecting column 211 and the second connecting column 212 are disposed on the connecting seat 130 .
  • the battery placement module 120 is provided with a positive connection unit 121 and a negative connection unit 122, the positive connection unit 121 is used to connect the battery positive 810, the negative connection unit 122 is used to connect the battery negative 820, and the positive connection unit 121 is provided with a first slot hole 123, the negative connection unit is provided with a second slot 124, the first slot 123 is used to connect the first connecting column 211, and the second slot 124 is used to connect the second connecting column 212, so that through the connecting column and the slot
  • the engagement of the battery connection unit 210 with the battery 800 is achieved by cooperation.
  • both the positive connection unit 121 and the negative connection unit 122 can include an electrode block (such as a copper column) and an electrode spring 125, and the electrode spring 125 is made of a conductive material, and the positive electrode 810 of the battery is connected to the positive connection unit by squeezing the electrode spring 125.
  • 121 is connected to the electrode block
  • the negative electrode 820 of the battery is connected to the electrode block of the negative connection unit by pressing the electrode pressing piece 125 .
  • the battery placement module 120 also includes a housing and a rear baffle 128, an accommodating cavity and an opening are formed in the housing, and the rear baffle 128 is detachably connected to the housing to close the opening of the housing, so the The battery 800 is put into the accommodating cavity through the opening.
  • the battery placement module 120 may include a front baffle 127, a rear baffle 128 and two side baffles 129, and the front baffle 127, the rear baffle 128 and two An accommodating slot for placing the battery 800 is formed between the side baffles 129 .
  • the front baffle 127 (or the housing) of the battery placement module 120 is provided with a first through hole and a second through hole
  • the electrode block of the positive connection unit 121 is provided with a first slot 123
  • the negative connection unit The electrode block is provided with a second slot 124
  • the first through hole communicates with the first slot 123
  • the second through hole communicates with the second slot 124 .
  • the battery placement module 120 moves closer to or away from the battery connection unit 210
  • the front baffle 127 faces toward the battery connection unit 210 so that the connection posts are aligned with the through holes.
  • the battery placement module 120 also includes a pressing piece 126, which can be arranged between the positive connection unit 121 and the negative connection unit 122. ), due to the limited space for placing the battery 800, the pressing sheet 126 is deformed by the pressing of the battery 800, and the pressing sheet 126 acts against the battery 800 to compress the battery 800.
  • both the first connecting column 211 and the second connecting column 212 are connecting terminals, both connecting terminals can be connected to the on-off switching unit 220 through the connecting wire 132, and The two connection terminals are respectively used for inserting into the first slot 123 and the second slot 124 .
  • the connecting end of the first connecting post 211 is provided with an arc-shaped first gap, and the first slot 123 is provided with a first protrusion.
  • the first connecting post 211 enters the first slot 123, the first protrusion The portion can abut against the first notch so that the first protrusion engages with the first notch.
  • the connecting end of the second connecting column 212 is also provided with an arc-shaped second gap, and the second slot 124 is provided with a second protrusion.
  • the second connecting column 212 enters the second slot 124, the second The protrusion can abut against the second notch so that the second protrusion engages with the second notch.
  • both the first connecting column 211 and the second connecting column 212 can be studs, and both the first slot 123 and the second slot 124 can be threaded slots.
  • a second drive module 131 is also provided on the connection base 130, and the second drive module 131 may be a drive motor or a reducer (such as a gear 112 reducer and a worm reducer) and the like.
  • the second driving module 131 is connected to the first connecting column 211 and the second connecting column 212 respectively, and the main control module 500 is connected to the second driving module 131 to control the operation of the second driving module 131.
  • the second driving module 131 can drive the first The connecting post 211 is rotated so that the first connecting post 211 is threadedly connected to or separated from the first slot 123 , and the second connecting post 212 is driven to rotate so that the second connecting post 212 is threadedly connected to or separated from the second slot 124 . It can be seen that, in this way, the second driving module 131 can control the two connecting posts to be threadedly connected to the two slots respectively, so as to tighten the connecting posts and the slots and ensure the stable connection between the battery connecting unit 210 and the battery 800 .
  • the second drive module 131 can adopt a worm gear reducer, then the second drive module 131 includes a second motor 133, a second worm wheel and a third worm wheel, and the second worm wheel and the third worm wheel can be arranged in different worm gear boxes 134 .
  • the second motor 133 is respectively connected with the second worm wheel and the third worm wheel to drive the second worm wheel and the third worm wheel to rotate in opposite directions.
  • the second worm gear meshes with the first connecting post 211 so that the second worm gear drives the first connecting post 211 to rotate
  • the third worm gear meshes with the second connecting post 212 so that the third worm gear drives the second connecting post 212 to rotate. It can be understood that the first The rotation directions of the first connecting post 211 and the second connecting post 212 are also opposite.
  • two electrical connection terminal pieces 136 and two insulating pieces 135 may be provided on the connection base 130, which are divided into a first electrical connection terminal piece, a second electrical connection terminal piece, a first insulating piece and a second insulating piece,
  • the first electrical connection terminal piece is electrically connected with the first connecting column 211 and the on-off switching unit 220 respectively, the first electrical connection terminal piece can be specifically arranged on the first insulating sheet, and the second electrical connection terminal piece is respectively connected with the second connecting column 212
  • the insulating sheet 135 is separated from the connection base 130 .

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Abstract

一种电池管理系统，包括：多个电池连接模块，每个电池连接模块具有正极输入端和负极输入端，相邻两个电池连接模块之间通过正极输入端和负极输入端连接以实现多个电池连接模块连接构成至少部分充放电串路，电池连接模块包括短路单元、用于连接电池的电池连接单元以及通断切换单元，短路单元与电池连接单元并联，且短路单元和电池连接单元均通过通断切换单元与正极输入端和负极输入端电连接。充放电模块与充放电串路电连接，电池监测模块与电池连接单元连接，主控模块分别与电池监测模块和通断切换单元连接以根据电池监测情况控制通断切换单元工作，从而独立控制电池的接入和接出,保障了电池容量盈余充足，改善了电池梯次利用的供电稳定性。

Description

一种电池管理系统 技术领域
本申请涉及电池管理技术领域，特别涉及一种电池管理系统。
背景技术
为了延长电池的生命周期，目前国内回收的锂电池经过梯次利用后，仍能用作错峰储能的储备电池，例如适用于各种移动信号基站。对回收电池进行梯次利用时，通常会将多个电池组成一组电池包，再根据容量需求将多组电池包并联得到蓄能电源。然而，实际使用中，如果电池包中的各别电池出现荷电状态大幅下滑的情况，使得整个电池包的电压下降，现有的电池管理系统会将电压较低的电池包进行隔离。这种方式下，在电池包维修完成前，蓄能电源的储备电量仍处于低于正常设计电量的状态，因此对正常用电造成影响。
发明内容
本申请旨在至少解决现有技术中存在的技术问题之一。为此，本申请提出一种电池管理系统，能够改善电池梯次利用的供电稳定性。
根据本申请的第一方面实施例的一种电池管理系统，包括：多个电池连接模块，每个所述电池连接模块具有正极输入端和负极输入端，相邻两个所述电池连接模块之间通过所述正极输入端和所述负极输入端连接以实现多个所述电池连接模块连接以构成至少部分充放电串路，所述电池连接模块包括短路单元、用于与电池连接的电池连接单元以及通断切换单元，所述短路单元与所述电池连接单元并联，且所述短路单元和所述电池连接单元均通过所述通断切换单元与所述正极输入端和所述负极输入端电连接；充放电模块，与所述充放电串路电连接；电池监测模块，与所述电池连接单元连接以监测电池情况；主控模块，分别与所述电池监测模块和所述通断切换单元连接以根据电池情况控制所述通断切换单元工作。
根据本申请实施例的一种电池管理系统，至少具有如下有益效果：
本申请实施例公开的电池管理系统，包括多个电池连接模块、充放电模块、电池监测模块以及主控模块。其中，每个电池连接模块具有正极输入端和负极输入端，相邻两个电池连接模块之间通过正极输入端和负极输入端连接以实现多个电池连接模块 连接以构成至少部分充放电串路，而电池连接模块包括短路单元、用于与电池连接的电池连接单元以及通断切换单元，短路单元与电池连接单元并联，且短路单元和电池连接单元均通过通断切换单元与正极输入端和负极输入端电连接，则主控模块可以通过通断切换单元控制各个电池连接单元或短路单元接入充放电串路，使得接入充放电串路的电池相互串联并与充放电模块连通以进行正常充放电。基于此，主控模块通过电池监测模块监测电池连接单元的电池情况，从而将电池情况异常的电池与充放电串路隔离，再将电池情况正常且空闲的电池接入充放电串路，因此，相对于直接隔离整个充放电串路并等待维修或更换充放电串路中的故障电池，本申请能够以电池连接单元为单位独立对电池的接入和接出实现灵活控制,以维持充放电串路处于正常充放电状态，进一步保障了电池容量盈余充足，有利于改善电池梯次利用的供电稳定性和可靠性，还能够降低电池维修的频次，节省了维修成本。
根据本申请的一些实施例，所述电池监测模块包括电量监测单元和充放电测试单元，所述电量监测单元与所述电池连接单元连接以监测电池的电量情况，所述充放电测试单元与所述电池连接单元连接以对所述电池连接单元进行充放电测试，所述主控模块分别与所述电量监测单元和所述充放电测试单元连接。
根据本申请的一些实施例，还包括第一通断控制模块和第二通断控制模块，所述电池连接单元包括第一正极端和第一负极端，所述充放电测试单元包括第一输入端和第二输入端，所述主控模块分别与所述第一通断控制模块和所述第二通断控制模块连接以控制所述第一通断控制模块和所述第二通断控制模块的通断，所述第一输入端通过所述第一通断控制模块与所述第一正极端连接，所述第二输入端通过所述第二通断控制模块与所述第一负极端连接。
根据本申请的一些实施例，所述电池连接单元包括第一正极端和第一负极端，所述通断切换单元包括第一开关单元和第二开关单元，所述短路单元包括第三输入端和第四输入端，所述第一开关单元包括第一连接端和第二连接端，所述第一连接端与所述正极输入端连接，所述主控模块与所述第一开关单元连接以控制所述第二连接端分别与所述第一正极端和所述第三输入端切换连接，所述第二开关单元包括第三连接端和第四连接端，所述第三连接端与所述负极输入端连接，所述主控模块与所述第二开关单元连接以控制所述第四连接端分别与所述第一负极端和所述第四输入端切换连接。
根据本申请的一些实施例，还包括通信模块，所述主控模块与所述通信模块连接以将电池情况发送给外部管理平台。
根据本申请的一些实施例，还包括电池箱，所述电池箱上设置有多个用于放置电池的电池工位，所述电池连接单元与所述电池工位一一对应，所述电池工位上设置有位移驱动机构，所述位移驱动机构能够驱使电池靠近所述电池连接单元以接合，或者驱使所述电池远离所述电池连接单元以分离。
根据本申请的一些实施例，所述位移驱动机构包括滑动架和用于放置电池的电池放置模块，所述滑动架设于所述电池工位上，所述电池放置模块与所述滑动架滑动连接。
根据本申请的一些实施例，所述滑动架上设置有第一驱动模块和齿轮，所述第一驱动模块与所述齿轮传动连接，所述电池放置模块上设有齿条，所述齿轮用于与所述齿条相互啮合，所述主控模块与所述第一驱动模块连接以控制所述第一驱动模块工作，所述第一驱动模块能够驱使所述齿轮转动以使得所述齿轮通过所述齿条带动所述电池放置模块沿着所述滑动架滑动。
根据本申请的一些实施例，所述电池工位上设置有连接座，所述电池连接单元包括第一连接柱和第二连接柱，所述第一连接柱和所述第二连接柱均通过所述通断切换单元分别与所述正极输入端和所述负极输入端连接，所述第一连接柱和所述第二连接柱设于所述连接座上，所述电池放置模块上设有正极连接单元和负极连接单元，所述正极连接单元用于连接所述电池的正极，所述负极连接单元用于连接所述电池的负极，所述正极连接单元上设有第一槽孔，所述负极连接单元上设有第二槽孔，所述第一槽孔用于连接所述第一连接柱，所述第二槽孔用于连接所述第二连接柱。
根据本申请的一些实施例，所述第一连接柱和所述第二连接柱均为螺柱，所述第一槽孔和所述第二槽孔均为螺纹槽孔，所述连接座上还设有第二驱动模块，所述第二驱动模块分别与所述第一连接柱和所述第二连接柱传动连接，所述主控模块与所述第二驱动模块连接以控制所述第二驱动模块工作，所述第二驱动模块能够驱使所述第一连接柱转动以使得所述第一连接柱与所述第一槽孔螺纹连接或分离，以及驱使所述第二连接柱转动以使得所述第二连接柱与所述第二槽孔螺纹连接或分离。
本申请的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
本申请的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1为本申请实施例中一种电池管理系统的原理结构框图；
图2为本申请实施例中电池连接模块、第一通断控制模块和第二通断控制模块的部分电路原理示意图；
图3为本申请实施例中充放电串路、主控模块和充放电模块的电路连接示意图；
图4为本申请实施例中一种电池箱的结构示意图；
图5为图4中a处的局部放大图；
图6为本申请实施例中一种连接座的结构示意图；
图7为本申请实施例中一种电池放置模块的结构示意图；
图8为本申请实施例中另一种连接座的结构示意图；
图9为本申请实施例中另一种电池放置模块的结构示意图；
图10为图8所示连接座的仰视图。
附图标记：
电池箱100、滑动架110、第一驱动模块111、齿轮112、电池放置模块120、正极连接单元121、负极连接单元122、第一槽孔123、第二槽孔124、电极弹压片125、压片126、前挡板127、后挡板128、侧挡板129、连接座130、第二驱动模块131、连接线132、第二电机133、蜗轮箱134、绝缘片135、电连接端片136、电池连接单元210、第一连接柱211、第二连接柱212、通断切换单元220、第一开关单元221、第二开关单元222、短路单元230、充放电模块300、电源单元310、负载单元320、电池监测模块400、电量监测单元410、充放电测试单元420、主控模块500、第一通断控制模块610、第二通断控制模块620、通信模块700、电池800、电池正极810以及电池负极820。
具体实施方式
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
在本申请的描述中，需要理解的是，涉及到方位描述，例如术语“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
在本申请的描述中，若干的含义是一个或者多个，多个的含义是两个以上，大于、小于、超过等理解为不包括本数，以上、以下、以内等理解为包括本数。如果有描述到第一、第二只是用于区分技术特征为目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示的技术特征的先后关系。
本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
如图1至图10所示，根据本申请实施例的电池管理系统，包括多个电池连接模块、充放电模块300、电池监测模块400以及主控模块500。其中，每个电池连接模块具有正极输入端和负极输入端，相邻两个电池连接模块之间通过正极输入端和负极输入端连接以实现多个电池连接模块连接以构成至少部分充放电串路，而充放电串路与充放电模块300连接。电池连接模块包括短路单元230、用于与电池800连接的电池连接单元210以及通断切换单元220，短路单元230与电池连接单元210并联，且短路单元230和电池连接单元210均通过通断切换单元220与正极输入端和负极输入端电连接。电池监测模块400与电池连接单元210连接以监测电池情况，则主控模块500分别与电池监测模块400和通断切换单元220连接，从而根据电池情况控制通断切换单元220工作。
其中，主控模块500可以由微控制单元(micro controller unit，MCU)或者中央处理器(central processing unit，CPU)及其外围电路构成，也可以采用现有的电池管理系统(battery management system，BMS)芯片，对主控模块500不做具体限定。
也就是说，针对每个电池连接模块，主控模块500通过通断切换单元220单独控制电池连接单元210或短路单元230接入充放电串路，使得接入充放电串路的电池800相互串联并与充放电模块300连通以进行正常充放电。如图3所示，示例性的，多个通过电池连接模块接入的电池800相互串联形成充放电串路，而充放电串路的正极输入端IN1与充放电模块300的一端连接，充放电串路的负极输入端IN2以及充放电模块300的另一端均与主控模块500连接。具体的，充放电模块300可以包括相互并联的电源单元310和负载单元320，电源单元310用于对充放电串路进行充电，负载单元320用于对充放电串路进行放电，负载单元320可包括但不限于电阻和用电设备等，则 主控模块500可以控制充放电串路依次与电源单元310和负载单元320连通，完成一次充放电流程。
可见，主控模块500通过电池监测模块400监测电池连接单元210的电池情况，从而将电池情况异常的电池800与充放电串路隔离，再将电池情况正常且空闲的电池800接入充放电串路，因此，相对于直接隔离整个充放电串路并等待维修或更换充放电串路中的故障电池，本申请能够以电池连接单元210为单位独立对电池的接入和接出实现灵活控制,以维持充放电串路处于正常充放电状态，有效地应对维修人员无法及时更换电池的情况，有利于改善电池梯次利用的供电稳定性和可靠性，还能够采用可靠经济的物理结构保障电池容量盈余充足，降低电池维修的频次，节省了维修成本。
可以理解，电池连接模块的数目可以根据需求进行调整，使得电池连接模块的数目大于预定电压所需的电池数目，保证在一定数量的电池发生故障的情况下仍存在备用电池以维持充放电串路的正常使用。
本申请实施例中，电池监测模块400可以采用电量监测单元410和充放电测试单元420等，亦不做具体限定。具体的，电量监测单元410和充放电测试单元420均与电池连接单元210连接。电量监测单元410可包括但不限于荷电状态(state of charge，SOC)监测单元和电池健康度(state of health，SOH)监测单元，分别用于对电池连接单元210所连接电池的充电容量和性能状态等电量情况进行监测。充放电测试单元420用于对电池连接单元210所连接电池进行单独的充放电测试，可选的，充放电测试单元420包括相互并联的充电支路、放电支路和切换单元，充电支路包括电源，放电支路包括负载(比如电阻和用电设备等)，切换单元可采用转换开关或继电器等。主控模块500与切换单元连接以控制切换单元工作，切换单元用于将电池连接单元210与充电支路导通以对电池连接单元210所连接电池进行充电，或者将电池连接单元210与放电支路导通以对电池连接单元210所连接电池进行放电。
基于此，主控模块500分别与电量监测单元410和充放电测试单元420连接，当通过电量监测单元410监测到电池连接单元210的电池电量情况出现异常(比如充电容量大幅度下降)时，主控模块500可以通过充放电测试单元420对出现异常的电池进行充放电测试，从而根据充放电测试过程中电量监测单元410的监测结果识别该电池连接单元210所连接电池是否出现单次偶发故障，使得单次偶发故障后恢复正常的电池可重新接入充放电串路，或者记录已损坏的电池以便于后续维修。因此，通过识别单次偶发故障的电池进行再利用，避免直接搁置或更换电池导致资源浪费，进一步延长了电池使用时间，也能够扩展电池梯次利用的应用范围。
本申请实施例中，电池连接单元210包括第一正极端和第一负极端，进一步，可选的，如图2所示，该电池管理系统还包括第一通断控制模块610和第二通断控制模块620，第一通断控制模块610和第二通断控制模块620均可采用继电器或开关组件(比如单刀开关或切换开关等)，不做限定。充放电测试单元420包括第一输入端和第二输入端，比如图2所示的输入端IN3和IN4，则上述充电支路和放电支路均通过切换单元分别与第一输入端和第二输入端连接。主控模块500分别与第一通断控制模块610和第二通断控制模块620连接以控制第一通断控制模块610和第二通断控制模块620的通断，比如，控制图2中第一通断控制模块610的连接端与上触点连接，则第一通断控制模块610断开，若控制第一通断控制模块610的连接端与下触点连接，则第一通断控制模块610通路，同理适用于第二通断控制模块620。基于此，第一输入端通过第一通断控制模块610与第一正极端连接，第二输入端通过第二通断控制模块620与第一负极端连接，当第一通断控制模块610和第二通断控制单元均通路时，充放电测试单元420与电池连接单元210连通，便于在电池连接单元210与充放电串路隔离的情况下，实现对电池连接单元210进行单独充放电测试的可控性。
在一些可选的实施方式中，如图2所示，通断切换单元220包括第一开关单元221和第二开关单元222，短路单元230包括第三输入端和第四输入端，第一开关单元221包括第一连接端和第二连接端，第一连接端与正极输入端连接。主控模块500与第一开关单元221连接，从而控制第二连接端分别与第一正极端和第三输入端切换连接。第二开关单元222包括第三连接端和第四连接端，第三连接端与负极输入端连接，主控模块500与第二开关单元222连接，从而控制第四连接端分别与第一负极端和第四输入端切换连接。基于此，当第二连接端与第一正极端连接，第四连接端与第一负极端连接时，电池连接单元210接入充放电串路。而当第二连接端与第三输入端连接，第四连接端与第四输入端连接时，短路单元230接入充放电串路。
在一些可选的实施方式中，该电池管理系统还包括通信模块700，主控模块500与通信模块700连接，从而通过通信模块700将电池情况发送给外部管理平台。通信模块700可以包括但不限于蓝牙通信模块700、WiFi通信模块700或者2.4GHz无线通信模块700等，外部管理平台可以是云服务平台，也可以是服务器、移动终端(比如手机)、可穿戴设备、平板电脑、笔记本电脑或者台式电脑等终端管理平台。具体的，主控模块500可以根据电池监测模块400的监测数据，并结合故障电池的编号和信号等电池信息，生成故障码，再将故障码通过通信模块700发送给外部管理平台，使得外部管理平台根据故障码进行故障提示及分析，便于相关人员快速获知故障情况并安 排故障处理工作。
在一些可选的实施方式中，该电池管理系统还包括电池箱100，电池箱100上设置有多个用于放置电池800的电池工位，电池连接单元210与电池工位一一对应，从而提供更加安全的电池环境，起到了对电池800的保护作用。电池工位上设置有位移驱动机构，位移驱动机构能够驱使电池800靠近电池连接单元210以接合，或者驱使电池800远离电池连接单元210以分离，因此更加便于电池800的放置及拿取，操作灵活。
举例来说，如图4所示，电池箱100上设置了16个电池工位，用于放置16个电池，这仅为一种示例，对电池工位的数目不做限定。实际应用中，电池管理系统可以包括一个或一个以上的电池箱100，每个电池箱100中放置的电池属于一个电池组，每个电池组用于接入同一充放电串路，而主控模块500能够依次控制不同充放电串路与充放电模块300连接，以分别完成不同电池组的充放电流程，实现不同电池组的切换使用。
一种实现方式中，位移驱动机构可以包括传送带、驱动马达及至少两个传送辊，其中一个传送辊可与驱动马达同轴连接，而这一传送辊与其他传送辊之间通过传送带传动连接。当电池800放置于传送带上，主控模块500与驱动马达连接以控制驱动马达工作，驱动马达能够驱使传送带带动电池800从传送带上远离电池连接单元210的一端移动至靠近电池连接单元210的一端，直至电池800与电池连接单元210接合，类似的，驱动马达也能够驱使传送带带动电池800移动至远离电池连接单元210的一端，实现对电池800的传送作用。可选的，传送带上还可设置有限位部，用于对放置在传送带上的电池800进行固定以防止电池800滑动。
另一种实现方式中，如图4所示，位移驱动机构可以包括滑动架110和用于放置电池800的电池放置模块120，滑动架110设于电池工位上，电池放置模块120与滑动架110滑动连接。可选的，滑动架110为导轨，电池放置模块120上设有滑动块，滑动块的中部贯穿设有滑动槽，导轨贯穿于滑动槽，滑动块能够随着电池放置模块120的移动沿着导轨滑动。
还可选的，如图4和图5所示，滑动架110上设置有第一驱动模块111和齿轮112，第一驱动模块111可以是驱动电机或减速机(比如齿轮112减速器和蜗杆减速器)等，第一驱动模块111与齿轮112传动连接，电池放置模块120上设有齿条，齿轮112用于与齿条相互啮合，主控模块500与第一驱动模块111连接以控制第一驱动模块111工作，第一驱动模块111能够驱使齿轮112转动以使得齿轮112通过齿条带动电池放 置模块120沿着滑动架110滑动。具体的，第一驱动模块111采用蜗轮蜗杆减速机，则第一驱动模块111包括第一电机、第一蜗轮和第一蜗杆，且第一蜗轮和第一蜗杆采用可自锁结构。第一电机与第一蜗轮旋转连接，第一蜗轮与第一蜗杆啮合，而第一蜗杆的两端可分别固定连接一个齿轮112，故，第一电机驱使第一蜗轮转动，能够带动第一蜗杆转动，进而通过第一蜗杆驱使第一蜗杆两端的齿轮112转动。
进一步的，在一些可选的实施方式中，电池工位上设置有连接座130，连接座130可采用绝缘材料。电池连接单元210包括第一连接柱211和第二连接柱212，第一连接柱211和第二连接柱212采用相互绝缘的导电性材料。第一连接柱211和第二连接柱212均通过通断切换单元220分别与正极输入端和负极输入端连接，且第一连接柱211和第二连接柱212设于连接座130上。电池放置模块120上设有正极连接单元121和负极连接单元122，正极连接单元121用于连接电池正极810，负极连接单元122用于连接电池负极820，正极连接单元121上设有第一槽孔123，负极连接单元上设有第二槽孔124，第一槽孔123用于连接第一连接柱211，第二槽孔124用于连接第二连接柱212，从而通过连接柱和槽孔的配合实现电池连接单元210与电池800的接合。
其中，正极连接单元121和负极连接单元122均可以包括电极块(比如铜柱)和电极弹压片125，电极弹压片125采用导电材料，则电池正极810通过挤压电极弹压片125与正极连接单元121的电极块接合，电池负极820通过挤压电极弹压片125与负极连接单元的电极块接合。可选的，电池放置模块120还包括壳体和后挡板128，壳体内形成有容置腔且具有开口，后挡板128与壳体可拆卸地连接以封闭壳体的开口，故可将电池800从开口放入容置腔内。还可选的，如图7和图9所示，电池放置模块120可以包括前挡板127、后挡板128以及两个侧挡板129，且前挡板127、后挡板128以及两个侧挡板129之间形成有用于放置电池800的容置槽。
进一步的，电池放置模块120的前挡板127(或上述壳体)上设有第一通孔和第二通孔，正极连接单元121的电极块设有第一槽孔123，负极连接单元的电极块设有第二槽孔124，第一通孔与第一槽孔123连通，第二通孔与第二槽孔124连通。当电池放置模块120活动靠近或远离电池连接单元210时，前挡板127朝向电池连接单元210以便连接柱与通孔对准。此外，电池放置模块120还包括压片126，压片126可设于正极连接单元121和负极连接单元122之间，当电池800放入电池放置模块120内(比如上述容置腔或容置槽)，由于放置电池800的空间有限，电池800挤压压片126变形，则压片126反作用于电池800，起到对电池800的压紧作用。
一种实现方式中，如图6和图7所示，第一连接柱211和第二连接柱212均为接 线端子，两个接线端子均可以通过连接线132与通断切换单元220连接，而两个接线端子分别用于插入第一槽孔123和第二槽孔124。具体的，第一连接柱211的连接端设有弧形的第一缺口，第一槽孔123中设有第一突部，当第一连接柱211进入第一槽孔123中，第一突部能够与第一缺口抵接以使得第一突部与第一缺口卡合。类似的，第二连接柱212的连接端也设有弧形的第二缺口，第二槽孔124中设有第二突部，当第二连接柱212进入第二槽孔124中，第二突部能够与第二缺口抵接以使得第二突部与第二缺口卡合。
另一种实现方式中，如图8至图10所示，第一连接柱211和第二连接柱212均可以为螺柱，第一槽孔123和第二槽孔124均可以为螺纹槽孔，连接座130上还设有第二驱动模块131，第二驱动模块131可以是驱动电机或减速机(比如齿轮112减速器和蜗杆减速器)等。第二驱动模块131分别与第一连接柱211和第二连接柱212传动连接，主控模块500与第二驱动模块131连接以控制第二驱动模块131工作，第二驱动模块131能够驱使第一连接柱211转动以使得第一连接柱211与第一槽孔123螺纹连接或分离，以及驱使第二连接柱212转动以使得第二连接柱212与第二槽孔124螺纹连接或分离。可见，这样可以通过第二驱动模块131控制两个连接柱分别与两个槽孔螺纹连接，起到对连接柱与槽孔的上紧作用，保证电池连接单元210与电池800的稳定连接。
具体的，第二驱动模块131可以采用蜗轮蜗杆减速机，则第二驱动模块131包括第二电机133、第二蜗轮和第三蜗轮，第二蜗轮和第三蜗轮可设于不同蜗轮箱134中。第二电机133分别与第二蜗轮和第三蜗轮连接以驱使第二蜗轮和第三蜗轮按照相反的旋向转动。第二蜗轮与第一连接柱211啮合以使得第二蜗轮带动第一连接柱211转动，第三蜗轮与第二连接柱212啮合以使得第三蜗轮带动第二连接柱212转动，可以理解，第一连接柱211与第二连接柱212的转动方向也相反。
进一步的，连接座130上可设置有两个电连接端片136以及两个绝缘片135，分为第一电连接端片、第二电连接端片、第一绝缘片和第二绝缘片，第一电连接端片分别与第一连接柱211和通断切换单元220电连接，第一电连接端片具体可设于第一绝缘片上，第二电连接端片分别与第二连接柱212和通断切换单元220电连接，第二电连接端片具体可设于第二绝缘片上，而第一绝缘片和第二绝缘片设于连接座130上，使得各电连接端片136均通过绝缘片135与连接座130隔开。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存 在矛盾，都应当认为是本说明书记载的范围。
尽管已经示出和描述了本申请的实施例，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (10)

  1. 一种电池管理系统，其特征在于，包括：
    多个电池连接模块，每个所述电池连接模块具有正极输入端和负极输入端，相邻两个所述电池连接模块之间通过所述正极输入端和所述负极输入端连接以实现多个所述电池连接模块连接以构成至少部分充放电串路，所述电池连接模块包括短路单元(230)、用于与电池(800)连接的电池连接单元(210)以及通断切换单元(220)，所述短路单元(230)与所述电池连接单元(210)并联，且所述短路单元(230)和所述电池连接单元(210)均通过所述通断切换单元(220)与所述正极输入端和所述负极输入端电连接；
    充放电模块(300)，与所述充放电串路电连接；
    电池监测模块(400)，与所述电池连接单元(210)连接以监测电池情况；
    主控模块(500)，分别与所述电池监测模块(400)和所述通断切换单元(220)连接以根据电池情况控制所述通断切换单元(220)工作。
  2. 根据权利要求1所述的电池管理系统，其特征在于，所述电池监测模块(400)包括电量监测单元(410)和充放电测试单元(420)，所述电量监测单元(410)与所述电池连接单元(210)连接以监测电池(800)的电量情况，所述充放电测试单元(420)与所述电池连接单元(210)连接以对所述电池连接单元(210)进行充放电测试，所述主控模块(500)分别与所述电量监测单元(410)和所述充放电测试单元(420)连接。
  3. 根据权利要求2所述的电池管理系统，其特征在于，还包括第一通断控制模块(610)和第二通断控制模块(620)，所述电池连接单元(210)包括第一正极端和第一负极端，所述充放电测试单元(420)包括第一输入端和第二输入端，所述主控模块(500)分别与所述第一通断控制模块(610)和所述第二通断控制模块(620)连接以控制所述第一通断控制模块(610)和所述第二通断控制模块(620)的通断，所述第一输入端通过所述第一通断控制模块(610)与所述第一正极端连接，所述第二输入端通过所述第二通断控制模块(620)与所述第一负极端连接。
  4. 根据权利要求1所述的电池管理系统，其特征在于，所述电池连接单元(210)包括第一正极端和第一负极端，所述通断切换单元包括第一开关单元(221)和第二开关单元(222)，所述短路单元(230)包括第三输入端和第四输入端， 所述第一开关单元(221)包括第一连接端和第二连接端，所述第一连接端与所述正极输入端连接，所述主控模块(500)与所述第一开关单元(221)连接以控制所述第二连接端分别与所述第一正极端和所述第三输入端切换连接，所述第二开关单元(222)包括第三连接端和第四连接端，所述第三连接端与所述负极输入端连接，所述主控模块(500)与所述第二开关单元(222)连接以控制所述第四连接端分别与所述第一负极端和所述第四输入端切换连接。
  5. 根据权利要求1至4任一项所述的电池管理系统，其特征在于，还包括通信模块(700)，所述主控模块(500)与所述通信模块(700)连接以将电池情况发送给外部管理平台。
  6. 根据权利要求1至4任一项所述的电池管理系统，其特征在于，还包括电池箱(100)，所述电池箱(100)上设置有多个用于放置电池(800)的电池工位，所述电池连接单元(210)与所述电池工位一一对应，所述电池工位上设置有位移驱动机构，所述位移驱动机构能够驱使电池(800)靠近所述电池连接单元(210)以接合，或者驱使所述电池(800)远离所述电池连接单元(210)以分离。
  7. 根据权利要求6所述的电池管理系统，其特征在于，所述位移驱动机构包括滑动架(110)和用于放置电池(800)的电池放置模块(120)，所述滑动架(110)设于所述电池工位上，所述电池放置模块(120)与所述滑动架(110)滑动连接。
  8. 根据权利要求7所述的电池管理系统，其特征在于，所述滑动架(110)上设置有第一驱动模块(111)和齿轮(112)，所述第一驱动模块(111)与所述齿轮(112)传动连接，所述电池放置模块(120)上设有齿条，所述齿轮(112)用于与所述齿条相互啮合，所述主控模块(500)与所述第一驱动模块(111)连接以控制所述第一驱动模块(111)工作，所述第一驱动模块(111)能够驱使所述齿轮(112)转动以使得所述齿轮(112)通过所述齿条带动所述电池放置模块(120)沿着所述滑动架(110)滑动。
  9. 根据权利要求7所述的电池管理系统，其特征在于，所述电池工位上设置有连接座(130)，所述电池连接单元(210)包括第一连接柱(211)和第二连接柱(212)，所述第一连接柱(211)和所述第二连接柱(212)均通过所述通断切换单元(220)分别与所述正极输入端和所述负极输入端连接，所述第一连接柱(211)和所述第二连接柱(212)设于所述连接座(130)上，所 述电池放置模块(120)上设有正极连接单元(121)和负极连接单元(122)，所述正极连接单元(121)用于连接所述电池(800)的正极，所述负极连接单元(122)用于连接所述电池(800)的负极，所述正极连接单元(121)上设有第一槽孔(123)，所述负极连接单元(122)上设有第二槽孔(124)，所述第一槽孔(123)用于连接所述第一连接柱(211)，所述第二槽孔(124)用于连接所述第二连接柱(212)。
  10. 根据权利要求9所述的电池管理系统，其特征在于，所述第一连接柱(211)和所述第二连接柱(212)均为螺柱，所述第一槽孔(123)和所述第二槽孔(124)均为螺纹槽孔，所述连接座(130)上还设有第二驱动模块(131)，所述第二驱动模块(131)分别与所述第一连接柱(211)和所述第二连接柱(212)传动连接，所述主控模块(500)与所述第二驱动模块(131)连接以控制所述第二驱动模块(131)工作，所述第二驱动模块(131)能够驱使所述第一连接柱(211)转动以使得所述第一连接柱(211)与所述第一槽孔(123)螺纹连接或分离，以及驱使所述第二连接柱(212)转动以使得所述第二连接柱(212)与所述第二槽孔(124)螺纹连接或分离。
PCT/CN2022/090066 2021-09-24 2022-04-28 一种电池管理系统 Ceased WO2023045332A1 (zh)

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