WO2024031925A1 - 电池温度采集系统及充放电设备 - Google Patents

电池温度采集系统及充放电设备 Download PDF

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Publication number
WO2024031925A1
WO2024031925A1 PCT/CN2022/143961 CN2022143961W WO2024031925A1 WO 2024031925 A1 WO2024031925 A1 WO 2024031925A1 CN 2022143961 W CN2022143961 W CN 2022143961W WO 2024031925 A1 WO2024031925 A1 WO 2024031925A1
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Prior art keywords
module
acquisition
temperature
resistor
terminal
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English (en)
French (fr)
Inventor
彭宏伟
胡俊
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Eve Power Co Ltd
Huizhou Eve Power Co Ltd
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Eve Power Co Ltd
Huizhou Eve Power Co Ltd
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    • 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
    • H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
    • 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
    • H02J7/65—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements against overtemperature
    • 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

  • This application relates to battery management technology, such as battery temperature acquisition systems and charging and discharging equipment.
  • Batteries and their management systems are core components of new energy equipment. Since batteries have risks such as over-temperature, under-temperature, over-voltage, under-voltage, over-current, and over-humidity during use, in order to ensure the safety of batteries and equipment, it is necessary to Monitor battery status parameters in real time. Because batteries are prone to major safety issues such as combustion and explosion when over-temperature occurs, monitoring of temperature parameters is particularly important during the above monitoring process.
  • This application provides a battery temperature acquisition system and charging and discharging equipment to achieve the purpose of collecting multiple temperature signals for batteries on the premise of reducing design and manufacturing costs.
  • a battery temperature acquisition system including:
  • At least one set of acquisition circuits includes a multi-channel gating module and at least two temperature signal acquisition modules;
  • each temperature signal acquisition module is connected to the input end of the multi-channel strobe module, and the temperature signal acquisition module is configured to collect temperature signals;
  • Analog-to-Digital Converter (ADC) module the input end of the ADC module is connected to the output end of the multi-channel strobe module;
  • a first signal transmission module the output end of the ADC module is connected to the first end of the first signal transmission module
  • the first end of the second signal sensing module is connected to the control end of the multi-channel strobe module
  • control module is connected to the second end of the first signal transmission module and the second end of the second signal transmission module.
  • a multi-channel strobe module includes a first multi-channel strobe chip and a second multi-channel strobe chip;
  • the first multi-channel strobe chip and the second multi-channel strobe chip are connected to a plurality of temperature signal acquisition modules.
  • the enable signal output end of the second signal transmission module is connected to the enable end of the first multi-channel strobe chip
  • the enable signal output terminal is also connected to the enable terminal of the second multi-channel strobe chip through an enable control circuit.
  • the enable control circuit includes a first resistor, a second resistor, a third resistor and a switch tube;
  • One end of the first resistor is configured to be connected to the power terminal, the other end of the first resistor is connected to the first end of the switch tube, the second end of the switch tube is configured to be grounded, and the switch tube
  • the first terminal is also connected to the enable terminal of the second multi-channel strobe chip
  • the enable signal output terminal is connected to the control terminal of the switch tube through the second resistor, and the third resistor is connected in parallel between the control terminal and the second terminal of the switch tube.
  • the temperature signal acquisition module includes a first capacitor, a second capacitor, a fourth resistor and a fifth resistor;
  • One end of the fourth resistor is configured to be connected to the power terminal, the other end of the fourth resistor is connected to the first end of the first capacitor, and the second end of the first capacitor is configured to be grounded;
  • the first end of the first capacitor is also connected to the temperature signal output end of the temperature signal acquisition module through the fifth resistor;
  • the second capacitor is connected in parallel to the temperature signal output terminal and the ground terminal;
  • the first end and the second end of the first capacitor also serve as the first temperature signal acquisition end and the second temperature signal acquisition end of the temperature signal acquisition module.
  • the acquisition circuit further includes a filter module, and the temperature signal output end of the temperature signal acquisition module is connected to the input end of the multi-channel gating module through the filter module.
  • it also includes an isolated power module
  • the isolated power supply module is configured to power the multi-channel strobe module, the ADC module, the first signal transmission module and the second signal transmission module.
  • it also includes a communication interface, and the communication interface is connected to the control module.
  • the first signal transmission module and the second signal transmission module each include a digital isolation chip.
  • the ADC module includes a twelve-bit ADC chip.
  • embodiments of the present application also provide charging and discharging equipment, including any battery temperature acquisition system described in the embodiments of the present application.
  • this application proposes a battery acquisition system, which includes a temperature signal acquisition module, a multi-channel gating module and a control module, wherein a multi-channel gating module is configured to communicate with multiple temperature signal acquisition modules. Connection, through the control module's gating control of the multi-channel gating module, the collection of multi-channel temperature signals can be achieved with a small number of components, reducing system costs.
  • a signal transmission module (first signal transmission module, second signal transmission module) is configured between the multi-channel strobe module and the control module. Through the signal transmission module, the signal isolation transmission between the two can be realized, thereby reducing the signal interference during transmission, and ensure the safety of each module (unit) during signal transmission.
  • Figure 1 is a structural block diagram of a battery temperature acquisition system provided by an embodiment of the present application.
  • Figure 2 is a schematic configuration diagram of a multi-channel strobe chip provided in an embodiment of the present application
  • FIG. 3 is a schematic structural diagram of a temperature signal acquisition module provided in an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of an isolated power module provided in an embodiment of the present application.
  • This embodiment proposes a battery temperature acquisition method that includes at least one set of acquisition circuits.
  • One set of acquisition circuits includes a multi-channel gating module and at least two temperature signal acquisition modules; the temperature signal output end of each temperature signal acquisition module is connected to a plurality of temperature signal acquisition modules.
  • the input end of the multi-channel strobe module is connected, and the temperature signal acquisition module is configured to collect the temperature signal; the ADC module, the input end of the ADC module is connected to the output end of the multi-channel strobe module; the first signal transmission module, the output of the ADC module The end is connected to the first end of the first signal transmission module; the second signal transmission module, the first end of the second signal sensing module is connected to the control end of the multi-channel strobe module; the control module, the control module is connected to the first end.
  • the second end of the signal transmission module and the second end of the second signal transmission module are connected.
  • FIG. 1 is a diagram of a battery temperature collection system provided by an embodiment of the present application. Structural block diagram, refer to Figure 1.
  • the battery temperature acquisition system includes: multiple temperature signal acquisition modules (A1 ⁇ Mn), multiple multi-channel strobe modules (1 ⁇ n), temperature signal The acquisition module (A1 ⁇ Mn) and the multi-channel strobe module (1 ⁇ n) constitute n acquisition circuits; the battery temperature acquisition system also includes: ADC module 100, first signal transmission module 300, second signal transmission module 400 and control Module 500.
  • a temperature signal acquisition module is configured to collect a temperature signal, and the input end of a multi-channel strobe module is connected to the output ends of at least two temperature signal acquisition modules;
  • the multi-channel strobe module 1 is configured to be connected to the temperature signal acquisition module A1 to the temperature signal acquisition module An.
  • the temperature signal acquisition end of the temperature signal acquisition module is connected to the battery pack, and the temperature signal acquisition module is configured to collect the temperature signal of at least one battery module in the battery pack.
  • the structure of the temperature signal acquisition module is not limited, and the temperature signal acquisition module may or may not include a temperature acquisition chip.
  • the collection circuit in addition to realizing the collection of temperature signals, can also be configured to include a filtering module, and the filtering module is configured to filter the collected temperature signals.
  • the temperature signal output end of the temperature signal acquisition module is connected to the input end of the multi-channel gating module through the filter module.
  • the structure of the multi-way gate module is not limited.
  • the multi-way gate module can be a multi-way gate switch, which includes at least one multi-way gate chip and its peripheral circuits.
  • control module 500 may use a microcontroller (Microcontroller Unit, MCU).
  • MCU Microcontroller Unit
  • the output end of the multi-channel strobe module is connected to the input end of the ADC module 100 , and the output end of the ADC module 100 is connected to the control module 500 through the first signal transmission module 300 .
  • the multi-channel strobe module is configured to connect the signal transmission channel between the specified temperature signal acquisition end and the ADC module 100, so that the control module 500 receives the temperature acquisition signal of the specified battery module.
  • the first signal transmission module 300 is configured to implement isolated signal transmission between the control module 500 and the ADC module 100 .
  • the configuration control module 500 outputs a gating control signal to the multi-channel gating module to realize gating control of the signal transmission channel.
  • the control module 500 passes the second signal
  • the transmission module 400 is connected to the control end of the multi-channel strobe module.
  • the second signal transmission module 400 is configured to implement isolated signal transmission between the control module 500 and the multi-channel strobe module.
  • control module 500 by configuring the control module 500, the ADC module 100, and the multi-channel strobe module to achieve signal isolation transmission, the problem of damage when the above-mentioned multiple modules (units) communicate can be avoided.
  • the battery temperature acquisition system also includes an isolated power module 200.
  • the isolated power module 200 is configured as a multi-channel strobe module, an ADC module 100, a first signal transmission module 300 and a second
  • the signal transmission module 400 supplies power.
  • the system includes a temperature signal acquisition module, a multi-channel gating module and a control module.
  • a multi-channel gating module is configured to be connected to multiple temperature signal acquisition modules.
  • the control module controls The gating control of the multi-channel gating module can realize the collection of multiple temperature signals with a small number of components, reducing system costs.
  • a signal transmission module (including a first signal transmission module and a second signal transmission module) is configured between the multi-channel strobe module and the control module.
  • the signal transmission module can realize signal isolation transmission between the two, ensuring that the signal During the transmission process, each module (unit) is safe to use.
  • the system is equipped with an isolated power module to supply power to the corresponding modules and units.
  • the isolated power module can realize the isolation of the system input power and the internal power supply of the system, ensuring that each Electrical safety of modules (units).
  • a multi-channel gate module may include multiple multi-channel gate chips, and the multi-channel gate chip may be an eight-select one analog switch chip.
  • the number of multi-channel strobe chips can be set according to requirements.
  • a multi-channel strobe module includes two multi-channel strobe chips, namely a first multi-channel strobe chip and a second multi-channel strobe chip.
  • Channel strobe chip you can configure two multi-channel strobe chips to connect with twelve temperature signal acquisition modules.
  • the battery temperature acquisition system may include thirty-six temperature signal acquisition modules, six multi-way strobe modules. chip.
  • the model of the multi-channel strobe chip can be 74HC4051.
  • the multi-channel strobe module can be configured as follows: Strobe chip:
  • FIG. 2 is a schematic configuration diagram of a multi-channel strobe chip provided by an embodiment of the present application.
  • the enable signal output terminal TADC_CH_D of the second signal transmission module and the enable terminal of the first multi-channel strobe chip U17 are configured.
  • EN is connected;
  • the configuration enable signal output terminal TADC_CH_D is also connected to the enable terminal EN of the second multi-channel strobe chip U18 through the enable control circuit.
  • the enable control circuit is configured to control the enable operation of the first multi-channel strobe chip or the second multi-channel strobe chip at the same time according to the enable signal output from the enable signal output terminal.
  • the enable control circuit includes a first resistor R60, a second resistor R63, a third resistor R64 and a switch tube Q9; one end piece of the first resistor R60 is configured to connect to the power supply terminal VDD_VT_+3.3 V, the other end of the first resistor R60 is connected to the first end of the switch transistor Q9, the second end of the switch transistor Q9 is configured to be grounded, and the first end of the switch transistor Q9 is also connected to the second multi-channel strobe chip U18.
  • the enable terminal EN is connected; the enable signal output terminal TADC_CH_D is connected to the control terminal of the switch tube Q9 through the second resistor R63, and the third resistor R64 is connected in parallel between the control terminal and the second terminal of the switch tube Q9.
  • the power supply of the power terminal VDD_VT_+3.3V is provided by an isolated power module.
  • X0 ⁇ X7 in U17 and U18 are input terminals
  • a ⁇ C are address selection terminals
  • Y is the output terminal.
  • the six input terminals specified in U17 and U18 are respectively selected to be connected to the output terminals of the corresponding temperature signal acquisition modules; the address selection terminals of U17 and U18 are configured to correspond to the control of the second signal transmission module. end-to-end connection;
  • the working methods of the multi-channel strobe chip include:
  • the enable terminal of U17 When the second signal transmission module outputs a low-level enable signal (generated by the control module and transmitted through the second signal transmission module), the enable terminal of U17 is low level, U17 is normally enabled, and the enable terminal of U18 is high level (Q9 is cut off, the power supply terminal pulls up the level of the U18 enable terminal), and U18 is locked; when U17 is normally enabled, according to the address code received by the address selection terminal (generated by the control module and transmitted by the second signal transmission module ) strobes the signal channel between an input terminal and the output terminal in U17; when the second signal transmission module outputs a high-level enable signal, the enable terminal of U17 is high level, U17 is locked, and U18 is enabled The terminal is low level (Q9 is turned on, pulling down the level of the U18 enable terminal), and U18 is normally enabled; when U18 is normally enabled, one of the input terminals and output terminals in U18 is strobed according to the address code received by the address selection terminal. signal path between terminals.
  • the ADC module includes a twelve-bit ADC chip.
  • the model of the ADC chip can be ADS1118IDGSR.
  • both the first signal transmission module and the second signal transmission module include a digital isolation chip, and the selected model of the digital isolation chip may be ⁇ 141E.
  • the battery temperature acquisition system can be applied to temperature acquisition of battery packs in 400V to 1500V charging and discharging platforms (equipment).
  • two multi-channel strobe chips can be controlled through a small number of ports, which can save port resources of the corresponding modules.
  • FIG 3 is a schematic structural diagram of a temperature signal acquisition module provided by an embodiment of the present application.
  • a temperature signal acquisition module includes a first capacitor C95, a second capacitor C53, and a fourth resistor. R50 and the fifth resistor R52.
  • One end of the fourth resistor R50 is configured to be connected to the power terminal VCCA_NTC, the other end of the fourth resistor R50 is connected to the first end of the first capacitor C95, the second end of the first capacitor C95 is configured to be grounded; the third end of the first capacitor C95 One end is also connected to the temperature signal output terminal AIN_NTC through a fifth resistor; the second capacitor C53 is connected in parallel to the temperature signal output terminal AIN_NTC and the ground terminal.
  • the first end and the second end of the first capacitor C95 are also used as the first temperature signal collection terminal Cell_NTC and the second temperature signal acquisition terminal Cell_NTC_GND.
  • the first temperature signal acquisition end and the second temperature signal acquisition end serve as the input end of the temperature signal acquisition module, and the temperature signal output end serves as the output end of the temperature acquisition circuit.
  • the power supply of the power terminal VCCA_NTC is provided by an isolated power module.
  • the first capacitor C95 and the second capacitor C53 are configured as filtering
  • the fourth resistor R50 is a thermistor
  • the fifth resistor R52 is a measuring resistor.
  • FIG 4 is a schematic structural diagram of an isolated power module provided by an embodiment of the present application.
  • the isolated power module includes a first DC/DC module U7, a second DC/DC module U23, Voltage stabilizing module U9 and power supply filter circuit.
  • the model used by U7 is H0505S-1W
  • the model used by U23 is H0505S-1WR3-CS
  • the model used by U9 is TLV1117-33IDCYR.
  • U7 and U23 are used in parallel, and their peripheral circuits have a conventional configuration.
  • the devices and functions included in the peripheral circuits will not be described in detail.
  • the output of the DC/DC module is VDD_VT_+3.3V, which can be used as the input power supply of the multi-channel strobe chip in the solution shown in Figure 2, as well as the first signal transmission module and the second signal transmission module , the input power supply of the ADC module.
  • the input of the power filter circuit is VDD_VT_+3.3V
  • the output is VCCA_NTC
  • VCCA_NTC can be used as the input power supply of the temperature signal acquisition module in the solution shown in Figure 3.
  • the battery temperature acquisition system is also configured with a communication interface, and the communication interface is connected to the control module.
  • control module can be connected to an external device through a communication interface, thereby realizing software configuration, software upgrade or maintenance of the control module.
  • the communication interface adopts a Controller Area Network (CAN) interface, and accordingly, the configuration control module supports the CAN communication protocol.
  • CAN Controller Area Network
  • This embodiment provides a charging and discharging device, including any battery temperature acquisition system described in Embodiment 1.
  • the beneficial effects of the charging and discharging equipment equipped with the battery temperature acquisition system are the same as the beneficial effects of the corresponding battery temperature acquisition system in Embodiment 1, and will not be described again here.

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Abstract

本申请提供了电池温度采集系统及充放电设备，电池温度采集系统包括：至少一组采集电路，一组采集电路包括多路选通模块和至少两个温度信号采集模块；每一温度信号采集模块的温度信号输出端与多路选通模块的输入端相连接，温度信号采集模块配置为采集温度信号；ADC模块，ADC模块的输入端与多路选通模块的输出端相连接；第一信号传输模块，ADC模块的输出端与第一信号传输模块的第一端相连接；第二信号传输模块，第二信号传感模块的第一端与多路选通模块的控制端相连接；控制模块，控制模块与第一信号传输模块的第二端、第二信号传输模块的第二端相连接。

Description

电池温度采集系统及充放电设备
本申请要求在2022年08月10日提交中国专利局、申请号为202222095940.6的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及电池管理技术，例如涉及电池温度采集系统及充放电设备。
背景技术
随着新能源技术的发展和人们对船舶性能要求的提高，纯电动船舶和混合动力船舶得到越来越多的应用。
电池及其管理系统是新能源设备的核心组成部分，由于电池在使用过程中存在过温、欠温、过压、欠压、过流、过湿等风险，为保证电池和设备的安全，需要实时监控电池的状态参数。因为电池在过温状态下极易发生燃烧、爆炸等重大安全问题，因此，在上述监控过程中，对温度参数的监控尤为重要。
相关技术中，电池温度采集系统的设计、制造成本较高，且通常采用一对一通道的方式实现的电池温度采集，难以实现对单体电池温度的冗余采集。
发明内容
本申请提供了电池温度采集系统及充放电设备，以达到在降低设计、制造成本的前提下，实现针对电池的多路温度信号采集的目的。
第一方面，本申请实施例提供了一种电池温度采集系统，包括：
至少一组采集电路，一组采集电路包括多路选通模块和至少两个温度信号采集模块；
每一所述温度信号采集模块的温度信号输出端与所述多路选通模块的输入端相连接，所述温度信号采集模块配置为采集温度信号；
模数转换器(Analog-to-Digital Converter，ADC)模块，所述ADC模块的输入端与所述多路选通模块的输出端相连接；
第一信号传输模块，所述ADC模块的输出端与所述第一信号传输模块的第一端相连接；
第二信号传输模块，所述第二信号传感模块的第一端与所述多路选通模块的控制端相连接；
控制模块，所述控制模块与所述第一信号传输模块的第二端、以及所述第二信号传输模块的第二端相连接。
在一实施例中，一个多路选通模块包括第一多路选通芯片、第二多路选通芯片；
所述第一多路选通芯片以及所述第二多路选通芯片与多个温度信号采集模块相连接。
在一实施例中，所述第二信号传输模块的使能信号输出端与所述第一多路选通芯片的使能端相连接；
所述使能信号输出端还通过使能控制电路与所述第二多路选通芯片的使能端相连接。
在一实施例中，所述使能控制电路包括第一电阻、第二电阻、第三电阻以及开关管；
所述第一电阻的一端配置为连接电源端，所述第一电阻的另一端与所述开关管的第一端相连接，所述开关管的第二端配置为接地，所述开关管的第一端还与所述第二多路选通芯片的使能端相连接；
所述使能信号输出端通过所述第二电阻与所述开关管的控制端相连接，所述开关管的控制端与第二端之间并联所述第三电阻。
在一实施例中，所述温度信号采集模块包括第一电容、第二电容、第四电阻以及第五电阻；
所述第四电阻的一端配置为连接电源端，所述第四电阻的另一端与所述第一电容的第一端相连接，所述第一电容的第二端配置为接地；
所述第一电容的第一端还通过所述第五电阻与所述温度信号采集模块的温度信号输出端相连接；
所述第二电容并联于所述温度信号输出端、以及接地端；
所述第一电容的第一端以及第二端还作为所述温度信号采集模块的第一温度信号采集端、第二温度信号采集端。
在一实施例中，所述采集电路还包括滤波模块，所述温度信号采集模块的温度信号输出端通过所述滤波模块与所述多路选通模块的输入端相连接。
在一实施例中，还包括隔离电源模块；
所述隔离电源模块配置为为所述多路选通模块、所述ADC模块、所述第一信号传输模块以及所述第二信号传输模块供电。
在一实施例中，还包括通信接口，所述通信接口与所述控制模块相连接。
在一实施例中，所述第一信号传输模块以及所述第二信号传输模块中分别包括一个数字隔离芯片。
在一实施例中，所述ADC模块包括十二位ADC芯片。
第二方面，本申请实施例还提供了一种充放电设备，包括本申请实施例记载的任意一种电池温度采集系统。
本申请的有益效果在于：本申请提出一种电池采集系统，该系统包括温度信号采集模块、多路选通模块以及控制模块，其中，配置一个多路选通模块与多个温度信号采集模块相连接，通过控制模块对多路选通模块的选通控制，可以通过少量元器件实现多路温度信号的采集，降低系统成本。此外，多路选通模块与控制模块之间配置有信号传输模块(第一信号传输模块、第二信号传输模块)，通过信号传输模块可以实现两者之间的信号隔离传输，进而减小信号传输时的干扰，并保证信号传输过程中每个模块(单元)的使用安全。
附图说明
图1是本申请实施例提供的一种电池温度采集系统的结构框图；
图2是本申请实施例提供中的一种多路选通芯片的配置示意图；
图3是本申请实施例提供中的一种温度信号采集模块的结构示意图；
图4是本申请实施例提供中的一种隔离电源模块的结构示意图。
具体实施方式
实施例一
本实施例提出一种电池温度采集包括，包括至少一组采集电路，一组采集电路包括多路选通模块和至少两个温度信号采集模块；每一温度信号采集模块的温度信号输出端与多路选通模块的输入端相连接，温度信号采集模块配置为采集温度信号；ADC模块，ADC模块的输入端与多路选通模块的输出端相连接；第一信号传输模块，ADC模块的输出端与第一信号传输模块的第一端相连接；第二信号传输模块，第二信号传感模块的第一端与多路选通模块的控制端相连接；控制模块，控制模块与第一信号传输模块的第二端、第二信号传输模块的第二端相连接。
示例性的，本实施例中，采集电路，以及采集电路包括的多路选通模块和温度信号采集模块的数量根据需求设定，图1是本申请实施例提供的一种电池温 度采集系统的结构框图，参考图1，例如，在一种可实施方案中，电池温度采集系统包括：多个温度信号采集模块(A1～Mn)、多个多路选通模块(1～n)，温度信号采集模块(A1～Mn)以及多路选通模块(1～n)构成n个采集电路；电池温度采集系统还包括：ADC模块100、第一信号传输模块300、第二信号传输模块400以及控制模块500。
示例性的，本实施例中，一个温度信号采集模块设置为采集一路温度信号，一个多路选通模块的输入端与至少两个的温度信号采集模块的输出端相连接；
例如，以多路选通模块1为例，其配置为与温度信号采集模块A1～温度信号采集模块An相连接。
示例性的，本实施例中，温度信号采集模块的温度信号采集端与电池组相连接，温度信号采集模块配置为采集电池组中至少一个电池模组的温度信号。
示例性的，本实施例中，对温度信号采集模块的结构不做限定，温度信号采集模块可以包括或不包括温度采集芯片。
示例性的，本实施例中，除实现温度信号的采集外，还可以配置采集电路包括滤波模块，滤波模块配置为：对采集的温度信号进行滤波。
示例性的，温度信号采集模块的温度信号输出端通过滤波模块与多路选通模块的输入端相连接。
示例性的，本实施例中，对多路选通模块的结构不做限定，多路选通模块可以为多路选通开关，其包括至少一个多路选通芯片及其外围电路。
示例性的，本实施例中，控制模块500可以采用微控制器(Microcontroller Unit，MCU)。
参考图1，多路选通模块的输出端与ADC模块100的输入端相连接，ADC模块100的输出端通过第一信号传输模块300与控制模块500相连接。
示例性的，本实施例中，多路选通模块配置为连通指定温度信号采集端与ADC模块100之间的信号传输通道，以使控制模块500接收指定电池模组的温度采集信号。
示例性的，本实施例中，第一信号传输模块300配置为实现控制模块500与ADC模块100之间的信号隔离传输。
示例性的，本实施例中，配置控制模块500向多路选通模块输出选通控制信号，以实现信号传输通道的选通控制，示例性的，参考图1，控制模块500通过第二信号传输模块400与多路选通模块的控制端相连接。
示例性的，本实施例中，第二信号传输模块400设置为实现控制模块500与 多路选通模块之间的信号隔离传输。
示例性的，本实施例中，通过配置控制模块500与ADC模块100以及多路选通模块之间实现信号隔离传输，可以避免上述多个模块(单元)进行通信时出现损坏的问题。
示例性的，参考图1，本实施例中，电池温度采集系统还包括隔离电源模块200，隔离电源模块200配置为为多路选通模块、ADC模块100、第一信号传输模块300以及第二信号传输模块400供电。
本实施例提出一种电池采集系统，该系统包括温度信号采集模块、多路选通模块以及控制模块，其中，配置一个多路选通模块与多个温度信号采集模块相连接，通过控制模块对多路选通模块的选通控制，可以通过少量元器件实现多路温度信号的采集，降低系统成本。此外，多路选通模块与控制模块之间配置有信号传输模块(包括第一信号传输模块、第二信号传输模块)，通过信号传输模块可以实现两者之间的信号隔离传输，可以保证信号传输过程中每个模块(单元)的使用安全，同时，该系统中配置隔离电源模块为对应的模块以及单元供电，通过隔离电源模块可以实现系统输入电源与系统内部供电电源的隔离，保证每个模块(单元)的用电安全。
示例性的，在一种可实施方案中，一个多路选通模块可以包括多个多路选通芯片，多路选通芯片可以采用八选一模拟开关芯片。
示例性的，本方案中，多路选通芯片的数量可以根据需求设定，例如，一个多路选通模块包括两个多路选通芯片，即第一多路选通芯片和第二多路选通芯片，可以配置两个多路选通芯片与十二个温度信号采集模块相连接。
示例性的，按照上述温度信号采集模块与多路选通模块的配比关系，在一种可实施方案中，电池温度采集系统可以包括三十六个温度信号采集模块、六个多路选通芯片。
示例性的，在一种可实施方案中，多路选通芯片的型号可以为74HC4051，采用此型号芯片时，若配置两个芯片构成一个多路选通模块，则可以按照如下方式配置多路选通芯片：
图2是本申请实施例提供的一种多路选通芯片的配置示意图，参考图2，配置第二信号传输模块的使能信号输出端TADC_CH_D与第一多路选通芯片U17的使能端EN相连接；配置使能信号输出端TADC_CH_D还通过使能控制电路与第二多路选通芯片U18的使能端EN相连接。
示例性的，本方案中，使能控制电路配置为根据使能信号输出端输出的使能信号在同一时刻控制第一多路选通芯片或者第二多路选通芯片使能工作。
参考图2，作为一种可实施方案，使能控制电路包括第一电阻R60、第二电阻R63、第三电阻R64以及开关管Q9；第一电阻R60的一端片配置为连接电源端VDD_VT_+3.3V，第一电阻R60的另一端与开关管Q9的第一端相连接，开关管Q9的第二端配置为接地，开关管Q9的第一端还与第二多路选通芯片U18的使能端EN相连接；使能信号输出端TADC_CH_D通过第二电阻R63与开关管Q9的控制端相连接，开关管Q9的控制端与第二端之间并联第三电阻R64。
示例性的，在图1所示方案的基础上，本方案中，电源端VDD_VT_+3.3V的电源由隔离电源模块提供。
示例性的，本方案中，U17、U18中的X0～X7为输入端，A～C为地址选择端，Y为输出端。
示例性的，本方案中，分别选定U17、U18中指定的六个输入端与对应温度信号采集模块的输出端相连接；配置U17、U18的地址选择端与第二信号传输模块对应的控制端相连接；
配置U17、U18的输出端与ADC模块的输入端相连接。
示例性的，本方案中，多路选通芯片的工作方式包括：
第二信号传输模块输出低电平使能信号(由控制模块生成，经第二信号传输模块传输)时，U17的使能端为低电平，U17正常使能，U18的使能端为高电平(Q9截止，电源端拉高U18使能端的电平)，U18锁止；U17正常使能时，根据地址选择端接收到的地址码(由控制模块生成，经第二信号传输模块传输)选通U17中的一个输入端与输出端之间的信号通道；第二信号传输模块输出高电平使能信号时，U17的使能端为高电平，U17锁止，U18的使能端为低电平(Q9导通，拉低U18使能端的电平)，U18正常使能；U18正常使能时，根据地址选择端接收到的地址码选通U18中的一个输入端与输出端之间的信号通道。
示例性的，ADC模块包括十二位ADC芯片，本方案中，ADC芯片选用的型号可以为ADS1118IDGSR。
示例性的，本方案中，第一信号传输模块以及第二信号传输模块中均包括一个数字隔离芯片，数字隔离芯片选用的型号可以为π141E。
示例性的，本方案中，基于上述多个器件的选型，电池温度采集系统可以应用于400V～1500V充放电平台(设备)中电池组的温度采集。
示例性的，本方案中，基于使能控制电路可以通过少量的端口实现对两个多路选通芯片的控制，可以节约对应模块的端口资源。
图3是本申请实施例提供的一种温度信号采集模块的结构示意图，参考图3， 在一种可实施方案中，一个温度信号采集模块包括第一电容C95、第二电容C53、第四电阻R50以及第五电阻R52。
第四电阻R50的一端配置为连接电源端VCCA_NTC，第四电阻R50的另一端与第一电容C95的第一端相连接，第一电容C95的第二端配置为接地；第一电容C95的第一端还通过第五电阻与温度信号输出端AIN_NTC相连接；第二电容C53并联于温度信号输出端AIN_NTC、接地端，第一电容C95的第一端以及第二端还作为第一温度信号采集端Cell_NTC、第二温度信号采集端Cell_NTC_GND。
示例性的，本方案中，第一温度信号采集端以及第二温度信号采集端作为温度信号采集模块的输入端，温度信号输出端作为温度采集电路的输出端。
示例性的，在图1所示方案的基础上，本方案中，电源端VCCA_NTC的电源由隔离电源模块提供。
示例性的，本方案中，第一电容C95、第二电容C53配置为滤波，第四电阻R50为热敏电阻、第五电阻R52为测量电阻。
图4是本申请实施例提供的一种隔离电源模块的结构示意图，参考图4，在一种可实施方案中，隔离电源模块包括第一DC/DC模块U7、第二DC/DC模块U23、稳压模块U9以及电源滤波电路。
示例性的，本方案中，U7采用的型号为H0505S-1W，U23采用的型号为H0505S-1WR3-CS，U9采用的型号为TLV1117-33IDCYR。
示例性的，本方案中，U7与U23并联使用，其外围电路为常规配置，外围电路包括的器件和功能不再详述。
示例性的，本方案中，DC/DC模块的输出为VDD_VT_+3.3V，其可以作为图2所示方案中多路选通芯片的输入电源，以及第一信号传输模块、第二信号传输模块、ADC模块的输入电源。
示例性的，本方案中，电源滤波电路的输入为VDD_VT_+3.3V，输出为VCCA_NTC，其中，VCCA_NTC可以作为图3所示方案中，温度信号采集模块的输入电源。
示例性的，在图1所示方案的基础上，在一种可实施方案中，电池温度采集系统还配置有通信接口，通信接口与控制模块相连接。
示例性的，本方案中，可以通过通信接口将控制模块与外部设备相连接，进而实现针对控制模块的软件配置、软件升级或维修等。
示例性的，在一种可实施方案中，通信接口采用控制器域网(Controller Area Network，CAN)接口，相应的，配置控制模块支持CAN通信协议。
实施例二
本实施例提出一种充放电设备，包括实施例一记载的任意一种电池温度采集系统。
本实施例中，配置电池温度采集系统的充放电设备的有益效果与实施例一中，对应电池温度采集系统的有益效果相同，在此不再赘述。

Claims (10)

  1. 一种电池温度采集系统，包括：
    至少一组采集电路，一组采集电路包括多路选通模块和至少两个温度信号采集模块；
    每一温度信号采集模块的温度信号输出端与所述多路选通模块的输入端相连接，所述温度信号采集模块配置为采集温度信号；
    模数转换器ADC模块，所述ADC模块的输入端与所述多路选通模块的输出端相连接；
    第一信号传输模块，所述ADC模块的输出端与所述第一信号传输模块的第一端相连接；
    第二信号传输模块，所述第二信号传感模块的第一端与所述多路选通模块的控制端相连接；
    控制模块，所述控制模块与所述第一信号传输模块的第二端、以及所述第二信号传输模块的第二端相连接。
  2. 如权利要求1所述的电池温度采集系统，其中，一个多路选通模块包括第一多路选通芯片、以及第二多路选通芯片；
    所述第一多路选通芯片以及所述第二多路选通芯片与多个温度信号采集模块相连接。
  3. 如权利要求2所述的电池温度采集系统，其中，所述第二信号传输模块的使能信号输出端与所述第一多路选通芯片的使能端相连接；
    所述使能信号输出端还通过使能控制电路与所述第二多路选通芯片的使能端相连接；
    所述使能控制电路包括第一电阻、第二电阻、第三电阻以及开关管；
    所述第一电阻的一端配置为连接电源端，所述第一电阻的另一端与所述开关管的第一端相连接，所述开关管的第二端配置为接地，所述开关管的第一端还与所述第二多路选通芯片的使能端相连接；
    所述使能信号输出端通过所述第二电阻与所述开关管的控制端相连接，所述开关管的控制端与第二端之间并联所述第三电阻。
  4. 如权利要求1所述的电池温度采集系统，其中，所述温度信号采集模块包括第一电容、第二电容、第四电阻以及第五电阻；
    所述第四电阻的一端配置为连接电源端，所述第四电阻的另一端与所述第一电容的第一端相连接，所述第一电容的第二端配置为接地；
    所述第一电容的第一端还通过所述第五电阻与所述温度信号采集模块的温度信号输出端相连接；
    所述第二电容并联于所述温度信号输出端、以及接地端；
    所述第一电容的第一端以及第二端还作为所述温度信号采集模块的第一温度信号采集端、第二温度信号采集端。
  5. 如权利要求1至4任一项所述的电池温度采集系统，其中，所述采集电路还包括滤波模块，所述温度信号采集模块的温度信号输出端通过所述滤波模块与所述多路选通模块的输入端相连接。
  6. 如权利要求1至4任一项所述的电池温度采集系统，还包括隔离电源模块；
    所述隔离电源模块配置为为所述多路选通模块、所述ADC模块、所述第一信号传输模块以及所述第二信号传输模块供电。
  7. 如权利要求1至4任一项所述的电池温度采集系统，还包括通信接口，所述通信接口与所述控制模块相连接。
  8. 如权利要求1至4任一项所述的电池温度采集系统，其中，所述第一信号传输模块以及所述第二信号传输模块中均包括一个数字隔离芯片。
  9. 如权利要求1至4任一项所述的电池温度采集系统，其中，所述ADC模块包括十二位ADC芯片。
  10. 一种充放电设备，包括权利要求1至9任一所述的电池温度采集系统。
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