WO2023159984A1 - Power battery system, electric vehicle, and design method - Google Patents

Power battery system, electric vehicle, and design method Download PDF

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Publication number
WO2023159984A1
WO2023159984A1 PCT/CN2022/126853 CN2022126853W WO2023159984A1 WO 2023159984 A1 WO2023159984 A1 WO 2023159984A1 CN 2022126853 W CN2022126853 W CN 2022126853W WO 2023159984 A1 WO2023159984 A1 WO 2023159984A1
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WIPO (PCT)
Prior art keywords
power battery
battery system
voltage
power
assembly
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Application number
PCT/CN2022/126853
Other languages
French (fr)
Chinese (zh)
Inventor
周琪
孙焕丽
陈永胜
裴小娟
王文健
杨明
赵名翰
赵壮
于鹏
尹芳芳
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中国第一汽车股份有限公司
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Publication of WO2023159984A1 publication Critical patent/WO2023159984A1/en

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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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/583—Devices or arrangements for the interruption of current in response to current, e.g. fuses
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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 invention belongs to the field of battery technology, and specifically relates to a power battery system, an electric vehicle and a design method.
  • the traditional new energy power battery assembly, DC/DC, and charger are arranged in a dispersed manner, and the electrical connection between each component is realized through a high-voltage wire harness, which causes power loss and affects the weight and cost of the vehicle.
  • the high-voltage power distribution unit and battery controller are built into the battery pack, which are more fragile than the battery cells.
  • non-energy storage components such as the high-voltage power unit and battery controller fail, the whole package needs to be disassembled for inspection and maintenance. Maintenance is time-consuming and labor-intensive, and the maintainability is poor.
  • the invention provides a power battery system, an electric vehicle and a design method. Through the integration of the energy management unit and the power battery unit, the high integration of the high-voltage system is realized, the weight and cost of the whole vehicle are reduced, and the existing transmission power is solved. The above-mentioned problems that the battery exists.
  • a power battery system including an energy management unit 1 and a power battery unit;
  • the energy management unit 1 includes a power supply device, a control device, and a power distribution device;
  • the power battery unit includes an energy storage device, a thermal management device, and a sampling device;
  • the power distribution device is connected in series between the high-voltage interface of the power battery unit and the DC bus interface of the electrical device;
  • the power distribution device and the control device are connected through a low-voltage wire harness;
  • the control device provides the action signal of the power distribution device, and the power distribution
  • the action of the device realizes opening and closing;
  • the energy storage device is fixed on the thermal management device;
  • the sampling device and the energy storage device are connected by a low-voltage wiring harness to realize signal transmission.
  • the power supply device includes DC/DC and OBC, which are used for AC-DC conversion, buck-boost conversion, and meet the voltage conversion requirements of the charging process of the power battery unit;
  • the control device is used for receiving the voltage and temperature signals sent by the power battery unit, And the instructions issued by the vehicle controller make the charging and discharging process controllable;
  • the power distribution device includes a main positive relay, a main negative relay, a fast charging relay and a fuse, which are used to receive instructions from the control device to realize opening and closing .
  • the heat management device includes an upper plate, a lower plate, and water inlet and outlet pipes; the upper plate is flat, and the lower plate is punched with flow channels; the upper plate and the lower plate are fixed at the joints with the water inlet and outlet pipes after being fixedly connected; the energy storage
  • the device includes an upper box body 2, a support plate assembly 3, a cell assembly 4, a box frame 5, a composite water-cooled plate 6, a low-voltage sampling device, a high-voltage connection device, a heat insulation device and a buffer device; the energy management unit 1
  • the lower end of the housing is fixed to the upper box body 2; the lower end of the upper box body 2 cooperates with the support plate assembly 3; the support plate assembly 3 is fixed on the box body frame 5 to support the energy management unit 1
  • the lower end of the cell assembly 4 is in contact with the composite water-cooled plate 6; the composite water-cooled plate 6 is fixed to the box frame 5 to realize the load bearing of the cell; the low-voltage sampling device, the high-voltage connection device and the cell
  • the lower end of the shell of the energy management unit 1 is sealed with the upper box body 2 through a gasket or sealant; the upper plate and the lower plate are welded to the joints of the water inlet and outlet pipes after being connected by brazing; the heat insulation device and the The buffer device is bonded by structural glue or double-sided tape; the cell set 4 and the box frame 5 are snapped together by a non-metallic transition piece to achieve insulation and position limitation.
  • the composite water-cooled plate 6 includes a water-cooled plate assembly 6a and a bottom plate assembly 6b; the water-cooled plate assembly 6a and the bottom plate assembly 6b are fixedly connected; the water-cooled plate assembly 6a is embedded with a cooling water channel, and the cooling water flow The channel is in contact with the cell assembly 4 to realize cooling or heating.
  • An electric vehicle includes a power battery system.
  • a design method for a power battery system used for designing a power battery system, comprising the following steps:
  • Step 1 arranging the cell set 4 in the power battery unit
  • Step 2 load distribution to the power battery unit
  • Step 3 designing the support beam of the box frame 5 in the power battery unit
  • Step 4 Design the energy management unit 1, design the thermal management device and the sampling device in the power battery unit, so as to complete the design of the power battery system.
  • the concrete method of described step 2 is as follows:
  • the center of mass of the load in each area of the battery system should be in the area centered on the geometric center of the boundary of the center of mass, and the number x of the internal lifting points of the battery system, that is, the fixed points between the battery and the body, satisfies:
  • G is the total load of the battery system box; A is the size of the battery system in the X direction; B is the size of the battery system in the Y direction.
  • the concrete method of described step 3 is as follows:
  • the supporting beams of the box frame 5 are different according to their functions, and the design requirements are as follows:
  • the expansion surface of the cell is arranged along the X direction, and the strength of the frame in the Y direction resists the cell;
  • Weight-bearing support beam the water-cooled plate assembly 6a is fixedly connected to the box frame 5, and the water-cooled plate assembly 6a is divided into multiple areas by the box frame 5 support beam, which meets the first-order mode of the battery assembly and components ⁇ 30Hz-45Hz;
  • L is the width of the sealing surface between the box frame 5 and the upper box 2 .
  • the present invention realizes the high integration of the high-voltage system and realizes the weight reduction and cost reduction at the vehicle level;
  • the cell assembly of the present invention can adjust the gap between cells for different cell material systems, so that different systems can share the battery box; the cell assembly can be replaced or upgraded to match the needs of the vehicle.
  • the total positive and negative outputs of the power battery system are on the same side as the half-voltage positive and negative outputs, and a fuse is connected in series between the half-voltage positive and negative electrodes. The position of the fuse and the total positive and total negative output electrodes are arranged in the energy management device. It is easy to replace and repair when the fuse is damaged due to vehicle failure;
  • the cells are arranged in even columns, and the fuses connected in series between sets N/2 and N/2+1, including excitation fuses, intelligent fuses, etc. Timely disconnection under abnormal working conditions such as collision, short circuit or thermal runaway improves the safety of the battery system.
  • Fig. 1 is the structural representation of energy storage device among the present invention
  • Fig. 2 is the structural representation of composite water-cooled plate among the present invention
  • Fig. 3 is a flow chart of the design method of the power battery system in the present invention.
  • Fig. 4 is a schematic structural diagram of an energy storage unit and an energy management unit
  • Figure 5 is a schematic diagram of the requirements for the position of the center of mass
  • Fig. 6 is a schematic structural diagram of the power battery system in the present invention.
  • a power battery system includes an energy management unit 1 and a power battery unit.
  • the energy management unit 1 includes a power supply device, a control device and a power distribution device.
  • the power battery unit includes an energy storage device, a heat management device and a sampling device.
  • the energy management unit and the power battery unit Through the integration of the energy management unit and the power battery unit, the high-level integration of the high-voltage system can be realized, and the weight and cost of the whole vehicle can be reduced.
  • the power distribution device is connected in series between the high-voltage interface of the power battery unit and the DC bus interface of the electrical device; the power distribution device and the control device are connected through a low-voltage wire harness; the control device provides the action signal of the power distribution device, and the power distribution The action of the device realizes opening and closing; the energy storage device is fixed on the thermal management device; the sampling device and the energy storage device are connected by a low-voltage wiring harness to realize signal transmission.
  • the power supply device includes DC/DC and OBC, which are used for AC-DC conversion, buck-boost conversion, and meet the voltage conversion requirements of the charging process of the power battery unit.
  • the control device is used to receive the voltage and temperature signals sent by the power battery unit, as well as the instructions issued by the vehicle controller, so that the charging and discharging process is controllable.
  • the power distribution device includes a main positive relay, a main negative relay, a fast charging relay and a fuse, which are used to receive instructions from the control device to realize switching on and off.
  • the thermal management device includes an upper plate, a lower plate, and water inlet and outlet pipes; the upper plate is flat, and the lower plate is punched with flow channels; the upper plate and the lower plate are connected by brazing, and then welded to the joints of the water inlet and outlet pipes.
  • the energy storage device includes an upper box body 2, a support plate assembly 3, a cell assembly 4, a box frame 5, a composite water-cooled plate 6, a low-voltage sampling device, a high-voltage connection device, a heat insulation device and a buffer device
  • the lower end of the shell of the energy management unit 1 is fixed to the upper box body 2; the lower end of the upper box body 2 cooperates with the support plate assembly 3; the support plate assembly 3 is fixed on the box frame 5, Realize the support for the energy management unit 1; the lower end of the cell set 4 is in contact with the composite water-cooled plate 6; the composite water-cooled plate 6 and the box frame 5 are integrated as 4 cells by welding, screwing, bonding, etc.
  • the bearing structure of the assembly, the low-voltage sampling device, the high-voltage connection device and the cell assembly 4 are laser welded; the heat insulation device and the buffer device are bonded by structural adhesive or double-sided adhesive; the cell assembly 4 and the box
  • the frame 5 is insulated and limited by clamping non-metallic transition pieces; the sampling device cooperates with the cell set 4 to collect the voltage and temperature information of the cell set 4 and report it to the control device.
  • the composite water-cooled plate 6 includes a water-cooled plate assembly 6a and a bottom plate assembly 6b; the water-cooled plate assembly 6a and the bottom plate assembly 6b are fixedly connected; the water-cooled plate assembly 6a is embedded with a cooling water flow
  • the cooling water flow channel is in contact with the cell set 4 to realize cooling or heating.
  • the bottom plate assembly 6b is made of high-strength steel or high-strength composite material to protect the entire power supply system, preventing the leakage of coolant or even damage to the battery cells caused by bumping at the bottom.
  • An electric vehicle includes a power battery system, which includes an energy management unit 1 and a power battery unit.
  • the energy management unit 1 includes a power supply device, a control device and a power distribution device.
  • the power battery unit includes an energy storage device, a heat management device and a sampling device.
  • the power distribution device is connected in series between the high-voltage interface of the power battery unit and the DC bus interface of the electrical device; the power distribution device and the control device are connected through a low-voltage wire harness; the control device provides the action signal of the power distribution device, and the power distribution
  • the action of the device realizes opening and closing; the energy storage device is fixed on the thermal management device; the sampling device and the energy storage device are connected by a low-voltage wiring harness to realize signal transmission.
  • the electric vehicle including the power battery system described in Embodiment 1 realizes the high integration of the high-voltage system through the integration of the energy management unit and the power battery unit, and realizes weight reduction and cost reduction at the vehicle level.
  • a design method of a power battery system is used to design a power battery system, including the following steps:
  • Step 1 arranging the cell set 4 in the power battery unit
  • step one the concrete method of described step one is as follows:
  • the cell set 4 includes a variety of cell forms such as square shell cells, soft pack cells, cylindrical cells, etc.
  • the cells are arranged in 4 even-numbered columns, and fuses are connected in series between sets N/2 and sets N/2+1, including excitation fuses, intelligent fuses, and other fuses that can independently control on-off, so as to realize collision and short-circuit in the vehicle or thermal runaway and other abnormal working conditions to disconnect in time to improve the safety of the battery system.
  • the battery cell assembly 4 of the present invention can adjust the battery cell gap for different battery material systems, so that different systems can share the battery box; the battery cell assembly can be replaced or upgraded to match the needs of the vehicle.
  • the total positive and negative outputs of the power battery system are on the same side as the half-voltage positive and negative outputs, and a fuse is connected in series between the half-voltage positive and negative electrodes.
  • the position of the fuse and the total positive and total negative output electrodes are arranged in the energy management device. It is easy to replace and repair when the fuse is damaged due to vehicle failure.
  • Step 2 load distribution to the power battery unit
  • the center of mass of the load in each area of the battery system should be in the area centered on the geometric center of the boundary of the center of mass, and the number x of the internal lifting points of the battery system, that is, the fixed points between the battery and the body, satisfies:
  • G is the total load of the battery system box; A is the size of the battery system in the X direction; B is the size of the battery system in the Y direction.
  • Step 3 designing the support beam of the box frame 5 in the power battery unit
  • the supporting beams of the box frame 5 are different according to their functions, and the design requirements are as follows:
  • the expansion surface of the cell is arranged along the X direction, and the strength of the frame in the Y direction resists the cell;
  • Weight-bearing support beam the water-cooled plate assembly 6a is fixedly connected to the box frame 5, and the water-cooled plate assembly 6a is divided into multiple areas by the box frame 5 support beam, which meets the first-order mode of the battery assembly and components ⁇ 30Hz-45Hz;
  • L is the width of the sealing surface between the box frame 5 and the upper box 2 .
  • Step 4 Design the energy management unit 1, design the thermal management device and the sampling device in the power battery unit, so as to complete the design of the power battery system.
  • the power supply device includes DC/DC and OBC, which are used for AC-DC conversion, buck-boost conversion, and meet the voltage conversion requirements of the charging process of the power battery unit.
  • the control device is used to receive the voltage and temperature signals sent by the power battery unit, as well as the instructions issued by the vehicle controller, so that the charging and discharging process is controllable.
  • the power distribution device includes a main positive relay, a main negative relay, a fast charging relay and a fuse, which are used to receive instructions from the control device to realize switching on and off.
  • the thermal management device includes an upper plate, a lower plate, and water inlet and outlet pipes; the upper plate is flat, and the lower plate is punched with flow channels; the upper plate and the lower plate are connected by brazing, and then welded to the joints of the water inlet and outlet pipes.
  • the sampling device cooperates with the cell set 4 to collect voltage and temperature information of the cell set 4 and report to the control device.
  • a first feature being “on” or “under” a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them.
  • “above”, “above” and “above” the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
  • “Below”, “beneath” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
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Abstract

A power battery system, an electric vehicle, and a design method for a power battery system. The power battery system comprises an energy management unit (1) and a power battery unit; the energy management unit (1) comprises a power supply device, a control device, and a power distribution device; the power battery unit comprises an energy storage device, a thermal management device, and a sampling device; the power distribution device is connected in series between a high-voltage interface of the power battery unit and a direct-current bus interface of an electrical device; the power distribution device and the control device are connected by means of a low-voltage wire harness; the control device provides a power distribution device action signal, and the power distribution device acts to realize turn-on and turn-off; the energy storage device is fixed on the thermal management device; the sampling device and the energy storage device are connected by means of a low-voltage wire harness to realize signal transmission. In the present invention, by means of integration of the energy management unit and the power battery unit, high integration of a high-voltage system is realized, and weight reduction and cost reduction of a whole vehicle are realized.

Description

一种动力电池系统、电动车辆及设计方法A kind of power battery system, electric vehicle and design method 技术领域technical field
本发明属于电池技术领域，具体的说是一种动力电池系统、电动车辆及设计方法。The invention belongs to the field of battery technology, and specifically relates to a power battery system, an electric vehicle and a design method.
背景技术Background technique
传统新能源动力电池总成与DC/DC、充电机分散布置，通过高压线束实现各部件间的电连接，造成电能损耗的同时影响了整车重量和成本。The traditional new energy power battery assembly, DC/DC, and charger are arranged in a dispersed manner, and the electrical connection between each component is realized through a high-voltage wire harness, which causes power loss and affects the weight and cost of the vehicle.
传统动力电池方案中，高压配电单元和电池控制器内置于电池包，其相较电芯易损坏，当高压电单元和电池控制器等非储能部件发生故障需要整包拆卸进行检查和维修，耗时耗力，可维修性差。In the traditional power battery solution, the high-voltage power distribution unit and battery controller are built into the battery pack, which are more fragile than the battery cells. When non-energy storage components such as the high-voltage power unit and battery controller fail, the whole package needs to be disassembled for inspection and maintenance. Maintenance is time-consuming and labor-intensive, and the maintainability is poor.
同时包内存在较复杂的高压电气连接，造成了动力电池系统布置空间的浪费。At the same time, there are relatively complex high-voltage electrical connections in the package, resulting in a waste of space for the layout of the power battery system.
发明内容Contents of the invention
本发明提供了一种动力电池系统、电动车辆及设计方法，通过能量管理单元和动力电池单元的集成，实现高压系统的高度集成，实现整车级别的降重降本，解决了现有传动动力电池存在的上述问题。The invention provides a power battery system, an electric vehicle and a design method. Through the integration of the energy management unit and the power battery unit, the high integration of the high-voltage system is realized, the weight and cost of the whole vehicle are reduced, and the existing transmission power is solved. The above-mentioned problems that the battery exists.
本发明技术方案结合附图说明如下：The technical scheme of the present invention is described as follows in conjunction with accompanying drawing:
一种动力电池系统，包括能量管理单元1和动力电池单元；所述能量管理单元1包括电源装置、控制装置和配电装置；所述动力电池单元包括储能装置、热管理装置和采样装置；所述配电装置串联在动力电池单元的高压接口与电装装置的直流母线接口之间；所述配电装置与控制装置通过低压线束连接；所述控制装置提供配电装置动作信号，配电装置动作实现开通和关断；所述储能装置固定在热管理装置上；所述采样装置与储能装置由低压线束连接，实现信号的传输。A power battery system, including an energy management unit 1 and a power battery unit; the energy management unit 1 includes a power supply device, a control device, and a power distribution device; the power battery unit includes an energy storage device, a thermal management device, and a sampling device; The power distribution device is connected in series between the high-voltage interface of the power battery unit and the DC bus interface of the electrical device; the power distribution device and the control device are connected through a low-voltage wire harness; the control device provides the action signal of the power distribution device, and the power distribution The action of the device realizes opening and closing; the energy storage device is fixed on the thermal management device; the sampling device and the energy storage device are connected by a low-voltage wiring harness to realize signal transmission.
所述电源装置包括DC/DC和OBC，用于交直流变换、升降压变换，满足动力电池单元充电过程电压变换需求；所述控制装置，用于接收动力电池单元发送的电压和温度信号，以及整车控制器下达的指令，使得充放电过程可控；所述配电装置包括主正继电器、主负继电器、快充继电器和熔断器，用于接收控制装置的指令，实现开通与关断。The power supply device includes DC/DC and OBC, which are used for AC-DC conversion, buck-boost conversion, and meet the voltage conversion requirements of the charging process of the power battery unit; the control device is used for receiving the voltage and temperature signals sent by the power battery unit, And the instructions issued by the vehicle controller make the charging and discharging process controllable; the power distribution device includes a main positive relay, a main negative relay, a fast charging relay and a fuse, which are used to receive instructions from the control device to realize opening and closing .
所述热管理装置包括上板、下板和进出水管；所述上板平整，下板冲有流道；所述上板和下板固定连接后在与进出水管的接头固定；所述储能装置包括上箱体2、支撑板总成3、电芯集合4、箱体边框5、复合水冷板6、低压采样装置、高压连接装置、隔热装置和缓冲装置；所述能量管理单元1的壳体的下端与上箱体2固定；所述上箱体2的下端与支撑板总成3配合；所述支撑板总成3固定在箱体边框5上，实现对能量管理单元1的支撑；所述电芯集合4的下端与复合水冷板6接触；所述复合水冷板6与箱体边框5固定，实现对电芯的承载；所述低压采样装置、高压连接装置与电芯集合4激光焊接；所述隔热装置与缓冲装置固定连接；所述电芯集合4与箱体边框5卡接；所述采样装置与电芯集合4配合，用于采集电芯集合4的电压和温度信息，并且上报给控制装置。The heat management device includes an upper plate, a lower plate, and water inlet and outlet pipes; the upper plate is flat, and the lower plate is punched with flow channels; the upper plate and the lower plate are fixed at the joints with the water inlet and outlet pipes after being fixedly connected; the energy storage The device includes an upper box body 2, a support plate assembly 3, a cell assembly 4, a box frame 5, a composite water-cooled plate 6, a low-voltage sampling device, a high-voltage connection device, a heat insulation device and a buffer device; the energy management unit 1 The lower end of the housing is fixed to the upper box body 2; the lower end of the upper box body 2 cooperates with the support plate assembly 3; the support plate assembly 3 is fixed on the box body frame 5 to support the energy management unit 1 The lower end of the cell assembly 4 is in contact with the composite water-cooled plate 6; the composite water-cooled plate 6 is fixed to the box frame 5 to realize the load bearing of the cell; the low-voltage sampling device, the high-voltage connection device and the cell assembly 4 Laser welding; the heat insulation device is fixedly connected to the buffer device; the battery cell set 4 is clamped with the box frame 5; the sampling device cooperates with the battery cell set 4 to collect the voltage and temperature of the battery cell set 4 information and report to the control device.
所述能量管理单元1的壳体的下端通过密封垫或密封胶与上箱体2密封；所述上板和下板通过钎焊连接后在与进出水管的接头焊接；所述隔热装置与缓冲装置通过结构胶或双面胶进行粘接；所述电芯集合4与箱体边框5通过非金属过渡件卡接实现绝缘和限位。The lower end of the shell of the energy management unit 1 is sealed with the upper box body 2 through a gasket or sealant; the upper plate and the lower plate are welded to the joints of the water inlet and outlet pipes after being connected by brazing; the heat insulation device and the The buffer device is bonded by structural glue or double-sided tape; the cell set 4 and the box frame 5 are snapped together by a non-metallic transition piece to achieve insulation and position limitation.
所述复合水冷板6包括水冷板总成6a和底部板总成6b；所述水冷板总成6a和底部板总成6b固定连接；所述水冷板总成6a内嵌冷却水流道，冷却水流道与电芯集合4接触，实现冷却或加热。The composite water-cooled plate 6 includes a water-cooled plate assembly 6a and a bottom plate assembly 6b; the water-cooled plate assembly 6a and the bottom plate assembly 6b are fixedly connected; the water-cooled plate assembly 6a is embedded with a cooling water channel, and the cooling water flow The channel is in contact with the cell assembly 4 to realize cooling or heating.
一种电动车辆，包括一种动力电池系统。An electric vehicle includes a power battery system.
一种动力电池系统的设计方法，用于设计一种动力电池系统，包括以下步骤：A design method for a power battery system, used for designing a power battery system, comprising the following steps:
步骤一、布置动力电池单元中的电芯集合4；Step 1, arranging the cell set 4 in the power battery unit;
步骤二、对动力电池单元进行载荷分配； Step 2, load distribution to the power battery unit;
步骤三、对动力电池单元中的箱体边框5的支撑梁进行设计； Step 3, designing the support beam of the box frame 5 in the power battery unit;
步骤四、对能量管理单元1进行设计，对动力电池单元中热管理装置和采样装置进行设计，从而完成对动力电池系统的设计。Step 4: Design the energy management unit 1, design the thermal management device and the sampling device in the power battery unit, so as to complete the design of the power battery system.
所述步骤一的具体方法如下：The concrete method of described step one is as follows:
将熔断器置于直流母线输出极一侧，电芯集合1、2、3……N需满足：Place the fuse on the side of the output pole of the DC bus, and the cell sets 1, 2, 3...N need to meet:
U 1+……+U N/2＝U N/2+1+……+U N＝U O/2，其中N为偶数，且N≥4； U 1 +...+U N/2 ＝U N/2+1 +...+U N ＝U O /2, wherein N is an even number, and N≥4;
其中，N为电芯集合数；U N为电芯集合N输出端电压；U O为直流母线输出端电压。 Among them, N is the number of cell sets; U N is the output voltage of cell set N; U O is the output voltage of the DC bus.
所述步骤二的具体方法如下：The concrete method of described step 2 is as follows:
电池系统各区域载荷的质心应处于以质心边界几何中心为中心的区域内，且电池系统内部吊点即电池与车身固定点数量x满足：The center of mass of the load in each area of the battery system should be in the area centered on the geometric center of the boundary of the center of mass, and the number x of the internal lifting points of the battery system, that is, the fixed points between the battery and the body, satisfies:
x≥1，当G/A*B≤100kg/m 2 x≥1, when G/A*B≤100kg/ m2
x≥2，当100kg/m 2＜G/A*B≤250kg/m 2 x≥2, when 100kg/m 2 <G/A*B≤250kg/m 2
x≥3，当G/A*B＞250kg/m 2 x≥3, when G/A*B＞250kg/m 2
其中，G为电池系统箱体总载荷；A电池系统X方向尺寸；B为电池系统Y方向尺寸。Among them, G is the total load of the battery system box; A is the size of the battery system in the X direction; B is the size of the battery system in the Y direction.
所述步骤三的具体方法如下：The concrete method of described step 3 is as follows:
所述箱体边框5的支撑梁根据作用不同，设计要求如下：The supporting beams of the box frame 5 are different according to their functions, and the design requirements are as follows:
1)抵抗电芯膨胀的支撑梁：电芯膨胀面沿X方向排布，Y方向边框强度抵抗电芯；1) Support beams that resist the expansion of the cell: the expansion surface of the cell is arranged along the X direction, and the strength of the frame in the Y direction resists the cell;
2)重量承载的支撑梁：水冷板总成6a与箱体边框5固定连接，水冷板总成6a被箱体边框5支撑梁分为多个区域，满足电池总成及零部件一阶模态≥30Hz-45Hz；2) Weight-bearing support beam: the water-cooled plate assembly 6a is fixedly connected to the box frame 5, and the water-cooled plate assembly 6a is divided into multiple areas by the box frame 5 support beam, which meets the first-order mode of the battery assembly and components ≥30Hz-45Hz;
3)箱体密封：L≥固定螺栓法兰面直径φ+2m-φ+6mm；3) Box seal: L≥fixed bolt flange diameter φ+2m-φ+6mm;
其中，L为箱体边框5与上箱体2之间的密封面宽度。Wherein, L is the width of the sealing surface between the box frame 5 and the upper box 2 .
本发明的有益效果为：The beneficial effects of the present invention are:
1)本发明通过能量管理单元和动力电池单元的集成，实现高压系统的高度集成，实现整车级别的降重降本；1) Through the integration of the energy management unit and the power battery unit, the present invention realizes the high integration of the high-voltage system and realizes the weight reduction and cost reduction at the vehicle level;
2)本发明的电芯集合可以针对不同电芯材料体系调整电芯间隙，实现不同体系共用电池箱体；可以通过更换或升级电芯集合，匹配搭载车辆需求。同时动力电池系统总正总负输出与半电压正负极输出同在一侧，半电压正负极间串联熔断器，该熔断器位置与总正总负输出极布置于能量管理装置内，当车辆故障造成，熔断器损坏时方便更换与维修；2) The cell assembly of the present invention can adjust the gap between cells for different cell material systems, so that different systems can share the battery box; the cell assembly can be replaced or upgraded to match the needs of the vehicle. At the same time, the total positive and negative outputs of the power battery system are on the same side as the half-voltage positive and negative outputs, and a fuse is connected in series between the half-voltage positive and negative electrodes. The position of the fuse and the total positive and total negative output electrodes are arranged in the energy management device. It is easy to replace and repair when the fuse is damaged due to vehicle failure;
3)本发明电芯集合偶数列布置，集合N/2和集合N/2+1间串联熔断 器，包括激励熔断器、智能熔断器等可以自主控制通断的熔断器，实现在整车发生碰撞、短路或热失控等非正常工作情境下及时断开，提高电池系统安全性。3) In the present invention, the cells are arranged in even columns, and the fuses connected in series between sets N/2 and N/2+1, including excitation fuses, intelligent fuses, etc. Timely disconnection under abnormal working conditions such as collision, short circuit or thermal runaway improves the safety of the battery system.
附图说明Description of drawings
为了更清楚地说明本发明实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，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他相关的附图。In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.
图1为本发明中储能装置的结构示意图；Fig. 1 is the structural representation of energy storage device among the present invention;
图2为本发明中复合水冷板的结构示意图；Fig. 2 is the structural representation of composite water-cooled plate among the present invention;
图3为本发明中动力电池系统的设计方法的流程图；Fig. 3 is a flow chart of the design method of the power battery system in the present invention;
图4为储能单元和能量管理单元的结构示意图；Fig. 4 is a schematic structural diagram of an energy storage unit and an energy management unit;
图5为质心位置要求示意图；Figure 5 is a schematic diagram of the requirements for the position of the center of mass;
图6为本发明中动力电池系统的结构示意图。Fig. 6 is a schematic structural diagram of the power battery system in the present invention.
图中：In the picture:
1、能量管理单元；2、上箱体；3、支撑板总成；4、电芯集合；5、箱体边框；6、复合水冷板；6a、水冷板总成；6b、底部板总成。1. Energy management unit; 2. Upper box; 3. Support plate assembly; 4. Cell assembly; 5. Box frame; 6. Composite water-cooled plate; 6a. Water-cooled plate assembly; 6b. Bottom plate assembly .
具体实施方式Detailed ways
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明一部分实施例，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他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. 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.
实施例一Embodiment one
参阅图6，一种动力电池系统，包括能量管理单元1和动力电池单元。Referring to FIG. 6 , a power battery system includes an energy management unit 1 and a power battery unit.
所述能量管理单元1包括电源装置、控制装置和配电装置。The energy management unit 1 includes a power supply device, a control device and a power distribution device.
所述动力电池单元包括储能装置、热管理装置和采样装置。The power battery unit includes an energy storage device, a heat management device and a sampling device.
通过能量管理单元和动力电池单元的集成，实现高压系统的高度集成，实现整车级别的降重降本。Through the integration of the energy management unit and the power battery unit, the high-level integration of the high-voltage system can be realized, and the weight and cost of the whole vehicle can be reduced.
所述配电装置串联在动力电池单元的高压接口与电装装置的直流母线接口之间；所述配电装置与控制装置通过低压线束连接；所述控制装置提供配电装置动作信号，配电装置动作实现开通和关断；所述储能装置固定在热管理装置上；所述采样装置与储能装置由低压线束连接，实现信号的传输。The power distribution device is connected in series between the high-voltage interface of the power battery unit and the DC bus interface of the electrical device; the power distribution device and the control device are connected through a low-voltage wire harness; the control device provides the action signal of the power distribution device, and the power distribution The action of the device realizes opening and closing; the energy storage device is fixed on the thermal management device; the sampling device and the energy storage device are connected by a low-voltage wiring harness to realize signal transmission.
所述电源装置包括DC/DC和OBC，用于交直流变换、升降压变换，满足动力电池单元充电过程电压变换需求。The power supply device includes DC/DC and OBC, which are used for AC-DC conversion, buck-boost conversion, and meet the voltage conversion requirements of the charging process of the power battery unit.
所述控制装置，用于接收动力电池单元发送的电压和温度信号，以及整车控制器下达的指令，使得充放电过程可控。The control device is used to receive the voltage and temperature signals sent by the power battery unit, as well as the instructions issued by the vehicle controller, so that the charging and discharging process is controllable.
所述配电装置包括主正继电器、主负继电器、快充继电器和熔断器，用于接收控制装置的指令，实现开通与关断。The power distribution device includes a main positive relay, a main negative relay, a fast charging relay and a fuse, which are used to receive instructions from the control device to realize switching on and off.
所述热管理装置包括上板、下板和进出水管；所述上板平整，下板冲有流道；所述上板和下板通过钎焊连接，再与进出水管接头焊接。The thermal management device includes an upper plate, a lower plate, and water inlet and outlet pipes; the upper plate is flat, and the lower plate is punched with flow channels; the upper plate and the lower plate are connected by brazing, and then welded to the joints of the water inlet and outlet pipes.
参阅图1，所述储能装置包括上箱体2、支撑板总成3、电芯集合4、箱体边框5、复合水冷板6、低压采样装置、高压连接装置、隔热装置和缓冲 装置；所述能量管理单元1的壳体的下端与上箱体2固定；所述上箱体2的下端与支撑板总成3配合；所述支撑板总成3固定在箱体边框5上，实现对能量管理单元1的支撑；所述电芯集合4的下端与复合水冷板6接触；所述复合水冷板6与箱体边框5通过焊接、螺接、粘接等方式集成作为4电芯集合的承载结构，所述低压采样装置、高压连接装置与电芯集合4激光焊接；所述隔热装置与缓冲装置通过结构胶或双面胶进行粘接；所述电芯集合4与箱体边框5通过非金属过渡件卡接实现绝缘和限位；所述采样装置与电芯集合4配合，用于采集电芯集合4的电压和温度信息，并且上报给控制装置。Referring to Figure 1, the energy storage device includes an upper box body 2, a support plate assembly 3, a cell assembly 4, a box frame 5, a composite water-cooled plate 6, a low-voltage sampling device, a high-voltage connection device, a heat insulation device and a buffer device The lower end of the shell of the energy management unit 1 is fixed to the upper box body 2; the lower end of the upper box body 2 cooperates with the support plate assembly 3; the support plate assembly 3 is fixed on the box frame 5, Realize the support for the energy management unit 1; the lower end of the cell set 4 is in contact with the composite water-cooled plate 6; the composite water-cooled plate 6 and the box frame 5 are integrated as 4 cells by welding, screwing, bonding, etc. The bearing structure of the assembly, the low-voltage sampling device, the high-voltage connection device and the cell assembly 4 are laser welded; the heat insulation device and the buffer device are bonded by structural adhesive or double-sided adhesive; the cell assembly 4 and the box The frame 5 is insulated and limited by clamping non-metallic transition pieces; the sampling device cooperates with the cell set 4 to collect the voltage and temperature information of the cell set 4 and report it to the control device.
参阅图2，所述复合水冷板6包括水冷板总成6a和底部板总成6b；所述水冷板总成6a和底部板总成6b固定连接；所述水冷板总成6a内嵌冷却水流道，冷却水流道与电芯集合4接触，实现冷却或加热。Referring to Figure 2, the composite water-cooled plate 6 includes a water-cooled plate assembly 6a and a bottom plate assembly 6b; the water-cooled plate assembly 6a and the bottom plate assembly 6b are fixedly connected; the water-cooled plate assembly 6a is embedded with a cooling water flow The cooling water flow channel is in contact with the cell set 4 to realize cooling or heating.
所述底部板总成6b采用高强钢或高强度复合材料对整个电源系统起到保护作用，防止底部磕碰造成冷却液泄露，甚至电芯损坏。The bottom plate assembly 6b is made of high-strength steel or high-strength composite material to protect the entire power supply system, preventing the leakage of coolant or even damage to the battery cells caused by bumping at the bottom.
实施例二Embodiment two
一种电动车辆，包括一种动力电池系统，即包括能量管理单元1和动力电池单元。所述能量管理单元1包括电源装置、控制装置和配电装置。所述动力电池单元包括储能装置、热管理装置和采样装置。所述配电装置串联在动力电池单元的高压接口与电装装置的直流母线接口之间；所述配电装置与控制装置通过低压线束连接；所述控制装置提供配电装置动作信号，配电装置动作实现开通和关断；所述储能装置固定在热管理装置上；所述采样装置与储能装置由低压线束连接，实现信号的传输。包括实施例 一所述动力电池系统的电动车辆通过能量管理单元和动力电池单元的集成，实现高压系统的高度集成，实现整车级别的降重降本。An electric vehicle includes a power battery system, which includes an energy management unit 1 and a power battery unit. The energy management unit 1 includes a power supply device, a control device and a power distribution device. The power battery unit includes an energy storage device, a heat management device and a sampling device. The power distribution device is connected in series between the high-voltage interface of the power battery unit and the DC bus interface of the electrical device; the power distribution device and the control device are connected through a low-voltage wire harness; the control device provides the action signal of the power distribution device, and the power distribution The action of the device realizes opening and closing; the energy storage device is fixed on the thermal management device; the sampling device and the energy storage device are connected by a low-voltage wiring harness to realize signal transmission. The electric vehicle including the power battery system described in Embodiment 1 realizes the high integration of the high-voltage system through the integration of the energy management unit and the power battery unit, and realizes weight reduction and cost reduction at the vehicle level.
实施例三Embodiment three
参阅图3，一种动力电池系统的设计方法，用于设计一种动力电池系统，包括以下步骤：Referring to Fig. 3, a design method of a power battery system is used to design a power battery system, including the following steps:
步骤一、布置动力电池单元中的电芯集合4；Step 1, arranging the cell set 4 in the power battery unit;
参阅图4，所述步骤一的具体方法如下：Referring to Fig. 4, the concrete method of described step one is as follows:
将熔断器置于直流母线输出极一侧，电芯集合1、2、3……N需满足：Place the fuse on the side of the output pole of the DC bus, and the cell sets 1, 2, 3...N need to meet:
U 1+……+U N/2＝U N/2+1+……+U N＝U O/2，其中N为偶数，且N≥4； U 1 +...+U N/2 ＝U N/2+1 +...+U N ＝U O /2, wherein N is an even number, and N≥4;
其中，N为电芯集合数；U N为电芯集合N输出端电压；U O为直流母线输出端电压。 Among them, N is the number of cell sets; U N is the output voltage of cell set N; U O is the output voltage of the DC bus.
所述电芯集合4包括方壳电芯、软包电芯、圆柱电芯等多种电芯形式The cell set 4 includes a variety of cell forms such as square shell cells, soft pack cells, cylindrical cells, etc.
电芯集合4偶数列布置，集合N/2和集合N/2+1间串联熔断器，包括激励熔断器、智能熔断器等可以自主控制通断的熔断器，实现在整车发生碰撞、短路或热失控等非正常工作情境下及时断开，提高电池系统安全性。The cells are arranged in 4 even-numbered columns, and fuses are connected in series between sets N/2 and sets N/2+1, including excitation fuses, intelligent fuses, and other fuses that can independently control on-off, so as to realize collision and short-circuit in the vehicle or thermal runaway and other abnormal working conditions to disconnect in time to improve the safety of the battery system.
本发明的电芯集合4可以针对不同电芯材料体系调整电芯间隙，实现不同体系共用电池箱体；可以通过更换或升级电芯集合，匹配搭载车辆需求。同时动力电池系统总正总负输出与半电压正负极输出同在一侧，半电压正负极间串联熔断器，该熔断器位置与总正总负输出极布置于能量管理装置内，当车辆故障造成，熔断器损坏时方便更换与维修。The battery cell assembly 4 of the present invention can adjust the battery cell gap for different battery material systems, so that different systems can share the battery box; the battery cell assembly can be replaced or upgraded to match the needs of the vehicle. At the same time, the total positive and negative outputs of the power battery system are on the same side as the half-voltage positive and negative outputs, and a fuse is connected in series between the half-voltage positive and negative electrodes. The position of the fuse and the total positive and total negative output electrodes are arranged in the energy management device. It is easy to replace and repair when the fuse is damaged due to vehicle failure.
步骤二、对动力电池单元进行载荷分配； Step 2, load distribution to the power battery unit;
参阅图5，具体方法如下：Refer to Figure 5, the specific method is as follows:
电池系统各区域载荷的质心应处于以质心边界几何中心为中心的区域内，且电池系统内部吊点即电池与车身固定点数量x满足：The center of mass of the load in each area of the battery system should be in the area centered on the geometric center of the boundary of the center of mass, and the number x of the internal lifting points of the battery system, that is, the fixed points between the battery and the body, satisfies:
x≥1，当G/A*B≤100kg/m 2 x≥1, when G/A*B≤100kg/ m2
x≥2，当100kg/m 2＜G/A*B≤250kg/m 2 x≥2, when 100kg/m 2 <G/A*B≤250kg/m 2
x≥3，当G/A*B＞250kg/m 2 x≥3, when G/A*B＞250kg/m 2
其中，G为电池系统箱体总载荷；A电池系统X方向尺寸；B为电池系统Y方向尺寸。Among them, G is the total load of the battery system box; A is the size of the battery system in the X direction; B is the size of the battery system in the Y direction.
步骤三、对动力电池单元中的箱体边框5的支撑梁进行设计； Step 3, designing the support beam of the box frame 5 in the power battery unit;
具体方法如下：The specific method is as follows:
所述箱体边框5的支撑梁根据作用不同，设计要求如下：The supporting beams of the box frame 5 are different according to their functions, and the design requirements are as follows:
1)抵抗电芯膨胀的支撑梁：电芯膨胀面沿X方向排布，Y方向边框强度抵抗电芯；1) Support beams that resist the expansion of the cell: the expansion surface of the cell is arranged along the X direction, and the strength of the frame in the Y direction resists the cell;
2)重量承载的支撑梁：水冷板总成6a与箱体边框5固定连接，水冷板总成6a被箱体边框5支撑梁分为多个区域，满足电池总成及零部件一阶模态≥30Hz-45Hz；2) Weight-bearing support beam: the water-cooled plate assembly 6a is fixedly connected to the box frame 5, and the water-cooled plate assembly 6a is divided into multiple areas by the box frame 5 support beam, which meets the first-order mode of the battery assembly and components ≥30Hz-45Hz;
3)箱体密封：L≥固定螺栓法兰面直径φ+2m-φ+6mm；3) Box seal: L≥fixed bolt flange diameter φ+2m-φ+6mm;
其中，L为箱体边框5与上箱体2之间的密封面宽度。Wherein, L is the width of the sealing surface between the box frame 5 and the upper box 2 .
电池系统内部与车身连接点数量与箱体单位面积载荷量支架的关系，实现系统的非冗余设计。The relationship between the number of connection points between the battery system and the body and the load bracket per unit area of the box realizes the non-redundant design of the system.
步骤四、对能量管理单元1进行设计，对动力电池单元中热管理装置和采样装置进行设计，从而完成对动力电池系统的设计。其中，Step 4: Design the energy management unit 1, design the thermal management device and the sampling device in the power battery unit, so as to complete the design of the power battery system. in,
所述电源装置包括DC/DC和OBC，用于交直流变换、升降压变换，满足动力电池单元充电过程电压变换需求。The power supply device includes DC/DC and OBC, which are used for AC-DC conversion, buck-boost conversion, and meet the voltage conversion requirements of the charging process of the power battery unit.
所述控制装置，用于接收动力电池单元发送的电压和温度信号，以及整车控制器下达的指令，使得充放电过程可控。The control device is used to receive the voltage and temperature signals sent by the power battery unit, as well as the instructions issued by the vehicle controller, so that the charging and discharging process is controllable.
所述配电装置包括主正继电器、主负继电器、快充继电器和熔断器，用于接收控制装置的指令，实现开通与关断。The power distribution device includes a main positive relay, a main negative relay, a fast charging relay and a fuse, which are used to receive instructions from the control device to realize switching on and off.
所述热管理装置包括上板、下板和进出水管；所述上板平整，下板冲有流道；所述上板和下板通过钎焊连接，再与进出水管接头焊接。The thermal management device includes an upper plate, a lower plate, and water inlet and outlet pipes; the upper plate is flat, and the lower plate is punched with flow channels; the upper plate and the lower plate are connected by brazing, and then welded to the joints of the water inlet and outlet pipes.
所述采样装置与电芯集合4配合，用于采集电芯集合4的电压和温度信息，并且上报给控制装置。The sampling device cooperates with the cell set 4 to collect voltage and temperature information of the cell set 4 and report to the control device.
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
在本实施例的描述中，术语“上”、“下”、“左”、“右”等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，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发明的限制。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。In the description of this embodiment, the terms "up", "down", "left", "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operations. It is not intended to indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first" and "second" are only used to distinguish in description, and have no special meaning.
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用 来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus.
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神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，本发明的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

  1. 一种动力电池系统，其特征在于，包括能量管理单元(1)和动力电池单元；所述能量管理单元(1)包括电源装置、控制装置和配电装置；所述动力电池单元包括储能装置、热管理装置和采样装置；所述配电装置串联在动力电池单元的高压接口与电装装置的直流母线接口之间；所述配电装置与控制装置通过低压线束连接；所述控制装置提供配电装置动作信号，配电装置动作实现开通和关断；所述储能装置固定在热管理装置上；所述采样装置与储能装置由低压线束连接，实现信号的传输；A power battery system, characterized in that it includes an energy management unit (1) and a power battery unit; the energy management unit (1) includes a power supply device, a control device and a power distribution device; the power battery unit includes an energy storage device , a thermal management device and a sampling device; the power distribution device is connected in series between the high-voltage interface of the power battery unit and the DC bus interface of the electrical device; the power distribution device and the control device are connected through a low-voltage wiring harness; the control device provides The action signal of the power distribution device, the action of the power distribution device is turned on and off; the energy storage device is fixed on the thermal management device; the sampling device and the energy storage device are connected by a low-voltage wiring harness to realize signal transmission;
  2. 根据权利要求1所述的一种动力电池系统，其特征在于，所述电源装置包括DC/DC和OBC，用于交直流变换、升降压变换，满足动力电池单元充电过程电压变换需求；所述控制装置，用于接收动力电池单元发送的电压和温度信号，以及整车控制器下达的指令，使得充放电过程可控；所述配电装置包括主正继电器、主负继电器、快充继电器和熔断器，用于接收控制装置的指令，实现开通与关断。A power battery system according to claim 1, wherein the power supply device includes DC/DC and OBC, which are used for AC-DC conversion, buck-boost conversion, and meet the voltage conversion requirements of the power battery unit charging process; The control device is used to receive the voltage and temperature signals sent by the power battery unit, as well as the instructions issued by the vehicle controller, so that the charging and discharging process can be controlled; the power distribution device includes a main positive relay, a main negative relay, and a fast charging relay And the fuse is used to receive the command of the control device to realize the opening and closing.
  3. 根据权利要求1所述的一种动力电池系统，其特征在于，所述热管理装置包括上板、下板和进出水管；所述上板平整，下板冲有流道；所述上板和下板固定连接后在与进出水管的接头固定；所述储能装置包括上箱体(2)、支撑板总成(3)、电芯集合(4)、箱体边框(5)、复合水冷板(6)、低压采样装置、高压连接装置、隔热装置和缓冲装置；所述能量管理单元(1)的壳体的下端与上箱体(2)固定；所述上箱体(2)的下端与支撑板总成(3)配合；所述支撑板总成(3)固定在箱体边框(5)上，实现对能量管理单元(1)的支撑；所述电芯集合(4)的下端与复合水冷板(6)接触；所述复合水冷板(6)与箱体边框(5)固定，实现对电芯的承载；所述低压采样装置、高压连接装置与电芯集合(4)激光焊 接；所述隔热装置与缓冲装置固定连接；所述电芯集合(4)与箱体边框(5)卡接；所述采样装置与电芯集合(4)配合，用于采集电芯集合(4)的电压和温度信息，并且上报给控制装置。The power battery system according to claim 1, wherein the thermal management device includes an upper plate, a lower plate, and water inlet and outlet pipes; the upper plate is flat, and the lower plate is punched with flow channels; the upper plate and the After the lower plate is fixedly connected, it is fixed at the joint with the water inlet and outlet pipes; the energy storage device includes an upper box (2), a support plate assembly (3), a cell assembly (4), a box frame (5), a composite water cooling plate (6), low-pressure sampling device, high-voltage connection device, heat insulation device and buffer device; the lower end of the shell of the energy management unit (1) is fixed to the upper box (2); the upper box (2) The lower end of the support plate assembly (3) cooperates; the support plate assembly (3) is fixed on the box body frame (5) to realize the support of the energy management unit (1); the battery core assembly (4) The lower end of the lower end is in contact with the composite water-cooled plate (6); the composite water-cooled plate (6) is fixed to the frame of the box body (5) to realize the load bearing of the electric core; the low-voltage sampling device, the high-voltage connection device and the electric core assembly (4 ) laser welding; the heat insulation device is fixedly connected with the buffer device; the cell assembly (4) is clamped with the box body frame (5); the sampling device cooperates with the cell assembly (4) to collect electric The voltage and temperature information of the core set (4) is reported to the control device.
  4. 根据权利要求3所述的一种动力电池系统，其特征在于，所述能量管理单元(1)的壳体的下端通过密封垫或密封胶与上箱体(2)密封；所述上板和下板通过钎焊连接后在与进出水管的接头焊接；所述隔热装置与缓冲装置通过结构胶或双面胶进行粘接；所述电芯集合(4)与箱体边框(5)通过非金属过渡件卡接实现绝缘和限位。A power battery system according to claim 3, characterized in that, the lower end of the housing of the energy management unit (1) is sealed with the upper box (2) through a gasket or sealant; the upper plate and After the lower plate is connected by brazing, it is welded to the joint of the water inlet and outlet pipes; the heat insulation device and the buffer device are bonded with structural adhesive or double-sided adhesive; The non-metallic transition piece is clamped to realize insulation and limit.
  5. 根据权利要求3所述的一种动力电池系统，其特征在于，所述复合水冷板(6)包括水冷板总成(6a)和底部板总成(6b)；所述水冷板总成(6a)和底部板总成(6b)固定连接；所述水冷板总成(6a)内嵌冷却水流道，冷却水流道与电芯集合(4)接触，实现冷却或加热。A power battery system according to claim 3, characterized in that, the composite water-cooled plate (6) includes a water-cooled plate assembly (6a) and a bottom plate assembly (6b); the water-cooled plate assembly (6a ) and the bottom plate assembly (6b) are fixedly connected; the water-cooled plate assembly (6a) is embedded with a cooling water flow channel, and the cooling water flow channel is in contact with the cell set (4) to realize cooling or heating.
  6. 一种电动车辆，其特征在于，包括权利要求1-5任一项所述的一种动力电池系统。An electric vehicle, characterized by comprising the power battery system described in any one of claims 1-5.
  7. 一种动力电池系统的设计方法，用于设计一种动力电池系统，其特征在于，包括以下步骤：A design method for a power battery system, used for designing a power battery system, is characterized in that it includes the following steps:
    步骤一、布置动力电池单元中的电芯集合(4)；Step 1, arranging the cell assembly in the power battery unit (4);
    步骤二、对动力电池单元进行载荷分配；Step 2, load distribution to the power battery unit;
    步骤三、对动力电池单元中的箱体边框(5)的支撑梁进行设计；Step 3, designing the support beam of the box frame (5) in the power battery unit;
    步骤四、对能量管理单元(1)进行设计，对动力电池单元中热管理装置和采样装置进行设计，从而完成对动力电池系统的设计。Step 4: Design the energy management unit (1), design the thermal management device and the sampling device in the power battery unit, so as to complete the design of the power battery system.
  8. 根据权利要求7所述的一种动力电池系统的设计方法，其特征在于，所述步骤一的具体方法如下：The design method of a power battery system according to claim 7, wherein the specific method of the step 1 is as follows:
    将熔断器置于直流母线输出极一侧，电芯集合1、2、3……N需满足：Place the fuse on the side of the output pole of the DC bus, and the cell sets 1, 2, 3...N need to meet:
    U 1+……+U N/2＝U N/2+1+……+U N＝U O/2，其中N为偶数，且N≥4； U 1 +...+U N/2 ＝U N/2+1 +...+U N ＝U O /2, wherein N is an even number, and N≥4;
    其中，N为电芯集合数；U N为电芯集合N输出端电压；U O为直流母线输出端电压。 Among them, N is the number of cell sets; U N is the output voltage of cell set N; U O is the output voltage of the DC bus.
  9. 根据权利要求7所述的一种动力电池系统的设计方法，其特征在于，所述步骤二的具体方法如下：The design method of a power battery system according to claim 7, wherein the specific method of the second step is as follows:
    电池系统各区域载荷的质心应处于以质心边界几何中心为中心的区域内，且电池系统内部吊点即电池与车身固定点数量x满足：The center of mass of the load in each area of the battery system should be in the area centered on the geometric center of the boundary of the center of mass, and the number x of the internal lifting points of the battery system, that is, the fixed points between the battery and the body, satisfies:
    x≥1，当G/(A*B)≤100kg/m 2 x≥1, when G/(A*B)≤100kg/ m2
    x≥2，当100kg/m 2＜G/(A*B)≤250kg/m 2 x≥2, when 100kg/m 2 <G/(A*B)≤250kg/m 2
    x≥3，当G/(A*B)＞250kg/m 2 x≥3, when G/(A*B)＞250kg/m 2
    其中，G为电池系统箱体总载荷；A电池系统X方向尺寸；B为电池系统Y方向尺寸。Among them, G is the total load of the battery system box; A is the size of the battery system in the X direction; B is the size of the battery system in the Y direction.
  10. 根据权利要求7所述的一种动力电池系统的设计方法，其特征在于，所述步骤三的具体方法如下：The design method of a power battery system according to claim 7, wherein the specific method of the third step is as follows:
    所述箱体边框(5)的支撑梁根据作用不同，设计要求如下：The supporting beams of the box frame (5) are different according to their functions, and the design requirements are as follows:
    (1)抵抗电芯膨胀的支撑梁：电芯膨胀面沿X方向排布，Y方向边框强度抵抗电芯；(1) Support beams that resist cell expansion: the cell expansion surface is arranged along the X direction, and the frame strength in the Y direction resists the cell;
    (2)重量承载的支撑梁：水冷板总成(6a)与箱体边框(5)固定连接，水冷板总成(6a)被箱体边框(5)支撑梁分为多个区域，满足电池总成及零部件一阶模态≥(30Hz-45Hz)；(2) Weight-bearing support beam: the water-cooled plate assembly (6a) is fixedly connected to the box frame (5), and the water-cooled plate assembly (6a) is divided into multiple areas by the box frame (5) support beam to meet the requirements of the battery The first-order mode of the assembly and parts ≥ (30Hz-45Hz);
    (3)箱体密封：L≥固定螺栓法兰面直径φ+2m-φ+6mm；(3) Box seal: L≥fixed bolt flange diameter φ+2m-φ+6mm;
    其中，L为箱体边框(5)与上箱体(2)之间的密封面宽度。Wherein, L is the width of the sealing surface between the box frame (5) and the upper box (2).
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