WO2023087725A1 - 一种电池系统 - Google Patents

一种电池系统 Download PDF

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Publication number
WO2023087725A1
WO2023087725A1 PCT/CN2022/102377 CN2022102377W WO2023087725A1 WO 2023087725 A1 WO2023087725 A1 WO 2023087725A1 CN 2022102377 W CN2022102377 W CN 2022102377W WO 2023087725 A1 WO2023087725 A1 WO 2023087725A1
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WO
WIPO (PCT)
Prior art keywords
battery system
battery
frame
mounting bracket
module
Prior art date
Application number
PCT/CN2022/102377
Other languages
English (en)
French (fr)
Inventor
李云庆
唐泳聪
周元
王晓宾
徐博豪
Original Assignee
湖北亿纬动力有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 湖北亿纬动力有限公司 filed Critical 湖北亿纬动力有限公司
Publication of WO2023087725A1 publication Critical patent/WO2023087725A1/zh

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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
    • H01M10/60—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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the technical field of automobile battery systems, for example, to a battery system.
  • the application provides a battery system, in which multiple mounting brackets are arranged at different heights on the length frame, and the heights of multiple mounting brackets of different heights can be adjusted according to the installation position of the chassis sill beam, so that the fixed box can be Adapt to different models and improve the applicability of the battery system in different models.
  • a battery system is provided, the battery system includes a battery module and a fixed box, the battery module is installed in the fixed box, and the fixed box includes:
  • each of the length frames is equipped with a plurality of mounting brackets along its length direction, and the mounting brackets are set to be connected with the chassis sill beam and installed on the same length frame
  • the heights of the plurality of mounting brackets arranged along the Y axis in the direction of the Z axis decrease successively;
  • the supporting bottom plate is connected between two adjacent length frames, and is configured to carry the battery module.
  • FIG. 1 is an exploded view of the structure of the battery system described in the embodiment
  • Fig. 2 is the structural exploded view of the fixed casing described in the embodiment
  • Fig. 4 is a partial sectional view of the battery system according to the embodiment.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • connection can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • 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.
  • the battery system is installed on the chassis sill beam of the electric vehicle. Since different types of vehicles use different chassis sill beams, it is necessary to develop multiple battery systems, which makes the development cycle of new models too long and the development cost remains high.
  • this embodiment provides a battery system that can be applied to different types of automobiles, shorten the development cycle of new models, and reduce development costs.
  • the battery system includes a fixed box 10 and a battery module 20 installed in the fixed box 10 .
  • the battery modules 20 are arranged in multiple groups.
  • the fixed box body 10 includes a support base plate 13 and at least two length frames 11 arranged at intervals, each length frame 11 is equipped with a plurality of mounting brackets 12 along its length direction, and
  • the bracket 12 is set to be connected with the chassis sill beam, and the heights of the multiple mounting brackets 12 arranged along the Y axis arranged on the same length frame 11 in the Z axis direction decrease successively;
  • the support base plate 13 is connected to two adjacent length frames 11, set to carry the battery module 20.
  • the present application provides a battery system.
  • the fixed box is installed on the chassis door sill beam of the automobile, and the mounting bracket on the length frame is along the Z
  • the heights in the axial direction are not equal, so the mounting bracket can be adjusted in height according to the installation position of the chassis sill beam, so that the battery system can be adapted to different models, reducing the development cost of the battery system and shortening the development cycle.
  • the length frame 11 is set in two pieces, and the two length frames 11 are arranged in parallel and at intervals.
  • the fixed box 10 is installed on the chassis sill beam of the car.
  • the height of the mounting bracket 12 on the length frame 11 along the Z-axis direction is not the same, so the height of the mounting bracket 12 can be adjusted according to the installation position of the chassis sill beam, so that the battery system can be adapted to different models. Reduce the development cost of the battery system and shorten the development cycle.
  • the length frame 11 can be set to three or four pieces, and the number of length frames 11 can be set according to actual needs.
  • two adjacent length frames 11 may be arranged at an included angle.
  • the two adjacent length frames 11 are respectively the left frame and the right frame
  • the mounting bracket 12 installed on the left frame is the left mounting bracket
  • the mounting bracket 12 installed on the right frame is the right mounting bracket
  • the brackets, the left mounting bracket and the right mounting bracket are provided in one-to-one correspondence, and the height of the one-to-one corresponding left mounting bracket in the Z-axis direction is not equal to the height of the right mounting bracket.
  • the number of the left mounting bracket and the right mounting bracket can be set according to actual needs, such as two, or three, or five.
  • each mounting bracket 12 is provided with a mounting hole, and a bushing 14 is installed in the mounting hole, and the bushing 14 is detachably connected to the chassis sill beam.
  • the chassis sill beam is provided with a connecting sleeve, and the bushing 14 is connected with the connecting sleeve with an interference fit, or both the bushing 14 and the chassis sill beam are provided with pin holes, and a bolt is used to pass through the pin hole. To connect the bushing 14 and the chassis sill beam.
  • the fixed box body 10 further includes a fixed box cover 15 , and the fixed box cover 15 covers and is mounted on the top of the length frame 11 .
  • the fixed box 10 further includes a width frame 16 disposed between two adjacent length frames 11 .
  • the battery systems in the related art include a plurality of battery modules 20, and the battery modules 20 include one of a harmonica tube radiator and a liquid-cooled plate radiator.
  • the radiator 23 When the temperature of the battery cell 22 is too high, the radiator 23 It can carry out heat dissipation and cooling. When the ambient temperature is too low, the radiator 23 can provide heat and heat preservation; after the type of the radiator 23 is determined, then select the module box 21 that is suitable for the structure of the radiator 23.
  • the module box 21 of the related art The group box body 21 can only be adapted to one kind of radiator 23 and cannot be used universally.
  • the battery module 20 of this embodiment includes a module box 21 installed on the support base 13, at least one battery cell 22 arranged in the module box 21 As well as the heat sink 23 disposed at the bottom of the battery cell 22 , the bottom of the module case 21 is provided with a relief gap 211 configured to make way for the heat sink 23 .
  • the radiator 23 may be a harmonica tube radiator or a liquid-cooled plate radiator.
  • the harmonica tube When choosing a harmonica tube radiator, the harmonica tube can pass through the gap 211, and the two ends of the harmonica tube extend into the interior of two adjacent battery modules 20, and the gap 211 of the module box 21 can The harmonica tube radiator is avoided; when a liquid-cooled plate radiator is selected, the liquid-cooled plate radiator can also be placed at the bottom of two adjacent battery modules 20 .
  • the harmonica tube radiator is made of AL3003 material.
  • the battery module 20 further includes a foam 24 disposed at the bottom of the heat sink 23 , and the height of the relief gap 211 is equal to the sum of the heights of the heat sink 23 and the foam 24 .
  • the module box 21 can press the radiator 23 and the foam 24 tightly on the support base plate 13, the foam 24 can provide sufficient support for the radiator 23, and realize thermal insulation, avoiding the radiator 23 under the condition of low temperature heating. Heat is lost quickly.
  • an airgel pad 25 is arranged between two adjacent battery cells 22 .
  • the airgel pad 25 can slow down the transmission rate of the heat generated by a single cell 22 to the adjacent cell 22 when thermal runaway occurs, reduce the direction of thermal diffusion of the entire battery module 20, and improve the safety of the battery system.
  • the module box 21 includes an end plate 212, a side plate 213, and an upper box cover 214.
  • the end plate 212 and the side plate 213 form a four-frame frame, and the upper box cover 214 covers and is installed on the top of the four frame.
  • the relief gap 211 is opened at the bottom of the end plate 212, and the two sides of the end plate 212 are provided with installation through holes along the Z-axis direction
  • the supporting base plate 13 is provided with a connection through hole corresponding to the installation through hole, and the installation through hole and the connection through hole They are connected by blind rivet nuts 26.
  • the module box body 21 and the support base plate 13 can be quickly connected by blind rivet nuts 26 to improve installation efficiency.
  • the blind rivet nut 26 is made of steel.
  • the battery module 20 further includes an insulating sheet 27 disposed between the battery cell 22 and the end plate 212 .
  • the insulating sheet 27 can prevent insulation damage caused by abrasion between the battery core 22 and the end.
  • structural glue is provided between the side plate 213 and the battery core 22 .
  • the battery cell 22 is adhered to the inner wall of the side plate 213 by structural glue, and the side plate 213 bears the gravity of the battery cell 22 to prevent the battery cell 22 from crushing the radiator 23 at its bottom.
  • the battery cell 22 is a ternary battery cell.
  • the battery system further includes a mica piece, and at least one of the inner wall of the fixed case cover 15 and the inner wall of the upper case cover 214 is provided with a mica piece.
  • the inner wall of the fixed case cover 15 and the inner wall of the upper case cover 214 are both provided with mica pieces.
  • the mica part on the inwall of fixing box cover 15 is mica plate 17, and the mica part on the inwall of upper case cover 214 is mica paper 28, and mica plate 17 and mica paper 28 are all made of phlogopite material.
  • the mica paper 28 can slow down the impact damage of the high-temperature and high-pressure gas generated by the battery cell 22 to the upper case cover 214, absorb the high-temperature gas, and slow down the thermal diffusion time of the battery module 20.
  • the mica plate 17 can slow down the impact damage of the high temperature and high pressure gas on the fixed case cover 15 .
  • the battery system further includes an explosion-proof valve, at least one of the upper case cover 214 and the fixed case cover 15 is provided with an explosion-proof valve, and the explosion-proof valve is configured to discharge uncontrolled gas.
  • the upper case cover 214 and the upper case cover 214 are provided with explosion-proof valves, which can discharge the high-temperature and high-pressure gas generated when the battery cell 22 is thermally out of control in time.
  • the battery system further includes an acquisition control unit, the acquisition control unit includes a low-voltage wiring harness and a battery management system (Battery Management System, BMS), and the low-voltage wiring harness is electrically connected to the BMS.
  • BMS Battery Management System
  • the low-voltage wiring harness is set to collect data such as battery voltage and temperature, and control the input and output of the BMS according to the collected data and software logic control.
  • BMS is a battery management system.
  • the battery system further includes a high-voltage power unit, the high-voltage power unit includes a high-voltage connection aluminum bar and a battery disconnect unit (Battery Disconnect Unit, BDU), and the high-voltage power unit is configured to carry the input and output of the current of the battery module 20.
  • the high-voltage power unit includes a high-voltage connection aluminum bar and a battery disconnect unit (Battery Disconnect Unit, BDU)
  • BDU Battery Disconnect Unit
  • the high-voltage power unit is configured to carry the input and output of the current of the battery module 20.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请公开一种电池系统，电池系统包括电池模组和固定箱体，电池模组安装于固定箱体内，固定箱体包括支撑底板和至少两块间隔设置的长度边框，每块所述长度边框上沿其长度方向安装有多个挂载支架，所述挂载支架设置为与底盘门槛梁连接，安装于同一所述长度边框上的多个沿Y轴排列的所述挂载支架在Z轴方向的高度依次递减；支撑底板连接于相邻的两块所述长度边框之间，设置为承载电池模组。

Description

一种电池系统
本公开要求在2021年11月18日提交中国专利局、申请号为202122827391.2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
本申请涉及汽车电池系统技术领域，例如涉及一种电池系统。
背景技术
随着电动汽车被人们普遍接受，其发展前景十分宽阔，技术进步也十分明显。汽车企业为占据更多的市场份额，在保证质量的前提下往往会开发出多款车型，各款车型往往有部分零部件可以通用，而另外一部分零部件需要更换或者改动。电池系统作为电动汽车的核心部件，其开发成本高，开发周期长，如果在不同的车型上可以共用一款电池系统，则可大大缩短整个新车型的开发周期，减少开发成本。
发明内容
本申请提供一种电池系统，将多个挂载支架在长度边框上不等高设置，不等高的多个挂载支架能够根据底盘门槛梁的安装位置进行高度调整，从而使得固定箱体能够适配不同的车型，提高电池系统在不同车型的适用性。
本申请采用以下技术方案：
提供一种电池系统，所述电池系统包括电池模组和固定箱体，所述电池模组安装于所述固定箱体内，所述固定箱体包括：
至少两块间隔设置的长度边框，每块所述长度边框上沿其长度方向安装有多个挂载支架，所述挂载支架设置为与底盘门槛梁连接，安装于同一所述长度边框上的多个沿Y轴排列的所述挂载支架在Z轴方向的高度依次递减；
支撑底板，连接于相邻的两块所述长度边框之间，设置为承载电池模组。
附图说明
下面根据附图和实施例对本申请作详细说明；
图1为实施例所述的电池系统的结构爆炸图；
图2为实施例所述的固定箱体的结构爆炸图；
图3为实施例所述的电池模组的结构爆炸图；
图4为实施例所述的电池系统的部分剖视图。
图中：
10、固定箱体；11、长度边框；12、挂载支架；13、支撑底板；14、衬套；15、固定箱盖；16、宽度边框；17、云母板；20、电池模组；21、模组箱体；211、让位缺口；212、端板；213、侧边板；214、上箱体盖；22、电芯；23、散热器；24、泡棉；25、气凝胶垫；26、拉铆螺母；27、绝缘片；28、云母纸。
具体实施方式
下面将结合附图对本申请实施例的技术方案作详细描述，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据情况理解上述术语在本申请中的含义。
在本申请中，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。
于本文的描述中，需要理解的是，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。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。
在本说明书的描述中，参考术语“一实施例”、“示例”等的描述意指结合该实施例或示例描述的特征、结构、材料或者特点包含于本申请的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。
下面结合附图并通过实施方式来说明本申请的技术方案。
电池系统安装于电动汽车的底盘门槛梁上，由于不同类型的汽车采用不同的底盘门槛梁，因此需要开发多款电池系统，使得新车型的开发周期过长，开发成本居高不下。
如图1所示，本实施例为解决上述问题，本实施例提供一种电池系统，能够适用于不同类型汽车，缩短新车型的开发周期，降低开发成本。该电池系统包括固定箱体10以及安装于固定箱体10内的电池模组20。电池模组20设置为多组。
如图2所示，可选的，固定箱体10包括支撑底板13以及至少两块间隔设置的长度边框11，每块长度边框11上沿其长度方向安装有多个挂载支架12，挂载支架12设置为与底盘门槛梁连接，安装于同一长度边框11上的多个沿Y轴排列的挂载支架12在Z轴方向的高度依次递减；支撑底板13连接于相邻的两块长度边框11之间，设置为承载电池模组20。
在一实施例中，本申请提供一种电池系统，当需要将电池系统装配到不同 类型的汽车上时，将固定箱体安装在汽车的底盘门槛梁上，长度边框上的挂载支架沿Z轴方向的高度不等同，因此挂载支架能够根据底盘门槛梁的安装位置进行高度上的调整，从而使得电池系统能够适配不同的车型，降低电池系统的开发成本，缩短开发周期。
在本实施例中，长度边框11设置为两块，两块长度边框11平行且间隔设置，当需要将电池系统装配到不同类型的汽车上时，将固定箱体10安装在汽车的底盘门槛梁上，长度边框11上的挂载支架12沿Z轴方向的高度不等同，因此挂载支架12能够根据底盘门槛梁的安装位置进行高度上的调整，从而使得电池系统能够适配不同的车型，降低电池系统的开发成本，缩短开发周期。在其他的一些实施例中，长度边框11可设置为三块，或者四块，长度边框11的数量可根据实际需要进行设置。在其他的一些实施例中，相邻两块长度边框11可呈夹角设置。
可选的，相邻的两块长度边框11分别为左边框和右边框，安装于左边框上的挂载支架12为左挂载支架，安装于右边框上的挂载支架12为右挂载支架，左挂载支架与右挂载支架一一对应设置，且一一对应的左挂载支架在Z轴方向上的高度不等于右挂载支架的高度。
在本实施例中，左边框上的左挂载支架设置为四个，右边框上的右挂载支架设置为四个，四个左挂载支架与四个右挂载支架一一对应设置，且一一对应的左挂载支架在Z轴方向上的高度高于右挂载支架的高度，提高挂载支架12在底盘门槛梁上沿Z轴方向的调整能力。在其他的一些实施例中，左挂载支架和右挂载支架的数量可根据实际需要进行设置，例如两个，或者三个，或者五个。
可选的，每个挂载支架12上均开设有安装孔，安装孔内安装有衬套14，衬套14与底盘门槛梁之间可拆卸连接。在本实施例中，将挂载支架12对应调整到底盘门槛梁的位置之后，采用螺栓穿过衬套14，并使螺栓与底盘门槛梁上的焊接螺母紧固。在其他的一些实施例中，底盘门槛梁上设置有连接套筒，衬套14与连接套筒过盈配合连接，或者衬套14和底盘门槛梁上均开设有销孔，采用插 销穿过销孔，以连接衬套14和底盘门槛梁。
在本实施例中，固定箱体10还包括固定箱盖15，固定箱盖15覆盖安装于长度边框11的顶部。
在本实施例中，固定箱体10还包括宽度边框16，宽度边框16设置于相邻的两块长度边框11之间。
相关技术的电池系统大多包括有多个电池模组20，电池模组20包括口琴管散热器和液冷板散热器二者中的一种，当电芯22的温度过高时，散热器23能够进行散热降温，当环境温度过低时，散热器23能够进行供热保温；当散热器23的类型确定之后，再选择与散热器23结构适配的模组箱体21，相关技术的模组箱体21只能够适配一种散热器23而不能够进行通用。
如图1至图4所示，为解决上述问题，本实施例的电池模组20包括安装于支撑底板13上的模组箱体21、设置于模组箱体21内的至少一个电芯22以及设置于电芯22底部的散热器23，模组箱体21的底部开设有设置为让位散热器23的让位缺口211。在本实施例中，散热器23可选为口琴管散热器或液冷板散热器。当选择口琴管散热器时，可将口琴管穿过让位缺口211，口琴管的两端分别伸入两组相邻的电池模组20的内部，模组箱体21的让位缺口211能够对口琴管散热器进行避让；当选择液冷板散热器时，同样可以将液冷板散热器安置于两组相邻的电池模组20的底部。
可选的，口琴管散热器采用AL3003材料制成。
可选的，电池模组20还包括泡棉24，泡棉24设置于散热器23的底部，让位缺口211的高度等于散热器23与泡棉24的高度之和。模组箱体21能够将散热器23和泡棉24压紧于支撑底板13上，泡棉24能够为散热器23提供足够的支撑力，并实现热阻隔，避免低温加热情况下散热器23的热量快速散失。
可选的，相邻两块电芯22之间设置有气凝胶垫25。气凝胶垫25能够减缓单个电芯22发生热失控时产生的热量向相邻的电芯22传动的速率，降低整个电池 模组20发生热扩散的方向，提高电池系统的安全性。
可选的，模组箱体21包括端板212、侧边板213以及上箱体盖214，端板212与侧边板213围成四边框，上箱体盖214覆盖安装于四边框的顶部，让位缺口211开设于端板212的底部，且端板212的两侧沿Z轴方向开设有安装通孔，支撑底板13对应安装通孔开设有连接通孔，安装通孔与连接通孔之间通过拉铆螺母26连接。模组箱体21与支撑底板13之间能够通过拉铆螺母26快速连接，提高安装效率。
可选的，拉铆螺母26采用钢材制成。
可选的，电池模组20还包括绝缘片27，绝缘片27设置于电芯22与端板212之间。绝缘片27能够避免电芯22与端部之间磨损导致绝缘破坏。
可选的，侧边板213与电芯22之间设置有结构胶。电芯22通过结构胶粘附在侧边板213的内壁上，侧边板213承受电芯22的重力，避免电芯22压坏位于其底部的散热器23。
在本实施例中，电芯22为三元电芯。
可选的，电池系统还包括云母件，固定箱盖15的内壁和上箱体盖214的内壁中至少之一设置有云母件。
在本实施例中，固定箱盖15的内壁和上箱体盖214的内壁均设置有云母件。固定箱盖15的内壁上的云母件为云母板17，上箱体盖214的内壁上的云母件为云母纸28，云母板17和云母纸28均由金云母材料制成。在电芯22发生热失控的状态下，云母纸28能够减缓电芯22产生的高温高压气体对上箱体盖214的冲击破坏，并吸收高温气体，减缓电池模组20发生热扩散的时间，提高电池系统的热安全性；在电池模组20发生热失控的状态下，云母板17能够减缓高温高压气体对固定箱盖15的冲击破坏。
可选的，电池系统还包括防爆阀，上箱体盖214和固定箱盖15中至少之一上设置有防爆阀，防爆阀设置为排出失控气体。
在本实施例中，上箱体盖214和上箱体盖214上设置有防爆阀，防爆阀能够将电芯22热失控时产生的高温高压气体及时排出。
可选的，电池系统还包括采集控制单元，采集控制单元包括低压线束和电池管理系统(Battery Management System，BMS)，低压线束与BMS电连接。低压线束设置为采集电池电压、温度等数据，并根据采集数据和软件的逻辑控制对BMS的输入和输出进行控制。BMS为电池管理系统。
可选的，电池系统还包括高压动力单元，高压动力单元包括高压连接铝排和电池切断单元(Battery Disconnect Unit，BDU)，高压动力单元设置为承载电池模组20的电流的输入和输出。

Claims (12)

  1. 一种电池系统，所述电池系统包括电池模组(20)和固定箱体(10)，所述电池模组(20)安装于所述固定箱体(10)内，所述固定箱体(10)包括：
    至少两块间隔设置的长度边框(11)，每块所述长度边框(11)上沿其长度方向安装有多个挂载支架(12)，所述挂载支架(12)设置为与底盘门槛梁连接，安装于同一所述长度边框(11)上的多个沿Y轴排列的所述挂载支架(12)在Z轴方向的高度依次递减；
    支撑底板(13)，连接于相邻的两块所述长度边框(11)之间，设置为承载电池模组(20)。
  2. 根据权利要求1所述的电池系统，其中，相邻的两块所述长度边框(11)分别为左边框和右边框，安装于所述左边框上的所述挂载支架(12)为左挂载支架，安装于所述右边框上的所述挂载支架(12)为右挂载支架，所述左挂载支架与所述右挂载支架一一对应设置，且一一对应的所述左挂载支架在Z轴方向上的高度不等于所述右挂载支架的高度。
  3. 根据权利要求1所述的电池系统，其中，每个所述挂载支架(12)上均开设有安装孔，所述安装孔内安装有衬套(14)，所述衬套(14)与所述底盘门槛梁之间可拆卸连接。
  4. 根据权利要求1所述的电池系统，其中，所述电池模组(20)包括安装于所述支撑底板(13)上的模组箱体(21)、设置于所述模组箱体(21)内的至少一个电芯(22)以及设置于所述电芯(22)底部的散热器(23)，所述模组箱体(21)的底部开设有设置为让位所述散热器(23)的让位缺口(211)。
  5. 根据权利要求4所述的电池系统，其中，所述散热器(23)为口琴管散热器或液冷板散热器。
  6. 根据权利要求4所述的电池系统，其中，所述电池模组(20)还包括泡 棉(24)，所述泡棉(24)设置于所述散热器(23)的底部，所述让位缺口(211)的高度等于所述散热器(23)与所述泡棉(24)的高度之和。
  7. 根据权利要求4所述的电池系统，其中，所述电芯(22)设有多个，相邻两块所述电芯(22)之间设置有气凝胶垫(25)。
  8. 根据权利要求5-7任一项所述的电池系统，其中，所述模组箱体(21)包括端板(212)、侧边板(213)以及上箱体盖(214)，所述端板(212)与所述侧边板(213)围成四边框，所述上箱体盖(214)覆盖安装于所述四边框的顶部，所述让位缺口(211)开设于所述端板(212)的底部，且所述端板(212)的两侧沿Z轴方向开设有安装通孔，所述支撑底板(13)对应所述安装通孔开设有连接通孔，所述安装通孔与所述连接通孔之间通过拉铆螺母(26)连接。
  9. 根据权利要求8所述的电池系统，其中，所述电池模组(20)还包括绝缘片(27)，所述绝缘片(27)设置于所述电芯(22)与所述端板(212)之间。
  10. 根据权利要求8所述的电池系统，其中，所述侧边板(213)与所述电芯(22)之间设置有结构胶。
  11. 根据权利要求8所述的电池系统，其中，所述固定箱体(10)还包括固定箱盖(15)，所述固定箱盖(15)覆盖安装于所述长度边框(11)的顶部，所述电池系统还包括云母件，所述固定箱盖(15)的内壁和所述上箱体盖(214)的内壁中至少之一设置有所述云母件。
  12. 根据权利要求11所述的电池系统，其中，所述电池系统还包括防爆阀，所述上箱体盖(214)和所述固定箱盖(15)中至少之一上设置有所述防爆阀，所述防爆阀设置为排出失控气体。
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