CN105489802A - Battery module and battery box - Google Patents
Battery module and battery box Download PDFInfo
- Publication number
- CN105489802A CN105489802A CN201510843129.3A CN201510843129A CN105489802A CN 105489802 A CN105489802 A CN 105489802A CN 201510843129 A CN201510843129 A CN 201510843129A CN 105489802 A CN105489802 A CN 105489802A
- Authority
- CN
- China
- Prior art keywords
- battery
- battery case
- management system
- battery management
- filtering unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/002—Casings with localised screening
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to a battery module and a battery box. The battery module comprises a metal battery box, a battery pack and a battery management system, wherein the battery pack is arranged inside the battery box; an installation structure of the battery management system is arranged outside the battery box, and the installation structure is a shielding case composed of an installation groove concavely formed in one side wall of the battery box and a metal cover plate for blocking an opening of the installation groove; and the battery management system is installed in the shielding case. The isolation between the battery pack and the battery management system can be realized through the battery box, and the shielding of the battery pack for the radiation electromagnetic interference of the battery management system is realized. Moreover, the battery management system is arranged in the shielding case, so that the isolation between the battery pack and the battery management system can be realized further, and the electromagnetic interference of the battery management system to external equipment can be shielded; and moreover, compactness of the battery module is realized through the installation groove concavely formed in the side wall, so that the volume of the battery module is reduced, and the battery module is conveniently placed.
Description
Technical field
The present invention relates to a kind of battery module and a kind of battery case, belong to the anti-electromagnetic interference technical field of battery.
Background technology
Electric automobile receives much concern as the outstanding representative of clean energy resource, and since 2014, government policy is accelerated to put into effect, and promotes electric automobile and enters fast traffic lane, estimate following 2 years, and electric automobile industry is by fast-developing with the speed of 5 times.But while electric automobile industry is flourish, relevant technical research is not caught up with.Man of conventional fuel oil depot enters electric automobile field one after another, the electrification of fuel combustion vehicle is a system engineering, electric equipment integrated on electric automobile, considerably beyond conventional fuel oil car, mainly comprises battery, motor, automatically controlled etc., followingly also will increase a large amount of mobile Internets and multimedia equipment.So many power consumption equipments, comprise high-tension apparatus, low-voltage equipment and radio transmission apparatus and are integrated in a narrow space, must be faced with the problem of interference mutually.Current electrical device of electric vehicle EMC Requirements performs according to QC/T413 " automotive electric equipment fundamental technical specifications ", wherein defines electromagnetic radiation vulnerability to jamming, the vulnerability to jamming of electric transient conduction and electromagnetic disturbance.The electromagnetic disturbance spectral range wherein specified is 150kHz to 2500MHz, and current battery module design method can not meet the shielding requirements of spectral range like this.The vulnerability to jamming of the electric transient conduction simultaneously specified in this standard is only suitable for low pressure 12V or 24V power supply, and the power brick high pressure of electric automobile can reach more than 600V, so existing design standard inapplicable.Because conventional battery module is for the disappearance of electromangnetic spectrum standard and the immature of method for designing, electric vehicle battery system can be caused to occur various problem, and instability and communication failure as caused voltage acquisition value because being subject to electromagnetic interference such as to occur frequently at the problem.
Conventional battery module for electric automobile is the battery pack be made up of several cells, it is supporting is provided with a battery management system (BMS), the electric current of battery management system Real-time Collection battery pack, voltage, temperature and other information, and according to these information, Real-Time Monitoring is carried out to battery pack.More common electromagnetic interference is the interference of battery pack to battery management system at present.
Summary of the invention
The object of this invention is to provide a kind of battery module, the interference of battery management system caused to the problem of various fault in order to solve traditional battery module due to battery pack.The present invention provides a kind of battery case simultaneously.
For achieving the above object, the solution of the present invention comprises a kind of battery module, comprise battery case, battery pack and battery management system, described battery case is metal structure, described battery pack is arranged on battery case inside, and the battery management system mounting structure for installing battery management system is arranged on the outside of battery case; Described mounting structure is install by battery case mounting groove that concave side wall is formed and for shutoff the radome that the metal cover board of notch forms, and described battery management system is arranged in described radome.
The string on the collection circuit gathering battery pack relevant information of described battery management system is provided with the first filtering unit, and described first filtering unit is arranged in described radome.
The string on the communication line of related transmitting information of described battery management system is provided with the second filtering unit, described metal cover board sets firmly described second filtering unit.
Described battery case is made up of battery case body and battery case upper cover, and the junction of described battery case body and described battery case upper cover is provided with the ring shielding elastomeric element for filling up gap between the two.
Described ring shielding elastomeric element is metallic conduction shell fragment or conductive rubber strip.
Described battery pack for provide on the power line of electric energy string to be provided with the 3rd filtering unit for power consumption equipment, described 3rd filtering unit is installed on one of them sidewall of battery case.
A kind of battery case, described battery case is metal structure, and the sidewall of described battery case has the mounting groove formed by this concave side wall and the radome formed for the metal cover board that notch is installed in shutoff.
Described battery case is made up of battery case body and battery case upper cover, and the junction of described battery case body and described battery case upper cover is provided with the ring shielding elastomeric element for filling up gap between the two.
Described ring shielding elastomeric element is metallic conduction shell fragment or conductive rubber strip.
In battery module provided by the invention, battery pack and battery management system divide and are located at the inside and outside of metal battery case,---battery pack and the responsive source---isolation between battery management system that can realize interference source by this battery case, the shielding of battery pack to the Radiative EMI of battery management system is realized by this battery case, effectively avoid battery pack to the Radiative EMI of battery management system, the stability that effectively ensure that the data in battery management system and the stability of the collection value of battery pack collected.And, battery management system is arranged in radome,---battery pack and the responsive source---isolation between battery management system that not only can realize interference source further, and this radome can also mask the electromagnetic interference of battery management system for external equipment; In addition, achieve the compact of battery module by the mounting groove arranging indent on sidewall, decrease the volume of battery module, facilitate it to place.
Accompanying drawing explanation
Fig. 1 a is battery operating spectrum analysis figure mono-;
Fig. 1 b is battery operating spectrum analysis figure bis-;
Fig. 1 c is battery operating spectrum analysis figure tri-;
Fig. 2 is the schematic diagram of battery case design;
Fig. 3 is battery case structural blast figure.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Battery module embodiment
The mentality of designing of battery module provided by the invention is: first, gathers the typical discharges current waveform under electrokinetic cell applying working condition, can adopt the discharging current record data of oscillograph recording or use battery management system.Then Fourier transform is adopted, spectrum analysis is carried out to this typical discharges current waveform, as shown in Fig. 1 a, 1b and 1c, according to electronic equipment Electro Magnetic Compatibility index request, determine the index of the frequency range place electromagnetic emission needs decay that electromagnetic interference is concentrated, namely cut down this place's electromagnetic emission amount, can the numerical analysis tools such as Matlab be used; Then, feature according to battery module carries out structural design, mainly carry out the shielding design of battery case, layout is carried out to the battery pack of battery case inside and battery management system, carry out reasonable line arrangement, main interference source (battery pack) and responsive source (battery management system) are isolated, isolation place adopts radome and filter assembly, cuts off interferencing propagation path.Finally, the speed transmitted according to low-voltage signal and interference attenuation require passband and the stopband range of determining filter assembly, and determine the specification of radome etc.
This battery module comprises battery case, battery pack and battery management system, and wherein, battery pack is as electrical source of power, it is electromagnetic interference source, and battery management system is by the object of electromagnetic interference, be responsive source, battery management system is also the interference source of external equipment simultaneously.Radiated interference is by space propagation, and the transmission path of conducted interference is cable.
The present invention is for Conducted Electromagnetic Interference being carried out to the design principle of effectively shielding as shown in Figure 2.
Battery module as shown in Figure 3, it comprises metal battery case, battery pack 3 and battery management system 7, battery case comprises body 4 and box cover 1, battery pack 3 is arranged in case body 4, battery management system 7 is arranged on outside case body 4, by the isolation of metal cabinet, realizes the shielding of electromagnetic interference signal between the two.
Battery management system 7 is arranged on outside case body 4 and is specially: a radome sidewall of battery case body 4 being provided with the mounting groove 5 formed by this concave side wall and forming for the metal cover board 8 that notch is installed in shutoff, battery management system 7 is arranged in this radome.
Battery management system gathers the relevant information of battery pack, the temperature information etc. of the electric current of such as battery pack, voltage and battery pack, and utilize information gathering circuit by the related information transmission of battery pack that collects to battery management system, on this collection circuit, string is provided with gathering line filtering unit 6, this filtering unit 6 can effectively shield Conducted Electromagnetic Interference, ensures the Stability and veracity of collection signal.In addition, this gathering line filtering unit 6 is arranged in radome, ensure that the compact of system.
Generally, entire car controller in battery management system participant electric automobile carries out information interaction, due to the interference source that battery management system is also external equipment, so, when battery management system by information transmission line by information transmission to entire car controller time, easily electromagnetic interference is caused to entire car controller, in order to prevent this situation, the information communication circuit of battery management system and external equipment being gone here and there and is provided with telecommunication filtration assembly; In addition, in order to the convenience of the assembling of the compactedness and battery case that increase battery case, metal cover board 8 sets firmly this telecommunication filtration assembly.
Generally, certain gap is had between battery case body 4 and upper cover 1, the leakage of a large amount of electromagnetic radiations can be caused in this gap, very large electromagnetic interference can be caused to external equipment, even if by accurately measuring between case body 4 and upper cover 1, reach the effect of sealing, but this is visual sealing, it has very little gap eventually, and the leakage of certain electromagnetic radiation still can be caused in this gap.In order to prevent the leakage of electromagnetic radiation, arrange at casing and upper cover junction and shield elastomeric element 2, this elastomeric element is annular element, and these parts can fill up the gap between case body and upper cover.The electromagnetic radiation at the gap place can eliminated between battery case body and upper cover by these parts is revealed, and reaches the object of shielding.Junction refers to the top of all sidewalls and the contact portion of upper cover of casing.Here shielding elastomeric element 2 is the conductive components such as metallic conduction shell fragment (such as finger-like shielding shell fragment) or conductive rubber strip.
Battery pack is for external electric equipment provides electric energy in essence, so, it has the power line for providing electric energy, in order to prevent the problem broken down by the equipment that conducted interference electromagnetic transmission causes to other power consumption equipments by this power line, on this power line, string is provided with a power line filtering unit 9.In addition, in order to the convenience of assembling, and connection that is convenient and external electric equipment, this power line filtering unit 9 is installed on one of them sidewall of battery case body 4.
So, adopt radome not only can eliminate the electromagnetic interference of battery pack to battery management system further, and, the Radiative EMI that battery management system is certain to external equipment can also be shielded; Adopt gathering line filtering unit, the interference can cutting off power battery pack is transferred to the path of battery management system along gathering line, and filtering is carried out to image data, Conducted Electromagnetic Interference in erasure signal transmission, on the basis of radome, further filtering is carried out to the image data of battery management system, while avoiding Radiative EMI, turn avoid Conducted Electromagnetic Interference, by cutting off the path of two kinds of electromagnetic interference, greatly ensure that the effective shielding of battery pack to the electromagnetic interference of battery management system.Adopt telecommunication filtration assembly, the transmission path that battery management system and external electronic device are disturbed each other can be cut off; Adopt power interface filtering unit, the interference can cutting off power battery pack is transmitted along power line.
Battery case embodiment
Battery case is described in detail in above-mentioned battery module embodiment, has not repeated here.
Be presented above concrete execution mode, but the present invention is not limited to described execution mode.Basic ideas of the present invention are above-mentioned basic scheme, and for those of ordinary skill in the art, according to instruction of the present invention, designing the model of various distortion, formula, parameter does not need to spend creative work.The change carried out execution mode without departing from the principles and spirit of the present invention, amendment, replacement and modification still fall within the scope of protection of the present invention.
Claims (9)
1. a battery module, comprise battery case, battery pack and battery management system, it is characterized in that, described battery case is metal structure, described battery pack is arranged on battery case inside, and the battery management system mounting structure for installing battery management system is arranged on the outside of battery case; Described mounting structure is install by battery case mounting groove that concave side wall is formed and for shutoff the radome that the metal cover board of notch forms, and described battery management system is arranged in described radome.
2. battery module according to claim 1, is characterized in that, the string on the collection circuit gathering battery pack relevant information of described battery management system is provided with the first filtering unit, and described first filtering unit is arranged in described radome.
3. battery module according to claim 1, is characterized in that, the string on the communication line of related transmitting information of described battery management system is provided with the second filtering unit, described metal cover board sets firmly described second filtering unit.
4. battery module according to claim 1, it is characterized in that, described battery case is made up of battery case body and battery case upper cover, and the junction of described battery case body and described battery case upper cover is provided with the ring shielding elastomeric element for filling up gap between the two.
5. battery module according to claim 4, is characterized in that, described ring shielding elastomeric element is metallic conduction shell fragment or conductive rubber strip.
6. battery module according to claim 1, is characterized in that, described battery pack for provide on the power line of electric energy string to be provided with the 3rd filtering unit for power consumption equipment, described 3rd filtering unit is installed on one of them sidewall of battery case.
7. a battery case, is characterized in that, described battery case is metal structure, and the sidewall of described battery case has the mounting groove formed by this concave side wall and the radome formed for the metal cover board that notch is installed in shutoff.
8. battery case according to claim 7, it is characterized in that, described battery case is made up of battery case body and battery case upper cover, and the junction of described battery case body and described battery case upper cover is provided with the ring shielding elastomeric element for filling up gap between the two.
9. battery case according to claim 8, is characterized in that, described ring shielding elastomeric element is metallic conduction shell fragment or conductive rubber strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510843129.3A CN105489802B (en) | 2015-11-26 | 2015-11-26 | A kind of battery module and a kind of battery case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510843129.3A CN105489802B (en) | 2015-11-26 | 2015-11-26 | A kind of battery module and a kind of battery case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105489802A true CN105489802A (en) | 2016-04-13 |
| CN105489802B CN105489802B (en) | 2018-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510843129.3A Active CN105489802B (en) | 2015-11-26 | 2015-11-26 | A kind of battery module and a kind of battery case |
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| Country | Link |
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| CN (1) | CN105489802B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299185A (en) * | 2016-08-29 | 2017-01-04 | 天津力神电池股份有限公司 | A kind of modular automotive battery case |
| CN108808139A (en) * | 2018-08-27 | 2018-11-13 | 华霆（合肥）动力技术有限公司 | Battery management module and battery modules |
| CN113474934A (en) * | 2018-11-13 | 2021-10-01 | 瑞伟安知识产权控股有限公司 | Battery module monitoring board EMI reduction |
| CN116552322A (en) * | 2023-07-11 | 2023-08-08 | 深圳市南霸科技有限公司 | Battery management method, system, equipment and storage medium based on CAN-BUS |
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| KR100860712B1 (en) * | 2006-12-12 | 2008-09-29 | 넥스콘 테크놀러지 주식회사 | A Pack Volt Sensing Circuit using Isolation Amplifier for a Hybrid Electric Vehicle and the sensing method thereof |
| CN202839761U (en) * | 2012-08-24 | 2013-03-27 | 长城汽车股份有限公司 | Battery pack used for electric car power batteries |
| CN103078149A (en) * | 2011-10-25 | 2013-05-01 | 现代自动车株式会社 | Battery system for protecting battery management system from electromagnetic waves |
| CN205194758U (en) * | 2015-11-26 | 2016-04-27 | 中航锂电（洛阳）有限公司 | Battery module and battery box |
-
2015
- 2015-11-26 CN CN201510843129.3A patent/CN105489802B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100860712B1 (en) * | 2006-12-12 | 2008-09-29 | 넥스콘 테크놀러지 주식회사 | A Pack Volt Sensing Circuit using Isolation Amplifier for a Hybrid Electric Vehicle and the sensing method thereof |
| CN103078149A (en) * | 2011-10-25 | 2013-05-01 | 现代自动车株式会社 | Battery system for protecting battery management system from electromagnetic waves |
| CN202839761U (en) * | 2012-08-24 | 2013-03-27 | 长城汽车股份有限公司 | Battery pack used for electric car power batteries |
| CN205194758U (en) * | 2015-11-26 | 2016-04-27 | 中航锂电（洛阳）有限公司 | Battery module and battery box |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299185A (en) * | 2016-08-29 | 2017-01-04 | 天津力神电池股份有限公司 | A kind of modular automotive battery case |
| CN108808139A (en) * | 2018-08-27 | 2018-11-13 | 华霆（合肥）动力技术有限公司 | Battery management module and battery modules |
| CN113474934A (en) * | 2018-11-13 | 2021-10-01 | 瑞伟安知识产权控股有限公司 | Battery module monitoring board EMI reduction |
| CN116552322A (en) * | 2023-07-11 | 2023-08-08 | 深圳市南霸科技有限公司 | Battery management method, system, equipment and storage medium based on CAN-BUS |
| CN116552322B (en) * | 2023-07-11 | 2023-09-08 | 深圳市南霸科技有限公司 | Battery management method, system, equipment and storage medium based on CAN-BUS |
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| Publication number | Publication date |
|---|---|
| CN105489802B (en) | 2018-05-04 |
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