CN111180629A - High-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover for power battery pack and manufacturing method of high-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover - Google Patents
High-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover for power battery pack and manufacturing method of high-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover Download PDFInfo
- Publication number
- CN111180629A CN111180629A CN202010071845.5A CN202010071845A CN111180629A CN 111180629 A CN111180629 A CN 111180629A CN 202010071845 A CN202010071845 A CN 202010071845A CN 111180629 A CN111180629 A CN 111180629A
- Authority
- CN
- China
- Prior art keywords
- plug connector
- pressure
- resistant
- housing
- shell
- 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.)
- Pending
Links
Images
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/64—Constructional details of batteries specially adapted for electric vehicles
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a high-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover of a power battery pack and a manufacturing method thereof, wherein a protection cover shell is a square shell, the shell is arranged at the front part of a battery frame at one side of a BMS power management system at the front end of a battery module and covers high-voltage heavy-current control components, latticed reinforcing ribs are arranged on the inner walls of the shell at the front side, the rear side, the left side, the right side and the upper side, an avoidance notch I of a positive plug connector or a negative plug connector is arranged at the bottom of the shell at the center of the front side, avoidance notches are arranged at the front and rear shell bottoms at the end part of the cover at one side of an automatic controller, the height of the avoidance notch on the front shell is larger than that of the negative plug connector or the positive plug connector; the protective cover is made by adding a high molecular material methyl vinyl silicone rubber into a dipenta-vulcanizing agent, light calcium carbonate and a flame retardant aluminum hydroxide, mixing, and extruding and molding in a die at high temperature and high pressure.
Description
Technical Field
The invention relates to the technology of new energy automobiles, in particular to a high-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover for a power battery pack and a manufacturing method thereof.
Background
The traditional manufacturing process of the battery module of the electric automobile comprises the following steps: the battery cores are connected one by one to form a module unit, the module units form a required battery module, the battery module is installed in the battery frame, and the battery module provides direct current meeting power consumption requirements for each power consumption unit of the automobile through high-voltage large-current control components arranged on the front portion of the battery frame.
According to the insulation requirement of the vehicle, the exposed cable and the joint of the high-voltage high-current control component are subjected to insulation protection and wrapping treatment, so that effective insulation between the high-voltage high-current control component and the battery rack in the normal running process of the electric vehicle is ensured.
However, when the electric automobile collides and turns over, the battery frame is easy to deform, so that the battery module and the high-voltage high-current control component are collided or extruded, the high-voltage high-current control component at the moment is most easily damaged, and the cable and the connector wrapped by the insulation protection are exposed, so that the battery frame is electrified to cause electric shock or short circuit to burn the battery module.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a high-pressure high-temperature resistant flame-retardant insulating safety protection cover for a power battery pack for preventing electric shock or short circuit and a manufacturing method thereof.
The high-pressure high-temperature resistant flame-retardant insulating safety protection cover of the power battery pack can solve the technical problems, its technical scheme includes the housing, the difference is that the housing is the open square casing in bottom, the casing is installed at the battery rack front portion of battery module front end BMS power management system one side and is covered on high-pressure heavy current control components and parts, the front side, the rear side, the left side, be equipped with latticed strengthening rib strip on the shells inner wall of right side and upside, positive bayonet joint or negative pole bayonet joint's the notch I of dodging is seted up to the casing bottom of front side central authorities, before the housing tip of BMS power management system one side, the breach of dodging has been seted up to back casing bottom, the height of dodging the breach on the procapsid is greater than negative pole bayonet joint or positive bayonet joint, it dodges notch II to have seted up the cable on the casing of breach department is dodged to the back, it dod.
In order to obtain better strength effect, the reinforcing ribs are designed into a honeycomb shape.
Conventionally, the length direction of the housing is left and right, and the width direction is front and back.
The manufacturing method of the high-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover of the power battery pack comprises material selection, process proportion and product preparation, wherein the material selection, the process proportion and the product preparation are carried out
1. Material selection: adopts high molecular material methyl vinyl silicone rubber with molecular weight of 40-50 ten thousand.
2. The process ratio is as follows: adding a dipentavulcanizing agent into the methyl vinyl silicone rubber according to the proportion of 1000:15, mixing to obtain mixed rubber, adding light calcium carbonate with 400-600 meshes and flame retardant aluminum hydroxide with 0.5-20 mu into the mixed rubber, wherein the proportion of the mixed rubber, the light calcium carbonate and the flame retardant aluminum hydroxide is 1000:300: 50.
3. Preparation of a product: and extruding and molding the mixed rubber in a die at a high temperature of between 180 and 200 ℃ and under a high pressure of at least 150 MPa.
The invention has the beneficial effects that:
1. the high-voltage and high-temperature resistant flame-retardant insulating safety protection cover for the power battery pack can effectively protect high-voltage and high-current control components from being damaged when an electric automobile collides and rolls over.
2. The invention not only obtains larger impact strength through structural design, but also obtains high-performance rubber compound through selecting high polymer materials and adding according to a formula, and the high-performance rubber compound is extruded and formed into a protective cover body with high pressure resistance, high temperature resistance, flame retardance and insulation safety under high temperature and high pressure.
Drawings
FIG. 1 is a diagram illustrating the effect of the present invention.
Fig. 2 is a view taken along direction a in fig. 1.
Fig. 3 is a bottom view of fig. 2.
Fig. 4(a) is a bottom view of fig. 3.
Fig. 4(b) is a top view of fig. 3.
And (3) identifying the figure number: 1. a housing; 1-1, reinforcing ribs; 1-2, avoiding a notch I; 1-3, avoiding the notch; 1-4, a cable avoiding notch II; 1-5, a cable avoiding notch III; 2. a battery module; 3. a battery holder; 4. a BMS power management system; 5. a positive electrode plug; 6. and a negative electrode plug.
Detailed Description
The technical solution of the present invention will be further explained with reference to the embodiments shown in the drawings.
The high-voltage high-temperature resistant flame-retardant insulating safety protection cover for the power battery pack is suitable for protecting high-voltage heavy-current control components of a battery module 2 of an electric vehicle, the battery module 2 (formed by connecting eight module units in series and parallel) is installed in a battery frame 3, a strip-shaped left-right rectangular area is reserved between the battery module 2 and the front end of the battery frame 3 for arranging the high-voltage heavy-current control components (arranged on the right) and a BMS power management system 4 (arranged on the left), a cover body 1 of the protection cover is a rectangular shell with an open bottom, the front width and the rear width of the cover body 1 are matched with the distance between the battery module 2 and the front end of the battery frame 3, the cover body 1 is installed between the battery module and the BMS power management system by four front, rear, left and right screws, the right end face of the cover body 1 is flatly attached to the right inner face of the battery frame 3, the height of the cover body 1 is level to the top of, the cover body 1 installed in place covers the high-voltage large-current control component therein for protection, when the cover body 1 is installed, cables connected between the positive plug connector 5 and the negative plug connector 6 and between the high-voltage large-current control component and the battery module 2 need to be avoided, the negative plug connector 6 and the positive plug connector 5 are arranged left and right on a front end frame body of the battery frame 3, and the position of the negative plug connector 6 is located on the right side edge of the BMS power management system 4, as shown in FIG. 1.
The rectangular shell structure of the cover body 1 is as follows:
1. the inner walls of the shell on the front side, the rear side, the left side, the right side and the upper side of the cover body 1 are provided with honeycomb-shaped reinforcing ribs 1-1, as shown in fig. 3, 4(a) and 4 (b).
2. The bottom of the shell at the center of the front side of the cover body 1 is upwards (internally) provided with a square avoidance notch I1-2 of the positive plug connector 5, as shown in fig. 4 (a).
3. The bottom of the front shell and the bottom of the rear shell at the left end of the housing 1 are provided with two-stage step avoiding notches 1-3 from inside to outside, the height of the outer stage step avoiding the notches 1-3 on the front shell is larger than that of the negative plug 6, and the outer stage step avoiding the notches 1-3 on the rear shell is provided with semicircular cable avoiding notches II 1-4 so as to avoid connecting cables of the battery module 2 and high-voltage large-current control components at corresponding positions, as shown in fig. 4(a) and 4 (b).
4. An inwards concave square cable avoidance notch III 1-5 is formed in the rear side shell at the right end of the housing 1 so as to avoid the connecting cable between the battery module 2 at the corresponding position and the high-voltage large-current control component, as shown in fig. 2, 3 and 4 (b).
The invention relates to a manufacturing method of a high-pressure and high-temperature resistant flame-retardant insulating safety protection cover of a power battery pack, which comprises the following steps of material selection, process proportioning and product preparation:
1. and (4) selecting materials. Adopts high molecular material methyl vinyl silicone rubber with molecular weight of 40-50 ten thousand.
2. And (4) proportioning the processes. The methyl vinyl silicone rubber is filled with a dipentavulcanizing agent according to the ratio of 1000:15 and then is mixed to form mixed rubber, and the mixed rubber is added with 400-600 mesh light calcium carbonate and 0.5-20 mu of flame retardant aluminum hydroxide according to the ratio of 1000:300:50, so that the high temperature resistance, high pressure resistance and insulating property of the rubber are enhanced.
3. And (5) preparing a product. Firstly, a mould is placed on a working table top of a 300-ton full-automatic flat plate oil press, and then mixed rubber compound is placed in the mould for extrusion molding (the high temperature of 180-200 ℃ and the high pressure of 150MPa lasts for 5 minutes).
The insulation resistance test report of the protective cover produced by the manufacturing method is as follows:
the protective cover specification is 218mm multiplied by 170mm multiplied by 6mm
The test instrument adopts an ST5520 insulation resistance tester and a GM320 temperature tester.
The test environment was a shield heated to 65 ℃ at 24 ℃ ambient temperature with an ambient relative humidity of 73%.
The voltage range of the ST5520 insulation resistance tester is set to DC400V and the resistance range is set to automatic.
The test basis is GB/T18384.3-2015 part 3 of the safety requirement of electric vehicles: protection against electric shock for persons, the minimum value of the insulation resistance of the direct current circuit is at least greater than 100 Ω/V at the maximum operating voltage, and the alternating current circuit should be at least greater than 500 Ω/V.
The test method is that a red meter pen of the ST5520 insulation resistance tester is connected to one end of the protective cover, and a black meter pen is connected to the other end of the protective cover; the insulation resistance values of the protective cover at the normal temperature of 24 ℃ and the temperature of 65 ℃ can be measured by pressing a green start button on an ST5520 insulation resistance tester respectively.
The insulation resistance value of the protective cover is 1785 MOmega at the normal temperature of 24 ℃; when the temperature is increased to 65 ℃, the insulation resistance value of the protective cover is 1270M omega.
The measured values show that the protective cover manufactured by the method has good insulating property and completely meets the part 3 of the safety requirement of the electric automobile of GB/T18384.3-2015: in the protection against electric shock of personnel, the minimum value of the insulation resistance of a direct current circuit is at least more than 100 omega/V under the maximum working voltage, and the minimum value of the insulation resistance of an alternating current circuit is required to be at least more than 500 omega/V.
The high temperature resistance test of the specification protective cover: and (3) putting the protective cover into a BW-GWHX-100 type high-temperature oven, setting the temperature to be 480 ℃ and the time to be 45 minutes, taking out the protective cover after heating, and recovering to normal temperature without any deformation damage of the protective cover.
Claims (4)
1. Power battery wraps fire-retardant insulating safety protection casing of high pressure and high temperature resistant, including housing (1), its characterized in that: the housing (1) is a square housing with an open bottom, the housing is arranged at the front part of a battery frame (3) at one side of a BMS power management system (4) at the front end of the battery module (2) and covers the high-voltage heavy-current control component, latticed reinforcing ribs (1-1) are arranged on the inner walls of the housing at the front side, the rear side, the left side, the right side and the upper side, an avoidance notch I (1-2) of an anode plug connector (5) or a cathode plug connector (6) is arranged at the bottom of the housing at the center of the front side, avoidance notches (1-3) of the cathode plug connector (6) or the anode plug connector (5) are arranged at the bottom of the front and rear housings at the end part of the housing (1) at one side of the automatic controller (4), the avoidance notches (1-3) are higher than the cathode plug connector (6) or the anode plug connector (5), and cable avoidance notches II (1-4) are arranged on the, and a rear side shell at the other end of the housing (1) is provided with a cable avoiding notch III (1-5).
2. The high-pressure high-temperature resistant flame-retardant insulating safety protection cover of the power battery pack according to claim 1, characterized in that: the reinforcing ribs (1-1) are honeycomb-shaped.
3. The high-pressure high-temperature resistant flame-retardant insulating safety shield of the power battery pack according to claim 1 or 2, characterized in that: the length direction of the housing (1) is left and right, and the width direction is front and back.
4. The manufacturing method of the high-pressure high-temperature resistant and flame-retardant insulating safety shield of the power battery pack according to claim 1 or 2 is characterized by comprising material selection, process proportioning and product preparation, wherein
①, selecting materials, namely adopting a high polymer material methyl vinyl silicone rubber with the molecular weight of 40-50 ten thousand;
adding a dipenta vulcanizing agent into the methyl vinyl silicone rubber according to the ratio of 1000:15, mixing to obtain mixed rubber, adding 400-600 mesh light calcium carbonate and 0.5-20 mu of flame retardant aluminum hydroxide into the mixed rubber, wherein the ratio of the light calcium carbonate to the flame retardant aluminum hydroxide is 1000:300: 50;
thirdly, the product is prepared by extruding and molding the mixed rubber in a mould at a high temperature of 180-200 ℃ and a high pressure of at least 150 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010071845.5A CN111180629A (en) | 2020-01-21 | 2020-01-21 | High-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover for power battery pack and manufacturing method of high-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010071845.5A CN111180629A (en) | 2020-01-21 | 2020-01-21 | High-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover for power battery pack and manufacturing method of high-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111180629A true CN111180629A (en) | 2020-05-19 |
Family
ID=70656533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010071845.5A Pending CN111180629A (en) | 2020-01-21 | 2020-01-21 | High-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover for power battery pack and manufacturing method of high-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111180629A (en) |
-
2020
- 2020-01-21 CN CN202010071845.5A patent/CN111180629A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101938016A (en) | Modular lithium-iron power battery | |
| CN212514927U (en) | Battery test box and battery test device | |
| CN212125038U (en) | BDU integrated arrangement device of power battery | |
| CN106026262A (en) | Lithium ion battery module safety protection system | |
| CN211629163U (en) | High-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover for power battery pack | |
| CN111180629A (en) | High-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover for power battery pack and manufacturing method of high-pressure-resistant high-temperature-resistant flame-retardant insulating safety protection cover | |
| CN205985180U (en) | Copper bar high-voltage protective sleeve | |
| CN211980441U (en) | Fire-retardant resistant thin film capacitor who punctures of preventing fires | |
| CN212968099U (en) | High-voltage connector safety protection device and battery pack | |
| CN214478271U (en) | Special wire discharges | |
| CN214625306U (en) | Battery thermal runaway prevention isolation assembly, battery module and battery pack | |
| CN208111501U (en) | Power battery system high-voltage box | |
| CN111541293A (en) | Split type high-voltage box of power battery system | |
| CN212810468U (en) | Battery pack for preventing thermal runaway | |
| CN204271160U (en) | A kind of Soft Roll electrokinetic cell module | |
| CN205960074U (en) | Battery module with high -temperature gas access structure | |
| CN209402039U (en) | The intelligent electric case of arrester wireless installation is carried out using copper bar | |
| CN206505965U (en) | A kind of structure insulated for battery bag | |
| CN218769942U (en) | Safe arrangement structure of electric motor car lithium cell group | |
| CN213304517U (en) | Power connector with overvoltage protection function | |
| CN206678795U (en) | A kind of new-energy automobile high voltage control cartridge | |
| CN116544071B (en) | Leakage protection equipment for new energy automobile battery | |
| CN214757285U (en) | Safety protection warning intelligent power supply case | |
| CN212784800U (en) | Split type high-voltage box of power battery system | |
| JP3241789U (en) | automotive auxiliary booster |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |