CN218823083U - Insulation protection device is touched to new forms of energy power battery package thermal runaway test acupuncture - Google Patents
Insulation protection device is touched to new forms of energy power battery package thermal runaway test acupuncture Download PDFInfo
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- CN218823083U CN218823083U CN202221431113.3U CN202221431113U CN218823083U CN 218823083 U CN218823083 U CN 218823083U CN 202221431113 U CN202221431113 U CN 202221431113U CN 218823083 U CN218823083 U CN 218823083U
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses an insulating protection device is touched to new forms of energy power battery package thermal runaway test acupuncture, the bottom of box is equipped with at least one deck heat conduction pad, is provided with a plurality of electric core stations in the box, and the bottom half is provided with a plurality of insulating flange pipes, and every insulating flange pipe corresponds an electric core station and distributes, and the distribution has a plurality of acupuncture devices under the box, and every acupuncture device corresponds an insulating flange pipe and distributes, insulating flange pipe comprises pipe and flange face, and the bottom half is seted up and is corresponded the installation through-hole that insulating flange pipe distributes, and the through-hole has been seted up to corresponding installation through-hole on the heat conduction pad, and above-mentioned pipe runs through-hole and installation through-hole setting, and above-mentioned flange face supports the heat conduction pad downwards, and the external diameter of flange face is greater than the aperture of through-hole and installation through-hole, and acupuncture device department is equipped with a steel needle, can effectively avoid aforementioned two problems through installing insulating flange pipe for the battery package.
Description
Technical Field
The utility model belongs to the technical field of the technique of battery package thermal runaway test scheme and specifically relates to an insulation protection device is touched to new forms of energy power battery package thermal runaway test acupuncture, in particular to its mechanical connection structure.
Background
With the continuous improvement of domestic and foreign standards related to safety requirements of new energy automobile power storage batteries, the requirements of enterprises on design and verification of power battery thermal runaway protection are continuously improved.
Because the thermal runaway test principle is that the internal short circuit of the battery cell is simulated by an external action to design a test scheme, how to approach the actual situation to realize the thermal runaway of the battery cell has certain challenges. GB/T36376-2018 stipulates that a heating method triggers thermal runaway of a single battery cell or a single battery in a battery module, namely a heating device is arranged on the surface of the single battery cell, and internal short circuit is realized through external heating so as to trigger thermal runaway. GB/T36376-2018 further provides that an overcharging mode triggers thermal runaway of a single body in the battery module, namely, an extra lead is connected to a triggering object to realize overcharging so as to trigger the thermal runaway. GB 38031-2020 does not make specific provisions on the triggering mode of thermal runaway of single battery cells in a battery pack, but recommends two triggering modes, namely heating and needling, wherein the heating mode is consistent with the above. The needling mode is to directly pierce the electric core through a steel needle to realize internal short circuit and trigger thermal runaway.
The thermal runaway triggered by heating, over-charging or needling has respective advantages and disadvantages.
The battery is more easily made to the heating mode, does not need special test bench, only needs commercial power or direct current can realize heating and trigger. However, even if the power supply heating is stopped immediately after the single battery cell triggers thermal runaway, the heating device still has high-energy waste heat which cannot be removed to continue heating the single battery, so that overheating can be caused, and the test verification result is seriously interfered.
The overcharging mode is relatively easy to modify the battery, a special test bench is not needed, the overcharging mode needs to be realized by matching with the battery cell charging equipment, and the safe and reliable connection of an additional wire to a triggering object is difficult to realize only by a simple tool in a manual mode. Meanwhile, when the overcharge triggers the thermal runaway of the single battery core, the battery core is in an overcharge state far exceeding the charge capacity of a full charge state, and the test verification result is also seriously interfered.
The acupuncture mode triggers thermal runaway can realize that slow step acupuncture electricity core, in case trigger stops acupuncture immediately, can not introduce extra energy, more approaches actual conditions. However, the sample piece modification process triggered by needling is relatively complex, and needling holes are required to be formed step by step from the whole package of the battery core and the module. Too large an opening would directly affect the air tightness of the battery pack causing excessive leakage of combustible fumes and sparks, which in severe cases could cause the out-of-battery fumes to catch fire. The insulation treatment of the open pores directly influences the insulation performance of the battery pack, and further directly influences the alarm of the battery management system to the thermal runaway event. For a battery pack which needs to simultaneously trigger a plurality of battery cells through needling, short circuit ignition between the battery cells can occur during needling due to failure of opening insulation treatment, and the external part of the battery pack is ignited.
The above three thermal runaway triggering methods are widely adopted at present, however, in order to reduce the influence of the triggering method on the thermal runaway result as much as possible, only the needling method is most likely to achieve the goal, and therefore the key problem is to design a feasible needling triggering method and an insulation protection device.
Disclosure of Invention
An object of the utility model is to provide an insulating protection device is touched to new forms of energy power battery package thermal runaway test acupuncture, and insulation processing is done to the acupuncture passageway, reduces the influence of trigger mode to the thermal runaway result. Overcomes the defects in the prior art.
In order to realize the purpose, the technical scheme of the utility model is that: the utility model provides a new forms of energy power battery package thermal runaway test acupuncture touches insulating protection device, the power distribution box comprises a box body, the bottom of box is equipped with at least one deck heat conduction pad, is provided with a plurality of electric core stations in the box, and the bottom half is provided with a plurality of insulating flange pipes, and every insulating flange pipe corresponds an electric core station and distributes, and the part distributes under the box has a plurality of acupuncture devices, and every acupuncture device corresponds an insulating flange pipe and distributes, insulating flange pipe comprises pipe and flange faceThe installation through-hole that corresponds insulating flange pipe distribution is seted up to the bottom half, and the through-hole has been seted up to corresponding installation through-hole on the heat conduction pad, and above-mentioned pipe runs through the through-hole and sets up with the installation through-hole, and above-mentioned flange face supports the heat conduction pad downwards, and the external diameter of flange face is greater than the aperture of through-hole and installation through-hole, and acupuncture device department is equipped with a steel needle, and the one end of steel needle forms most advanced, and the pipe lower extreme installation surpasss the outer terminal surface of bottom half, and the steel needle diameter is marked as D 1 Inner diameter of the circular tube is marked as D 2-1 And the outer diameter of the round tube is marked as D 2-2 Length of the tube is marked as L 2 And the outer diameter of the flange surface is marked as D 2-3 Flange face thickness is denoted as Thk 2 Thickness of the thermal pad is denoted as Thk 302， The hole diameter of the through hole is marked as D 302 And the bottom thickness of the box is Thk 301 And the diameter of the mounting through hole is marked as D 301 Wherein, 3 is less than or equal to D 1 ≤ 8，Thk 2 < Thk 302 ，D 1 < D 2-1 ≤ D 1 +1，D 2-2 < D 301 ≤ D 2-2 +1，D 301 +5 < D 2-3 ，D 2-3 < D 302 ≤ D 2-3 +1, Thk 301 < L 2 。
The needling method is bottom needling, and a steel needle of the needling device penetrates into the battery cell 10 from the bottom of the battery pack through the box body.
The utility model discloses a new forms of energy power battery package thermal runaway test acupuncture touches insulation protection device, and the acupuncture triggers the thermal runaway mode and makes acupuncture passageway aperture as far as possible little, effectively avoids electric core to touch flue gas, the spark that produces after the thermal runaway and escapes from acupuncture passageway. If the needling channel is not subjected to insulation treatment, on one hand, a steel needle of the needling device is very easy to contact the box body, so that the steel needle and the box body are in short circuit after the metal shell of the battery cell is pierced, and an insulation fault is caused; on the other hand, when a plurality of battery cells are simultaneously needled, short circuit between the battery cells is easily caused, severe discharge and ignition are caused, and the battery pack is ignited and burnt. The aforementioned two problems can be effectively avoided by installing an insulating flange tube for the battery pack.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the structure of the insulating flange of the present invention.
Fig. 3 is a side view of the insulating flange pipe of the present invention.
Fig. 4 is a usage state diagram of the present invention.
Fig. 5 is an exploded view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of the present invention.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the present invention, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The utility model discloses an insulating protection device is touched to new forms of energy power battery package thermal runaway test acupuncture, as shown in fig. 1, including box 1, it is different from currentThe technology is as follows: the top of the box body 1 is provided with a box cover 9; the bottom of the box body 1 is provided with at least one layer of heat conducting pad 2, a plurality of cell stations 3 are arranged in the box body 1, a cell is placed at each cell station 3, the cells are connected through a copper bar 11, a plurality of insulating flange pipes 4 are arranged at the bottom of the box body 1, each insulating flange pipe 4 is distributed corresponding to one cell station 3, a plurality of needling devices are distributed at the lower part of the box body 1, each needling device is distributed corresponding to one insulating flange pipe 4, each insulating flange pipe 4 is composed of a circular pipe 6 and a flange surface 7, mounting through holes distributed corresponding to the insulating flange pipes 4 are arranged at the bottom of the box body 1, the lower terminal surface of flange face 7 forms the matte face, it has seted up the through-hole to correspond the installation through-hole on the heat conduction pad 2, above-mentioned pipe 6 runs through the through-hole and the setting of installation through-hole, above-mentioned flange face 7 supports heat conduction pad 2 downwards, the external diameter of flange face 7 is greater than the aperture of through-hole and installation through-hole, acupuncture device department is equipped with a steel needle 5, the one end of steel needle 5 forms most advanced 8, the non-most advanced conventional insulation of doing of steel needle is handled, most advanced carries out insulation isolation through the insulating flange pipe of bottom installation in the box, 6 lower extreme installations of pipe surpass the outer terminal surface in box 1 bottom, 5 diameters of steel needle are marked as D 1 And the inner diameter of the round tube 6 is marked as D 2-1 D represents the outer diameter of the circular tube 6 2-2 And the length of the round tube 6 is marked as L 2 And the outer diameter of the flange surface 7 is marked as D 2-3 And flange face 7 thickness is denoted as Thk 2 Thickness of the thermal pad 2 is denoted as Thk 302， The hole diameter of the through hole is marked as D 302 The bottom thickness of the box 1 is Thk 301 And the diameter of the mounting through hole is marked as D 301 Wherein preferably, the dimensions are as follows (units/mm);
in specific implementation, 3 is less than or equal to D 1 ≤ 8；
Thk 2 < Thk 302 The thickness of the flange surface is controlled to be smaller than that of the heat conducting pad, so that stress of the insulating flange pipe on the battery cell is avoided;
D 1 < D 2-1 ≤ D 1 +1, controlling the aperture of the needling channel to avoid the escape of smoke and sparks from the needling channel as much as possible;
D 2-2 < D 301 ≤ D 2-2 +1, control the relative position of a plurality of insulating flange pipes installed in the box, avoid the acupuncture deviceThe installation deviation of the plurality of steel pins and the insulating flange pipe;
D 301 +5 < D 2-3 the diameter of the flange surface is controlled to be larger than that of the opening of the box body, so that the insulating flange pipe is prevented from falling outside the battery pack;
D 2-3 < D 302 ≤ D 2-3 +1, controlling the opening of the heat conducting pad to be slightly larger than the diameter of the flange surface, and avoiding the heat conducting pad being incapable of being installed;
Thk 301 < L 2， the pipe installation of control insulating flange pipe surpasss the outer terminal surface of box, avoids insulating clearance not enough.
And (3) an installation mode of the insulating flange pipe. The box and the trompil of heat conduction pad, outside the pipe of insulating flange pipe passed box and heat conduction pad and stretched out the box downwards from battery package inside, flange face diameter was greater than the trompil diameter of box, can block flange face and insulating flange pipe and can not drop outside the battery package box after the electric core assembly income case.
In specific practice, the D 1 = 6mm, Thk 2 =1mm, Thk 302 =1.5mm，D 2-1 = 8mm，D 2-2 = 12mm，D 301 = 10mm，D 2-3 =20mm，D 302 = 22mm，Thk 301 =4mm，L 2 =8mm。
In specific implementation, the insulating flange pipe 4 is made of FR-4 glass fiber board. Preferably, the insulating flange pipe is made of a material which can be formed and machined, has the bending strength and the tensile strength higher than 300MPa, can resist the high temperature of more than 300 ℃ and has excellent insulating property.
The foregoing is a more detailed description of the invention, taken in conjunction with the accompanying preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described above. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (4)
1. New forms of energy power battery package thermal runaway test acupuncture touches insulating protection device, includeBox (1), its characterized in that: the bottom of box (1) is equipped with at least one deck heat conduction pad (2), is provided with a plurality of electric core stations (3) in box (1), and box (1) bottom is provided with a plurality of insulating flange pipe (4), and every insulating flange pipe (4) correspond an electric core station (3) and distribute, and box (1) is divided to distribute down a plurality of acupuncture devices, and every acupuncture device corresponds an insulating flange pipe (4) and distributes, insulating flange pipe (4) comprise pipe (6) and flange face (7), and the installation through-hole that corresponds insulating flange pipe (4) and distribute is seted up to box (1) bottom, corresponds the installation through-hole on heat conduction pad (2) and has seted up through-hole (12), and above-mentioned pipe (6) run through the through-hole and the installation through-hole setting, and above-mentioned flange face (7) support heat conduction pad (2) downwards, and the external diameter of flange face (7) is greater than the aperture of through-hole and installation through-hole, and acupuncture device department is equipped with a steel needle (5), and the one end of steel needle (5) forms most advanced (8), and pipe (6) lower extreme installation surpass box (1) bottom installation, and the box (6) bottom, and the outer terminal diameter marks as outer terminal diameter, and the outer terminal diameter 1 The inner diameter of the round tube (6) is marked as D 2-1 The outer diameter of the round tube (6) is marked as D 2-2 The length of the round tube (6) is marked as L 2 And the outer diameter of the flange surface (7) is marked as D 2-3 The thickness of the flange face (7) is Thk 2 The thickness of the heat conducting pad (2) is recorded as Thk 302， The diameter of the through-hole is marked as D 302 The thickness of the bottom of the box body (1) is Thk 301 And the diameter of the mounting through hole is marked as D 301 Wherein, 3 is less than or equal to D 1 ≤ 8，Thk 2 < Thk 302 ，D 1 < D 2-1 ≤ D 1 +1，D 2-2 < D 301 ≤ D 2-2 +1，D 301 +5 < D 2-3 ，D 2-3 < D 302 ≤ D 2-3 +1, Thk 301 < L 2 。
2. The new energy power battery pack thermal runaway test needle touch insulation protection device as claimed in claim 1, characterized in that: said D 1 = 6mm, Thk 2 =1mm, Thk 302 =1.5mm，D 2-1 = 8mm，D 2-2 = 12mm，D 301 = 10mm，D 2-3 =20mm，D 302 = 22mm，Thk 301 =4mm，L 2 =8mm。
3. The new energy power battery pack thermal runaway test needle touch insulation protection device as claimed in claim 1, characterized in that: the insulating flange pipe (4) is made of FR-4 glass fiber board.
4. The new forms of energy power battery package thermal runaway test acupuncture touches insulating protection device according to claim 1, characterized in that: the top of the box body (1) is provided with a box cover (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221431113.3U CN218823083U (en) | 2022-06-09 | 2022-06-09 | Insulation protection device is touched to new forms of energy power battery package thermal runaway test acupuncture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221431113.3U CN218823083U (en) | 2022-06-09 | 2022-06-09 | Insulation protection device is touched to new forms of energy power battery package thermal runaway test acupuncture |
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| Publication Number | Publication Date |
|---|---|
| CN218823083U true CN218823083U (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221431113.3U Active CN218823083U (en) | 2022-06-09 | 2022-06-09 | Insulation protection device is touched to new forms of energy power battery package thermal runaway test acupuncture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218823083U (en) |
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2022
- 2022-06-09 CN CN202221431113.3U patent/CN218823083U/en active Active
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