CN214313400U

CN214313400U - Fireproof battery pack

Info

Publication number: CN214313400U
Application number: CN202023102027.1U
Authority: CN
Inventors: 李小兵; 江宜建; 郭玉杰
Original assignee: Boke Energy System Shenzhen Co ltd
Current assignee: Boke Energy System Shenzhen Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-09-28
Anticipated expiration: 2030-12-21

Abstract

The utility model relates to a fireproof battery pack, which comprises a fireproof flame-retardant bracket, a protective plate, an output line, a first electrode plate, a second electrode plate and an electric core group; the fireproof flame-retardant support comprises a protective cover, an upper support, a lower support, a top plate and a bottom plate, the upper support, the lower support, the top plate and the bottom plate are enclosed to form a sealed cavity, and the electric core group, the first electrode plate, the second electrode plate and the protective plate are accommodated in the sealed cavity; a first accommodating cavity is formed in one end, close to the lower support, of the upper support, a second accommodating cavity is formed in one end, close to the upper support, of the lower support, and the first accommodating cavity and the second accommodating cavity are communicated with each other to form a battery cavity for mounting the electric core pack; the one end that is close to the roof of upper bracket is provided with the installation department, and the protection shield is fixed in one side that deviates from first chamber that holds of installation department. Compared with the prior art, the fireproof protective screen is formed by the protective cover, the upper support, the lower support, the top plate and the bottom plate, the fireproof grade requirement of UL94-V0 can be met, and the safety performance of the fireproof battery pack is improved.

Description

Fireproof battery pack

Technical Field

The utility model belongs to the technical field of the consumer electronics battery, especially, relate to a fire prevention battery package.

Background

Audio products such as a Bluetooth sound box are sold in the European and American markets, the whole product mandatory requirements are certified by IEC62368, and when the output power of a battery pack in the Bluetooth sound box meets the energy definition of PS1/PS2/PS3, both the Bluetooth sound box and the battery pack need to meet the structural design of a fireproof shell or a fireproof barrier of UL 94-V0.

The cylinder battery package that bluetooth speaker mostly used many strings and many parallels, current battery package is in the use, if certain electric core is on fire because various reasons such as short circuit, will arouse other electric cores or other electronic component in the battery package to be on fire, finally can burn to the outside of battery package to other structures that lead to bluetooth speaker damage. The safety performance of the battery pack is low, the safe use experience of customers is influenced, a certain degree of economic loss is caused, and the requirement of the fire-proof grade of UL94-V0 is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: to the problem that the battery package security performance of current bluetooth speaker is low, provide a fire prevention battery package.

In order to solve the technical problem, an embodiment of the utility model provides a fireproof battery pack, which comprises a fireproof flame-retardant bracket, a protective plate, an output line, a first electrode plate, a second electrode plate and an electric core group; the fireproof flame-retardant support comprises a protective cover, an upper support, a lower support, a top plate and a bottom plate, the upper support covers the lower support, the top plate is fixed at the top of the upper support, the bottom plate is fixed at the bottom of the lower support, the protective cover covers the outer surfaces of the upper support and the lower support, the upper support, the lower support, the top plate and the bottom plate form a sealed cavity in an enclosing mode, and the electric core group, the first electrode plate, the second electrode plate and the protective plate are contained in the sealed cavity;

a first accommodating cavity is formed in one end, close to the lower support, of the upper support, a second accommodating cavity is formed in one end, close to the upper support, of the lower support, and the first accommodating cavity and the second accommodating cavity are communicated with each other to form a battery cavity for mounting the battery pack; an installation part is arranged at one end of the upper bracket close to the top plate, the protection plate is fixed at one side of the installation part, which is far away from the first accommodating cavity, the first electrode plate is electrically connected with the protection plate and the first end of the electric core group, and the second electrode plate is electrically connected with the protection plate and the second end of the electric core group;

the output line is fixed on the fireproof flame-retardant support, one end of the output line is electrically connected with the protection plate, and the other end of the output line penetrates through the fireproof flame-retardant support and is connected with an external electronic element.

Optionally, fire prevention fire-retardant support still includes the buckle, the buckle with the upper bracket joint, the output line is fixed on the buckle, the one end of output line passes the buckle and is connected with outside electronic component.

Optionally, the clip is injection molded on the output line.

Optionally, the electric core group includes a plurality of electric cores, first the chamber that holds is close to the one end of installation department is provided with first spacing portion, be provided with a plurality of mutual isolation's first spacing hole in the first spacing portion, first spacing hole with electric core one-to-one, keeping away from in the second chamber first the one end that holds the chamber is provided with the spacing portion of second, be provided with a plurality of mutual isolation's the spacing hole of second in the spacing portion of second, the spacing hole of second with electric core one-to-one, the one end of electric core is located first spacing downthehole, the other end of electric core is located the spacing downthehole of second.

Optionally, one side of the first limiting portion, which is close to the mounting portion, is provided with a notch, and the notch communicates with the two first limiting holes.

Optionally, be equipped with a plurality of screw holes on the installation department, it is a plurality of the screw hole sets up in a staggered way, the screw with screw hole threaded connection is in order to fix the protection shield on the installation department.

Optionally, the fireproof battery pack further comprises an insulating plate disposed between the mounting part and the protective plate; the first electrode plate comprises a first connecting part and a second connecting part connected to the first connecting part, the first connecting part is electrically connected with one end, close to the top plate, of the electrode core group, and the second connecting part penetrates through the insulating plate to be electrically connected with the protective plate.

Optionally, the fireproof battery pack further comprises a sleeve, the outer surface of the fireproof flame-retardant support is coated with the sleeve, and a mounting hole for avoiding the output line is formed in the sleeve.

Optionally, the fire prevention battery package still includes the bolster, the top and the bottom of fire prevention fire-retardant support of fire prevention cladding respectively have the bolster.

Optionally, a first fool-proof post protruding toward the lower bracket is arranged on an end surface of the upper bracket, which covers the lower bracket, a first fool-proof hole is arranged at a position of the lower bracket, which corresponds to the first fool-proof post, and the first fool-proof post is inserted into the first fool-proof hole; the lower bracket and the end face that the upper bracket lid closed are provided with to the convex second of upper bracket prevents slow-witted post, the upper bracket with the position that the second prevented slow-witted post corresponds is provided with the second and prevents slow-witted hole, the second prevents slow-witted post and inserts the second prevents slow-witted downthehole.

Compared with the prior art, the embodiment of the utility model provides a fire-proof battery pack, upper bracket, lower carriage, roof and bottom plate enclose to close and form sealed chamber, and electric core group, first electrode piece, second electrode piece and protection shield hold in sealed chamber, just the utility model discloses fire-proof battery pack adopts fire-proof flame retardant support, and when the electronic component of fire-proof battery pack inside broke down and started a fire, protection casing, upper bracket, lower carriage, roof and bottom plate formed a fire barrier, can satisfy the fire-proof rating requirement of UL94-V0, made flame can only burn in sealed chamber, can not burn to outside fire-proof battery pack, avoided damaging other structures outside fire-proof battery pack, reduced economic loss; simultaneously upper bracket and lower carriage are provided with the battery chamber and come fixed electric core group, are provided with the installation department on the upper bracket and come fixed protection shield, have realized the location and the fixing of electric core group and protection shield, the equipment of the fire prevention battery package of being convenient for avoids electric core group and protection shield to rock in sealed intracavity, prevents to take place the short circuit and causes the fire, has improved the security performance of fire prevention battery package, also avoids electric core group and protection shield to rock the tone quality that produces the noise influence audio amplifier.

Drawings

Fig. 1 is a schematic structural view of a fireproof battery pack according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;

fig. 3 is a schematic view of a part of a fireproof battery pack according to an embodiment of the present invention;

fig. 4 is a schematic view of a part of a fireproof battery pack according to an embodiment of the present invention;

fig. 5 is a schematic structural view of the upper and lower brackets of fig. 2.

The reference numerals in the specification are as follows:

1. a fire-retardant support; 11. a protective cover;

12. an upper bracket; 121. a first accommodating chamber; 122. an installation part; 123. a first limiting part; 124. a first limit hole; 125. a threaded hole; 126. a notch; 127. a first fool-proof post; 128. a second fool-proof hole; 129. Clamping the matching holes;

13. a lower bracket; 131. a second accommodating chamber; 132. a second limiting part; 133. a second limiting hole; 134. a fool-proof reinforcing rib; 135. a first fool-proof hole; 136. a second fool-proof post; 137. a clamping part; 138. a limiting plate;

14. buckling; 15. a top plate; 16. a base plate;

2. a protection plate; 3. an output line;

4. a first electrode sheet; 41. a first connection portion; 42. a second connecting portion;

5. a second electrode sheet; 6. the electric core group; 7. an insulating plate; 8. a sleeve; 9. a buffer.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 5, the fireproof battery pack provided by the embodiment of the present invention includes a fireproof flame-retardant support 1, a protective plate 2, an output line 3, a first electrode plate 4, a second electrode plate 5 and a battery cell group 6; the fireproof flame-retardant support 1 comprises a protective cover 11, an upper support 12, a lower support 13, a top plate 15 and a bottom plate 16, wherein the upper support 12 covers the lower support 13, the top plate 15 is fixed at the top of the upper support 12, the bottom plate 16 is fixed at the bottom of the lower support 13, the protective cover 11 covers the outer surfaces of the upper support 12 and the lower support 13, the upper support 12, the lower support 13, the top plate 15 and the bottom plate 16 form a sealed cavity in a surrounding mode, and an electric core group 6, a first electrode plate 4, a second electrode plate 5 and a protective plate 2 are contained in the sealed cavity.

A first accommodating cavity 121 is formed in one end, close to the lower bracket 13, of the upper bracket 12, a second accommodating cavity 131 is formed in one end, close to the upper bracket 12, of the lower bracket 13, and the first accommodating cavity 121 and the second accommodating cavity 131 are communicated with each other to form a battery cavity for mounting the electric core pack 6; one end of the upper bracket 12 close to the top plate 15 is provided with an installation part 122, the protection plate 2 is fixed on one side of the installation part 122 deviating from the first accommodating cavity 121, the first electrode plate 4 is electrically connected with the first end of the protection plate 2 and the electric core group 6, and the second electrode plate 5 is electrically connected with the second end of the protection plate 2 and the electric core group 6.

The output line 3 is fixed on the fire-retardant support of fire prevention 1, and the one end of output line 3 is connected with protection shield 2 electricity, and the other end of output line 3 is worn out fire-retardant support of fire prevention 1 and is connected with outside electronic component.

The embodiment of the utility model provides a fireproof battery pack, compared with the prior art, upper bracket 12, lower carriage 13, roof 15 and bottom plate 16 enclose to close and form sealed chamber, and electric core group 6, first electrode piece 4, second electrode piece 5 and protection shield 2 hold in sealed chamber, just the utility model discloses fireproof battery pack adopts fire prevention fire-retardant support 1, and when the electronic component of fireproof battery pack inside broke down and started a fire, protection casing 11, upper bracket 12, lower carriage 13, roof 15 and bottom plate 16 formed a fire prevention barrier, can satisfy UL 94-V0's fire prevention grade requirement, make flame can only burn in sealed chamber, can not burn outside the fireproof battery pack, avoid damaging other structures outside the fireproof battery pack, reduce economic loss; meanwhile, the upper support 12 and the lower support 13 are provided with a battery cavity for fixing the electric core group 6, the upper support 12 is provided with an installation part 122 for fixing the protection board 2, the positioning and fixing of the electric core group 6 and the protection board 2 are realized, the fireproof battery pack is convenient to assemble, the electric core group 6 and the protection board 2 are prevented from shaking in the sealing cavity, the short circuit is prevented from causing fire, the safety performance of the fireproof battery pack is improved, and the electric core group 6 and the protection board 2 are also prevented from shaking to generate noise to influence the tone quality of the sound box.

Preferably, the top plate 15 is made of epoxy resin material, the bottom plate 16 is made of PC material, and the shield 11 is made of PC material.

In one embodiment, as shown in FIG. 3, the upper rack 12 and the lower rack 13 snap fit together. Simple structure, the installation and the dismantlement of being convenient for do benefit to installation electric core group 6.

Preferably, as shown in fig. 5, the lower frame 13 is provided with a plurality of engaging portions 137, the upper frame 12 is provided with engaging holes 129 at positions corresponding to the engaging portions 137, and the engaging portions 137 are engaged with the engaging holes 129.

In one embodiment, as shown in fig. 2 and 3, the fireproof flame-retardant bracket 1 further comprises a buckle 14, the buckle 14 is buckled with the upper bracket 12, the output wire 3 is fixed on the buckle 14, and one end of the output wire 3 penetrates out of the buckle 14 and is connected with an external electronic component. Compared with the existing battery pack with a patch seat as an output mode, the upper support 12, the lower support 13, the buckle 14, the top plate 15 and the bottom plate 16 enclose to form a sealed cavity, and the protective cover 11, the upper support 12, the buckle 14, the lower support 13, the top plate 15 and the bottom plate 16 form a fireproof barrier, so that the fireproof barrier of the fireproof battery pack can meet the requirements of UL 94-V0; simple structure, the equipment of the fire prevention battery package of being convenient for improves production efficiency, reduction in production cost.

In one embodiment, the catch 14 is injection molded onto the output cord 3. The positioning and fixing of the output line 3 are better realized, and the noise generated by the vibration of the output line 3 is avoided, so that the tone quality of the sound box is prevented from being influenced; make output line 3 to be connected with protection shield 2 through automatic soldering tin technology, improved the quality of fire prevention battery package, reduced the cost of labor.

In an embodiment, as shown in fig. 2 and fig. 5, the battery core pack 6 includes a plurality of battery cores, a first limiting portion 123 is disposed at one end of the first accommodating cavity 121 close to the mounting portion 122, a plurality of first limiting holes 124 isolated from each other are disposed on the first limiting portion 123, the first limiting holes 124 correspond to the battery cores one to one, a second limiting portion 132 is disposed at one end of the second accommodating cavity 131 far from the first accommodating cavity 121, a plurality of second limiting holes 133 isolated from each other are disposed on the second limiting portion 132, the second limiting holes 133 correspond to the battery cores one to one, one end of the battery core is located in the first limiting hole 124, and the other end of the battery core is located in the second limiting hole 133. Upper bracket 12 and lower carriage 13 parcel electric core group 6, single electric core is fixed in the cooperation of first spacing hole 124 and the spacing hole 133 of second, has further improved the stability of electric core group 6 installation, and the collision each other breaks down between each electric core when avoiding the fire prevention battery package to fall, improves the security performance of fire prevention battery package, and the anti ability of falling of reinforcing fire prevention battery package increases the reliability of fire prevention battery package structure.

The first end of each cell is electrically connected with the first electrode plate 4, and the second end of each cell is electrically connected with the second electrode plate 5.

Preferably, the cell group 6 is of a 2S4P structure, and the cells are 18650 cells.

In one embodiment, as shown in fig. 4, the inner wall of the upper bracket 12 protrudes inward to form a mounting portion 122, the mounting portion 122 is fixed to one end of the first limiting portion 123 close to the top plate 15, and the mounting portion 122 limits the battery cell from protruding from the first limiting hole 124. The battery core is limited, the battery core is prevented from falling out of the battery cavity when the fireproof battery pack falls, the falling resistance of the fireproof battery pack is enhanced, and the reliability of the structure of the fireproof battery pack is improved.

In one embodiment, as shown in fig. 5, the inner wall of the lower bracket 13 protrudes inward to form a limiting plate 138, the limiting plate 138 is located at one end of the second limiting portion 132 close to the bottom plate 16, and the limiting plate 138 limits the battery cell from protruding from the second limiting hole 133. The battery core is limited, the battery core is prevented from falling out of the battery cavity when the fireproof battery pack falls, the falling resistance of the fireproof battery pack is enhanced, and the reliability of the structure of the fireproof battery pack is improved.

In one embodiment, as shown in fig. 2, the fireproof battery pack further includes an insulating plate 7, the insulating plate 7 being disposed between the mounting part 122 and the protection plate 2; the first electrode sheet 4 includes a first connection portion 41 and a second connection portion 42 connected to the first connection portion 41, the first connection portion 41 is electrically connected to one end of the electric core pack 6 adjacent to the top plate 15, and the second connection portion 42 is electrically connected to the protection plate 2 through the insulation plate 7. Insulation board 7 keeps apart electric core group 6 and protection shield 2 for the first end of electric core group 6 is connected with protection shield 2 only through the second connecting portion 42 of first electrode slice 4, avoids electric core group 6 and protection shield 2 short circuit to cause the fire, improves the security performance of fireproof battery package.

Preferably, the insulating plate 7 is PC gummed paper.

In one embodiment, as shown in fig. 4, the mounting portion 122 is provided with a plurality of threaded holes 125, the plurality of threaded holes 125 are arranged in a staggered manner, and screws are screwed into the threaded holes 125 to fix the protection plate 2 on the mounting portion 122. Make protection shield 2 can fix on installation department 122 steadily, avoid protection shield 2 to rock the tone quality that influences the audio amplifier, a plurality of screw holes 125 are provided with in a wrong way and help protection shield 2 assembly prevent slow-witted and location, avoid protection shield 2 dress to cause the short circuit of fire prevention battery package after turning over, improve the security performance of fire prevention battery package.

Preferably, the protection plate 2 is a PCM protection plate.

In an embodiment, as shown in fig. 4, a notch 126 is disposed on a side of the first position-limiting portion 123 close to the mounting portion 122, and the notch 126 communicates with the two first position-limiting holes 124. Setting up breach 126 and being convenient for directly survey electric core temperature with plug-in components formula hard foot NTC, can detect electric core temperature better.

In an embodiment, as shown in fig. 2, the fireproof battery pack further includes a sleeve 8, the sleeve 8 covers the outer surface of the fireproof flame-retardant support 1, and the sleeve 8 is provided with a mounting hole for avoiding the output line 3. Make the overall structure of fire prevention battery package compacter, strengthened the leakproofness in sealed chamber, play the cushioning effect when the fire prevention battery package falls, strengthen the anti ability of falling of fire prevention battery package, increase the reliability of fire prevention battery package structure.

Preferably, the sleeve 8 is a PET sleeve.

In one embodiment, as shown in fig. 2, the fireproof battery pack further includes a buffer member 9, and the top end and the bottom end of the fireproof flame-retardant support 1 are respectively coated with the buffer member 9. The both ends of fire prevention battery package set up bolster 9, and the vibration that brings when can cushioning the high volume output of audio amplifier effectively prevents the noise production, also can play the cushioning effect when the fire prevention battery package falls, improves the anti ability of falling of reinforcing fire prevention battery package, increases the reliability of fire prevention battery package structure.

Preferably, the buffer 9 is E4308 foam.

In one embodiment, as shown in fig. 5, a first fool-proof post 127 protruding toward the lower bracket 13 is disposed on an end surface of the upper bracket 12 covering the lower bracket 13, a first fool-proof hole 135 is disposed at a position of the lower bracket 13 corresponding to the first fool-proof post 127, and the first fool-proof post 127 is inserted into the first fool-proof hole 135; a second fool-proof post 136 protruding toward the upper bracket 12 is arranged on one end surface of the lower bracket 13 covering the upper bracket 12, a second fool-proof hole 128 is arranged at a position of the upper bracket 12 corresponding to the second fool-proof post 136, and the second fool-proof post 136 is inserted into the second fool-proof hole 128. The assembling of upper bracket 12 and lower carriage 13 is helped to be fool-proof, the upper bracket 12 and the lower carriage 13 are prevented from being installed in a staggered mode, the anti-falling capacity of the fireproof battery pack is enhanced, and the reliability of the fireproof battery pack structure is improved.

In one embodiment, as shown in fig. 5, the lower bracket 13 is provided with a fool-proof rib 134 at an end thereof away from the upper bracket 12. The fool-proof reinforcing rib 134 plays a fool-proof role, and the lower support 13 is prevented from being placed reversely in the spot welding fixture.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A fireproof battery pack is characterized by comprising a fireproof flame-retardant support, a protective plate, an output line, a first electrode plate, a second electrode plate and an electric core group; the fireproof flame-retardant support comprises a protective cover, an upper support, a lower support, a top plate and a bottom plate, the upper support covers the lower support, the top plate is fixed at the top of the upper support, the bottom plate is fixed at the bottom of the lower support, the protective cover covers the outer surfaces of the upper support and the lower support, the upper support, the lower support, the top plate and the bottom plate form a sealed cavity in an enclosing mode, and the electric core group, the first electrode plate, the second electrode plate and the protective plate are contained in the sealed cavity;

2. The fireproof battery pack of claim 1, wherein the fireproof flame-retardant bracket further comprises a buckle, the buckle is clamped with the upper bracket, the output wire is fixed on the buckle, and one end of the output wire passes through the buckle and is connected with an external electronic component.

3. The fire-resistant battery pack of claim 2, wherein the clip is injection molded onto the output cord.

4. The fireproof battery pack according to claim 2, wherein the battery core pack comprises a plurality of battery cores, a first limiting portion is arranged at one end, close to the mounting portion, of the first accommodating cavity, a plurality of first limiting holes which are isolated from each other are formed in the first limiting portion, the first limiting holes correspond to the battery cores in a one-to-one manner, a second limiting portion is arranged at one end, away from the first accommodating cavity, of the second accommodating cavity, a plurality of second limiting holes which are isolated from each other are formed in the second limiting portion, the second limiting holes correspond to the battery cores in a one-to-one manner, one ends of the battery cores are located in the first limiting holes, and the other ends of the battery cores are located in the second limiting holes.

5. The fireproof battery pack according to claim 4, wherein a notch is formed in one side of the first limiting portion, which is close to the mounting portion, and the notch communicates with the two first limiting holes.

6. The fire-resistant battery pack according to claim 1, wherein the mounting portion is provided with a plurality of threaded holes, the plurality of threaded holes are arranged in a staggered manner, and screws are threadedly coupled with the threaded holes to fix the protection plate to the mounting portion.

7. The fire resistant battery pack of claim 1, further comprising an insulating plate disposed between the mounting portion and the protective plate; the first electrode plate comprises a first connecting part and a second connecting part connected to the first connecting part, the first connecting part is electrically connected with one end, close to the top plate, of the electrode core group, and the second connecting part penetrates through the insulating plate to be electrically connected with the protective plate.

8. The fire-resistant battery pack according to claim 1, further comprising a sleeve, wherein the sleeve covers an outer surface of the fire-resistant flame-retardant bracket, and a mounting hole for avoiding the output line is formed in the sleeve.

9. The fire-resistant battery pack according to claim 1, further comprising a buffer member, wherein the top and bottom ends of the fire-resistant flame-retardant support are respectively coated with the buffer member.

10. The fire-resistant battery pack according to claim 1, wherein a first fool-proof post protruding toward the lower bracket is provided on an end surface of the upper bracket covering the lower bracket, a first fool-proof hole is provided in a position of the lower bracket corresponding to the first fool-proof post, and the first fool-proof post is inserted into the first fool-proof hole; the lower bracket and the end face that the upper bracket lid closed are provided with to the convex second of upper bracket prevents slow-witted post, the upper bracket with the position that the second prevented slow-witted post corresponds is provided with the second and prevents slow-witted hole, the second prevents slow-witted post and inserts the second prevents slow-witted downthehole.