CN206040723U

CN206040723U - Lithium battery pack

Info

Publication number: CN206040723U
Application number: CN201620772402.8U
Authority: CN
Inventors: 王瑞平; 王伟; 王永
Original assignee: Suzhou Innov-Energy Co Ltd
Current assignee: Suzhou Innov-Energy Co Ltd
Priority date: 2016-07-21
Filing date: 2016-07-21
Publication date: 2017-03-22
Anticipated expiration: 2026-07-21

Abstract

The utility model relates to a lithium battery pack, including upper cover, lower cover and group battery body, fixed connection can be dismantled to upper cover and lower cover, and the group battery body is installed in the lower cover, the group battery body includes a plurality of separators, fastener and PCBA, and the top and the PCBA of all separators are connected, forms the parking space between two arbitrary adjacent separators, the fastener is installed on PCBA. The beneficial effects of the utility model are that: steadily fix at the group battery electric core originally internal through separator and fastener to combine upper cover and lower cover, realized that the omnidirectional is fixed, guaranteed the overall structure and the electric core relative position's of group battery body stability, guarantee the safety of circuit board electrical property, effectively avoid the vibrations extrusion to wait and lead to electric core safety to appear unusually.

Description

Lithium battery group

Technical field

This utility model is related to accumulator group charger technical field, more particularly to lithium battery group.

Background technology

The electrochemistry of lithium battery, electrically and architectural characteristic particularity, cell stack designs need to consider overall structure and set The reasonability of meter, beeline string and connect, low internal resistance and safety.However, current light-weight electric slide plate set of cells knot Structure is only to be connected by nickel plating steel disc, wire with 18650 core struetures, and polyvinyl chloride heat shrinkable film fixed structure, every From insulation using modes such as Semen avenae nudae paper, battery pack system is fixed and is only fixed with fettering parcel mode, is so formed set of cells and is produced The intensity of product fastness and the protection of ectosome insulation system etc. does not reach security protection requirement, and system end can not detect battery temperature , there is larger potential safety hazard in degree.

PCBA, Printed Circuit BoardAssembly, are to say PCB hollow plates through SMT upper parts, then are inserted through DIP The whole processing procedure of part, abbreviation PCBA.Wherein PCB, Printed Circuit Board, printed circuit board (PCB), also known as printed circuit Plate, printed substrate is important electronic unit, is the supporter of electronic component, is the offer of electronic devices and components connection Person.

UL is Underwriters Laboratories to the electromechanical safety assurance mark for including that civil electric appliance class product is issued.

CE marks are safety approval mark rather than up-to-standard mark, are to constitute Europe instruction core " major requirement ".

CB systems (the IEC systems of electric product conformity testing and certification) are IECEE running-individual international architectures, The each certification authorities of member state of IECEE are tested to electric product security performance based on IEC standard, and its test result is CB Test report and CB test certificates obtain the system of mutual accreditation in each member states of IECEE.Purpose is to reduce due to necessary The International trade practices for meeting country variant certification or approval criterion and producing.IECEE is International Electrotechnical Commission's electric product Conformity testing and the abbreviation of qualification organization.

The classification of waterproof of IPX4 is that 4 preventing splashs are splashed without injurious effects by the fine grinding of any direction.

Utility model content

This utility model provides lithium battery group, and battery core is stably fixed at the set of cells by separator and securing member This in vivo, and combines upper lid and lower cover, realizes omnibearing fixation, it is ensured that the overall structure and battery core of battery pack body Relative position is stablized, it is ensured that wiring board electrical safety, and being prevented effectively from vibrations extruding etc. causes battery core security exception to occur.

The technical scheme adopted by this utility model for：

Lithium battery group, including upper lid, lower cover and battery pack body, the upper lid and the lower cover are detachably fixed connection, The battery pack body is arranged in the lower cover；

The battery pack body includes securing member, PCBA and multiple separators, the top of all of separator and institute PCBA connections are stated, between the adjacent separator of any two, parking space is formed；The securing member is on the PCBA.

Further, the battery pack body also includes multiple battery cores, and it is empty that a part of battery core is fixed on the storage In, and fixed by the keeper being arranged on the separator, battery core described in another part is fixed in the securing member, The all of battery core is sequentially connected in series.

Further, any two be connected the battery core be welded to connect by nickel sheet, all of battery core with it is described PCBA is welded to connect by the nickel sheet.

Further, all of separator spaced set, between the adjacent separator of any two away from Match from the length with the battery core；

The setting parallel with the length of the PCBA or width of all of separator；

The length of the securing member is matched with the length of the battery core, and the width of the securing member is the battery core diameter N times, N is positive integer；

The all of battery core is arranged in a row or/and in column.

Further, the material of the separator is plastics.

Further, battery pack body also includes temperature controller, and the temperature controller is arranged on the PCBA.

Further, the first line winder and the second line winder, first line winder and institute is provided with the top of the upper lid State the second line winder to be symmetrical arranged with the axis of the upper lid as axis of symmetry；

The inside of the upper lid is provided with multiple first fixtures, and all of first fixture is arranged into a rectangular array.

Further, multiple second fixtures are provided with the lower cover, the rectangular array of all of second fixture Arrangement, all of second fixture are used for fixing the battery core；

The 3rd fixture is provided between adjacent second fixture of any two row.

Further, second fixture is arc, the width of second fixture and the external diameter phase of the battery core Matching.

Further, the upper lid and the lower cover are bolted and/or snap connection；

The junction of the upper lid and the lower cover is provided with sealing member, and the sealing member is arranged on described by connector On lid or the/lower lid；

The junction of the upper lid and the lower cover is additionally provided with through hole, and one end of the temperature controller passes through the through hole It is fixed on the PCBA.

The beneficial effects of the utility model：

1st, battery core is stably fixed in battery pack body by separator and securing member, and combines upper lid and lower cover, it is real Omnibearing fixation is showed, it is ensured that the overall structure of battery pack body and stablizing for battery core relative position, it is ensured that wiring board Electrical safety, being prevented effectively from vibrations extruding etc. causes battery core security exception to occur.

2nd, a part of battery core is fixed in parking space, and is fixed by the keeper being arranged on separator, another portion Point battery core is fixed in securing member, effectively prevents battery core downward shift, isolation battery core and PCBA, to prevent from leading because colliding, falling Send a telegraph core and short circuit phenomenon occur with battery core, battery core and PCBA；

The battery core that any two is connected is welded to connect by nickel sheet, without using wire, all of battery core to lead to PCBA Cross nickel sheet to be welded to connect, the internal resistance of set of cells is greatly lowered, reduces interiors of products power consumption and reduces temperature rise, and strengthen set of cells Protection system signals collecting performance, so that battery protection system more effectively controls to manage set of cells operation.

3rd, the material of separator is plastics, improves intensity, support effect and the insulating properties of separator.

4th, temperature controller is arranged on PCBA, can monitor the temperature of battery core in time, effectively prevent battery core and battery core, Other safety problems caused by short-circuit foreign body causes between battery core and PCBA, while the reserved temperature signal line of PCBA design outlet methods Systems scan battery temperature is provided.

5th, the first line winder and the second line winder is provided with the top of upper lid, be easy to manage line, neat appearance；Inside is provided with first Fixture is used for self-contained battery group body, it is ensured that its structural integrity.

6th, the second fixture of multiple arcs is provided with lower cover, is provided with the 3rd solid between the second adjacent fixture of any two row Determine part, bayonet socket and the battery core of the second fixture of arc combine closely to fix battery core, increase intensity right with knot.

7th, upper lid and lower cover are bolted and the mode that snaps connection is fixed, and the junction of upper lid and lower cover is provided with close Sealing and connector, improve integrally-built steadiness and reach more than classification of waterproof IPX4.

8th, this utility model carrys out the structure of design science with the electrochemistry and electrical characteristic and architectural feature of 18650 battery cores Layout, perfect support fix guard space spacing and shell is fixed mode, to reduce and prevent battery core by external force When extruding, collision, the situation appearance that is short-circuited between possible battery core string loop, this structure is caused to greatly reduce scooter client Hold because abusing the potential safety hazard produced by battery bag, and the battery set product UL, CE and the CB that can reach and IPX4 with Upper class requirement.

Description of the drawings

Fig. 1 is the explosive view of one embodiment of this utility model；

Fig. 2 is the structural representation of one embodiment of lid on this utility model；

Fig. 3 is the structural representation of one embodiment of this utility model lower cover.

Wherein：1. lid on, 11. first line winders, 12. second line winders, 13. first fixtures, 2. lower cover, 21. second Fixture, 3. 22. the 3rd fixtures, battery pack body, 31. separators, 32. securing members, 33.PCBA, 34. battery cores, 341. nickel Piece, 4. 35. temperature controllers, sealing member, 5. through hole.

Specific embodiment

For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with of the present utility model attached Figure, provides the description of specific embodiment, but not as to any restriction of the present utility model.

Referring to Fig. 1 to Fig. 3, lithium battery group, including upper lid 1, lower cover 2 and battery pack body 3, upper lid 1 and lower cover 2 are detachable It is fixedly connected, battery pack body 3 is arranged in lower cover 2；

Battery pack body 3 includes multiple separators 31, securing member 32 and PCBA33, and all of separator 31 is vertically arranged simultaneously In the lower cover 2, the top of all of separator 31 is connected with PCBA33, between the adjacent separator 31 of any two Form parking space；Securing member 32 is on PCBA33.

The material of separator 31 is plastics, and the quantity of separator 31 is three, and three 31 spaced sets of separator are constituted Two parking spaces, all of separator 31 setting parallel with the length of PCBA33 or width, preferably all of isolation The setting parallel with the width of PCBA33 of part 31；Length phase of the distance between the adjacent separator 31 of any two with battery core 34 Matching；

The length of securing member 32 is matched with the length of battery core 34, and the width of securing member 32 is N times of 34 diameter of battery core, N For positive integer, it is preferable that four times for 34 diameter of battery core of the width of securing member 32.

The present embodiment passes through separator 31 and securing member is stably fixed at battery core 34 in the battery pack body 3, and ties Close lid 1 and lower cover 2, realizes omnibearing fixation, it is ensured that 34 relative position of the overall structure of battery pack body 3 and battery core That what is put stablizes, it is ensured that the electrical safety of wiring board, and being prevented effectively from vibrations extruding etc. causes 34 security exception of battery core to occur.

Wherein, battery pack body 3 also includes multiple battery cores 34, and a part of battery core 34 is fixed in parking space, and is passed through The keeper being arranged on separator 31 is fixed, and another part battery core 34 is fixed in securing member 32, all of battery core 34 It is sequentially connected in series, the battery core 34 that any two is connected is welded to connect by nickel sheet 341, and all of battery core 34 is passed through with PCBA33 Nickel sheet 341 is welded to connect.

All of battery core 34 is arranged in a row or/and in column, it is preferable that arrange eight battery cores 34 in each parking space, Eight row arrangements of 34 one-tenth of battery core, two row four；Four battery cores 34 are set in securing member 32.Battery core 34 is 18650 battery cores.

Wherein, battery pack body 3 also includes temperature controller 35, and temperature controller 35 is arranged on PCBA33, temperature control The probe of device processed 35 is arranged in battery core 34, can monitor the temperature of battery core 34 in time, effectively prevent battery core 34 and battery core 34, Other safety problems caused by short-circuit foreign body causes between battery core 34 and PCBA33, while the reserved temperature of PCBA33 design outlet methods Holding wire provides systems scan battery temperature.

Referring to Fig. 2, the top of upper lid 1 is provided with the first line winder 11 and the second line winder 12, the first line winder 11 and second The axis of more than 12 lid 1 of line winder is symmetrical arranged for axis of symmetry；

The inside of upper lid 1 is provided with multiple first fixtures 13, and all of first fixture 13 is arranged into a rectangular array.

Referring to Fig. 3, in lower cover 2, multiple second fixtures 21 are provided with, all of second fixture 21 is arranged into a rectangular array； The 3rd fixture 22 is provided between the adjacent fixture of any two row.

Second fixture 21 is arc, and width and the external diameter of battery core 34 of the second fixture 21 match.

Pass through to snap connection referring to the surrounding of Fig. 1, upper lid 1 and lower cover 2, four corners of upper lid 1 and lower cover 2 pass through spiral shell Tether and connect；

The junction of upper lid 1 and lower cover 2 is provided with sealing member 4, and sealing member 4 is arranged on upper lid 1 or/lower cover 2 by connector On；The junction of upper lid 1 and lower cover 2 is additionally provided with through hole 5, and one end of temperature controller 35 is fixed on PCBA33 through through hole 5. Connector is LN-2250 type glue.

This utility model carrys out the structure cloth of design science with the electrochemistry and electrical characteristic and architectural feature of 18650 battery cores Guard space spacing is fixed by office, perfect support and shell is fixed mode, to reduce and prevent battery core 34 by external force Extruding, collision when, cause possible battery core 34 go here and there and loop between be short-circuited situation appearance, this structure greatly reduce scooter visitor Family end is because abusing the potential safety hazard produced by battery bag, and the battery set product UL, CE and the CB that can reach and IPX4 Ratings above is required.

This utility model is not limited to above-mentioned preferred forms, and those skilled in the art are under enlightenment of the present utility model Other various forms of products can all be drawn, however, make any change in its shape or structure, it is every with the application Technical scheme as same or like, all falls within protection domain of the present utility model.

Claims

1. lithium battery group, it is characterised in that：Including upper lid (1), lower cover (2) and battery pack body (3), upper lid (1) and institute State lower cover (2) and be detachably fixed connection, described battery pack body (3) are arranged in the lower cover (2)；

Described battery pack body (3) include securing member (32), PCBA (33) and multiple separators (31), all of separator (31) top is connected with the PCBA (33), forms parking space between the adjacent separator (31) of any two；Institute State securing member (32) to be arranged on the PCBA (33).

2. lithium battery group according to claim 1, it is characterised in that：Battery pack body (3) also include multiple battery cores (34), a part of the battery core (34) are fixed in the parking space, and by being arranged on determining on the separator (31) Position part is fixed, and battery core described in another part (34) is fixed in the securing member (32), and all of battery core (34) go here and there successively Connection connection.

3. lithium battery group according to claim 2, it is characterised in that：The battery core (34) that any two is connected passes through nickel Piece (341) is welded to connect, and all of battery core (34) are welded to connect by the nickel sheet (341) with the PCBA (33).

4. lithium battery group according to claim 3, it is characterised in that：All of the separator (31) spaced set, The distance between adjacent described separator (31) of any two is matched with the length of the battery core (34)；

All of the separator (31) setting parallel with the length of the PCBA (33) or width；

The length of securing member (32) is matched with the length of the battery core (34), and the width of securing member (32) is described N times of battery core (34) diameter, N is positive integer；

All of the battery core (34) arrange in a row or/and in column.

5. lithium battery group according to claim 4, it is characterised in that：The material of separator (31) is plastics.

6. lithium battery group according to claim 1, it is characterised in that：Battery pack body (3) also includes temperature controller (35), temperature controller (35) are arranged on the PCBA (33).

7. lithium battery group according to claim 1, it is characterised in that：The first line winder is provided with the top of upper lid (1) (11) and the second line winder (12), the first line winder (11) and second line winder (12) are with upper lid (1) Axis is symmetrical arranged for axis of symmetry；

The inside of upper lid (1) is provided with multiple first fixture (13), all of first fixture (13) rectangular battle array Row arrangement.

8. lithium battery group according to claim 2, it is characterised in that：Multiple second fixtures are provided with lower cover (2) (21), all of second fixture (21) are arranged into a rectangular array, and all of described second fixture (21) are used for fixing Battery core (34).

9. lithium battery group according to claim 8, it is characterised in that：Described second fixture (21) are arc, described the The width of two fixtures (21) is matched with the external diameter of the battery core (34)；

Any two row are provided with the 3rd fixture (22) between adjacent the second fixture (21).

10. lithium battery group according to claim 6, it is characterised in that：Upper lid (1) and the lower cover (2) pass through spiral shell Tether and connect and/or snap connection；

The junction of upper lid (1) and the lower cover (2) is provided with sealing member (4), and sealing member (4) are arranged by connector On described on lid (1) or/lower cover (2)；

The junction of upper lid (1) and the lower cover (2) is additionally provided with through hole (5), and the one end of temperature controller (35) is worn Cross the through hole (5) to be fixed on the PCBA (33).