CN107068955B - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
CN107068955B
CN107068955B CN201710226455.9A CN201710226455A CN107068955B CN 107068955 B CN107068955 B CN 107068955B CN 201710226455 A CN201710226455 A CN 201710226455A CN 107068955 B CN107068955 B CN 107068955B
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CN
China
Prior art keywords
battery pack
battery
connecting plate
upper cover
packs
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.)
Active
Application number
CN201710226455.9A
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Chinese (zh)
Other versions
CN107068955A (en
Inventor
路伟康
吴阳
李波
刘鹏辉
高风祥
李彦良
张云峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
XINXIANG HEZON XINHUI VEHICLE Co.,Ltd.
Original Assignee
XINXIANG XINNENG ELECTRIC VEHICLE CO Ltd
Henan Lixiang Power Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by XINXIANG XINNENG ELECTRIC VEHICLE CO Ltd, Henan Lixiang Power Technology Co Ltd filed Critical XINXIANG XINNENG ELECTRIC VEHICLE CO Ltd
Priority to CN201710226455.9A priority Critical patent/CN107068955B/en
Publication of CN107068955A publication Critical patent/CN107068955A/en
Application granted granted Critical
Publication of CN107068955B publication Critical patent/CN107068955B/en
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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/502Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/572Means for preventing undesired use or discharge
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The present invention relates to a battery pack, including: the battery pack comprises a battery pack shell, a battery pack body and a battery pack body, wherein the battery pack shell comprises a battery pack accommodating cavity, a positive pole electric pile, a negative pole electric pile and a collecting plate; the battery pack consists of more than two groups of battery modules; the acquisition board connects a plurality of battery packs in parallel, the input end of the acquisition board is connected with the battery packs, and the output end of the acquisition board is connected with the positive pole electric piles and the negative pole electric piles; and a connection device fixing the plurality of battery packs. According to the battery pack, the capacity of the battery pack is set in a mode that the plurality of battery packs are connected in parallel through the acquisition board, the plurality of battery packs are fixed through the fixing devices among the single batteries, the insulating elastic devices are arranged among the plurality of battery packs, the fixing effect and the protection level are improved, the capacity of the battery pack can be freely set, the batteries are fixed more tightly, the protection standard is higher, and the maintenance is more convenient.

Description

Battery pack
Technical Field
The invention relates to the technical field of batteries, in particular to a battery pack.
Background
With the development of battery technology, batteries are also more and more widely used, for example, batteries are used in a large number in the field of mobile phones, notebook computers, electric vehicles and the like, and because of different use fields, the specification and model of a battery pack are required to be different, for the field of mobile phones, the capacity and the appearance of the battery pack are relatively small, for the field of notebook computers, the limitation on the appearance is involved, the battery pack needs to be designed into a special shape, and for the field of electric vehicles, the size is also large because of the large demand on the capacity.
The battery pack generally has a circuit for controlling abnormal operation environments such as overcharge, overdischarge, or overcurrent, the circuit mounted on the battery generally has an upper cover, and is assembled by screws, and the structure is complicated, and the assembled battery pack case is troublesome to disassemble, which is time-consuming and labor-consuming, the battery pack of the prior art generally has a fixed capacity, and the combination manner thereof is also fixed, and if the battery pack is damaged, all the battery packs need to be disassembled, which is inconvenient for free combination and maintenance, and the battery pack is also not strong in fixation, and is easily damaged.
Disclosure of Invention
The invention discloses a battery pack, which is used for enabling the capacity of the battery pack to be freely set, has the advantages of simple structure, convenience in use, tighter fixation among batteries, better protection standard, more convenience in maintenance and stable battery pack structure, can automatically and independently break when the current of a circuit is overlarge, can detect the self-discharge condition of a battery string, estimate the service life and the fault presentation time through a management system, reduce the circuit volatility during charging and discharging and protect the safety of a battery core.
The battery pack provided by the embodiment of the invention comprises a battery pack shell and a plurality of groups of battery packs, wherein the battery pack shell comprises an upper cover and a lower shell, the upper cover and the lower shell are cuboids, and the interiors of the upper cover and the lower shell are both rectangular hollow structures; the left end surface and the right end surface of the upper cover are respectively provided with a first groove, and the left end and the right end of the upper end surface of the upper cover are respectively provided with a positive electrode electric pile and a negative electrode electric pile; the lower end of the upper cover is provided with a plug-in connector, the upper end of the lower shell is provided with a lock catch, the plug-in connector is matched with the lock catch, and the upper cover is also provided with a collecting plate; the inner surface of the upper cover is provided with a rubber ring;
the battery pack comprises batteries, connecting plates and a PCB, wherein the connecting plates are provided with fixed through holes which are arranged in an array manner, conductive plates are arranged in the fixed through holes, the conductive plates in the fixed through holes in the same row are mutually and electrically connected, an extending part extends from one end of each conductive plate and is attached to the same side surface of the connecting plate, the batteries installed in the fixed through holes of the same connecting plate have the same polarity and are connected in parallel through the conductive plates, one side of the PCB is provided with electrode contacts corresponding to the extending part on the side surface of the connecting plate, the electrode contacts are connected through a lead, and a fuse is arranged on the lead at the position between every two adjacent electrode contacts; the battery pack leads out the positive electrode and the negative electrode through two leading-out polar plates respectively; the collecting plate is connected with the plurality of battery packs in parallel, the input positive pole and the input negative pole of the collecting plate are respectively and electrically connected with the leading-out polar plates of the positive pole and the negative pole of the leading-out battery pack, and the output positive pole and the output negative pole of the collecting plate are respectively and electrically connected with the positive pole electric pile and the negative pole electric pile of the battery pack shell.
Preferably, an insulation interval is arranged between the battery packs; the insulating space isolates the single battery pack into an independent electric space, and the insulating space is made of flexible materials.
Preferably, the connecting plate is made of polypropylene, polyethylene or polyvinyl chloride.
Preferably, the extending part of the conducting strip is circular, and the attaching position of the connecting plate corresponding to the extending part is provided with a second groove and a concave structure corresponding to the connecting line between the conducting strips.
Preferably, the two leading-out polar plates are arranged on the side face of the battery pack, a current detection device and a protector are further arranged between the two PCB plates, the current detection device is a non-contact current sensor, and the protector is a parallel capacitor.
Preferably, the battery pack case is made of an insulating material.
Preferably, the group battery outer fringe is provided with connecting device, and when fixed, set up resilient means between the adjacent group battery, when connecting device is fixed to be tightened up, resilient means produces and warp, improves fixed effect, and connecting device fixes in the cavity of battery package shell after connecting as an organic whole a plurality of group batteries, connect integrative group battery and the space part packing rubber pad of battery package shell.
Preferably, the battery pack is 3.
Compared with the prior art, the invention has the following advantages:
the battery pack of the invention sets the output voltage of the battery, sets the capacity of the battery pack in a mode of connecting a plurality of battery packs in parallel through the acquisition board, and between single batteries, the plurality of battery packs are all fixed through the fixing device, and the insulating elastic devices are arranged among the battery packs, so that the fixing effect and the protection level are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below to the drawings used in the description of the embodiments or the prior art.
Fig. 1 is a schematic structural view of one embodiment of a battery pack of the present invention;
fig. 2 is a schematic view of a battery pack case structure of one embodiment of a battery pack of the present invention;
fig. 3 is a schematic view of the structure of the upper cover of the battery pack case according to an embodiment of the battery pack of the present invention;
fig. 4 is a schematic view of a lower case structure of a battery pack case according to an embodiment of the battery pack of the present invention;
fig. 5 is a schematic structural view of a connection plate of one embodiment of a battery pack of the present invention;
fig. 6 is a schematic cross-sectional view at a-a in fig. 5 of one embodiment of a battery pack according to the present invention;
fig. 7 is a schematic view of the structure of a conductive sheet of one embodiment of a battery pack of the present invention;
fig. 8 is a schematic cross-sectional view of a PCB board of one embodiment of a battery pack of the present invention;
fig. 9 is a schematic view of a battery pack structure of one embodiment of a battery pack of the present invention;
FIG. 10 is an enlarged schematic view at A in FIG. 9 of one embodiment of a battery pack of the present invention;
in the figure: the battery pack comprises a battery pack shell-101, an upper cover-102, a lower shell-103, a positive electrode electric pile-104, a negative electrode electric pile-105, a collecting plate-106, a first groove-107, a plug-in connector-108, a lock catch-109, a rubber ring-110, a battery pack-201, a battery-202, a connecting plate-203, a PCB plate-204, a fixing through hole-205, a conducting strip-206, an extension-207, an electrode contact-208, a lead-209, a fuse-210, a second groove-211, an inner concave structure-212, a connecting device-213, a lead-out pole plate-214 and a non-contact type current detection device-215.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 10, the battery pack includes:
the battery pack comprises a battery pack shell 101, wherein the battery pack shell 101 is made of SMC (sheet molding compound), and comprises an upper cover 102 with a rectangular cuboid hollow structure and a lower shell 103 with a rectangular cuboid hollow structure; the left end face and the right end face of the upper cover 102 are both provided with a first groove 107, the left end and the right end of the upper end face of the upper cover 102 are respectively provided with a positive pole electric pile 104 and a negative pole electric pile 105, and the lower end face of the upper cover 102 is provided with a collecting plate 106; the lower end of the upper cover 102 is provided with a plug 108, the upper end of the lower shell 103 is provided with a lock catch 109, and the plug is matched with the lock catch; a rubber ring 110 is arranged in the inner surface of the upper cover 102;
the battery pack 201 comprises three groups of batteries 201, wherein each group of batteries 201 comprises a battery 202, a polypropylene connecting plate 203 for fixing the battery 202 and a PCB 204 for electrically connecting the batteries 202, fixing through holes 205 which are arranged in an array mode and used for fixing the batteries 202 are formed in the connecting plate 203, a circular conducting strip 206 is arranged in the middle of each fixing through hole 205, the conducting strips 206 which are positioned in the same row in each fixing through hole 205 are electrically connected with each other, an extending part 207 extends from one end of each fixing through hole and is attached to the side surface of the connecting plate 203, and a second groove 211 and a concave structure 212 which is adapted to a connecting line between the corresponding conducting strips 206; the same connecting plate 203 fixes the same electrode of the two batteries 202 in the through hole 205, and are connected in parallel through a conducting strip 206, the battery 202 electrically connects the positive and negative poles of the battery 202 through four connecting plates 203 to form a battery pack 201, one side of the PCB 204 is provided with an electrode contact 208 corresponding to the side extension of the connecting plate 203, the circuit between the battery packs 201 can be connected in parallel through the electrode contacts 208, the electrode contacts 208 are connected through the wires 209, the fuses 210 for protecting the circuit are arranged at the positions of the wires 209 between the two electrode contacts 208, the battery packs 201 respectively and electrically connect the positive electrode and the negative electrode with the input positive electrode and the input negative electrode of the acquisition board 106 through the two lead-out electrode plates 214 arranged on the side surfaces, the output positive electrode and the output negative electrode of the acquisition board 106 are respectively connected with the positive electrode electric pile 104 and the negative electrode electric pile 105 of the battery pack shell 101, and a non-contact current detection device 215 and a parallel capacitor (not shown in the figure) are also arranged between the same group of lead-out electrode plates; the connecting device 213 is fixed at the outer edge of the battery pack 201 to fix the 3 battery packs 201, when the 3 battery packs 201 are fixed, an elastic device (not shown in the figure) is arranged between the adjacent battery packs 201, and when the connecting device 213 is fixed and tightened, the elastic device deforms to improve the fixing effect, so that the battery packs are in a compact integrated structure;
the acquisition board 106 is fixedly arranged on the lower end face of the upper cover 102 of the battery pack shell 101, a plurality of battery packs 201 are connected in parallel, and the parallel connection number of the battery packs 201 is set according to the requirement of external electric equipment;
the elastic device is arranged around the outer edge of the adjacent battery 201 group, and when the connection device 213 is fixed and tightened, the elastic device is deformed and then is flush with the front surface of the battery pack shell 101 without a groove;
after the plurality of battery packs 201 are connected into a whole by the connecting device 213, the battery packs are fixed in the cavity of the battery pack case 101, and a rubber pad is filled in a gap between the battery pack 201 and the battery pack case 101.
The above detailed description of the battery pack provided by the present invention is provided, and the principle and the implementation of the present invention are explained by applying specific examples, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (9)

1. The utility model provides a battery package, includes battery package shell and a plurality of group battery, its characterized in that:
the battery pack shell comprises an upper cover and a lower shell, wherein the upper cover and the lower shell are cuboids and are both rectangular hollow structures; the left end surface and the right end surface of the upper cover are respectively provided with a first groove, and the left end and the right end of the upper end surface of the upper cover are respectively provided with a positive electrode electric pile and a negative electrode electric pile; the lower end of the upper cover is provided with a plug-in connector, the upper end of the lower shell is provided with a lock catch, the plug-in connector is matched with the lock catch, and the upper cover is also provided with a collecting plate; the inner surface of the upper cover is provided with a rubber ring;
the battery pack comprises batteries, a connecting plate and a PCB, wherein the connecting plate is provided with fixed through holes which are arranged in an array manner, the fixed through holes are internally provided with conducting strips, the conducting strips in the fixed through holes in the same row are mutually and electrically connected, an extending part extends from one end of each conducting strip and is attached to the same side face of the connecting plate, the polarity of the batteries installed in the fixed through holes at the same side of the same connecting plate is the same, the polarity of the two batteries arranged in each fixed through hole in the same connecting plate is the same and is connected in parallel through the conducting strips, one side of the PCB is provided with an electrode contact corresponding to the extending part on the side face of the connecting plate, the electrode contacts are connected through a lead, and; the battery pack leads out the positive electrode and the negative electrode through two leading-out polar plates respectively; the collecting plate is connected with the plurality of battery packs in parallel, the input positive pole and the input negative pole of the collecting plate are respectively and electrically connected with the leading-out polar plates of the positive pole and the negative pole of the leading-out battery pack, and the output positive pole and the output negative pole of the collecting plate are respectively and electrically connected with the positive pole electric pile and the negative pole electric pile of the battery pack shell.
2. The battery pack according to claim 1, wherein an insulating space is provided between the battery packs.
3. The battery pack of claim 1, wherein the connecting plate is made of polypropylene, polyethylene or polyvinyl chloride.
4. The battery pack of claim 1, wherein the extension is circular, the connecting plate has a second groove at a position corresponding to the extension, and the connecting plate has a concave structure adapted to the connecting wire between the corresponding conductive strips.
5. The battery pack of claim 1, wherein the battery pack housing is made of an insulating material.
6. The battery pack of claim 1, wherein the two extraction plates are arranged on the side of the battery pack, and a current detection device is further arranged between the two PCB plates and is a non-contact current sensor.
7. A battery pack, as recited in claim 1, wherein the battery packs are provided with attachment means at their outer edges and resilient means are provided between adjacent battery packs.
8. The battery pack according to claim 1, wherein the battery packs are 3 packs.
9. The battery pack of claim 1, wherein a gap between the battery pack and the battery pack housing is filled with a rubber gasket.
CN201710226455.9A 2017-04-09 2017-04-09 Battery pack Active CN107068955B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710226455.9A CN107068955B (en) 2017-04-09 2017-04-09 Battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710226455.9A CN107068955B (en) 2017-04-09 2017-04-09 Battery pack

Publications (2)

Publication Number Publication Date
CN107068955A CN107068955A (en) 2017-08-18
CN107068955B true CN107068955B (en) 2019-12-27

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Family Applications (1)

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Country Link
CN (1) CN107068955B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104124405A (en) * 2013-04-29 2014-10-29 株式会社Lg化学 Battery module aggregate included in battery pack for vehicle
CN105489799A (en) * 2015-11-24 2016-04-13 山东精工电子科技有限公司 Lithium battery pack free from welding, easy to maintain and capable of being connected in parallel
CN205211881U (en) * 2015-12-02 2016-05-04 郑州比克新能源汽车有限公司 Automotive power battery module voltage sample device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104124405A (en) * 2013-04-29 2014-10-29 株式会社Lg化学 Battery module aggregate included in battery pack for vehicle
CN105489799A (en) * 2015-11-24 2016-04-13 山东精工电子科技有限公司 Lithium battery pack free from welding, easy to maintain and capable of being connected in parallel
CN205211881U (en) * 2015-12-02 2016-05-04 郑州比克新能源汽车有限公司 Automotive power battery module voltage sample device

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Publication number Publication date
CN107068955A (en) 2017-08-18

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Effective date of registration: 20210623

Address after: No. 111, Deyuan Road, high tech Development Zone, Xinxiang City, Henan Province

Patentee after: XINXIANG HEZON XINHUI VEHICLE Co.,Ltd.

Address before: No. 111, Deyuan Road, high tech Development Zone, Xinxiang City, Henan Province

Patentee before: HENAN LIXIANG POWER TECHNOLOGY Co.,Ltd.

Patentee before: XINXIANG XINNENG ELECTRIC VEHICLE Co.,Ltd.