CN113193284A - Battery cell assembling structure and electric bicycle - Google Patents
Battery cell assembling structure and electric bicycle Download PDFInfo
- Publication number
- CN113193284A CN113193284A CN202110462204.7A CN202110462204A CN113193284A CN 113193284 A CN113193284 A CN 113193284A CN 202110462204 A CN202110462204 A CN 202110462204A CN 113193284 A CN113193284 A CN 113193284A
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- Prior art keywords
- battery cell
- electric
- battery
- steel pipe
- electric bicycle
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Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 15
- 229910052744 lithium Inorganic materials 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 5
- 239000003292 glue Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J43/00—Arrangements of batteries
- B62J43/20—Arrangements of batteries characterised by the mounting
- B62J43/28—Arrangements of batteries characterised by the mounting hidden within the cycle frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J43/00—Arrangements of batteries
- B62J43/10—Arrangements of batteries for propulsion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The application provides a battery cell package assembly and electric bicycle relates to battery technical field, and wherein, battery cell package assembly includes: the electric core group is arranged in a body supporting steel pipe of the electric bicycle; the battery core group comprises a plurality of battery cores which are connected in series; the electric quantity of the electric cores connected in series meets the electric quantity requirement of the electric bicycle. The battery core assembly structure in this application is installed in electric bicycle's automobile body support steel pipe, can reduce the physical space that electric bicycle was taken to electric core to improve the radiating effect of electric core, improve user's vehicle and use and experience.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery cell assembling structure and an electric bicycle.
Background
In the market of electric bicycles in China, the annual sales volume exceeds 3000 ten thousands, and the electric bicycle is an indispensable tool for family transportation. The battery is the core power source of the electric bicycle. Currently, lead-acid batteries dominate the market in terms of their high cost performance. However, according to research of starting point research (SPIR), the market penetration rate of lithium electric bicycles is over 18% by 2018, the annual production and sales volume is over 700 thousands of bicycles, and the year-on-year growth is over 25%. On the trends that the lithium battery technology is continuously developed and advanced and the cost is reduced year by year, lead-acid electric bicycles on the market in two or three years in the future are necessarily gradually replaced by lithium electric bicycles.
Most of current lithium cell all passes through series connection and parallelly connected with various cylinder electricity core, make the wholeness ability satisfy the vehicle demand, install on the bicycle with the form of battery package through whole packing, generally all install below the running-board or below the saddle, all need occupy a fixed physical space, increase certain the degree of difficulty of arranging for the electric bicycle that originally the space is just few, and simultaneously, to the arranging of other spare parts (like controller etc.) and cause certain limitation, especially the battery is placed under the saddle, almost not have any storing space, to the user, this is very inconvenient, in addition because the battery all concentrates on in a package, also be a challenge to the heat dissipation of battery.
Disclosure of Invention
An object of this application is to provide an electricity core package assembly and electric bicycle, and electricity core package assembly installs in electric bicycle's automobile body supports the steel pipe, can reduce electric core and occupy electric bicycle's physical space to improve the radiating effect of electric core, improve user's vehicle and use and experience.
In a first aspect, an embodiment of the present application provides a battery cell assembly structure, where the battery cell assembly structure includes: the electric core group is arranged in a body supporting steel pipe of the electric bicycle; the battery core group comprises a plurality of battery cores which are connected in series; the electric quantity of the electric cores connected in series meets the electric quantity requirement of the electric bicycle.
Further, a clamping groove connection mode is set between the two adjacent electric cores connected in series.
Further, the two adjacent cells connected in series include a first cell and a second cell; the negative pole of first electric core is provided with the recess, and the positive pole of second electric core is provided with the protruding piece that coincide with the recess.
Further, the positive electrode and the negative electrode of the two adjacent electric cores connected in series are fixedly connected in a welding mode.
Furthermore, a detection line is led out from the joint of the positive electrode and the negative electrode of each electric core in the electric core group and the positive electrode and the negative electrode of the electric core group; a protective adhesive layer is arranged outside the electric core group leading out the detection lines; and a collecting line of a plurality of detection lines is led out from one sealing of the vehicle body supporting steel pipe to the BMS circuit.
Furthermore, an insulating glue is arranged between the vehicle body supporting steel pipe and the protective glue layer.
Furthermore, above-mentioned electric bicycle's automobile body supports the steel pipe and is two, sets up a electric core group in every automobile body supports the steel pipe, and series connection between two electric core groups.
Further, the battery cell is a lithium battery.
Further, above-mentioned lithium cell is cylindrical, and the diameter of lithium cell and the diameter phase-match of automobile body support steel pipe.
In a second aspect, an embodiment of the present application further provides an electric bicycle, where the electric bicycle includes a bicycle body and the battery cell assembling structure according to the first aspect; the battery cell assembling structure is arranged in a vehicle body supporting steel pipe of the vehicle body.
In the electric core package assembly and electric bicycle that this application embodiment provided, electric core package assembly includes: the electric core group is arranged in a body supporting steel pipe of the electric bicycle; the battery core group comprises a plurality of battery cores which are connected in series; the electric quantity of the electric cores connected in series meets the electric quantity requirement of the electric bicycle. Because electric core package assembly installs in electric bicycle's automobile body support steel pipe, can reduce electric core and occupy electric bicycle's physical space to improve the radiating effect of electric core, when satisfying electric bicycle electric quantity demand, improve user's vehicle and use and experience.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is an installation schematic diagram of a battery cell assembly structure provided in an embodiment of the present application;
fig. 2 is a schematic diagram illustrating a connection manner of positive and negative electrodes of a battery cell according to an embodiment of the present application;
fig. 3 is a schematic diagram of a protection circuit connection according to an embodiment of the present application;
fig. 4 is a sectional view of an installation of a battery cell assembly structure according to an embodiment of the present application.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present application. 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 application.
In the current electric bicycle, most of lithium batteries are connected in series and in parallel by various cylindrical battery cores, and then are integrally packaged to be arranged under a pedal plate or a saddle of a vehicle in a battery pack mode. On one hand, the device occupies certain physical space, causes certain limitation to the arrangement of other parts (such as a controller and the like), and reduces the storage space available for users; on the other hand, since the batteries are concentrated in one battery pack, the heat dissipation of the batteries is not good. Based on this, this application embodiment provides a battery cell package assembly and electric bicycle, can make electric core reduce the occupation to bicycle storing space to improve the radiating effect of electric core.
To facilitate understanding of the present embodiment, a detailed description is first provided for a cell assembly structure disclosed in the embodiments of the present application.
Fig. 1 is an installation schematic diagram of a battery cell assembly structure provided in an embodiment of the present application, where the battery cell assembly structure includes: the electric core group is arranged in a body supporting steel pipe of the electric bicycle; the battery core group comprises a plurality of battery cores which are connected in series; the electric quantity of the electric cores connected in series meets the electric quantity requirement of the electric bicycle.
In the embodiment of the application, on the basis of the existing body support steel pipe self structure of the electric bicycle, the battery pack matched with the electric bicycle is arranged in the electric bicycle, so that the storage space of the electric bicycle occupied by the battery cells can be reduced. Different motorcycle types steel pipe thickness are inconsistent, can support the steel pipe to the automobile body of different thicknesses and select different electric cores, and concrete can be according to the diameter customization corresponding electric core of steel pipe, be 35135 or 40135's lithium cell like the model. For example, the lithium battery is cylindrical, and the diameter of the lithium battery is matched with the diameter of the vehicle body supporting steel pipe, i.e., the larger the diameter of the vehicle body supporting steel pipe is, the larger the diameter of the lithium battery can be selected.
Because the battery capacity with large diameter is large enough, for the electric bicycle, the batteries are connected in series only, and the power supply requirement of the vehicle can be realized by combining one battery at most. And (3) connecting the batteries in series, then loading the batteries into a steel pipe, and connecting 13 batteries in series according to the voltage of each battery cell of 3.7V, if 48V is needed, or connecting the corresponding number of batteries in series if 60V or 72V is needed. If the electric current demand is great, have under two circumstances at electric bicycle's automobile body support steel pipe, can also set up a electric core group in every automobile body support steel pipe, series connection between two electric core groups just so can increase total electric quantity, ensures to satisfy the required battery performance requirement of electric bicycle.
In the electric core package assembly that this application embodiment provided, electric core package assembly includes: the electric core group is arranged in a body supporting steel pipe of the electric bicycle; the battery core group comprises a plurality of battery cores which are connected in series; the electric quantity of the electric cores connected in series meets the electric quantity requirement of the electric bicycle. The embodiment of the application utilizes the hollow space of current automobile body support steel pipe the inside, installs the battery dispersion in each section automobile body support steel pipe, can save out a lot of storing spaces for the vehicle on the one hand, for the convenience that the user provided the storing, makes product competitiveness promote, and on the other hand can also provide the convenience for the battery heat dissipation, has improved the reliability of battery.
In order to ensure the connection stability between batteries and the smoothness of current conduction, the embodiment of the application provides two battery cell connection modes:
one connection mode is as follows: a clamping groove connection mode is set between two adjacent series-connected electric cores. Namely, two cells which are adjacently connected in series comprise a first cell and a second cell; the negative pole of first electric core is provided with the recess, and the positive pole of second electric core is provided with the protruding piece that coincide with the recess, and specific connected mode is shown with reference to fig. 2. The other connection mode is as follows: and fixedly connecting the positive electrode and the negative electrode of the two adjacent electric cores connected in series in a welding mode.
The two modes can ensure that the battery is stably and firmly connected and the smoothness of current conduction is ensured.
In order to facilitate real-time monitoring of voltage and current of the battery cells in the battery cell group, in the embodiment of the application, a detection line is led out from the connection part of the positive electrode and the negative electrode of each battery cell in the battery cell group and the positive electrode and the negative electrode of the battery cell group; a protective adhesive layer is arranged outside the electric core group leading out the detection lines; and a collecting line of a plurality of detection lines is led out from one sealing of the vehicle body supporting steel pipe to the BMS circuit.
In practical application, since the cells in a single steel pipe are connected in series, the single-string current monitoring is simple, as shown in fig. 3, if a single string is composed of 5 cells, only the current between points a and F needs to be collected, and the current between AF indicates the current of each cell. However, to monitor the voltage of each cell, it is necessary to wire between the positive electrode and the negative electrode of each cell, and if there are n cells, n +1 wires need to be connected. Because the wiring is more, for the reliability and the firm of guarantee circuit, this application embodiment provides a protection glue film similar to PCB circuit board, wholly surrounds in the outside of electric core group, places the protection glue in situ in the circuit that need connect away, just can not lead to the short circuit of circuit and or disconnection. And finally, all the wire harnesses are connected into the BMS circuit board through one wire at the position of one section of the seal of the steel pipe, so that the voltage can be acquired and monitored. The integral joint design is shown in figure 3.
In the running process of the vehicle, in order to ensure that the battery is fixed and does not shake, and meanwhile, because the steel pipe is a metal body, in order to ensure the insulation between the battery and the steel pipe, referring to fig. 4, in the embodiment of the application, an insulation adhesive is further arranged between the vehicle body supporting steel pipe and the protective adhesive layer. The insulating glue can play the role of insulating and fixing the battery once being cured, and further ensures the stability and firmness of the battery.
In the embodiment of the application, the control, management and protection of the electric core group are almost the same as those of the existing management method, and the requirement of the vehicle can be met on the whole. The dispersed arrangement of the battery core groups also greatly helps the heat dissipation of the whole battery system, and the service life and the reliability of the battery can be effectively improved.
The electric core package assembly that this application embodiment provided, very big utilization current automobile body steel pipe space, cooperation battery arrange and connect, can reserve the storing space that originally belongs to the battery package position for the user, improvement product competitiveness that can be obvious improves user satisfaction. Corresponding measures are designed for connection, insulation and fixation of the battery cell, and the requirement of vehicle operation is completely met.
Based on the battery cell assembly structure, an embodiment of the present application further provides an electric bicycle, where the electric bicycle includes a bicycle body and the battery cell assembly structure according to the first aspect; the battery cell assembling structure is arranged in a vehicle body supporting steel pipe of the vehicle body.
The electric bicycle provided by the embodiment of the application has the same implementation principle and technical effects as those of the foregoing battery cell assembly structure embodiment, and for brief description, reference may be made to corresponding contents in the foregoing battery cell assembly structure embodiment where no part of the embodiment of the electric bicycle is mentioned.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A battery cell assembly structure, comprising: the electric core group is arranged in a body supporting steel pipe of the electric bicycle; the battery core group comprises a plurality of battery cores which are connected in series; the electric quantity of the plurality of series-connected electric cores meets the electric quantity requirement of the electric bicycle.
2. The battery cell assembly structure of claim 1, wherein a clamping groove connection mode is set between two battery cells connected in series.
3. The cell assembly structure of claim 2, wherein two cells in adjacent series comprise a first cell and a second cell; the negative pole of first electric core is provided with the recess, the positive pole of second electric core is provided with the protruding piece that the recess coincide.
4. The battery cell assembly structure of claim 1, wherein the positive electrode and the negative electrode of two battery cells connected in series are fixedly connected by welding.
5. The battery cell assembly structure of claim 1, wherein a detection line is led out from a joint of the positive electrode and the negative electrode of each battery cell in the battery cell group and the positive electrode and the negative electrode of the battery cell group; a protective adhesive layer is arranged outside the electric core group leading out the detection lines; and leading out a summary wire of the detection wires to a BMS circuit at one sealing of the vehicle body supporting steel pipe.
6. The battery cell assembly structure of claim 5, wherein an insulating adhesive is disposed between the vehicle body support steel pipe and the protective adhesive layer.
7. The battery cell assembly structure of claim 1, wherein there are two body support steel pipes of the electric bicycle, and each body support steel pipe is provided with one battery cell group, and the two battery cell groups are connected in series.
8. The battery cell assembly structure according to claim 1, wherein the battery cell is a lithium battery.
9. The battery cell assembly structure of claim 8, wherein the lithium battery is cylindrical, and the diameter of the lithium battery is matched with that of the vehicle body support steel pipe.
10. An electric bicycle, characterized in that the electric bicycle comprises a bicycle body and a battery cell assembling structure according to any one of claims 1 to 9; the battery cell assembling structure is arranged in the vehicle body supporting steel pipe of the vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110462204.7A CN113193284A (en) | 2021-04-27 | 2021-04-27 | Battery cell assembling structure and electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110462204.7A CN113193284A (en) | 2021-04-27 | 2021-04-27 | Battery cell assembling structure and electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113193284A true CN113193284A (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110462204.7A Pending CN113193284A (en) | 2021-04-27 | 2021-04-27 | Battery cell assembling structure and electric bicycle |
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| CN (1) | CN113193284A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202333051U (en) * | 2011-11-16 | 2012-07-11 | 深圳先进储能材料国家工程研究中心有限公司 | Battery convenient for combination and connection |
| CN102593917A (en) * | 2012-03-12 | 2012-07-18 | 无锡新纬电池有限公司 | Voltage balancing method of high-precision lithium battery module |
| CN206585037U (en) * | 2017-03-07 | 2017-10-24 | 李娟� | A kind of novel lithium battery and electric bicycle |
| CN109130907A (en) * | 2018-07-30 | 2019-01-04 | 苏州小蜻蜓电动车有限公司 | A kind of easy-to-mount electric bicycle modularization power supply system |
| CN210912731U (en) * | 2019-07-31 | 2020-07-03 | 广州市鑫堡自行车有限公司 | Vehicle frame convenient to assemble |
| CN211642441U (en) * | 2019-11-07 | 2020-10-09 | 衢州耐佳特车业有限公司 | Placing structure for built-in battery of electric bicycle |
| CN211719693U (en) * | 2020-04-28 | 2020-10-20 | 蜂巢能源科技有限公司 | Monomer electricity core, electricity core subassembly and battery package |
-
2021
- 2021-04-27 CN CN202110462204.7A patent/CN113193284A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202333051U (en) * | 2011-11-16 | 2012-07-11 | 深圳先进储能材料国家工程研究中心有限公司 | Battery convenient for combination and connection |
| CN102593917A (en) * | 2012-03-12 | 2012-07-18 | 无锡新纬电池有限公司 | Voltage balancing method of high-precision lithium battery module |
| CN206585037U (en) * | 2017-03-07 | 2017-10-24 | 李娟� | A kind of novel lithium battery and electric bicycle |
| CN109130907A (en) * | 2018-07-30 | 2019-01-04 | 苏州小蜻蜓电动车有限公司 | A kind of easy-to-mount electric bicycle modularization power supply system |
| CN210912731U (en) * | 2019-07-31 | 2020-07-03 | 广州市鑫堡自行车有限公司 | Vehicle frame convenient to assemble |
| CN211642441U (en) * | 2019-11-07 | 2020-10-09 | 衢州耐佳特车业有限公司 | Placing structure for built-in battery of electric bicycle |
| CN211719693U (en) * | 2020-04-28 | 2020-10-20 | 蜂巢能源科技有限公司 | Monomer electricity core, electricity core subassembly and battery package |
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Application publication date: 20210730 |