Description:TITLE OF THE INVENTION: A PACK FOR A LECCY SUPPLYING MEMBER OF A LOCOMOTORY DEVICE
FIELD OF THE INVENTION
The present disclosure is generally related to leccy supplying members. Particularly, the present disclosure is related to a pack for a leccy supplying member. More particularly, the present disclosure is related to a pack for a leccy supplying member of a locomotory device.
BACKGROUND OF THE INVENTION
With a growing demand for locomotory devices, limitations of conventional leccy supplying member technologies have come to the fore, particularly in terms of performance, safety, and thermal management. Since conventional lithium-ion leccy supplying members have low thermal stability, a short lifespan, and are prone to thermal runaway in high-demand situations, lithium iron phosphate (LFP) leccy supplying members have gained popularity as a viable replacement, because of their enhanced performance.
However, existing packs for said LFP leccy supplying members suffer from drawbacks such as: complex construction; inefficient space utilisation; suboptimal weight distribution; and/or design constraints that prevent integration into locomotory devices. These limitations can result in a compromised riding experience, reduced handling performance, and/or increased risk of leccy supplying member failure.
There is, therefore, a need in the art, for: a pack for a leccy supplying member of a locomotory device, which overcomes the aforementioned drawbacks and shortcomings.
SUMMARY OF THE INVENTION
A pack for a leccy supplying member of a locomotory device, is disclosed. Said pack broadly comprises: a first bowering member; a second bowering member; a plurality of cells; a plurality of cell clasping members; a plurality of cell connecting members; and a plurality of hasping members.
Said first bowering member and said second bowering member serve as an outer casing of the all the components of the pack. Said plurality of cells are configured in a 22 series, 3 parallel configurations. Said plurality of cells comprises: a module 1 and a module 2. Said module 1 and said module 2 are serially connected with each other.
Said module 1 comprises: one half of three rows of serially connected cells, where each row among said three rows comprises eleven serially connected cells. Likewise, said module 2 comprises: another half of said three rows of serially connected cells, where said each row among said three rows comprises eleven serially connected cells.
Each cell in a first row among the three rows of serially connected cells is parallelly connected to a respective cell in a second row among the three rows of serially connected cells, and each cell in the second row among said three rows of serially connected cells is parallelly connected to a respective cell in a third row among the three rows of serially connected cells;
Said plurality of cell clasping members is disposed between the plurality of cells and said plurality of cell connecting members, on both sides of the plurality of cells. Said plurality of cell clasping members securely holds the plurality of cells.
Said plurality of cell connecting members connects a positive terminal of each cell in the module 1 to a respective negative terminal of another cell in the module 2. Said plurality of cell connecting members distributes electricity from the plurality of cells. Said plurality of hasping members secures the pack for a leccy supplying member with a chassis of the locomotory device.
The disclosed pack offers at least the following advantages: is simple in construction; is cost-effective; offers a high efficiency; offers efficient space utilisation and optimal integration into the locomotory devices; offers maximum energy density and enhanced thermal management; and/or ensures safety.
 
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 illustrates a perspective view of a pack for a leccy supplying member, in respect of a locomotory device, in accordance with an embodiment of the present disclosure;
Figure 2 illustrates an exploded view of a pack for a leccy supplying member, in respect of a locomotory device, in accordance with an embodiment of the present disclosure;
Figure 3 illustrates a perspective view of a locomotory device integrated with a pack for a leccy supplying member, in accordance with an embodiment of the present disclosure;
Figure 4 illustrates securing of a pack for a leccy supplying member in a locomotory device, in accordance with an embodiment of the present disclosure;
Figure 5 illustrates modules of a pack for a leccy supplying member, in respect of a locomotory device, in accordance with an embodiment of the present disclosure;
Figure 6 illustrates a perspective view of a module among the modules of a pack for a leccy supplying member, in respect of a locomotory device, in accordance with an embodiment of the present disclosure;
Figure 7A and Figure 7B illustrate side views of configuration of a plurality of cells, a plurality of cell clasping members, and a plurality of cell connecting members, in accordance with an embodiment of the present disclosure;
Figure 8 illustrates a perspective view of configuration of a module 1 and a module 2, in a pack for a leccy supplying member, in accordance with an embodiment of the present disclosure;
Figure 9 illustrates a series connection of a plurality of cells, in a pack for a leccy supplying member, in accordance with an embodiment of the present disclosure; and
Figure 10 illustrates a parallel connection of a plurality of cells, in a pack for a leccy supplying member, in accordance with an embodiment of the present disclosure.
DETAILED DESCRIPTION OF THE INVENTION
Throughout this specification, the use of the words “comprise” and “include”, and variations, such as “comprises”, “comprising”, “includes”, and “including”, may imply the inclusion of an element (or elements) not specifically recited. Further, the disclosed embodiments may be embodied, in various other forms, as well.
Throughout this specification, the use of the word “apparatus” and the phrase “pack for a leccy supplying member” is to be construed as: “a set of technical components (also referred to as “members”) that are communicatively and/or operably associated with each other, and function together, as part of a mechanism, to achieve a desired technical result”.
Throughout this specification, the use of the words “communication”, “couple”, and their variations (such as communicatively), is to be construed as being inclusive of: one-way communication (or coupling); and two-way communication (or coupling), as the case may be, irrespective of the directions of arrows, in the drawings.
Throughout this specification, where applicable, the use of the phrase “at least” is to be construed in association with the suffix “one” i.e. it is to be read along with the suffix “one”, as “at least one”, which is used in the meaning of “one or more”. A person skilled in the art will appreciate the fact that the phrase “at least one” is a standard term that is used, in Patent Specifications, to denote any component of a disclosure, which may be present (or disposed) in a single quantity, or more than a single quantity.
Throughout this specification, where applicable, the use of the phrase “at least one” is to be construed in association with a succeeding component name.
Throughout this specification, the use of the word “plurality” is to be construed as being inclusive of: “at least one”.
Throughout this specification, the use of the word “leccy” is to be construed as: “power; and/or the like”.
Through this specification, the use of the phrase "leccy supplying member" is to be construed as: "battery; and/or the like".
Throughout this specification, the use of the phrase "pack for a leccy supplying member" is to be construed as: "battery pack; and/or the like".
Throughout this specification, the use of the phrase "pack for a leccy supplying member of a locomotory device" is to be construed as: "battery pack for a locomotory device; and/or the like".
Throughout this specification, the use of the phrase “locomotory device”, and its variations, is to be construed as: “electric vehicles; hybrid vehicles; and/or the like” For example, the electric vehicle is a two wheeled electric vehicle, for example, an electric motorcycle.
Throughout this specification, the use of the word “bowering”, and its variations, is to be construed as: “enclosing; covering; protecting; and/or the like”.
Throughout the specification, the use of the word “clasping” and its variations, is to be construed as “holding; connecting; and/or the like”
Throughout this specification, the use of the word “hasping”, and its variations, is to be construed as: “fastening; securing; mounting; and/or the like”.
Throughout this specification, the use of the word “user” is to be construed as: “a person who uses a locomotory device that is integrated with (or that comprises) the disclosed pack for a leccy supplying member”.
Throughout this specification, the words “the” and “said” are used interchangeably.
Throughout this specification, the phrases “at least a”, “at least an”, and “at least one” are used interchangeably.
Throughout this specification, the disclosure of a range is to be construed as being inclusive of: the lower limit of the range; and the upper limit of the range.
Also, it is to be noted that embodiments may be described as a method. Although the operations, in a method, are described as a sequential process, many of the operations may be performed in parallel, concurrently, or simultaneously. In addition, the order of the operations may be re-arranged. A method may be terminated, when its operations are completed, but may also have additional steps.
As illustrated in Figure 1, Figure 2, and Figure 6, a pack for a leccy supplying member (100) of a locomotory device (also referred to as “apparatus” and/or “pack”), is disclosed. Said apparatus (100) broadly comprises: a first bowering member (101; for example, a LFP-72Ah battery pack top shell), a second bowering member (102; for example, a LFP-72Ah battery pack bottom shell); an at least a leccy supplying member management system (103; for example, a battery management system, which may be of any suitable type that is known in the art); a plurality of cells (104; for example, 46120 cells); a plurality of cell clasping members (105; for example, a cell holder); a plurality of cell connecting members (106; for example, bus bars); and a plurality of hasping members (107).
Said plurality of cells (104) further comprises a module 1 (105.1) and a module 2 (105.2).
The first bowering member (101) is positioned at (disposed at, or installed at, or mounted at, or associated with) the top portion of the apparatus (100), whereas the second bowering member (102) is positioned at (disposed at, or installed at, or mounted at, or associated with) the bottom portion of the apparatus (100). Said first bowering member (101) and the second bowering member (102) together serves as an outer casing of the apparatus (100) that facilitates housing of all the components.
In an embodiment of the present disclosure, the first bowering member (101) and the second bowering member (102) is made of a mild steel cold rolled close annealed (MS CRCA) steel with a thickness of about 2 mm.
In another embodiment of the present disclosure, said MS CRCA provides excellent strength and impact resistance, safeguarding the internal components of the apparatus (100) from environmental as well as operational stresses.
The at least one leccy supplying member management system (103) is positioned at (disposed at, or installed at, or mounted at, or associated with) the top portion of the plurality of cells (104).
In yet another embodiment of the present disclosure, said at least one leccy supplying member management system (103) is communicatively associated with all the components of the pack (100) as well as the components of the locomotory device (like chargers, inverters, or vehicle control systems) to relay information about status of the plurality of cells (104).
In yet another embodiment of the present disclosure, the at least one leccy supplying member management system (103) performs following functions or safety features;
Over Voltage: Monitors the plurality of cells (104) to ensure that none of the cell among the plurality of cells (104) exceeds voltage range of about 3.6 V per cell.
Under Voltage: When the voltage of any cell among the plurality of cells (104) drops below the predefined threshold of about 2.5 V per cell, the at least one leccy supplying member management system (103) may disconnect the leccy supplying member from load (for example, the locomotory device or the power system) to prevent further discharge.
Over Current: Limits flow of current during charging/discharging, especially with a peak discharging current of about 180A.
Temperature Control: Monitors temperature across the apparatus (100), suspending charging or discharging, when said temperature exceeds a specified range from about 0 °C to about 60 °C during charging and about -20 °C to about 60 °C during discharging.
Balancing: Ensures voltage balancing across the plurality of cells (104), preventing overcharging or undercharging.
Short Circuit Protection: Detects high current from a short circuit and disconnects the pack (100) to prevent any damage.
Detection of Reverse Polarity: The at least one leccy supplying member management system (103) incorporates specialised polarity detection circuits to monitor the polarity of the incoming power from the leccy supplying member. If positive and negative connections are reversed, the at least one leccy supplying member management system (103) detects such changes through the polarity detection circuits.
State of Charge (SoC) estimation: Calculates the SoC by providing information about how much energy is left in the apparatus (100), enabling users to manage energy consumption effectively.
Data Reporting: Communicates with other components (like chargers, inverters, or vehicle control systems) of the locomotory device to relay information about status of the apparatus (100).
User Interface: Displays information to said users, such as remaining current capacity, health status, and alerts.
The pack (100) is equipped with clearly marked and easily accessible connection ports for charging and interfacing with the at least one leccy supplying member management system (103) is positioned on (disposed on, or installed on, or mounted on, or associated with) one side of the pack (100), enhancing user convenience.
Optimal weight distribution, achieved through a low center of gravity, is paramount for maximising the stability and handling characteristics of the locomotory device, especially under demanding operational conditions such as acceleration and cornering.
As illustrated, in Figure 2, the plurality of cell clasping members (105) is disposed between the plurality of cells (104) and the plurality of cell connecting members (106), on both sides of the plurality of cells (104).
Figure 3 illustrates a perspective view of the locomotory device integrated with the pack (100).
In yet another embodiment of the present disclosure, the plurality of cells (104) is lithium iron phosphate (LFP or LiFePO₄) cells. Said plurality of cells (104) are configured in a 22s3p (22 series, 3 parallel) configuration to obtain desired voltage and current capacity. In the pack (100), the configuration of the plurality of cells (104) directly influences ion movement, electron transfer, and the leccy supplying member’s performance.
Said module 1 (105.1) and said module 2 (105.2) accommodate the plurality of cells (104), configured in a 22s3p configuration as illustrated in Figure 5.
Figure 8 illustrates a perspective view of configuration of said module 1 (105.1) and said module 2 (105.2), in said pack (100).
As illustrated in Figure 10, said module 1 (105.1) comprises one half of about 3 rows (for example, 1st row, 2nd row, and 3rd row) of serially connected cells, where each row comprises about 11 serially connected cells (from 1st cell to 11th cell). Said module 2 (105.2) also comprises another half of the about 3 rows of serially connected cells, where each row comprises about 11 serially connected cells (from 12th cell to 22nd cell).
As illustrated, in Figure 10, in said module 1 (105.1) and said module 2 (105.2), each cell in the 1st row among the 3 rows of serially connected plurality of cells (104) is parallelly connected to a respective cell in the 2nd row among the 3 rows of serially connected plurality of cells (104). Likewise, each cell in the 2nd row among the said 3 rows of serially connected plurality of cells (104) is parallelly connected to a respective cell in the 3rd row among the 3 rows of serially connected plurality of cells (104).
Cells per module: 11×3=33 cells
Total number of cells in said module 1 (105.1) and said module 2 (105.2): 33×2 = 66 cells
In yet another embodiment of the present disclosure, as illustrated in Figure 9 and Figure 10, each row among the 3 rows of serially connected cells, in said module 1 (105.1) and said module 2 (105.2), are serially connected through 11th cell of the module 1 (105.1) and 12th cell of the module 2 (105.2) resulting in a total of about 22 cells.
The plurality of cell connecting members (106) connects positive terminal (106.2) of one cell in the module 1 (105.1) to negative terminal (106.1) of another cell in the module 2 (105.2).
In yet another embodiment of the present disclosure, the positive end of the 22nd cell, among the plurality of cells (104) is the positive terminal (106.2) of the apparatus (100), whereas the negative end of the 1st cell among the plurality of cells (104), is the negative terminal (106.1) of the apparatus (100).
In yet another embodiment of the present disclosure, said negative terminal (106.1) and said positive terminal (106.2) are made of nickel that can withstand high current loads.
Voltage in Series Connection
In the series connection, voltage across each row of serially connected cells would be the sum of the individual cell voltages while current remains constant. If nominal voltage for a cell among the plurality of cells (104) is about 3.2 V, then the total nominal voltage in each row of serially connected cells is,
22 x 3.2 V = 70.4 V
Full charge voltage for the pack (100) is,

22 × 3.6 V=79.2 V

Current Capacity in Parallel Connection
In the parallel connection, the voltage remains the same, but the current (Ah) capacity increases. If each cell among the 3 parallelly connected cells, provides the current of about 24 Ah, then the total current capacity of the pack (100) is,
3 x 24 Ah = 72 Ah
Electrical parameters for the pack (100) are provided in the table given below.
Configuration Total no. of Cells Nominal Voltage Total Capacity Pack Weight Modules
22s3p 66 cells (22s x 3p) 70.4 V 72 Ah 48 Kg 2
Performance characteristics of the pack for leccy supplying member (100) are provided in the table given below.
Sl.no Performance Characteristics Values
1 Nominal Voltage 3.2V per cell
2 Fully Charged Voltage 3.6V per cell
3 Discharge Cutoff Voltage 2.5V per cell
4 Current Capacity 24 Ah per cell
5 Cycle Life 15,00 cycles
6 Self-Discharge Rate ~2-3 % per month
7 Internal Resistance 20-40 mΩ per cell
8 Charging Time 4.5 hrs.
9 Charge Current 0.2 C
10 Discharge Current Up to 1 C to 3 C
11 Temperature Range Charging: 0 °C to 60 °C,
Discharging: -20 °C to 60 °C
12 Cell Model 46120
13 Weight of the Pack for a Leccy Supplying Member 48 Kg
In yet another embodiment of the present disclosure, said plurality of cells (104) are organised in a staggered configuration, promoting effective airflow and improving thermal management. Such configuration enhances energy density and ensures even weight distribution across the locomotory device, improving handling, and stability.
The plurality of cell clasping members (105) securely hold the plurality of cells (104) to ensure that said plurality of cells (104) remain configured to the pack (100).
In yet another embodiment of the present disclosure, in said 22s3p configuration, each cell among the plurality of cells (104) is retrofittable, allowing users to customise the energy storage capacity according to specific requirements.
In yet another embodiment of the present disclosure, said plurality of cell connecting members (106) facilitates distribution of electricity from the plurality of cells (104) to the components of the pack (100).
The plurality of hasping members (107) secure the apparatus (100) to chassis of the locomotory device with (or through) respective mounting points, where about three mounting points are positioned at (disposed at, or installed at, or mounted at, or associated with) the left-hand side of the locomotory device and another three mounting points are positioned at (disposed at, or installed at, or mounted at, or associated with) the right-hand side of the locomotory device making up a total of about 6 mounting points, as illustrated in Figure 4.
In yet another embodiment of the present disclosure, the plurality of hasping members (107) is M6x16 mm hex flange bolts.
Figure 7A and Figure 7B illustrate side views of configuration of said plurality of cells (104), said plurality of cell clasping members (105), and said plurality of cell connecting members (106).
The disclosed apparatus (100) offers at least the following advantages: is simple in construction; is cost-effective (costs about Rs. 75,000); offers a high efficiency; offers efficient space utilisation and optimal integration into the locomotory devices; offers maximum energy density and enhanced thermal management; and/or ensures safety.
A person skilled in the art will appreciate the fact that the apparatus (100), and its various components, may be made of any suitable materials known in the art. Likewise, a person skilled in the art will also appreciate the fact that the configurations of the apparatus (100) and its various components, may be varied, based on requirements.
The above description pertains to an electric motorcycle. However, a person skilled in the art will appreciate the fact that the apparatus (100) may be adapted to (or may be configured for) other types of electric vehicles, as well.
It will be apparent to a person skilled in the art that the above description is for illustrative purposes only and should not be considered as limiting. Various modifications, additions, alterations, and improvements, without deviating from the spirit and the scope of the disclosure, may be made, by a person skilled in the art. Such modifications, additions, alterations, and improvements, should be construed as being within the scope of this disclosure.
LIST OF REFERENCE NUMERALS
100 - Pack for a Leccy Supplying Member
101 - First Bowering Member
102 - Second Bowering Member
103 - At Least a Leccy Supplying Member Management System
104 - Plurality of Cells
105 - Plurality of Cell Clasping Members
105.1 - Module 1
105.2 - Module 2
106 - Plurality of Cell Connecting Members
106.1 - Negative Terminal
106.2 - Positive Terminal
107 - Plurality of Hasping Members , Claims:1. A pack for a leccy supplying member (100) of a locomotory device, comprising an at least a leccy supplying member management system (103), characterised in that, said pack (100) comprises:
a first bowering member (101) and a second bowering member (102) that serve as an outer casing;
a plurality of cells (104) that is disposed in a 22 series, 3 parallel configuration, said plurality of cells (104) comprising: a module 1 (105.1) and a module 2 (105.2) that are serially connected with each other, with:
said module 1 (105.1) comprising: one half of three rows of serially connected cells, where each row among said three rows comprises eleven serially connected cells;
said module 2 (105.2) comprising: another half of said three rows of serially connected cells, where said each row among said three rows comprises eleven serially connected cells;
each cell in a first row among the three rows of serially connected cells being parallelly connected to a respective cell in a second row among the three rows of serially connected cells; and
each cell in the second row among said three rows of serially connected cells being parallelly connected to a respective cell in the third row among the three rows of serially connected cells;
a plurality of cell clasping members (105) that is disposed between the plurality of cells (104) and a plurality of cell connecting members (106), on both sides of the plurality of cells (104), with: said plurality of cell clasping members (105) securely holding the plurality of cells (104);
said plurality of cell connecting members (106) connecting a positive terminal (106.2) of each cell in the module 1 (105.1) to a respective negative terminal (106.1) of another cell in the module 2 (105.2), with: said plurality of cell connecting members (106) distributing electricity from the plurality of cells (104); and
a plurality of hasping members (107) that secures the pack for a leccy supplying member (100) with a chassis of the locomotory device.
2. The pack for a leccy supplying member (100) of a locomotory device, as claimed in claim 1, wherein: the first bowering member (101) and the second bowering member (102) are made of mild steel cold rolled close annealed steel with a thickness of 2 mm.
3. The pack for a leccy supplying member (100) of a locomotory device, as claimed in claim 1, wherein: said plurality of cells (104) are lithium iron phosphate cells.
4. The pack for a leccy supplying member (100) of a locomotory device, as claimed in claim 1, wherein: said negative terminal (106.1) and the positive terminal (106.2) are made of nickel.