Titanium niobate battery PACK structure

Abstract

The invention relates to the technical field of titanium niobate battery PACK structures, and discloses a titanium niobate battery PACK structure which comprises a lower shell, an upper shell is arranged at the top of the lower shell, the interior of the lower shell is hollow, the lower shell is integrally formed by stamping a metal plate, the upper shell is formed by casting aluminum in a die-casting mode, an inner support is fixedly installed in the lower shell, and a plurality of outer supports are fixedly installed in the lower shell. A battery cell is fixedly installed in the internal support, a battery cell connecting plate is arranged at the top of the internal support, and the battery cell connecting plate is in circuit communication with the battery cell. Through the arrangement of the structure, the titanium niobate system battery cell is introduced, the charging and discharging problem of the battery pack in a cold area is effectively solved, the PACK structure is integrally designed, and the battery pack is more compact in structure and more compact in structure. And the use requirements of vehicle types such as two-wheel and three-wheel electric bicycles, light electric motorcycles and electric motorcycles are effectively met, the battery cell has high power, long service life, low temperature resistance and high safety, the use safety and the endurance requirement of a user can be guaranteed, and great convenience is brought to the user in use.

Description

Technical Field

[0001] The present invention relates to the technical field of titanium niobate battery PACK structures, and in particular to a titanium niobate battery PACK structure. Background Art

[0002] A battery is a device that can directly convert chemical energy, light energy, thermal energy, nuclear energy and other forms of energy into electrical energy. A battery refers to a cup, trough or other container or part of a composite container that contains an electrolyte solution and a metal electrode to generate an electric current. It is a device that can convert chemical energy into electrical energy. It has a positive electrode and a negative electrode. With the advancement of science and technology, batteries generally refer to small devices that can generate electrical energy, such as solar cells. The performance parameters of batteries mainly include electromotive force, capacity, specific energy and resistance. Using batteries as an energy source can obtain a current with stable voltage, stable current, long-term stable power supply, and little external influence. In addition, the battery has a simple structure, is easy to carry, and is easy to charge and discharge. It is not affected by external climate and temperature. The performance is stable and reliable, and it plays a great role in all aspects of modern social life.

[0003] Currently in the domestic battery market, batteries with high market applicability, such as ternary batteries and lithium iron phosphate batteries, are extremely inapplicable in cold areas. The batteries have poor low-temperature resistance and are prone to crystallization and piercing the diaphragm at low temperatures, causing safety accidents and being unfavorable for users. For this reason, we propose a titanium niobate battery PACK structure. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a titanium niobate battery PACK structure to solve the above-mentioned problems.

[0005] The present invention provides the following technical solution: a titanium niobate battery PACK structure, comprising a lower shell, an upper shell is arranged on the top of the lower shell, an internal bracket is fixedly installed inside the lower shell, a battery cell is fixedly installed inside the internal bracket, a battery cell connecting plate is arranged on the top of the internal bracket, the battery cell connecting plate and the battery cell are connected in circuit, a water tank is fixedly installed inside the lower shell, a circulating heat dissipation component is arranged inside the lower shell, and a plurality of heat dissipation holes distributed at equal distances are opened on one side of the lower shell.

[0006] Preferably, the interior of the lower shell is hollow in design, the lower shell is formed by integral stamping of sheet metal, and the upper shell is formed by cast aluminum die-casting.

[0007] Preferably, a socket is provided on the top of the upper shell, and a handle is fixedly connected to the top of the upper shell, and the handle is made of rubber material.

[0008] Preferably, the battery cell is a soft-pack titanium niobate battery cell, and a plurality of battery cells are connected in series using a series connection scheme.

[0009] Preferably, a BMS is arranged outside the battery cell, a packaging board is arranged outside the BMS, and the other side of the packaging board is installed on one side of the inner wall of the lower shell.

[0010] Preferably, a buffer rubber sleeve is provided between the lower shell and the upper shell, and the material of the buffer rubber sleeve is rubber material.

[0011] Preferably, the circulating heat dissipation component includes circulating pipes arranged on both sides of the lower shell, one end of the circulating pipe is connected to a water inlet pipe, and the other end of the circulating pipe is connected to a water outlet pipe, and the water inlet pipe and the water outlet pipe both extend to the interior of the water tank.

[0012] Preferably, a water pump is arranged on the outside of the water inlet pipe, the two water outlet pipes are connected by the same connecting pipe, a boosting pump is arranged on the outside of the connecting pipe, a rotating shaft is rotatably connected to the bottom of the inner wall of the water tank, the top of the rotating shaft extends to the top of the water tank, four circumferentially distributed fan blades are fixedly connected to the top of the rotating shaft, four circumferentially distributed paddle blades are fixedly connected to the outside of the rotating shaft, and the water outlet end of the connecting pipe is above the paddle blades.

[0013] The beneficial effects of the present invention are as follows: the battery cell of the device is a soft-pack titanium niobate battery cell, which has high power, long life, high safety and low temperature resistance. The battery cell connection adopts a series connection scheme, and a single large-capacity battery cell is used. The battery cell connection plate has collection and overcurrent functions. The battery cells are connected in series, and the battery cells can be charged and discharged through the set sockets. When packaging the module, the device adopts an open-mold plastic bracket to prepare it into an internal bracket form, with a front and rear double shell to package the battery cell module. Through the set BMS, the BMS can manage the charging and discharging of the battery and related overvoltage, overcurrent, overtemperature and other protection functions. The BMS will always pay attention to the voltage of each single battery in the battery pack to prevent individual batteries from being overcharged or over-discharged. If the voltage of a battery is too high, the BMS MS will adjust the charging strategy in time to avoid dangerous situations. The internal bracket side is designed with an assembly position for installing BMS. The BMS side is protected by an one-piece cast aluminum packaging plate, which can effectively transfer the BMS heat to the outer shell for heat dissipation. The lower shell and the upper shell can be buffered by setting a buffer rubber sleeve between the lower shell and the upper shell. Through the above structure, titanium niobate system battery cells are introduced to effectively solve the charging and dissipation problems of battery packs in cold areas. The integrated PACK structure design effectively solves the use needs of two-wheeled and three-wheeled electric bicycles, light electric motorcycles, electric motorcycles and other models. The battery cells have high power, long life, low temperature resistance and high safety, which can ensure the user's safety and endurance needs, greatly facilitating user use.

[0014] By starting the water pump, the cold water inside the water tank can be pumped into the inside of the circulation pipe, and the cold water can absorb the heat inside the lower shell, and the water will be discharged to the inside of the water tank through the water outlet pipe and the connecting pipe. By starting the booster pump, the pressure at the water outlet end of the connecting pipe can be increased, and the water discharged from the water outlet end of the connecting pipe will pass through the paddles, which can drive the rotating shaft and the fan blades to rotate. Through the rotation of the fan blades, the hot air inside the lower shell can be discharged through the heat dissipation holes. Through the above structure, the titanium niobate battery PACK structure can be cooled to avoid local overheating causing battery performance degradation or even thermal runaway. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure explosion of the present invention;

[0017] Figure 3 It is a schematic diagram of the three-dimensional battery cell, BMS, battery cell connection plate and internal bracket structure of the present invention;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the upper shell and the buffer rubber sleeve of the present invention;

[0019] Figure 5 It is a schematic diagram of the structure of a three-dimensional circulating heat dissipation component of the present invention;

[0020] Figure 6 It is a schematic cross-sectional view of the three-dimensional circulating heat dissipation component structure of the present invention;

[0021] Figure 7 It is a schematic diagram of the three-dimensional lower shell structure of the present invention.

[0022] In the figure: 1. lower shell; 2. upper shell; 3. handle; 4. socket; 5. internal bracket; 6. battery cell; 7. BMS; 8. battery cell connecting plate; 9. packaging plate; 10. buffer rubber sleeve; 11. heat dissipation hole; 12. water tank; 13. circulation pipe; 14. water inlet pipe; 15. water pump; 16. water outlet pipe; 17. connecting pipe; 18. booster pump; 19. rotating shaft; 20. blades; 21. fan blades. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 7, including a lower shell 1, an upper shell 2 is arranged on the top of the lower shell 1, an internal bracket 5 is fixedly installed inside the lower shell 1, a battery cell 6 is fixedly installed inside the internal bracket 5, a battery cell connecting plate 8 is arranged on the top of the internal bracket 5, the battery cell connecting plate 8 and the battery cell 6 are circuit-connected, the battery cell connecting plate 8 has collection and overcurrent functions, and connects the battery cells in series, a water tank 12 is fixedly installed inside the lower shell 1, a circulating heat dissipation component is arranged inside the lower shell 1, and a plurality of heat dissipation holes 11 distributed at equal distances are opened on one side of the lower shell 1, and the heat inside the lower shell 1 can be discharged through the plurality of heat dissipation holes 11.

[0025] Furthermore, the interior of the lower shell 1 is hollow in design, the lower shell 1 is formed by integral stamping of sheet metal, and the upper shell 2 is formed by cast aluminum die-casting. The lower shell 1 is used to store the battery cell 6, BMS 7, battery cell connecting plate 8 and internal bracket 5.

[0026] Furthermore, a socket 4 is provided on the top of the upper shell 2, and a handle 3 is fixedly connected to the top of the upper shell 2. The handle 3 is made of rubber. The rubber handle 3 improves the comfort of the user when using the handle 3 to pick up the battery.

[0027] Further, the battery cell 6 is a soft-pack titanium niobate battery cell, and a plurality of battery cells 6 are connected in series using a series connection scheme. By setting the battery cell 6, the battery cell 6 is a soft-pack titanium niobate battery cell, and the titanium niobate battery cell is a lithium-ion battery cell using titanium niobate as a negative electrode material. The titanium niobate battery cell has the following advantages;

[0028] Fast charging and discharging: Titanium niobate is used as the negative electrode material. The unit cell volume changes little during the lithium ion insertion and extraction process, which allows the lithium battery to be fully charged in about 5 minutes. Compared with traditional graphite negative electrode materials, the charging time is greatly shortened by 12.

[0029] Long cycle life: It has good chemical and thermal stability, and can withstand multiple charge and discharge cycles without structural damage. Theoretically, it can be charged and discharged for more than 10,000 times, with a service life of up to 20 years12.

[0030] High safety: It can avoid electrolyte decomposition, generate less heat during charging and discharging, reduce the risk of battery overheating, fire and explosion, and improve battery safety.

[0031] High theoretical specific capacity: Its theoretical specific capacity is higher than that of graphite negative electrode, which can store more electricity, thereby increasing the energy density of the battery.

[0032] The connection of the battery cell 6 adopts a series connection scheme, using a single large-capacity battery cell 6, and the battery cell connection plate 8 has the collection and overcurrent functions to connect the battery cells in series.

[0033] Furthermore, a BMS7 is arranged outside the battery cell 6, and a packaging board 9 is arranged outside the BMS7, and the other side of the packaging board 9 is installed on one side of the inner wall of the lower shell 1. Through the arranged BMS7, the BMS7 can manage the charging and discharging of the battery and related overvoltage, overcurrent, overtemperature and other protection functions. The BMS 7 will always pay attention to the voltage of each single battery in the battery pack to prevent individual batteries from being overcharged or over-discharged. If the voltage of a battery is too high, the BMS7 will adjust the charging strategy in time to avoid dangerous situations. An assembly position is designed on the side of the internal bracket 5 for installing the BMS7. The side of the BMS7 is protected by an integrally formed cast aluminum packaging board, which can effectively transfer the heat of the BMS7 to the outer shell for easy heat dissipation.

[0034] Furthermore, a buffer rubber sleeve 10 is provided between the lower shell 1 and the upper shell 2 . The buffer rubber sleeve 10 is made of rubber material. By providing the buffer rubber sleeve 10 between the lower shell 1 and the upper shell 2 , the lower shell 1 and the upper shell 2 can be buffered.

[0035] Furthermore, the circulating heat dissipation component includes a circulating pipe 13 arranged on both sides of the lower shell 1, one end of the circulating pipe 13 is connected to the water inlet pipe 14, and the other end of the circulating pipe 13 is connected to the water outlet pipe 16, the water inlet pipe 14 and the water outlet pipe 16 both extend to the inside of the water tank 12, the circulating pipe 13 arranged on both sides of the lower shell 1 and the inside of the circulating pipe 13 are filled with cold water, so that the heat inside the lower shell 1 can be absorbed, and the water in the circulating pipe 13 can be exchanged with the water inside the water tank 12.

[0036] Furthermore, a water pump 15 is provided on the outside of the water inlet pipe 14, and the cold water in the water tank 12 can be pumped into the inside of the circulation pipe 13 through the water pump 15. The two water outlet pipes 16 are connected by the same connecting pipe 17, and a booster pump 18 is provided on the outside of the connecting pipe 17. The pressure at the water outlet end of the connecting pipe 17 can be increased by the booster pump 18. A rotating shaft 19 is rotatably connected to the bottom of the inner wall of the water tank 12, and the top of the rotating shaft 19 extends to the top of the water tank 12. Four circumferentially distributed fan blades 21 are fixedly connected to the top of the rotating shaft 19, and the lower shell 1 can be dissipated by the rotation of the fan blades 21. Four circumferentially distributed paddle blades 20 are fixedly connected to the outside of the rotating shaft 19, and the water outlet end of the connecting pipe 17 is above the paddle blades 20. The rotating shaft 19 can be driven to rotate by the water flow impacting the paddle blades 20.

[0037] In the specific implementation of the present invention, the battery cell 6 of the device is a soft-pack titanium niobate battery cell, which has high power, long life, high safety and low temperature resistance. The battery cell 6 is connected in series, using a single large-capacity battery cell 6. The battery cell connection plate 8 has collection and overcurrent functions. The battery cells are connected in series, and the battery cells 6 can be charged and discharged through the set socket 4. When the module is packaged, the device adopts an open-mold plastic bracket to prepare it into an internal bracket form, with a front and rear double shell to package the battery cell 6 module. Through the set BMS7, BMS7 can manage the charging and discharging of the battery and related overvoltage, overcurrent, overtemperature and other protection functions. BMS 7 will always pay attention to the voltage of each single cell in the battery pack to prevent overcharging or over-discharging of individual batteries. If the voltage of a battery is too high, BMS7 will adjust the charging strategy in time to avoid dangerous situations. The side of the internal bracket 5 is designed with an assembly position for installing BMS7. The side of BMS7 is protected by an integrated cast aluminum packaging plate, which can effectively transfer the heat of BMS7 to the outer shell for heat dissipation. After the upper cover is assembled with the charging and discharging socket, after the upper cover is assembled with a buffer rubber sleeve, the outer shell is sealed and fixed with screws. The buffer rubber sleeve 10 is set between the lower shell 1 and the upper shell 2, so that the lower shell 1 and the upper shell 2 can be buffered. By starting the water pump 15, the cold water inside the water tank 12 can be drawn into the inside of the circulation pipe 13, and the cold water can absorb the heat inside the lower shell 1, and the water will be discharged to the water tank through the outlet pipe 16 and the connecting pipe 17. 12, by starting the boost pump 18, the pressure at the water outlet end of the connecting pipe 17 can be increased, and the water discharged from the water outlet end of the connecting pipe 17 will pass through the blade 20, and the blade 20 can drive the rotating shaft 19 and the fan blade 21 to rotate. Through the rotation of the fan blade 21, the hot air inside the lower shell 1 can be discharged through the heat dissipation hole 11. Through the above structure, the titanium niobate system battery cell is introduced to effectively solve the charging and discharging problem of the battery pack in cold areas. The integrated design of the PACK structure can effectively solve the use requirements of two-wheeled and three-wheeled electric bicycles, light electric motorcycles, electric motorcycles and other models. The battery cell has high power, long life, low temperature resistance and high safety, which can ensure the user's safety and endurance requirements. At the same time, it can also dissipate the heat of the titanium niobate battery PACK structure to avoid local overheating causing battery performance degradation or even thermal runaway, which greatly facilitates user use.

[0038] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more schemes or examples in a suitable manner.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A titanium niobate battery PACK structure, comprising a lower shell (1), characterized in that: An upper shell (2) is arranged on the top of the lower shell (1), an internal bracket (5) is fixedly installed inside the lower shell (1), a battery cell (6) is fixedly installed inside the internal bracket (5), a battery cell connecting plate (8) is arranged on the top of the internal bracket (5), and the battery cell connecting plate (8) and the battery cell (6) are connected in circuit, a water tank (12) is fixedly installed inside the lower shell (1), a circulating heat dissipation component is arranged inside the lower shell (1), and a plurality of heat dissipation holes (11) distributed at equal distances are opened on one side of the lower shell (1).

2. A titanium niobate battery PACK structure according to claim 1, characterized in that: The interior of the lower shell (1) is of hollow design; the lower shell (1) is formed by integral stamping of sheet metal; and the upper shell (2) is formed by cast aluminum die-casting.

3. A titanium niobate battery PACK structure according to claim 1, characterized in that: A socket (4) is provided on the top of the upper shell (2), and a handle (3) is fixedly connected to the top of the upper shell (2), wherein the handle (3) is made of rubber.

4. A titanium niobate battery PACK structure according to claim 1, characterized in that: The battery core (6) is a soft-package titanium niobate battery core, and a plurality of battery cores (6) are connected in series using a series connection scheme.

5. The titanium niobate battery PACK structure according to claim 1, characterized in that: A BMS (7) is arranged outside the battery cell (6), a packaging plate (9) is arranged outside the BMS (7), and the other side of the packaging plate (9) is mounted on one side of the inner wall of the lower shell (1).

6. The titanium niobate battery PACK structure according to claim 1, characterized in that: A buffer rubber sleeve (10) is provided between the lower shell (1) and the upper shell (2), and the buffer rubber sleeve (10) is made of rubber material.

7. The titanium niobate battery PACK structure according to claim 1, characterized in that: The circulating heat dissipation component comprises a circulating pipe (13) arranged on both sides of the lower shell (1); one end of the circulating pipe (13) is connected to a water inlet pipe (14); the other end of the circulating pipe (13) is connected to a water outlet pipe (16); the water inlet pipe (14) and the water outlet pipe (16) both extend to the interior of the water tank (12).

8. The titanium niobate battery PACK structure according to claim 7, characterized in that: A water pump (15) is arranged outside the water inlet pipe (14); the two water outlet pipes (16) are connected to a same connecting pipe (17); a booster pump (18) is arranged outside the connecting pipe (17); a rotating shaft (19) is rotatably connected to the bottom of the inner wall of the water tank (12); the top of the rotating shaft (19) extends to the top of the water tank (12); four circumferentially distributed fan blades (21) are fixedly connected to the top of the rotating shaft (19); four circumferentially distributed paddle blades (20) are fixedly connected to the outside of the rotating shaft (19); and the water outlet end of the connecting pipe (17) is above the paddle blades (20).

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