High-energy battery rod of extended-range vehicle

Abstract

The utility model provides a high-energy battery rod of an extended-range vehicle. The high-energy battery rod of the range extending vehicle comprises a shell, a positive pole lug is arranged at the bottom of the shell, a sealing sleeve is fixedly connected to the top of the shell in a sleeving mode, a negative pole lug is arranged in the sealing sleeve, and a positioning rod is fixedly connected to the interior of the shell in a sleeving mode. According to the high-energy battery rod of the range-extending vehicle provided by the utility model, the heat dissipation ring is arranged, so that when the battery rod works for a long time and charges and discharges frequently to generate relatively large heat, the heat conduction sheet can absorb the heat in the shell, and then the heat is transferred to the interior of the heat dissipation ring through the heat conduction column; at the moment, the heat dissipation ring can quickly discharge heat to the outside of the shell, so that the effect of discharging the heat in the shell is achieved, namely the effect of quickly discharging the heat in the battery rod is achieved, the problem that the working efficiency is greatly reduced when the temperature of the battery rod is too high is avoided, and the working efficiency of the battery rod is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a high-energy battery stick for a range-extended vehicle. Background Art

[0002] With the development of science and technology, batteries are widely used in new energy vehicles. At present, the pole cores in the batteries on the market are connected in parallel. The specific production method is to insert the positive electrode sheet and the negative electrode sheet on both sides of the diaphragm to form a structure of "diaphragm wrapping the negative electrode, and the negative electrode wrapping the positive electrode". However, the pole core with this structure cannot meet the voltage and capacity requirements in actual use, and the performance of the battery is reduced due to uneven heat distribution, that is, the energy density of the battery is too low. In addition, the current parallel-connected battery cells cannot meet the voltage and capacity requirements in actual use. After the battery is manufactured, a capacity measurement and resistance measurement process is required to determine the capacity and voltage resistance of the battery, and batteries with similar capacity, voltage, and resistance are assembled into a group, and then assembled by the pack process. This prolongs the production cycle of the battery, increases the production cost of the battery, and reduces the utilization rate of the battery cell.

[0003] In the existing technology, such as the "A high energy density battery" with Chinese authorization announcement number: CN218351667U, which includes a pole core, and a positive pole ear and a negative pole ear are respectively formed on both sides of the pole core; when a plurality of the pole cores are stacked and connected, along the stacking direction of the plurality of the pole cores, the positive pole ear of the pole core located at the first end of the battery is formed as the positive pole ear of the battery; the negative pole ear of the pole core located at the second end of the battery is formed as the negative pole ear of the battery; the positive pole ear of the pole core located in the middle part of the battery is connected to the negative pole ear of the pole core adjacent to it, so that the plurality of the pole cores are connected in series along the stacking direction.

[0004] When using batteries in the existing technology, since the inside of the batteries is mostly tightly sealed, frequent charging and discharging of the batteries can easily cause the internal temperature to rise rapidly, which in turn leads to a problem of greatly reduced service life of the batteries when working in a high-temperature environment.

[0005] Therefore, it is necessary to provide a high-energy battery rod for a range-extended vehicle to solve the above-mentioned technical problems. Utility Model Content

[0006] The utility model provides a high-energy battery rod for a range-extended vehicle, which solves the problem that since the interior of the battery is mostly tightly sealed, the internal temperature of the battery is easily increased rapidly when the battery is frequently charged and discharged, thereby greatly reducing the working efficiency of the battery when working in a high-temperature environment.

[0007] To solve the above technical problems, the utility model provides a high-energy battery rod for an extended-range vehicle, comprising a shell, a positive electrode ear is arranged at the bottom of the shell, a closed sleeve is fixedly sleeved on the top of the shell, a negative electrode ear is arranged inside the closed sleeve, a positioning rod is fixedly sleeved inside the shell, a negative electrode sheet is fixedly sleeved outside the positioning rod, an insulating diaphragm is fixedly sleeved outside the negative electrode sheet, a positive electrode sheet is fixedly sleeved outside the insulating diaphragm, a heat conducting sheet is fixedly sleeved outside the shell, an exhaust groove is provided on the top of the heat conducting sheet, a heat conducting column is fixedly connected to the side of the heat conducting sheet, a heat dissipation ring is fixedly sleeved outside the shell, a heat dissipation ring is fixedly sleeved outside the heat dissipation ring, a safety mechanism is arranged inside the closed sleeve, a heat conducting block is movably sleeved inside the shell, and a limiting groove is provided inside the positive electrode ear.

[0008] Preferably, the material of the heat sink is the same as that of the heat conducting sheet, and the material of the heat sink is metallic copper.

[0009] Preferably, the inner wall of the shell is tightly fitted with the outside of the insulating diaphragm, and the shell is made of stainless steel.

[0010] Preferably, the diameter of the positive electrode tab is the same as the diameter of the limiting groove, and the positive electrode tab is adapted to the limiting groove.

[0011] Preferably, the thickness of the insulating diaphragm is smaller than the thickness of the negative electrode sheet, and the insulating diaphragm is made of polyolefin material.

[0012] Preferably, there are a plurality of heat sinks, and the plurality of heat sinks are evenly distributed outside the heat dissipation ring.

[0013] Preferably, the safety mechanism comprises a closing cover, the closing cover is fixedly sleeved inside the closing sleeve, a safety valve is fixedly sleeved inside the closing cover, and a spring is fixedly sleeved inside the safety valve.

[0014] Preferably, the heat conductive block is in close contact with the top of the negative electrode sheet, and the heat conductive block is made of silicone grease material.

[0015] Compared with the related art, the high-energy battery rod for range-extended vehicles provided by the utility model has the following beneficial effects:

[0016] The utility model provides a high-energy battery stick for a range-extended vehicle. By arranging a heat dissipation ring, when the battery stick works for a long time and frequently charges and discharges to generate a large amount of heat, the heat-conducting sheet can absorb the heat inside the shell, and then transfer it to the inside of the heat dissipation ring through the heat-conducting column. At this time, the heat dissipation ring can quickly discharge the heat to the outside of the shell, thereby achieving the effect of discharging the heat inside the shell, that is, achieving the effect of quickly discharging the heat inside the battery stick, so as to avoid the problem of greatly reduced working efficiency when the temperature of the battery stick is too high, thereby greatly improving the working efficiency of the battery stick;

[0017] By setting the limiting groove, when the battery is installed and fixed, the positive electrode ear is sleeved inside the limiting groove. At this time, the limiting groove can limit the position of the positive electrode ear, so that the two battery rods can be stably electrically connected, that is, the series connection effect of the two battery rods is achieved, which brings convenience to the series connection of the batteries, thereby greatly improving the convenience of installing the battery rods;

[0018] By setting up a safety mechanism, when the temperature inside the shell is high, the spring can be deformed, and the top of the spring can be separated from the bottom of the negative electrode ear, so that the current inside the negative electrode ear can be disconnected; when the temperature inside the spring drops, the spring can restore its deformation, so that the spring can contact the bottom of the negative electrode ear, thereby achieving the current path state inside the negative electrode ear, avoiding the problem of explosive combustion when the temperature inside the battery is too high, thereby greatly improving the safety of the battery during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a preferred embodiment of a high-energy battery rod for a range-extended vehicle provided by the utility model;

[0020] Figure 2 for Figure 1 A bottom view of a high-energy battery rod for a range-extended vehicle is shown;

[0021] Figure 3 for Figure 1 An exploded view of a safety mechanism in a high-energy battery rod of a range-extended vehicle is shown;

[0022] Figure 4 for Figure 1 A front view of a heat conductive plate in a high-energy battery rod of a range-extended vehicle is shown.

[0023] Numbers in the figure: 1. Shell; 2. Positive electrode ear; 3. Closing sleeve; 4. Negative electrode ear; 5. Positioning rod; 6. Negative electrode sheet; 7. Insulating diaphragm; 8. Positive electrode sheet; 9. Heat conducting sheet; 10. Exhaust groove; 11. Heat conducting column; 12. Heat dissipation ring; 13. Heat sink; 14. Safety mechanism; 141. Closing cover; 142. Safety valve; 143. Spring piece; 15. Heat conducting block; 16. Limiting groove. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of a high-energy battery rod for a range-extended vehicle provided by the utility model; Figure 2 for Figure 1 A bottom view of a high-energy battery rod for a range-extended vehicle is shown; Figure 3 for Figure 1 An exploded view of a safety mechanism in a high-energy battery rod of a range-extended vehicle is shown; Figure 4 for Figure 1 A front view of a heat conducting sheet in a high-energy battery rod for a range-extended vehicle is shown. A high-energy battery rod for a range-extended vehicle comprises a shell 1, a positive electrode tab 2 is arranged at the bottom of the shell 1, a closed sleeve 3 is fixedly sleeved on the top of the shell 1, a negative electrode tab 4 is arranged inside the closed sleeve 3, a positioning rod 5 is fixedly sleeved inside the shell 1, a negative electrode sheet 6 is fixedly sleeved outside the positioning rod 5, an insulating diaphragm 7 is fixedly sleeved outside the negative electrode sheet 6, a positive electrode sheet 8 is fixedly sleeved outside the insulating diaphragm 7, a heat conducting sheet 9 is fixedly sleeved outside the shell 1, an exhaust groove 10 is provided on the top of the heat conducting sheet 9, a heat conducting column 11 is fixedly connected to the side of the heat conducting sheet 9, a heat dissipation ring 12 is fixedly sleeved outside the shell 1, a heat dissipation ring 12 is fixedly sleeved outside the heat dissipation ring 12, a safety mechanism 14 is arranged inside the closed sleeve 3, a heat conducting block 15 is movably sleeved inside the shell 1, and a limiting groove 16 is provided inside the positive electrode tab 2.

[0026] The material of the heat sink 12 is the same as that of the heat conducting sheet 9, and the material of the heat sink 12 is metallic copper. By providing the heat sink 12, when the battery stick generates a large amount of heat due to long-term operation and frequent charging and discharging, the heat conducting sheet 9 can absorb the heat inside the shell 1, and then transfer it to the inside of the heat sink 12 through the heat conducting column 11. At this time, the heat sink 12 can quickly discharge the heat to the outside of the shell 1, thereby achieving the effect of discharging the heat inside the shell 1, that is, achieving the effect of quickly discharging the heat inside the battery stick, thereby avoiding the problem of greatly reduced working efficiency when the temperature of the battery stick is too high, thereby greatly improving the working efficiency of the battery stick.

[0027] The inner wall of the shell 1 fits tightly with the outside of the insulating diaphragm 7, and the shell 1 is made of stainless steel. By setting the shell 1, when the battery rod is hit or colliding, the shell 1 can protect the components inside it, thereby avoiding the problem of damage to the battery components when being hit, which in turn causes a short circuit in the components, thereby improving the quality of the battery rod when in use.

[0028] The diameter of the positive pole lug 2 is the same as the diameter of the limiting groove 16, and the positive pole lug 2 is adapted to the limiting groove 16; by setting the limiting groove 16, when the battery is installed and fixed, the positive pole lug 2 is sleeved inside the limiting groove 16, and the limiting groove 16 can limit the position of the positive pole lug 2 at this time, so that the two battery rods can be stably electrically connected, that is, the series connection effect of the two battery rods is achieved, thereby facilitating the series connection of the batteries, and thus greatly improving the convenience of installing the battery rods.

[0029] The thickness of the insulating diaphragm 7 is less than the thickness of the negative electrode sheet 6, and the material of the insulating diaphragm 7 is polyolefin material; by providing the insulating diaphragm 7, when the negative electrode sheet 6 and the positive electrode sheet 8 are rolled up, the insulating diaphragm 7 can separate the negative electrode sheet 6 and the positive electrode sheet 8, so that the negative electrode sheet 6 and the positive electrode sheet 8 can maintain a stable state when they are tightly squeezed, thereby avoiding the problem of connection between the negative electrode sheet 6 and the positive electrode sheet 8 when they are tightly fitted, thereby causing a short circuit between the negative electrode sheet 6 and the positive electrode sheet 8, thereby improving the tightness of the negative electrode sheet 6 and the positive electrode sheet 8, that is, increasing the capacity inside the shell 1, thereby greatly improving the storage capacity of the battery rod electric energy.

[0030] There are a plurality of heat sinks 13, which are evenly distributed outside the heat sink 12. By providing the heat sink 13, when there is a lot of heat inside the heat sink 12, the heat sink 13 can absorb the heat inside the heat sink 12 and then discharge it into the air, thereby increasing the cooling speed of the heat sink 12, that is, increasing the heat conduction speed of the heat sink 12.

[0031] The safety mechanism 14 includes a closing cover 141, which is fixedly sleeved inside the closing cover 3, and a safety valve 142 is fixedly sleeved inside the closing cover 141, and a spring 143 is fixedly sleeved inside the safety valve 142; by setting the safety mechanism 14, when the temperature inside the shell 1 is high, the spring 143 is deformed, and at this time, the top of the spring 143 is separated from the bottom of the negative pole ear 4, so that the current inside the negative pole ear 4 can be disconnected, and when the internal temperature of the spring 143 decreases, the spring 143 is able to restore its deformation, so that the spring 143 is able to contact with the bottom of the negative pole ear 4, thereby achieving the current path state inside the negative pole ear 4, so that the problem of explosion when the internal temperature of the battery is too high is avoided, thereby greatly improving the safety of the battery during use.

[0032] The heat conductive block 15 is in close contact with the top of the positive electrode sheet 6, and the material of the heat conductive block 15 is silicone grease material; by providing the heat conductive block 15, when the battery is cooling, the heat conductive block 15 can quickly transfer the heat inside the negative electrode tab 4 and the negative electrode sheet 8 to the inside of the heat conductive sheet 9, thereby increasing the contact area between the heat conductive sheet 9 and the heat, thereby increasing the heat conduction speed of the heat conductive sheet 9.

[0033] The working principle of the high-energy battery stick for range-extended vehicles provided by the utility model is as follows:

[0034] Step 1: First, when the battery stick works for a long time and frequently charges and discharges to generate a large amount of heat, the heat conductive sheet 9 can absorb the heat inside the shell 1, and then transfer it to the heat dissipation ring 12 through the heat conductive column 11. At this time, the heat dissipation ring 12 can quickly discharge the heat to the outside of the shell 1, thereby achieving the heat discharge effect inside the shell 1, that is, achieving the effect of rapid heat discharge inside the battery stick, so as to avoid the problem of greatly reduced working efficiency when the temperature of the battery stick is too high, thereby greatly improving the working efficiency of the battery stick. When the battery stick is hit or collided, the shell 1 can protect the components inside it, so as to avoid damage to the battery components when hit, and then cause the problem of short circuit of the components, thereby improving the quality of the battery stick when in use. When installing and fixing the battery, the positive electrode The pole ear 2 is sleeved inside the limiting groove 16. At this time, the limiting groove 16 can limit the position of the positive pole ear 2, so that the two battery rods can be stably electrically connected, that is, the series connection effect of the two battery rods is achieved, which brings convenience to the series connection of the batteries, thereby greatly improving the convenience of installing the battery rods. When the negative electrode sheet 6 and the positive electrode sheet 8 are rolled up, the insulating diaphragm 7 can separate the negative electrode sheet 6 and the positive electrode sheet 8, so that the negative electrode sheet 6 and the positive electrode sheet 8 can maintain a stable state when they are tightly squeezed, thereby avoiding the problem of connection when the negative electrode sheet 6 and the positive electrode sheet 8 are tightly fitted, thereby causing the negative electrode sheet 6 and the positive electrode sheet 8 to short-circuit, thereby improving the tightness of the negative electrode sheet 6 and the positive electrode sheet 8, that is, increasing the capacity inside the shell 1, thereby greatly improving the storage capacity of the battery rod electric energy;

[0035] Step 2: When the heat inside the heat sink 12 is high, the heat sink 13 can absorb the heat inside the heat sink 12 and then discharge it into the air, thereby increasing the cooling speed of the heat sink 12, that is, increasing the heat conduction speed of the heat sink 12. When the temperature inside the shell 1 is high, the spring 143 can be deformed, and at this time, the top of the spring 143 can be separated from the bottom of the negative electrode tab 4, so that the current inside the negative electrode tab 4 can be disconnected. When the temperature inside the spring 143 decreases, the spring 143 can restore its deformation, so that the spring 143 can contact the bottom of the negative electrode tab 4, thereby achieving the current path state inside the negative electrode tab 4, avoiding the problem of explosion when the internal temperature of the battery is too high, thereby greatly improving the safety of the battery during use. When the battery is cooling, the heat conductive block 15 can quickly transfer the heat inside the negative electrode tab 4 and the negative electrode sheet 8 to the inside of the heat conductive sheet 9, thereby increasing the contact area between the heat conductive sheet 9 and the heat, thereby increasing the heat conduction speed of the heat conductive sheet 9.

[0036] Compared with the related art, the high-energy battery rod for range-extended vehicles provided by the utility model has the following beneficial effects:

[0037] By providing the heat dissipation ring 12, when the battery stick works for a long time and frequently charges and discharges to generate a large amount of heat, the heat conductive sheet 9 can absorb the heat inside the shell 1, and then transfer it to the heat dissipation ring 12 through the heat conductive column 11. At this time, the heat dissipation ring 12 can quickly discharge the heat to the outside of the shell 1, thereby achieving the effect of discharging the heat inside the shell 1, that is, achieving the effect of quickly discharging the heat inside the battery stick, avoiding the problem of greatly reduced working efficiency when the temperature of the battery stick is too high, thereby greatly improving the working efficiency of the battery stick.

[0038] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-energy battery rod for a range-extended vehicle, comprising a housing (1), characterized in that: The bottom of the shell (1) is provided with a positive electrode tab (2), the top of the shell (1) is fixedly sleeved with a sealing sleeve (3), the interior of the sealing sleeve (3) is provided with a negative electrode tab (4), the interior of the shell (1) is fixedly sleeved with a positioning rod (5), the exterior of the positioning rod (5) is fixedly sleeved with a negative electrode sheet (6), the exterior of the negative electrode sheet (6) is fixedly sleeved with an insulating diaphragm (7), the exterior of the insulating diaphragm (7) is fixedly sleeved with a positive electrode sheet (8), the exterior of the shell (1) is fixedly sleeved with a positioning rod (5), the exterior of the positioning rod (5) is fixedly sleeved with a positioning rod (5), the exterior of the negative electrode sheet (6) is fixedly sleeved with an insulating diaphragm (7), the exterior of the insulating diaphragm (7) is fixedly sleeved with a positive electrode sheet (8), and the exterior of the shell (1) is fixedly sleeved with a positioning rod (5). A heat conducting sheet (9) is connected, an exhaust groove (10) is provided on the top of the heat conducting sheet (9), a heat conducting column (11) is fixedly connected to the side of the heat conducting sheet (9), a heat dissipation ring (12) is fixedly sleeved on the outside of the shell (1), a heat dissipation sheet (13) is fixedly sleeved on the outside of the heat dissipation ring (12), a safety mechanism (14) is arranged inside the sealing sleeve (3), a heat conducting block (15) is movably sleeved inside the shell (1), and a limiting groove (16) is provided inside the positive electrode ear (2).

2. A high-energy battery rod for a range-extended vehicle according to claim 1, characterized in that: The material of the heat dissipation ring (12) is the same as that of the heat conducting sheet (9), and the material of the heat dissipation ring (12) is a metallic copper material.

3. A high-energy battery rod for a range-extended vehicle according to claim 1, characterized in that: The inner wall of the shell (1) is tightly fitted to the outside of the insulating diaphragm (7), and the shell (1) is made of stainless steel.

4. A high-energy battery rod for a range-extended vehicle according to claim 1, characterized in that: The diameter value of the positive electrode tab (2) is the same as the diameter value of the limiting groove (16), and the positive electrode tab (2) is compatible with the limiting groove (16).

5. The high-energy battery rod for a range-extended vehicle according to claim 1, characterized in that: The thickness of the insulating diaphragm (7) is less than the thickness of the negative electrode sheet (6), and the insulating diaphragm (7) is made of polyolefin material.

6. A high-energy battery rod for a range-extended vehicle according to claim 1, characterized in that: The number of the heat sinks (13) is a plurality, and the plurality of heat sinks (13) are evenly distributed outside the heat sink ring (12).

7. A high-energy battery rod for a range-extended vehicle according to claim 1, characterized in that: The safety mechanism (14) comprises a sealing cover (141), the sealing cover (141) is fixedly sleeved inside the sealing sleeve (3), a safety valve (142) is fixedly sleeved inside the sealing cover (141), and a spring sheet (143) is fixedly sleeved inside the safety valve (142).

8. The high-energy battery rod for a range-extended vehicle according to claim 1, characterized in that: The heat conducting block (15) is in close contact with the top of the negative electrode sheet (6), and the material of the heat conducting block (15) is silicone grease material.

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