Rechargeable battery

Abstract

The utility model discloses a rechargeable battery, relates to the field of energy storage equipment, and can solve the problem that a fuse of a rechargeable battery in the prior art is difficult to replace. The rechargeable battery comprises a battery shell, a battery module connected in the battery shell and used for storing electric energy, a battery management module connected in the battery shell and electrically connected with the battery module, and a charging assembly connected to the battery shell and electrically connected with the battery management module, the charging assembly is used for being electrically connected with a charging source or a to-be-charged device, a fuse is connected between the charging assembly and the battery management module, an installation groove for containing the fuse is formed in the outer wall of the battery shell, and the outer wall of the battery shell is detachably connected with a cover plate for sealing the installation groove.

Description

Technical Field

[0001] The present application relates to the field of energy storage devices, and in particular to a rechargeable battery. Background Art

[0002] Rechargeable batteries are a type of energy storage device that is widely used at present. Common rechargeable batteries include lead-acid batteries, lithium-ion batteries, and sodium-ion batteries. Lead-acid batteries are widely used in automobile starting, electric bicycles, backup power supplies, etc. due to their low cost and mature manufacturing process. However, lead-acid batteries have problems such as low energy density, short cycle life, and high environmental pollution. Lithium-ion batteries have the advantages of high energy density, long cycle life, and low self-discharge rate. They are widely used in consumer electronics, electric vehicles, and energy storage systems, but lithium-ion batteries have poor charging performance in low temperature environments and are relatively expensive. As an emerging battery technology, sodium-ion batteries have low cost, high safety, and good low-temperature performance, and are expected to play an important role in the fields of energy storage and electric transportation.

[0003] In the prior art, the fuses of existing rechargeable batteries on the market are generally built-in and require the removal of the upper cover to be replaced. Since the upper cover is usually sealed with waterproof glue, it is very difficult to remove the upper cover, which brings inconvenience to users and increases the time and economic cost of maintenance. Especially in an emergency, the operation of replacing the fuse is cumbersome and time-consuming, affecting the normal use and safety of the battery. Utility Model Content

[0004] To this end, the present application provides a rechargeable battery to solve the problem that the fuse of the rechargeable battery in the prior art is difficult to replace.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A rechargeable battery comprises a battery shell, a battery module connected to the battery shell and used to store electric energy, a battery management module connected to the battery shell and electrically connected to the battery module, and a charging component connected to the battery shell and electrically connected to the battery management module, wherein the charging component is used to be electrically connected to a charging source or a device to be charged, a fuse is connected between the charging component and the battery management module, an outer wall of the battery shell is formed with a mounting groove for accommodating the fuse, and a cover plate for closing the mounting groove is detachably connected to the outer wall of the battery shell.

[0007] Optionally, the charging assembly includes a positive conductive plate connected to the inner wall of the battery shell and electrically connected to the battery management module, a negative conductive plate connected to the inner wall of the battery shell and electrically connected to the battery management module, a positive pole connected to the positive conductive plate and one end extending to the outer wall of the battery shell, and a negative pole connected to the negative conductive plate and one end extending to the outer wall of the battery shell, and the fuse is connected to one end of the positive conductive plate away from the positive pole.

[0008] Optionally, both ends of the fuse are connected to conductive columns via fasteners, one conductive column is connected to the positive conductive plate, and the other conductive column is connected to the battery management module via a wire, the two ends of the conductive column are respectively located in the mounting groove and the battery shell, the cover plate is connected to the outer wall of the battery shell via a plurality of fasteners, and a waterproof pad is arranged between the cover plate and the outer wall of the battery shell.

[0009] Optionally, the positive conductive plate is also connected to a positive screw pole with one end extending to the outer wall of the battery shell, and the negative conductive plate is also connected to a negative screw pole with one end extending to the outer wall of the battery shell.

[0010] Optionally, the battery shell includes a lower shell and an upper shell connected to the lower shell, the end surface of the lower shell is provided with a sealing groove for accommodating sealant, the end surface of the upper shell is connected to a sealing strip for matching the sealing groove, and the mounting groove is integrally formed on the upper shell.

[0011] Optionally, the outer wall of the upper shell is connected to a power indicator sticker for electrically connecting to the battery module, and the outer wall of the upper shell is also rotatably connected to a handle.

[0012] Optionally, the battery module includes two fixed plates connected to the inner wall of the battery shell and arranged opposite to each other, and a plurality of battery cells connected between the two fixed plates and used to store electrical energy, the fixed plates are provided with a plurality of accommodating holes for embedding the ends of the battery cells, the plurality of accommodating holes correspond one-to-one to the plurality of battery cells, a plurality of electric plates contacting and connected to the electrodes of the battery cells are connected to the side of the fixed plates away from the battery cells, the electric plates are electrically connected to the battery management module, and two adjacent battery cells are arranged at intervals; a plurality of limit rods for constraining the relative positions of the two fixed plates are detachably connected between the two fixed plates.

[0013] Optionally, an insulating plate is detachably connected to a side of the fixing plate away from the battery cell, the battery plate is located between the insulating plate and the fixing plate, and a connecting plate is detachably connected to a side of the insulating plate away from the battery plate, and the connecting plate is connected to the inner wall of the battery shell via fasteners.

[0014] Optionally, the battery cell is a sodium ion battery cell.

[0015] Optionally, the insulating board is an epoxy resin board.

[0016] Compared with the prior art, this application has at least the following beneficial effects:

[0017] When the fuse needs to be replaced, the user only needs to open the cover on the outer wall of the battery shell, take out the old fuse from the installation slot, and insert a new fuse. Compared with the prior art, there is no need to remove the upper cover of the battery, which simplifies the fuse replacement process and avoids the problems of sealing failure and degradation of waterproof performance caused by removing the upper cover in traditional designs, thereby improving the maintenance convenience of rechargeable batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more intuitively illustrate the prior art and the present application, several exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, those skilled in the art are capable of easily making conventional adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components) based on the technical concepts and exemplary drawings disclosed in the present application.

[0019] Figure 1 A schematic diagram of the overall structure of a rechargeable battery provided in one embodiment of the present application;

[0020] Figure 2 A schematic diagram of an exploded structure of a cover portion of a rechargeable battery provided in one embodiment of the present application;

[0021] Figure 3 An exploded schematic diagram of an upper shell and a lower shell of a rechargeable battery provided by one embodiment of the present application;

[0022] Figure 4 A schematic diagram of a partial structure of a charging assembly of a rechargeable battery provided in one embodiment of the present application;

[0023] Figure 5 A schematic structural diagram of a lower housing, a battery module and a battery management module of a rechargeable battery provided in one embodiment of the present application;

[0024] Figure 6 for Figure 5 A partial explosion diagram of

[0025] Figure 7 A schematic diagram of the structure of a battery module of a rechargeable battery provided in one embodiment of the present application;

[0026] Figure 8 for Figure 7Exploded diagram of some structures;

[0027] Fig. 9 for Figure 8 Exploded diagram of some structures;

[0028] Fig.10 for Fig. 9 Exploded diagram of part of the structure.

[0029] Description of reference numerals:

[0030] 1. Battery shell; 11. Lower shell; 111. Sealing groove; 12. Upper shell; 121. Sealing strip; 13. Mounting groove; 14. Cover plate; 141. Waterproof pad; 2. Battery module; 21. Battery cell; 22. Fixing plate; 221. Receiving hole; 222. Limiting rod; 23. Electric board; 24. Insulating plate; 25. Connecting plate; 3. Battery management module; 4. Charging assembly; 41. Positive conductive plate; 411. Positive pole; 412. Positive screw pole; 42. Negative conductive plate; 421. Negative pole; 422. Negative screw pole; 5. Power indicator sticker; 6. Fuse; 61. Conductive pole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] In the description of this application: unless otherwise specified, "plurality" means two or more. "Including", "comprising", "having" and other expressions also mean "not limited to" (certain units, components, materials, steps, etc.).

[0033] refer to Figure 1-3 The present application discloses a rechargeable battery, comprising a battery shell 1, a battery module 2 connected to the battery shell 1 and used to store electric energy, a battery management module 3 (BMS) connected to the battery shell 1 and electrically connected to the battery module 2, and a charging component 4 connected to the battery shell 1 and electrically connected to the battery management module 3, wherein the charging component 4 is used to be electrically connected to a charging source or a device to be charged, a fuse 6 is connected between the charging component 4 and the battery management module 3, an outer wall of the battery shell 1 is formed with a mounting groove 13 for accommodating the fuse 6, and a cover plate 14 for closing the mounting groove 13 is detachably connected to the outer wall of the battery shell 1.

[0034] When the fuse 6 needs to be replaced, the user only needs to open the cover plate 14 on the outer wall of the battery shell 1, take out the old fuse 6 from the installation slot 13, and insert a new fuse 6. Compared with the prior art, there is no need to remove the upper cover of the battery, which simplifies the replacement process of the fuse 6, avoids the problems of sealing failure and reduced waterproof performance caused by removing the upper cover in the traditional design, and improves the convenience of maintenance of the rechargeable battery.

[0035] The charging source can charge the battery module 2 through the charging component 4, and the battery module 2 can also supply power to the device to be charged through the charging component 4.

[0036] refer to Figure 1-4 The charging assembly 4 includes a positive conductive plate 4123 connected to the inner wall of the battery shell 1 and electrically connected to the battery management module 3, a negative conductive plate 4223 connected to the inner wall of the battery shell 1 and electrically connected to the battery management module 3, a positive pole 411 connected to the positive conductive plate 4123 and one end extending to the outer wall of the battery shell 1, and a negative pole 421 connected to the negative conductive plate 4223 and one end extending to the outer wall of the battery shell 1. The fuse 6 is connected to one end of the positive conductive plate 4123 away from the positive pole 411.

[0037] The positive pole 411 and the negative pole 421 in the charging assembly 4 are connected to the positive conductive plate 4123 and the negative conductive plate 4223 respectively, and the user realizes charging and discharging through the positive pole 411 and the negative pole 421. Among them, when the current passes through, the battery management module 3 controls and protects the charging and discharging of the battery to ensure the safety and efficient operation of the battery. The fuse 6 is connected to the end of the positive conductive plate 4123 away from the positive pole 411, which is used to protect the battery in the case of overcurrent and prevent circuit damage.

[0038] The battery management module 3 is a prior art and will not be described in detail in this application.

[0039] The two ends of the fuse 6 are respectively connected to conductive columns 61 through fasteners, one conductive column 61 is connected to the positive conductive plate 4123, and the other conductive column 61 is connected to the battery management module 3 through a wire. The two ends of the conductive column 61 are respectively located in the mounting groove 13 and the battery shell 1, and the cover plate 14 is connected to the outer wall of the battery shell 1 through multiple fasteners, and a waterproof pad 141 is arranged between the cover plate 14 and the outer wall of the battery shell 1.

[0040] The two ends of the fuse 6 are connected to the conductive posts 61 through fasteners, which are fixed by fasteners (which can be bolts) to ensure stable connection. When disassembling, the fasteners can be removed to remove the fuse 6 from the conductive posts 61. The cover plate 14 is connected to the outer wall of the battery case 1 through multiple fasteners, and a waterproof pad 141 is provided to ensure that the cover plate 14 can seal the mounting groove 13.

[0041] The positive electrode conductive plate 4123 is also connected to a positive electrode screw pole 412 having one end extending to the outer wall of the battery shell 1, and the negative electrode conductive plate 4223 is also connected to a negative electrode screw pole 422 having one end extending to the outer wall of the battery shell 1. The positive electrode screw pole 412 and the negative electrode screw pole 422 can provide another charging and discharging connection method, allowing the user to conveniently perform battery charging and discharging operations through the screw poles, providing an additional connection method, and increasing the flexibility and convenience of battery use.

[0042] The battery shell 1 includes a lower shell 11 and an upper shell 12 connected to the lower shell 11. The end surface of the lower shell 11 is provided with a sealing groove 111 for accommodating sealant. The end surface of the upper shell 12 is connected with a sealing strip 121 for matching the sealing groove 111. The mounting groove 13 is integrally formed on the upper shell 12.

[0043] When the battery case 1 is assembled and connected, the sealant is first injected into the sealing groove 111 of the lower shell 11, and then the upper shell 12 is connected to the lower shell 11, and the sealing strip 121 is inserted into the sealing groove 111. Through the extrusion of the sealing strip 121, the sealant is evenly distributed throughout the sealing groove 111, thereby forming an effective seal and avoiding the problem of water leakage caused by uneven sealing.

[0044] The outer wall of the upper shell 12 is connected with a power indicator sticker 5 for electrically connecting to the battery module 2, and the outer wall of the upper shell 12 is also rotatably connected with a handle. The power indicator sticker 5 can display the remaining power of the battery in real time, so that the user can understand the power status of the battery at any time, conveniently charge in time, and avoid interruption of use due to insufficient power. The handle is designed on the outer wall of the upper shell 12, and through the rotation connection, the user can easily lift and move the battery.

[0045] refer to Figure 6-10 The battery module 2 includes two fixing plates 22 connected to the inner wall of the battery shell 1 and arranged opposite to each other, and a plurality of battery cells 21 connected between the two fixing plates 22 and used for storing electric energy. The fixing plates 22 are provided with a plurality of accommodating holes 221 for embedding the ends of the battery cells 21. The plurality of accommodating holes 221 correspond one to one with the plurality of battery cells 21. A plurality of electric plates 23 in contact with the electrodes of the battery cells 21 are connected to the side of the fixing plates 22 away from the battery cells 21. The electric plates 23 are electrically connected to the battery management module 3. Two adjacent battery cells 21 are arranged at intervals. A plurality of limiting rods 222 for constraining the relative positions of the two fixing plates 22 are detachably connected between the two fixing plates 22.

[0046] Multiple battery cells 21 are fixed in the battery case 1 by the fixing plate 22, so that the battery cells 21 remain stable during battery operation and will not shift due to vibration or impact. Secondly, two adjacent battery cells 21 are arranged at intervals, providing sufficient space for the battery cells 21 to dissipate heat, effectively avoiding performance degradation or damage of the battery cells 21 due to overheating.

[0047] The circuit connection relationship between the multiple battery cells 21, the electric board 23 and the battery management module 3 is a prior art, and will not be described in detail in this application. Among them, there can be multiple electric boards 23.

[0048] The side of the fixing plate 22 away from the battery cell 21 is detachably connected to an insulating plate 24, the electric plate 23 is located between the insulating plate 24 and the fixing plate 22, and the side of the insulating plate 24 away from the electric plate 23 is detachably connected to a connecting plate 25, which is connected to the inner wall of the battery shell 1 through fasteners.

[0049] The electric board 23 is installed between the insulating plate 24 and the fixed plate 22. The insulating plate 24 is used to isolate the electric board 23 to prevent the electric board 23 from making electrical contact with other components, thereby improving the safety of the system; the connecting plate 25 stably connects the entire fixed plate 22 and multiple battery cells 21 to the battery shell 1 to prevent the battery cells 21 from loosening or shifting.

[0050] In addition, the “electrical connection” involved in the rechargeable battery of the present application is generally electrically connected to the electric plate 23 through a wire (not shown in the figure).

[0051] The battery cell 21 is a sodium ion battery cell 21. The sodium ion battery cell 21 has low cost, high safety and good low temperature performance.

[0052] The insulating plate 24 is an epoxy resin plate.

[0053] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0054] The above is a relatively specific and detailed description of the present application through general description and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not deviate from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. A rechargeable battery, characterized in that: It includes a battery shell, a battery module connected to the battery shell and used for storing electric energy, a battery management module connected to the battery shell and electrically connected to the battery module, and a charging component connected to the battery shell and electrically connected to the battery management module, the charging component is used to be electrically connected to a charging source or a device to be charged, a fuse is connected between the charging component and the battery management module, an outer wall of the battery shell is formed with a mounting groove for accommodating the fuse, and the outer wall of the battery shell is detachably connected to a cover plate for closing the mounting groove.

2. The rechargeable battery according to claim 1, characterized in that: The charging assembly includes a positive conductive plate connected to the inner wall of the battery shell and electrically connected to the battery management module, a negative conductive plate connected to the inner wall of the battery shell and electrically connected to the battery management module, a positive pole connected to the positive conductive plate and one end extending to the outer wall of the battery shell, and a negative pole connected to the negative conductive plate and one end extending to the outer wall of the battery shell. The fuse is connected to one end of the positive conductive plate away from the positive pole.

3. The rechargeable battery according to claim 2, characterized in that: Both ends of the fuse are connected to conductive posts via fasteners, one conductive post is connected to the positive conductive plate, and the other conductive post is connected to the battery management module via a wire, both ends of the conductive post are located in the mounting groove and the battery shell, respectively, the cover plate is connected to the outer wall of the battery shell via a plurality of fasteners, and a waterproof pad is provided between the cover plate and the outer wall of the battery shell.

4. The rechargeable battery according to claim 2, characterized in that: The positive conductive plate is also connected to a positive screw pole with one end extending out of the outer wall of the battery shell, and the negative conductive plate is also connected to a negative screw pole with one end extending out of the outer wall of the battery shell.

5. The rechargeable battery according to claim 1, characterized in that: The battery shell includes a lower shell and an upper shell connected to the lower shell, the end surface of the lower shell is provided with a sealing groove for accommodating sealant, the end surface of the upper shell is connected to a sealing strip for matching the sealing groove, and the mounting groove is integrally formed on the upper shell.

6. The rechargeable battery according to claim 5, characterized in that: The outer wall of the upper shell is connected with a power display sticker for being electrically connected to the battery module, and the outer wall of the upper shell is also rotatably connected with a handle.

7. The rechargeable battery according to claim 1, characterized in that: The battery module includes two fixing plates connected to the inner wall of the battery shell and arranged opposite to each other, and a plurality of battery cells connected between the two fixing plates and used for storing electric energy. The fixing plates are provided with a plurality of accommodating holes for embedding the ends of the battery cells, and the plurality of accommodating holes correspond one to one with the plurality of battery cells. A plurality of electric plates contacting and connected to the electrodes of the battery cells are connected to the side of the fixing plates away from the battery cells, and the electric plates are electrically connected to the battery management module, and two adjacent battery cells are arranged at intervals. A plurality of limit rods for constraining the relative positions of the two fixing plates are detachably connected between the two fixing plates.

8. The rechargeable battery according to claim 7, characterized in that: An insulating plate is detachably connected to one side of the fixing plate away from the battery core, the battery plate is located between the insulating plate and the fixing plate, and a connecting plate is detachably connected to one side of the insulating plate away from the battery plate, and the connecting plate is connected to the inner wall of the battery shell via fasteners.

9. The rechargeable battery according to claim 7, characterized in that: The battery cell is a sodium ion battery cell.

10. The rechargeable battery according to claim 8, characterized in that: The insulating board is an epoxy resin board.

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