Modularly assembled storage battery combination structure

Abstract

The utility model discloses a modularly assembled storage battery combination structure, which relates to the technical field of storage batteries and comprises a shell, and a battery cell is sleeved on the inner wall of the shell; the shell comprises a silicon carbide shell body, one side of the silicon carbide shell body is fixedly connected with two groups of raised lines, the other side of the silicon carbide shell body is fixedly connected with two groups of connecting grooves, the top end of each group of raised lines is fixedly connected with a group of baffles, and the inner wall of the silicon carbide shell body is fixedly sleeved with a quartz glass fiber layer. According to the utility model, the quartz glass fiber layer and the silicon carbide shell are sleeved on the outer wall of each battery cell, so that the battery cells are not easy to damage when the storage battery pack is collided in the use process, and the battery cells are not easy to damage if the battery cells are damaged and spontaneously combusted due to self-aging after being used for a long time. The silicon carbide shell and the quartz glass fiber can bear high temperature, so that the adjacent battery cells are prevented from being ignited.

Description

Technical Field

[0001] The utility model relates to the technical field of storage batteries, in particular to a modularly assembled storage battery combination structure. The storage battery is a lithium battery or a sodium battery. Background Art

[0002] A battery combination structure refers to combining multiple battery cells in a specific manner to form a complete battery system. The design goal of this combination structure is to meet the requirements of energy density, voltage, capacity, safety and life in specific application scenarios. In the current battery combination structure design, although there has been a certain modularization concept, the degree of modularization is not high, the combination flexibility is insufficient and the assembly efficiency is low. The traditional battery combination structure usually adopts a fixed layout shell. This design limits the adjustability of the number of battery cells, making it difficult for the entire battery system to meet a variety of different usage requirements.

[0003] An existing patent (publication number: CN221262619U) discloses a modularly assembled lithium battery combination structure, comprising: a plurality of assembly parts, which are arranged to be connected in sequence to form a desired battery pack size and shape; a plurality of battery cells, respectively mounted on the plurality of assembly parts; the assembly parts comprising: two outer shells, respectively mounted on the top and bottom of the battery cells, the two outer shells adjusting the spacing through an adjustment part to adapt to and fix battery cells of different sizes. By adopting a modular design, users can flexibly assemble battery packs of different sizes and shapes according to actual needs, the spacing between the outer shells can be conveniently adjusted to adapt to battery cells of different sizes, and the battery cells on adjacent assembly parts can be smoothly connected when combined and connected to form a battery pack circuit, further simplifying the circuit connection inside the battery pack.

[0004] However, the above technical solution still has certain defects. In the above technical solution, multiple battery cells are almost exposed. During the use of the battery cells, if the battery cells are damaged by external force collision or other factors, the damaged battery cells are prone to expansion, breakage, combustion and heat, which may cause the adjacent battery cells to be ignited, causing damage to the entire battery pack. For this reason, a modular assembled battery combination structure is proposed. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a modular assembled battery combination structure to solve the technical problems raised in the above background.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a modularly assembled battery assembly structure, comprising a shell, wherein the inner wall of the shell is provided with a battery cell;

[0007] The shell includes a silicon carbide shell, one side of the silicon carbide shell is fixedly connected to two groups of convex strips, the other side of the silicon carbide shell is fixedly connected to two groups of connecting grooves, the top of each group of the convex strips is fixedly connected to a group of baffles, the inner wall of the silicon carbide shell is fixedly sleeved with a quartz glass fiber layer, the bottom end of the inner wall of the silicon carbide shell is fixedly connected to a lower end electrode, the side wall of the silicon carbide shell is fixedly connected to two groups of lower conductive sheets near the bottom end, the two groups of conductive sheets are respectively located next to the convex strips and the connecting grooves, one end of the battery cell abuts against the top of the lower end electrode, the side wall of the silicon carbide shell is fixedly connected to two groups of upper conductive sheets near the top end, the two groups of upper conductive sheets are respectively located next to the convex strips and the connecting grooves.

[0008] As an optimal technical solution for a modularly assembled battery combination structure of the present invention, multiple groups of first fuses are fixedly sleeved inside the bottom side wall of the silicon carbide shell, one end of the multiple groups of first fuses is fixedly connected to the bottom end of the lower electrode, and the other ends of the multiple groups of first fuses are respectively fixedly connected to the side walls of the two groups of lower conductive plates.

[0009] As a preferred technical solution for a modularly assembled battery combination structure of the present invention, the top end of the silicon carbide shell is threadedly connected to a top cover, and the top cover includes a cover plate, and the cover plate is threadedly connected to the top end of the silicon carbide shell.

[0010] As an optimal technical solution for a modularly assembled battery combination structure of the present invention, the outer wall of the cover plate is fixedly connected to a metal ring, the bottom end of the cover plate is fixedly connected to a metal spring, and the bottom end of the metal spring is fixedly connected to an upper electrode.

[0011] As an optimal technical solution for a modularly assembled battery combination structure of the present invention, multiple groups of second fuses are fixedly sleeved inside the top side wall of the cover plate, one end of the multiple groups of second fuses is fixedly connected to the top of the metal spring sheet, and the other end of the multiple groups of second fuses is fixedly connected to the side wall of the inner wall of the metal ring.

[0012] As an optimal technical solution for a modularly assembled battery combination structure of the present invention, multiple groups of pressure relief ports are provided through the bottom end of the cover plate, a sealing ring is provided at the top end of the cover plate, the sealing ring is fitted on the top end of the multiple groups of pressure relief ports, and a pressure cap is threadedly connected to the top end of the cover plate.

[0013] As a preferred technical solution of a modularly assembled battery combination structure of the present invention, the top end of the sealing ring is fixedly connected to a pressure spring, and the top end of the pressure spring abuts against the bottom end of the gland.

[0014] In summary, the present invention has the following beneficial effects:

[0015] 1. The utility model sets a quartz glass fiber layer and a silicon carbide shell on the outer wall of each battery cell, so that the battery cell is not easily damaged when the battery pack is hit during use. Moreover, if the battery cell is damaged or spontaneously combusts due to aging after long-term use, the silicon carbide shell and quartz glass fiber can withstand high temperatures to prevent the adjacent battery cells from being ignited.

[0016] 2. The utility model uses hydraulic ports and sealing rings to keep the battery cells in a closed environment during normal use, thus preventing the entry of moisture. When the battery cells burn, the pressure inside the silicon carbide shell can be released in a direction through the pressure relief port to avoid explosion. In addition, the directional release of pressure can prevent high-temperature airflow from impacting the adjacent battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the combined state of the utility model;

[0018] Figure 2 This is a schematic diagram of the top structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the silicon carbide shell of the present utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the top cover of the present utility model;

[0021] Figure 5 This is an enlarged structural diagram of point A of the present invention.

[0022] In the figure: 1. Housing; 2. Top cover; 3. Battery cell;

[0023] 101, silicon carbide shell; 102, rib; 103, connection groove; 104, baffle; 105, quartz glass fiber layer; 106, lower electrode; 107, first fuse; 108, lower conductive sheet; 109, upper conductive sheet;

[0024] 201. Cover plate; 202. Metal ring; 203. Second fuse; 204. Metal spring; 205. Upper electrode; 206. Pressure relief port; 207. Sealing ring; 208. Pressure spring; 209. Pressure cover. DETAILED DESCRIPTION

[0025] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] The following describes an embodiment of the present invention based on its overall structure.

[0027] A modular assembled battery combination structure, such as Figures 1 to 5 As shown, it includes a shell 1, and the inner wall of the shell 1 is provided with a battery core 3;

[0028] The housing 1 includes a silicon carbide shell 101, one side of the silicon carbide shell 101 is fixedly connected to two groups of ridges 102, the other side of the silicon carbide shell 101 is fixedly connected to two groups of connecting grooves 103, the top of each group of ridges 102 is fixedly connected to a group of baffles 104, the inner wall of the silicon carbide shell 101 is fixedly sleeved with a quartz glass fiber layer 105, the bottom end of the inner wall of the silicon carbide shell 101 is fixedly connected to a lower end electrode 106, and the side wall of the silicon carbide shell 101 is fixedly connected to two groups of lower conductive sheets 108 near the bottom end, and the two groups of conductive sheets are respectively located on the ridges 10 2 and the connecting groove 103, one end of the battery cell 3 abuts the top of the lower electrode 106, two groups of upper conductive plates 109 are fixedly connected to the side wall of the silicon carbide shell 101 near the top, and the two groups of upper conductive plates 109 are respectively located next to the protrusion 102 and the connecting groove 103, and multiple groups of first fuses 107 are fixedly sleeved inside the bottom side wall of the silicon carbide shell 101, one end of the multiple groups of first fuses 107 is fixedly connected to the bottom end of the lower electrode 106, and the other ends of the multiple groups of first fuses 107 are respectively fixedly connected to the side walls of the two groups of lower conductive plates 108.

[0029] The silicon carbide shell 101 can be used at a high temperature of two thousand degrees and can play an impact-resistant role, so that the battery cells 3 are not easily damaged when the battery pack is hit. During use, the ridges 102 on one group of silicon carbide shells 101 are slid into the connecting grooves 103 on the other group of silicon carbide shells 101, so that the upper conductive plates 109 and the lower conductive plates 108 on the two groups of silicon carbide shells 101 are in contact, so that the two groups of battery cells 3 are connected in parallel. When the battery cells 3 spontaneously combust, the high temperature will cause the first fuse 107 and the second fuse 203 to be melted, thereby disconnecting this group of battery cells 3 from the adjacent battery cells 3, reducing the impact on other battery cells 3.

[0030] Please refer to Figure 4 and Figure 5The top of the silicon carbide shell 101 is threadedly connected to the top cover 2, and the top cover 2 includes a cover plate 201, which is threadedly connected to the top of the silicon carbide shell 101. The outer wall of the cover plate 201 is fixedly connected to a metal ring 202, and the bottom end of the cover plate 201 is fixedly connected to a metal spring 204. The bottom end of the metal spring 204 is fixedly connected to the upper end electrode 205. The top side wall of the cover plate 201 is fixedly sleeved with multiple groups of second fuses 203. One end of the multiple groups of second fuses 203 is fixedly connected to the metal ring 202. The top of the spring 204 is connected to the other end of the multiple sets of second fuses 203, which are fixedly connected to the side wall of the inner wall of the metal ring 202. The bottom end of the cover plate 201 is penetrated by multiple sets of pressure relief ports 206. The top of the cover plate 201 is provided with a sealing ring 207, which fits on the top of the multiple sets of pressure relief ports 206. The top of the cover plate 201 is threadedly connected to a pressure cap 209. The top of the sealing ring 207 is fixedly connected to a pressure spring 208, and the top of the pressure spring 208 abuts against the bottom end of the pressure cap 209.

[0031] During the combustion of the battery cell 3, a high-pressure and high-temperature environment appears inside the silicon carbide shell 101. At this time, the sealing ring 207 is pushed by the high-temperature and high-pressure gas, causing the sealing ring 207 to compress the pressure spring 208, so that the sealing ring 207 no longer fits on the pressure relief port 206. Then, these high-temperature and high-pressure gases are directionally discharged through the pressure relief port 206, avoiding the high-temperature and high-pressure gases from being sprayed onto other battery cells 3. During the assembly process, the positive and negative electrodes of the battery cell 3 are placed downwardly into the silicon carbide shell 101, so that the negative electrode of the battery cell 3 contacts the lower electrode 106, and then the screw thread is used to tighten the screw thread. , so that the cover plate 201 is connected to the silicon carbide shell 101. At this time, the upper electrode 205 abuts against the positive electrode of the battery cell 3, and the metal spring 204 is compressed, so that the upper electrode 205 and the lower electrode 106 are in close enough contact with the positive and negative electrodes of the battery cell 3. Then the sealing ring 207 and the pressure spring 208 are placed on the top of the cover plate 201 in turn, and then the pressure cover 209 is screwed to the top of the cover plate 201, so that the pressure cover 209 compresses the pressure spring 208, so that the rebound force of the pressure spring 208 pushes the sealing ring 207 to fit on the pressure relief port 206.

[0032] During use, by sheathing the outer wall of each battery cell 3 with a quartz glass fiber layer 105 and a silicon carbide shell 101, the battery cell 3 is not easily damaged when the battery pack is hit during use. Moreover, after long-term use, if the battery cell 3 is damaged or spontaneously combusts due to aging, the silicon carbide shell 101 and the quartz glass fiber can withstand higher temperatures to prevent the adjacent battery cells 3 from being ignited. The parts not involved in the device are the same as the existing technology or can be implemented using the existing technology.

[0033] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A modular battery assembly structure, comprising a housing (1), characterized in that: The inner wall of the housing (1) is provided with a battery core (3); The housing (1) comprises a silicon carbide shell (101), one side of the silicon carbide shell (101) is fixedly connected to two groups of ridges (102), the other side of the silicon carbide shell (101) is fixedly connected to two groups of connection grooves (103), the top of each group of ridges (102) is fixedly connected to a group of baffles (104), the inner wall of the silicon carbide shell (101) is fixedly sleeved with a quartz glass fiber layer (105), and the bottom end of the inner wall of the silicon carbide shell (101) is fixedly connected to a lower end electrode ( 106), two groups of lower conductive sheets (108) are fixedly connected to the side wall of the silicon carbide shell (101) near the bottom end, and the two groups of conductive sheets are respectively located next to the convex strip (102) and the connecting groove (103), one end of the battery cell (3) is in contact with the top end of the lower electrode (106), and two groups of upper conductive sheets (109) are fixedly connected to the side wall of the silicon carbide shell (101) near the top end, and the two groups of upper conductive sheets (109) are respectively located next to the convex strip (102) and the connecting groove (103).

2. The modular battery assembly structure according to claim 1, characterized in that: A plurality of first fuses (107) are fixedly sleeved inside the side wall of the bottom end of the silicon carbide shell (101), one end of each of the plurality of first fuses (107) is fixedly connected to the bottom end of the lower electrode (106), and the other end of each of the plurality of first fuses (107) is fixedly connected to the side walls of the two groups of lower conductive plates (108).

3. The modular battery assembly structure according to claim 1, characterized in that: The top end of the silicon carbide shell (101) is threadedly connected to a top cover (2), and the top cover (2) comprises a cover plate (201), and the cover plate (201) is threadedly connected to the top end of the silicon carbide shell (101).

4. The modular battery assembly structure according to claim 3, characterized in that: The outer wall of the cover plate (201) is fixedly connected to a metal ring (202), the bottom end of the cover plate (201) is fixedly connected to a metal spring (204), and the bottom end of the metal spring (204) is fixedly connected to an upper electrode (205).

5. The modular battery assembly structure according to claim 3, characterized in that: Multiple groups of second fuses (203) are fixedly sleeved inside the top side wall of the cover plate (201), one end of each of the multiple groups of second fuses (203) is fixedly connected to the top of the metal spring (204), and the other end of each of the multiple groups of second fuses (203) is fixedly connected to the side wall of the inner wall of the metal ring (202).

6. The modular battery assembly structure according to claim 3, characterized in that: The bottom end of the cover plate (201) is provided with multiple groups of pressure relief ports (206), the top end of the cover plate (201) is provided with a sealing ring (207), the sealing ring (207) is attached to the top ends of the multiple groups of pressure relief ports (206), and the top end of the cover plate (201) is threadedly connected to a pressure cover (209).

7. The modular battery assembly structure according to claim 6, characterized in that: The top end of the sealing ring (207) is fixedly connected to a pressure spring (208), and the top end of the pressure spring (208) abuts against the bottom end of the pressure cover (209).

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