Electrochemical energy storage device

Abstract

The application discloses an electrochemical energy storage device, which comprises a battery box, a stab-proof assembly and a short-circuit protection assembly, wherein the battery box comprises a box body and a battery module arranged in the box body, a containing cavity is arranged in the outer peripheral plate of the box body, the stab-proof assembly is arranged in the containing cavity and comprises a buffer piece, and the short-circuit protection assembly comprises a cover shell which is arranged outside the wiring terminal of the battery box and has a threading hole. The electrochemical energy storage device can isolate and protect the wiring terminal by arranging the cover shell outside the wiring terminal, so that the wiring terminal is not directly exposed, the wiring terminal of the positive and negative electrodes is prevented from being directly connected by a conductor to cause short circuit, and the short circuit problem caused by the sharp object piercing the battery cell is avoided by arranging the stab-proof assembly in the outer peripheral plate of the battery box, so that the long-term service life of the battery box is effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of battery box technology, and more specifically, to an electrochemical energy storage device. Background Technology

[0002] Electrochemical energy storage systems are a technology that stores and releases energy through electrochemical reactions. The basic principle is to utilize the reversible electrochemical reactions between different materials within the battery to convert electrical energy into chemical energy for storage, and then convert the chemical energy back into electrical energy for output when needed. An electrochemical energy storage system typically consists of several main components: a battery pack, a battery management system, an energy management system, an energy storage converter, and other electrical equipment. The battery pack is the core component of the energy storage system, responsible for the actual energy storage and release. However, various problems can occur during use, such as battery pack short circuits. When a short circuit occurs, the internal current of the battery increases sharply, generating a large amount of heat, leading to overheating or even thermal runaway, which may ultimately cause a fire or explosion. There are many reasons for short circuits, such as direct connection of conductors to the battery's positive and negative terminals, mechanical damage such as impact or puncture, or water immersion. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose an electrochemical energy storage device. This electrochemical energy storage device can isolate and protect the terminals by providing a cover outside the terminals, preventing the terminals from being directly exposed and preventing short circuits caused by direct connection of the positive and negative terminals with conductors. In addition, the anti-puncture component provided inside the outer peripheral plate of the battery box can prevent short circuits caused by sharp objects puncturing the battery cells, effectively ensuring the long service life of the battery box.

[0005] The electrochemical energy storage device of this invention includes a battery box, an anti-puncture component, and a short-circuit protection component. The battery box includes a box body and a battery module disposed in the box body. The outer peripheral plate of the box body has a receiving cavity. The anti-puncture component is disposed in the receiving cavity and includes a buffer. The short-circuit protection includes a cover. The cover is disposed outside the wiring terminals of the battery box and has a wire through hole.

[0006] The electrochemical energy storage device of this invention includes a battery box comprising a box body and a battery module disposed within the box body. The outer peripheral plate of the box body has a receiving cavity. An anti-puncture component is disposed within the receiving cavity and includes a buffer. The short-circuit protection includes a cover covering the outside of the battery box's terminals, and the cover has a wire-passing hole. Therefore, by providing a cover outside the terminals, this application can isolate and protect the terminals, preventing them from being directly exposed and preventing short circuits caused by direct conductor connection between the positive and negative terminals. Furthermore, the anti-puncture component inside the outer peripheral plate of the battery box can prevent short circuits caused by sharp objects puncturing the battery cells, effectively ensuring the long service life of the battery box.

[0007] In some embodiments, the outer peripheral plate of the housing includes an inner plate and an outer plate, with the outer plate and the inner plate spaced apart to form the receiving cavity.

[0008] In some embodiments, the buffer includes a stab-proof sleeve and a buffer sleeve, wherein the stab-proof sleeve is disposed on the inner side of the outer plate and the buffer sleeve is disposed on the inner side of the stab-proof sleeve.

[0009] In some embodiments, the housing further includes a bottom plate and a top cover plate, the bottom plate being connected to the bottom of the outer peripheral plate and the top cover plate being connected to the top of the outer peripheral plate, and a sealing plate being provided at the upper opening of the receiving cavity, the sealing plate being provided with a liquid injection port for injecting a colored liquid.

[0010] In some embodiments, the housing includes an upper housing and a lower housing, the lower housing being mounted on top of the enclosure and covering the outside of the wiring terminals, the upper housing being detachably connected to the lower housing, and the wire hole being formed at the connection between the upper housing and the lower housing.

[0011] In some embodiments, the bottom of the lower housing is provided with a mounting base, the mounting base is connected to the top plate of the housing, and the lower housing is rotatable relative to the mounting base.

[0012] In some embodiments, the base is an annular structure, and the outer peripheral edge of the bottom of the lower housing has an outwardly protruding retaining edge that extends annularly along the circumference of the base. The base is provided with a retaining groove that matches the retaining edge.

[0013] In some embodiments, the upper edge of the lower housing has a lower connecting lug extending horizontally outward, and the lower edge of the upper housing has an upper connecting lug extending horizontally outward, the upper connecting lug and the lower connecting lug being detachably connected.

[0014] Both the upper connecting lugs and the lower connecting lugs are arranged in multiples at intervals along the circumference of the base, with each of the multiple upper connecting lugs corresponding to one of the multiple lower connecting lugs.

[0015] In some embodiments, the electrochemical energy storage device further includes a collision protection component, which includes a bottom protective plate and a collision protection frame mounted on the bottom protective plate, wherein the housing is disposed on the bottom protective plate and located inside the collision protection frame.

[0016] In some embodiments, the anti-collision frame includes a plurality of support rods and a plurality of annular beams. The plurality of support rods are arranged at intervals along the circumference of the base plate and are vertically arranged. The annular beams extend along the circumference of the base plate and are wrapped around the plurality of support rods. The plurality of annular beams are arranged at intervals along the height direction of the support rods. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the electrochemical energy storage device according to an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the anti-collision component of the electrochemical energy storage device according to an embodiment of the present invention.

[0019] Figure 3 This is a cross-sectional view of the electrochemical energy storage device according to an embodiment of the present invention.

[0020] Figure 4 yes Figure 3 Enlarged view of section A.

[0021] Figure 5 This is a schematic diagram of the sealing plate of the electrochemical energy storage device according to an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the casing of the electrochemical energy storage device according to an embodiment of the present invention.

[0023] Figure 7 This is a schematic diagram of the base structure of the casing of the electrochemical energy storage device according to an embodiment of the present invention.

[0024] Figure 8 This is a schematic diagram of the lower shell of the electrochemical energy storage device according to an embodiment of the present invention.

[0025] Figure label: Box body 1, anti-collision frame 2, cover 3, wiring terminal 4, anti-stab component 5, outer plate 101, upper cover plate 102, inner plate 103, sealing plate 104, injection hole 105, bottom protective plate 201, ring beam 202, support rod 203, anti-stab sleeve 501, buffer sleeve 202, mounting base 301, lower housing 302, upper housing 303, lower connecting lug 304, bolt 305, pad 306, slot 307, edge 308, wire hole 309. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] like Figures 1-8 As shown, the electrochemical energy storage device according to an embodiment of the present invention includes a battery box, an anti-stab component 5, and a short-circuit protection component. The battery box includes a box body 1 and a battery module disposed in the box body 1. The outer peripheral plate of the box body 1 is provided with a receiving cavity. The anti-stab component 5 is disposed in the receiving cavity and includes a buffer. The short-circuit protection includes a cover 3. The cover 3 is disposed on the outside of the wiring terminals 4 of the battery box, and the cover 3 has a wire through hole 309.

[0028] like Figure 1 and Figure 3 As shown, the battery box is a rectangular box structure 1. The buffer is set inside the outer peripheral plate. When a sharp object pierces the outer peripheral plate of the battery box, the buffer can prevent the sharp object from advancing and avoid the sharp object from piercing the battery cell and causing a short circuit. In addition, the wiring terminals 4 of the battery module are set on the top surface of the battery box. Each wiring terminal 4 is covered by a cover 3. The cover 3 can protect the wiring terminal 4 and effectively prevent different wiring terminals 4 from directly contacting each other and causing a short circuit.

[0029] The electrochemical energy storage device of this invention includes a battery box comprising a box body 1 and a battery module disposed within the box body 1. The outer peripheral plate of the box body 1 has a receiving cavity. An anti-puncture component 5 is disposed within the receiving cavity and includes a buffer. Short-circuit protection includes a cover 3, which covers the outside of the battery box's terminals 4. The cover 3 has a wire-passing hole 309. Therefore, by providing a cover 3 outside the terminals 4, this application can isolate and protect the terminals 4, preventing them from being directly exposed and preventing short circuits caused by direct connection between the positive and negative terminals 4 and conductors. Furthermore, providing the anti-puncture component 5 within the outer peripheral plate of the battery box can prevent short circuits caused by sharp objects puncturing the battery cells, effectively ensuring the long service life of the battery box.

[0030] In some embodiments, such as Figure 4As shown, the outer peripheral plate of the housing 1 includes an inner plate 103 and an outer plate 101, with the outer plate 101 and the inner plate 103 spaced apart to form a receiving cavity. In other words, the outer peripheral plate of the housing 1 is a double-layer plate. On the one hand, the receiving cavity for the anti-puncture component 5 can be naturally formed between the double-layer plates, reducing the difficulty of the process. On the other hand, the inner plate 103 and the outer plate 101 can form a double layer of protection, further improving the protection effect on the battery module.

[0031] In some embodiments, such as Figure 4 As shown, the buffer includes a stab-proof sleeve 501 and a buffer sleeve 202. The stab-proof sleeve 501 is located inside the outer plate 101, and the buffer sleeve 202 is located inside the stab-proof sleeve 501. Preferably, the stab-proof sleeve 501 is made of soft material, and the buffer sleeve 202 is made of rubber material. Thus, the stab-proof sleeve 501 can form a deformable barrier when a sharp object pierces it, blocking and dissipating the forward movement of the sharp object. The buffer sleeve 202, located inside the stab-proof sleeve 501, buffers and disperses the force generated by the puncture, thereby further preventing sharp objects from piercing the interior of the battery box.

[0032] In some embodiments, such as Figure 1 and Figure 3 As shown, the housing 1 also includes a bottom plate and a top cover plate 102. The bottom plate is connected to the bottom of the outer peripheral plate, and the top cover plate 102 is connected to the top of the outer peripheral plate. A sealing plate 104 is provided at the upper opening of the receiving cavity, and the sealing plate 104 is provided with a liquid injection port for injecting a colored liquid. Thus, liquid fuel can be injected between the two layers through the injection port. When cracks or perforations appear in the outer plate 101, the liquid fuel will leak out, alerting personnel to promptly detect damage to the housing 1 and enabling timely repair and maintenance. Specifically, during assembly, the sealing plate 104 is first installed on the outer peripheral plate, then the injection port is opened for liquid injection, and then the top cover plate 102 is installed on the outer peripheral plate and the sealing plate 104 is pressed tightly to achieve a seal in the housing 1.

[0033] In some embodiments, such as Figure 6 As shown, the housing 3 includes an upper housing 303 and a lower housing 302. The lower housing 302 is mounted on top of the housing 1 and covers the outside of the terminal block 4. The upper housing 303 is detachably connected to the lower housing 302, and a wire hole 309 is formed at the connection between the upper housing 303 and the lower housing 302. Therefore, when connecting wires, the upper housing 303 is first removed. After the wire is connected to the terminal block 4, the wire is led out from the notch in the lower housing 302 (the lower half of the wire hole 309). Then, the upper housing 303 is connected to the lower housing 302, and the notch in the upper housing 303 corresponds to the notch in the lower housing 302 to form the wire hole 309. It is understood that by constructing the housing 3 as having a detachable upper housing 303 and a lower housing 302, it facilitates the assembly and disassembly of the wires and the terminal block 4.

[0034] Furthermore, such as Figure 6 As shown, the bottom of the lower housing 302 is provided with a mounting base 301, which is connected to the top plate of the housing 1. The lower housing 302 is rotatable relative to the mounting base 301. Therefore, the lower housing 302 can rotate adaptively according to the direction of the wire to adjust the position of the notch and avoid the problem of the direction of the wire hole 309 conflicting with the direction of the wire.

[0035] In some embodiments, such as Figure 7 As shown, the base is a ring-shaped structure. The outer periphery of the bottom of the lower housing 302 has an outwardly protruding retaining edge 308 that extends in a ring along the circumference of the base. The base is provided with a retaining groove 307 that matches the retaining edge 308. Thus, the cooperation between the retaining edge 308 and the retaining groove 307 can not only assemble and connect the lower housing 302 with the base to prevent the cover 3 from falling off, but also guide and limit the rotation of the lower housing 302 using the retaining groove 307. At the same time, the lower housing 302 can be rotated and adjusted without disassembling the structural components, making the operation simple and quick.

[0036] In some embodiments, such as Figure 6 As shown, the upper edge of the lower housing 302 has a horizontally extending lower connecting lug 304, and the lower edge of the upper housing 303 has a horizontally extending upper connecting lug. The upper connecting lug and the lower connecting lug 304 are detachably connected. Specifically, multiple upper connecting lugs and lower connecting lugs 304 are arranged at intervals along the circumference of the base, with each upper connecting lug corresponding to a lower connecting lug 304. The upper connecting lugs and the lower connecting lugs 304 are detachably connected by bolts 305.

[0037] Preferably, a pad 306 is provided on the wall of the wire hole 309. The pad 306 can serve as an insulating layer and be tightly attached to the outside of the wire to prevent water from entering the housing 3 through the wire hole 309.

[0038] Preferably, the wire hole 309 is a circular hole, and the upper housing 303 and the lower housing 302 are respectively provided with semi-circular holes that form the circular wire hole 309.

[0039] In some embodiments, such as Figure 1 As shown, the electrochemical energy storage device also includes an anti-collision component, which includes a bottom protective plate 201 and an anti-collision frame 2 mounted on the bottom protective plate 201. The housing 1 is located on the bottom protective plate 201 and inside the anti-collision frame 2. Thus, the anti-collision component can protect the housing 1 from the bottom and all sides. When an external object impacts the housing 1, the anti-collision component can act as a barrier and prevent impact, thus preventing the battery module from deforming and short-circuiting due to the impact.

[0040] Furthermore, such as Figure 2As shown, the crash barrier 2 includes multiple support rods 203 and multiple annular beams 202. The support rods 203 are spaced apart and vertically arranged along the circumference of the base plate. The annular beams 202 extend along the circumference of the base plate and are wrapped around the support rods 203, with the annular beams 202 spaced apart along the height of the support rods 203. Therefore, the crash barrier 2 can absorb and disperse impact forces during use. The bottom guard plate 201 facilitates the installation of the crash barrier 2.

[0041] Specifically, the working principle of this application is as follows: During use, the battery module is installed inside the housing 1, and the positive and negative terminals are connected to the two terminals 4 that penetrate the upper cover plate 102 respectively. When impacted, the anti-collision mechanism installed on the outside of the housing 1 can absorb and disperse the impact energy, preventing the internal battery module from deforming and short-circuiting due to the impact. When faced with sharp objects, the housing 1 and the anti-puncture component 5 can prevent sharp objects from penetrating into the battery module inside the housing 1, avoiding the problem of short circuit after the battery module is punctured. At the same time, during use, the double-layer structure design of the outer plate 101 and the inner plate 103 can work with the upper cover plate 102 to better improve the sealing of the housing 1, preventing water from entering the housing 1. At the same time, during use, the liquid injection hole 105 is opened to inject liquid dye between the inner plate 103 and the outer plate 101. After the injection is completed, the liquid injection hole 105 is sealed, and the interior is sealed. When the outer plate 101 cracks or perforates, the liquid dye will seep out, which can detect the damage to the housing 1 in time.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0047] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An electrochemical energy storage device, characterized in that, The device includes a battery box, an anti-stab component, and a short-circuit protection component. The battery box includes a box body and a battery module disposed inside the box body. The outer peripheral plate of the box body has a receiving cavity. The anti-stab component is disposed in the receiving cavity and includes a buffer. The short-circuit protection component includes a cover that covers the outside of the wiring terminals of the battery box and has a wire through hole.

2. The electrochemical energy storage device according to claim 1, characterized in that, The outer peripheral plate of the box includes an inner plate and an outer plate, and the outer plate and the inner plate are spaced apart to form the receiving cavity.

3. The electrochemical energy storage device according to claim 2, characterized in that, The buffer component includes a stab-proof sleeve and a buffer sleeve. The stab-proof sleeve is located inside the outer plate, and the buffer sleeve is located inside the stab-proof sleeve.

4. The electrochemical energy storage device according to claim 1, characterized in that, The housing also includes a bottom plate and a top cover plate. The bottom plate is connected to the bottom of the outer peripheral plate, and the top cover plate is connected to the top of the outer peripheral plate. A sealing plate is provided at the upper opening of the receiving cavity, and a liquid injection port is provided on the sealing plate for injecting colored liquid.

5. The electrochemical energy storage device according to claim 1, characterized in that, The housing includes an upper housing and a lower housing. The lower housing is installed on the top of the box and covers the outside of the wiring terminals. The upper housing is detachably connected to the lower housing. The wire hole is formed at the connection between the upper housing and the lower housing.

6. The electrochemical energy storage device according to claim 5, characterized in that, The bottom of the lower housing is provided with a mounting base, which is connected to the top plate of the housing, and the lower housing is rotatable relative to the mounting base.

7. The electrochemical energy storage device according to claim 6, characterized in that, The base is a ring-shaped structure. The outer peripheral edge of the bottom of the lower housing has an outwardly protruding retaining edge that extends in a ring along the circumference of the base. The base is provided with a retaining groove that matches the retaining edge.

8. The electrochemical energy storage device according to claim 7, characterized in that, The upper edge of the lower housing has a lower connecting lug extending horizontally outward, and the lower edge of the upper housing has an upper connecting lug extending horizontally outward. The upper connecting lug and the lower connecting lug are detachably connected. Both the upper connecting lugs and the lower connecting lugs are arranged in multiples at intervals along the circumference of the base, with each of the multiple upper connecting lugs corresponding to one of the multiple lower connecting lugs.

9. The electrochemical energy storage device according to claim 1, characterized in that, It also includes a collision protection component, which includes a bottom guard plate and a collision protection frame mounted on the bottom guard plate. The housing is located on the bottom guard plate and inside the collision protection frame.

10. The electrochemical energy storage device according to claim 1, characterized in that, The anti-collision frame includes multiple support rods and multiple annular beams. The multiple support rods are arranged at intervals along the circumference of the base plate and are vertically set. The annular beams extend along the circumference of the base plate and are wrapped around the multiple support rods. The multiple annular beams are arranged at intervals along the height direction of the support rods.

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