A positive electrode material protection structure and an energy storage battery

Abstract

The utility model discloses a positive electrode material protection structure and energy storage battery of battery technical field, including bottom plate, the four end angle department of bottom plate is fixed with support rod respectively, and the top of support rod is fixed with current collection frame, and the top of current collection frame is passed through and is equipped with positive electrode electricity access channel and air vent, and the top of positive electrode electricity access channel is fixed with positive electrode protection structure, the positive electrode protection structure includes first conducting plate, and the top electric connection of first conducting plate has current collection conductor, and the bottom of first conducting plate is fixed with at least two continuous Z shape elastic metal sheet. The utility model discloses a positive electrode protection structure is fixed on the top of positive electrode electricity access channel, can protect energy storage battery positive pole through positive electrode protection structure, prevents energy storage battery positive pole and takes place the scratch risk, avoids external impact force influence energy storage battery's normal charge -discharge process, is favorable to the normal use and power supply of protection energy storage battery.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically a positive electrode material protection structure and an energy storage battery. Background Technology

[0002] Cylindrical batteries, as rechargeable energy storage batteries, are widely used in the field of new energy storage due to their large specific surface area and uniform heat distribution, which facilitates heat dissipation and effectively prevents overheating. Cylindrical batteries typically use lithium as the positive electrode and carbon as the negative electrode, separated by a separator. The battery casing is filled with electrolyte, and the inner bottom of the casing is insulated by an insulating plate. Existing cylindrical batteries often integrate the positive terminal at the top. Because this positive terminal protrudes from the casing surface, it is easily scratched and damaged, affecting the normal charging and discharging of the cylindrical battery and hindering its normal use and power supply. Utility Model Content

[0003] The purpose of this utility model is to provide a positive electrode material protection structure and an energy storage battery. By setting a positive electrode protection structure, the positive electrode of the energy storage battery can be prevented from being damaged by collision or scratch.

[0004] To achieve the above objectives, this utility model provides the following technical solution: In a first aspect, this utility model provides a positive electrode material protection structure, including a base plate, with support rods fixed at the four corners of the base plate, a current collector fixed at the top of the support rods, a positive electrode connection channel and a ventilation hole extending through the top of the current collector, a positive electrode protection structure fixed at the top of the positive electrode connection channel, the positive electrode protection structure including a first conductive plate, a current collector wire electrically connected to the top of the first conductive plate, at least two continuous Z-shaped elastic metal sheets fixed at the bottom of the first conductive plate, a positive electrode conductive element fixed at the bottom of the Z-shaped elastic metal sheets, the positive electrode conductive element tangentially penetrating the positive electrode connection channel, a plurality of negative electrode slots opened at the top of the base plate, and a ventilation channel extending through the interior of the negative electrode slots.

[0005] As a further embodiment of this utility model: the ventilation duct penetrates the side of the base plate, and the ventilation duct includes several first channels and second channels distributed at equal intervals, with the first channels and second channels perpendicular to each other.

[0006] As a further embodiment of this utility model, the current collector has a power connection port on its side.

[0007] As a further embodiment of this utility model: the positive electrode connection channel is a cylindrical channel, and the positive electrode connection channels are distributed in a linear array.

[0008] As a further embodiment of this utility model: a protective plate is fixed to the top of the positive electrode protection structure. The protective plate is a flat aluminum alloy plate with a thickness of no more than ten millimeters.

[0009] As a further embodiment of this utility model: the top of the protective plate is welded with multiple heat sinks arranged at equal intervals, and the distance between two adjacent heat sinks is no more than five millimeters.

[0010] As a further embodiment of this utility model, a conductive groove is provided at the bottom of the positive conductive component.

[0011] Secondly, this utility model also provides an energy storage battery, including a cylindrical battery, with a positive electrode protrusion connected to the top of the cylindrical battery, and the energy storage battery also includes a positive electrode material protection structure as described in the above solution.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, by fixing a positive electrode protection structure at the top of the positive electrode connection channel, the positive electrode of the energy storage battery can be protected by the positive electrode protection structure, preventing the risk of scratching the positive electrode of the energy storage battery, avoiding the impact of external impact force on the normal charging and discharging process of the energy storage battery, and thus protecting the normal use and power supply of the energy storage battery.

[0013] 2. In this utility model, by fixing at least two continuous Z-shaped elastic metal sheets at the bottom of the first conductive plate, the continuous Z-shaped elastic metal sheets can undergo elastic expansion and contraction deformation to press against the positive electrode of the energy storage battery, ensuring the stability of the positive electrode connection. On the other hand, by changing the amount of elastic expansion and contraction, it can adapt to energy storage batteries with a certain height difference, and the continuous Z-shaped elastic metal sheets can save the contact area with the first conductive plate compared to the spiral spring. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 Enlarged view of A in the middle; Figure 3 This is a diagram showing the connection between the protective plate and the positive electrode protection structure of this utility model; Figure 4 This utility model Figure 3 Enlarged view of B in the middle; Figure 5 This is an exploded structural diagram of the energy storage battery and the protective structure of the positive electrode material in this utility model.

[0015] In the diagram: 1. Base plate; 2. Support rod; 3. Negative electrode slot; 4. Ventilation duct; 5. Current collector rack; 6. Power connection port; 7. Positive electrode power connection channel; 8. Ventilation hole; 9. Positive electrode protection structure; 91. First conductive plate; 92. Current collector wire; 93. Z-shaped elastic metal sheet; 94. Positive electrode conductive component; 941. Conductive slot; 10. Protective plate; 11. Heat sink; 12. Cylindrical battery; 13. Positive electrode protrusion. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example 1: Please see Figure 1 , Figure 2 and Figure 4 This embodiment provides a positive electrode material protection structure, including a base plate 1, with support rods 2 fixed at the four corners of the base plate 1, and a current collector 5 fixed at the top of the support rods 2. The top of the current collector 5 has a positive electrode connection channel 7 and a ventilation hole 8. The positive electrode connection channel 7 is used to pass through the positive electrode of the energy storage battery and serves as a limiting structure for the positive electrode of the energy storage battery to prevent the positive electrode of the energy storage battery from shaking. The base plate 1 is a rigid flat plate used to support the energy storage battery. The four support rods 2 can support the positive electrode protection structure 9, maintain the overall shape of the positive electrode material protection structure, and prevent the positive electrode material protection structure from deforming and squeezing the energy storage battery.

[0018] A positive electrode protection structure 9 is fixed to the top of the positive electrode connection channel 7. The positive electrode protection structure 9 is used to protect the positive electrode of the energy storage battery and prevent the risk of scratching the positive electrode. The positive electrode protection structure 9 includes a first conductive plate 91. The top of the first conductive plate 91 is electrically connected to a current collector wire 92. The current collector wire 92 is used to collect the electrical energy of the battery cells on the energy storage battery and transmit the collected electrical energy to the connection port 6 for output. At least two continuous Z-shaped elastic metal sheets 93 are fixed to the bottom of the first conductive plate 91. The continuous Z-shaped elastic metal sheets 93 can undergo elastic expansion and contraction deformation. On the one hand, they can press against the positive electrode of the energy storage battery to protect it. To ensure the stability of the positive electrode connection, on the other hand, by changing the elastic expansion and contraction, it can adapt to energy storage batteries with a certain height difference. The certain height difference does not exceed the maximum elongation deformation length of the continuous Z-shaped elastic metal sheet 93. The continuous Z-shaped elastic metal sheet 93 can save the contact area with the first conductive plate 91 compared with the spiral spring. The bottom of the Z-shaped elastic metal sheet 93 is fixed with a positive electrode conductive element 94. The positive electrode conductive element 94 is tangentially inserted through the positive electrode connection channel 7. The top of the base plate 1 is provided with multiple negative electrode slots 3. The interior of the negative electrode slots 3 is provided with ventilation channels 4. The ventilation channels 4 are used to increase the ventilation of the battery cells in the energy storage battery.

[0019] Preferably, the ventilation duct 4 extends through the side of the base plate 1. The ventilation duct 4 includes several equally spaced first channels and second channels. The first channels and second channels are perpendicular to each other. By setting the first channels and second channels that are perpendicular to each other, the ventilation volume inside the base plate 1 can be effectively increased, which facilitates the heat dissipation of the energy storage battery.

[0020] Preferably, the collector rack 5 has a power connection port 6 on its side, which serves as a power transmission interface and is electrically connected to an external load.

[0021] Preferably, the positive electrode connection channel 7 is a cylindrical channel, and the positive electrode connection channels 7 are arranged in a linear array.

[0022] Preferably, a protective plate 10 is fixed to the top of the positive electrode protection structure 9. The protective plate 10 is a flat aluminum alloy plate with a thickness of no more than 10 mm. By setting the protective plate 10, all the first conductive plates 91 included in the positive electrode protection structure 9 can be protected by the protective plate 10, and the external impact force borne by the first conductive plates 91 can be buffered.

[0023] Preferably, the top of the protective plate 10 is welded with multiple heat sinks 11 arranged at equal intervals, and the distance between two adjacent heat sinks 11 is no more than five millimeters. By setting the heat sinks 11, the heat dissipation of the energy storage battery can be enhanced, and the heat sinks 11 can also serve as protective side plates to share the impact force of the energy storage battery.

[0024] Preferably, the bottom of the positive electrode conductive component 94 is provided with a conductive groove 941, which is adapted to the positive electrode of the energy storage battery.

[0025] In this embodiment, the battery cell is a cylindrical battery.

[0026] Example 2: Please see Figures 1-4 This embodiment provides a positive electrode material protection structure, including a base plate 1. Support rods 2 are fixed at the four corners of the base plate 1. A current collector 5 is fixed to the top of each support rod 2. A positive electrode connection channel 7 and a ventilation hole 8 are formed through the top of the current collector 5. The positive electrode connection channel 7 is used to pass through the positive electrode of the energy storage battery and serves as a limiting structure for the positive electrode, preventing it from shaking. The base plate 1 is a rigid flat plate used to support the energy storage battery. The four support rods 2 can support the positive electrode protection structure 9, maintaining the overall shape of the positive electrode material protection structure and preventing... The positive electrode material protection structure deforms and squeezes the energy storage battery. The top of the positive electrode connection channel 7 is fixed with a positive electrode protection structure 9. The positive electrode protection structure 9 includes a first conductive plate 91. The top of the first conductive plate 91 is electrically connected with a current collector wire 92. At least two continuous Z-shaped elastic metal sheets 93 are fixed at the bottom of the first conductive plate 91. A positive electrode conductive element 94 is fixed at the bottom of the Z-shaped elastic metal sheet 93. The positive electrode conductive element 94 penetrates the positive electrode connection channel 7 tangentially. The top of the base plate 1 is provided with multiple negative electrode grooves 3. A ventilation channel 4 is provided through the inside of the negative electrode grooves 3.

[0027] Preferably, the ventilation duct 4 extends through the side of the base plate 1, and the ventilation duct 4 includes several first channels and second channels that are equally spaced and perpendicular to each other.

[0028] Preferably, the collector rack 5 has a power connection port 6 on its side.

[0029] Preferably, the positive electrode connection channel 7 is a cylindrical channel, and the positive electrode connection channels 7 are arranged in a linear array.

[0030] Preferably, a protective plate 10 is fixed to the top of the positive electrode protection structure 9. The protective plate 10 is a flat aluminum alloy plate, and the thickness of the protective plate 10 does not exceed ten millimeters.

[0031] Preferably, the top of the protective plate 10 is welded with multiple heat sinks 11 arranged at equal intervals, and the distance between two adjacent heat sinks 11 is no more than five millimeters.

[0032] Preferably, a conductive groove 941 is provided at the bottom of the positive electrode conductive component 94.

[0033] like Figure 5 As shown, this embodiment provides an energy storage battery, including a cylindrical battery 12, with a positive electrode protrusion 13 connected to the top of the cylindrical battery 12. The energy storage battery also includes a positive electrode material protection structure as described above.

[0034] In this embodiment, the positive electrode protrusion 13 is the positive electrode of the energy storage battery or the positive electrode of the energy storage battery.

[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A protective structure for a positive electrode material, comprising a base plate (1), characterized in that: Support rods (2) are fixed at the four corners of the base plate (1). A current collector (5) is fixed at the top of the support rods (2). A positive electrode connection channel (7) and a ventilation hole (8) are opened through the top of the current collector (5). A positive electrode protection structure (9) is fixed at the top of the positive electrode connection channel (7). The positive electrode protection structure (9) includes a first conductive plate (91). A current collector wire (92) is electrically connected to the top of the first conductive plate (91). At least two continuous Z-shaped elastic metal sheets (93) are fixed at the bottom of the first conductive plate (91). A positive electrode conductive element (94) is fixed at the bottom of the Z-shaped elastic metal sheet (93). The positive electrode conductive element (94) is tangentially connected through the positive electrode connection channel (7). A plurality of negative electrode slots (3) are opened at the top of the base plate (1). A ventilation channel (4) is opened through the inside of the negative electrode slots (3).

2. The positive electrode material protection structure according to claim 1, characterized in that: The ventilation duct (4) penetrates the side of the base plate (1). The ventilation duct (4) includes several first channels and second channels that are equally spaced and perpendicular to each other.

3. The positive electrode material protection structure according to claim 1, characterized in that: The collector rack (5) has a power connection port (6) on its side.

4. The positive electrode material protection structure according to claim 1, characterized in that: The positive electrode connection channel (7) is a cylindrical channel, and the positive electrode connection channel (7) is distributed in a linear array.

5. The positive electrode material protection structure according to claim 1, characterized in that: The top of the positive electrode protection structure (9) is fixed with a protective plate (10), which is a flat aluminum alloy plate and the thickness of the protective plate (10) does not exceed ten millimeters.

6. The positive electrode material protection structure according to claim 5, characterized in that: The top of the protective plate (10) is welded with multiple heat sinks (11) arranged at equal intervals, and the distance between two adjacent heat sinks (11) is no more than five millimeters.

7. The positive electrode material protection structure according to claim 1, characterized in that: The bottom of the positive electrode conductive element (94) is provided with a conductive groove (941).

8. An energy storage battery, comprising a cylindrical battery (12), wherein a positive electrode protrusion (13) is connected to the top of the cylindrical battery (12), characterized in that: The energy storage battery further includes a positive electrode material protection structure as described in any one of claims 1-7.

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