Energy storage battery with fireproof isolation function

Abstract

The utility model relates to the technical field of energy storage batteries, in particular to an energy storage battery with a fireproof isolation function, which comprises a shell, a placement cavity is formed in the shell; a plurality of battery holders are movably arranged in the placing cavity in a lifting manner; a thermo-sensitive spring which expands when heated is arranged between the bottom of the battery holder and the bottom of the placing cavity; the battery holder is provided with a battery pack; a plurality of arc-shaped baffles are arranged in the placement cavity in a sliding manner by taking the battery holder as the circle center; the plurality of arc-shaped baffles are enclosed to form an isolation cavity; the battery holder and the battery pack are arranged in the isolation cavity; and a linkage assembly is arranged between the arc-shaped baffle and the battery holder. When the battery pack is subjected to thermal runaway, the thermosensitive spring is expanded and unfolded, so that the battery pack and the battery holder rise to the top of the isolation cavity at the first height, and the gap between the two adjacent arc-shaped baffles is gradually reduced to be in a closed state, so that the battery pack is isolated, and the other battery packs are prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage batteries, in particular to an energy storage battery with a fireproof isolation function. Background Art

[0002] With the limitation of conventional energy and the increasingly prominent environmental problems, new energy with environmental protection and renewable characteristics has been paid more and more attention by various countries. With the support of my country for the new energy industry, the demand for energy storage batteries is also increasing.

[0003] Most of the current energy storage batteries integrate multiple battery packs on the same shell. Energy storage batteries generate a lot of heat during use and are prone to fire. When one of the battery packs catches fire, due to the small spacing between the multiple battery packs, the burning battery pack is likely to cause a reaction in the remaining battery packs, causing damage to the entire energy storage battery, increasing losses and increasing the risk factor. Utility Model Content

[0004] The purpose of the utility model is to provide an energy storage battery with fireproof isolation function in view of the above-mentioned deficiencies in the prior art.

[0005] The purpose of the utility model is achieved through the following technical solutions: an energy storage battery with fireproof isolation function, comprising a shell; a placement cavity is provided in the shell; a plurality of battery seats are movable in the placement cavity; a thermal spring that expands due to heat is provided between the bottom of the battery seat and the bottom of the placement cavity; the battery seat is provided with a battery pack;

[0006] A plurality of arc-shaped baffles are slidably arranged in the placement cavity with the battery seat as the center; an isolation cavity is formed by enclosing the plurality of arc-shaped baffles; the battery seat and the battery pack are arranged in the isolation cavity; a linkage assembly is arranged between the arc-shaped baffles and the battery seat.

[0007] The utility model is further configured that the linkage assembly includes a plurality of connecting rods; one end of the connecting rod is hinged to the outer wall of the battery seat; and the other end of the connecting rod is hinged to the inner wall of the arc-shaped baffle.

[0008] The utility model is further configured such that a first height is provided in the isolation cavity; when the battery holder moves to the first height, the connecting rods are arranged in parallel;

[0009] When the battery holder moves from the bottom of the isolation cavity to the first height, the distance between two adjacent arc-shaped baffles gradually increases; when the battery holder moves from the first height to the top of the isolation cavity, the distance between two adjacent arc-shaped baffles gradually decreases.

[0010] The utility model is further configured that a plurality of slide rails are arranged in the placement cavity along the diameter direction with the battery seat as the center; and a sliding block is arranged at the bottom of the arc-shaped baffle plate and is slidably connected to the sliding rail.

[0011] The utility model is further configured that the arc-shaped baffle is penetrated by a heat dissipation groove.

[0012] The utility model is further configured that: the arc-shaped baffle is provided with an upper heat-expanding material at the top of the heat dissipation groove; and the arc-shaped baffle is provided with a lower heat-expanding material at the bottom of the heat dissipation groove.

[0013] The utility model is further configured as follows: a fire extinguishing shell is provided in the placement cavity; the fire extinguishing shell is provided on the top of the battery seat; the top of the arc-shaped baffle is movably provided on the bottom of the fire extinguishing shell; and fire extinguishing materials are provided in the fire extinguishing shell.

[0014] The utility model is further configured that an elastic diaphragm is provided in the middle of the fire extinguishing shell; and the battery seat is provided with a puncture needle for puncturing the elastic diaphragm.

[0015] The utility model is further configured that the bottom of the shell is provided with a through hole communicating with the isolation chamber; and the through hole is provided with a valve.

[0016] Beneficial effects of the utility model: When thermal runaway occurs in the battery pack of the utility model, the thermal spring expands and unfolds, so that the battery pack and the battery seat rise to the top of the isolation cavity at a first height, and the gap between two adjacent arc-shaped baffles gradually decreases to a closed state, thereby isolating the battery pack and preventing damage to the remaining battery packs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the utility model. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is the internal structure diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the utility model after the hidden shell;

[0021] Figure 4 is a cross-sectional view of the first state of the utility model;

[0022] Figure 5 is a cross-sectional view of the utility model in the second state;

[0023] Figure 6is a cross-sectional view of the third state of the utility model;

[0024] Among them: 1. Shell; 11. Placement cavity; 12. Slide rail; 2. Battery holder; 21. Battery pack; 3. Thermosensitive spring; 4. Arc baffle; 41. Isolation cavity; 42. Slider; 43. Heat dissipation groove; 44. Upper heat expansion material; 45. Lower heat expansion material; 5. Connecting rod; 6. Fire extinguishing shell; 61. Elastic diaphragm; 7. Needle; 8. Through hole; 81. Valve. DETAILED DESCRIPTION

[0025] The utility model is further described in conjunction with the following embodiments.

[0026] Depend on Figures 1 to 6 It can be seen that the energy storage battery with fireproof isolation function described in this embodiment includes a shell 1; a placement cavity 11 is provided in the shell 1; a plurality of battery holders 2 are movable in the placement cavity 11; a thermal spring 3 that expands due to heat is provided between the bottom of the battery holder 2 and the bottom of the placement cavity 11; a battery pack 21 is provided in the battery holder 2; a plurality of arc-shaped baffles 4 are slidably provided in the placement cavity 11 with the battery holder 2 as the center; a plurality of arc-shaped baffles 4 enclose an isolation cavity 41; the battery holder 2 and the battery pack 21 are provided in the isolation cavity 41; a linkage assembly is provided between the arc-shaped baffle 4 and the battery holder 2. The energy storage battery with fireproof isolation function described in this embodiment, the linkage assembly includes a plurality of connecting rods 5; one end of the connecting rod 5 is hinged to the outer wall of the battery holder 2; the other end of the connecting rod 5 is hinged to the inner wall of the arc-shaped baffle 4. In the energy storage battery with fireproof isolation function described in this embodiment, a first height is set in the isolation cavity 41; when the battery seat 2 moves to the first height, the connecting rod 5 is arranged in parallel; when the battery seat 2 moves from the bottom of the isolation cavity 41 to the first height, the distance between two adjacent arc-shaped baffles 4 gradually increases; when the battery seat 2 moves from the first height to the top of the isolation cavity 41, the distance between two adjacent arc-shaped baffles 4 gradually decreases.

[0027] Specifically, in the energy storage battery with fireproof isolation function described in this embodiment, the temperature of the thermal spring 3 is mainly affected by the battery pack 21 in the battery holder 2; when the temperature of the battery pack 21 is normal, the thermal spring 3 does not expand and unfold, and the battery holder 2 is Figure 4 As shown, the battery holder 2 is at the bottom of the isolation cavity 41, and there is a certain gap between two adjacent arc-shaped baffles 4, which is convenient for the battery pack 21 to dissipate heat;

[0028] When the temperature of the battery pack 21 gradually rises, the thermal spring 3 gradually expands and expands, causing the battery pack 21 and the battery holder 2 to gradually rise. During the rising process, the gap between the two adjacent arc-shaped baffles 4 gradually increases, thereby enhancing the heat dissipation effect. When the battery holder 2 rises to the first height, Figure 5 As shown, the gap between two adjacent arc-shaped baffles 4 is the largest, and the heat dissipation effect is the best;

[0029] When the battery pack 21 experiences thermal runaway, the thermal spring 3 continues to expand and spread, so that the battery pack 21 and the battery holder 2 rise to the top of the isolation cavity 41 at the first height, and the gap between the two adjacent arc-shaped baffles 4 gradually decreases to a closed state. Figure 6 As shown, the battery pack 21 is isolated to prevent damage to the remaining battery packs 21.

[0030] In the energy storage battery with fireproof isolation function described in this embodiment, a plurality of slide rails 12 are arranged in the placement cavity 11 along the diameter direction with the battery holder 2 as the center; a slider 42 is arranged at the bottom of the arc baffle 4 to be slidably connected to the slide rail 12. Specifically, the above arrangement can play a guiding and positioning role for the sliding of the arc baffle 4.

[0031] In the energy storage battery with fireproof isolation function described in this embodiment, the arc-shaped baffle plate 4 is provided with a heat dissipation slot 43. Specifically, the above arrangement facilitates heat dissipation of the battery pack 21 in the isolation cavity 41.

[0032] In the energy storage battery with fireproof isolation function described in this embodiment, the arc baffle 4 is provided with an upper heat expansion material 44 at the top of the heat dissipation groove 43; the arc baffle 4 is provided with a lower heat expansion material 45 at the bottom of the heat dissipation groove 43. Specifically, the upper heat expansion material 44 and the lower heat expansion material 45 can be flame-retardant polyurethane foam with integrated expanded graphite. When the temperature of the battery pack 21 is too high and thermal runaway occurs, the upper heat expansion material 44 and the lower heat expansion material 45 are thermally expanded, thereby shielding the heat dissipation groove 43 and isolating the battery pack 21.

[0033] In the energy storage battery with fireproof isolation function described in this embodiment, a fire extinguishing shell 6 is provided in the placement cavity 11; the fire extinguishing shell 6 is provided on the top of the battery holder 2; the top of the arc baffle 4 is movably provided on the bottom of the fire extinguishing shell 6; and fire extinguishing material is provided in the fire extinguishing shell 6. The fire extinguishing material can be sand.

[0034] In the energy storage battery with fireproof isolation function described in this embodiment, an elastic diaphragm 61 is provided in the middle of the fire extinguishing shell 6 ; and a puncture needle 7 for puncturing the elastic diaphragm 61 is provided in the battery holder 2 .

[0035] Specifically, when the battery pack 21 experiences thermal runaway, the thermistor spring 3 expands and unfolds, causing the battery pack 21 and the battery holder 2 to rise to the top of the isolation chamber 41 at a first height, and the gap between the two adjacent arc-shaped baffles 4 gradually decreases to a closed state, isolating the battery pack 21, and when the battery pack 21 and the battery holder 2 move to the top of the isolation chamber 41, the needle 7 punctures the elastic diaphragm 61 of the fire extinguishing shell 6, so that the fire extinguishing material in the fire extinguishing shell 6 can enter the isolation chamber 41 for fire extinguishing.

[0036] In the energy storage battery with fireproof isolation function described in this embodiment, the bottom of the housing 1 is provided with a through hole 8 connected to the isolation chamber 41; the through hole 8 is provided with a valve 81. Through the above arrangement, when the fire extinguishing material in the fire extinguishing shell 6 enters the isolation chamber 41 for fire extinguishing, the through hole 8 and the valve 81 can play a role in pressure relief.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. An energy storage battery with fireproof isolation function, characterized in that: The invention comprises a shell (1); a placement cavity (11) is provided in the shell (1); a plurality of battery holders (2) are arranged in the placement cavity (11) so as to be movable in a lifting manner; a thermal spring (3) which expands when heated is provided between the bottom of the battery holder (2) and the bottom of the placement cavity (11); and a battery pack (21) is provided in the battery holder (2); A plurality of arc-shaped baffles (4) are slidably arranged in the placement cavity (11) with the battery seat (2) as the center of the circle; the plurality of arc-shaped baffles (4) enclose an isolation cavity (41); the battery seat (2) and the battery pack (21) are arranged in the isolation cavity (41); and a linkage assembly is arranged between the arc-shaped baffles (4) and the battery seat (2).

2. The energy storage battery with fireproof isolation function according to claim 1, characterized in that: The linkage assembly comprises a plurality of connecting rods (5); one end of the connecting rod (5) is hinged to the outer wall of the battery holder (2); and the other end of the connecting rod (5) is hinged to the inner wall of the arc-shaped baffle (4).

3. The energy storage battery with fireproof isolation function according to claim 2, characterized in that: A first height is provided in the isolation cavity (41); when the battery holder (2) moves to the first height, the connecting rods (5) are arranged in parallel; When the battery seat (2) moves from the bottom of the isolation cavity (41) to a first height, the distance between two adjacent arc-shaped baffles (4) gradually increases; when the battery seat (2) moves from the first height to the top of the isolation cavity (41), the distance between two adjacent arc-shaped baffles (4) gradually decreases.

4. The energy storage battery with fireproof isolation function according to claim 1, characterized in that: A plurality of slide rails (12) are arranged in the placement cavity (11) along the diameter direction with the battery seat (2) as the center of the circle; a sliding block (42) slidably connected to the slide rail (12) is arranged at the bottom of the arc-shaped baffle (4).

5. The energy storage battery with fireproof isolation function according to claim 1, characterized in that: The arc-shaped baffle (4) is provided with a heat dissipation groove (43) running through it.

6. The energy storage battery with fireproof isolation function according to claim 5, characterized in that: The arc-shaped baffle (4) is provided with an upper heat-expanding material (44) at the top of the heat dissipation groove (43); and the arc-shaped baffle (4) is provided with a lower heat-expanding material (45) at the bottom of the heat dissipation groove (43).

7. The energy storage battery with fireproof isolation function according to claim 1, characterized in that: A fire extinguishing shell (6) is provided in the placement cavity (11); the fire extinguishing shell (6) is provided on the top of the battery seat (2); the top of the arc-shaped baffle (4) is movably provided on the bottom of the fire extinguishing shell (6); and fire extinguishing material is provided in the fire extinguishing shell (6).

8. The energy storage battery with fireproof isolation function according to claim 7, characterized in that: An elastic diaphragm (61) is provided in the middle of the fire extinguishing shell (6); and a puncture needle (7) for puncturing the elastic diaphragm (61) is provided on the battery seat (2).

9. The energy storage battery with fireproof isolation function according to claim 1, characterized in that: The bottom of the housing (1) is provided with a through hole (8) communicating with the isolation chamber (41); the through hole (8) is provided with a valve (81).

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