Automobile battery and new energy automobile

Abstract

The utility model provides an automobile battery and a new energy automobile. The automobile battery comprises a box body, a battery pack and a cover plate, a battery cavity is formed in the box body, the battery pack is installed in the battery cavity, and an exhaust channel is further arranged in the box body. An exhaust structure is arranged on the cover plate and comprises a plurality of air guide ports; the cover plate is hermetically arranged on the upper end surface of the box body and covers the battery pack; each air guide port of the exhaust structure is communicated with one battery cell of the battery pack; an air outlet of the exhaust structure communicates with an inlet of the exhaust channel. An edge beam is arranged on the outer side of the box body, and an exhaust mechanism is arranged on the edge beam; an air outlet of the exhaust channel is communicated with an air inlet of the exhaust mechanism; according to the scheme provided by the utility model, out-of-control gas of the battery cell of the automobile battery can be discharged to the outside, high-temperature gas and sparks are prevented from directly influencing the battery cells around the thermal out-of-control battery cell, heat is prevented from diffusing and spreading, and the retention time of the high-temperature gas in the battery box is shortened, so that the fire and explosion risks of a battery system are greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile batteries, and specifically relates to an automobile battery and a new energy automobile. Background Art

[0002] Existing conventional automotive battery systems are generally designed to utilize the internal space of the box to withstand the high-temperature and high-pressure gases generated when the battery cells thermally run away. The explosion-proof valve can only be opened to release the gas when the air pressure in the entire battery pack is high. This causes the high-temperature gas to remain in the box for a long time, posing a risk of heat accumulation. Furthermore, the high-temperature gas and sparks are directly sprayed into the box, affecting the surrounding adjacent battery cells, posing a risk of heat diffusion and spread. In severe cases, thermal runaway of the adjacent battery cells may occur, leading to fire of the entire battery.

[0003] Based on the technical problems existing in the above-mentioned automotive batteries, there is no relevant solution yet; therefore, there is an urgent need to find effective solutions to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies in the above-mentioned technologies and to propose an automobile battery and a new energy vehicle, aiming to solve the problem of high-temperature gas discharge in existing automobile batteries.

[0005] The utility model provides an automobile battery, which comprises a box body, a battery pack and a cover plate; a battery cavity is formed in the box body, the battery pack is installed in the battery cavity, and an exhaust channel is also arranged in the box body; an exhaust structure is arranged on the cover plate, and the exhaust structure comprises a plurality of air guide ports; the cover plate is sealingly arranged on the upper end surface of the box body and covers the battery pack; each air guide port of the exhaust structure is respectively communicated with a battery core of the battery pack; the air outlet of the exhaust structure is communicated with the inlet of the exhaust channel; a side beam is arranged on the outer side of the box body, and an exhaust mechanism is arranged on the side beam; the air outlet of the exhaust channel is communicated with the air inlet of the exhaust mechanism.

[0006] Furthermore, the automobile battery also includes an insulation pad, which is provided with a plurality of air holes; the insulation pad covers the battery pack and is located between the battery pack and the cover plate; each air hole of the insulation pad corresponds to a battery cell of the battery pack, and each air outlet of the exhaust structure is connected to an air hole on the insulation pad.

[0007] Furthermore, the cover plate includes an upper cover plate and a lower cover plate; the lower cover plate is bonded to the upper cover plate, and an exhaust cavity is formed between the upper cover plate and the lower cover plate; a plurality of air guide ports are respectively arranged on the lower cover plate, and the plurality of air guide ports are respectively connected to the exhaust cavity; each air guide port corresponds to a battery cell of the battery pack.

[0008] Furthermore, the lower cover plate is protrudingly arranged on the bottom surface of the upper cover plate; the air outlet of the exhaust cavity is arranged on the side between the upper cover plate and the lower cover plate; the lower cover plate is sealed and arranged on the upper end surface of the box body, and the lower cover plate is embedded in the battery cavity, so that the air outlet of the exhaust cavity is connected with the inlet of the exhaust channel.

[0009] Furthermore, a frame cavity is provided on the side beam, and the exhaust mechanism includes an exhaust valve, which is arranged at the exhaust port of the frame cavity; the air outlet of the exhaust channel is connected to the air inlet of the frame cavity.

[0010] Furthermore, the battery pack includes a plurality of battery groups, which are arranged side by side in the battery cavity; each battery group is provided with a separate battery cell.

[0011] Furthermore, the thermal insulation pad is a flexible thermal insulation pad; the flexible thermal insulation pad is attached to the battery pack, and each air guide hole on the thermal insulation pad is respectively connected to a battery cell of the battery pack.

[0012] Furthermore, the exhaust structure also includes a diaphragm; the diaphragm is movably arranged in the exhaust cavity and covers the air guide port; the gas in the air guide port can unidirectionally expand the diaphragm and enter the exhaust cavity.

[0013] Furthermore, the air guide port is a mesh air guide port; the battery cavity is a rectangular parallelepiped structure; and the exhaust channel is arranged at the upper end of the side wall of the battery cavity.

[0014] Correspondingly, in combination with the above solution, the utility model also provides a new energy vehicle, including a vehicle battery, and the vehicle battery is the vehicle battery described above.

[0015] The technical solution provided by the utility model can discharge the runaway gas in the battery cells of the automobile battery to the outside, prevent the high-temperature gas and sparks from directly affecting the surrounding adjacent battery cells of the thermal runaway battery cells, prevent the spread of heat, reduce the residence time of the high-temperature gas in the battery box, prevent heat accumulation, and thus greatly reduce the risk of fire and explosion of the battery system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] The utility model will be further described below in conjunction with the accompanying drawings:

[0018] Figure 1 This is an explosion diagram of a car battery of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the thermal insulation pad of the utility model;

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

[0021] Figure 4 This is a schematic diagram of the one-way exhaust port structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the box structure of the utility model;

[0023] Figure 6 This is a schematic diagram of the side beam structure of the utility model.

[0024] In the figure: 1. box body; 11. battery cavity; 12. exhaust channel; 2. battery pack; 3. thermal insulation pad; 31. air guide hole; 4. cover plate; 41. upper cover plate; 42. lower cover plate; 43. air guide port; 5. diaphragm; 6. side beam; 61. side beam cavity; 62. side beam channel; 7. exhaust valve. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention 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 invention and are not used to limit the present invention.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] like Figures 1 to 6 As shown, the utility model provides an automotive battery, which includes a box body 1, a battery pack 2 and a cover plate 4; wherein a battery cavity 11 is formed in the box body 1, and multiple battery packs 2 are installed in the battery cavity 11, and an exhaust channel 12 is also provided in the box body 1, and the exhaust channel 12 is used to exhaust the gas of the battery pack out of control to the exhaust mechanism; further, an exhaust structure is provided on the cover plate 4, and the exhaust structure includes multiple air guide ports 43, and the air guide ports 43 are one-way exhaust structures; the cover plate 4 is sealed and arranged on the upper end surface of the box body 1, and covers the battery pack 2; specifically, each air guide port 43 of the exhaust structure is respectively connected to a battery cell of the battery pack 2, that is, one air guide hole corresponds to one battery cell; further, the air outlet of the exhaust structure is connected to the inlet of the exhaust channel 12, from The gas can be guided to the exhaust channel 12, and the exhaust channel 12 is guided to the exhaust mechanism; further, a side beam 6 is provided on the outer side of the box body 1, and an exhaust mechanism is provided on the side beam 6; specifically, the air outlet of the exhaust channel 12 is connected with the air inlet of the exhaust mechanism, so that the gas can be discharged to the outside through the exhaust mechanism in time, avoiding the residence time of high-temperature gas in the battery box; the automotive battery provided by the utility model is developed with a cover plate integrated with a one-way exhaust structure and a side beam exhaust structure embedded in the outer edge of the box body to achieve directional exhaust when the battery cell is thermally runaway, and to prevent high-temperature gas and sparks from directly affecting the surrounding adjacent battery cells of the thermal runaway battery cell, and to prevent heat diffusion and spread, while greatly reducing the residence time of high-temperature gas in the battery box, preventing heat accumulation, thereby greatly reducing the risk of fire and explosion of the battery system.

[0031] Preferably, in combination with the above scheme, Figures 1 to 6As shown, the automobile battery provided by the utility model also includes a thermal insulation pad 3, which is a fireproof thermal insulation pad; a plurality of air guide holes 31 are provided on the thermal insulation pad 3; the thermal insulation pad 3 covers the battery pack 2 and is located between the battery pack 2 and the cover plate 4; each air guide hole 31 of the thermal insulation pad 3 corresponds to a battery cell of the battery pack 2, and each air guide port 43 of the exhaust structure is connected to an air guide hole 31 on the thermal insulation pad 3; adopting the above scheme, the thermal insulation pad 3 is designed to cover the battery pack 2, and the air guide holes of the thermal insulation pad 3 correspond to the battery cells of the battery pack 2, so as to achieve directional exhaust when the battery cells are thermally runaway; adopting the design scheme of the above thermal insulation pad, since the thermal insulation pad 3 covers the battery pack 2, the thermal insulation pad 3 can prevent high-temperature gas and sparks from directly affecting the surrounding adjacent battery cells of the thermal runaway battery cells, prevent heat diffusion and spread, and at the same time greatly reduce the residence time of high-temperature gas in the battery box, prevent heat accumulation, thereby greatly reducing the risk of fire and explosion of the battery system.

[0032] Preferably, in combination with the above scheme, Figures 1 to 6 As shown, the cover plate 4 includes an upper cover plate 41 and a lower cover plate 42; the lower cover plate 42 is bonded to the upper cover plate 41 to form a double-layer cover plate structure; further, an exhaust cavity is formed between the upper cover plate 41 and the lower cover plate 42; specifically, a plurality of air guide ports 43 are respectively arranged on the lower cover plate 42, and the plurality of air guide ports 43 are respectively connected to the exhaust cavity; specifically, a plurality of rows of air guide ports 43 are integrated on the lower cover plate 42; each air guide port 43 corresponds to a battery cell of the battery pack 2.

[0033] Preferably, in combination with the above scheme, Figures 1 to 6 As shown, the lower cover plate 42 is protrudingly arranged on the bottom surface of the upper cover plate 41; the air outlet of the exhaust cavity is arranged on the side between the upper cover plate 41 and the lower cover plate 42; the lower cover plate 42 is sealed and arranged on the upper end surface of the box body 1, and the lower cover plate 42 is embedded in the battery cavity 11, so that the air outlet of the exhaust cavity is connected with the inlet of the exhaust channel 12; further, the cover plate 4 is designed to be a double-layer structure, with an exhaust cavity as an air flow channel, and can support the structural strength of the box cover; further, the bottom of the exhaust cavity is provided with an open mesh air guide port (i.e., air guide port 43) corresponding to the battery pack 2 and the thermal insulation pad 3, and the air guide port is covered with a thin sheet material to achieve unidirectional conduction.

[0034] Preferably, in combination with the above scheme, Figures 1 to 6 As shown, the side beam 6 is provided with a frame cavity 61, and the exhaust mechanism includes an exhaust valve 7 (i.e., an explosion-proof valve, specifically, the exhaust valve 7 is provided at the exhaust port of the frame cavity 61, and can be opened when the gas pressure reaches a preset value; further, the air outlet of the exhaust channel 12 is connected to the air inlet of the frame cavity 61; specifically, as shown Figure 6As shown, the directional exhaust of gas is schematically shown in the direction of F, and the specific direction of the air flow is: the gas is ejected from the battery cell of the battery pack 2, passes through the air guide hole 31 of the fireproof insulation pad 3, and then passes through the air guide port 43, pushes open the diaphragm 5, enters the exhaust cavity and the cavity of the side beam 6, pushes open the exhaust valve 7, and completes the directional discharge.

[0035] Preferably, in combination with the above scheme, Figures 1 to 6 As shown, the battery pack 2 includes multiple groups of batteries, which are arranged side by side in the battery cavity 11; each group of batteries is provided with a separate battery cell.

[0036] Preferably, in combination with the above scheme, Figures 1 to 6 As shown, the thermal insulation pad 3 is a flexible thermal insulation pad, which is specifically made of semi-flexible material and can fit tightly with the battery pack and the cover plate 4 to ensure the airflow path; further, the flexible thermal insulation pad is fitted together with the battery pack 2, and each air guide hole 31 on the thermal insulation pad 3 is respectively connected to a battery cell of the battery pack 2, so that even if the battery cell is lifted out of control, the air can be drained to the air guide port 43.

[0037] Preferably, in combination with the above scheme, Figures 1 to 6 As shown, the exhaust structure also includes a diaphragm 5; further, the diaphragm 5 is movably arranged in the exhaust cavity and covers the air guide port 43; the gas in the air guide port 43 can unidirectionally stretch the diaphragm 5 and enter the exhaust cavity; specifically, a layer of diaphragm 5 is covered at the outlet of the air guide port 43 in the exhaust cavity, and the diaphragm is sprayed open from the air guide port 43 when the battery cell is exhausted due to thermal runaway. After the gas enters the exhaust cavity, the diaphragm 5 cannot be opened downward due to the support of the mesh holes at the bottom of the diaphragm (that is, the structure formed by the air guide port 43 of the entire lower cover plate), thereby blocking the gas in the exhaust cavity from entering the battery box from other air guide ports.

[0038] Preferably, in combination with the above scheme, Figures 1 to 6 As shown, the air guide port 43 is a mesh air guide port; the battery cavity 11 is a rectangular parallelepiped structure; the exhaust channel 12 is arranged at the upper end of the side wall of the battery cavity 11 and can be connected to the exhaust structure.

[0039] Accordingly, combined with the above scheme, Figures 1 to 6 As shown, the utility model also provides a new energy vehicle, including a vehicle battery, and the vehicle battery is the vehicle battery described above.

[0040] The technical solution provided by the utility model can discharge the runaway gas in the battery cells of the automobile battery to the outside, prevent the high-temperature gas and sparks from directly affecting the surrounding adjacent battery cells of the thermal runaway battery cells, prevent the spread of heat, reduce the residence time of the high-temperature gas in the battery box, prevent heat accumulation, and thus greatly reduce the risk of fire and explosion of the battery system.

[0041] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the utility model by using the above-mentioned technical content without departing from the scope of the technical solution of the utility model, or modify it into an equivalent embodiment of equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the utility model without departing from the content of the technical solution of the utility model shall fall within the protection scope of the technical solution of the utility model.

Claims

1. An automobile battery, characterized in that: The automobile battery comprises a box (1), a battery pack (2) and a cover plate (4); a battery cavity (11) is formed in the box (1), the battery pack (2) is installed in the battery cavity (11), and an exhaust channel (12) is also provided in the box (1); an exhaust structure is provided on the cover plate (4), and the exhaust structure comprises a plurality of air guide ports (43); the cover plate (4) is sealingly arranged on the upper end surface of the box (1) and covers the battery pack (2); each air guide port (43) of the exhaust structure is respectively connected to a battery cell of the battery pack (2); the air outlet of the exhaust structure is connected to the inlet of the exhaust channel (12); a side beam (6) is provided on the outer side of the box (1), and an exhaust mechanism is provided on the side beam (6); The air outlet of the exhaust passage (12) is communicated with the air inlet of the exhaust mechanism.

2. The automotive battery according to claim 1, characterized in that The automobile battery further comprises a heat insulating pad (3), wherein the heat insulating pad (3) is provided with a plurality of air guide holes (31); the heat insulating pad (3) covers the battery pack (2) and is located between the battery pack (2) and the cover plate (4); each of the air guide holes (31) of the heat insulating pad (3) corresponds to a battery cell of the battery pack (2), and each of the air guide holes (43) of the exhaust structure is connected to an air guide hole (31) on the heat insulating pad (3).

3. The automotive battery according to claim 2, characterized in that: The cover plate (4) comprises an upper cover plate (41) and a lower cover plate (42); the lower cover plate (42) is bonded to the upper cover plate (41), and an exhaust cavity is formed between the upper cover plate (41) and the lower cover plate (42); the plurality of air guide ports (43) are respectively arranged on the lower cover plate (42), and the plurality of air guide ports (43) are respectively communicated with the exhaust cavity; Each of the air guide ports (43) corresponds to a battery cell of the battery pack (2).

4. The automotive battery according to claim 3, characterized in that The lower cover plate (42) is protrudingly arranged on the bottom surface of the upper cover plate (41); the air outlet of the exhaust cavity is arranged on the side surface between the upper cover plate (41) and the lower cover plate (42); the lower cover plate (42) is sealedly arranged on the upper end surface of the box body (1), and the lower cover plate (42) is embedded in the battery cavity (11), so that the air outlet of the exhaust cavity is connected with the inlet of the exhaust channel (12).

5. The automotive battery according to claim 1, characterized in that The side beam (6) is provided with a frame cavity (61), the exhaust mechanism comprises an exhaust valve (7), and the exhaust valve (7) is arranged at the exhaust port of the frame cavity (61); the air outlet of the exhaust channel (12) is connected to the air inlet of the frame cavity (61).

6. The automotive battery according to claim 1, characterized in that The battery pack (2) comprises a plurality of battery groups, which are arranged side by side in the battery cavity (11); each battery group is provided with a separate battery cell.

7. The automotive battery according to claim 2, characterized in that: The thermal insulation pad (3) is a flexible thermal insulation pad; the flexible thermal insulation pad is attached to the battery pack (2), and each of the air guide holes (31) on the thermal insulation pad (3) is respectively connected to a battery cell of the battery pack (2).

8. The automotive battery according to claim 3, characterized in that The exhaust structure further comprises a diaphragm (5); the diaphragm (5) is movably arranged in the exhaust cavity and covers the air guide port (43); the gas in the air guide port (43) can unidirectionally open the diaphragm (5) and enter the exhaust cavity.

9. The automotive battery according to claim 1, characterized in that The air guide port (43) is a mesh air guide port; the battery cavity (11) is a rectangular parallelepiped structure; and the exhaust channel (12) is arranged at the upper end of the side wall of the battery cavity (11).

10. A new energy vehicle, comprising a vehicle battery; characterized in that: The automotive battery is the automotive battery according to any one of claims 1 to 9.

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