High-safety power battery module and automobile

Abstract

The utility model relates to the technical field of power batteries, in particular to a high-safety power battery module and an automobile. A battery pack is arranged in the battery shell; the battery pack is coated with a heat conduction layer; the heat conduction layer is coated with a heat insulation layer; a cooling liquid cavity is formed between the outer wall of the heat conduction layer and the inner wall of the heat insulation layer; a heat dissipation plate is arranged in the battery shell; the heat dissipation plate is provided with a liquid inlet channel, a liquid outlet channel, a liquid inlet and a liquid outlet; the liquid inlet is communicated with the liquid inlet channel; the liquid outlet is communicated with the liquid outlet channel; and the liquid inlet channel and the liquid outlet channel are respectively communicated with the cooling liquid cavity. According to the utility model, the heat insulation layer is arranged on the battery shell, so that the damage to a user when the battery pack is in thermal runaway can be effectively prevented; in addition, the cooling liquid cavity is formed between the heat conduction layer and the heat insulation layer, so that the battery pack can be effectively cooled.

Description

TECHNICAL FIELD

[0001] The utility model relates to power battery technical field, concretely relates to a high security power battery module and car. BACKGROUND

[0002] With the rapid development of electric vehicle technology, power battery as the core component of electric vehicle, its performance directly affects the power performance, endurance mileage and safety of the whole vehicle. However, power battery will produce a lot of heat in the working process. If these heat cannot be dissipated in time and effectively, not only the performance and life of the battery will be affected, but also the safety hazard to the user may be caused.

[0003] At present, the commonly used method is to cover a layer of heat insulation film on the surface of the battery pack to prevent high temperature from causing harm to the user. However, this method, although it improves the safety to a certain extent, also brings new problems. The application of heat insulation film limits the heat dissipation efficiency of the battery pack, causing the battery to easily overheat when running under high load, thereby affecting the performance and service life of the battery. UTILITARIAN CONTENT

[0004] The utility model aims at the above -mentioned insufficient in prior art, provides a high security power battery module and car.

[0005] The utility model discloses a kind of high security power battery module, including battery shell;Battery pack is equipped in the battery shell;The battery pack is coated with heat conducting layer;Heat conducting layer is coated with heat insulation layer;Cooling liquid cavity is formed between the outer wall of heat conducting layer and the inner wall of heat insulation layer;

[0006] The battery shell is equipped with radiating plate;Radiating plate is equipped with liquid inlet channel, liquid outlet channel, liquid inlet and liquid outlet;Liquid inlet is communicated with liquid inlet channel;Liquid outlet is communicated with liquid outlet channel;Liquid inlet channel and liquid outlet channel are communicated with cooling liquid cavity respectively.

[0007] The utility model further is provided, and the battery shell is equipped with multiple battery packs;Cooling liquid cavity corresponding to the battery pack is formed between the outer wall of heat conducting layer and the inner wall of heat insulation layer.

[0008] The utility model further is provided, and the inner wall of heat insulation layer is equipped with liquid inlet channel groove;One end of liquid inlet channel groove is communicated with one end of cooling liquid cavity;The other end of liquid inlet channel groove is communicated with liquid inlet channel.

[0009] The utility model further is provided, and the side wall of heat conducting layer is equipped with liquid outlet channel groove;Liquid outlet channel groove is used for connecting the other end of cooling liquid cavity and liquid outlet channel.

[0010] The heat dissipation plate is arranged on the side of the heat conduction layer and the side of the heat insulation layer.

[0011] The heat insulation layer is ceramic silica gel, and the heat conduction layer is heat conduction silica gel.

[0012] The cooling liquid cavity is internally provided with an indicating unit.

[0013] The indicating unit comprises a containing shell connected with the inner wall of the heat insulation layer and an extrusion shell connected with the outer wall of the heat conduction layer; the containing shell and the extrusion shell are formed with a containing cavity; and the containing cavity is internally provided with an indicating agent.

[0014] The containing shell is internally recessed to form a recess; and the release port is arranged on the side wall of the recess.

[0015] The containing shell is internally recessed to form a recess; and the release port is arranged on the side wall of the recess.

[0016] The automobile comprises an automobile body; the automobile body is internally provided with a battery cabin; and the battery cabin is internally provided with a plurality of high-safety power battery modules.

[0017] The utility model discloses the heat insulation layer is arranged in the battery shell, can effectively prevent the battery pack heat runaway when causing harm to the user, in addition, the cooling liquid cavity is formed between the heat conduction layer and the heat insulation layer, can effectively cool the battery pack. BRIEF DESCRIPTION OF DRAWINGS

[0018] The embodiments in the drawings do not constitute any limitation on the utility model, and other drawings can be obtained by the following drawings without creative labor for the ordinary skilled in the art.

[0019] Figure 1 It is the structure schematic diagram of the utility model automobile;

[0020] Figure 2 It is the structure schematic diagram of the utility model battery cabin;

[0021] Figure 3 It is the structure schematic diagram of the utility model high-safety power battery module;

[0022] Figure 4 It is the structure schematic diagram of the utility model high-safety power battery module hidden battery shell;

[0023] Figure 5 It is the structure schematic diagram of the utility model high-safety power battery module hidden battery shell from another perspective.

[0024] Figure 6 yes Figure 5 A magnified view of part A in the middle;

[0025] Figure 7 This is a schematic diagram of the interior of the high-safety power battery module of this utility model after the battery casing is hidden;

[0026] Figure 8 This is a partial schematic diagram of the interior of the high-safety power battery module of this utility model after the battery casing is hidden.

[0027] Figure 9 This is a cross-sectional view of the high-safety power battery module of this utility model after the battery casing is hidden;

[0028] Figure 10 yes Figure 9 A magnified view of part B in the middle;

[0029] The components are: 1. Battery casing; 11. Battery pack; 2. Thermal conductive layer; 21. Liquid outlet channel; 3. Thermal insulation layer; 31. Liquid inlet channel; 4. Coolant chamber; 5. Heat sink; 51. Liquid inlet channel; 52. Liquid outlet channel; 53. Liquid inlet; 54. Liquid outlet; 6. Indicator unit; 61. Housing shell; 62. Extrusion shell; 7. Housing cavity; 71. Release port; 72. One-way valve; 8. Recess; 9. Vehicle body; 91. Battery compartment. Detailed Implementation

[0030] The present invention will be further described in conjunction with the following embodiments.

[0031] Depend on Figures 1 to 10 As can be seen, the high-safety power battery module described in this embodiment includes a battery housing 1; a battery pack 11 is disposed inside the battery housing 1; a thermally conductive layer 2 is covered outside the battery pack 11; a thermally insulating layer 3 is covered outside the thermally conductive layer 2; a coolant cavity 4 is formed between the outer wall of the thermally conductive layer 2 and the inner wall of the thermally insulating layer 3; a heat sink 5 is disposed inside the battery housing 1; the heat sink 5 is provided with an inlet channel 51, an outlet channel 52, an inlet port 53, and an outlet port 54; the inlet port 53 is connected to the inlet channel 51; the outlet port 54 is connected to the outlet channel 52; the inlet channel 51 and the outlet channel 52 are respectively connected to the coolant cavity 4. In the high-safety power battery module described in this embodiment, the thermally insulating layer 3 is ceramicized silicone; the thermally conductive layer 2 is thermally conductive silicone.

[0032] Specifically, the high-safety power battery module has the heat insulation layer 3 made of ceramicized silica gel of silica gel foaming material, which can be quickly ceramicized when the battery pack 11 has thermal runaway, so as to prevent heat from being transferred to the adjacent battery pack 11, thereby avoiding chain reaction.

[0033] In addition, the cooling liquid cavity 4 is in communication with the external cooling circulation system through the liquid inlet channel 51, the liquid outlet channel 52, the liquid inlet 53 and the liquid outlet 54 of the heat dissipation plate 5, so as to effectively cool the battery pack 11.

[0034] The battery shell 1 is provided with the heat insulation layer 3, so as to effectively prevent the user from being hurt when the battery pack 11 has thermal runaway; in addition, the cooling liquid cavity 4 is formed between the heat conduction layer 2 and the heat insulation layer 3, so as to effectively cool the battery pack 11.

[0035] The high-safety power battery module has the battery shell 1 provided with a plurality of battery packs 11; the outer wall of the heat conduction layer 2 and the inner wall of the heat insulation layer 3 form a plurality of cooling liquid cavities 4 corresponding to the battery packs 11.

[0036] Specifically, the cooling liquid cavities 4 are respectively and one-to-one arranged at the top and bottom positions of the battery pack 11, so as to increase the overall battery capacity of the high-safety power battery module and effectively improve the cooling effect.

[0037] The high-safety power battery module has the inner wall of the heat insulation layer 3 provided with a liquid inlet channel 31; one end of the liquid inlet channel 31 is in communication with one end of the cooling liquid cavity 4; the other end of the liquid inlet channel 31 is in communication with the liquid inlet channel 51. The high-safety power battery module has the side wall of the heat conduction layer 2 provided with a liquid outlet channel 21; the liquid outlet channel 21 is used for connecting the other end of the cooling liquid cavity 4 and the liquid outlet channel 52.

[0038] Specifically, the above arrangement enables the external cooling liquid to enter the liquid inlet channel 51 of the heat dissipation plate 5 from the liquid inlet 53, and flow to the liquid inlet channel 31 corresponding to each battery pack 11 from the liquid inlet channel 51, and then enter the cooling liquid cavity 4 through the liquid inlet channel 31; after the cooling liquid passes through the cooling liquid cavity 4, it flows to the liquid outlet channel 21 corresponding to each battery pack 11, and then flows into the liquid outlet channel 52 of the heat dissipation plate 5 through the liquid outlet channel 21, and then flows out of the heat dissipation plate 5 through the liquid outlet 54.

[0039] In addition, the liquid inlet channel 31 is arranged on the inner wall of the heat insulation layer 3, and the liquid outlet channel 21 is arranged on the side wall of the heat conduction layer 2, so that the liquid inlet channel 31 and the liquid outlet channel 21 do not interfere with each other, and the liquid inlet channel 51 and the liquid outlet channel 52 do not interfere with each other, so that the cooling liquid can flow stably.

[0040] The heat dissipation plate 5 is arranged on the side of the heat conduction layer 2 and the side of the heat insulation layer 3, so that the overall structure is more stable and reliable.

[0041] The cooling liquid cavity 4 is provided with an indicating unit 6; the indicating unit 6 includes a containing shell 61 connected with the inner wall of the heat insulation layer 3 and an extrusion shell 62 connected with the outer wall of the heat conduction layer 2; the containing shell 61 and the extrusion shell 62 form a containing cavity 7 therebetween; the containing cavity 7 is provided with an indicating agent. The high safety power battery module has the containing shell 61 provided with a release port 71 communicating with the containing cavity 7; the release port 71 is provided with a one-way valve 72. The containing shell 61 is recessed inward to form a recess 8; the release port 71 is arranged on the side wall of the recess 8.

[0042] Specifically, the high safety power battery module has different components of the indicating agent placed in the indicating unit 6 in the cooling liquid cavity 4 corresponding to each battery pack 11.

[0043] When the battery pack 11 bulges, the extrusion shell 62 moves towards the containing shell 61, so that the volume of the containing cavity 7 decreases, the indicating agent in the containing cavity 7 flows out of the one-way valve 72 of the release port 71 into the cooling liquid cavity 4, and mixes with the cooling liquid.

[0044] When it is necessary to detect the bulging state of the battery pack 11 and the position of the soft pack battery monomer that bulges, it is only necessary to extract the cooling liquid and measure the content of each indicating agent in the cooling liquid.

[0045] In addition, the recess 8 is arranged to make the indicating agent flow smoothly from the release port 71 to the cooling liquid cavity 4.

[0046] The automobile provided by the embodiment comprises an automobile body 9; a battery cabin 91 is arranged in the automobile body 9; and a plurality of high-safety power battery modules are arranged in the battery cabin 91. Specifically, the automobile shown in the embodiment can improve the total capacity of the battery, effectively prevent the heat runaway from causing harm to the user, and has a good cooling effect, thereby greatly improving the safety performance.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application.

Claims

1. A high-safety power battery module, characterized in that: Includes a battery casing; a battery pack is disposed inside the battery casing; the battery pack is covered with a thermally conductive layer; the thermally conductive layer is covered with a thermal insulation layer; a coolant cavity is formed between the outer wall of the thermally conductive layer and the inner wall of the thermal insulation layer; The battery casing is equipped with a heat sink; the heat sink is equipped with an inlet channel, an outlet channel, an inlet port, and an outlet port; the inlet port is connected to the inlet channel; the outlet port is connected to the outlet channel; the inlet channel and the outlet channel are respectively connected to the coolant chamber.

2. The high-safety power battery module according to claim 1, characterized in that: The battery casing contains multiple battery packs; multiple coolant cavities corresponding to the battery packs are formed between the outer wall of the heat-conducting layer and the inner wall of the heat-insulating layer.

3. The high-safety power battery module according to claim 1, characterized in that: The inner wall of the heat insulation layer is provided with a liquid inlet channel; one end of the liquid inlet channel is connected to one end of the coolant chamber; the other end of the liquid inlet channel is connected to the liquid inlet channel.

4. A high-safety power battery module according to claim 1, characterized in that: The sidewall of the heat-conducting layer is provided with a liquid outlet groove; the liquid outlet groove is used to connect the other end of the coolant chamber and the liquid outlet channel.

5. A high-safety power battery module according to claim 1, characterized in that: The heat dissipation plate is located on the side of the heat-conducting layer and the side of the heat insulation layer.

6. A high-safety power battery module according to claim 1, characterized in that: The heat insulation layer is ceramicized silicone; the thermally conductive layer is thermally conductive silicone.

7. A high-safety power battery module according to claim 1, characterized in that: An indicator unit is provided inside the coolant chamber; The indicator unit includes a receiving shell connected to the inner wall of the heat insulation layer and an extrusion shell connected to the outer wall of the heat-conducting layer; a receiving cavity is formed between the receiving shell and the extrusion shell; an indicator is provided in the receiving cavity.

8. A high-safety power battery module according to claim 7, characterized in that: The housing is provided with a release port that communicates with the housing cavity; the release port is provided with a one-way valve.

9. A high-safety power battery module according to claim 8, characterized in that: The housing is recessed inward to form a platform; the release port is located on the side wall of the platform.

10. A car, characterized in that: It includes a vehicle body; the vehicle body is provided with a battery compartment; the battery compartment is provided with a plurality of high-safety power battery modules as described in any one of claims 1-9.

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