CN217361791U - Battery module, battery package and car - Google Patents

Abstract

The utility model discloses a battery module, battery package and car, wherein the battery module includes casing assembly, front end plate subassembly and back end plate subassembly down, go up casing assembly down casing assembly front end plate subassembly with back end plate subassembly connects and forms the battery chamber, be equipped with electric core in the battery chamber, it includes the upper plate shell to go up casing assembly, be equipped with on the upper plate shell with the relative trompil that sets up of electric core, the laminating has the insulating film on the trompil. The utility model discloses the battery module can effectively control the cleanliness, prevents that the foreign matter from getting into; when the battery module is out of control due to heat, high-temperature gas can be quickly and effectively released from the precut area, and the risk of out of control due to heat of other cells and even other modules is reduced to a great extent; when adjacent battery module takes place thermal runaway, go up guard plate and preceding guard plate and can play insulating thermal-insulated effect, can the separation or reduce outside high temperature to the influence of module, effectively delay the condition of stretching of car battery thermal runaway.

Description

Battery module, battery package and car

Technical Field

The utility model relates to a battery technology field, concretely relates to battery module, battery package and car.

Background

The safety problem is one of the severe problems faced by the battery system of the new energy automobile at present. The root cause of the fire is that the single battery cell is on fire at high temperature, so that the whole module and the battery pack are on fire, and passengers bring safety risks. Through a large amount of experiments and principle analysis, there are two main reasons that cause module heat diffusion: firstly, after the battery core is out of control due to heat, the generated heat and gas can not be discharged outside the module in time, the heat is transferred to adjacent battery cores in a short time, and the out of control is triggered in sequence, so that the out of control of the whole module and a battery pack is caused; secondly, the thermal protection of the adjacent modules is not enough.

The battery module package has following defect at present: the area of the top opening of the module is large, cleanliness is difficult to control in the processes of assembly, transportation and the like, customer complaints are easy to cause, and if metal impurities enter, a battery core is easy to cut to cause short circuit, so that the safety problem is caused; the opening area of the module shell is large, the integral mechanical strength can be greatly influenced, the mechanical performance is difficult to guarantee, for example, a higher-strength material is used for guaranteeing the mechanical performance, and the manufacturing process, the cost and the like have adverse effects; the top or the lateral part has more open pore structures, the external short-circuit protection is weak, if external high-temperature gas approaches, thermal runaway is extremely easy to cause, and certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

For solving at least one in the above-mentioned problem, the utility model provides a technical scheme does:

the utility model provides a battery module, includes casing assembly, front end plate assembly and back end plate assembly down, go up casing assembly down casing assembly front end plate assembly with back end plate assembly connects and forms the battery chamber, be equipped with electric core in the battery chamber, it includes the upper plate shell to go up casing assembly, be equipped with on the upper plate shell with the relative trompil that sets up of electric core, the laminating has the insulating film on the trompil.

The utility model discloses further set up to go up the casing subassembly and still include the guard plate, the guard plate sets up the upper casing with between the electric core, be equipped with the cutting district on the guard plate, the cutting district with the trompil position sets up relatively.

The utility model discloses further set up to be equipped with the cutting lines in the cutting area.

The utility model discloses further set up as the front end plate subassembly includes the front end plate, be provided with on the front end plate and connect the end of inserting, connect and serve and be close to one side of battery chamber is equipped with the protecting film.

The utility model discloses further set up to the front end plate subassembly still includes preceding guard plate, preceding guard plate sets up the front end plate with between the electric core.

The utility model discloses further set up to casing subassembly includes U type casing and inserts the board down, it is in to insert the board setting the both sides of electric core, insert the board with the inboard laminating of U type casing.

The utility model discloses further set up as the material that the insulating film adopted is PET plastics.

The utility model discloses further set up to the trompil covers each of battery chamber inside electricity core, the total area of trompil does not exceed 50% of the total area in upper plate shell top.

The utility model discloses further set up to down the casing subassembly go up the casing subassembly the front end plate subassembly with the back end plate subassembly is connected through the welding.

A battery pack adopts the above battery module.

An automobile adopts foretell battery module or battery package.

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

1. according to the technical scheme, the insulating film is attached to the opening of the upper plate shell, so that the cleanliness can be effectively controlled in the processes of battery transportation and assembly, and foreign matters are prevented from entering the battery module; when the battery module is out of control due to heat, the insulating film can be burnt by high temperature to release high-temperature gas;

2. the upper protection plate has the main functions of insulating and insulating heat, but when the battery module generates thermal runaway and causes a battery cavity to generate high temperature and high pressure, a cutting area on the upper protection plate can be opened under pressure, so that high-temperature gas can be quickly and effectively released from a precut area, an invisible channel is created in a latent manner, the internal pressure and temperature of the module can be effectively reduced, and the risk of thermal runaway of other battery cores and even other modules is reduced to a great extent;

3. the inserting end of the front end plate is provided with a protective film, and a front protective plate is arranged between the front end plate and the battery cell, so that the insulating and heat-insulating effects are achieved, and the influence of external high temperature on the module can be blocked or reduced;

4. the structure enables the battery module to have stronger heat-insulating property and thermal runaway heat dissipation performance, so that the opening area of the whole module is not required to be too large, the mechanical strength of the whole battery module can be effectively improved, and the mechanical property is enhanced; meanwhile, the structure is simple, the material processing and production manufacturing are more friendly, and the production cost advantage is more prominent.

Drawings

Fig. 1 is a perspective view of an embodiment of the present invention.

Fig. 2 is an exploded view of the embodiment of the present invention.

Fig. 3 is a schematic top view of an embodiment of the present invention.

Fig. 4 is a schematic view of a first cutting area according to an embodiment of the present invention.

Fig. 5 is a schematic view of a second cutting area according to an embodiment of the present invention.

Fig. 6 is a schematic view of a third cutting area according to an embodiment of the present invention.

Reference numerals: 1. an upper housing assembly; 11. an upper plate shell; 111. opening a hole; 12. an insulating film; 13. an upper protection plate; 131. a cutting zone; 2. a lower housing assembly; 21. a U-shaped housing; 22. an insert plate; 3. a front endplate assembly; 31. a front end plate; 311. connecting a plug end; 32. a protective film; 33. a front guard plate; 4. a rear endplate assembly; 5. and (5) battery cores.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, an integral connection, or a detachable connection; either mechanically or electrically, or internally communicating two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art will understand the specific meanings of the above terms according to specific situations.

Example 1

Combine accompanying drawing 1 to attached 3, the utility model discloses technical scheme is a battery module, including last casing subassembly 1, casing subassembly 2, front end plate subassembly 3 and rear end plate subassembly 4 down, go up casing subassembly 1 casing subassembly 2 down front end plate subassembly 3 with rear end plate subassembly 4 is connected and is formed the battery chamber, be equipped with electric core 5 in the battery chamber, it includes upper plate shell 11 to go up casing subassembly 1, be equipped with on upper plate shell 11 with the relative trompil 111 that sets up of electric core 5, the laminating has insulating film 12 on the trompil 111.

In this embodiment, the upper shell assembly 1 further includes an upper protection plate 13, the protection plate 13 is disposed between the upper shell 11 and the battery cell 5, the protection plate 13 is provided with a cutting area 131, the cutting area 131 is disposed opposite to the opening 111, and the cutting area 131 is provided with a cutting line. As shown in fig. 4, preferably, the cutting line is a straight line, and both ends of the straight line also form a Y-shaped cutting line. In a further embodiment, as shown in fig. 5, the cutting line is a straight line cut; as also shown in fig. 6, the dicing line has three sides in a rectangle.

In this embodiment, the front end plate assembly 3 includes a front end plate 31, a plug end 311 is disposed on the front end plate 31, the plug end 311 is configured to electrically connect and fix a power terminal on the battery cell 5, and a protective film 32 is disposed on one side of the plug end 311, which is close to the battery cavity.

In the present embodiment, the front end plate assembly 3 further includes a front protection plate 33, and the front protection plate 33 is disposed between the front end plate 31 and the battery cell 5.

In this embodiment, the lower casing assembly 2 includes a U-shaped casing 21 and an insertion plate 22, the insertion plate 22 is disposed on two sides of the battery cell 5, and the insertion plate 22 is attached to the inner side of the U-shaped casing 21.

In this embodiment, the insulating film 12 is made of PET plastic.

In the present embodiment, the openings 111 cover the respective battery cells 5 inside the battery cavity, and the total area of the openings 111 is not more than 50% of the total area of the top of the upper plate casing.

In the present embodiment, the lower case assembly 2, the upper case assembly 1, the front end plate assembly 3, and the rear end plate assembly 4 are connected by welding.

In this embodiment, mica is used as the material of the upper protection plate 13 and the front protection plate 33.

The utility model discloses when battery module takes place the thermal runaway at its inside certain slice of electric core, the module internal pressure increase, the precutting structure of cutting area can open release high temperature gas rapidly under the effect of pressure to can be burnt the insulating film, simultaneously, the trompil position of going up the guard plate covers every electric core as far as possible, under the condition that any electric core takes place the thermal runaway, all can be fast from the precutting department release high temperature gas of cutting area, create an invisible channel latently. High-temperature gas effectively releases in time, can effectively reduce module internal pressure and temperature, and to a great extent reduces other electric cores and even other module thermal runaway's risk. In addition, if the adjacent modules in the vehicle or the battery pack have thermal runaway, the fireproof material of the upper protection plate in the module and the protection film arranged near the plugging end protect the battery module, so that the influence of external high temperature on the battery module is blocked or reduced.

Through the actual thermal runaway test, adopt the utility model discloses a battery module no matter test in the airtight environment of open environment and simulation battery plate structure really, thermal runaway's time all improves 2 ~ 5 times before than, effectively delays the condition of stretching of car battery thermal runaway.

Example 2

A battery pack employs the battery module described in embodiment 1.

Example 3

An automobile, which adopts the battery module of embodiment 1 or the battery pack of embodiment 2.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a battery module, its characterized in that includes casing assembly, front end plate subassembly and back end plate subassembly down, go up casing assembly down the casing assembly front end plate subassembly with back end plate subassembly is connected and is formed the battery chamber, be equipped with electric core in the battery chamber, it includes the upper plate shell to go up casing assembly, be equipped with on the upper plate shell with the relative trompil that sets up of electric core, the laminating has the insulating film on the trompil.

2. The battery module according to claim 1, wherein the upper housing assembly further comprises an upper protection plate, the protection plate is disposed between the upper shell and the battery core, a cutting area is disposed on the protection plate, and the cutting area is disposed opposite to the opening.

3. The battery module according to claim 2, wherein the cutting region is provided with a cutting line.

4. The battery module as claimed in claim 1, wherein the front plate assembly comprises a front plate, the front plate is provided with a plug end, and a protection film is disposed on a side of the plug end adjacent to the battery cavity.

5. The battery module of claim 4, wherein the front end plate assembly further comprises a front guard plate disposed between the front end plate and the cell.

6. The battery module as recited in claim 1, wherein the lower casing assembly comprises a U-shaped casing and insertion plates, the insertion plates are disposed on two sides of the electric core, and the insertion plates are attached to the inner side of the U-shaped casing.

7. The battery module according to any one of claims 1 to 6, wherein the openings cover the cells inside the battery cavity, and the total area of the openings is not more than 50% of the total area of the top of the upper plate shell.

8. The battery module according to any one of claims 1 to 6, wherein the lower case assembly, the upper case assembly, the front end plate assembly, and the rear end plate assembly are connected by welding.

9. A battery pack, characterized in that the battery module according to any one of claims 1 to 8 is used.

10. An automobile, characterized in that the battery module according to any one of claims 1 to 8 or the battery pack according to claim 9 is used.

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